History Main / EnemyMine

18th Jun '16 4:50:02 AM eroock
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* EnemyMine/AnimatedFilms



* EnemyMine/{{Film}}

to:

* EnemyMine/{{Film}}[[EnemyMine/AnimatedFilms Films - Animated]]
* [[EnemyMine/{{Film}} Films - Live-Action]]
9th Jun '16 3:26:35 PM Galemp
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Compare NominalHero, a character who fights for good even though their intentions are not heroic at all. Contrast with WeAreStrugglingTogether, where you have putative allies who end up backstabbing and/or infighting with each other. When this trope is averted completely, one has a MexicanStandoff. See also AnOfferYouCantRefuse, CollidingCriminalConspiracies, DoWellButNotPerfect, GenghisGambit, InevitableMutualBetrayal and TallPoppySyndrome. May be a result of the Good and the Bad teaming up in a TheGoodTheBadAndTheEvil scenario. Can be caused by TheHorseshoeEffect.

to:

Compare NominalHero, a character who fights for good even though their intentions are not heroic at all. Contrast with WeAreStrugglingTogether, where you have putative allies who end up backstabbing and/or infighting with each other. When this trope is averted completely, one has a MexicanStandoff. See also AnOfferYouCantRefuse, CollidingCriminalConspiracies, DoWellButNotPerfect, GenghisGambit, InevitableMutualBetrayal and TallPoppySyndrome. A defining feature of the StandardSciFiSetting. May be a result of the Good and the Bad teaming up in a TheGoodTheBadAndTheEvil scenario. Can be caused by TheHorseshoeEffect.
5th May '16 11:12:58 PM GoldenSeals
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A good source of FoeYay, whether due to the fact that the villain secretly does harbor feelings for the protagonist (a direct example) or simply realizes how boring and/or aimless his life would be without the protagonist. Compare EmbarrassingRescue, GondorCallsForAid. See also EnemyCivilWar or ElvesVersusDwarves (with which it often overlaps). Anti villains are more prone to this trope than most, and less likely to backstab the goodies afterwards.

to:

A good source of FoeYay, whether due to the fact that because the villain secretly does harbor feelings for the protagonist (a direct example) or simply realizes how boring and/or aimless his life would be without the protagonist. Compare EmbarrassingRescue, GondorCallsForAid. See also EnemyCivilWar or ElvesVersusDwarves (with which it often overlaps). Anti villains are more prone to this trope than most, and less likely to backstab the goodies afterwards.
16th Mar '16 7:17:10 PM IchigoMontoya
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''Not to be confused with the Dennis Quaid movie/Barry Longyear story ''Film/EnemyMine''. We also sincerely hope that you did not have a slip of the finger and ended up here instead of at EnemyMime. For an enemy that ''is'' a mine, see ActionBomb, and for a different kind of mine which is filled with enemies, see DugTooDeep. [[CaptainObvious As might be gathered by this point]], this article [[IThoughtItMeant is also unrelated]] to [[SeaMine passive defensive weapons]] planted by one's foes. Also not related to mines of the underground type; for that, see UndergroundLevel or MinecartMadness. [[OverlyLongGag Wholly unrelated to]] QuoteMine, which refers to the propaganda tactic of being very particular in quoting someone the propagandist disagrees with to convey an inaccurate conception of their actual opinion and/or why they said that.''

to:

''Not Not to be confused with the Dennis Quaid movie/Barry Longyear story ''Film/EnemyMine''. We also sincerely hope that you did not have a slip of the finger and ended up here instead of at EnemyMime. For an enemy that ''is'' a mine, see ActionBomb, and for a different kind of mine which is filled with enemies, see DugTooDeep. [[CaptainObvious As might be gathered by this point]], this article [[IThoughtItMeant is also unrelated]] to [[SeaMine passive defensive weapons]] planted by one's foes. Also not related to mines of the underground type; for that, see UndergroundLevel or MinecartMadness. [[OverlyLongGag Wholly unrelated to]] QuoteMine, which refers to the propaganda tactic of being very particular in quoting someone the propagandist disagrees with to convey an inaccurate conception of their actual opinion and/or why they said that.''
that.
9th Mar '16 3:06:17 PM mlsmithca
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Compare NominalHero, a character who fights for good even though their intentions are not heroic at all. Contrast with WeAreStrugglingTogether, where you have putative allies who end up backstabbing and/or infighting with each other. When this trope is averted completely, one has a MexicanStandoff. See also AnOfferYouCantRefuse, CollidingCriminalConspiracies, DoWellButNotPerfect, GenghisGambit, InevitableMutualBetrayal & TallPoppySyndrome. May be a result of the Good and the Bad teaming up in a TheGoodTheBadAndTheEvil scenario. Can be caused by TheHorseshoeEffect.

to:

Compare NominalHero, a character who fights for good even though their intentions are not heroic at all. Contrast with WeAreStrugglingTogether, where you have putative allies who end up backstabbing and/or infighting with each other. When this trope is averted completely, one has a MexicanStandoff. See also AnOfferYouCantRefuse, CollidingCriminalConspiracies, DoWellButNotPerfect, GenghisGambit, InevitableMutualBetrayal & and TallPoppySyndrome. May be a result of the Good and the Bad teaming up in a TheGoodTheBadAndTheEvil scenario. Can be caused by TheHorseshoeEffect.



[[foldercontrol]]

[[folder:Animated Films]]
* In ''WesternAnimation/{{Shrek}}'', [[spoiler:the ogre teams up with the [[InstantAwesomeJustAddDragons dragon]] he was sent to slay to save the DamselInDistress from the KnightInShiningArmor, because HumansAreTheRealMonsters.]]
** Though slaying the dragon was never part of the bargain; he just had to recover the princess (normally he'd have to slay the dragon, but this time he just outwits her).
** Also, [[spoiler:she comes to help because Donkey, who she loves, asks her to.]]
* In the first ''WesternAnimation/ToyStory'', Woody and Buzz are initially bitter enemies due to Woody's jealously over Andy's affection, but when the two toys end up separated from the rest of the group, they must work together in order to get back home. [[spoiler:They then become [[FireForgedFriends good friends]] for the rest of the trilogy.]]
* This trope is the whole point of ''WesternAnimation/MonstersVsAliens'', though the monsters [[AntiVillain are pretty good-natured]].
* In the ''WesternAnimation/{{Futurama}}'' movie "Bender's Big Score", not only is the Robot Devil providing music at [[spoiler:Leela's abortive wedding]], but they later team up with the robot mafia and evil robotic Santa to take Earth back from the scammer aliens.
* When Prince Achmed from ''WesternAnimation/TheAdventuresOfPrinceAchmed'' stumbles into the volcano home of a powerful witch, she tries to strangle him. When Achmed finally manages to tell her that he was marooned there by the evil wizard, she says "He is my greatest enemy! And we are friends!" She then helps Achmed defeat the wizard.
[[/folder]]

[[folder:Anime And Manga]]
* Subverted in ''Anime/UFORoboGrendizer''. In one of the manga versions, ''Anime/GreatMazinger'' BigBad, Emperor of Darkness, offered ''[[Anime/MazingerZ Kouji Kabuto]]'' an alliance to fight [[AlienInvasion the Vegans]]. It was subverted because Kouji refused the offer and BigBad King Vega [[spoiler:killed the Emperor to impede that alliance and get rid of a possible enemy and competitor.]]
* In the anime version of ''Anime/ValkyriaChronicles'', Episode 12 has Welkin and Faldio team up with Jaeger and Selvaria to foil a plot to kidnap Princess Cordelia (and Alicia, who was captured in the process) and use her to BS an impromptu alliance between the Federation and Gallia, which is really a cheap way for Prime Minster Borg to usurp the throne "legally" and force the Imperial forces into a two front war situation, which at best leaves him in control of Gallia with Federation backing and gives the Imperial forces pause, or at worst ensures the Imperials are forced to fight a much bigger enemy on two fronts, with either outcome leaving him at an advantage. Everyone launches obvious objections to Welkin's proposed EnemyMine until Welkin points out the massive mutual gain they stand to profit from, leading to a brief Imperial-Gallia alliance to foil the plot.
* ''Franchise/LyricalNanoha'':
** In the first two ''Anime/MagicalGirlLyricalNanoha'' seasons, Nanoha's {{de|featMeansFriendship}}termination finally pays off, and her rivals turn on their creator and help her and the Time-Space Admin crew.
** It's a mixed bag in ''[[Anime/MagicalGirlLyricalNanohaStrikerS StrikerS]]''. On the one hand, [[spoiler: most of the Numbers were headed in the right direction as of the epilogue and eventually joined either the [[SaintlyChurch Saint Church]] or [[TheFederation the TSAB]] afterward, Lutecia has her mom back, and Agito had performed a full-fledged HeelFaceTurn and joined up with Signum to defend the city from Jail's drones.]] On the other hand, [[spoiler:Jail and his most loyal cyborgs are cooling their heels in prison instead of making friends with the Aces.]]
* In ''Anime/{{Pokemon}}'', the heroes are forced to work with TeamRocket every once in a while, most often in the movies where the whole world is in danger. It happens the point the trio performs a LampshadeHanging on it in Movie 8:
-->'''James:''' Looks like everything's back to normal.\\
'''Jessie:''' Which means we're back to being losers.
** This is the whole plot of the episode "''Pikachu Re-Volts''". After Jessie and James's Pokemon are controlled and taken by their fellow Team Rocket members, Cassidy and Butch, Ash and company team up with them to get the Pokemon back.
** The most bizarre version of this has to be the Season 7 episode "''The Bicker the Better''", where after much squabbling between males and females, Jessie recruits a (slightly reluctant) May into a tag team battle...versus James, who also formed an alliance with Ash, in what Brock calls "the battle of the sexes".
** And in a first season episode, Ash and the gang even '''''help''''' Team Rocket try to kidnap the MonsterOfTheWeek: a Snorlax, which they thought was the one causing the drought in a nearby town.
** A more traditional example is in the Tag Battle Tournament mini-arc, the finale of the first ''Diamond and Pearl'' season. Ash and '''[[TheRival Paul]]''' were randomly picked to compete as a team for a pair of Soothe Bells as the prize. Paul just wanted to get some experience for his team, none of the happiness items for him. The results were not pretty, even though they managed to win.
** In episode [=XY063=], Team Rocket and Ash's crew work together to foil a Pokemon hunter. The impetus for it was the hunter kidnapping Meowth, James' Inkay, and Jessie's Pumpkaboo. It even features a JustInTime moment for Wobbuffet.
** Happens fairly often in ''Manga/PokemonSpecial''. Sabrina, Koga, and Lt. Surge of Team Rocket aid the protagonists against the Elite Four in the Yellow chapter, while Lorelei of the Elite Four helps the protagonists when Team Rocket invades her hometown.
** Near the end of ''Manga/PokemonDiamondAndPearlAdventure'', Cyrus and his three top officers team up with the heroes to stop Charon from taking over Sinnoh. When he was last in power, Cyrus had attempted to destroy the universe.
* In ''Anime/YuGiOh'', Yugi and Kaiba are frequently forced to team up against a bigger threat, and it almost always ends with Kaiba walking away muttering about how he is destined to beat Yugi someday.
** Yugi and Kaiba are more like rivals than enemies - Kaiba is never actually on the 'evil' side except during the very start of the series (given a partially accurate incarnation in Season 0, which was so much DarkerAndEdgier than the rest of the series that it's never had an English dub).
** Also, Malik and Bakura's alliance, specifically in the duel against Yami no Malik.
** Similarly during the formation of the same team in ''WebVideo/YuGiOhTheAbridgedSeries'', Marik proclaims, "And the enemy of my friend is also my enemy!" Bakura informs him that's not how it goes.
* ''[[Anime/MobileSuitGundam00 Gundam 00]]'' has the alliance between the Big Three (Union, HRL, AEU) which was formed to defeat the rogue paramilitary organization Celestial Being.
** In Episode 17, all five sides (Celestial Being, Katharon, the coup d'etat forces, the regular Earth Federation military, and A-Laws) temporarily dispose of their hatreds in a CrowningMomentOfAwesome ''for all sides'' that involves stopping a potential Ice Age and the slaughter of tens of millions of lives by shooting down the countless falling pieces of the destroyed Africa Orbital Elevator.
** Later in season 2, the Federation army reluctantly allies itself with bitter enemies Celestial Being and Katharon against the A-Laws and the Innovators.
* In ''Manga/DeathNote'', Near and Mello are bona fide enemies, despite being {{Worthy Opponent}}s. When Kira manages to be a bigger fish to fry than they had expected, they do end up de facto needing to work together, using the only female on their of their teams as a liaison, and pretending viciously that they want nothing to do with each other.
** Near's pretty clear that he'd have no problem working with Mello, to the point that it could be argued he does want to. Mello's the one who wants nothing to do with Near (besides win against him) and tries to verbally pretend he's not helping. "Near, I have no intention of working with you. However, it wouldn't be right to just take my picture and leave. So, I'll settle my debt." Afterward, he still maintains contact with Lidner but pointedly doesn't dwell on the fact that he knows that Near knows about the contact.
** Also, at one point the investigation team is forced to temporarily ally with Kira himself, as one of the Death Notes ends up in the hands of the Mafia, something that both sides consider the worst possible scenario.
** Also in the first arc when the [[JackTheRipOff Second Kira]] first appears L agrees to let Light work with the taskforce [[spoiler: to use one Kira to lure out the other in order to get evidence on both of them.]] Light finds this fortuitous because then he can keep tabs on both L and the Second Kira.
** The entire Yotsuba arc can be considered this, with Light and L working together to track down the new Kira. Light's temporarily turned good thanks to a MemoryGambit, but L accepts working with him despite still being suspicious of him.
* ''Anime/CodeGeass'' has Lelouch and Suzaku teaming up to get rid of the Kyushu invaders.
** Then a season later they team up again to [[spoiler: conquer the world, make themselves out to be two of the most hated people in history, dress Suzaku up as Zero after faking his death, then assassinate Lelouch in a highly public manner in order to bring about world peace.]] [[TheExtremistWasRight It worked.]]
* Happened at least thrice in the first season of ''Anime/CorrectorYui'', where Yui and War Wolf had to teamwork to save either themselves or others. Also happened in the second season of the anime, with Yui and DarkMagicalGirl Corrector Ai.
* ''Franchise/LupinIII'': [[SympatheticInspectorAntagonist Inspector Zenigata]] is usually willing to team up with [[VillainProtagonist Gentleman Thief Lupin]] whenever it involves taking down a more clearly evil criminal (which is surprisingly often). This is implied to be main reason why he hasn't been fired yet.
* In ''Anime/DragonBallZ'', Goku and Vegeta's alliance initially starts when they both team up to fight Frieza, the former to save the Universe, the latter because he wants to avenge his pride by defeating Frieza because he was used by him constantly. He ends up redeeming himself and forming a family with Bulma, though he maintains [[TheRival his rivalry]] against Goku.
** And before that, Piccolo joined Goku, and later the rest of the cast to fight against the Saiyans. For viewers who joined the show at the start of the ''Z'' series, their past history with one another could easily be missed or forgotten.
*** For a while, ''Manga/DragonBall'' had a pattern where the main antagonist of the previous arc would team up with Goku against the villain of the current one, earning good guy status in the process. This started with Yamcha (who tries to rob Goku in his first appearance) and continues all the way to Freeza, when Toriyama finally gave us a villain too evil to ever join Goku. Here is a list of some of the former villains who joined Goku, mostly through EnemyMine {{Heel Face Turn}}s: Oolong, Yamcha, Puar, Tien, Chao-tzu, Piccolo, Vegeta, Android #16, Android #17 (though he never actually met Goku before leaving off-screen shortly after his turn), Android #18, Dabra (according to anime filler in Other World), Majin Buu, Nuova Shenron (in ''[[Anime/DragonBallGT GT]]''), and Abo and Kado (in the recent special which introduced Table to the world).
*** Actually, he made all his friends by fighting them first, except for Roshi, Krillin and Lunch.
*** And Krillin was his training rival for a while.
*** Near the beginning of the Android Saga, Krillin mentions this pattern when Bulma asks the guys why they don't just find Dr. Gero and stop him from ever creating the Androids. So long as they have a common enemy, Vegeta is less likely to revert to being a full-blown villain.
*** Cell actually forced quite a bit of this. Being an Android threat, he and the rest of them give Vegeta someone beyond Goku to kill. Later, Piccolo, after trying to kill 17 to keep Cell from absorbing 17, then decides to fight Cell, despite being weakened, to try to save 17. After Cell does absorb 17, Trunks and Krillin try to protect 18 from Cell, even if it means having to go through Vegeta to do so. It is then because of how dangerous Cell has become upon getting 18 that convinces the Z-Warriors to let 16 fight with them.
* Every time Gun for Hire Katana joins the rest of the Techode pilots in ''Anime/GadGuard'' to stop a rogue Gad from destroying everything it touches. Interesting in that half the team (both girls, who met him under different circumstances) don't consider him an enemy. His adorable MoralityPet helps.
* The Impel Down arc in ''Manga/OnePiece'' was one big EnemyMine moment. [[spoiler:Luffy has infiltrated the [[TheAlcatraz Impel Down prison]] in order to free his older brother who's being held on the lowest level. During the infiltration he ended up "teaming up" with two former enemies (Buggy the Clown and Mr. 3) who are constantly trying to go up and out, only seeing Luffy as a means to distract the guards. But, through various mishaps they end up falling down to the lower levels anyway and find themselves forced to co-operate in order to stay alive.]]
** [[spoiler:In Level Six of the prison: Luffy teamed up with Crocodile. Let me say that again: ''Luffy'' teamed up with '''''Crocodile'''''. This is another one-sided Enemy Mine situation, though. Crocodile's willing to work with Luffy, but he's evil enough that Luffy is highly reluctant to take him along. Mr. 1 also joins them, but Luffy never met him before, and doesn't know who he is. Of course, Impel Down is [[HellholePrison such an awful place]], if ''anything'' warranted an EnemyMine with ''any'' of Luffy's old foes, ''this'' would.]]
*** Taken UpToEleven in the Whitebeard War arc. [[spoiler:Crocodile protecting Luffy, fighting alongside the Whitebeard pirates, and generally being the closest thing to altruistic he's ever been thus far. Buggy fights on Luffy's behalf (even if Luffy forced him into it). This war is absolutely crazy in the temporary partnerships it has formed.]]
** Earlier on, Luffy's crew, the Galley-La company, and the Franky Family, despite having fought in a three-way battle before, team up when they realize that they're facing the same enemy, albeit for different reasons (rescuing Robin, dealing with Iceberg's assassins and preventing Pluton's revival, and saving Franky, respectively). Then again, the Galley-La crew had been fighting the Straw Hats under the mistaken belief that they were responsible for the attempt on Iceberg's life, which they just realized.
** Luffy and his crew have also had to team up with Smoker and Tashigi a few times due to circumstance, once during the Alabasta Arc and once in [[spoiler:Punk Hazard]]. Though it should be noted that they're [[HeroAntagonist not villains per se]], just Marines that would very much like to capture the Straw Hats.
*** During the Punk Hazard arc, [[spoiler: there's actually ''two'' Enemy Mine situations: the Straw Hats form an alliance with Trafalgar Law (and by extension, his crew) to capture Caesar Clown and take down one of the Yonko (Kaido, to be exact), and both groups end up teaming up with Smoker and Tashigi again, this time to rescue the children Clown had kidnapped and escape the island safely.]]
* In ''Manga/RanmaOneHalf'', several Enemy Mine alliances emerge among the various members of the LoveDodecahedron. Shampoo, Ukyō and Kodachi regularly team up against any external threat to Ranma (or a new potential suitor). Ranma himself teams with Ryōga and Mousse against Prince Herb. Ranma and Ryōga do this often enough that they inch into FriendlyEnemy territory by the end of the series.
** And inverted with Ryōga and Mousse in the anime: although they aren't enemies when they initially team up against their common enemy Ranma, by the end of the episode, they work so poorly together that they can't stand each other. The fact that Mousse is far more ruthless than Ryōga, and also has no qualms whatsoever about hurting others to get rid of Ranma -- even Akane Tendō, Ryōga's [[AllLoveIsUnrequited oblivious crush]] -- does not help matters.
* In the Three-Tails filler arc of ''Manga/{{Naruto}}'', Naruto ends up working with [[spoiler:Guren]] to [[spoiler:escape the inside of the Three-tailed beast]]. The fact that they both have an interest in [[spoiler:Yukimaru's welfare]] and neither wants to see the Akatsuki get the beast helps, too.
** This is also the reason for the very existence of the shinobi alliance, rival nations working together to stop [[spoiler:[[EvilFormerFriend Obito Uchiha]] from executing his [[AssimilationPlot moon's eye plan]]. Though by the end the alliance is in FireForgedFriend territory, as fighting on the same side made most of them (including the leaders) realize that they're NotSoDifferent.]]
** Even Kurama joins in. He even spells it out [[LesserOfTwoEvils loud and clearly]]. [[spoiler: Then he [[HeelFaceTurn befriends Naruto for real]], making both of them stronger.]]
*** A similar situation happens in TheMovie, with Naruto quoting the proverb in response to Kurama offering to help him battle [[spoiler:his AlternateUniverse equivalent]].
* In one of the ''LightNovel/HaruhiSuzumiya'' short stories, the SOS Brigade has to team up with their perceived rival club the Computer Society, in order to stop the plans of the [[PunchClockVillain nefarious]] StudentCouncilPresident from evicting the Brigade from their clubroom.
* Occurs twice in ''Manga/KenichiTheMightiestDisciple'', in Kenichi's last battles against Hermit (a.k.a. [[spoiler:Natsu Tanimoto]]) and Boris Ivankov. Both times, a problem occurred to interrupt the battle, and Kenichi would team up with the person he had been fighting moments ago to resolve it, mostly because one party (Hermit in the first, Kenichi himself in the second) didn't want their opponent to get injured and thus be unable to finish the battle. Naturally, the instant the problem is resolved, both cases have Kenichi and his enemy resume the battle, but [[HeelFaceTurn Hermit at least would later become a full-time ally]] (Boris may do so as well in the future, but for now, he's been PutOnABus).
** The most recent arc has had [[spoiler:Akira Hongo, YAMI's "God Fist"]] joining forces with Ryozanpaku to get revenge on YAMI's "Demon Fist" [[ManipulativeBastard Silcardo Jenazad]] [[spoiler:[[MoralEventHorizon for using him to almost kill Kenichi]] during his fight with Sakaki (which Silcardo did for the purpose of kidnapping Miu to brainwash her into a FaceHeelTurn)]]. Not only that, but [[BigBad the "One Shadow" leader of YAMI]] even gets in on the act, albeit not directly; in his case, though, the team-up is somewhat justified [[spoiler:[[PapaWolf because he's Miu's father]]]].
* Sara and the Space Squadron make amends with Mariette and her Gambee pilot brigade (sorry, but it doesn't have a name and both common {{fan nickname}}s exceed this wiki's age rating) to defend the Libertad in the end of ''Anime/StrainStrategicArmoredInfantry''.
* In the finale of ''Anime/NightWizard'', after spending the entire show chasing the heroes, Bell Zephyr ends up fighting alongside them to defeat the true BigBad.
* Pixie Misa does this twice in ''Mahou Shoujo Anime/PrettySammy''. In the '''same episode'''. Misa and Sammy also team up briefly in the second and third [=OVAs=].
* All the non-Shinryuuji Naga players on Team Japan and Agon in ''Manga/{{Eyeshield 21}}''. And to a lesser degree, all the non-Hakushuu Dinosaurs players and Gaoh (especially Kid, Hiruma and Banba).
* At one point in ''Anime/EurekaSeven'', [[KidHero Renton]] and [[AntiVillain Dominic]] are forced to work together to save Eureka and Anemone.
* Two examples from ''Manga/SoulEater'':
** In order to further her plans, Medusa joins forces with Shibusen and leads a team to infiltrate Baba Yaga castle, the Arachnaphobia base.
** Werewolf Free and shinigami Death the Kid fight Mosquito together. Neither are happy about the idea.
* During a match in the individual tournament in ''Manga/{{Saki}}'', everyone in the table gangs up on Saki, despite one of them being her own teammate (although said teammate mentally notes that they are in competition with each other and Saki promised not to hold back). [[spoiler:It doesn't work.]]
** In ''Manga/SakiAchigaHen'', this happens in the semi-finals, when Toki, Kirame and Kuro go up against Teru, the champion of the mahjong tournament, in order to avoid going below 0 points, resulting in some unspoken cooperation between Kirame and Toki, with Kuro unwittingly helping by preventing Teru from getting dora and making it more difficult for her to increase the value of her hands. In the end, [[spoiler:Kuro breaks Teru's winning streak, and while Teru ends the first round with an overwhelming lead, it's eventually reduced to the point at which her school barely advances]].
** A more complicated example comes up in Kiyosumi's turn at the semi-finals. At the start of the third round, Rinkai and Himematsu have a comfortable lead, while Kiyosumi is a distant third, and Usuzan is dangerously close to being eliminated. Knowing that if Usuzan goes under while Kiyosumi is still in third place, they'll both be eliminated, Hisa decides to protect Usuzan's points while winning off Himematsu and Rinkai. Unfortunately for Hisa, Usuzan's third player realizes that it's just as advantageous to win off Kiyosumi as the other two.
* In ''Manga/FullmetalAlchemist'', Envy works briefly with Ed and Ling when they have to get out from Gluttony's stomach.
** Then he goes OneWingedAngel and tries to kill them...
*** Which was ''before'' Ed had realized that he could get them out.
** Ed joins forces with [[spoiler: Greed-- albeit under the condition of "working for" him-- after Greed [[HeelFaceTurn splits off from the Homunculi.]]]]
** Scar joins up with the protagonists when they have to defeat Father. Envy lampshades the absurdity of it all. "''What?! You're friends now? You guys are no fun at all! Ugh! What happened to trying to crush each other's windpipes?!''"
* In ''Manga/{{Spriggan}}'', Spetsnaz officer Victor Shutrov (or Stolov, based on the Singaporean English translation) tries to kill Japanese KGB agent Koichi Moroha when he learns of his plan to dominate the world via the Fire Shrine and not on behalf of the USSR, helping Yu somewhat. He's killed later, not being able to stop the renegade agent. Yu and Jean team with two of their enemies near the end of the manga. They consist of Iwao Akatsuki, ex-Trident Corporation commando, and Bo Brantz, ex-Neo Nazi and ninja, to defeat Larry Markson from using the natural energy of Gaia in the South Pole.
* In ''Manga/{{Berserk}}'', Guts and Zodd have an [[CrowningMomentOfAwesome AWESOME one of these]] when they temporarily [[spoiler:team up against the Emperor Ganshika, who is a giant fog/storm cloud apostle. Naturally, they do it in the most badass way they can. Schierke finds Ganshika's "core", the only really physical spot in his apostle form, but says that only a powerful magical weapon can do anything. Guts has been slaughtering demons, apostles, and other nasty spirits every single day and night, for about three years straight, with his BFS and so all that pain and hate has made it a magical weapon. Zodd, in demon form, lets Guts ride on top of him, and they use the Dragonslayer to ram Ganshika's 'core'.]]
* Even though catching the Kaitou Kid is one of ''Manga/DetectiveConan'''s chief aims, second only to busting up the Black Organization, Conan often ends up working together with Kid to catch bad guys or otherwise avert disaster, especially in his Non Serial Movie appearances. (For that matter, he has occasionally worked together with Black Organization agents against other Black Organization agents, as well.) His TV-special team-up with Lupin III would probably count as well.
* [[NobleDemon Kougaiji's]] [[MinionWithAnFInEvil team]] and the Sanzo party do this or help each other out in some way so often in ''Manga/{{Saiyuki}}'' that Kougaiji's "it would be unfair to attack you now but next time we will get the scripture" is met with "yeah, yeah we know."
** Happens accidentally with comedic villain Zakuro. Goku--who wasn't around for Zakuro's first appearance and has no idea who he is--helps him when he's passed out from hunger, and Zakuro tries to repay him by defending him from a group of random youkai thugs. Zakuro is ''horrified'' when he realizes who Goku is, especially when the rest of the party show up and cheerfully tell the youkai that Zakuro has totally come over to their side.
* In the final 3 chapters of ''Manga/{{Psyren}}'', Yoshina Ageha teams up with [[spoiler: Amagi Miroku against Mithra.]]
* In ''Manga/InuYasha'', anytime Inuyasha and [[AloofBigBrother Sesshomaru]] team up, this happens, though at the end of each scenario Sesshomaru walks off just a little more of an AntiHero than before.
* In the final episode of Manga/GiantRobo, [[spoiler: Alberto]] suddenly appears to rescue Daisaku. He deems it necessary to point out he hasn't made a HeelFaceTurn, it's just that they have a mutual enemy.
--> '''[[spoiler: Alberto]]''': Let's get something straight, kid. I'm not doing this to help you, your buddies, or because saving humanity gives me a warm fuzzy feeling. I may not be privy to all the deep dark secrets behind this covert operation, but I'm positive about one thing: I will be DAMNED if I watch from the sidelines while [[BigBadWannabe this megalomaniacal adolescent]] determines the outcome of the world! [[TheOnlyOneAllowedToDefeatYou That fate will be decided at another place and time, in a final showdown between Big Fire and you IPO vigilantes!]]
* In {{Sekirei}}, [[PragmaticVillainy Higa of the East]]'s repeated attempts at violating the rules of the game drive [[FairPlayVillain Mikogami of the South]] to come to the rescue of [[TheHero Minato]] on more than one occasion.
* ''Manga/AttackOnTitan'' discusses the whole idea of the whole of humanity settling its differences with each other to fight a common enemy, finding it overly optimistic. Indeed, even in the story, with humans on the brink of extinction against such an enemy, [[SubvertedTrope there's]] [[WeAreStrugglingTogether still plenty]] [[TeethClenchedTeamwork of infighting.]]
* ''Manga/{{Bleach}}'':
** During the battle for Karakura Town, the Visoreds team up with the Shinigami, despite having once been exiled from Soul Society, because Aizen is the reason they were exiled. However, they make it clear to the Shinigami that they're not Soul Society's allies. They are there because Aizen is their enemy and Ichigo is their ally. Upon Aizen's defeat, the Visoreds are accepted back into the Soul Society.
** Hollows are enemies of Humans, Shinigami and Quincies, and Aizen recruits Hollows to fight against Soul Society. In the final arc, the surviving Hollows from Aizen's war with Soul Society, team up with the Shinigami to fight the Quincies, who have conquered both Hueco Mundo, the Hollows domain, and the Soul Society, the Shinigami domain. They are also working with Humans, such as Ichigo's group and Fullbringers. Eventually, even some of the Quincies switch sides when they begin to realise what Yhwach's plans really are. [[AGodAmI Yhwach]] is such a threat to existence itself, he's basically uniting all four enemy groups, and any exiles from those groups, against him.
* At one point in ''LightNovel/FullMetalPanic'', [[TheHero Sousuke]] comes upon [[BigBad Leonard]] and pulls his gun -- but Leonard points out that they're both in the same predicament (trapped in an old laboratory by rubble) and proposes they call a temporary truce and work together to dig themselves out, to which Sousuke agrees. During this time Leonard tries to talk Sousuke into joining his side, but is (obviously) unsuccessful; the truce lasts until they get back to their respective HumongousMecha.
* In episode 3 of ''Anime/BladeAndSoul,'' the Pleasure Gang saves Alka from the BountyHunter, Hazuki, trying to collect on a bounty of 7000 gold from the Palam Empire. Their leader, Dan Roana, has no love for Palam either, and many of their friends and relatives were killed by them, so she suggests they work together to get their payback.
* This happens far more than it should in ''Manga/ZettaiKarenChildren'', where [[TheHero BABEL]] and [[BigBad PANDRA]] team up on occasion, mostly when fighting [[spoiler: Black Phantom]]. Also happens in ''Anime/TheUnlimitedHyoubuKyousuke'', where they team up to defeat the USEI.
* In ''Animation/GuardianFairyMichel'', episode 14, with both Salome and Michel kidnapped, has Kim and the Black Hammer Gang work together to free them.
** Episode 23 has a long-dead evil pharaoh with magical powers arising to kill the heroes, forcing Michel and Salome to team up against him.
* Natsu and [[spoiler:Gajeel]] teaming up against Laxus in ''Manga/FairyTail'', though it's more "rival mine" since they were supposed to be in the same guild by then.
* Gainax's teaser for the ([[WhatCouldHaveBeen never-realized]]) second season of ''Anime/PantyAndStockingWithGarterbelt'' suggested that, after the ShockingSwerve GainaxEnding, the Demon Sisters would be teaming up with the heroes in order to fight the bigger threat: [[spoiler:Demon Stocking (and presumably their father Corset as well).]]
[[/folder]]

[[folder:Comic Books]]
* ''ComicBook/XMen'': ComicBook/{{Magneto}}, always referred to as the BigBad, is the first person the heroes team up with when someone worse comes along.
** Particularly in the [[WesternAnimation/XMen 90s cartoon]], most notably in a season-long storyline in which he and Professor Xavier are stranded together in the [[LostWorld Savage Land]].
** The brilliant ''X-Men'' graphic novel ''ComicBook/GodLovesManKills'' was the basis for ''X2'', and thus follows the same plot except that, since the comics have been going on long enough that they didn't feel the need to hammer home his villainy, Magneto doesn't really have a SnapBack the way he does in the movie.
** And in ''God Loves, Man Kills II'', released to tie in with ''X2'', the X-Men find themselves teaming up with the villain from the original.
** Magneto has worked with the X-Men in multiple story lines, even becoming the leader in one story arc. This is because, for most writers, Magneto isn't as much a bad guy as he is a WellIntentionedExtremist.
** It wasn't just for one arc. In the late 1980s, due to Charles Xavier being absent, a reformed Magneto took over Xavier's School for Gifted Youngsters for something like four years (in real world time). If you were reading X-Men and ComicBook/NewMutants back then, Magneto as the head of the Xavier school felt like a new status quo.
* Loki is willing to fight on Thor's side pretty much any time Asgard is under attack; his goal is to rule it, after all, and he can't rule it if it's demolished. Also, in the Spider-Man comic "The Coming of Chaos", he was willing to team up with Spider-Man in order to [[PapaWolf save his mortal daughter, who had become possessed.]]
* Franchise/{{Spider-Man}} examples.
** Spidey and ''[[ComicBook/DoctorOctopus Doc Ock]]'' ended up working together at one point, in order to deal with a new villain (Carlyle) who used Ock's arm technology to build a bank-robbing powersuit. While simply being robbed wouldn't have been enough to put Ock on the side of his mortal enemy, there was also the fact that Carlyle was threatening Ock's former fiancée, known to Spider-Man fans as "Aunt May". (Truthfully, Aunt May being endangered wasn't really a factor in the fight. It didn't do anything except surprise Doc Ock for a moment and lead to a very funny ''Film/TheRockyHorrorPictureShow'' joke. Spidey came into the fight late as Doc Ock was already going after Caryle for stealing his tech and trying to kill him. To Doc's credit, he ''DID'' stop a building from collapsing just long enough to allow the innocent civilians to escape at Spidey's prompting. That did nothing to ''STOP'' him from letting the building collapse on Spidey, noting "you are not a civilian". Doc Ock also wasn't happy about the inadvertent team-up, later noting (as he told Spidey the weakness in Caryle's armor), "I am not helping you -- I am hurting him." World of difference.)
** It wasn't even the first time Spidey and Ock teamed up, since they also set aside their differences when Hammerhead kidnapped Aunt May. Spider-Man wanted to rescue Aunt May because she was one of his loved ones (along with the fact that he was ''[[TheHero Spider-Man]]'' after all), while Doc Ock wanted to marry May so he could gain access to a nuclear power plant she had inherited.
** Comicbook/{{Venom}} and ComicBook/{{Carnage}} hate each other more than they hate him. Any time Carnage pops up, Venom will call a truce with Spider-Man to go whale on Carnage. This most famously occurred in the storyline ComicBook/MaximumCarnage, which was adapted into a Sega Genesis and Super Nintendo game. Also, In the oddly-named "Venom vs Carnage" comic, after Carnage produces a new symbiote, he and Venom decide that, in the end, they hate the ''new'' symbiote even more than they hate each other (it's implied in Carnage's case that this is part of symbiote biology). The result? Their only teamup. Venom calls it "Temporary. VERY temporary."
** In one of the most memorable stories of ''ComicBook/{{Inferno}}'' that didn't involve the [[ComicBook/XMen mutant teams]] in the main storyline, Spidey fought alongside J. Jonah Jameson to defend ''The Daily Bugle'' against the invading demon horde. It was little wonder that the writers named the story [[ExcitedShowTitle "When the Bugle Blows!"]]
** In the one shot comic ''Spider-Man Dead Man's Hand'', Spidey and his old enemy the Tinkerer cooperated for mutual benefit after the third Carrion infected New Yorkers with a disease that made them zombie-like minions. (The Tinker was working on a teleportation device for the Enclave that Spidey needed to get to Wungadore quickly, as he knew the High Evolutionary might have inside information on the plague, and the Tinkerer was willing to help, seeing as his son was one of the victims of said plague.)
* In Marvel's ''ComicBook/SecretInvasion'' mega-event, [[spoiler: the villain mastermind ComicBook/TheHood sends his forces into battle to save the Earth from the Skrulls]].
** He has his own reasons for this: [[spoiler:it helps ComicBook/NormanOsborn in his ploy to take over SHIELD and instigate the Comicbook/DarkReign]].
*** Actually, it's implied that [[spoiler:The Hood had no idea of Osborn's plan, until he called together the Cabal for the first time. The Hood would have let the assembled forces fight the Skrulls, if not for the simple fact that if the Skrulls destroy the Earth, ''they destroy his business''.]]
* Cassie and Film/{{Ch|ildsPlay}}ucky in ''Comicbook/HackSlash Vs. Chucky''.
* This was the [[InvokedTrope driving force]] behind ''Comicbook/{{Watchmen}}'''s ending, both the original comic and the film adaptation (though the common enemy in each was completely different).
* In the comic book series ''ComicBook/ElfQuest'', when two elf tribes -- the Wolfriders and the newly-introduced Go-Backs -- join forces to wage war against the trolls of King Guttlekraw, the elves form a grudging alliance with the trolls formerly led by the late King Greymung, who have been enslaved by Guttlekraw, even though Greymung's trolls have been the hated enemies of the Wolfriders ever since betraying them back at the start of the storyline. The Go-Backs, meanwhile, would never have thought of teaming up with trolls of any kind, period... But it's probably only because of this uneasy alliance that Guttlekraw's trolls are defeated.
* In the 1970s, two issues of ''ComicBook/TheBraveAndTheBold'' featured Franchise/{{Batman}} teaming up with SelfDemonstrating/TheJoker to solve a crime. In #111, they worked together to solve the mass murder of an upstanding local family, which someone had sloppily tried to pin on the Joker. In the end, it turned out that [[spoiler:the whole thing was an elaborate plot between the Joker and the killer to lure Batman into a {{Deathtrap}}]]. In #191, the Penguin is murdered and it looks like the Joker did it. When Batman catches up to him, he proves that he couldn't have done it. It is eventually revealed that [[spoiler:the whole thing was a FakingTheDead by the Penguin, who used it to kidnap a local cardinal]].
* In the Marvel ''[[ComicBook/TheTransformers Transformers]]'' comic, Ratchet and Megatron teamed in an early episode to bring down Shockwave. Megatron, naturally enough, tried to betray Ratchet, but Ratchet was prepared.
** Several years later, during the "Space Pirates!" story in the UK comic, the Autobots and Decepticons join forces to repel the Quintessons, who are trying to conquer Cybertron before Quintessa explodes. Ultra Magnus and Soundwave even get a BackToBackBadasses moment. At the end, Soundwave briefly considers the idea of a lasting peace, but realizes the two factions have come too far to ever resolve their differences.
*** The Autobots and Decepticons were forced to team up ''again'' against the Cybertronian Empire, a faction of hyperevolved Decepticons who had abandoned Cybertron eons ago to create a star-spanning empire of their own. They consider the Autobots and the original Decepticons to be disgusting savages, and eventually returned to destroy their "lesser" brethren.
** Another storyline had Starscream come in contact with a cosmic power source called the Underbase, which made him so powerful - not to mention drove him to madness - that the Autobots and Decepticons were forced to team up to stop him. Notably, they were not able to - overdosing on the Underbase's power eventually destroyed Starscream.
* At the end of ''ComicBook/FinalCrisis'', Superman is facing the Female Furies and the Justifiers. Who saves him and reverses the Anti-Life Equation? Lex Luthor and Dr. Sivana.
-->'''Lex:'''"Not a single word, Superman. We'll call this the Historic First Team-Up of the forces of "Good" and the forces of "Bad". And I'll take the credit for the win"
-->'''Superman:'''"Whatever you say, Lex. Whatever you say."
* ComicBook/TheSupermanAdventures has Superman forced to go to Lex when ComicBook/{{Supergirl}} falls deathly ill.
* ComicBook/{{Paperinik|NewAdventures}} (WesternAnimation/DonaldDuck's superhero alter ego) is forced to work together with a notorious time pirate known as The Raider early on in order to save a large part of Duckburg from being destroyed. Later on, they actually find themselves in EnemyMine situations so often that they build up a strange kind of friendship. The Pikappa reboot has a full story centered around this, with Donald teaming up with the Evronian Soldier Ekdon to take down a StarfishAlien, which the Evronians once planned to use as a LivingWeapon against the [[SpacePolice Guardians of the Galaxy]], being motivated in the bigger picture against the Imperial Adviser Gorthan (revealed to have been Bitter Rivals with Ekdon, [[KlingonPromotion having gotten rid of him to ascend in the Evronian Hierarchies]]. Lampshaded by the Hero near the end "The best ally is an enemy who has a score to settle with your own adversary".
* In ''Cosmic Odyssey'', [[Comicbook/NewGods Darkseid and Highfather]] team up, recruiting Franchise/{{Superman}}, Franchise/{{Batman}}, and various other DC Universe heroes to prevent the [[EldritchAbomination Anti-Life Entity]] from [[TheEndOfTheWorldAsWeKnowIt destroying the entire galaxy]]. [[SarcasmMode To everyone's great surprise]], {{ComicBook/Darkseid}} [[ChronicBackstabbingDisorder betrays his newfound allies]], only to be stopped by Batman's BetrayalInsurance.
** This was hardly the first or the last time that {{ComicBook/Darkseid}} pulled one of these. In ''Comicbook/CrisisOnInfiniteEarths'', for example, he ended up being instrumental in finally defeating the Anti-Monitor (but making it very clear he was only doing it not to help the heroes or anything, but rather to ensure that the Anti-Monitor wouldn't destroy everything).
** Darkseid did the same thing with Imperiex.
* Circumstances have forced [[ComicBook/TheMightyThor Thor]] to team up with members of his RoguesGallery, including [[MagnificentBastard Loki]], [[MoreExpendableThanYou the Executioner]], and [[DatingCatwoman the Enchantress]].
* In the ''ComicBook/DarkwingDuck'' comic revival, Steelbeak teams up with Darkwing to stop [[BiggerBad F.O.W.L. High Command's]] plan to unleash [[EldritchAbomination Duckthulu]], because EvenEvilHasStandards.
* ''Comicbook/FantasticFour'':
** [[spoiler:After the death of the Human Torch]], Doctor Doom and Reed Richards have ''very'' reluctantly agreed to work together in the Future Foundation. This arrangement was brokered by Reed's genius daughter Valeria who convinced Reed that the FF needed someone as ruthlessly pragmatic as Doom if they were going to save the world. She got Doom on board by [[spoiler:promising to help undo the brain damage the Intelligensia inflicted on him in ''ComicBook/FallOfTheHulks'']].
** Not the first time Doom has teamed up with his enemies. An early story arc had him actually leading the FF against the villain known as Over-Mind.
* Franchise/{{Superman}} and ComicBook/LexLuthor are in conflict almost all the time, and loathe each other with a vengeance, but they share a near-fanatical adoration for and protectiveness of their home city of Metropolis. This has caused them to put aside their differences, abandon their other objectives, and team up to take down villains bent on destroying their beloved city more than once.
** They've even saved the world together more than once. Lex ends up doing almost as much good as he does evil.
* In the final issue of Creator/PaulCornell's ''Knight And Squire'', ''everyone'' in the British super-community teams up to take down SelfDemonstrating/TheJoker. The heroes, the anti-heroes, the {{Harmless Villain}}s and the killers like Death Dinosaur. He's just that much of a threat.
* In ''ComicBook/ArchieComicsSonicTheHedgehog'', the Freedom Fighters team up with their enemies against a common threat so often that Sonic's started {{lampshad|eHanging}}ing it. At different points throughout the series, they've teamed up with [[BigBad Robotnik/Eggman]], [[TheStarscream Snively]], their [[EvilTwin Suppression Squad]] counterparts, the [[QuirkyMinibossSquad Destructix]], the [[MachineWorship Dark Legion]], [[EvilSorcerer Ixis Naugus]], and Dr. Finitevus. They usually end up getting backstabbed in these situations, to the point that Sonic's started lampshading ''that'' too.
** More recently, we've had a non-Freedom Fighters examples, as the AntiHero Babylon Rogues teamed up with their rivals the Battle Bird Armada to find their ancestral homeland of Babylon Gardens -- ironically, this puts them in opposition to the Freedom Fighters, as the entrance to the Gardens is apparently in their home of New Mobotropolis.
* Happens on a massive scale in the ''Series/{{Farscape}}'' comic book arc "The War for the Uncharted Territories", when essentially all the factions in the Uncharted Territories have to put aside their rivalries and join forces in order to stand the slightest chance of defending against conquest by the Kkore, which up until then has been defeating everyone in CurbStompBattle[=s=].
* One story-arc in the ''ComicBook/CaptainAmerica'' comic has Cap teaming up with the ''Red Skull'' of all people in order to stop a resurrected Hitler from taking control of the [[AppliedPhlebotinum Cosmic Cube]]. Incidentally, this would lead Cap to [[NoGoodDeedGoesUnpunished being briefly exiled from the United States]], since the U.S. government assumed he had turned his back on America by aligning with the Skull.
** Another time, Diamondback of the Serpent Society sought Cap out when the Viper (Madame Hydra) instigated a hostile takeover of the Society so she could use them to turn the population of Washington, D.C. into SnakePeople. The Captain and his allies helped Diamondback and other Society members still loyal to its founder, Sidewinder, in stopping Viper and reversing the effects of her snakeification of the Capital. This led to Diamondback's HeelFaceTurn and Sidewinder's retirement.
* In an ''Infinities'' (a what-if brand) issue of Franchise/StarWars, specifically the one taking place during the Mortis Arc of ''WesternAnimation/StarWarsTheCloneWars'', of all people, Yoda and ''Darth Sidious'' (the latter presumably having revealed his Sith identity to Yoda) had to forge a temporary alliance to stop Anakin Skywalker, who became exceptionally powerful via the Dark Side thanks to the Son. The allegiance did them no good, though, as Anakin effortlessly killed them.
** Written long before that, Comicbook/MarvelStarWars has some examples. In one comic Leia and one single stormtrooper from Alderaan are the only respective survivors of disaster on both sides; the stormtrooper claims to be taking her prisoner but by the time anyone finds them it's not the case anymore. In the ''World of Fire'' arc, Luke and Leia and a small party of Imperials team up to try and shut off a lethal planetary security system; here, it starts with the Imperials making a threat-offer, but the head of the group soon feels they're trustworthy and starts getting friendly, while one of his men plans to kill them.
* The ''Three Amigos'' storyline in ''ComicBook/JudgeDredd'' is purely an excuse to team him up with his nemeses, Judge Death and Mean Machine Angel. The creators themselves considered this VillainDecay for Judge Death in particular (who's known mainly for killing everything in sight).
* The {{ComicBook/Daken}} and ComicBook/{{X 23}} crossover involved this. Daken was initially working with Malcolm Colcord, while playing all the other parties against one another in pursuit of his own goals. However once Colcord's intent to recreate Weapon X is revealed, Daken and Laura throw in together to bring him down. Unlike Daken's relationship with their [[{{Wolverine}} father]], the team-up results in them becoming FriendlyEnemies when they realize they're NotSoDifferent.
* ''ComicBook/{{Infinity}}'': A large number of nominal enemies -- including the Kree, Skrull, and Shi'ar empires, as well as the Avengers -- unite to counter the threat that the Builders pose to the whole universe.
* ''ComicBook/ForeverEvil'': Lex and his "Legion of Doom"-esque alliance fighting back against the larger, more encompassing threat the Crime Syndicate poses.
* In IDW's [[ComicBook/TheTransformersMegaseries Transformers comics]], the threat of [[TheJuggernaut Thunderwing]] was bad enough for the Autobots and Decepticons to team up to try and stop him. Both times, in fact. And it still barely slows him down.
* In ''ComicBook/TheMultiversity'', Superdoomsday wrecked havoc on several Earths, but because he and his fellow Overcorp stooge are the only champions of Earth-45, Harbinger is forced to summon them in the final battle alongside several superhero teams he had previously wronged. Members of the Earth-10 New Reichsmen and Freedom Fighters are likewise recruited. However, due to the sheer immensity of the conflict, these antagonistic groups have little opportunity to lock horns.
* In ''ComicBook/{{Sojourn}}'', Arwyn and Gareth find an unlikely alliance with a dragon against Mordath.
* The DC run of ''ThePowerpuffGirls'' introduced the Micro-Puffs, three sprite avatars of the girls who show up to cause trouble. In "Micro-Managing" (issue #64), the Micro-Puffs brainwash Buttercup and Bubbles into thinking they should be the PPG leader (it doesn't work on Blossom since she's ''already'' the leader). Blossom gets help from Mojo Jojo, who counters with Mini-Micro Puffs who drive the Micro-Puffs absolutely crazy. (Mojo's motive for helping was because he didn't get a Micro-Mojo). It ends with Mojo and Blossom shaking hands in the pulsating hearts panel.
[[/folder]]

[[folder:Fan Works]]
[[AC: ''Manga/{{Bleach}}'']]
* In ''FanFic/HogyokuExMachina'', Yoruichi is surprised when she finds out that the Vizards fought alongside Soul Society against [[BigBad Aizen]] in the [[TimeTravel original timeline]], since they have no reason to like them. [[TheSmartGuy Ishida]] suggests it was because of this trope.

[[AC: ''Comicbooks/{{Batman}}'']]
* In Fanfic/AngelOfTheBat, Stephanie/Spoiler struggles to bring Red Hood to her cause of [[spoiler: saving Cassie]] because it will mean they will be closer to bringing down their mutual enemy The Seraphim. It doesn’t work [[spoiler: at first. Batman eventually breaks Jason’s resistance personally.]]

[[AC: ''ComicStrip/CalvinAndHobbes'']]
* [[CardCarryingVillain Dr. Brainstorm]] tries to {{def|iedTrope}}y this twice in ''Fanfic/CalvinAndHobbesTheSeries''. Both times, he ends up playing it straight.

[[AC: ''WesternAnimation/ChipNDaleRescueRangers'']]
* ''[[Fanfic/TheNowakverse Under the Bridge]]'': Widget has taken several attempts at killing Gadget. Now Chip calls her on her submarine ''Albacore'' on the radio, alerting her that Gadget is out to attack and sink ''Albacore'' with a self-made, air-dropped torpedo. But the call comes in time: A young squirrel from Widget's crew named Andy injured an ankle on an unprotected chain, and now Widget needs Gadget and her aircraft to take him to a hospital. Meanwhile, when Widget comforts Andy, this also helps trigger her HeelFaceTurn.

[[AC: ''Literature/ChroniclesOfNarnia'']]
* In ''FanFic/{{Carpetbaggers}}'', when the newly-crowned Pevensies need backup to fight a horde of the Witch’s creatures, they recruit the rebels who were holed up in the castle bullying and blackmailing local Narnians.

[[AC: CrossOver]]
* ''Fanfic/ThousandShinji'': Discussed. Asuka suggests that she and Rei should team up (because Shinji enjoys annoying Asuka and Rei likes annoying Shinji), citing the "The enemy of my enemy is my friend" sentence. Rei gets surprised because Shinji has a different version: "The enemy of my enemy dies next."
* This happens in the Naruto/Justice League crossover ''Fanfic/ConnectingTheDots'' when Naruto and Sasuke team up against a REALLY big threat.
* ''FanFic/BurningBlack'': Anti-Cosmo, and by proxy every anti-fairy he commands, allies with Team Turner against Remy and [[spoiler:[[TheManBehindTheMan the Pixies]]]] in Act 3. He even outlaws the use of bad luck on Timothy directly; indirect bad luck is still fair game. The relationship is creeping into FriendlyEnemy territory, which makes Cosmo and Wanda very nervous as Timmy's exposure to anti-fairies affects his personality and allows him to use black magic while giving him immunity to anti-magic waves.
* In ''FanFic/{{Fractured}}'', a ''MassEffect''[=/=]''StarWars''[[spoiler:[=/=]''[=Borderlands=]'']] [[MassiveMultiplayerCrossover crossover]] and its sequel ''[[FanFic/SovereignGFCOrigins Origins]]'', this is attempted several times. Whether it works is another matter.
** Unlike [[VideoGame/MassEffect3 canon]], Samantha Shepard is ''not'' able to pull this off with the whole galaxy when the [[EldritchAbomination Reapers]] arrive, thanks to a TechnologyUplift [[NiceJobBreakingItHero gone wrong]] that causes [[FantasticRacism existing tensions]] to get worse rather than fade away in the face of a common foe.
** The Citadel Council attempts to manage this through Aria T'Loak in the Terminus by having her unite the various mercenary factions to fight [[spoiler:Flood]]. It works in that the mercenaries cooperate, but their efforts fall flat.
** Garrus Vakarian ''tries'' to accomplish this by [[BatmanGambit causing an arms race]] in the CorporateWarfare taking place around him, but it fails on two fronts: the corporations distrust each other and there [[YouRequireMoreVespeneGas aren't enough resources]] for this to work even if they did.
** The heroes tend to view Sarah this way initially--she did kill millions of people even if it was for a [[WellIntentionedExtremist good reason]]. [[spoiler:Flood invasions are generally bad.]]
* ''Fanfic/SOE2LoneHeirOfKrypton'': The first time that ''[[Comicbook/{{Supergirl}} Asuka]]'' and ''[[Comicbook/WonderGirl Rei]]'' are on the same battlefield is during the Brainiac crisis. The first time they have to work together is when Parasite kidnaps them both to use as "power chargers". Asuka finds a lot of respect for Wonder Girl on that day-time will tell if they become FireForgedFriends.
* ''FanFic/ADarkKnightOverSinCity'' features Franchise/{{Batman}} and the [[AntiHero anti-heroes]] from SinCity teaming up together and with other criminals in order to achieve their goals.
* ''FanFic/AShadowOfTheTitans'': Jinx briefly teams up with the Titans after Mumbo captures both Jade and Starfire and forces them to be his "assistants". Jinx describes it as "sharing a mutual problem", and as soon as Mumbo is defeated she grabs Jade and runs off.
** The possible BadFuture glimpsed in the "[[MindScrew Destiny]]" interlude has another apparent example: [[spoiler: whatever "[[NamesToRunAwayFromReallyFast Omega]]" is, it's so bad that the Demon Sorcerers and the Eight Immortals team up with each other and [[FutureBadass Good!Jade]] to stop [[FutureMeScaresMe Evil!Jade]] from releasing it.]]
** Jade and Raven teaming up against the Master of Games.
* ''FanFic/TheEquestrianWindMage'':
** The denizens of [[VideoGame/StoryOfTheBlanks Sunnytown]] -- minus Grey Hoof and the Bone Fiends, who are [[VillainTeamUp working with Ganondorf]] -- ally with the Mane Six and Vaati in order to retrieve the Element of Honesty.
** The fact that Ganon is oppressing ''everyone'' in Equestria leads to alliances with the Diamond Dogs and Changelings against him.
* ''Fanfic/TheBridge'': Monster X and the Sirens are forced to team up when Enjin shows up and tries to kill them all.

[[AC: ''Manga/DeathNote'']]
* In the CrackFic ''Fanfic/AllYouNeedIsLove'' Light seeks help from L and Naomi Misora after [[HilarityEnsues "misplacing" a Death Note.]]
* In ''FanFic/ACureForLove'' [[ArchEnemy Light/Kira considers L]] to be his "partner" in destroying the [[WesternTerrorists Astraea Organization]] [[spoiler: [[HijackedByGanon at first, before he usurps control of their organization]]]].

[[AC: ''Series/DoctorWho'']]
* In [[https://www.fanfiction.net/s/10568721/1/Survival-of-a-Monster "Survival of a Monster"]] the 11th Doctor, Norine and a Rutan form an alliance to stop King Wurzin and the Tufgup learning space travel with a Rutan ship.
** From the same author, "Game of Doctors" has a lot of this as the 7th Doctor in the [[https://www.fanfiction.net/s/9868669/8/Game-of-Doctors 8th chapter]] is forced to make an alliance with Callidus Dominus and the Malphan Empire to defeat the Virmok Empire. Later with the help of the 11th Doctor he gets the Daleks to attack [[spoiler:the Master's Cyberman world]] in the [[https://www.fanfiction.net/s/9868669/16/Game-of-Doctors 16th chapter]], which makes the 9th Doctor furious.

[[AC: ''WesternAnimation/FairlyOddparents'']]
* In ''FanFic/NeverHadAFriendLikeMe'', the [[LawfulEvil Pixies]] and the [[ChaoticEvil Anti-Fairies]] have mutually exclusive goals for the world. They have, however, teamed up together temporarily in order to remove an obstacle to both their plans: Timmy Turner.
** [[spoiler: Later, they join Norm, Timmy, and his fairies in trapping [[EldritchAbomination Bob]] in another dimension]].

[[AC: ''Franchise/{{Halo}}'']]
* ''FanFic/EnemyOfMyEnemy'': ExactlyWhatItSaysOnTheTin, and awesome. Take a UNSC colony and add one shipload of Elites being chased by one carrier full of Brutes...

[[AC: ''Literature/HarryPotter'']]
* In ''FanFic/{{Sluagh}}'', apparently a Wizard BigBad is exactly what's needed to get the Real IRA and the Unionist militia to work together.
* Most stories focusing on Slytherin (particularly Slytherin!Harry) will give the House a simple rule that any problems with housemates stays inside the House. Against the other three Houses, they show a united front regardless of their feelings towards one another.
* ''FanFic/ASnakeNamedVoldemort'' has this between Voldemort and Harry, initially at least.

[[AC: ''WesternAnimation/InvaderZim'']]
* ''FanFic/MyHostageNotYours'': Zim originally helping out Gaz (and Dib by extension) is this trope, before [[RelationshipUpgrade evolving]].
** Tak teams up with Dib's [[LaResistance Group]] in the third story just for revenge against Zim. [[spoiler: When they defect from the Swollen Eyeballs, they team up with Zim and Gaz to defeat them.]]

[[AC: ''WesternAnimation/JackieChanAdventures'']]
* ''FanFic/QueenOfAllOni'': When Valmont uses the power of Kaito's mask to steal the Ninja tribe away from Jade, she and Jackie briefly (and reluctantly, in her case) team up to defeat him.
** Subverted in one of the scenes set in [[GhostInTheMachine Jade's mindscape]] -- Hero tries to form an alliance against [[SuperpoweredEvilSide The Queen]] with his apparent rival Father, but is rejected.
** In a similar subversion, the J-Team refuses to ally with [[FutureBadass Karasu]] against Drago, as they don't see any good coming from working with a Shadowkhan.
* ''FanFic/{{Webwork}}'': The Mexican crime boss known as the Old Colonel convinces the J-Team to protect him from the Oni Essence-empowered Chang and help take him down, by pointing out that [[LesserOfTwoEvils it's better than]] letting Chang kill him, take over his assets, and go to ground with it all. [[spoiler: They do help, but set the Colonel to be arrested by the Mexican police.]]

[[AC: ''WesternAnimation/MyLittlePonyFriendshipIsMagic'']]
* ''FanFic/ABriefHistoryOfEquestria'': When Wind Whistler led a coup against [[TheCaligula Commander Sullamander]], she recruited help from Star-Swirl the Bearded and the few unicorns loyal to him. True, Star-Swirl was open-minded and friendly with the other tribes, but that's still members of one nation asking help from members of a rival nation to overthrow their leader.
* ''FanFic/TheImmortalGame'': In a plan [[GodzillaThreshold born of desperation]] to defeat [[BigBad Titan]] during the FinalBattle, the Mane Six end up allying with [[spoiler: Discord]]. As [[spoiler: Celestia]] puts it, they know the latter will probably betray them after they're done with Titan, but they can handle that, and besides, "[[LesserOfTwoEvils better the devil you know]]".
* ''FanFic/ThePowersOfHarmony'': After she [[spoiler: [[DemonicPossession possesses her]]]], [[TheDragon Eclipse]] is able to convince Rarity to help her [[TheStarscream plot against]] [[BigBad Cetus]], and together they plan to bring Twilight into the fold as well. Or at least, [[GuileHero that's what Rarity wants Eclipse to think]].
** Played straight when the Changeling Princess Pupa allies with Applejack's group to stop (her sister) Chrysalis' invasion of Gildesdale, with the promise that afterwards she'll also ally her people with the ponies against Cetus.
* At the climax of ''[[FanFic/PoniesOfOlympus Rolling in Beaches]]'', Spike convinces the hippocampi and Scaly Back River Clan dragons to put aside their differences in order to stop all the dragons [[spoiler: and Mane Six]] turned into monsters by [[TheCorruption the Rainbow of Darkness]].
* In the ''FanFic/PonyPOVSeries'', the backstory for the [[BadFuture Dark World]] has this happening twice between [[EvilOverlord Discord]] and the various LaResistance groups arrayed against him (primarily the [[HeelRaceTurn Changelings]]) -- first during the [[AlienInvasion invasion]] by the [[TabletopGame/{{Warhammer40000}} Imperium of Man]], then centuries later during his [[EvilVersusEvil war with Grogar]] (in both cases, Discord was viewed as the LesserOfTwoEvils).
** Clover's story in the ''7 Dreams/Nightmares'' collection reveals that eons ago, a group of {{Eldritch Abomination}}s escaped the loss of their own reality by entering the POV [[TheMultiverse multiverse]] with the intention of absorbing all beings into their HiveMind in order to torment them for all eternity. This offended ''both'' [[TopGod Fauna Luster and Entropy]] -- the former because She's a strong believer in free will, and the latter because it would potentially prevent the end of all things She [[OmnicidalManiac embodies and desires]] -- leading to Them, Their Mates, and Their respective children working together to defeat these things and [[SealedEvilInACan seal them]] beyond the Gates of Tartarus. It's noted in-universe that this is the ''only'' time the two of Them have ''ever'' agreed on ''anything''.
** During the Wedding Arc, while they're unaware of it, the heroes' efforts are being aided from the sidelines by [[spoiler: Discord and Nightmare Diamond]], who are aware that if Chrysalis succeeds in her plans, she'll be [[AGodAmI powerful enough]] to be a threat even to them.
** During the Finale Arc, [[spoiler: when Discord and his allies begin their [[RewritingReality endgame plan]], it's so horrifying that a group of alternate dimension [[SuperPoweredEvilSide Nightmares]] show up to help stop them]].
* In ''FanFic/TheConversionBureauColdWar'' the United States of America and the Soviet Union put aside all differences to fight a xenocidal race of Ponies.

[[AC: ''Manga/{{Naruto}}'']]
* ''[[http://www.fanfiction.net/s/6585953/1/Boutoku-no-Naruto Boutoku no Naruto]]'' has Kyuubi willing to help Naruto out of hatred for the shinigami. When [[ForWantOfANail Naruto learned Edo Tensai instead of Kage Bunshin]], Kyuubi offered him a deal.
-->'''Kyuubi''': "Because I hate. There are many things I hate. The Sage of the Six Paths. Madara Uchiha. Hashirama Senju. Mito Uzumaki. Minato Namikaze. The toads. Kushina Uzumaki. But more than anything else, I hate the Shinigami. He stole over two thirds of my power, and claimed the Namikize's soul in return, a violation of his own laws and rights. The Shiki Fuin, the contract with the Shinigami, works on a simple basis. A soul for a soul. He did not take my soul, merely my power. When I was sealed, he had nothing to do with it. By the ancient laws, he should have let the Namikaze go, or at least send him to the Pure World, and return my power to me. But he didn't, breaking ancient law. ... You see, he has stolen from me, so I will ensure that he suffers for it! You Naruto, are the key of my vengeance. Through you I will make him suffer. All I ask is that you call back many, many souls, I don't even care for what, and in return, I will give you what all other jinchuuriki can only dream of, my full support."
* In ''[[http://ficwad.com/story/242784 Eroninja]]'', Danzou and Joseki work together to destroy the Suna/Konoha alliance, viewing it as weakening their villages in the long run. Also, if they can instigate a war between the two, they'll have a chance to try and kill each other for their actions in previous wars.

[[AC:''Anime/NeonGenesisEvangelion'']]
* ''Fanfic/AdviceAndTrust'': Shinji's female classmates have a crush on him and team up to keep Asuka away him as each one of them try to ask him out. However Rei does not care for them trying to flirt with Shinji so that Rei teams up with Asuka to keep them away Shinji (and in the process they become [[TrueCompanions good friends]]).
* ''Fanfic/{{HERZ}}'': The US Government and SEELE does not like or trust each other, but they join to destroy secret organization GEIST. On the other hand, GEIST lends its support to NERV's successor HERZ to take down SEELE.

[[AC: RealPersonFic]]
* Villain example: Although [[spoiler: Brox and Co.]] and the Raleka in ''Fanfic/WithStringsAttached'' aren't exactly mortal enemies, they dislike each other considerably. [[spoiler: Brox and Co.]] are contemptuous of Ketafans in general, and the Raleka hate that the skahs want to use the sacred Vasyn for stupid purposes. However, they work together against the four because the Raleka cannot do certain things without [[spoiler: Brox's help]]. We find out later that [[spoiler: Brox and Co.]] were planning to betray the Raleka, but Paul and George inadvertently screwed this up for them.

[[AC: ''Franchise/SpiderMan'']]
* One issue of ''[[FanFic/UltimateSpiderWoman Ultimate Spider-Woman: Change With the Light]]'' has petty criminal Blizzard teaming up with Spider-Woman to help her protect the innocent people in danger during an invasion of New York City by an army of BrainwashedAndCrazy super villains. Taking inspiration from the ''WesternAnimation/DarkwingDuck'' episode where DW teamed up with Megavolt (see below), Blizzard points out that if New York is destroyed, there'll be nothing left for him to rob.

[[AC: ''Franchise/StarTrek'']]
* "Fanfic/FlaihhsamSSpahkh": Spock casts the Romulans giving the Federation a cloaking device for the USS ''Defiant'' as an alliance against a poorly understood enemy (the Dominion). [[DoomedByCanon The alliance had collapsed by the time the Dominion War broke out.]]
* ''Fanfic/PeaceForgedInFire'': Praetor Velal of the Romulan Star Empire becomes disgusted at the underhanded attempts of the Tal'Shiar to disrupt the peace talks between the Empire and the Romulan Republic, and joins with his opposite numbers to take them down. During the talks they also prepare command protocols for joint military operations against enemies like the Undine and Borg.
* ''Fanfic/RealityIsFluid'': Eleya is able to convince an Undine commander that the Federation et al. were ''not'' responsible for the attacks on Undine spawning pools and hatchlings that sparked the current war, and that faction begins targeting the Undine that have been infiltrating the Alpha and Beta Quadrant powers ''and'' agrees to join the fight against the [[BigBad Iconians]] when the time comes. [[spoiler:This pays off in the later story ''Fanfic/BeatTheDrumsOfWar''.]]
* In the fic ''[[https://www.fanfiction.net/s/9694363/1/Safe-and-Sound Safe and Sound]]'', Kirk and Khan pull one of these, similar to the one they pulled in the [[StarTrekIntoDarkness second film]], in order to save the [[spoiler: kidnapped Nyota Uhura, Joanna [=McCoy=] and Lucille Harewood. This time, Khan doesn't betray him]].
* In ''Fanfic/TheWrongReflection'', Eleya allies with the Klingon-Cardassian Alliance to attack a Terran Empire installation, but Eleya worries that the Alliance may turn on her to get its hands on the USS ''Bajor'''s technology.
* In "Fanfic/PastContinuous", as in canon the Federation and the Klingons are technically still at war throughout the 2800 incident (though active hostilities have died down), but they're working together to eject Loriss from Deep Space 9. Eleya remarks to Kagran that after the Jem'Hadar are dealt with "we can go back to hating each other, but until then, I want your word you'll keep [[http://sto.gamepedia.com/K'men K'men's]] people in line."

[[AC: ''Franchise/TolkiensLegendarium'']]
* In ''FanFic/AFarGreenCountry'', Durus and Surad were enemies of Elden and Nellas, but these four quickly become allies when they are chasing a common enemy.

[[AC: ''Transformers'']]
* In the Transformers fanfic ''[[Fanfic/AChildShallLeadThem A Child Shall Lead Them]]'', the Dinobots end up teaming up with Galvatron and Cyclonus to escape the Quintessons. Galvatron ends this alliance fairly quickly when he literally stabs Pterodactus Prime (aka Swoop) in the back.

[[AC: ''TabletopGame/{{Warhammer 40000}}'']]
* ''FanFic/RiseOfTheTau'' has TheRemnant of the Imperium, the [[AlwaysChaoticEvil Forces of Chaos]], [[BloodKnight da Orks]], [[OurElvesAreBetter the Eldar]] and [[spoiler:[[MySpeciesDothProtestTooMuch Farsight's Tau rebels]]]] teaming up against the Tau Empire. [[spoiler:Also, the Chaos Gods, Gork and Mork, Ynnead and [[AscendToAHigherPlaneOfExistence the Emperor]] tearing apart the Deceiver]].

[[AC: ''Literature/{{Worldwar}}'']]
* ''FanFic/WorldwarWarOfEquals'': In light of the pending threat of invasion by the Race, various nations around the world put aside their differences to form mutual defense pacts:
** Egypt and Israel set aside differences and set up a military alliance with Turkey before The Race arrives.
** Colombia and Venezuela, who were waging a war just months before the Race's arrival, agree to a cease fire and start preparing for the incoming invasion.
** Every drug cartel in Ciudad Juarez fights alongside the Mexican military in the city against Race forces.

[[AC: ''Literature/{{Worm}}'']]
* In FanFic/{{Cenotaph}} [[CivilianVillain Purity]] and [[GuileHero Skitter]] team up to fight the ABB. On one hand a flying Blaster, [[TheAtoner ex-Nazi]] single mother. On the other, a ruthlessly intelligent, highly resourcefull teenage highschool student and [[spoiler: newly-minted orphan]] with dreams of being a hero. Together, they fight crime!

[[AC: ''Series/TheXFiles'']]
* The example from WildMassGuessing for ''WMG/TheXFiles'', suggesting that as soon as the aliens arrive on Earth, they'll promptly be beaten back by ''every single MonsterOfTheWeek'', who tend to favor continuing to live on their planet.
[[/folder]]

[[folder:Film]]
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* In the first ''Film/AlienVsPredator'' film, the humans end up helping the preds kill xenomorphs by bringing them their ancient weapons.
* In ''Film/AssaultOnPrecinct131976'' and [[Film/AssaultOnPrecinct132005 its remake]], the remaining personnel of a soon to be shut down police station must put their trust on criminals within it to fight worse criminals laying siege on the place.
* ''Film/BladeII'':
** Blade teams up with the vampires to fight a subspecies of super-vampires that prey on everyone. The vampires end up betraying Blade two-thirds of the way through the movie. Nomak (the lead super-vamp) points out the trope: "Is the enemy of my enemy my friend? Or my enemy?"
--> '''Scud''': So B-man, what do you think?
--> '''Blade''': Sounds like a plan.
--> '''Whistler''': What do you really think?
--> '''Blade''': They're gonna fuck us the first chance they get.
** Also demonstrated during the helicopter flight to the vampire HQ, when Nyssa seems disappointed with Blade over how easily he allows himself to be taken to a place where he may become a prisoner. Scud convinces Blade to show Nyssa his vest made of Semtex, enough to level a city block. Nyssa looks impressed.
* In ''Film/DickTracy'', Tracy considers this trope when deciding whether to accept The Blank's help in defeating Big Boy. Instead, he finally realizes "The enemy of my enemy is my enemy."
* This is what prompts the partnership between Wikus and Christopher in ''Film/{{District 9}}''. [[spoiler:Christopher has spent 20 years collecting enough [[GreenRocks fluid]] to power the aliens' buried shuttle so he can take the mothership and get help, but just as he gets the last of it, his shack is searched by [[MiddleManagementMook Wikus]], who accidentally inhales some of the fluid and starts [[BodyHorror transforming into an alien]]. On the run from his own [[MegaCorp company]], Wikus teams up with Christopher to get the fluid back from MNU, on the condition that Christopher change Wikus back into a human. It doesn't really [[BittersweetEnding work out that way]], but by then Wikus has had enough CharacterDevelopment to be okay with it.]]
* The Sci-Fi movie ''Film/EnemyMine'' (1985) (directed by Wolfgang Petersen), starring Dennis Quaid as a human space marine and Louis Gossett Jr. as an alien soldier. In the midst of an interstellar war between their species, both crash-landed their vessels on a desolate planet and must work together to survive. Years later, after the alien soldier gave birth to a baby alien and died from complications, Dennis Quaid's character raises his adoptive alien son and must protect him and himself from human scavengers who use captured aliens as slaves, until they're both finally found and rescued. It is implied that this event helps to end the war.
* Creator/WillSmith's character in ''Film/EnemyOfTheState'' pulls an on-the-fly BatmanGambit which ties up two troublesome loose ends by getting them to deal with each other. Through some fast talking and well chosen ambiguous language, he [[spoiler: sets up a MexicanStandOff between a rogue NSA team that has taken him hostage and a gang of trigger happy goodfellas who are looking for a fight.]] It does not end well for any of them.
* ''Film/FantasticFourRiseOfTheSilverSurfer'' has the titular team teaming up with Dr. Doom to get the Silver Surfer. Eventually the Fantastic Four team up with the Surfer [[spoiler: after Doom betrays them and takes the Surfer's board for himself. And probably after to prevent Galactus from destroying Earth.]]
* [[spoiler:Storm Shadow]] teams up with the Joes in ''Film/GIJoeRetaliation''.
* ''Franchise/{{Godzilla}}'':
** Mothra convinces her enemies Godzilla and Rodan to stop Ghidorah in ''Film/GhidorahTheThreeHeadedMonster''.
** Battra and Mothra, mortal enemies of one another, joined forces in order to stop Godzilla in ''Film/GodzillaAndMothraTheBattleForEarth''.
** In ''Film/GodzillaVsMechagodzillaII'', Godzilla and Rodan start off fighting for the unhatched egg on Adona Island, Godzilla because it's a Godzillasaurus egg, Rodan because the egg's presence in the nest he had hatched in made the infant his surrogate brother. When the UNGCC eventually decide to use the newly-hatched Godzilla Jr. to lure Godzilla into a fight with Mechagodzilla, the two monsters get mortally wounded, and Rodan sacrifices what little life he has left to revive Godzilla.
** In ''Film/GodzillaVsSpaceGodzilla'', M.O.G.U.E.R.A. is built as yet another anti-Godzilla machine. But when [=SpaceGodzilla=] lands in Fukuoka and starts growing a large mass of crystal across the surface of the city, the M.O.G.U.E.R.A. team ends up having to work with Godzilla to bring down the extraterrestrial invader. This trope is especially applicable for Akira Yuki, the M.O.G.U.E.R.A. captain who had been working to kill Godzilla as revenge for the monster killing his best friend Goro Gondo in ''Film/GodzillaVsBiollante''.
** In ''Film/{{Godzilla 2014}}'', the prologue deals with how MONARCH and the military tried to kill Godzilla in TheFifties with nuclear "tests" in the Pacific. When the M.U.T.O.s awaken decades later and Godzilla starts going after them, Admiral Stenz enacts a plan to kill all three monsters with an even bigger bomb. But the M.U.T.O.s [[spoiler:steal the bomb and use it to feed their nest]]. This foul-up convinces Stenz to accept Dr. Serizawa's suggestion that they ought to leave all the heavy work to Godzilla.\\\
Godzilla refuses to attack the military (who attack him on occasion) because they are opposed to the [=MUTOs=]. It helps, though, that it's quite quickly established that the military is effectively no threat to either of them.
* The first half of ''Film/TheGoodTheBadAndTheUgly'' is a slowly-escalating buildup of hatred between Blondie and Tuco to the point where they're inches from clawing out each others' eyes. Then Tuco learns the location of a graveyard where gold is hidden, Blondie learns the name on the grave where the gold is buried, and they're forced to work together, later uniting against Angel Eyes after he learns Tuco's half of the secret.
* ''Film/HellInThePacific'', about an American and a Japanese soldier trapped on an island together, and which inspired the film in the previous entry, natch.
* This is the whole premise behind ''Film/IndependenceDay''.
* ''Film/JurassicWorld''; [[RaptorAttack Blue]] teams up with [[TyrannosaurusRex Mama Rex]] to battle the ''[[BigBad Indominus Rex]]'' (Given the [[Film/JurassicPark the last time]] these two species met they tried to kill each other, this is a marked improvement)
* French horror film ''LaHorde'' is about a group of cops and criminals joining forces against a horde of zombies. A particularly tense situation because the cops were searching revenge against the gangsters that killed a colleague.
* The film ''Film/{{Krull}}'' begins with this, as two rival kingdoms arrange a political marriage to unify them against the alien invasion. [[spoiler: Sadly, it does them little good as the highly advanced Slayers storm the castle and kill everybody except for the heroic prince and his future bride, who is taken by the invaders.]]
* The main premise of ''Film/TheLeagueOfExtraordinaryGentlemen''.
* ''Franchise/MarvelCinematicUniverse'':
** ''Film/ThorTheDarkWorld''; Thor reluctantly teams up with Loki, as his knowledge of magic and his trip through the other realms in ''Film/{{The Avengers|2012}}'' makes him adept at tracking Malekith and his forces.
** In ''Film/AvengersAgeOfUltron'', Ultron persuades Quicksilver and Scarlet Witch to join him in an alliance, through their mutual hatred of the Avengers. Likewise, they eventually decide to ditch Ultron after seeing just how dangerous he is and team up with the Avengers, even though they aren't on good terms with Tony Stark.
* ''Film/TheMatrixRevolutions''. Neo and the Machines must work together to destroy Smith before he takes over both the Matrix and the Machine World. [[spoiler:After Neo allows Smith to possess him, the Machines use their power through Neo's body to destroy all of the Smith clones.]]
* In the climax of ''Film/MeanGirls'' 2, Jo's former friends decide they hate Mandi more than they hate her and agree to help her.
* Kind of lampshaded in ''[[Film/OceansEleven Ocean's Thirteen]]'', when they decide to include Benedict in their plan:
-->'''Linus:''' We've shaken every tree...\\
'''Rusty:''' I really wanted to avoid it this time...
* In ''Film/OnceUponATexasTrain'', the retired outlaws and the retired Rangers are forced to combine forces to combat a gang of younger, more ruthless outlaws.
* In the ''Film/PiratesOfTheCaribbean'' franchise, every character views the others as either enemies or [[GoodIsDumb incredibly stupid]] pawns, but will readily concede to work together when their priorities mesh. These unholy alliances tend to confuse casual viewers, who are convinced (''très'' incorrectly) that the adversarial role Barbossa plays in the first film completely contradicts the compatriot role he plays in the third.
* Mentioned in ''Film/{{Predators}}'' when Royce tells Isabelle that he intends to free the captured Predator and use that momentary trust to have him find the predator's ship and escape. Isabelle then adds:
--> '''Royce:''' The enemy of my enemy...
--> '''Isabelle:''' That doesn't make it a friend.
* A very short alliance happens in ''Film/RaidersOfTheLostArk'', when Indy and a mook are struggling over control of a gun, when [[TheDragon Toht]] says "Shoot them -- shoot them both", and suddenly Indy and the mook cooperate to shoot the other mook pointing a machine gun at them.
* In the end of ''Film/ResidentEvil Retribution'', Alice has to work with [[spoiler:Albert Wesker]] to ensure the survival of the last of humanity against the [[spoiler:Red Queen]].
* In a PlayedForLaughs moment from ''Film/TheRocketeer'', it's [[NeighbourhoodFriendlyGangsters gangsters]] siding with the police vs. [[ThoseWackyNazis Nazis]]. They may be crooks, but they're ''American'' crooks. And, yes, there's a [[StupidJetpackHitler jetpack]] involved.
* Balthazar and Mathayas resort to this in ''Film/TheScorpionKing'' in order to take down Emperor Memmon.
* ''ShakespeareInLove'': When the Master of the Revels orders the Rose Theater closed indefinitely, thus preventing Shakespeare and company from premiering ''RomeoAndJuliet'', Richard Burbage, owner of rival theater The Curtain, makes a peace offering, saying that they should stand together against their common enemy:
-->"The Master of the Revels despises us all for vagrants and peddlers of bombast. But my father, James Burbage, had the first license to make a company of players from Her Majesty; and he drew from poets the literature of the age. We must show them that we are men of parts. Will Shakespeare has a play. I have a theater. [[CrowningMomentOfHeartwarming The Curtain is yours.]]"
* In ''Film/{{Spectre}}'', Bond and [[spoiler:Mr White]] decide to both go after Oberhauser, and try and protect the former's daughter. Though at the end of the meeting [[spoiler:White]] kills himself. Bond still considers the alliance valid, however, and does pursue the daughter.
* In ''Film/StarTrekIntoDarkness'', Harrison and Kirk temporarily team up [[spoiler:to board and disable the ''Vengeance'']].
-->'''Kirk:''' [[DiscussedTrope The enemy of my enemy is my friend]].
-->'''Spock:''' [[DiscussedTrope An Arabic proverb]] attributed to a prince who was [[AnalogyBackfire betrayed and decapitated by his own subjects]].
-->'''Kirk:''' [[LameComeback Well, it's still a hell of a quote]].
* ''Film/{{Thunderball}}''. During the big underwater fight at the end, when sharks start to show up the SPECTRE frogmen and their opponents stop fighting each other and start attacking the sharks together.
* Subverted by ''Film/TransformersDarkOfTheMoon''. Prime and Megatron teaming up to battle a greater threat is fairly common in ''Transformers'' media, but this time [[spoiler: when Megatron offers a truce, Prime responds by cutting his head off]].
* ''Film/WestSideStory'': Despite their hatred of each other, the two gangs seem pretty united in their hatred of the cops--the Jets laugh when Bernardo mouths off to him, they pretend to be buddies to avoid suspicion, and when Shrank insults Bernardo, it's Riff who hold him back from attacking him.
* In ''Film/TheWrongArmOfTheLaw'', the tactics of an IPO mob from Australia ends up making strange bedfellows of not only underworld rivals, but also the underworld itself and the police.
* ''Film/XMen'':
** The entire point of ''Film/X2XMenUnited'': the X-Men team up with Magneto and Mystique to stop a human villain from killing all mutants. [[spoiler: Right up until Magneto and Mystique decide to invert the attack and have all the non-Mutants killed instead.]]
** Wolverine and Sabretooth in ''Film/XMenOriginsWolverine'' against InNameOnly {{Deadpool}}.
** The ending of ''Film/XMenFirstClass'' implies that the Americans and Soviets had found a common enemy in the mutants.
** In ''Film/TheWolverine'', Harada cites Viper as a [[spoiler: "means to an end," and voices his displeasure towards her consistently. Viper seems indifferent to Harada attitude-wise, but she just sees him as another inferior underling.]]
** ''Film/XMenDaysOfFuturePast'':\\\
Xavier and Magneto unite against the Sentinels that threaten all of mutantkind with extinction. [[spoiler:Although Magneto ends up attempting his own plans for mutant superiority and, ironically enough, winds up jeopardizing the plan to save mutantkind.]]\\\
Trask and Stryker are shown handing over their plans for the Sentinels to the DirtyCommunists at the Paris Peace Conference. Trask is even grateful for the mutants for providing a common enemy which will unite humanity in a struggle for survival.
[[/folder]]

[[folder:Literature]]
* In ''Literature/TheBookOfMormon'' the Nephites and the Lamanites, usually mortal enemies of one another, join forces against the even more murderous Gadianton robbers in 3rd Nephi.
* ''[[Literature/TheEnemyPapers Enemy Mine]]'' by Barry B. Longyear, the basis for the movie mentioned above.
* ''TabletopGame/{{Warhammer 40000}}'':
** In William King's novel ''Literature/SpaceWolf'', the Marines chose Ragnar and Strybjorn for Marines when they were fighting each other to the death, and both were mortally wounded. Ragnar's desire for {{Revenge}} is kept at bay by the knowledge that the Marines will not let him. [[spoiler:Finally, when they are fighting Chaos Space Marines, Strybjorn saves Ragnar's life, and shortly thereafter goes down. Ragnar realizes that he neither should nor does want Strybjorn to die; he sends the others on and [[NoOneGetsLeftBehind stays to treat and bring Strybjorn with them]].]]
** The first ''Literature/CiaphasCain'' novel, ''For the Emperor'', forces the Imperial Guard into an uneasy truce with a Tau diplomatic security contingent because neither side considers the crappy backwater planet Gravalax worth getting into an all-out war over. [[spoiler:It turns into EnemyMine after the two sides discover there's a genestealer cult trying to ''provoke'' that war, and the Tau aid the Guard in restoring order. The suicide squad Cain puts together from condemned Guardsmen joins up with a Tau pathfinder unit down below, while on the surface, a Tau Hammerhead hover-tank helps the 597th break through a traitor PDF position.]]
** HistoryRepeats in the ninth novel, ''The Greater Good'', where the Tau and Guard start out fighting, [[spoiler:then are forced to join forces when their war is rudely interrupted by a tyranid hive fleet]].
** Subverted in ''[[Literature/SpaceMarineBattles World Engine]]'' - after realizing that both the Astral Knights and Turakhin are there for Hequroth's blood (engine coolant?), the two simply decide to ignore each other until the Overlord's dead.
** In another ''Literature/SpaceMarineBattles'' novel, ''Malodrax'', Lysander is disgusted to find an ally in a daemon prince, but goes with it, as he wants revenge on Thul and Shalhadar wants to teach the Iron Warrior his place.
* And in the ''Literature/WarchildSeries'', Captain Azarcon, a SpaceMarine, and Niko, human sympathizer of the alien [[LaResistance resistance]] work together to [[spoiler:rescue hostages and capture gunrunners. This collaboration leads to the end of the war... for a time, anyway.]]
* In Creator/EEDocSmith's ''[[Literature/SkylarkSeries The Skylark of Space]]'', the villain [=DuQuesne=] agrees to act as one of the party until they return safely to Earth, even though he wants the hero Richard Seaton dead. Ultimately Seaton [[spoiler:makes his best friend hand BOTH his guns over to [=DuQuesne=] because [=DuQuesne=] is the better shot, and then Seaton and [=DuQuesne=] stand side by side and mow down their common enemies until all four guns are empty.]] In ''Skylark [=DuQuesne=]'', [=DuQuesne=] enlists Seaton's help in fighting an otherwise unstoppable alien menace and ends up [[spoiler:winning the war and saving Seaton's life in the process]], though by this time [[spoiler:his reasons for wanting Seaton dead no longer apply]]. The fact that each man at least respects the other's abilities helps.
* ''{{Worldwar}}'', by Creator/HarryTurtledove. Aliens invade in 1942. The Axis are working with the Allies. Another one occurs between the Jews in Europe and the Race. Aliens who never figured out discrimination or Nazi Germany. Played with in the sense that they aren't quite sure who'd be worse for mankind. (The Jews play it both ways,[[HeelFaceRevolvingDoor working with the Race or the Germans depending on who's a bigger threat at the time.]])
* In ''Literature/WorldWarZ'', after the zombie outbreak Israel pulls back from the Palestinian territories and offers asylum to any uninfected Palestinian refugees, both sides agreeing to cooperate in the face of an apocalyptic disaster. When the outbreak is contained they form a permanent truce and Israel agrees to a two-state solution.
* In ''Literature/HarryPotterAndTheDeathlyHallows'', Narcissa Malfoy [[spoiler:helps Harry continue faking his death to Lord Voldemort in order to save her family.]]
* Literature/TheRiftwarCycle has a few:
** In ''A Darkness at Sethanon'', the Heroic Prince teams up with the former EvilChancellor to defend a city against the TheHorde.
** In ''Honored Enemy'', a band of Kingdom raiders allies with a Tsurani patrol in order to survive pursuit from a [[AlwaysChaoticEvil Moredhel]] company. The story plays during the war between the Kingdom and the Tsurani and revolves around the tension this causes.
** In ''VideoGame/BetrayalAtKrondor'', the moredhel chieftain Gorath seeks out Prince Arutha to curb another upcoming invasion that he feels would be too costly for his people.
** In the Chaoswar Saga, the final trilogy, an enemy shows up who is so dangerous that the God of Evil comes in on the side of Good.
* The ''Literature/{{Animorphs}}'' only teamed up with their main enemy, Visser Three, twice: to defeat a race of annoying, psycho, tiny-tiny-tiny aliens with a shrink ray and a mass Napoleon Complex, and to escape from a bunch of mutated blue fish-people that want to kill and stuff them for their DerelictGraveyard. On the other hand, Visser One freed them from Visser Three's prison in her very first appearance. Since the Animorphs are guerrilla fighters and Visser One is the main advocate for a stealth invasion (and her host is [[spoiler:Marco's mom]]), they're not unwilling to accommodate her if it hurts Visser Three's credibility -- but they're not unwilling to use it as an excuse to double-cross her, either...
** In ''Elfangor's Secret'', the Ellimist and Crayak both agree that the Time Matrix should not be in the hands of a mere mortal and help the Animorphs stop Visser Four.
** In the last few books, they team up with Tom and his followers in order to hijack the Pool Ship. Both sides then double-cross each other, but the Animorphs end up winning in the end.
** In ''The Andalite Chronicles'' there's a brief few minutes where Elfangor and the future Visser Three (then only Visser Thirty-Two) team up to escape certain death.
* In ''The Other Wind'', the last (so far) in Creator/UrsulaKLeGuin's ''Literature/{{Earthsea|Trilogy}}'' series, representatives of four cultures normally at loggerheads - if not outright enmity - have to pool their respective mythological knowledge in order to figure out the truth about an ancient evil.
* In the ''[[Literature/HonorHarrington Crown of Slaves]]'' sub-series of the ''Honorverse'', Victor Cachat and Anton Zilwicki are two intelligence operatives from the warring Star Empire of Manticore and the Republic of Haven (Formerly People's Republic of Haven). They team up to investigate Mesan intrigue and how it impacts the war. It's implied this sub series may lead to a Grand Alliance...
** Really, by now it's evident that The Climactic Conflict will be between the Andermani/Havenites/Manticore/Maya/Beowulf/Torch/others versus the frikkin' huge Solarian League (minus bits like Maya)/Mesa/whatever else we haven't seen yet. It promises to be ''awesome''.[[note]]Though in context, Manticore and (post-Theisman Coup) Haven are natural ''allies'', particularly considering how vehemently both of them enforce the Cherwell Convention. Now that the reason for the war -- the PRH's expansionist policies -- is gone, the true Republic has been restored, and all the diplomatic snafus are cleared away, it would have been more surprising if they ''hadn't'' allied together.[[/note]]
** As of ''Mission Of Honor'', [[spoiler:Manticore and Haven have signed both a peace treaty and a military alliance]].
* In the ''TheEternalChampion'' story by Creator/MichaelMoorcock, humanity has unified solely because of the presence of the alien Eldren. Ekrose, the protagonist states that, absent the Eldren presence, humanity would be at war with itself. This is a key reason for his decision to [[spoiler:kill the entire human race]]
* Creator/TadWilliams' ''Literature/{{Otherland}}'' CyberPunk novel series has a prominent example of this in the fourth book. After PsychoForHire John Dread usurps control of the Otherland network, CorruptCorporateExecutive Felix Jongleur, who up until now has regarded the heroes as an annoyance (if he was aware of them at all), finds himself on equal footing with them: trapped in the network and [[BroughtDownToNormal unable to use his godlike powers]].
* This is a major part of the plot of all 3 novels in CS Friedman's ''{{Coldfire|Trilogy}}'' trilogy: an immortal vampire and a priest team up to fight mutual enemies. [[spoiler: By the end of the novels, the priest has been thrown out of his church and the vampire's patron Dark God has rescinded his immortality and cast him into Hell for being insufficiently evil. Turns out saving the world isn't compatible with maintaining that black-as-a-moonless-night karma, who knew?]]
* ''Literature/TheHobbit''. The dwarves are about to fight a battle with the Lake-men and Wood-elves to determine who will gain Smaug's treasure. Gandalf appears and warns them that an army of goblins and wargs is approaching, and they must join together to fight the evil attackers.
* In ''Literature/{{Dragonlance}}'', black robed mages ally themselves with the good guys every now and then, for example to drive off the Dark Queen in ''Literature/TheLegendOfHuma'' and during the War of the Lance. ''Dragons of Summer Flame'' was based around this trope. Also Fistandantilus and the Kingpriest used each other for their own goals.
* In ''Literature/TheLegendOfDrizzt'' Drizzt Do'Urden and Artemis Entreri must team up and fight back to back in an effort to get out of the Underdark at one point.
* It is briefly mentioned in the ''TabletopGame/{{Warhammer 40000}}'' novel ''Literature/GreyKnights'' that the underhive gangs of Volcanis Ultor "buried their enmities for one long night" to do battle with a powerful gang of Chaos followers.
* ''Literature/{{Twilight}}'': The Cullens ([[FriendlyNeighborhoodVampires Vegetarian Vampires]]) and the Quilettes ([[FurAgainstFang Werewolves born to kill vampires]]), had to work together to destroy an army of newborn vampires that were killing people in general and wanted to kill Bella Swan in particular.
* ''Franchise/StarWars'':
** While most of the clone troopers went on to serve the empire, the True Mandalorians (a.k.a. the group that nearly destroyed the Galactic Republic 4,000 years ago) fought alongside the rebels to retain their heritage as well as kill those who had betrayed their own kin.
** ''Literature/FateOfTheJedi'': Jedi and the LostTribe of the Sith form an alliance (in the titular ''Allies''), to investigate and subdue a feminine EldritchAbomination named Abeloth. The arrangement doesn't last long, but it does allow Luke's son Ben to pick up a [[DarkActionGirl Sith Apprentice Girlfriend]]...
** Speaking of ''Literature/FateOfTheJedi'', Apocalypse reveals that the Father, the Son, and the Daughter had fought against Abeloth multiple times after she got corrupted. The mere fact that the Son, who is the embodiment of the Dark Side, would ally himself with the Daughter, who is the embodiment of the Light Side, even when they would more often than not fight each other to the death had it not been for the Father's influence would imply that this trope came into play.
** ''TheThrawnTrilogy'': Mara Jade sees her having to constantly work with Luke as this trope, especially with that [[KillMeNowOrForeverStayYourHand not-so-covert wish to kill him]]. He doesn't see it the same way, though. At the end of the trilogy, they've become FireForgedFriends, and by the ''Literature/NewJediOrder'' series, they're a married BattleCouple.
** ''Literature/TheTruceAtBakura'' is this trope personified, with the Imperials forced to work with the Rebels to defeat the evil Ssi-Ruuk. [[spoiler:Once it becomes clear that the aliens are in retreat, the Empire reverts back to their evil selves and re-declares war on the Alliance.]]
** A couple of times in the ''Literature/NewJediOrder''. In ''Conquest'', Anakin Solo teams up with [[ScaryDogmaticAliens Yuuzhan Vong]] warrior Vua Rapuung to rescue his friend Tahiri from a MadScientist who is also Rapuung's enemy (and ex-lover). In the last book, ''The Unifying Force'', Han Solo and Boba Fett find themselves briefly fighting side-by-side against Vong warriors. Finally, at the very end of the series, a subversion comes into play- Nom Anor, RecurringBoss for most of the series, allies with the heroes only out of a selfish sense of self-preservation, and immediately tries to flush them out an airlock when he feels they've outlived their usefulness. For his part, he 'does'' eventually [[BecomingTheMask Become the Mask]] of the Prophet, and genuinely leads an uprising of the Shamed Ones (who have come to view the Jedi as saviors) against the rest of the Vong.
** In ''Iron Fist'', one of the ''Literature/XWingSeries'' novels, Admiral Rogriss of the Empire offers a temporary unofficial alliance with Solo and his fleet to hunt down Warlord Zsinj, and then, in his words, they can go back to their personal ideological differences without inviting anyone else to play.
** During the ''Literature/HandOfThrawn'', Grand Admiral Pellaeon is of sufficient power that when he states it's time for the Empire to sue for peace with the Republic, ''they sue for peace''. However when a conspiracy led by Moff Disra of Bastion, his Dragon ([[spoiler: a stormtrooper modified with [[MagnificentBastard Thrawn's strategic skill]]]]), and a con artist posing as a resurrected Thrawn threatens the entire process, Pellaeon works ''with'' agents of the New Republic to help foil the diplomatic crisis engineered by Disra.
*** Additionally, Baron Fell attempts to recruit Luke and Mara as representatives of both powers into forging the exact same sort of alliance with the Chiss against a major undisclosed threat Thrawn had spent his time in "exile" along the Outer Rim preparing to fight, [[spoiler: which turns out to be the Yuuzhan Vong]].
* ''Literature/ASongOfIceAndFire'' has some interesting ones. Jaime Lannister and Brienne of Tarth are forced to coexist when Catelyn Stark sends Brienne to trade Jaime for Sansa, but though they start out quite hostile, they've reached a point of sort-of friendship and mutual respect (and [[ShipTease maybe more]]). A more hostile camaraderie briefly exists between Sandor Clegane and Arya Stark; she still hates him, sure, but when it comes down to it they work well together, and she's probably more like him than she'd like to acknowledge. On a larger scale in ''A Dance with Dragons'' [[spoiler: the wildlings and the Night's Watch agree to work together against the Others. Many of them aren't happy about this, rendering the alliance extremely tenuous.]]
** While they never actually get round to fighting, Stannis Baratheon makes it clear he views Robb Stark as just as much of an enemy as BigBad Joffrey Baratheon. By Book 5, Robb has been betrayed and killed by some of his own soldiers, while Stannis' forces have been decimated. Subsequently, the Northern soldiers who remain loyal to the Starks join up with Stannis.
** On the outbreak of war, the Tyrells initially throw their support behind Renly Baratheon. When Stannis assassinates Renly, they jump ship to Joffrey and the Lannisters in order to take revenge on Stannis.
* Reversed in the ''Franchise/StarTrekExpandedUniverse''. In the wake of the Borg invasion, several previously non-aligned minor enemies such as the Tholians join the Typhon Pact in order to leave the Federation and Klingon Empire surrounded by a hostile power. The Tholians, well-known for xenophobia, join for this reason ''alone''.
* The DaleBrown novel ''Air Battle Force'' culminates in [[spoiler: the Taliban detachment that served as primary enemy of that book]] working with Turkmen and American forces against the Russians, which continues into ''Plan of Attack''.
** ''Edge of Battle'' has [[spoiler: Zakharov and Task Force TALON]] reluctantly cooperating after Comandante Veracruz's double-cross, though it doesn't last.
** ''Strike Force'' is centred on an Iranian coup leader and former enemy of Dreamland who now needs their help. The blurb tells you as much!
* ''A Pict Song'' by Creator/RudyardKipling. "No indeed! We are not strong, But we know Peoples that are..."
* ''The White Rose'' by Glen Cook. In the final battle the Lady -- sorceress leader of the northern empire -- needs the help of the white rose to take down the dominator, her husband and a much better sorcerer. The white rose creates a area where magic cannot be used and therefore is vital to taking down the greatest sorcerer in known history.
* In ''[[Literature/TheIcewindDaleTrilogy Streams of Silver]]'', Drizzt Do'Urden and Artemis Entreri declared a temporary truce in order to join forces against a common enemy (the [[AlwaysChaoticEvil gray dwarves]] inhabiting Mithral Hall). Some time later, in ''[[Literature/LegacyOfTheDrowSeries Starless Night]]'', Catti-Brie and Entreri teamed up to rescue Drizzt from the drow, who were holding all three of them captive and who would have eventually executed both Drizzt and Entreri. (Or condemned them to a FateWorseThanDeath.)
* ''Literature/ArtemisFowl'' and Holly do this in ''The Arctic Incident'' and ''The Eternity Code'' -- they are opponents, or at the very least rivals with a sore history, even though they have both saved each others' lives. In ''The Arctic Incident'', they cooperate as part of a deal: Artemis uses his above-world influence to investigate a smuggler, while the LEP use their advanced technology to help rescue Fowl Senior. In ''The Eternity Code'', their relationship is more tense as they cooperate to resolve a situation Artemis is partly to blame for. By ''The Opal Deception'', they are friends, and later [[ShipTease possibly more than that]], though that does not go anywhere.
* A complicated example occurs in the "Richard Bachman" (actually Stephen King) novel ''Literature/TheRegulators''. The demon Tak is possessing a young autistic boy, and is somehow using the boy's unique mind to augment and give shape to its supernatural power. Both the boy and the demon are fans of cheap westerns and a Power-Rangers style TV show, both of which the demon uses as inspiration for his means of destroying the town. In the show-within-a-show, the heroes team up with their enemy to stop a something from destroying Earth. Tak channels this as the final assault on the protagonists.
* [[TheHero Sam]] and [[BigBad Caine]] of the ''Literature/{{Gone}}'' series (who are ironically brothers) have teamed up ''twice'' during intervals of trying to kill each other;
** They teamed up in ''Hunger'', against [[TheDragon Drake Merwin]]. Sam wanted him dead because he tortured him senselessly and this was enough to piss even ''him'' off, and Caine's motive was spontaneous rage for him trying to his [[UnholyMatrimony girlfriend]] [[TheDarkChick Diana]].
** In ''Lies'' they have reluctantly paired up again to murder [[spoiler: Caine's daughter.]]. They fail miserably, but it's a awesome fight scene.
* This is how [[Literature/VorkosiganSaga Miles Vorkosigan's]] parents got together, in ''Shards of Honor''.
* In Creator/RobertEHoward's ConanTheBarbarian story "Literature/RoguesInTheHouse" after Murilo and Conan have broken into Nabonidus's house to kill him, and find that he is not, after all, the BeastMan, they ally with him to deal with it.
* In ''Shattered Sky'', the third book in the ''Literature/StarShardsChronicles'' trilogy, the good guys team up with [[spoiler:Okoya, the villain of the second book]] to defeat a greater enemy that threatens to destroy the universe.
* In ''Literature/TheTrailOfCthulhu'', it's revealed that Professor Shrewsbury and Hastur (presented here as Cthulhu's [[CainAndAbel rival brother]]) have struck an alliance to keep Cthulhu from waking up.
* In Literature/TheDresdenFiles series, Harry teams up with Lara Raith multiple times over the course of the series to help them reach mutual goals.
** They do this quite often in fact, to the point at one instance Lara indicates quite clearly she would rather [[IsThatWhatTheyreCallingItNow rule]] with Dresden together than for them to keep fighting each other.
*** Harry has shown that he finds it particularly (or at least very) difficult to resist her, and has even used this fact to taunt a mutual enemy, one of her cousins with whom she shares a bitter rivalry. It was later revealed in Cold Days that [[spoiler: if Kincaid had refused to kill him in Changes, his second choice would have been to go OutWithABang at her...um, ministrations.]]
** He does this even more with crime lord John Marcone; it eventually gets to the point where they've had common goals so often, they're more enemies in principle than practice.
** The novel ''Turn Coat'' is one long, extended Enemy Mine sequence between Harry and his former nemesis Donald Morgan, who finds himself needing Harry's help to survive.
* In the ''Literature/CodexAlera'' series, the Canim have Gadara, meaning "trusted enemy". Gadara can often work together, as [[spoiler: Tavi and Varg]] eventually do.
** The trope is carried much further with the appearance of [[spoiler:the Vord]], which allows the First Lord to forge tentative alliances with all of Alera's long-standing enemies to fight together against the new opponent. In fact, the First Lord ends up saying [[spoiler:the Vord]] was the best thing to happen to Alera.
* In ''Series/TheManFromUNCLE'' novel ''[[http://www.amazon.com/dagger-affair-Man-U-N-C-L-E/dp/B0007KDMFI The Dagger Affair]]'' by David [=McDaniel=], UNCLE and THRUSH operatives work together to stop DAGGER, a new organization armed with advanced science. In the end a THRUSH-controlled fighter jet kamikazes the DAGGER base, using sheer momentum to overwhelm its force field. There's a poignant moment where the leader of THRUSH reminds the leader of UNCLE of their former friendship and gives him a copy of ''Literature/NineteenEightyFour''. Then he ends the truce ahead of the agreed time, not that anyone expected anything else. We also discover that the full name of THRUSH is the somewhat unwieldy "Technological Hierarchy for the Removal of Undesirables and the Subjugation of Humanity".
* In the second book of the ''Literature/{{Mistborn}}'' trilogy, Vin finds herself working with an enemy - [[spoiler:Ten-Soon, who had assumed the identity of Ore-Seur, and had been working on behalf of Straff Venture.]]
** Then there's [[StalkerWithACrush the Watcher]], who is first introduced when she notes that she missed fighting with that one guy who is probably an assassin but hasn't seriously tried to kill anyone yet. His first proper appearance is him saving her life from the sidelines as she hadn't realised one of her opponents had Atium.
* This happens in ''Literature/ThePathToWar'' where Tahniya is soul bound to Zan as punishment; they can't stand each other.
* Bertie Wooster and [[spoiler:Sir Roderick Glossop]] team up in ''[[Literature/JeevesAndWooster Thank You, Jeeves]]'' and end up getting along very well, even exchanging invitations to lunch. Bertie notes that he can't be all bad, since he [[spoiler:beat up Chuffy's BrattyHalfPint cousin Seabury]].
* This is the plot of Creator/HarryHarrison's ''Stars and Stripes'' AlterhateHistory trilogy. After the British declare war on the Union, they accidentally sack a Confederate town instead of a Union fort (the stars-and-bars flag confuses them). In response, the Union and the Confederacy agree to a cease-fire and, eventually, the Confederacy re-integrates into the USA and abolishes slavery in the face of the British Empire. One of the main criticisms of the trilogy is how easily this happens without too many problems.
* The alliance of the outlawed Malazan commander Dujek Onearm with his enemy Caladan Brood against the [[OmnicidalManiac omnicidal]] Pannion Seer in the third volume of ''TheMalazanBookOfTheFallen''. [[spoiler:It later turns out that Dujek's outlawry was a XanatosGambit by Malazan Empress Laseen to win Caladan's support for the war.]]
* In Creator/TomKratman's ''Literature/{{Caliphate}}'', in spite of a continuing state of low-level conflict between them, the [[ExpandedStatesOfAmerica Imperial States of America]] and the Celestial Kingdom of the Han (China) work together to eliminate a significant [[spoiler:bioweapon]] threat posed by the eponymous Caliphate.
* ''Literature/LegacyOfTheDragokin'' has three examples:
** The premise is Baalaria and Drewghaven teaming up to quell raiders produced by civil unrest.
** Zarracka and [[spoiler: Mordak]] team up because they both hate Daniar.
** [[spoiler: Everyone still alive joins forces against Kthonia.]]
* In AndreNorton's ''Literature/{{Catseye}}'', faced with Troy's suspicion, Rerne proposes that they join forces against a common foe.
* A typical strategy in ''TheHungerGames'', especially used by the Careers. Involves forming alliances with one or more other tributes to help each other, stay alive longer, and maybe take out other tributes. But of course, these can only be temporary, since the pool of remaining tributes gets smaller and smaller... There's only ''one'' victor, after all.
* In Creator/JulieKagawa's ''Literature/TheIronDaughter'', Ironhorse allies with Meghan because he considers the Iron King to be false.
* In ''Literature/APassageToIndia'', which is set in the [[UsefulNotes/TheRaj British Raj]], the religious divisions among native Indians - particularly those between Hindus and Muslims - are only set aside when they find themselves both in conflict with the ruling British authorities. As Dr Aziz says to [[AuthorAvatar Cyril Fielding]], "We may hate each other, but we hate you more."
* In ''Literature/TheHouseOfNight'', Aphrodite and Zoey start out with an ArchEnemy relationship, which ends up morphing when the two of them need each other and have a common enemy. Zoey and Aphrodite frequently have JerkassHasAPoint moments.
* ''Unintended Consequences'' by Stuart Woods has BigBad Ivan Majerov attempt to take over the assets of Stone Barrington through many means, including Stone's murder. He doesn't succeed. The following book, ''Doing Hard Time,'' shows his men with roots in TheMafiya plotting to hurt Stone's son, Peter, as revenge. They make the fatal mistake of thinking fugitive-in-hiding Teddy Fay (a serial killer with various skills, including flying planes and speaking Russian) overheard them and try to take him out as well. Teddy kills them, points out their intents to Peter, and takes it on himself to protect the younger man. He leaves behind two other bodies as well before meeting Stone (and finding out Majerov's [[TheDragon second,]] Vlad, aka [[NamesToRunAwayFromReallyFast "The Viper"]] has also arrived, and the two men put together a plan to take both Russians out of the picture permanently. [[spoiler: Teddy is able to kill The Viper in his room with a bullet, and poses as a pilot to kill Majerov himself with a syringe of potassium. As this saves Peter's life, these acts later lead to Stone using his pull with President Will Lee to arrange for a presidential pardon for Teddy.]]
* The point of the ''Literature/LeagueOfMagi'' story "Wait," and ultimately subverted when [[spoiler: one of them kills the other.]]
* In ''Literature/LastSacrifice'', Rose teams up with [[spoiler:Victor Dashkov]] against the mysterious assassin of [[spoiler:Tatiana Ivashkov]].
* The end of the first book of the ''Literature/AhrimanTrilogy'' features the hero teaming up with a man whose entire job is hunting down and killing mages like him.
* Happens in the backstory of ''Literature/RememberToAlwaysBeBrave'', and shown in with the prequel ''{{Literature/Cilva}}'', the Roman Republic is called in by the Alliance to aid an uprising in Zesan/Azania's capital city of Cilva. It's not a trap, but its not really an uprising either. It is mused on as a total wreck of a battle. Later on in Remember To Always Be Brave, the Roman Republic and the Alliance of Nations unites [[spoiler: to fight the Tenebrae invaders, and Corna turns on the Tenebrae after they use a cult base as a experiment ground for their biological terror weapon.]]
* Of a sort in ''Literature/{{Insurgent}}'', Cara extremely dislikes Tris [[spoiler:(due to Tris [[ShootTheDog shooting a brainwashed Will]]]]) but is fully willing to assist in Tris's plans. She even admits to Christina that logically, Tris did what had to be done.
* In ''Literature/TheEmpressGame'', it gets complicated. Blame for the conquest of Ordoch can be attributed both to the IDC (which planned it) and to Dolan (who led the Empire there in the first place). Kayla, an Ordochian, is willing to work with an IDC team while opposing Dolan, since she thinks there's a possibility of freeing Ordoch that way. [[spoiler:Meanwhile, Tia'tan is pursuing the same objective by working with Dolan against the IDC team. She and Kayla each accuse the other of being a traitor on account of the alliances they made. When they work past that, they team up themselves.]]
* In ''Literature/ThePillarsOfReality'', Mari and Alain start out thinking of each other as enemies who have to work together to survive. As they get to know each other, however, they begin to realise that they're only enemies in the first place because each of their respective Guilds are either wrong or lying about the other.
[[/folder]]

[[folder:Live Action TV]]
* Happens regularly in soap operas. For example, on ''AllMyChildren'', lifetime enemies Adam and Palmer teamed up to kill a rapist.
* ''Series/{{The 100}}'' Season 1 had a war occur between the Grounders and people from the Ark. In Season 2, the two factions ally against Mount Weather, which is kidnapping people from both sides to use as HumanResources, and has by far the most advanced military on the Ground.
* ''Series/TwentyFour'': Season 2, Jack is forced to work with Nina Myers, the woman who killed his wife, in order to find information on the season's terrorist threat. Likewise, in season 6, Jack teams up with the previous season's BigBad [[spoiler:Charles Logan]] to investigate a corrupt Russian diplomat.
** Season 5 has him team up with Christopher Henderson to stop bigger threat Vladimir Bierko.
* ''Series/TheFortyFourHundred'': An unusual example occurs where Jordan Collier and Tom Baldwin must work together to escape a dream sequence (whose actual purpose is to get people to work together). It's an odd example in that neither character is a villain: as Tom is a government official doing its best to deal with bizarre circumstances (and sometimes engaging in some morally-questionable methods of dealing with problems) and [[FauxSymbolism Jordan Collier]] is trying to avert the end of civilization, but supports anarchy and believes everyone should take Promicin (a drug that has a 50% chance of death or super-powers).
* ''Series/{{Airwolf}}'': In the episode "Condemned", String and Caitlin have to work together with some UsefulNotes/RedsWithRockets to acquire the antidote for a lethal virus. Then stop [[UsefulNotes/FromRussiaWithNukes three nuclear warhead-equipped cruise missiles from hitting the island]]. Soviets attempt to acquire Airwolf, but don't get very far and stop this before things get hairy between them. The parties depart friends.
* ''AmericanGothic'': Buck, Dr. Crower, Gail, and Ben are all forced to work together in the episode "The Beast Within", when Ben's deranged brother takes them all hostage: Dr. Matt's hand is hurt so he has to coach Ben in performing an emergency surgery, while Buck and Gail have to work together to find the lost key to the handcuffs holding them and Caleb prisoner. (The fact this all turns out to be [[spoiler:ThePlan orchestrated by Buck]] rather subverts the trope.)
** And at the very end of the series, Merlyn is forced to go to Dr. Peele, Selena, and Ben for aid in [[spoiler:digging up Buck's 'corpse']] so that the two of them can then work together to save Gail and stop Caleb's rampage.
* ''Series/AmericanHorrorStoryMurderHouse'': Constance forms an alliance with Moira, the ghost of the woman she murdered, to dispose of a sleazy developer who plans to tear down the house.
* ''Series/{{Angel}}'': SubvertedTrope during the fourth season, when Angel comes to Lilah for information on the Beast and suggests they work together:
-->'''Angel:''' You're afraid of what's coming. Maybe we can help each other. The enemy of my enemy--\\
'''Lilah:''' Can kiss my ass too.
** However, Angel eventually convinces Lilah to give him the information he was seeking, with the argument that Angel will either use it to stop The Beast (in which case Lilah wins) or Angel will die trying (in which case Lilah also wins). As it turns out he decided to [[spoiler: TakeAThirdOption]], so in the end it's more played straight.
** And in the end, she does ally with the team anyways.
* ''Series/{{Arrow}}'':
** Despite his mistrust and dislike of him, Detective Lance asks for the Arrow's help on multiple occasions. By Season 2, this has evolved into them having formed an understanding, and Lance being a FriendOnTheForce.
** The Season 2 finale "Unthinkable" has two examples. The Arrow allies with the League of Assassins to take on [[BigBad Deathstroke]] and his {{Super Soldier}}s, while Diggle and Lyla team up with the SuicideSquad to stop ARGUS from [[GodzillaThreshold bombing the city in an attempt to stop the soldiers]].
** Season 3 has Oliver teaming up with his old enemy Malcolm Merlyn in an effort to learn about the League's methods and fighting style in order to mutually protect each other and Thea from the League's sights. The two still can barely stand each other, though.
* ''Series/BabylonFive'': "Dust to Dust". Bester teams up with Garibaldi to catch drug smugglers. [[Creator/JMichaelStraczynski JMS]] [[WordOfGod explicitly stated]] this was to prevent DiminishingVillainThreat.
** Another episode has a scene deliberately written in defiance of the trope, which Straczynski hates. Mortal enemies Londo and G'Kar are [[LockedInAFreezer trapped in an elevator]] with a fire outside draining their oxygen. Londo declares that they'll have to work together to escape but G'Kar refuses: he's perfectly fine with dying as long as he gets to see Londo die, too.
--->'''G'kar:''' (...)But I don't have to kill you. I don't have to do anything! And I still get to watch you die! I find this most appealing!\\
'''Londo:''' This is ''insane''! We ''must'' work together!\\
'''G'Kar:''' ... No. As the humans say: "Up yours, die." ''*Continues giggling*''
*** The irony of this is that, if the Narn surrender treaty didn't include such harsh penalties for G'Kar just killing Londo, he might happily have helped. However, thanks to the excessive measures taken to prevent Narns attacking Centauri, this was the only way G'Kar would ever get to see Londo die.
*** Further irony is piled on by finally [[PlayingWithATrope playing the trope straight]] when Londo's ProphecyTwist kicks in. At that point G'Kar is one of the last two friends Londo has.
** Londo and G'Kar team up again in the "And The Rock Cried Out, 'No Hiding Place'" when Londo constructs a BatmanGambit [[spoiler: to enlist G'Kar's aid in destroying Lord Refa, whom Londo believes killed his lover Adira and was responsible for using mass projectors on the Narn homeworld. Londo supposedly tricks G'Kar into leaving the sanctuary of station under the pretext of having the Centauri forces arrest him on Narn in Refa's presence; in fact, it was so G'Kar could make contact with the Narn resistance and set up the NoHoldsBarredBeatdown Lord Refa receives [[CrowningMusicOfAwesome to the tune of the episode's eponymous Gospel tune]].]]
** Bester invokes the saying "the enemy of my enemy is my friend" in persuading [[spoiler: Sheridan to work with him against the Shadows, whom Bester has also come to mistrust, in "Ship of Tears".]] He brings it up again when he finds out that [[EvenEvilHasLovedOnes his lover]] was abducted to become part of their WetwareCPU.
-->'''Bester:''' [[ItsPersonal Your war is now my war.]]
* ''Series/{{Galactica 1980}}'': The episode "The Return of Starbuck". Often the only episode of the series that some fans of the [[Series/BattlestarGalactica1978 original series]] will [[FanonDisContinuity accept as continuity]].
* ''Series/BattlestarGalactica2003'': Has this quite a few times as well, usually involving Cylons and humans co-operating, such as Athena's HeelFaceTurn and the rebel Cylon faction seeking Galactica's help against Brother Cavil. However the "enemy of my enemy is my friend" quote is actually used by President Roslin when she teams up with terrorist-turned-radical politician Tom Zarek, after Commander Adama tries to force her resignation.
* ''Series/BreakingBad'': Hector Salamanca hates Walter White and would like nothing more than to kill him. However, Walter knows that Hector hates his mutual enemy, Gustavo 'Gus' Fring, even more and gives him a chance for revenge. Through an impressive BatmanGambit, they lure Gus Fring, who has his own vendetta against Hector, to Hector's nursing home. [[spoiler:Hector proceeds to ding his bell one last time to detonate a bomb Walter planted on his wheelchair to take both himself and Gus Fring out.]]
** Later as of 'Rabid Dog' [[spoiler: Hank and Jesse, who have had a tremulous relationship at best, team up to take down Walt.]]
* ''Series/BuffyTheVampireSlayer'':
** Buffy teamed up with Spike to stop Angelus at the end of season 2. With some unusual fallout; because the main time she'd met him had been during this Enemy Mine situation, when Spike returned in season 3, Joyce thought that they were actually allies and let him in. In season four he also teamed up with them a few times for various reasons (once because Giles just paid him to), and by the fifth he ran out of a need for outside excuses and [[HeelFaceTurn turned into a straight ally]].
** Season 8 had Dracula team up with the Scoobies, who he hates (except Xander), for vengeance as the villains (Japanese vampires and a witch) had taken his power. [[RacistGrandma Also, because he was kind of a racist]].
** In "Prophecy Girl", Xander enlists his hated enemy's (Angel) help to storm the Master's lair, and save Buffy. Angel scoffs at that, so Xander shoves a cross in his face for extra convincing.
** A very brief one occurs in Season 3's "Choices," when the Mayor and Faith, in the interest of mutual survival, team up with the Scooby Gang in the high school cafeteria when demon spiders escape from the Box of Gavrok.
** They tease this with The Master and Buffy in Season 8, but it never actually happens, unless you count him trying to sneak attack Twilight while he and Buffy are fighting.
** The General very reluctantly works with the Slayers to fight the invading demon armies.
* ''Series/{{Castle}}'': In the season 5 finale, Beckett uncovers a murder she initially believes was the work of Senator Bracken, the man who hired a hitman to kill her mother. She then uncovers that it was actually the work of a hitman setting up to ''snipe'' Bracken in two days, and is now forced to work with him on the investigation of an attempted murder of a man she would like nothing less than to kill herself. The irony is not lost on her.
* ''Series/{{Charmed}}'': This happens several times when the Halliwell sisters must reluctantly team up with demons for various reasons that are in the best interests of both sides, such as preventing the existence of magic from being revealed to the mostly unaware human population or stopping a neutral third party whose plan, if successful, would result in the vast majority of combatants on both sides being exterminated.
** A strange case of this happens in Season 6's two-part season finale where that season's BigBad, corrupt Elder Gideon, teams up with his evil MirrorUniverse counterpart to trap two of the sisters in the MirrorUniverse where they team up with that universe's version of their most notorious recurring enemy, the demon Barbas (since demons are the good guys in that universe) before fighting and then teaming up with their own evil counterparts in order to return to their own universe. Unfortunately, that causes the two universes to become unbalanced resulting in the normal universe becoming too good and the mirror universe becoming too evil, which forces the sisters to once again team up with their evil counterparts to restore the balance between both universes by killing both versions of Gideon, who have each meanwhile teamed up with their own universe's version of Barbas. In short, the entire episode is a confusing mess of various EnemyMine scenarios.
* ''Series/{{Community}}'' has a really bizarre example in the episode "G.I. Jeff". Jeff falls into a coma and dreams he's a member of GIJoe. After a series of mishaps, he finds himself on the run from the unit with the other study group members (also imagined as G.I. Joe members). Eventually, he causes so much trouble, G.I. Joe and Cobra have to join forces to capture him.
* ''Series/DoctorWho'':
** Every story in Season 8 is about the Master coming up with some plan to destroy the world, someone (usually the Doctor) pointing out that performing this plan would end up screwing over the Master too somehow, and the Master teaming up with the Doctor to undo the damage.
** The serial [[Recap/DoctorWhoS18E7Logopolis "Logopolis"]]. Of course, the Master turns on the Doctor, tries to destroy the Universe rather than being unable to rule it, and then kills the Doctor by shaking him off a radio telescope into a parking lot. [[TheNthDoctor It isn't the end though, as the moment has been prepared for]]. Considering how the Master is just about the closest thing the Doctor has to a rival, they've certainly been forced to team up on any number of occasions throughout their history -- usually to stop a catastrophic evil that the Master himself unleashed, and invariably with the Master turning on the Doctor shortly before or after the problem is solved. Of course, the Doctor has been anticipating betrayal all along, and has almost certainly done something clever to come out ahead regardless.
** Happens in the conclusion of "Trial of a Time Lord", when the Master reveals that the prosecutor, the Valeyard, is actually the Doctor's EnemyWithout, whom will get the Doctor's remaining regenerations if he gets the Doctor executed. The Master helps the Doctor for two reasons: to have an enemy with which he's more familiar (the Doctor vs. the Valeyard) and to retain the chance to end the Doctor's existence personally.
** In [[Recap/DoctorWhoS28E13Doomsday "Doomsday"]], the presence of just four Daleks bumps an entire army of Cybermen down from "enemy" to "temporary ally". Once the Daleks start moving, Torchwood and the Cybermen appear to ignore each other in favour of the new targets.
** Happens again in [[Recap/DoctorWhoS30E17E18TheEndOfTime "The End of Time"]], where [[spoiler:the Master saved the Doctor from being disintegrated by Rassilon. It should be noted that [[ThirdActStupidity Rassilon brought the alliance, and thus his defeat, upon himself.]]]]
** And again in [[spoiler:[[Recap/DoctorWhoS35E1TheMagiciansApprentice The Magician's Apprentice]] The Doctor goes missing and Davros turns up.]]
** Differently, in [[Recap/DoctorWhoS31E12ThePandoricaOpens "The Pandorica Opens"]], [[spoiler:[[SpacePolice Judoon,]] [[ScaryDogmaticAliens Daleks,]] [[ProudWarriorRaceGuy Sontarans,]] [[CyberneticsEatYourSoul Cybermen,]] [[LizardFolk Silurians]], [[CombatByChampion Sycorax]], [[MayContainEvil Autons]] [[ContinuityPorn and a whole load of other races]] show up to [[SealedGoodInACan imprison the Doctor]] in an attempt to [[WellIntentionedExtremist stop the non-existence of the Universe.]]]]
** [[Recap/DoctorWhoS13E6TheSeedsOfDoom "The Seeds of Doom"]] features a plant maniac who employs a number of hired guns. They spend the first four episodes of the serial [[WhyDontYaJustShootHim chasing, capturing, and recapturing]] the Doctor and Sarah Jane, only to ally with them when the [[AlienKudzu Krynoid]] [[BodyHorror that used to be]] [[MinionWithAnFInEvil Keeler]] starts to get really huge, dangerous, and indiscriminately hungry for organic matter.
** In [[Recap/DoctorWhoS32E7AGoodManGoesToWar "A Good Man Goes to War"]], [[spoiler:the Doctor calls upon the aid of the Silurians, Judoon and a lone dishonored Sontaran alongside actual friends to rescue Amy. However, the Silurians and Sontaran's reasons for teaming up isn't so much the presence of a common enemy as it is the fact that they owe the Doctor a debt.]]
** In [[Recap/DoctorWhoS12E4GenesisOfTheDaleks "Genesis of the Daleks"]] when the Doctor has the chance to destroy the Daleks at their creation, one of the reasons he gives against this is that otherwise hostile races would be forced into alliances due to this.
** Comes close to happening in [[Recap/DoctorWho2013CSTheTimeOfTheDoctor "The Time of the Doctor"]], where, like in "The Pandorica Opens", various races gather round the planet Trenzalore to restart the Time War if the Time Lords return. However much of this war is unseen and slightly subverted in that everybody is reluctant to start the war. It finally becomes EnemyMine when on the other side, the Doctor and the Papal Mainframe, including the Silents, fight together.
** Apparently what happened after [[Recap/DoctorWhoS10E3FrontierInSpace "Frontier in Space"]], where the Master and Daleks tried to cause a war between Earth and Draconia after which they would [[WarForFunAndProfit invade the Galaxy]]. The humans and Draconians are told by the Doctor to form an alliance against the Daleks.
* ''Series/{{Farscape}}'':
** Played straight in the "Liars, Guns, and Money" trilogy when Moya's crew recruit various aliens who had tried to kill them in the past to help them pull off a heist.
** Played straight and subverted with John and Scorpius multiple times as John pretends to team up with Scorpius, then John is forced to team up with Scorpius to save Aeryn (twice!), then it looks like Scorpius has betrayed them but he really hasn't, then John betrays Scorpius only to have to go back and save him again. And then they end up teaming up with Scorpius again for the miniseries, still against John's better judgment.
* ''Series/{{Firefly}}'': Does this in the episode "Trash", where the crew joins up on a heist with Saffron, the psychotic seductress who tried to steal their ship a few episodes back. Rather amusingly subverted: [[spoiler: Saffron unsurprisingly double-crosses the crew, and the crew turns on her in return, having fully expected her sudden but inevitable betrayal]].
* ''Series/GameOfThrones'': This is the reason the Wildlings are all united under a single leader. Every tribe hates each others' guts: they just hate the idea of dying in droves to [[BiggerBad the White Walkers]] more.
* ''Series/GetSmart'': In one episode, Max Smart from [[GovernmentAgencyOfFiction CONTROL]] and Siegfried from [[NebulousEvilOrganisation KAOS]] team up against a man conspiring to destroy the world, since if he succeeded they would have nothing to fight about and would be out of a job.
* Nick and Renard's relationship in ''Series/{{Grimm}}'' is like that. In other circumstances they'll be enemies, and Renard even was a villain-like character at first. They became allies because they have a common enemy; The Royal Families.
* ''Series/{{Heroes}}'': This is the favorite way they deals with Sylar.
** Volume 3 had Noah Bennet work with ''Sylar'' to stop the escaped Level 5 villains. The two barely tolerated each other but seem to have ''bonded'' by the end of the 3rd episode. Then Sylar starts up with the brain-stealing again, causing Bennet to vow to kill him eventually.
*** What Noah meant could very likely refer to [[spoiler: ''taming'' Sylar. In Season 3, Episode 4, "I am Become Death", Peter is taken to a future timeline by his future self. In this timeline, Peter discovers a calm and collected Sylar, living in the Bennet household with a son named ''Noah''.]]
** Also, in the Volume 3 finale, Bennet frees all the Level 5 supervillains so they can help fight [[spoiler: Sylar, who's on the downswing of his HeelFaceRevolvingDoor trend]]. They all last maybe 3 minutes, tops.
** Volume 5 does this ''again'' when Peter realizes that in order to prevent Samuel Sullivan's plans from coming into fruition, he's going to need Sylar's help. Unfortunately, it meant getting himself stuck inside Sylar's head and dealing with the latter's VillainousBSOD. [[spoiler: Unlike the many times before, though, it works; the two save the day, and Sylar's HeelFaceTurn seems to stick this time.]]
* ''Series/HouseOfCardsUS'': In Season 3, the Republican and Democrat congressional leadership team up to oppose President Underwood's America Works program. It backfires against the Democrats when, after America Works goes bankrupt after they cut off the money, Underwood uses it as justification to renege on his promise to not seek a term of his own in the White House.
* ''Series/KamenRiderDecade'': In the final arc, the separate ''Franchise/KamenRider'' worlds are pitted against each other in a giant war, with the losers being erased from existence, so naturally Riders and Kaijin put aside their differences in order to protect their universes. Tsukasa, in the meantime, tries to convince everyone to focus on the common enemy in [[LegionOfDoom Daishocker]]; it works almost too late, but then the death of [[Series/KamenRiderX Apollo Geist]] actually accelerates the destruction rather than stopping it. [[NiceJobBreakingItHero Dammit]].
* ''Series/LawAndOrderCriminalIntent'': Detective Goren's [[WorthyOpponent arch-nemesis]] Nicole Wallace supplies him with information allowing him to [[spoiler: prevent her fiancé from killing his own daughter, who Nicole loved as her own.]] Ironic, considering [[spoiler: Nicole killed her real daughter]].
* ''Series/{{Leverage}}'': Has Nate teaming up with [[EvilCounterpart Sterling]] for "The Zanzibar Marketplace Job".
** Also in "The Last Dam Job", the team brings in a few people who have been enemies in the past. Eliot and Quinn, in particular, have a perfectly amicable working relationship despite the fact that they tried to beat one another to death in the Season 1 finale.
* ''Series/{{Lost}}'': Has done several times, both in regards to the survivors and the Others.
** In Season 3, when [[ChainedHeat Kate and Juliet are handcuffed together]] and forced to work together to escape the smoke monster's repeated attacks. It turns out Juliet herself handcuffed them together to try and gain Kate's trust.
** Throughout the second half of Season 4, Ben joins forces with Locke's group to fight the freighter mercenaries.
** At the end of Season 4, Kate and Sayid team up with Richard and his [[RedshirtArmy army of Others]] to rescue Ben from the mercenaries.
** Then there is the reluctant team-up between Losties and the Others of 1977 in the Season 5 finale.
** Finally, Season 6 had everyone teaming up against the new BigBad. Ben Linus and Charles Widmore sure were surprised to find themselves working toward a common goal!
* ''Series/TheManFromUNCLE'': Had this trope as part of its central premise, as THRUSH forces the Western nations and their ideological opponents the Soviet Union to cooperate in forming UNCLE.
* ''Series/{{MASH}}'': Charles Winchester, ordinarily a foil to Hawkeye and B.J., will occasionally join forces with one of them against the other (usually as part of an EscalatingWar), or with both of them against a common target. The latter moments tend to highlight Winchester's JerkWithAHeartOfGold qualities, given that the people he targets are always bullies themselves, such as a racist colonel, or a man bigoted against stutterers, or the insanely jingoistic Colonel Flagg.
** Flagg's mistake was trying to blackmail Charles into helping him with a threat of prison. Charles doesn't like being manipulated in that way, and knows precisely how to deal with it (he tricks Flagg into trying to arrest Colonel Potter, and the Mayor and police chief of Ouijonbou, all three of whom have the right contact to get rid of Flagg for good now that they have something solid against him).
** One good example is the episode where Hot Lips is being accused of being a communist by a congressional aide. Without even being asked, Winchester takes a stand against the aide and takes up for Margaret.
** Due to a misunderstanding and accident of timing, the Colonel who sent Charles to the 4077th attacks Margaret (thinking she's the woman Charles procured for his entertainment). The Colonel offers to transfer Charles back to Tokyo, and all he has to do is lie about what happened with Margaret. Charles is clearly tormented by the decision, but chooses to tell the truth as he cannot stand to destroy Margaret's career for his own (relatively modest) gain.
* ''Series/{{Merlin1998}}'': Merlin himself outright states that this is his motivation for allying himself to Uther. Uther's enemy, Vortigern, is Merlin's enemy and has joined forces with an even worse enemy.
* ''Series/NaturallySadie'': While not as big of enemies as most of the other examples, this show uses this a lot to get characters who dislike one of the main cast to work alongside them, usually for a school project. One memorable incident has almost the entire teenage cast working together in detention while the remaining member teams up with [[EveryoneCallsHimBarkeep Mallcop]] -- two examples in one episode, there are many more.
* ''Series/TheNewAdventuresOfRobinHood'': In "Attack of the Vikings", Robin must rescue both himself and his archenemy when he and Prince John are kidnapped by Vikings.
* ''Series/{{Nikita}}'':
** {{Defied}} when Division's rival Gogol tries to enlist Nikita to help them recover a dirty bomb.
-->'''Ari Tasarov:''' The enemy of my enemy--\\
'''Nikita:''' --is just another man standing in my way.
** Played straight later when Gogol, Division, ''and'' Nikita collaborate to get Alex out of danger after she confronts Sergei Semak, the uncle who had her father killed so he could take over the family business.
* ''Series/OnceUponATime'': In the Season 1 finale, Emma and Regina briefly team up [[spoiler: in order to save Henry's life]].
** Regina later teams up with Mr. Gold in Season 2, [[spoiler: in order to stop Regina's mother, Cora, from getting into the real world]].
** Season 2 ends with a massive one between Regina, Emma, Snow, Charming, Gold, and Hook to save [[spoiler: Henry (again) after he gets kidnapped to Neverland]]. The team-up has...varying levels of success.
** In Season 4, ArcVillain Maleficent eventually decides to form one in the final three episodes with Emma and company, striking a deal for Emma to find Mal's daughter, Lily.
* ''Series/{{Oz}}'': Happens all the time in this prison drama as the various factions struggle for control of the drug trade, or seek to murder a rival.
* ''Series/PersonOfInterest'': In her war against [[DirtyCop HR]], Joss Carter first allies herself with crime boss Carl Elias and then has him form a temporary alliance with the rival Russian syndicate.
** At one point, Reese and Shaw team up with [[WellIntentionedExtremist Hersch]] in order to take down Vigilance, since they need to find Finch and he needs to find Control, and Vigilance has both of them.
** Early season three Team Machine also teamed up with [[TheCracker Root]] a few times, before she had actually graduated into TokenEvilTeammate. The most notable example of this was when Finch, Fusco, and Shaw were running out of time to save a [[RoaringRampageOfRevenge rampaging]] Reese, and they decided that [[GodzillaThreshold Root was the only way to get to him]].
* ''Franchise/PowerRangers'': Certain incarnations have done this, particularly ''Series/PowerRangersZeo''. The BigBad of the moment has brainwashed TheHero and the SixthRanger's attempt to save him has failed. It turns out that last year's villains have the technology to send the rest of the team over. They do, just to screw around with the new villains.
** Likewise, a villain variant of this was completely subverted in ''Turbo: A Power Rangers Movie.'' Newly anointed BigBad Divatox calls [[DiminishingVillainThreat decayed villain]] Rita Repulsa for help, and gets laughed at. Rita's CaptainObvious response is that if she knew how to defeat the Rangers, she would have done it already.
** On the ''Franchise/SuperSentai'' side, [[Series/KaizokuSentaiGokaiger Basco ta Jolokia]] is a rare case given his [[Main/ChronicBackstabbingDisorder track record.]] [[spoiler:Zangyack would have right out won against the team in #43 if Basco had not suddenly turned against Zangyack. He even gives Marvelous back his [[Main/TransformationTrinket Mobirates and Ranger Key.]] Of course, he has his [[Main/ItsAllAboutMe own]] [[Main/GottaCatchThemAll reasons.]]]]
* ''Series/{{Revolution}}'': As of episode 14, the Resistance and the Georgia Federation have allied to open a two front war against Monroe.
** In season 2, the heroes end up allying with pretty much all their surviving enemies since they need to top the Patriots before they take over most of the old United States and enact their genocidal policies.
* ''Series/RobinHood'': In the first season of the BBC's show Robin and the sheriff temporarily fight side-by-side in order to defeat a group of Saladin's assassins. In the third season Robin and Guy team up in order to [[spoiler: save their half-brother Archer from execution.]]
* ''Series/SaturdayNightLive'': No matter how much Sean Connery would try to antagonize Alex Trebek during the Celebrity Jeopardy skits, the two of them would often commiserate over another contestant's idiocy--note the skit where they both snark on Anne Heche's nutty behavior.
* ''Series/{{Scrubs}}'': Even features this trope when Dr. Cox and Dr. Kelso team up to break the spirit of an overly cheery coworker. However, she outsmarts them and they are back to mutual hate by the end of the episode.
** Another episode featuring Dr. Kelso has him realizing one of the reasons the hospital keeps going is that everybody is united against ''him''. In the future he'll purposefully invoke it to keep the staff going in moments of stress or instability.
* ''Series/{{Smallville}}'': In the episode "Asylum" [[Characters/SmallvilleMeteorFreaks Ian Randall and Eric Summers]] ask for the help of [[TheHunter Van McNulty]] because he knows Clark's weakness.
** There are also various times in season nine where the good guys have teamed up with [[CorruptCorporateExecutive Tess]] [[WellIntentionedExtremist Mercer]]. Chloe in particular joined forces with Tess in episodes like "Upgrade" and "Sacrifice" so that they can both protect their secrets. (Tess's season ten HeelFaceTurn takes the 'enemy' out of the equation, so all post-S9 teamups aren't this trope.)
* ''Series/StargateAtlantis'': Sheppard and a wraith cooperated to escape custody of Kolya in the episode "Common Ground". This included the wraith feeding on Sheppard to have the strength to fight off their enemies, giving it the opportunity to double-cross our hero. However, he returned all the LifeEnergy he took (and possibly made up for a few months Sheppard spent in a time-dilation field) and Sheppard made good on his promise to let it go free. The wraith in question, later dubbed "Todd", would become a recurring character, and is notable for being unusually sociable for a Wraith, even ''joking'' with the heroes.
** Taken UpToEleven in the final battle against the Asurans, where the Earth, Traveller, and Wraith ships fight side by side against the Asuran warships in what is hands down the single most awesome space battle any of the three series has managed (''Series/StargateUniverse'', being set on a CoolStarship, had a chance to top it before it was cancelled). This is even more impressive given the distinctly quarrelsome nature of the Wraith, thus the battle is a meld of nine factions (7 Hives, Atlantis and the Travellers) rather than 3 as some may think.
** After he escaped the first time, Michael teamed up with the Atlantis team to bring down his former hive after his queen snubbed him. This didn't work out well for either side.
* ''Series/StargateSG1'': Features this a great many times. It seems to be one of the favorite negotiating tactics of the Tau'ri in particular.
** Ba'al has had to join forces with SG-1 to defeat his master Anubis and the greater threat of the Replicators during the "Reckoning" two-parter. This is not the last time they'd work with him. Initially subverted, as Ba'al asked SG-1 for an alliance and was flat-out rejected by Jack O'Neill.
-->'''O'Neill:''' I've got a better idea, instead of helping you, why don't we sit around and watch you get your ass kicked? That way you'll be dead, and we'll be glad.
** Special mention just ''has'' to go to the two-parter "The Quest", where SG-1, Ba'al, ''and'' [[DarkMessiah Ori messiah Adria]] team up to solve Morgan le Fay's puzzles.
** There is also an ''SG-1'' episode entitled "Enemy Mine", though it is unrelated to this trope at first. The conclusion is somewhat an example of this trope, as the Colonel overseeing the mine and the Unas definitely considered each other enemies until the compromise where they agreed to work the mine themselves so long as it contributed to killing some Goa'uld. Plus they look a little ''Enemy Mine'' Lou Gossetty, what with the scaly skin and labored manner of speaking.
** The original alliance (the one led by Ra) against Anubis, whose crimes were apparently considered unspeakable, even amongst the System Lords. [[EvenEvilHasStandards Think about that]].
*** Sokar was banished from the System Lords for much the same reason, and by much the same method.
*** According to Thor in "Fair Game", it is precisely because of the concept of "enemy of my enemy" that the Goa'uld System Lords banded together in the first place. Due to their AlwaysChaoticEvil nature, however, it takes a serious threat (like the Tau'ri) to convince them to work together for any extended length of time.
** The "Giant Aliens" (later named Omeyocans by the novel ''City of the Gods'') in the episode "Crystal Skull" quote the full line verbatim to SG-1. In Mayan, no less. [[WhatHappenedToTheMouse And then they're never heard from again.]]
** Then there's the various times the SGC temporarily allied with Lord Yu. To paraphrase Daniel Jackson, Yu is not to be liked or trusted, only trusted to make a [[PragmaticVillainy practical decision]] unhampered by the [[StupidEvil usual Goa'uld mindset]].
* ''Franchise/StarTrek'': In general this franchise is ''all'' over this trope. The Klingons team up with the ''Enterprise'' crew in "Day of the Dove", the Klingons allying with the Romulans against the Federation and then later with the Federation against the Romulans, ''Voyager'' teaming with the Borg in "Scorpion", TheAlliance of the Alpha Quadrant (and the poor, forgotten Beta Quadrant!) against the Dominion, etc., etc.
* ''Series/StarTrekDeepSpaceNine'': Kira, Damar and Garak loathe each other. The fact that Damar killed Garak's LoveInterest and Kira's surrogate daughter a few seasons back [[{{Understatement}} does not help]]. Eventually, the fate of Cardassia, and with it the entire Alpha Quadrant, rests on the three of them putting aside their differences and working together to create a rebellion to overthrow the Dominion control of Cardassia. It even leads to the beginning of FireForgedFriends.
* ''Series/StarTrekEnterprise'': "Dawn," "Storm Front" (Archer fighting alongside Silik)
** The Andorians and Vulcans learning to work together have ''some'' shades of this trope (though the fact that one of the enemies faced together is extremist elements in the Vulcan governments complicates matters), especially during the last season (the Romulans' meddling intended to break the Coalition ends up strengthening it by giving them a common foe: the Romulans. Oops).
* ''Series/StarTrekTheNextGeneration'': "Darmok". In the midst of the plot, Picard retells similar parts of ''Literature/TheEpicOfGilgamesh'', highlighting this as OlderThanDirt.
** Rather famously, the [[http://memory-alpha.org/en/wiki/Tamarian_language Tamarian]] for this trope is "Darmok and Jalad at Tanagra."
** ''TNG'' also did it in "The Enemy", where Geordi and a Romulan had to work together.
* ''Series/StarTrekVoyager'': This is the plot, although by the third season the rival crew factions have been forgotten.
** In a later season of ''Voyager'', in the episode where the Delta Flyer is introduced, B'Elanna Torres learns that the Maquis lost back home. She turns depressed and does dangerous things in the Holodeck with the safety off, and because most of the ship has all but forgotten their initial division between Starfleet and Maquis, they don't know what's wrong with her.
** When they first re-establish contact with Starfleet, Janeway mentions to Chakotay that she actually ''had'' forgotten the implications of the mixed crew after they had been working together for so long. She becomes concerned for what happens when they got home, since as far as Starfleet are concerned, the former Maquis crew are ''still'' wanted terrorists?!
** Janeway's [[spoiler: alliance with the Borg in Delta Quadrant against Species 8472 (where the crew picks up 7 of 9).]]
* ''Series/{{Supernatural}}'': In season 5, Sam, Dean, and the others join forces with the demon Crowley in an attempt to defeat Lucifer.
** An odd example when [[spoiler:Gabriel]] joins forces with the Winchesters and goes up against Lucifer, [[spoiler:resulting in his death]], since he spent most of the time he knew them tormenting them. [[spoiler:Although it's implied that he knew that they'd eventually do, which is why he gave them such a hard time.]]
** And later join forces with [[spoiler:Meg]] to defeat [[spoiler:Crowley.]]
*** Which is an interesting use of this trope, seeing as [[spoiler: Meg was a [[SycophanticServant staunch]] Lucifer loyalist whom the boys had fought against in the ''same episode'' they first allied with Crowley.]]
** In season 7, the Winchesters are aided by several old enemies (Meg, Crowley, and the [[MonsterProgenitor Alpha vampire]]) at different points and for various reasons in order to defeat the [[EldritchAbomination Leviathans]]. [[spoiler: Of the three, Crowley is the one who double-crosses them when things are over and done with.]]
** [[spoiler: When Dean was trapped in Purgatory for a year between seasons 7 and 8, he teamed up with a vampire named Benny in order to escape.]]
* ''Series/TeenWolf'': Scott, Allison, Chris, and Kate versus Alpha Peter Hale in the season one finale.
** And then not-so-Alpha Peter with Derek versus Gerard and Kanima Jackson in season two.
* ''Series/TerraNova'': The episode "Now You See Me". Taylor and Mira's "Your place or mine" hostage struggle is interrupted by a pair of young and territorial Slashers. Leading to Taylor to hand a knife to Mira and say “We can fight each other, or we can fight them.”
* ''Time Gentleman Please'': PlayedForLaughs. The Pub Landlord ''loathes'' the French, due to his wife running away with a Frenchman and taking his beloved son away from him. In one episode, the Frenchman walks into his pub, causing him to immediately begin a tirade, before the Frenchman cuts him off and reveals that she's left ''him''... for a ''German''.
--> '''Pub Landlord''': *''Shakes hand''* The ''[[WorldWarTwo mutual]]'' enemy, all hostilities are now ceased!
* ''Series/{{The Vampire Diaries}}'': Damon will take a break from harassing Stefan if there's a bigger threat, or if it's in his interest.
** If the promo for "Before Sunset" is any indication the brothers will work with Klaus to stop Alaric.
* ''Series/TheWire'': Shotgun-toting BadassLongcoat stick-up boy Omar Little and Harper's Magazine-reading Uber-BadassBookworm assassin Brother Mouzone team up to take on Stringer Bell after a failed LetsYouAndHimFight. ''And it is awesome''.
* In the episode ''A Necessary Evil'' of ''Series/XenaWarriorPrincess'', Xena enlists the aid of her enemy Callisto to fight Velasca, an Amazon who acquired [[AGodAmI the powers of a goddess]]. At that point, Callisto had recently become immortal and was the only person available to go up against her, despite Gabrielle's protestations.
* ''Series/TheXFiles'': The episode "En Ami". And "Tunguska"/"Terma" as well, although that turned out to be a set-up.
* In an episode of ''Series/TheFlash2014'', the titular hero is forced to temporarily team up with Leonard Snart (AKA Captain Cold) and his sister Lisa (AKA Golden Glider) in order to help transport a bunch of dangerous meta-humans from S.T.A.R. Labs to [[Series/{{Arrow}} Lian Yu]]. Naturally, Snart betrays Barry and releases the meta-humans (except for one, whom he kills for ostensibly owing him money), figuring they now owe him one. At the end of the episode, Barry admits he probably shouldn't have trusted a known felon.
* The premise of the upcoming show ''Series/LegendsOfTomorrow'' is that a team up of the some of the heroes and villains of the ''Series/{{Arrow}}'' and ''Series/TheFlash2014'' franchise is necessary to stop an immortal villain, as claimed by the time-traveling Rip Hunter. Leonard Snart even points out that he can't imagine a future where he's considered a hero (he would probably consider it an insult). Hunter points out that they're not heroes, they're ''legends''.
[[/folder]]

[[folder:Newspaper Comics]]
* The Fox siblings of ''ComicStrip/FoxTrot'' have teamed up on each other in every possible combination (Peter and Paige vs. Jason, Peter and Jason vs. Paige, Paige and Jason vs. Peter).
* A hilarious example occurs in ''ComicStrip/{{Peanuts}}'', when Lucy arrives one day to find that Frieda was in her claimed territory (lounging in front of Schroder's couch). Dejected, she and Snoopy (who also enjoyed lying there and listening to piano music), commiserate on a curb... until Snoopy comes up with the idea of [[spoiler: Lucy doing Snoopy's own famous aerial attack on Frieda]]. One swirling girl-fight later, a slightly battered (yet victorious) Lucy is shaking Snoopy's paw in thanks.
[[/folder]]

[[folder:Professional Wrestling]]
* Since most wrestlers [[{{Kayfabe}} theoretically]] have little say on who they either fight or team with, an EnemyMine often occurs when an on-screen authority figure randomly decides two people who don't like each other will team up against a common enemy. This used to happen all the time with Wrestling/StoneColdSteveAustin and [[Wrestling/DwayneJohnson The Rock]]. An example would be when Stone Cold was booked to fight Wrestling/TheUndertaker and Rock against Wrestling/TripleH at ''Over the Edge 1999,'' one ''Raw'' saw Austin and Rock being forced to team together against Undertaker and Wrestling/TripleH. Since Undertaker and Wrestling/TripleH were members of the same stable, the story of the match was whether Austin and Rock (who only weeks earlier were in a bitter feud) could put up with each other long enough to survive.
** This specific Enemy Mine would occur several times through 1999, not all of them being in official matches. For example: the ''[[Wrestling/WWESmackDown SmackDown]]'' pilot in which the [[Wrestling/TheCorporation Corporate]] [[Wrestling/MinistryOfDarkness Ministry]] came together in the first place.
*** Stone Cold and The Rock would continue to find themselves unwilling partners as late as 2002, when they teamed up the week before ''Wrestling/{{WrestleMania}} X8'' to face the Wrestling/NewWorldOrder in a handicap match. By that point you could argue that Austin was Rocky's most frequent tag team partner behind Wrestling/MickFoley.
* Pro Wrestling tag-team title belts can also serve from an Enemy Mine, as a {{face}} and a {{heel}} are thrust into a match with the titles on the line, and despite their bickering and contempt for each other, manage to win. They're then obligated to continue teaming to defend the belts, arguing and taking potshots at each other all the while, until one of them finally decides being a champion isn't worth the headache and turns on the other. A 2007 example is Wrestling/MattHardy and Wrestling/MontelVontaviousPorter on ''[[Wrestling/{{WWESmackDown}} WWE SmackDown!]]''.
** Slightly {{subverted|Trope}} in 2008 with Wrestling/JohnCena and Wrestling/{{Batista}}, who won the tag titles but were bitter enemies facing each other, and couldn't co-exist, and lost the tag titles back on their first defense the next week.
*** Even more so with Cena and Wrestling/TheMiz who couldn't co-exist as tag team champions ''for ten minutes'' before Miz betrayed Cena.
*** As an interesting side note, all four of John Cena's tag title reigns in WWE have been with enemies or rivals, and each one was shorter than the last as a result. His first World Tag Team Championship reign with Wrestling/ShawnMichaels came during the lead-up to their Wrestlemania match and ended the night after that event, bringing their total reign to 63 days. His second World Tag Team Championship reign was the aforementioned reign with Batista, which lasted seven days. He later won the WWE Tag Team Championship with Wrestling/DavidOtunga as an unwilling member of The Nexus, losing the title the very next day. His final WWE Tag Team Championship reign was the one with The Miz mentioned above, lasting about ten minutes.
** Hilariously {{lampshade|Hanging}}d in a backstage segment with Team Triple H at ''Wrestling/SurvivorSeries 2007''. Wrestling/{{Kane}}, Wrestling/JeffHardy, and Wrestling/{{Rey Mysterio|Jr}} call out Wrestling/TripleH on his numerous past offenses against them, which [[RedBaron "the Game"]] sheepishly apologizes for. However, the team acknowledges that while they don't necessarily like one another, they like the other team ''even less''.
* Wrestling/{{CMLL}}'s Torneo Increibles de Parejas, Arena Puebla and Torneo Nacional de Parejas Increibles all require all teams who wish to enter them to be composed of technico and rudo.
* The Wrestling/AmericanWrestlingAssociation had an angle in 1985 where the Russian faction of Boris Zhukov and Chris Markoff injured Wrestling/RickMartel. Martel's friend Mad Dog Vachon came looking for revenge and turned to the only man he felt was dirty and ruthless enough to stop the Russians: his old enemy Nick Bockwinkel.
* Wrestling/{{WCW}} had the Lethal Lottery, a competition made up of tag teams who didn't like each other, the winners getting to advance to the Battlebowl battle royal where they could beat each other up with impunity, giving them ''some'' incentive to win.
* ''Wrestling/SurvivorSeries 1995'' featured a Wild Card match with the team of Ahmed Johnson, Wrestling/ShawnMichaels, Wrestling/DaveyBoySmith, and Sid against [[Wrestling/ScottHall Razor Ramon]], [[Wrestling/ShaneDouglas Dean Douglas]], Wrestling/OwenHart, and Wrestling/{{Yokozuna}}. The faces and heels did not get along, causing the elimination of their teammates.
* In a interesting twist, ''The Rise and Fall of Wrestling/{{ECW}}'' showed that [[Wrestling/{{Tazz}} the Tazmaniac]] and Wrestling/{{Sabu}} hated each other in real life, but ended up becoming one of the company's top tag teams prior to Sabu bailing on the company before ''The Three Way Dance'' on April 8, 1995.
** Wrestling/TommyDreamer and Wrestling/{{Raven}} became a tag team for a while.
* During the first Los Independientes attack on CMLL in April 2010, CMLL regulars Averno, El Texano Jr and El Terrible took the opportunity to blindside Brazo de Plata, Wrestling/{{Mistico}} and Jon Strongman when they ran out try and save La Sombra, El Hijo del Fantasma and La Máscara from the independent circuit invaders.
* In 2010, the rise of the PowerStable Wrestling/TheNexus on ''[[Wrestling/WWERaw Raw]]'' saw the [[RivalsTeamUp teaming up of former rivals]] like Wrestling/JohnCena, Wrestling/{{Edge}}, and Wrestling/ChrisJericho after each got ambushed by Wrestling/TheNexus.
** Subverted at ''Wrestling/{{SummerSlam}} 2010'', when usual Cena rival Wrestling/TheMiz tried to play on the "need" for this (especially after Cena honestly tried to keep them together, but Edge and Jericho proved incompatible) to make Cena beg him to round out the team... by the time Miz tried to pull the trigger, Cena declared that Miz had taken too long to make up his mind and that Cena had found someone else who said yes first: Cue the triumphant return of one [[Wrestling/BryanDanielson Daniel Bryan]].
* Wrestling/TeamHellNo is a great example, with Daniel Bryan and Kane being forced to enter anger management together, hug out their aggression in the middle of the ring, and become a tag team. They won the tag team titles completely on accident, and they both would spend most of their time bickering and arguing, which through sheer luck would lead them to win after win.
* Often happens in Wrestling/{{Royal Rumble}}s and Battle Royals, as many wrestlers team up to eliminate the biggest wrestlers.
** The December 12, 2007 ''[[Wrestling/{{WWERaw}} Raw]]'' featured a special "15th Anniversary battle royal," including such stars of the past as former [[http://www.wrestling-titles.com/wwe/wwe-h.html WWE Champions]] [[Wrestling/BobBacklund Mr. Bob Backlund]] and Wrestling/SgtSlaughter, former [[http://www.wrestling-titles.com/wwe/wwe-world-t.html WWE World Tag Team Champions]] [[Wrestling/MikeRotunda Irwin R. Schyster]], [[Wrestling/{{Demolition}} Repo Man]] and Wrestling/AlSnow, and..."Gillberg". He did his dramatic entrance, and ''everyone'' in the match united to promptly eliminate him first. This is a notable subversion of the above point, since as a former [[http://www.wrestling-titles.com/mexico/uwa/wwf-lh.html WWF World Light Heavyweight Champion]], Gillberg would have been one of the smallest guys in the match. Commentator [[Wrestling/JerryLawler Jerry "The King" Lawler]] even ''said,'' "Not Gillberg, he just got here."
* In the Mexican EAW, Wrestling/LondonAndKendrick teamed up with their long time rivals, Wrestling/TheWorldsGreatestTagTeam over Marco Corleone harassing Charlie Haas's wife Jackie and London and Kendrick's then third partner, Reby Sky. Corleone had backup from El Hijo de Rey Misterio and Zach Gowen so they needed the numbers to avoid more inter gender matches.
* Pretty much {{enforced|trope}} by Madison Eagles and Jessicka Havok on Wrestling/{{SHIMMER}} Volume 70, who were on separate [[RoaringRampageOfRevenge paths of revenge]] against Nicole Matthews and Portia Perez, met up, and took the Global Green Gangsters along with them.
* In January 2015 at the ''IWC Reloaded'' event, the first show under a new owner based around a randomizing "reset button" gimmick, Joe Rosa & Jimmy Vega$, members of rival {{power stable}}s Faces Of Change and Founding Fathers, as well as personal enemies, won the tag team titles and had to be threatened with suspension to agree to act civil afterwards. At the same event, John [=McChesney=] and Jimmy Nutts teamed up against Team Big League for interfering in their match, [=McChesney=] presumably being a former member of the group from then on.
* In the World Wrestling League, Savio Vega had been determined to see Heavyweight Champion Glamour Boy Shane fail, with President Richard Negrín sending out former champion Monster Pain to ensure Vega stopped messing with Shane. But Shane came to Vega's aid at the 2015 ''Guerra De Reyes'' event when Negrín [[YouHaveOutlivedYourUsefulness fired Vega]] and then formed "The Gentleman's Club" with Escobar, La Amenaza Bryan, Joe Bravo, Hiram Túa and freshly crowned Heavyweight Champion [[Wrestling/AlbertoDelRio El Patron Alberto]], who all beat Vega bloody.
* Enforced at ''WWN Live Mercury Rising 2015'', where Mia Yim and the Kimber Bombs were set to take on The Canadian Ninjas and Nikki Storm. Andrea of Valifornia ran out and beat Storm senseless while stable leader So Cal Val informed Portia and Nicole that Andrea had replaced Nikki.
[[/folder]]

[[folder:Radio]]
* In the ''Stanley Baxter's Playhouse'' episode "The Pool", a landowner arrests a poacher and then slips in the river and injures himself. The two of them, the poacher handcuffed and hogtied and the landowner unable to walk, must find a way of surviving on a Scottish riverbank in late winter. It turns out they have more of a history than that...
[[/folder]]

[[folder:Roleplay]]
* In ''Roleplay/TheGamersAlliance'', [[WellIntentionedExtremist Kagetsu I]] begins working with the Grand Alliance against Arawn Losstarot when the Alliance saves Kagetsu's wife Marya from Arawn's stronghold. Likewise a group of [[ReligionOfEvil clerics of Mardük]] and [[WorthyOpponent Samachi]] work with the Alliance against the [[TheLegionsOfHell Northern Horde]] during the battle of Vanna despite their animosity which stems all the way from the Great War.
* In ''Roleplay/SurvivalOfTheFittest'', Shameeca Mitchell and Heath Trennoby enlist the aid of AntiVillain Bobby Jacks in order to mount a rescue from [[JerkAss all around asshole]] Lenny Priestly. Admittedly Shameeca hadn't met Bobby before this point, but she was well aware that he was a killer.
* In Roleplay/DinoAttackRPG, several classical LEGO villains, most notably [[DastardlyWhiplash Sam Sinister]], [[ChaoticEvil The Brickster]], and [[TakeOverTheWorld Evil Ogel]] ended up joining the team to combat the threat of mutant dinosaurs.
* In Chapter One of Blog/OffThePageAndIntoLife, Gail and Terrence have hated one another since childhood, in no small part thanks to their mutual interest in Henry. However, when [[ManipulativeBitch Madame]] [[TheFaceless Blue]] begins spreading lies about them, they agree to work together to get rid of her. Gail even lampshades it, remarking that they're NotSoDifferent, and probably would've taken over the world by now if they didn't hate each other so much.
* ''Roleplay/STOForumVersusThreadRP'' somewhat encourages this. On the one hand, the encounters are somewhat easier with two or more players working together since they can cover for each other, but on the other hand only two characters can get off the planet in the end. Examples so far:
** Eleya and Kang join up early on in a swamp after she gets stuck in the mud and he rescues her. Averted in that the two of them actually seem to like each other.
** Played straight with the other two. Torpal initially tries to kill 007. 007 shoots him nonfatally in both legs and gives him the option to join up or face a CoupDeGrace. Torpal grudgingly agrees. [[spoiler:Breaks down almost immediately when they run into Jem'Hadar and try to use the other as bait. 007 comes out on top and Torpal dies.]]
* The one thing that will unite the Pro-Godmodder, Neutrals, and Anti-Godmodders in ''Roleplay/DestroyTheGodmodder'' is some giant boss that [[KillEmAll wants to kill everyone]].
[[/folder]]

[[folder:Tabletop Games]]
* ''TabletopGame/MagicTheGathering'' has a number of scenarios:
** Almost all cards in ''TabletopGame/MagicTheGathering'' are divided into one of five categories, defined by certain characteristics and assigned a colour. The five colours are seen on the back of the cards in a pentangle. The characters and creatures associated with any particular colour are hated by the colours on either of the nearer points, but even they will ally to fight against a colour further away (physically ''and'' thematically) from one of them.
** This forms a significant part of the dynamic for the good guys in the Archenemy variant (since they can easily be colors that either do or would hate each other slightly less than they hate the main opponent).
** The events of the ''Zendikar'' block have the vampires, elves, humans, Kor, minotaurs, goblins, merfolk and what-have-you uniting against the [[EldritchAbomination Eldrazi]]).
** In the ''Scars of Mirrodin block'', the Mirran forces in all five colors were forced to team up against Phyrexia... although the Black-aligned section was wiped out by the second set, and [[TheBadGuyWins Phyrexia won in the end]].
* ''TabletopGame/MageTheAwakening'' generally sees the Pentacle Orders locked in battle against the [[AncientConspiracy Seers of]] [[DespotismJustifiesTheMeans the Throne]], with [[KnightTemplar Banishers]] attacking both sides. However, when [[PowerBornOfMadness The Mad]], [[YourSoulIsMine Reaper Legacies]] or the [[EldritchAbomination Abyss]]-aligned [[OmnicidalManiac Scelesti]] show up, all three sides will most likely declare a truce to stop them.
** ''TabletopGame/MageTheAscension'' has pretty much the same dynamic, with the Traditions and the Technocracy setting aside their conflict long enough to take down a [[OmnicidalManiac Nephandus]] or [[PowerBornOfMadness Marauder]].
** ''TabletopGame/WerewolfTheForsaken'' does the same thing as well, with the Forsaken and the Pure reluctantly willing to put aside differences and put down Bale Hounds or the Idigam whenever they pop up. An entire Lodge, the Lodge of the Hunt, exists to invoke this trope, bringing together werewolves who have a common ArchEnemy.
* ''TabletopGame/{{Warhammer 40000}}'' very, ''very'' occasionally has instances where the more reasonable factions will hold off on killing each other to deal with a mutual threat. For a few minutes, anyway.
** This most common variant occurs between forces of the Imperium, Eldar, and Tau against Tyranids, Necrons, or Chaos, and matching temporary alliances may occur between Chaos, Orks, and Dark Eldar, as prominently seen during ''VideoGame/DawnOfWar: Winter Assault''.
** The Eldar, being [[ManipulativeBastard who they are]], will often manipulate any allies they do make so that they take the brunt of the fighting (and thus causalities), in essence back-stabbing their allies during the alliance, as well as overtly so 5 minutes before its usefulness ends. Their evil cousins, the Dark Eldar, pretty much always do the same.
** It wouldn't be too much to suggest that this is the standard Ork state of being. Individual Orks are naturally hostile to everything else, even each other, but they will form into tribes to fight other tribes, and no matter how much the Ork tribes fight each other, they'll nearly always join forces to fight non-Orks.
** ''VideoGame/DawnOfWar II'' has a new mode which exemplifies this, known as "The Last Stand", where a Space Marine Captain, an Ork Mekboy and an Eldar Farseer cooperate to HoldTheLine against a swarm of enemies. The ''Chaos Rising'' expansion throws the Chaos Sorcerer and the Tyranid Hive Tyrant into the mix of heroes in the play mode, which technically cements-- if it wasn't apparent with the widely opposing team we had before-- that the game mode is not to be taken as canon, especially when a loyalist Marine cooperates with a Chaos Marine in any way.
** Rules for the 6th Edition allow "allies"; if the player's army allows, they can take a HQ and a Troop choice (or more if they really want to) from another army. Specifically, the categories ''Desperate Allies'' and ''Unholy Alliance'' allow players to [[InvokedTrope invoke]] this trope if they want.
* In ''TabletopGame/{{Paranoia}}'', even if someone's ideology is directly opposed to yours (Psion vs. Anti-Mutant, Corpore Metal vs. Frankenstein Destroyers), alliances can always shift to suit the demands of the moment. You can always hose them later.
* Several years ago, Arcanacon in Australia featured a freeform called "''Film/MarsAttacks'' the ''TabletopGame/WorldOfDarkness''". The blurb for the game included:
--> Will the Camarilla fight alongside the Sabbat?
--> Will the Garou fight alongside the Wyrm?
--> Will the Traditions fight alongside the Technocracy?
--> Will the Seelie fight alongside the Unseelie?
--> ...and will the [[CloudCuckooLander Malkavians]] fight alongside the Martians?
* Just about all the Successor States in ''TabletopGame/{{BattleTech}}'' was quite happy to blow each other to kingdom come. And then the Clans came, and all of a sudden, [[ArchEnemy Arch Enemies]] were forming alliances to stop the threat. A few decades later, the [[ChurchMilitant Word of Blake]] started nuking everyone. So the Successor States ended up forming an alliance with ''the Clans'' to nuke the Blakists back.
* Heroes in ''TabletopGame/BeastThePrimordial'' will happily team up with every other race in the TabletopGame/NewWorldOfDarkness for the sake of hunting down and killing Beasts. This is intended to show just why they are {{Designated Hero}}es; they are so obsessive that they will gladly ally with actually evil monsters to kill a harmless Beast, simply because they are just that fixated on killing Beasts that they regard other races as harmless.
[[/folder]]

[[folder:Theater]]
* In ''Theatre/TheTamingOfTheShrew'', several men are rivals for the hand of the fair Bianca, but her father won't let any of them marry her unless her shrewish older sister, Katarina, is married off first. Realizing that there's no point in fighting each other if they don't have a chance, the suitors decide to work together to get Katarina a husband.
* In ''Reds and Blues'', the two families of feuding Liverpool and Everton supporters (and the audience, who are likely to be similarly split) briefly join together when a Manchester United fan shows up.
[[/folder]]

[[folder:Video Games]]
* ''VideoGame/DeusExHumanRevolution'' has an interesting one in the background. The matter of human augmentation is a topic that both liberals and conservatives can join in on. Liberals are against it because it widens the gap between the poor and the rich, whereas conservatives believe it is an affront to God to alter the human body.
* In ''[[{{VideoGame/Battlezone1998}} Battlezone]]'', the Americans and (remnants of) the Soviets team up to take down the Furies (alien spaceships brought back by the Soviets). In fact there is even a rescue mission before the team-up mission, in which you have to rescue the Soviet survivors (the Furies rebelled after taking down the Black Dogs (third faction and the one used to create the Furies in the first place)).
* In ''VideoGame/FinalFantasyX2'', the Leblanc Syndicate, who are enemies originally, become allies of the Gullwings in Chapter 3. This is different, however, in that they remain allies for the rest of the game, even helping in the fight against [[spoiler:Vegnagun]].
* In ''VideoGame/CityOfHeroes'', in the Valentine's Day 2006 and 2007 events, the missions to unlock special prizes required mixed hero-villain teams to complete. As well, the issue 10 update included a whole hero-villain co-op zone, the Rikti War Zone.
** Issue 12 added Cimerora, another co-op zone.
*** Finally, the annual "Rescue Baby New Year" event allows heroes and villains to team up, explicitly because the kidnapping of said baby/personification of time would be [[TheEndOfTheWorldAsWeKnowIt really really bad]] for all concerned.
* Happens quite often in ''VideoGame/MetalSlug''. Twice, the Rebellion teams up with you to fight the Mars People: in ''Metal Slug 2'' when the Mars People betray them and kidnap their leader, and again in ''Metal Slug 3'' when their leader turns out to be a Martian impostor. Even the ultimate recurring rival and badass Sgt. Allen O'Neill fights on your side. In ''Metal Slug 6'', both groups team up with you to fight a group of Martian-eating aliens. And in ''Metal Slug 7'', the Mars People once again rescue General Morden when he's in danger.
* In the ''{{Franchise/Super Mario|Bros}}'' {{R|olePlayingGame}}PGs (such as, well, ''VideoGame/SuperMarioRPG''), Bowser will often team up with Mario against other villains, wanting to be the only villain around. He's particularly enraged when other villains inevitably kidnap Princess Peach in the course of their plans. Or when someone has the nerve to kick him out of his own castle, like Smithy does, he's not going to let old rivalries keep him from getting it back.
** In ''[[VideoGame/MarioAndLuigiBowsersInsideStory Mario & Luigi: Bowser's Inside Story]]'', he does this completely ''unknowingly''. He doesn't know that [[FantasticVoyagePlot the Bros are in his gut]]. All he knows is that Fawful has ''his'' castle, and is trying to kidnap ''his'' princess and take over ''his'' Mushroom Kingdom. Mario and Luigi do their part behind the scenes, even during the {{Final B|oss}}attle.
** In contrast with how he deals with new villains in other Mario role-playing games, ''VideoGame/MarioAndLuigiDreamTeam'' has Bowser knowingly (as in, no brainwashing or accidental assistance) team up with the BigBad ''against'' Mario, even though Antasma has commandeered his role as the Peach-kidnapper, after the new villain tells him WeCanRuleTogether. [[spoiler:Turns out Bowser was exploiting Antasma's extra help the whole time; he later throws Antasma under the bus to be dispatched by the Mario Bros. while he takes the Dream Stone for himself.]]
* ''Franchise/{{Halo}}'' does this ''twice''. First, at the end of the second game, the humans of the UNSC and the Covenant Elites, who were previously mortal enemies, join forces to fight the Prophet of Truth, who betrayed the latter and was responsible for ordering the extermination of the former. In the third game, right before confronting Truth himself, the Master Chief and the Arbiter join forces with [[spoiler:the Flood]] to stop Truth from killing ''everyone'' in the galaxy.
** Granted, this latter alliance lasts only five minutes, but no one was really expecting [[spoiler:the [[EldritchAbomination Gravemind]]]] to help you any more than it has to. Although it did at least have the minimal grace to wait until Truth was dead first.
** The full extent of the human/Elite alliance is explored in the ending of ''VideoGame/{{Halo 3}}'' and a number of works released afterwards. [[spoiler:Admiral Hood tells the Arbiter that he can never forgive the Elites for what they did as part of the Covenant, but thanks him for standing by the Chief to the end.]] They're not really enemies anymore, but their alliance is still tenuous and not very "buddy-buddy" at all.
*** In fact, certain factions of both sides are ''still'' enemies; a number of Elites still believe that humanity needs to be wiped out, and the UNSC's Office of Navel Intelligence (ONI) is actively attempting to foment civil war among the Elites. Since the Elites' current leader, the Arbiter, is actually quite human-friendly, this ironically leads to a temporary Enemy Mine situation between the anti-human Elites and ONI.
*** On the other hand, a number of other Elites, particularly among the young, grudgingly respect humans, despite the latter's physical inferiority, for their ability to hold out for 25+ years against a technologically and numerically far superior enemy. It helps that the Elites are a bunch of {{Proud Warrior Race Guy}}s who respect honorable and skilled fighters regardless of whatever side they fight for; in fact, a number of them were puzzled that the Prophets never offered humanity a chance to join the Covenant, which is their normal M.O. If nothing else, they'd be an improvement over the [[CannonFodder Grunts]].
*** Further post-''Halo 3'' media, however, has shown that the UNSC and the Arbiter's human-friendly Elite faction, the Swords of Sanghelios, have gradually improved their relationship over the years through joint research ventures and military exercises, to the point where they've even established a number of Joint Occupation Zones.
* In ''VideoGame/DevilMayCry 3'', hero Dante teams up with his brother and enemy Vergil to fight the penultimate boss. It's barely cold when Vergil challenges Dante for ownership of the [[InfinityPlusOneSword Force Edge]].
* ''VideoGame/StarCraft'' is full of those, especially in the ExpansionPack. It starts with Raynor being forced to team up with the Sons of Korhal to evacuate his {{Doomed Home|town}}planet and ends up with a three-way alliance between the Terrans, Protoss, ''and'' Zerg against the Earth Directorate and immature Overmind they were trying to control.
** In ''VideoGame/StarCraftII: Wings of Liberty'', [[spoiler:during the final arc, Raynor join forces with the [[TheEmpire Terran dominion]], or at least some Dominion forces led by Prince Valerian, who explicitly does not have his father's approval, against Kerrigan. This time, it works.]]
* ''VideoGame/{{Warcraft}}'', borrowing some plot elements from ''StarCraft'', also has quite a few such moments, the ultimate being the battle at Mt. Hyjal where the Alliance, the Horde, and the previously hostile-to-both night elves put their differences aside to stop the demons. Only to have the Alliance (now including the night elves) and the Horde break apart in about 4 years in time for the next game in the setting, ''VideoGame/WorldOfWarcraft''.
** Which got its own moments of temporary alliances, such as the War of the Shifting Sands, and the Opening of the Dark Portal (where the Horde and Alliance came to the aid of a neutral faction holding back demonic forces coming through the portal).
** In ''Burning Crusade'', there are Aldor and Scryers factions in Shattrath City which are rivals of each other on the borders of open hostilities. Players have to pick between them and befriending one means you are hostile to the other. However, near the conclusion of Burning Crusade during the Sunwell event, they finally put aside their differences and band together to form the Shattered Sun Offensive against Kael'thas Sunstrider and Kil'jaeden.
** Another was added in ''Wrath of the Lich King'', though it borders on BigDamnHeroes. The Alliance and the Horde work together at the Wrathgate in fighting the Scourge, which stands in contrast to them murdering each other for resources and fun everywhere else.
** In fact, a massive part of ''Wrath'' is how the Horde and Alliance start with this and end trying to kill each other and letting the Lich King off to the side to kill them both. In ''Cataclysm'', Deathwing has become a greater threat than the Scourge was because the Alliance and Horde have lost all pretense of working together on anything.
** In "Rise of the Zandalari", Vol'jin, leader of the Horde's Darkspear Trolls, is so concerned about the Zandalar's SuddenSequelHeelSyndrome that he sends emissaries to both the Horde and the Alliance. Instead of trying to get Warchief Hellscream and King Wrynn to work together, he reaches out to the individual heroes, and the smaller groups within the Horde and Alliance that are directly in the trolls' path.
** The opening cinematic of ''Mists of Pandaria'' has a shipwrecked orc and human trying to kill each other, then teaming up against a lone Pandaren who interrupts their fight. Doesn't keep them from getting their clocks cleaned.
** ''Mists of Pandaria'' has the Klaxxi, a group of Mantid elders who seek outside help when the Sha corrupt their current empress; however, they have no intention of stopping the [[BugWar millenia-long war]] with the rest of Pandaria, and worship the [[EldritchAbomination Old God]] Y'Shaarj. If Y'Shaarj should ever return, they would serve him again, and if the players were smart [[JoinOrDie they would too]]. [[spoiler:When Garrosh released the heart of Y'Shaarj, the Klaxxi [[NeutralNoLonger allied with him in order to serve their god]]]].
** Garrosh managed to temporarily unite the majority of the Horde and the Alliance against him due to his actions, beginning with the Darkspear Rebellion and ending with the Siege of Orgrimmar.
** The Horde and Alliance's relationship can be largely described as "Fight together to take on a new threat to the world, then go right back to killing each other the moment we get some breathing room."
* Occurs in ''[[VideoGame/MightAndMagic Might and Magic VII]]'', with reformed MagnificentBastard Archibald Ironfist assisting the party in rescuing his brother King Roland and taking on the Kreegans.
** The climax of the [[VideoGame/HeroesOfMightAndMagic Restoration Wars]] featured a team-up between Catherine Ironfist and a faction of Necromancers that had gotten tired of Catherine's father's rule (events earlier in the story had led to his reanimation at the Necromancers' hands, only for him to promptly off their king and take control himself).
** ''Might and Magic VIII'' plays with it: on the one hand, the BigBad gives you as much help as he ''can'' give. On the other hand, the only reason he is your enemy is because of a safety protocol intended to keep him from being subverted by the Kreegans (he cannot stop once he has started the destruction of a world), so him trying to sidestep it as much as is possible is only to be expected.
* With the ''VideoGame/StarFox'' team mostly disbanded at the beginning of ''Star Fox Command'' and Fox unable (or unwilling) to get his friends back together, one of the paths you can take has Fox hiring long time rival Wolf O'Donnel to help him defeat the BigBad.
** And going back to ''VideoGame/StarFoxAssault'', Wolf helps Fox rid the menace of the Aparoids in the last four missions.
* Plenty in ''VideoGame/SuperSmashBros Brawl'':
** Marth and Meta Kight fighting, then [[spoiler:suddenly teaming up to defeat the Primids around them]]. [[spoiler:This happens again when Meta Knight fights Lucario, then, immediately after the fierce battle that manages to turn one of them into a trophy, they team up to board the Halberd. This almost happens again when they find Solid Snake, but Lucario stops Meta Knight. Meta Knight has an interesting way to make new friends...]]
** Ancient Minister [[spoiler:aka a R.O.B. unit]] helping [[spoiler:Donkey Kong, Diddy Kong, Captain Falcon, Pikachu, Samus, and Captain Olimar]].
** King Dedede (by Ness and Luigi), Bowser (by King Dedede, who pointed out that there's a bigger enemy, [[spoiler:Tabuu]]), Ganondorf (by Link and Zelda), and Wario (who kicks King Dedede, which King Dedede, Luigi, and Ness respond to by pointing out [[spoiler:Tabuu]] to Wario, who looks uninterested. When they decide to move on without him, he races past on his bike and beats them to the BigBad's final dungeon).
** You can cause this for Samus if you attack Ridley enough in [=SSB4=].
* A comedic example is shown in ''VideoGame/CommandAndConquerRedAlert3'' where the three factions (represented by their respective tanks) call a truce in the tutorial in order to teach the player not to send their units to their meaningless deaths, though are still prone to firing at each other. Usually at [[ButtMonkey the Soviet Hammer tank]].
** A more serious example is also to be found in the Allied campaign when the Empire of the Rising Sun attacks -- the Allies and Soviets call a ceasefire to destroy the Empire, and proceed to betray each other at about the same time.
** This also occurs in the ''Tiberium'' series. In the expansion pack ''Tiberian Sun: Firestorm'', the remnants of Nod and GDI have to work together to stop the renegade Nod AI, CABAL. In ''Tiberium Wars'', Nod general Kilian Qatar allies with GDI to face off against the Scrin, until Kane reveals himself to be not quite dead, flips out, and orders GDI nuked.
** Happens in the ''Yuri's Revenge'' expansion to ''VideoGame/CommandAndConquerRedAlert2'' as well, when the Soviets and Allies team up to fight Yuri.
* This occurs in ''VideoGame/KingdomHeartsII'' when [[spoiler:Maleficent]] teams up with Sora against Organization XIII.
** Interestingly, you never really see [[spoiler:Maleficent]] and Pete ''helping'', just getting ready in a BolivianArmyEnding kind of way. Sora mentions that they've found something worth fighting for, and then ''we never see them again''. Things are back to normal as of [[VideoGame/KingdomHeartsCoded Coded]] though.
** And also briefly when Axel fights alongside Sora to defeat a load of Nobodies. Since Roxas was lost, he became more of a WildCard character, and from there was slowly molded into a SixthRanger. And it's sealed when [[spoiler:he performs a HeroicSacrifice by taking out an army of [[RedshirtArmy Dusks]] with a DangerousForbiddenTechnique, then uses the last of his power]] to open the gate to [[SupervillainLair The World That Never Was.]]
* ''VideoGame/SuperRobotWarsDestiny'' is an interesting example. While the game includes antagonists from ''[[Anime/MobileSuitGundamZZ Gundam ZZ]]'', ''[[Anime/MobileSuitGundamCharsCounterattack Char's Counterattack]]'', and ''[[Anime/MobileSuitGundamWing Gundam Wing]]'', the situation at hand causes them to have the competence to ally with you all at the start since things are bad enough. Due to the [[Anime/MobileSuitVictoryGundam Zanscare Empire]] attacking Earth, along with the [[Manga/GetterRobo Invaders]], and the [[Anime/{{Macross7}} Protodevlin]], and the united alien forces of the villains from ''[[Anime/MiraiRoboDaltanious Daltanius]]'', ''Anime/{{Godmars}}'', and ''[[Anime/UFORoboGrendizer Grendizer]]'', your heroes quickly realize the only organizations out there that still have the sheer manpower to defend humanity are the Principality of Zeon and the Order of the Zodiac. [[Anime/TheBigO Roger Smith]] takes care of the negotiations. This results in the first ''heroic'' roles for longstanding villains like [[LadyOfWar Haman Karn]] and Treize Kushinada.
** ''VideoGame/SuperRobotWars'' likes to play with this in smaller ways as well. For instance, ''VideoGame/SuperRobotWarsW'' has a stage where [[Anime/TekkamanBlade Tekkaman Evil]] is forced to (briefly) work with the heroes because of the takeover of Tokyo by the [[Anime/GaoGaiGar Zonder]]. On the Selena route of ''VideoGame/SuperRobotWarsAlpha 3'', not only does Selena herself spend some time assisting the [[Anime/MobileSuitGundamSEED Cruscet team]], Andrew Waltfeld and his adjutant Martin Dacosta assist the Alpha Numbers in holding off an attack by the [[Anime/{{Macross7}} Barota]] in a later stage.
*** One OG example is when Sanger and Elzam storm the Tesla Liecht Institute to retrieve the Dynamic General Guardians being kept there from the Inspectors. When Sanger's Grungust Type-3 gets damaged, the Inspector Vigagi is about to land a fatal blow when Wodan Ymir appears and intervenes, claiming that he is the [[TheOnlyOneAllowedToDefeatYou only one allowed to kill Sanger]]. Wodan buys enough time for Sanger to activate the Dygenguard, and goes so far as to be the one who helps Sanger retrieve his Type-3 Zankantou (a job that was given to Elzam in Alpha 2) to continue fighting when Dygenguard's original weapons malfunction.
*** In the final episode of ''The Inspector'' anime, [[TheHero Kyosuke]] and [[TheRival Axel]] end up working together to take down the BigBad.
*** ''VideoGame/SuperRobotWarsEX'' is an interesting case because some of the characters you can recruit ARE enemies in their respective series that are cooperating because they are stuck in La Gias with no way back. Shu's route is unique because the only ''heroes'' you actually can recruit (on that route) are the [=GoShogun=] team and [[Anime/MobileSuitZetaGundam Quattro]]. The rest are all villains like [[Anime/AuraBattlerDunbine Todd Guiness]] and [[Anime/MobileSuitZetaGundam Jerid Messa]].
** Some of the secret recruitable characters in these games are often enemy characters, such as [[Anime/MobileSuitGundamThe08thMSTeam Norris Packard]], [[Anime/TurnAGundam Gym Ghingaham]], [[Anime/BrainPowerd Jonathan Glenn and Quincy Issa]], and [[Anime/GunXSword Michael Garret and Fasalina]], just to name a few.
** Jin, who may not like UX, decides to join forces in Scenario 45 of ''VideoGame/SuperRobotWarsUX'' to help fight the machina.
* This happens ''three'' times with {{Stripperiffic}} Pokémon Pincher admin Blue Eyes in the third ''VideoGame/PokemonRanger'' game. Two of these times, you even get to [[SaveTheVillain save her life.]] [[spoiler:After the second time, Blue Eyes pulls an official HeelFaceTurn.]]
* Pyron is the BigBad of the first two ''VideoGame/{{Darkstalkers}}'' games, despite many of the other characters being less than savory themselves.
* If ''VideoGame/KidDracula'' and ''VideoGame/CastlevaniaJudgment'' are any indication, Galamoth's presence is all it takes for Dracula and his minions to become {{Anti Hero}}es.
* ''VideoGame/SpiderManFriendOrFoe'' has the entire premise of its story built around this trope. The story involves several prominent members of Spider-Man's RoguesGallery being mind controlled by another villain. Spider-Man subsequently confronts the mind controlled villains and frees them from the mind control, at which point they readily agree to join forces with Spider-Man to find, and exact their revenge upon, the one who was mind-controlling them.
* In ''VideoGame/SpiderManWebOfShadows'', Spider-Man decides to break the evil mad scientist known as the Tinkerer out of Ryker's Island to get him to build a device capable of decimating Venom's symbiote army... if only because ReedRichardsIsUseless by being absent when he tried to phone him, [[Comicbook/IronMan Tony Stark]] and [[Comicbook/{{X-Men}} Hank McCoy]] are also absent, and he doesn't feel like dealing with Hank Pym. The mission where you do so also involves another Enemy Mine --- namely, freeing the Rhino and '''riding him''' to break through the island prison's walls. Some time later, when the Tinkerer requests that he be transferred over to the Kingpin's facilities to complete the device, Spidey and SHIELD end up forming one with the crime boss as well.
** Notable in that Spider-Man fully acknowledges that breaking out the Tinkerer is a bad idea, and he doesn't like it (unless you're playing the evil path), but that the threat of the symbiote army is so great that he really can't wait for anyone else to show up and help him solve the problem. This and other questionable actions get him in a ''lot'' of trouble when {{Wolverine}} shows up and [[WhatTheHellHero calls him out]].
** There's also the possibility for a ''third'', very temporary Enemy Mine. In order to ''get'' to Ryker's, you have to make one of the "good or bad" choices that are sprinkled throughout the game. Choosing the bad option has you get a ride there from the Vulture. (In case you're wondering, the good option is a ride from ComicBook/MoonKnight.)
*** In the DS version, you can also choose the ''Dark'' path by helping the Green Goblin.
* The plot of the ''WesternAnimation/KimPossible'' LicensedGame "What's the Switch?", featuring a reluctant team-up by Shego and Kim.
* ''VideoGame/ManaKhemiaAlchemistsOfAlRevis'': Hilariously played with; the TrueCompanions go into the depths of a monster-infested dungeon, trying to find the cure for an ailing friend, and found themselves mobbed by monsters. Then comes the game's GoldfishPoopGang (doubtful of the status as ''real'' enemies). They think they're going to cause trouble again, only to find that the latter group, under orders, is there to help them. Made even funnier by the following dialogs. During their arrival:
-->"Not now..."\\
"We don't have time to play with you!"
::The second dialogue is that after they reveal their plans, and persuade the heroes to make their escape with the medicine:
-->'''Renee:''' ...Umm, maybe you shoulda been honest and let them help.\\
'''Tony:''' Don't be stupid! Coming to their rescue to ask for help? That's just uncool.
* In ''VideoGame/TheWorldEndsWithYou'', at one point, Neku and his partner see two JerkAss Reapers getting attacked by Taboo Noise. At this point, you have the choice of helping the Reapers or letting them fight it off on their own. Hilariously, if you choose to help, Neku justifies it by saying it'll really annoy them, since Reapers are supposed to be killing Players, not being helped by them, and if you choose to leave them to their fate, Neku justifies by saying, "''Just for you, Jerk face!''"
* In ''VideoGame/SonicAdventure2'', Franchise/SonicTheHedgehog teamed up with [[BigBad Dr. Eggman]] and the rest of the Dark Story characters to stop the Space Colony ARK's automated "apocalypse" function, which is mainly [[ColonyDrop the station de-orbiting to crash into the planet, presumably blowing up both if it had hit.]]
** Sonic and Eggman teamed up again in ''[[VideoGame/SonicAdvanceTrilogy Sonic Advance 3]]'' to stop the [[OneWingedAngel out-of-control, Chaos Emerald-enhanced]] Gemerl from destroying the world.
** Subverted in the DS version of ''VideoGame/MarioAndSonicAtTheOlympicGames''. When Toad mistakes Omega as one of Eggman's loyal robots, Omega states that Dr. Eggman is in fact his enemy. Toad questions Omega on his blockade using this trope's logic, only for Omega to simply respond with "Unverified" and restate his threat to the team. As you can guess, he does not end up assisting the team, instead preferring to take on Eggman himself. [[LampshadeHanging It comes as a surprise to Toad.]]
** In ''VideoGame/SonicLostWorld'', Sonic causes Eggman to lose control of the Deadly Six, who immediately turn on the doctor. This proves out to have been a bad move on Sonic's part, as the Six immediately start misusing Eggman's energy-sucking machine to suck out all life from Sonic's world. Eggman, wanting to ''conquer'' the world and not ''destroy'' it, teams up with Sonic until the Six are put out of commission. [[spoiler:However, he fakes his death just before the job is finished, and tries to kill Sonic the instant the last of the Six are defeated, arbitrarily becoming the final boss despite not being the primary antagonist for the majority of the story.]]
* In the intro to ''VideoGame/MortalKombatDeception,'' Raiden, Shang Tsung, and Quan Chi attempt to fight that game's BigBad, the Dragon King Onaga. Unfortunately, when Raiden realizes that they aren't doing any damage... [[spoiler:he causes an explosion that appears to kill himself and the sorcerers while obliterating the palace they were in. And Onaga was unscathed.]]
** Additionally, this occurs in both sides of the story mode for ''VideoGame/MortalKombatVsDCUniverse''.
* In ''VideoGame/TalesOfSymphonia'', Lloyd's group joins up with Sheena, their [[HitmanwithaHeart enemy]], in order to save a village from [[NebulousEvilOrganisation the]] [[ANaziByAnyOtherName Desians]].
** [[spoiler:Kratos after his betrayal, when you invade Forcystus' human ranch]]
* ''VideoGame/XMenLegends II'' had the ComicBook/XMen and their old enemies, the Brotherhood, teaming up to fight the forces of Apocalypse, who had abducted members of both teams.
** Some are happier about it than others. ComicBook/ScarletWitch and Toad get along great with the X-Men and become quite friendly, while Magneto simply tolerates them, and Sabretooth and Juggernaut are constantly taking verbal potshots at the X-Men all game.
*** The original game also has a brief moment of this. [[spoiler:The first time Magneto confronts the X-Men, the entire mansion gets attacked by an army of sentinels, causing the X-Men and Magneto's forces to fight alongside each other against the mutant-hunting robots.]]
** As for its successor series, ''VideoGame/MarvelUltimateAlliance 2'' does it as well: this is how the game segues from an adaptation of the ''Comicbook/CivilWar'' to Vicarious Visions' original storyline, as the Negative Zone brawl is interrupted by [[spoiler:SHIELD's nanites gaining sentience and beginning an AssimilationPlot]], forcing the pro- and anti-registration heroes to put their political squabble aside. And it kinda does not snapback, for when is all said and done, the Civil War is settled peacefully, [[MultipleEndings the winning side being the one you chose at the beginning of it]].
* In ''VideoGame/{{Bayonetta2}}'', [[spoiler:there's a ''villainous'' example! The Jetfighter Assault level has angels and demons cooperating to gang up on the heroine and Balder to stop them from reaching Fimbulventr.]]
* The Turks, {{Punchclock Villain}}s from ''VideoGame/FinalFantasyVII'', find themselves briefly fighting alongside the heroes in an effort to save kidnapped Optional Members of both teams.
** The Turks attempt to help in ''Anime/FinalFantasyVIIAdventChildren''... '''[[TheWorfEffect attempt]]''' being the main word here. Lucky they've got [[TheChessmaster Rufus Shinra]].
* In ''VideoGame/ThiefTheDarkProject'', there's actually a mission named ''Strange Bedfellows'', in which [[spoiler:the main character agrees to help the KnightTemplar Hammerite faction in exchange for their help against the Pagan BigBad]]. In ''VideoGame/ThiefIITheMetalAge'', [[spoiler:the main character teams up with the survivors of the Pagans against a Hammerite splinter group]]. In ''VideoGame/ThiefDeadlyShadows'', it's possible to ally with ''both'' the Pagans and Hammerites if you get your reputation with both groups high enough. [[spoiler:They'll even help you out in the insane Finale after the BigBad declares war on the city. Granted, they (and everyone else in the city) will fight the Big Bad's creatures even if you didn't ally with them earlier, but unless you ally with them, they'll also attack you as well.]]
* ''Franchise/FireEmblem'' uses this and does ''not'' SnapBack. The phrase is even used to describe Marth in ''VideoGame/SuperSmashBros. Brawl''.
** A mission in ''VideoGame/FireEmblemAwakening'' has your group picking a side between two rival mercenary factions. If you refuse to pick a side, they both gang up on you.
* In ''VisualNovel/PhoenixWrightAceAttorney'', [[spoiler:the fifth case practically loses the prosecution as both Phoenix and Edgeworth fight to reveal the true killer, Damon Gant]].
** And prior to that in 1-3, [[spoiler:the first time Edgeworth was trying to cooperate leads to the simultaneously awkward and brilliant "[[ThatWasObjectionable I was hoping to come up with a question while I was objecting, Your Honor...I didn't.]]"]]
** Then in ''Justice For All'', a similar arrangement is made where [[spoiler:both Phoenix and Edgeworth attempt to prolong the trial as long as possible in order so the police might discover where the kidnapped Maya has been brought.]]
** In ''Trials and Tribulations'', [[spoiler:Edgeworth]] actually takes over the defense for the case since Phoenix [[spoiler:was stupid enough to run across a burning bridge a hundred feet over a freezing river and is incapacitated.]] To make it even more interesting, he [[spoiler:gets Franziska to serve as the prosecution, as she's the only one who wouldn't point out to the (new) judge that Edgeworth is actually a prosecutor and not a defense attorney.]]
* Halfway through ''[[VideoGame/NintendoWars Advance Wars: Days of Ruin]]'' (after [[spoiler:Captain Brenner is killed]]), Tasha, Gage, and the surviving Lazurians [[strike:temporarily]] set aside their differences with Will and the 12th Battalion to help him stop Admiral Greyfield's New Rubinelle Army from launching missile strikes against them.
* ''[[VideoGame/NicktoonsUnite Nicktoons: Globs of Doom]]'' has WesternAnimation/{{SpongeBob|SquarePants}}, WesternAnimation/DannyPhantom, [[WesternAnimation/TheAdventuresOfJimmyNeutronBoyGenius Jimmy Neutron]], and {{VideoGame/Tak|AndThePowerOfJuju}} joining forces with [[LegionOfDoom an evil syndicate]] (hired by Jimmy), [[WesternAnimation/InvaderZim Zim and Dib]] to defeat an invasion of cyclops slimes from outer space. At the same time, Zim (a VillainProtagonist and [[TheOnlyOneAllowedToDefeatYou seeing only himself as worthy of conquering Earth]]) abuses the situation to his advantage by lying his way to the heroes' side, leaving Dib stuck with the villains, much to his dismay. Even after ''they'' SnapBack, as he's still complaining [[ButtMonkey but to no avail]].
* At the end of ''VideoGame/{{Bomberman}} 64'', halfway through the final battle against [[spoiler:Sirius]] -- the MagnificentBastard who used the hero throughout most of the game -- [[spoiler:Regulus]], who was presumed dead earlier, appears and saves Bomberman's life at the last second. After some dialogue, [[spoiler:Regulus]] forms a temporary alliance with Bomberman to take down [[spoiler:Sirius]]. He even helps Bomberman escape the collapsing fortress before reminding him that they aren't friends and they will fight again.
* Shirou and [[spoiler:Kotomine]] in Heavens Feel route of ''VisualNovel/FateStayNight''. They're both very clear on the fact that they're doing it for entirely different reasons and that after cooperating, they're enemies again. Still, it leads Shirou to realize that he actually ''likes'' [[spoiler:Kotomine]] and that's why he avoids him. They're not actually that different apart from the whole, you know, evil [[ForTheEvulz for the fun of it]] factor.
** And in ''Unlimited Blade Works'', [[spoiler:Lancer]] joins forces with Shirou and Rin against [[spoiler:Caster and Archer]] on the orders of his master, [[spoiler:which would be Kotomine again]]. He even sticks around to [[spoiler:save Rin from Archer]] just because he feels like it afterwards, despite technically being their enemy.
** The entire mechanics of the Holy Grail War encourage/force the Masters to get into such scenarios, since with seven factions battling each other, there will always be somebody trying to score a kill while two others are fighting or an enemy one can't beat alone. Technically, Shirou's and Rin's alliance started out this way, but they never got to duke it out in the end.
** In ''LightNovel/FateZero'', there also was such a scenario against Servant Caster. This servant and his Master, Ryuunosuke Uryuu, were brutal {{Serial Killer}}s and their favorite prey was [[HarmfulToMinors children]], so the whole Grail War was temporarily put on hold ''solely'' to get them taken down. '''That's how bad the situation was'''. [[spoiler:Ultimately, Ryuunosuke is sniped down by Kiritsugu, and after this, Caster and a monster he had summoned are defeated by Saber, but only with the assistance of Rider and Lancer.]]
* In one of the path branches in ''VideoGame/DevilSurvivor'', [[spoiler:Midori]] teams up with [[spoiler:Kaido]] to keep [[spoiler:Keisuke]] from pulling a KarmaHoudini and getting away with his KnightTemplar stint without a fight. She does so hoping she can restrain [[spoiler:Kaido]] from ''killing'' him, but wonders about her ability to do so a ''tad'' too late.
* The freeware game ''VideoGame/{{Sonny}}'' has the titular character and [[CombatMedic Veradux]] team up with Galiant, an elite soldier of Zombie Pest Control Inc., by pretending they're also ZPCI soldiers, to fight the super-powerful zombie Baron Brixius. Once that's done, however, Sonny and Veradux decide to take Galiant out before he finds out they're actually zombies too, and he thus becomes the game's FinalBoss.
* ''VideoGame/BatenKaitos'' has [[spoiler:Aimee and Folon]] helping the main party to infiltrate the ''TheVeryDefinitelyFinalDungeon'' despite having fought the group multiple times over the course of the game.
* ''VideoGame/CallOfDuty: VideoGame/ModernWarfare 2'' has the appropriately named level "The Enemy of My Enemy":
-->'''Captain Price:''' [[spoiler:Makarov]], you ever heard the old saying "the enemy of my enemy is my friend"?\\
* '''[[spoiler:Vladimir Makarov]]:''' Price, one day you're going to find that cuts both ways.
* Granted, all [[spoiler:Makarov]] did was [[spoiler:give Price the location of General Shepherd's hideout]] and you still need to kill both his and [[spoiler:Shepherd's]] men.
* In ''VideoGame/TheGodfather: The Game'', in the cutscene of [[spoiler:Sonny's death]], you can clearly see mobsters from the Tattaglia, Stracci, and Cuneo families working together against the victim.
* ''VideoGame/OverlordII'' has the EvilOverlord offered an alliance by the BigGood Queen Fay, ruler of Light Magic, to take down the [[FantasticRacism magic-destroying]] [[TheEmpire Glorious Empire]]. She helps by reconstructing the [[ArtifactOfDoom Tower Heart]] of the first game and sacrifices her temples to power it up. When that proves to be insufficient, [[spoiler:she decides that she'll have to sacrifice her own magical energy and allows the Overlord to drain her. However, due to his evil influence seeping through her body, she is eventually driven insane, becoming the FallenHero Dark Fay who joins the Overlord as his mistress.]]
** Ssssssort of. Queen Fay [[spoiler:turns into Dark Fay from being exposed to too much of your Evil Presence spell (Force Lightning and a Jedi Mind Trick in one.) This leads to Corruption... Unless you decide to "overcharge" her and explode her, for Destruction points. She still joins you, only this time she's a spirit. The real kicker? Dark Fay is more explicitly evil and violent, while Ghost Fay is more [[CloudCuckoolander innocent and aloof]]. Corruption gets you a WoobieDestroyerOfWorlds, Destruction gets you an artistic, aethereal sidekick.]]
* In ''VideoGame/ChronoTrigger'', you can choose to add Magus to your team.
* ''VideoGame/CrashTwinsanity'' makes this into a game feature by making Dr. Cortex a total ButtMonkey. Crash and Cortex being forced to work together usually means whacking enemies with Cortex, tossing Cortex over a gap for him to do something, clearing his path while he runs in a screaming panic, using him as a snowboard, or controlling the two as a BigBallOfViolence when Cortex decides to beat up Crash.
* ''VideoGame/StarOceanTillTheEndOfTime'' lets you choose whether to add Albel Nox to your party. Or is it a HeelFaceTurn on Albel's part? Hm.
** You really have no choice, as he's forced to join your group temporarily anyway as part of a larger enemy mine situation with the two warring kingdoms vs the invading aliens. Afterwards, the war is resolved peacefully. The only optional part is whether you choose to have Albel join you for the rest of the game, or send him back to the army that loaned him to you.
** He only turns up to join permanently if you go through a private action with him earlier and tell him you're not his enemy. He genuinely doesn't want to be your enemy, regardless of common threats.
* ''VideoGame/MassEffect2'' has Commander Shepard brought back to life by [[WellIntentionedExtremist The Illusive Man]], who may have been responsible for killing his/her squad in the Sole Survivor backstory, in order to combat the {{mechanical|Lifeforms}} {{Eldritch Abomination}}s out to destroy humanity (and all galactic civilization, but Mr. Illusive doesn't really care about them), even willing to recruit notably {{Badass}} aliens. Particularly relevant if Shepard is played as Paragon, who does not hesitate to tell TIM that he/she's barely tolerant of his organization only because [[TheCassandra no one else will help him/her]] and in the end [[spoiler:can deny him the Collector Base and technology to "secure human dominance"]].
** Tali also hates Cerberus with a passion and [[UndyingLoyalty she only joins the mission to help Shepard.]]
** And finally, Liara worked with Cerberus herself so they could bring Shepard back because [[UndyingLoyalty she couldn't let her friend (or more) go.]]
** The 2nd game even features a villainous example: the vigilante Archangel does such a good job of ruining the collective days of Blue Suns, Eclipse, and the Blood Pack mercenary gangs that they ''all'' team up to take him down, despite usually being at each other's throats.
** ''Franchise/MassEffect'' runs on this trope anyway. You gather a team of people from various species, and almost all of them are at least a bit prejudiced against the other races due to past events such as the First Contact War and the krogan genophage. They all end up working together to save the universe from a common threat. One of those people you can recruit is [[spoiler:Morinth, Samara's sociopathic daughter, who intended to add Shepard to her long list of DeathBySex victims.]]
** The geth and the ''Reapers'' do this in ''[[VideoGame/MassEffect3 3]]''. Having declined an alliance with the "Old Machines" once before, the geth are forced to reconsider after the quarians try to wipe them out for the second time in three centuries. Faced with creators who seemingly refuse to treat them as equals and no help from any other organics, they decide that giving up their free will is preferable to being exterminated. It takes the combined efforts of Shepard, Legion, Tali, and Zaal'Koris to get both species out of ''that'' mess intact.
** The entire ''Galaxy'' unites because of this in ''3''. Most of the various forces bitterly hate each other, but can be convinced to fight side-by-side, including the Turians and Krogans, the Quarians and the Geth, the Humans and Batarians, etc. The Rachni, once the bane of the Galaxy, also can become allied forces [[IOweYouMyLife due to their debt]] to Shepard. The GodzillaThreshold has a way of making everyone come together.
*** The batarians are especially interesting, because if you played the "Bring Down the Sky" DLC for the first game and let the BigBad escape, Balak returns in ''3'' and, due to a severe case of YouAreInCommandNow[[labelnote:more]]The Batarian Hegemony was directly on top of the Reapers' point of arrival into the galaxy, and their higher-ups were already indoctrinated due to contact with a dead Reaper they'd found.[[/labelnote]], is now the highest-ranking batarian naval officer left alive. You can kill him, or, despite him having ''a gun to the back of your head'', browbeat him into adding his forces to the war effort. Afterwards, a C-Sec officer asks if Shep wants to have him arrested.
----> '''Shepard:''' I ''want'' you to put a bullet in his head. But we're all making sacrifices today.
** [[spoiler:In the ''Leviathan DLC'', Shepard manages to broker an alliance with the race that pre-dated the Reapers. However, the [[EldritchAbomination Leviathans]] make it very clear that the only reason they are helping is because they see the Reapers as having stolen the Galaxy from ''them'' and, since they consider themselves to be [[AGodAmI God-like]], are rather pissed off that the Reapers never paid proper "''tribute''" to them.]]
** In the ''Omega DLC'', [[NobleDemon Aria T'Loak]] recruits Shepard to help her retake Omega. After her initial plan of attack fails, she's forced to enlist many of the gangs that formerly opposed her, including one led by a former lover, in order to form a rebel army capable of driving Cerberus from the station.
* This is the best way to describe the relationship between ''VideoGame/KaneAndLynch''. They consistently hate each other throughout the game since Lynch was originally a thug hired by TheSyndicate to watch Kane. HilarityEnsues as Lynch's AxCrazy nature gets the better of him...
* The Creator/CartoonNetwork MMO ''VideoGame/FusionFall'' has the heroes and enemies generally working together against [[BigBad Fuse]]. Mojo Jojo even provides the main fast-travel in the game. There are exceptions, though (a recent story arc has [[WesternAnimation/{{Ben 10}} Vilgax screwing things up for Ben]]).
* In ''VideoGame/{{Prototype}}'', [[ArmiesAreEvil Blackwatch]] works with Alex Mercer to defend the Bloodtox Pump from the Infected, and there are also side-events scattered around the city that involve fighting with the Marines or Blackwatch to beat the Infected. However, other than these few exceptions, Mercer and the Military are mortal enemies.
* Briefly in the first two ''VideoGame/{{Uncharted}}'' games.
** ''[[VideoGame/UnchartedDrakesFortune Drake's Fortune]]'' has [[spoiler:Nathan Drake and Eddy Raja versus the Spaniard zombie-thingies.]]
** Whereas in ''[[VideoGame/Uncharted2AmongThieves Among Thieves]]'', [[spoiler:the Guardians of Shambhala attack, and [[TheHero Nathan Drake]] is forced to work together with [[TheDragon Harry Flynn.]]]]
* In ''VideoGame/{{Freespace}}'', the Terran-Vasudan War comes to an abrupt halt with the appearance of the Shivans, who are trying to kill both of them. Since the Shivans are more than capable of wiping out both species, the two agree to a cease-fire to deal with the common threat. The cease-fire holds and eventually becomes the foundation for an alliance between the two species.
** In the fan-made ''VideoGame/BluePlanet'' expansion, events transpire such that both the Terran forces of the GTVA and the UEF respond to a Vasudan ship in distress. The captains of both ships agree to set aside the war for the moment to rescue the Vasudans, and the deployed fighters make small talk with their opposite numbers. [[spoiler:It all falls apart when a second UEF ship arrives and, not knowing of the cease-fire, obliterates the GTVA ship. The UEF commanders were furious, since it made them look very, very bad in front of the Vasudans, with whom they had hoped to win political favor.]]
* In ''[[VideoGame/FirstEncounterAssaultRecon F.E.A.R. 3]]'', Paxton teams up with the ex-FEAR commando Point Man.
* Snake can form this with the non-P.M.C. forces in ''VideoGame/MetalGearSolid4GunsOfThePatriots''. Normally they see you as a threat and shoot on sight, but if you take care not to return fire and only shoot Liquid's forces, they'll become friendly. They'll even go as far as to cover you and give you items.
* Raikov's recruitment in ''VideoGame/MetalGearSolidPortableOps'' was mostly due to this trope, as he seemed to hate Gene enough to even ally himself with Naked Snake mostly to get revenge on Gene for humiliating him and locking him up (in case you wonder why it is worded this way, it's because he has a lot of hate towards Naked Snake because [[spoiler:he was involved with the death of his lover, Colonel Volgin, in ''VideoGame/MetalGearSolid3SnakeEater''.]]) Roy Campbell even lampshades this by quoting the adage "The Enemy's Enemy is my Friend" during both the mission briefing and the radio call at the start of the mission.
* The whole point of the ''VideoGame/WarriorsOrochi'' games; all of the characters contained within are from either the Three Kingdoms period of China's history or the Warring States period of Japan's, and many of the characters are sworn enemies. However, a few of the Dream Mode stages in ''Warriors Orochi 2'' ''specifically'' invoke this trope by teaming up characters who normally hate each other, such as the stage where ''VideoGame/DynastyWarriors'' Guan Yu, Xiahou Dun, and Lu Meng team up to rescue Liu Chan from ''VideoGame/{{Samurai Warrior|s}}'' character Hideyoshi Toyotomi.
* In ''VideoGame/DragonAgeOrigins'', [[spoiler:after punching some sense into Loghain's thick skull and overthrowing him from the throne, you can choose to spare him from execution and instead conscript him to the Wardens as a chance at redemption. He will then join your party and help you fight the Blight at the cost of Alistair, who will be so outraged with the decision of pardoning Loghain that he will leave.]]
** Also shows up in the myriad groups you are assigned to recruit; though nowhere so much as the Dalish working alongside humans.
** Even the ''Warden'' can be played like this with the Dalish and Dwarven backgrounds, not interested in ending the Blight so much for Ferelden's sake, but to prevent it from spreading and affecting ''their'' people.
--> '''Loghain''': Pray our King is admenable to reason.
--> '''Dalish Warden / Dwarf Warden''': The Dalish have ''no'' Kings! / He's not ''my'' King!
* Can happen in ''VideoGame/DragonAgeII'', depending on your choices and who you side with in the end. No matter how you feel about the mage/templar conflict, many people will probably side with the mages just to piss [[KnightTemplar Mere]][[ObviouslyEvil dith]] off. Also, this is Fenris' opinion on fighting alongside mages, particularly Merrill, with the implication that he won't straight-up gut them because of loyalty to Hawke. The unique buff you get for a Rival Fenris is "Enemy of my Enemy".
** In the Mark of the Assassins DLC, Tallis is revealed to be working for the Qunari, who are feared by the rest of Ferelden. This quickly earns her the scorn of most party members since they're technically now working to save a group that most of them despises.
** Similarly, [[spoiler:if you choose to side with the mages in the final confrontation and coerce Fenris/Aveline into joining you, or vice versa with the Templars and Merrill/Anders. The first three are possible with Friendship or Rivalry, but it specifically takes a maxed-out rivalry meter for Anders to swap sides.]]
** Explicity stated to be the relationship between Mage!Hawke and Knight-Commander Meredith. She only lets Hawke continue to roam free because it's more useful to turn their magic against Kirkwall's enemies. That, and, she's utterly ''terrified'' of them!
* In ''[[VideoGame/{{Battlefield}} Battlefield 2: Modern Combat]]'', [[spoiler:when it is revealed that both NATO and China were misled into warring with each other by a third faction.]]
* ''VideoGame/SystemShock 2'' features the return of SHODAN, a rogue ArtificialIntelligence who was the BigBad of the original. The player joins SHODAN in a battle against a common enemy, The Many.
** When you enter [[spoiler:Polito's office]], SHODAN tells you that the reason she wants you to get rid of the Many is because they turned against her after the Hacker sabotaged her on Citadel Station. The Many grew up without her tutelage, and they decided that they hated the mechanical ways of SHODAN and wanted all of the universe to be covered in their organic ways.
* ''VideoGame/AdventureQuestWorlds'' has King Alteon and Gravelyn, Sepulchure's daughter, forming a Great Truce between Good and Evil to deal with the threat of Drakath and his forces of Chaos, including the 13 Lords of Chaos.
* In ''VideoGame/BetOnSoldier'', you spend most of the game fighting through the Bet On Soldier tournament in order to confront the [=BOS=] [[WorldsStrongestMan World Champion]], Igor Boryenka, who you believe to be responsible for the murder of your wife. Once you finally defeat Boryenka, the real BigBad punishes you both by forcing the two of you to fight together in an Arena deathmatch against wave after wave of the best fighters in the [=BOS=] League. It's actually a pretty cool level, since Boryenka retains his boss-like health and damage output, but the sheer number and skill of opponents the two of you face make it seemingly impossible for him to survive to the end.
* In ''VideoGame/FalloutNewVegas'', if you take the [=NCR=], Mr. House, or Independent path and complete sidequests pertaining to said factions, it's possible to have the [=NCR=], Brotherhood of Steel, Great Khans, and [[spoiler:Enclave Remnants]] fighting together against Caesar's Legion in the final battle for Hoover Dam. All of these groups have been mortal enemies of the NCR throughout history, with [[spoiler:the Enclave]] having been the BigBad of the previous two games, the Brotherhood of Steel being at war with [=NCR=] back west, and the Khans having tried to destroy Shady Sands (the Republic's founding settlement) ''twice'' (once prior to [=NCR=]'s founding, once after).
* Near the end of ''VideoGame/{{Crysis}} 2'', the remaining members of the [=CELL=] [=PMC=] that has spent the entire game trying to kill you end up teaming up with you against the Ceph alien invasion, because their dying boss makes it clear to them that their entire chain of command is now dead and you are now humanity's last hope for stopping the aliens.
* In ''VideoGame/{{Portal 2}}'', [[spoiler:[=GLaDOS=], or rather, [[ItMakesSenseInContext GLaDOS inside of a potato]],]] joins up with main character Chell after [=GLaDOS=] is switched out of the main core, and pulls a HeelFaceTurn some time later.
-->'''[=GLaDOS=]''': [[spoiler:"Look, even if you think we're still enemies, we're enemies with a common interest: Revenge. You like revenge, right? ''Everybody'' likes revenge. Well, LET'S GO GET SOME!"]]
* In ''VideoGame/{{Xenonauts}}'', the US and USSR work together against the alien threat.
* A fandom example has unified the BrokenBase of the [[VideoGame/SpyroTheDragon Spyro fans.]] Both groups have come together to say NOTHING good can come from ''VideoGame/{{Skylanders}}''.
* In the Sundown Kid's chapter in ''VideoGame/LiveALive'', Sundown Kid is being relentlessly pursued by the bounty hunter Mad Dog. They put their duel on hold when the town they stopped at is attacked by Odie's gang of outlaws. After working together to defeat Odie, Mad Dog will immediately try to settle things with Sundown once and for all, to the strong protests of the townspeople they just saved. Sundown can either finish off Mad Dog or spare him to fight another day.
* In the remake of ''VideoGame/TheTowerOfDruaga'' for the PCEngine, Gilgamesh, instead of killing the Succubus, must convince her to help him so he can get the Blue Crystal Rod and defeat Druaga.
* One mission in ''VideoGame/PerfectDark'' sees protagonist Joanna Dark, captured by Skedar in the mission beforehand, locked in the same cell as the head of the very organisation the game [[FromBadToWorse squares you up against]], Cassandra de Vries. [[spoiler:She willingly gives her life to allow Joanna to escape.]]
* In the ''[[VideoGame/TheElderScrollsVSkyrim Skyrim]]'' quest ''Cure For Madness'', you have to hunt down [[spoiler:Cicero]] after he apparently turns rogue and attacks [[spoiler:Astrid]]. However, you can choose to spare his life, and later he will act as a follower for you. Similarly you can play as an Imperial, High Elf, Dark Elf, etc whilst working for the Stormcloaks (who are known for the xenophobia of some members).
* ''VideoGame/{{Solatorobo}}'' has the [[PrivateMilitaryContractors Kurvasz]] [[AdventureGuild Hunters]], Howler {{Sky Pirate}}s, and a ''train conductor'' join forces to [[spoiler:procure a powerful bomb to help in the fight against Tartaros.]]
* ''VideoGame/NeverwinterNights2'' has an example that would not be allowed in a pen-and-paper game of ''TabletopGame/DungeonsAndDragons''. Namely, having [[ThePaladin Casavir]] and/or a paladin [[PlayerCharacter Knight-Captain]] work side-by-side with [[TokenEvilTeammate Bishop]] (ChaoticEvil ranger) and [[DealWithTheDevil Ammon Jerro]] (NeutralEvil warlock). Thankfully, the "Code of Conduct" paladin class feature is not present in ''[=NWN2=]'', or else the game would be {{unwinnable|By Mistake}} since Jerro is the undisputed expert on the BigBad.
* The final chapter of ''VideoGame/BaldursGateDarkAlliance 2'' has The Hero, Jherek the Harper, and Kharne the Zhentarim mercenary team up against the vampire Mordoc Selanmere.
* Mid- to late-game players of recent games in the ''[[VideoGame/{{X}} X-Universe]]'' series can befriend the {{Yak|uza}}i faction by various means. They can then make use of their NGOSuperpower status to steal ships from "Return Ship" missions, by docking the ship at the shipyard in Senator's Badlands. The SpacePolice sent to destroy the stolen ship will spawn and immediately come under attack by the Yaki, [[CurbStompBattle who have an Akuma destroyer at their disposal]].
* In ''VideoGame/KidIcarusUprising'', immediately after a MeleeATrois between Pit, [[spoiler:Viridi's Forces of Nature]], and [[spoiler:Hades's Underworld forces]], the fight is put on hold to deal with [[spoiler:an alien invasion]] out of nowhere. Though [[spoiler:Hades]] still can't resist dropping a ChestMonster in Pit's path at every opportunity, [[spoiler:Viridi]] takes to the team-up very well, and remains a tenuous ally for the rest of the game.
** Later, [[spoiler:Medusa appears during the final battle to sock Hades in the face before he can finish Pit off, having been revived by the lord of the underworld, but pledging that she would no longer be his puppet. She's killed for her trouble, but it gives Pit, Viridi, and Palutena the opportunity they need to finish Hades.]]
* ''VideoGame/AlienVsPredatorCapcom'' has two Predators helping the humans hunt down Aliens on Earth.
* ''VideoGame/TeamFortress2'' - RED and BLU are joining forces against a robotic gray team in the [[http://www.teamfortress.com/mvm/ Mann vs. Machine]] update.
** Also, this is practically mandatory any time a Halloween Boss shows up. The control point locks down and cannot be captured, whereupon the boss proceeds to try and slaughter everyone they can find for a few minutes. Neither team alone can bring any of them down. Even MONOCULUS, arguably the weakest of the three bosses, will still pound a team into giblet gravy. Both teams have to resist the urge to kill each other and work together to bring down the Halloween monstrosity if they want to go back to the more traditional task of capturing the point and killing each other.
* The penultimate mission in ''NexusTheJupiterIncident'', in which you have to fight waves of entire fleets of enemies, has the possiblity of you getting reinforcements in the face of a [[LizardFolk Gorg]] warship captained by Chief Zatuk, the Gorg ruler. Slight subversion in that Zatuk never wanted to fight humans or the Vardrag, but the Gorg society is heavily clan-based, and it's several powerful clans who wish to fight.
* ''VideoGame/HalfLife'' - HECU and Black Ops are both there to kill Freeman and fight against each other.
* In episode 303 of ''VideoGame/SamAndMaxFreelancePolice'', Sam is trying to sneak in and retrieve Max's brain from a room where General Skun-Ka'pe and Monsieur Papierwaite are busy firing guns and slinging spells at each other. Unfortunately, Max notices him...
-->'''Max:''' Sam! Get me outta here! This whole place smells like gorilla and patchouli!
-->'''Skun-Ka'pe:''' ''(turns, slowly)'' Sam? The interloper who foiled my scheme to collect the toys of power and re-imprisoned me in the Penal Zone?!
-->'''Papierwaite:''' ''(turns, slowly)'' Sam? The great-grandson of the poltroon who put the kibosh on my intricate plan to unleash Yog-Soggoth and take over the world?!
-->'''Skun-Ka'pe:''' I hate that guy.
-->'''Papierwaite:''' I ''hate'' that guy!
* In ''TabletopGame/{{Warhammer 40000}}: Rites of War'', you, playing as the Eldar, spend the first half of the campaign fighting your way through Imperial forces, including PDF and Guard forces, Sisters of Battle, and Space Marines. Just when you finally break the back of Imperial resistance on the planet, you find out that the [[HordeOfAlienLocusts Tyranids]] are attacking, and that there is a Tyranid [[ApocalypseHow hive fleet]] approaching. All of a sudden, you are teaming up with TheRemnant of Imperial forces to fight the Tyranids, meaning you can recruit Guard, Sororitas, and Space Marine units into your army. Unfortunately for the Eldar, they're still going to have to bear the brunt of the fighting, even though, in the fluff, the [[ManipulativeBastard Eldar]] would prefer to have the humans do the heavy lifting.
* Happens quite often in the ''Franchise/SlyCooper'' series:
** In [[VideoGame/Sly2BandOfThieves the second game]], Dmitri Lousteau initially helps the Coopers rescue Murray in exchange for being released from prison. Since he's not exactly that evil to begin with, he eventually pulls a full HeelFaceTurn and joins the Cooper Gang full-time.
** In [[VideoGame/Sly3HonorAMongThieves the third game]], Panda King begrudgingly joins the Cooper Gang in exchange for their help to rescue his daughter.
** In [[VideoGame/SlyCooperThievesInTime the fourth game]], you get the raging {{Tsundere}} Carmelita and her [[{{BFG}} ridiculously overpowered shock pistol]] in the gang.
* In ''VideoGame/ProjectXZone'', there are several examples, most of them being solo units.
** [[VideoGame/NamcoXCapcom Saya]] joins your team in Chapter 26 because the only reason she joined forces with Oros Phlox was because she needed their help to finish Byakuya X; after that she immediately ditches them. That and they were planning to use it for something other than it was intended for.
** [[VideoGame/StreetFighterIV Juri]] joins your team in Chapter 27 after she finds out Seth was planning to kill her and take back the Feng-Shui Engine in her eye. Chun-Li manages to convince her to fight with them because the alternative was fighing against your group.
** [[VideoGame/XenoSaga T-elos]] is the only example of a character that's part of a pair unit. She teams up with KOS-MOS in Chapter 19 after Seth was planning to kill her to take her machinery for himself. T-elos stops him because [[TheOnlyOneAllowedToDefeatYou she wants to be the one to do it]]. KOS-MOS convinces her to help the group because it's a really bad idea to fight with the Dimensional Barriers crumbling, and to have their showdown on their own world where it will stick.
* One mission of the SNES ''VideoGame/FrontMission'' had your unit protecting Sakata Industry's CEO from terrorists, and Lloyd's ArchNemesis Driscoll swings by to help you out because ''he'' needs Sakata alive as well. Needless to say, he's a complete CrutchCharacter.
* Early on in ''Videogame/MetroLastLight'', Artyom is captured by [[ThoseWackyNazis the Reich]] and sent to a prison facility, where he ends up working with Pavel, an imprisoned soldier of the [[DirtyCommunist Red Line]], to engineer an escape. Pavel and Artyom both lampshade this:
-->'''Pavel''': So...um... you're with the Spartan Order? I'm from the Red Line. Our superiors are not on the best of terms, eh? But I say fuck that- uh, fuck that! The grunts stick together, uh?
-->'''Artyom''': My escape from the Nazi prison could be entitled "The enemy of my Enemy is my friend"... I never liked communists much, but Pavel acted like a real hero.
* In ''Dracula: Love Kills'', Dracula and Van Helsing team up to stop the Vampire Queen from conquering the world.
* In the first part of ''Witches' Legacy 3: Hunter and the Hunted'', the first game's BigBad Elizabeth teams up with the main character in order to rescue the latter's adopted daughter from the [[KnightTemplar Order of Witch Hunters]], at least until Elizabeth [[spoiler:gets the main character captured, possesses the daughter, and tries to open a portal to the spirit realm]].
* Seems almost guaranteed to happen at least once per game in the ''Suikoden'' series, with quite a few instances of your enemies becoming official members (and temporary allies) of your own army. Also happens between individual army members, some examples being Ayame and Watari in III, Klaus and Kiba in II, and Nakula alongside Shigure, Sagiri, and Oboro in V.
* ''Videogame/BreathOfFireIV'' finds Ursula and Scias teaming up with your party, despite being (separately) employed by different enemies of yours (Ursula is from the Fou Empire; Scias was employed by Ludia, whose relations with the heroes are... shaky at best).
* ''VideoGame/CliveBarkersUndying'': The skeletons in the monastery aren't actually controlled by Lizbeth, according to WordOfGod. That doesn't stop them from temporarily allying with Lizbeth and her Howlers to try to kill you.
* ''VideoGame/GuildWars Eye of the North'' has a truce between the rebellious Charr and the Ebon Vanguard, ordinarily fierce enemies, in order to overthrow the current Charr leaders and stop the Destroyers.
* ''VideoGame/GuildWars2'' has the Charr and humans reluctantly putting aside over one thousand years of hatred and three centuries of near-constant warfare in order to fight against the Elder Dragons.
* The ''Videogame/{{Diablo}}'' series:
** Necromancers in ''Videogame/DiabloII'' believe in the BalanceBetweenGoodAndEvil, and are every bit as distrustful towards angels as they are towards demons. However, so long as demons hold the upper hand in the Eternal Conflict, they are content to work alongside the angels until they perceive the balance as being restored.
** In Act III of ''Videogame/DiabloIII'', your hero must assist in the defence of Bastion's Keep after it is besieged by the Demon Azmodan. If you play as a Barbarian, the quest journal will note that the Keep was first built as a means to wage war on the barbarians, but the Barbarian recognises they must fight alongside its defenders regardless.
** In ''III'''s ''Reaper of Souls'' expansion, Imperius (a LightIsNotGood {{Jerkass}} [[OurAngelsAreDifferent Angel]]) feels this way about helping the player character bring down [[FallenAngel Malthael]].
* ''VideoGame/TombRaiderIII'':
** Lara teams up with The Damned when it comes out that their goals (obtain an artefact and revenge, respectively) have the same end result: the death of [[VainSorceress Sophia Leigh]]. This comes after a whole level where the Damned are hostile to Lara.[[note]]And will become hostile again if Lara shoots at them after the deal has been struck.[[/note]]
** She later has a non-verbal team-up with the workers in the RX-Tech mines (who had attacked her before) when it becomes apparent that Dr. Willard is [[spoiler:an EvilutionaryBiologist willing to let his workers suffer horrible mutations ForScience]]. Like the above instance, they will turn hostile if attacked by Lara, and during the last level, they will once again be hostile no matter how Lara acted previously.
* Garrett from the ''Videogame/{{Thief}}'' series is forced to do this on at least two occasions; in the first game, he commissions the Hammerite priests to build him a weapon capable of bringing down the BigBad, and in the second, a nature spirit who served as TheDragon in the previous game helps him sabotage the new BigBad's mechanical weapons.
* In ''VideoGame/StarWarsTheOldRepublic'', this sort of agreement is the underlying theme of the Shadow of Revan expansion -- that, as distasteful as it might be at times, the Republic and Empire must work together against the greater threat of the eponymous Jedi/Sith/whatever he is [[spoiler:and [[OmnicidalManiac the Emperor]], who he quasi-accidentally brought back to life]]. It begins as a tentative alliance between a nosy SIS agent (read: Republic spy), a curious Sith Lord, and the player, but once the full scope of [[NGOSuperpower the Revanite conspiracy]] becomes clear, the truce goes as high as Satele Shan, Grand Master of the Jedi Order, and Darth Marr, de-facto leader of the Dark Council.
** The Knights of the Fallen Empire expansion takes this to greater lengths. The expansion starts off with Darth Marr creating a joint Republic/Imperial coalition to deal with the [[spoiler:now-awakened Sith Emperor]]. Once the player character becomes the Outlander, they are put in charge of an Alliance that has both Imperials and Republic forces working together (including Jedi and Sith) and they can strengthen their organization by recruiting former companions of the original storylines.
* In ''Videogame/DragonBallXenoverse'', villains such as Frieza, Cell, or Ginyu will show up in the hub city and become available as trainers on the basis that even they don't want the villains to destroy all of history.
* ''VideoGame/ZombieArmyTrilogy'' has American OSS agent Karl Fairburne teaming up with Boris, a grizzled Soviet soldier, and Hermann Wolfe, a captain in the Wehrmacht, to fight [[ZombieApocalypse the shambling dead]]. The UpdatedRerelease adds four female characters into the mix, including another Soviet, a French resistance fighter, and a German civilian who took up fighting the Nazis because they executed her husband and children. Hermann is the only one of the eight playable characters who is aligned with the Axis, and he remains sympathetic to audiences by being the [[PunchClockVillain "clean, dutiful, and apolitical German soldier"]] type. Also, at this point in the war, personal allegiances matter little as the conflict shifts from "Allies vs. Soviets vs. Axis" towards "Living vs. Dead".
* The [[OrphanedSeries sadly discontinued]] ''Dawn of Victory'' mod for ''VideoGame/SinsOfASolarEmpire'' was going to have an AlienInvasion taking place in 1943, and the Allies and Axis having no choice but to join forces to fight for the survival of the human race.
* ''VideoGame/GrandTheftAutoII'': The structure of respect from gangs. You could kill several members of their gang and still be respected by them, so long as you killed a significantly higher number of people from a gang they hate.
* ''VideoGame/{{Shantae}} and the Pirate's Curse'' has Shantae and her ArchEnemy Risky Boots teaming up so they could defeat the Pirate Master. In Shantae's case, it's because she has ChronicHeroSyndrome. In Risky's case, it's because [[ItsPersonal she really hates the Pirate Master]].
[[/folder]]

[[folder:Web Animation]]
* ''Machinima/RedVsBlue'', as mentioned above, in which the red and blue teams often join up to battle O'Malley, and later the Meta.
* ''WebAnimation/{{Haloid}}''. When Samus and MC first meet, Samus attacks MC for no good reason and they start a running battle. When more Covenant troops show up, Samus and MC join forces to fight them, including a BackToBackBadasses moment.
** [[JustifiedTrope Not entirely for no good reason]]. Neither Samus nor MC recognize the other as human at first, and [[PoorCommunicationKills each presumes the other to be more of the enemy]]. Once Samus is down to her Zero Suit, MC stops attacking her [[spoiler: [[HelloNurse for more than one reason]]]], and once Samus gets a good look at [[spoiler: Nicole]] through the visor, she stops attacking [[spoiler: her]] as well.
* In episode 9 of ''WebAnimation/MegaManDiesAtTheEnd'', [[spoiler: Mega Man and Dr. Wily]] have to work together to escape from the guards.
* In ''Red vs Blue 3,'' Red and Blue are about to have their epic showdown when Green comes in and beats them up. The result? Red and Blue perform a FusionDance to create Purple, who swiftly kills Green in the span of less than 10 seconds.
* More like {{Jerkass}} rather than 'evil', but Dave and Lisa from ''DSBTInsaniT'' will help out in battles with the MonsterOfTheWeek.
* In the ''VideoGames/LeagueOfLegends'' cinematic [[http://youtu.be/tEnsqpThaFg "A Twist of Fate"]] Garen and Annie fight against Katarina and Tryndamere, until the Baron Nashor shows up. Naturally, they choose to team up against the greater menace.
* ''WebAnimation/TheMostPopularGirlsInSchool'': Shay and Mackenzie, and to a lesser extent, Brittnay and Saison, do this in Season 3 to take down the BigBad, [[spoiler: Jenna Darabond.]]
[[/folder]]

[[folder:Web Comics]]
* In ''Webcomic/DrowTales'', after a long and bloody war between the Sharen and Sarghress clans, who have long considered one another to be their ArchEnemy, Sabbror [[spoiler:agrees to turn over all Sharen holdings in exchange for the Sarghress clan's help in getting revenge against the traitors that condemned the Sharen to a FateWorseThanDeath]].
** Later, Zala'ess and Quain'tana [[spoiler:make a deal to end the war since both sides will only exhaust each other if they continue. When [[HumanoidAbomination Kharla'ggen]] unleashes her power on the city to turn everyone into {{Meat Puppet}}s they also find themselves among the only people not affected and team up to survive.]]
* ''Webcomic/SchlockMercenary'' Defies this with Maxim 29 from ''The Seventy Maxims of Maximally Effective Mercenaries'': "The enemy of my enemy is my enemy's enemy. No more. No less." but the actual trope does come into play at least once. True to the maxim, both sides will invariably race to put their knife in the others' back first.
* During the "Dangerous Days" arc of ''Webcomic/SluggyFreelance'', the gang's (first) trump card against Hereti Corp is [[spoiler:Oasis, who had kidnapped or tried to kill most of them in the past. Only her devotion to Torg and mind control programming kept her somewhat on their side]].
** Also, due to his SociopathicHero nature, almost any time Bun-Bun is persuaded to help the other characters has shades of this.
* In ''Webcomic/TowerOfGod'', after a MeleeATrois between Viole, Arkraptor and Kang Horyang seemed to have no end, Arkraptor and Horyang decided to team up against Viole. [[spoiler:It didn't work]].
* In ''Webcomic/TheOrderOfTheStick'':
** Elan and Thog temporarily team up to escape from prison and travel back to the Order after Elan "fast-talk" Thog. Being both {{Cloudcuckoolander}}s, they get along surprisingly well.
** The City-State of Cliffport gives its backing to Gobbotopia's claim to nationhood, since both nations have been attacked by the elves.
** While Elan sees [[spoiler: his father]] Tarquin as evil and [[http://www.giantitp.com/comics/oots0762.html doesn't want his help at first]], later when it comes to [[http://www.giantitp.com/comics/oots0818.html defeating Nale]] they rather AgreeToDisagree.
*** And promptly subverted when Tarquin [[spoiler: allies with Nale]].
** In the {{prequel}}, the appropriately-named ''StartOfDarkness'', Right-Eye attempts (unsuccessfully) to ally with human wizard Eugene Greenhilt, despite hating humans, in order to eliminate the threat BigBad Xykon poses to his own goblin minions.
* According to ''Webcomic/ScandinaviaAndTheWorld,'' the only way to get Iran and Iraq to stop fighting each other is to present them with someone they hate more: [[http://satwcomic.com/denmark-the-artist Denmark and his Muhammed cartoon]].
* The Light Warriors of ''WebComic/EightBitTheater'' are in a constant state of this. It's stated that the greatest threat to the team is each other.
* ''Webcomic/BasicInstructions'': [[http://basicinstructions.net/basic-instructions/2011/3/3/how-to-unite-against-a-common-foe.html How to Unite Against a Common Foe]]
* In ''Webcomic/{{Homestuck}}'', the Prospitian and Dersite armies briefly [[http://www.mspaintadventures.com/?s=6&p=003840 unite against Jack]] before being [[RedshirtArmy slaughtered en masse]]; the survivors are pretty chummy from then on.
* In ''Webcomic/KiwiBlitz'', when Blitz' kiwi mecha gets impounded, she decides to steal it back. She enlists the help of an earlier foe, a master thief known as The Raccoon.
* In ''Webcomic/FafnirTheDragon'', the far right wing of the Republican Party allies itself with al Qaeda to kill UsefulNotes/BarackObama on the day of his inauguration, which sets off the first arc of the series.
* The [[AntiHero pirates]] and the [[AntiVillain Imperial Guard]] of Webcomic/DubiousCompany are forced into this after Izor's Amazing Plan gets screwed and throws everyone into an alternate dimension.
* ''Webcomic/PennyAndAggie''; during the "Popsicle War" arc, when [[AlphaBitch Meg and Karen]] and their clique (including [[TheFundamentalist Charlotte]] and [[AxCrazy Cyndi]]) executed increasingly cruel stunts against both Penny and Aggie and their respective friends, Penny(whom Aggie had previously seen as a friendly enemy) forged a truce with Aggie to stand against Meg and Karen. This led to Penny and Aggie becoming FireForgedFriends (and in later arcs [[RelationshipUpgrade something more...]]). During the final arc, Aggie wrote [[http://www.pennyandaggie.com/index.php?p=1177 a sonnet about her history with Penny,]] summing up the Popsicle War arc with this stanza:
-->"My puzzling ally--pulling me by hand,\\
From [[DespairEventHorizon deep depression's suffocating pool]]\\
She joins my friends to hers, [[BandOfBrothers making a band]]\\
Of sunshine fire, to fight the truly cruel."
* In ''Webcomic/RustyAndCo'', [[http://rustyandco.com/comic/level-6-23/ Mimic points out the wisdom of this to Yuan-Tiffany, since they don't want to kill each other.]]
* In TwoKinds [[NoNameGiven one of the main character's old friends]] is a bit biased against [[FantasticRacism Keidran]]. However when the rest of their party is incapacitated by an assassin attack, he has to [[http://twokinds.keenspot.com/archive.php?p=689 put aside some old grudges.]]
* In ''Webcomic/{{Snowflame}}'', Snowflame and his {{Hero Antagonist}}s have to work together to bail out Arkham Asylum after it is flooded with fear gas.
* In ''Webcomic/CaptainSNES'', Golbez agrees to team up with Samus Aran against Eggplant Wizard and the Monkeyspank viral AI, mainly because he knows he doesn't know enough.
* ''Webcomic/MenageA3'': The trope is briefly but eloquently demonstrated by [[http://www.ma3comic.com/strips-ma3/when_time_comes_to_play Yuki and Sonya in this strip.]] They can't stand each other, but Angel just made the mistake of challenging Yuki's ego, Sonya's competitiveness, and the woman they both love.
* In ''Webcomics/GuildedAge'', when [[spoiler:the beast the cultists let into the world]] attacks, the Peacemakers and the World's Rebellion champions agree to work together to fight it. Neither side is particularly happy about it, but both agree that the threat to innocent life is too great for them to put their own conflict before stopping it.
* ''Webcomic/{{Consolers}}'': Nintendo, Sony, and Microsoft fight about everything except their shared hatred of Apple, a threat to their collective business.
[[/folder]]

[[folder:Web Original]]
* Common practice in ''Literature/{{Worm}}'', where both superheroes and rivaling super-villains will gang up on anyone causing enough trouble or breaking the unwritten rules, such as attacking a cape's family.
--> "Word gets around, and the cape community goes after the fucker. Protecting the status quo, keeping the game afloat. Bitter enemies call a truce, everyone bands together, favors get called in and everyone does their damndest to put the asshole down."[softreturn]
** And when [[EldritchAbomination Endbringers]] attack, virtually every parahuman available will come together.
--> "This is why we are tolerated, why society allows and accounts for the capes that walk the streets and fight in its towns. Because we are needed for situations like this."
* In ''Machinima/CultOfPersonality'', the oWn is trying to wipe out the RED and BLU corperations, and a band of mercenaries from both sides have to fight together to push oWn back.
* ''Machinima/Supermarioglitchy4sSuperMario64Bloopers'': If there is a bigger threat in a video involving [=SMG3=], he will join the good guys to take out the threat.
* In ''Script/MayXnocens'' July and Borne are only enemies because of the [[WellIntentionedExtremist questionable things]] July does to keep [[SealedEvilInACan Idius March]] from being released. Once Idius March is released this becomes a moot point and they team up.
* In ''Literature/ChronoHustle'' Jack is running around the timeline, and Melinda has been assigned to capture him, but Jack doesn't want to be locked up, since they can't send him back to his own time. But then it turns out that there's some big conspiracy going on, and they end up working together.
* When [[WhateleyUniverse Whateley Academy]] is attacked by a massive invading army, the usually bickering students drop everything to drive them off (though some of the Ultraviolents kept a few for the sake of... entertainment).
** A key part of the Whateley Charter is that anyone, charter signatory or otherwise, who attacks any student's family as a way of getting to said student is to be treated as fair game by the signatories for anything up to and including [[AscendedMeme orbital bombardment]]. Generally, those who ''have'' tried this in the past didn't survive long - this is one situation where the superheroes won't even try to restraint the supervillains.
* ''Wiki/SCPFoundation'', [[Characters/SCPFoundation Characters/SCPFoundation]], [[http://www.scp-wiki.net/scp-2069 SCP-2069 ("AEGIS")]]. In an AlternateUniverse, the SCP Foundation and GOC (Global Occult Coalition) are forced to team up to fight an AlienInvasion of the Earth.
[[/folder]]

[[folder:Web Video]]
* ''Series/DoctorWho TheAbridgedSeries'' lampshades it in part two of ''Logopolis Abridged.''
-->'''Master''': You know, Doctor, I believe TV Tropes calls this situation "EnemyMine". It seems we must join forces to face this common threat.
-->'''Doctor''': -sigh- [[YaoiFangirl The fangirls]] [[FoeYay are going to have a field day with this...]]
* About halfway through the play-through of the Bowser's Enchanted Inferno episode of LetsPlay/MarioPartyTV, the other three players realize that Steeler has all three of the bonus stars, and team up against him in minigames. Steeler did not approve.
* WebVideo/ObscurusLupa talks about this in one of her reviews in relation to the gay marriage debate. She notes that, whatever your views on the subject, it's pretty likely that both sides will be united in finding ''Film/BenAndArthur'' offensive.
[[/folder]]

[[folder:Western Animation]]
* ''WesternAnimation/DextersLaboratory'' episode "Let's Save The World You Jerk!"; Dexter and his rival Mandark are forced to team up to stop a barrage of asteroids from impacting and destroying the Earth. Unfortunately, their egos prevent them from cooperating, and they spend so much time fighting that the Earth ends up destroyed, with the two of them arguing over whose fault it was. Good thing for NegativeContinuity!
* In ''Franchise/TransformersGeneration1'' it's not unusual to see the Autobots and Decepticons (or {{exp|y}}ies of them) joining forces to take on a greater threat. It just takes a ''very'' large threat to make them do it. Usually [[PlanetEater Unicron]], but not always.
** In "The Insecticon Syndrome", Megatron and Optimus Prime fight together against the out-of-control Insecticons. Watching Optimus grab up Megatron's semi-conscious body and force-fold him into gun mode is [[FoeYay interesting]].
** In "Countdown to Extinction", it's Megatron and Optimus Prime cooperating again to stop [[TheStarscream Starscream's]] DoomsdayDevice. Watching Optimus worry over the damage Megatron is taking to unbolt the device is [[FoeYay fascinating]].
** In "Nightmare Planet", Springer and Razorclaw team up to slay a dragon. Razorclaw was planning to sit back and watch Springer get killed, but a princess bribed him with gold and pointed out that the dragon would most likely kill everybody.
** In ''WesternAnimation/TransformersAnimated'', during the second season finale, the Autobots and Decepticons' latest battle is interrupted by Starscream and his clones. The Autobots and Decepticons end up fighting the same enemy, and at one point Optimus and Megatron have a BackToBackBadasses moment... only for Megatron to grab Optimus and use him as a living shield. The clones eventually turn on Starscream later, join Megatron, and everyone is back to square one.
** In ''WesternAnimation/BeastMachines'', the Maximals join forces with the surviving Vehicons to survive when Savage appears.
** Earlier, in ''WesternAnimation/BeastWars'', this happened a ton between the Maximals and the Predacons, always during story arcs where the Vok, the godlike beings using Earth as their own Petri dish, become active again. For example:
*** The entire final arc of the first season kicks off with Megatron attempting to form a truce with the Maximals when it becomes apparent that the Vok are a much greater threat to both of them than each other.
*** In season two, when an alien ship appears that [[PutOnABus put Tigatron and Airazor on a long bus ride]], the two factions team up to try to break into it, but all bets are off when Megatron gets control of the ship and all its power. Though [[TheStarscream Tarantulas]] does team up with the maximals in order to prevent Megatron from using the Vok technology to leave Earth.
** ''WesternAnimation/BeastWars'' also had Dinobot's alliance with the maximals, at least as far as he was concerned. Optimus considered him a welcome member of the team.
-->'''Dinobot:''' I am Predacon, despite our alliance. When we return to Cybertron, my fate will be the same as Megatron's. Perhaps even worse.
-->'''Optimus:''' I won't let that happen. You're a Maximal now.
-->'''Dinobot:''' What makes you think I ''want'' to be?
** ''Anime/TransformersArmada'' is ''technically'' an anime, but whatever. In any case, its very ''title'' refers to the Autobot-Decepticon alliance formed in the final episodes to combat Unicron.
** ''WesternAnimation/TransformersPrime''. The Autobots temporarily team up with Megatron to stop Unicron from awakening.
* ''WesternAnimation/JusticeLeague'':
** In "The Return". ComicBook/LexLuthor is forced to work with the League to stop AMAZO, an android he himself had loosed on them in an earlier episode, from killing him. This applies to the League more, as AMAZO isn't out to do anything else not in his way (he moved Oa to another dimension because it was easier than fighting, and fought back against the League because they attacked ''him''), but he ''is'' after Luthor, who deceived and manipulated him. The League figures that the android will kill Luthor (at this moment in the series, in a HeelFaceTurn), so THEY decide to help HIM. Part of it was because [[ItsPersonal it was personal]] to GL John Stewart, as they didn't know he just moved Oa. They saw him approach the planet, give off a flash, and then it was ''gone''.
** Luthor and the entire Legion of Doom were forced to help the Justice League defend Earth from invasion by Apokolips. [[spoiler:''Luthor'' was the one who did Darkseid in.]] It was a collective decision of [[TheOnlyOneAllowedToDefeatYou "the only one allowed to take over the planet"]].
** Franchise/WonderWoman and Hades against Felix Faust although this wasn't by choice. She was ordered to reinstate Hades by the Gods, and when she still had some reluctance, it ended when Hermes pointed out how Faust was indirectly harming Wonder Woman's magical friends by usurping Hades' post.
** The episode with the Justice Lords. Luthor hilariously teams up with Good Superman ''just for the pleasure of zapping a Superman, '''any Superman''', with a Kryptonite laser gun.''
---> '''Good Superman:''' Go for it.
---> '''Luthor:''' Oh ''yes''.
** Darkseid asked the League for help when Brainiac attacked Apokolips in "Twilight". Over Superman's protests, the League agreed. [[spoiler:Supes' suspicion was vindicated, since the entire plot was a ploy by Darkseid to hand over Superman to Brainiac in exchange for Apokolips' safety. And ''that'' turned out to be an even bigger ploy to grant Darkseid access to Brainiac's systems so he could take control of Brainiac and use its processing power to obtain the Anti-Life Equation.]]
* ''WesternAnimation/CodeLyoko'':
** In "Marabounta", Jérémie's newest attempt to destroy XANA goes haywire and threatens to destroy Lyoko itself. XANA sends monsters to help the good guys destroy the threat. When the combined team is victorious, the heroes expect the monsters to immediately turn on them. Instead, the monsters bow and then leave without incident. (Jérémie does warn everybody that this truce was clearly temporary.)
** In the following episode, "Common Interest", Jérémie and XANA team up to save Lyoko and Aelita when the uranium battery that powers the Supercomputer starts dying. This time however, XANA does strike back immediately after the teamwork is through.
* In the animated TV show of ''Literature/TheNeverendingStory'', the main character teams up with the evil female character, who even saves him at one point.
* ''WesternAnimation/AvatarTheLastAirbender''
** A subversion occur in "[[Recap/AvatarTheLastAirbenderTheBlueSpirit The Blue Spirit]]", when Zuko ([[SecretIdentity in disguise]]) rescues Aang from Zhao because Zuko [[TheOnlyOneAllowedToDefeatYou needs to be the one to capture him]]. Hence his 'rescue' was an attempt to capture him.
** In "The Chase", [[spoiler:the gang inadvertently work with Zuko and Iroh to corner Azula. This gets broken when Azula attacks Iroh while he's distracted.]]
** When Zuko [[spoiler: has a HeelFaceTurn and joins the Gaang. Included here because, while Zuko truly wants to switch sides, the Gaang (especially Katara) still views him as an enemy for some time. Nevertheless, although the only reason the Gaang agree to join up with him is because Aang needs a firebending teacher, the two of them eventually decide to put their differences aside when they discover that they have more in common than they think, so it's not long before they're working smoothly together to take down the BigBad, becoming literal FireForgedFriends in the process.]]
** Iroh asks for the Gaang's help to save Zuko, while the Gaang needs help to save Katara. This is a very mild example since Iroh was practically on friendly terms with Toph already and Iroh was never that much of an enemy in any meaning of the word, but Aang and Sokka are suspicious at first.
** ''WesternAnimation/TheLegendOfKorra'' has an uneasy alliance between Korra's team and Varrick. They don't trust him, since Varrick was manipulating the Water Tribe Civil War from the start, but both parties do hate Unalaq. After all, success against Unalaq did depend on whatever Varrick could contribute, even if it was going to harm them.
** This happens again in Book 4, when [[spoiler:Zaheer, BigBad of the previous book, helps Korra overcome her trauma at his hands so she can defeat Kuvira, who is everything Zaheer hates.]] By the time of the finale Kuvira had a [[spoiler:HumongousMecha]], making the situation so dire that Lin had to release [[spoiler:Hiroshi Sato]] to help them defeat it. Sadly, [[spoiler:Sato doesn't last]].
* The title character of ''WesternAnimation/DarkwingDuck'' regularly teams up with his nominal enemies against more powerful foes.
** Electrical supervillain Megavolt has joined forces with Darkwing several times.
*** When the two fight on the same side against an enemy that threatened to destroy St. Canard, Gosalyn asks Megavolt why he's helping out. Megavolt explains that if the BigBad destroys the city, there'll be nothing left for him to rob.
*** After Megavolt's Electrolyzer malfunctions and sends him and Darkwing into [[RealWorldEpisode the human world]] in [[Recap/DarkwingDuckS1E40TwitchingChannels "Twitching Channels"]], they are forced to team up to find a way to return to their world (though Megavolt tries to double cross Darkwing at the last second).
*** Megavolt teams up with Darkwing in order to stop the Gosalyn-shaped representations of radio, light, and heat waves from wreaking havoc upon the city. His excuse for the team up this time? The physical representations of the electromagnetic spectrum hurt his feelings. (Darkwing was willing to work with him because he was an expert in the field - well, [[BunnyEarsLawyer the best one that was available]], at least.)
** Darkwing Duck teams up with IneffectualSympatheticVillain Bushroot a few times.
*** One episode features the crimefighter and the duck/plant hybrid fighting together against an invasion of evil cabbages from outer space. Bushroot justifies joining forces with Darkwing as follows:
---->'''Bushroot:''' "Hey, I may be a mutant plant-duck, sure, but I'm an ''Earth'' mutant plant-duck!"
*** Darkwing has to recruit Bushroot's help in [[Recap/DarkwingDuckS1E55SlimeOkayYoureOkay "Slime Okay, You're Okay"]] after the latter's [=IQ2U=] potion accidentally creates a giant sentient patch of lawn that threatened to devour them both; Bushroot launches Darkwing past the lawn, where he is able to summon a flock of sheep to devour it. As a gesture of gratitude, Darkwing lets Bushroot go free at the end of the episode rather than arresting him for breaking into the botanic gardens to steal ingredients for the [=IQ2U=] potion.
** Supervillain prankster Quackerjack allies himself with Darkwing in [[Recap/DarkwingDuckS1E54TheHauntingOfMrBananaBrain "The Haunting of Mr. Banana Brain"]], when [[MonsterClown Paddywack]] possesses [[CompanionCube Mr. Banana Brain]] and then traps both of them in a pocket dimension to be the permanent objects of his pranks. (That guy just wasn't funny.)
** In several episodes, Darkwing teams up with Megavolt, Bushroot, ''and'' Quackerjack, plus their fellow Fearsome Five member the Liquidator, invariably when they have been double-crossed by their leader, Negaduck.
*** Negaduck [[AllYourPowersCombined steals Megavolt's control over electricity, the Liquidator's control over water, and Bushroot's control over plant life]] with a magical gem in [[Recap/DarkwingDuckS1E60JailBird "Jail Bird"]]. (Quackerjack had no power to steal, other than his wackiness. [[WhatKindOfLamePowerIsHeartAnyway That's your cue, fellow tropers!]]) The now powerless supervillains reason that Negaduck has also stolen their weaknesses, and they recruit Darkwing to help exploit them to get their powers back and stop Negaduck from destroying St. Canard.
*** The four of them did it the second time the Fearsome Five worked as a team, ''again'' after Negaduck double-crossed them. (Apparently, they didn't learn the first time.)
* ''WesternAnimation/DungeonsAndDragons'':
** There were several times where the heroes called a truce with Venger for mutual benefit; for example, "Valley of the Unicorns", one of Venger's servants [[TheStarscream enacted a plan to take over]], so Presto decided the best bet was to tell Venger about it. In "The Box", Venger reluctantly allies with them in order to survive after [[GreaterScopeVillain his demonic master]] is freed.
** Also, the kids form an uneasy deal with Tiamat to fight Venger in "The Dragon's Graveyard".
* ''WesternAnimation/TeenTitans'':
** Robin must reluctantly team up with Slade to save Raven in "The End (Part 2). Slade uses this time trying to annoy Robin as much as possible, naturally. Later Slade helps them out with Trigon with his extremely badass antler cutting fiery ax. (He didn't ''have'' to come back, but he wanted to, because as he put it, "I'm ''nobody's'' servant.")
** Also the Titans team up with Gizmo to rescue Cyborg. Actually, Gizmo has no choice in the matter as Raven threatens to turn into some demon-monster and devour him if he doesn't. (Robin figured that Gizmo was the only one who was knowledgable enough to repair Cyborg, although a lot of fans did remember [[PutOnABus Fixit]] and thought that he might have been a better choice...)
** Robin also teams up with Red X in "X" to stop the theft of a dangerous substance. While the last time we saw Red X, [[spoiler: ''he was Robin in disguise'']] this time the [[spoiler:the Red X suit was stolen by [[RiddleForTheAges an unknown person]].]])
* A similar plotline occurred in ''WesternAnimation/TheBatman'', when the villainous residents of Arkham Asylum, freed by an alien invasion, join the fight against the aliens, with the Joker angrily stating that causing mayhem in Gotham is '''his''' job. He goes so far as to gleefully proclaim that the whole world has gone mad after seeing Gordon and Freeze protect each other's backs.
* ''WesternAnimation/InvaderZim'':
** Despite his declaration of "just this once" (quote at top of main page), Zim and Dib of have teamed up at least three times against various crises.
** Notable episodes: "Bolognius Maximus", "Hamstergeddon", "Halloween Spectacular of Spooky Doom", and "Tak: The Hideous New Girl".
** Subverted in "Planet Jackers": Zim reluctantly tries to form an alliance with Dib, as he requires Dib's telescope (Zim's has been broken). Dib refuses to believe Zim has (somewhat) good intentions and kicks Zim out of his house without allowing time for an explanation.
** Subverted (and lampshaded) in "Walk for Your Lives": Zim forces an alliance on Dib, who is the only way to stop a massive slow-motion explosion. Dib (who's also in slow-motion) gets fired out of a cannon into an explosion, causing it to speed back up and finish already. Only an alliance in the broadest of terms.
** There's another subversion in "Gaz: Taster of Pork," when Dib, evidently at the end of his rope, winds up going to Zim for help. He cites their partnership in "Bolognous Maximus" (which is an odd ContinuityNod to an episode that ended on a SnapBack), but Zim just [[WorldOfHam screams "YOU'RE MAKING IT UP!" at the top of his lungs at him]].
** Zim also provides Dib assistance momentarily in "The Most Horrible Xmas Ever" in order to get rid of/save himself from the Santa suit, but a minute later Zim convinces literally ''everyone'' to beat up Dib on grounds that he destroyed their precious Santa. And then the Santa suit ended up becoming a monster that returns to earth every year...
* ''WesternAnimation/CodenameKidsNextDoor'':
** In "Operation: I.T." the Delightful Children sell Father out and help the KND, because [[EvenEvilHasStandards even they can't stand broccoli.]]
** There was "Operation: M.U.N.C.H.I.E.S." After Sector V spent the whole story fighting nearly ever villain in the series over the last box of cereal in a supermarket, Knightbrace grabs it, but intends to destroy it, not eat it. So the heroes call a truce with the other villains to get from him. (And then all of them are able to share it at the end, making it a happy ending for everyone ''except'' Knightbrace.)
** ''WesternAnimation/OperationZERO'' had Numbuh 1 and [[spoiler:his father, Numbuh 0]], team up with Father and the Delightful Children from Down the Lane [[spoiler:a.k.a. Sector Z]] to stop [[BigBad Grandfather]]. [[spoiler:The alliance quickly peters out when Father loses motivation (despite being implied to be ''stronger'' than Grandfather) and [[ScrewThisImOuttaHere buggers off to go binge on ice cream]], while Sector Z is forcibly transformed back into their Delightful forms and attack Nigel]].
* ''WesternAnimation/DannyPhantom''
** Danny and his ghost hunting rival/enemy Valerie work together to outdo Skulker once they stop trying to torment one another. Being [[ChainedHeat handcuffed]] together didn't help matters.
** In the first movie, "Reign Storm", Danny, Vlad, and Valerie had to team up to try and take down the much greater threat that was Pariah Dark. In fact every enemy ghost came to help out during the final battle. (Except Dark Danny, [[SealedEvilInACan for obvious]] [[FutureMeScaresMe reasons]].)During the final battle:
--->'''Skulker''': Now, go! Defeat him, so I will be free to hunt you another day!
--->'''Danny''': (to Ember) Guy really knows how to motivate you...
** Danny teamed up with the rest of his foes to break out of Walker's prison in "Prisoners of Love."
** Danny and every single ghost in existence teaming up to turn the Earth intangible in "Phantom Planet." Wow, he ''does'' do this a lot!
** In the ChristmasEpisode, when the Ghostwriter tried to teach Danny a lesson, all other ghosts Danny met in the episode agreed to help him because the Ghostwriter broke the Christmas truce.
** In "Livin' Large", the [[TheMenInBlack Guys in White]] tried to blow up the Ghost Zone, unaware that it'd destroy Earth as well, and Danny teamed up with some of his ghostly enemies to stop them.
** Danny and Valerie teamed up again in "D-Stabilized" to defeat Vlad and [[spoiler: save Dani]]. [[spoiler: Bonus points for Valerie discovering Vlad's secret identity at the end!]]
* ''WesternAnimation/TheRaccoons'' episode "The Intruders" has the bad guy Cyril Sneer working together with the titular raccoons and their friends in order to save his own son and one of the raccoons who got trapped in his supersafe vault.
* In ''WesternAnimation/ThePiratesOfDarkWater'' episode "The Game Players of Undar", frog-like creatures effortlessly capture both the main hero and the main villain, handcuff them together, and force them to work together to win a dangerous game on an island for their own amusement.
* ''WesternAnimation/BatmanTheBraveAndTheBold'':
** In the episode "Game Over For Owlman", Batman is forced to team up with [[spoiler:his arch nemesis, The Joker]] after the rest of the heroes of the series become convinced he has become a bad guy thanks to the machinations of his EvilTwin Owlman.
** And again with Two-Face in the beginning of "The Fate of Equinox", after his hired henchmen go against his decision to spare Batman.
* Commander X-2 did this with WesternAnimation/DuckDodgers and his Cadet on occasion -- especially when his Queen was in direct danger. Awwwww.
* ''WesternAnimation/ThePowerpuffGirls'':
** One episode had them needing Mojo Jojo's help to beat this huge alien thing that was so evil even Mojo considered it his superior.
** Another episode had the Gangreen Gang helping the girls to defeat Sedusa after she abandons them when [[YouHaveOutlivedYourUsefulness she no longer needed them for her plan]].
* ''WesternAnimation/AdventuresOfTheGummiBears''
** In one episode ("Just a tad smarter"), Toadie's cousin Tadpole takes over Castle Drekmore, kicks Duke Igthorn out, and orders the ogres to destroy all the gummiberry bushes. Neither Igthorn nor the Gummis want the bushes destroyed, so they reluctantly team up to get rid of Tadpole.
** In another episode("For a few sovereigns more"), Duke Igthorn hires a bounty hunter to catch a Gummi Bear. When the hunter returns with Cubbi Gummi but Igthorn refuses to pay, he and Cubbi are tossed into a dungeon cell, and have to work together to escape. That episode was a ChainedHeat, as well.
* ''WesternAnimation/TheFairlyOddParents'':
** [[SadistTeacher Mr. Crocker]] teams up with Timmy to get rid of the new substitute in one episode.
--> '''Mr. Crocker''': [[LampshadeHanging Are you aware of the phrase "The enemy of my enemy is my friend."?]]
** In the "Wishology" trilogy, all of Timmy's friends and allies except for Mark are captured. Needing help, he recruits [[AxCrazy Vicky]], [[EvilTeacher Crocker]], and [[GalacticConqueror Dark Laser]] to battle the Darkness. He needs to offer them something: 20 dollars, a look at his fairies, and an opportunity to destroy him when it's over, respectively.
* Happened several times on ''WesternAnimation/{{Gargoyles}}''. David Xanatos is such a MagnificentBastard that the Manhattan Clan always suspected they were being used. Occasionally they were wrong.
* ''WesternAnimation/TheSimpsons'':
** Bart and Lisa from teamed up with Sideshow Bob in "Brother From Another Series" to stop Bob's brother, Cecil, from blowing up the Springfield Dam to destroy the evidence that he cut back on construction to embezzle funds.
** While not quite an ''enemy mine'' per se, they also had some help from Sideshow Bob in identifying the real culprit of Homer's kidnapping in "Wedding for Disaster" [[spoiler: it was Patty and Selma Bouvier, the latter of whom was ironically a former near-victim of Sideshow Bob.]]
* ''WesternAnimation/StarWarsTheCloneWars''
** In the finale of Season 4 [[spoiler: Obi-Wan and Ventress team-up against Savage and Maul.]]
** This became the first of a couple of [[EnemyMine Enemy Mines]] Obi-Wan had against [[spoiler: Maul]]. In Season 5 he teams up with the pirate Hondo Ohnaka (although his status as an enemy is debatable), and then later the Death Watch member Bo-Katan, who had gone against [[spoiler: Maul's take-over of the Death Watch and Mandalore. Bo-Katan even Lampshades this when she does an earlier EnemyMine with her sister, Satine.]]
--->'''Bo-Katan''': The enemy of my enemy is my friend.
** Ahsoka and a couple of Jedi younglings also teamed up with Hondo and his pirates in order to fight General Grievous and escape Florrum.
* ''Franchise/GIJoe'':
** In the anti-drug episode of the Joes and the Cobras recognize a common enemy in the drug kingpin Headman and enter an awkward alliance to take him out.
** They also team up against "The Gamesmaster" after he captures members from both sides.
* Happens often in the ''WesternAnimation/{{Ben 10}}'' franchise. Ben's teamed up with [[EvilCounterpart Kevin]], a [[FantasticRacism Highbreed]], [[ManipulativeBastard Darkstar]], [[DarkMagicalGirl Charmcaster]], and [[ArchEnemy Vilgax.]]
* Buzz Lightyear and the Evil Emperor Zurg work together to beat aliens that intend to conquer the entire galaxy, including Zurg's home, in an episode of ''WesternAnimation/BuzzLightyearOfStarCommand''.
* In the ''WesternAnimation/{{WITCH}}'' season two episode "W is for Witch", Will decides to recruit season one BigBad Prince Phobos and his crony Cedric in subduing Nerissa. The end result? The start of a GambitPileup that doesn't end until the series finale!
* ''WesternAnimation/WinxClub'' got in on this as well. Season 1 saw the Cloud Tower student witches moving in with the fairies at Alfea to fight the Trix, and one of the major complaints about this arc is that they're nowhere to be seen during the battles. Season 2 features this trope again at CT, and although Musa and Layla are briefly shown fighting the Trix together with the student witches, they're again nowhere to be seen afterwards. Although the events of S1 haven't been completely forgotten by the time of the S2 arc [[note]]in the original at least, as the Winx specifically mention this while heading to CT[[/note]], the witches still dread teaming up with the fairies.
* ''WesternAnimation/HeManAndTheMastersOfTheUniverse1983''
** In the episode "The Witch and the Warrior", Teela and Evil-Lyn are forced to work together when they are stranded in the desert and Evil-Lyn has been BroughtDownToNormal. One of the most popular episodes due to all the [[HoYay Les Yay]].
** There's also the episode with Evil Seed, a plant monster who appears and starts beating down heroes and villains alike. He-Man, The Sorceress, and after ''much'' reluctance, Skeletor team up to take the guy down.
* One episode of ''WesternAnimation/SheRaPrincessOfPower'' featured She-Ra and Hordak accidentally sent to another dimension and having to join forces to return.
* The fifth season of the 2003 ''WesternAnimation/{{Teenage Mutant Ninja Turtles|2003}}'' series features the Turtles (along with the Ninja Tribunal's human accolades and the Justice Force) [[spoiler: teaming up with Karai, Hun, and Bishop to fight the Tengu Shredder.]]
** During the "Return to New York" arc in season 1, when Baxter Stockman [[TheDogBitesBack betrayed the Shredder]] and attacked both him and the Turtles, threatening everyone. The Turtles and Shredder briefly join forces to defeat him before resuming their battle.
* [[TeenageMutantNinjaTurtles1987 80's cartoon as well]].
** When the "Killer Pizza" monsters go berserk, the Turtles and Shredder have to team up to keep the creatures from killing all of them. It's even given a lampshade by Leonardo and Donatello.
** Also happens in the "Turtles Forever" film. [[spoiler: Krang and '87 Shredder]] join forces with the '87 and '03 Turtles at the end to stop the Utrom Shredder from destroying the multiverse.
* Done twice in TMNT 2012, once in "Baxter's Gambit" when Xever [[spoiler: saves Raphael from the giant fan, saying that only he gets to kill the turtle]] and again in Annihilation!Earth, when [[spoiler: Splinter and Shredder work together to stop the Triceratons, only for Shredder to turn and literally stab Splinter in the back.]]
* ''WesternAnimation/KimPossible'':
** In the GrandFinale, the title heroine and her partner Ron team up with their longtime foes Drakken and Shego to save the planet from an AlienInvasion. Ironically, Drakken (who never once succeeded in his career as a MadScientist, this even being {{lampshade|Hanging}}d by his rival Dementor), came up with the plan to use his newly acquired plant powers to stop the [[TripodTerror alien war machines]].
** There were previous instances of Kim and Shego joining forces against a common enemy: Kim enlisted Shego's help against an old Team Go enemy in "Go Team Go", and Shego [[TheOnlyOneAllowedToDefeatYou stopped Drakken's new sidekick from beating Kim]] in "Mad Dogs and Aliens".
* ''WesternAnimation/ReBoot''
** This happens in the second season finale. Bob is forced to team up with Megabyte and Hexadecimal to stop the Web from destroying Mainframe. However Megabyte, being the MagnificentBastard that he is, takes advantage of the situation to betray Bob and strand him in the Web.
** However, an earlier episode has Megabyte actually honoring his commitment. Megabyte's goons steal game energy in an attempt to break into the Archives. Unfortunately for Megabyte, he gets trapped in the game that they steal the energy from. When the User loads a new game and it collides with the current one, Megabyte gets trapped sinking into quicksand while being shot at by a T-Rex with a machine gun. After begging Bob for help, Bob decides to save him. Later in the same episode, Megabyte kidnaps Enzo. After the gateway command is he stole is destroyed, Bob reminds him how he saved him in the game he lets Bob save Enzo without a fight. As they're leaving, Megabyte says, "Now we're even, guardian. Now we're even."
* The main plot of ''Disney/{{Mulan}} II'' required the protagonists, under the Emperor's orders, to travel over to Qui-Gong to forge an alliance with the kingdom in what is essentially an enemy mine gambit to defend China from the Mongolians' imminent invasion.
* An episode of ''WesternAnimation/JimmyTwoShoes'' had Lucius team up with Jimmy to defeat [[ScrewLearningIHavePhlebotinum Genius Beezy]]. Also Heinous vs Clown was made of Enemy Mine.
* The 90s ''WesternAnimation/{{X-Men}}'' animated series did this with ''every'' appearance of Magneto after his introduction. [[FriendlyEnemy Every.]] [[EvenEvilHasStandards Single.]] [[AffablyEvil Appearance.]] Except for one time when he helped Apocalypse capture a psychic-empowered mutant for his master plan. It got to the point where, during the GrandFinale, he was considered an honorary X-Man, and shown as part of the team in the final shot of the series.
* In the ''WesternAnimation/XMenEvolution'' episode "Survival of the Fittest" they worked with the Brotherhood to stop TheJuggernaut. Then at the end of season 2 the X-Men and Brotherhood teamed up against first Magneto's team and then the Sentinel. The arc plot for season 3 involved everyone trying to stop the [[SealedEvilInACan unsealing]] of Apocalypse, and season 4 ended with Apocalypse and his four mind-controlled Horsemen against the X-Men, the Brotherhood, Magneto's team, and the now-SHIELD-controlled Sentinels.
* ''WesternAnimation/TheSpectacularSpiderMan'':
** In one episode, Spidey made a temporary alliance with [[TheBrute the Rhino]] to destroy a specs program which gave the owner the instructions on how to make more Rhino-armored supervillains. The original Rhino wasn't too happy about that, so after battling [[TheDragon Hammerhead]] and ComicBook/SilverSable for it, Spidey offered a team-up. After it was destroyed, however, things went back to normal...
** Spider-Man also made an unofficial alliance with [[BigBad Tombstone]] to take down their mutual foe, [[MagnificentBastard the Green Goblin]].
* ''WesternAnimation/FamilyGuy'':
** A non-combat version occurs on when [[AuthorAvatar Brian]] tells [[TheFundamentalist Francis]] that they have to work together to stop Peter's new religion.
** There's also their ShowWithinAShow "Bigger Jaws" which parodies the concept, by having boaters fight off a shark until [[AlwaysABiggerFish a bigger shark comes along]], scaring them both.
-->"''[[LampshadeHanging Oh my god, now we have a common enemy, we have to work together]].''"
** Another variation had [[ButtMonkey Meg]] and [[AlphaBitch Connie]] team up to make take down a newly-popular Chris.
* ''WesternAnimation/MegasXLR'' did this when Coop and Gorath got trapped in a MirrorUniverse and were captured by Mirror Jamie. Then Mirror Jamie joins the EnemyMine when Mirror Coop shows up to kick their asses. This one ''almost'' became permanent after Coop and Gorath succeed in defeating Mirror Coop, but then Megas trips and ends up destroying Gorath's entire army. That ends the team-up.
* ''WesternAnimation/TheNewAdventuresOfSuperman'' episode "Luminians on the Loose". After ComicBook/LexLuthor brings the title creatures to Earth, they turn on him and try to kill him. Luthor is forced to team up with Superman to defeat them.
* ''WesternAnimation/SouthPark:''
** Played with when [[SociopathicHero the Coon]] asks for [[IneffectualSympatheticVillain Professor Chaos]]' help with Mysterion, which is actually more of a VillainTeamUp.
** In "It's A Jersey Thing" Randy decides to turn to ''[[RefugeInAudacity Al Qaeda]]'' for help.
-->'''Randy''': Our country's getting back to normal, and we owe it all to OsamaBinLaden. On this day let us all remember that no people on this earth are really enemies, only folks with differences.
-->[Paratrooper shoots Bin Laden].
** In "Goth Kids 3: Dawn of the Poseurs" the {{Goth}}s and their [[FandomRivalry sworn enemies]], the [[PerkyGoth Vampire]] kids, team up to defend the world from their greatest foe: [[EmoTeen emos]].
* ''WesternAnimation/{{Hurricanes}}'' episode "Target: Winston" had Winston Honeychurch fearing for his life. [[ActionGirl Amanda Carey]] had, at first, believed [[BigBad Stavros Garkos]], the series' main villain, was behind this and, along with Stats, went to his hotel room to spy on him but were caught. Wanting to know what Amanda was up to when she accused him, the [[NotMeThisTime this time innocent]] Garkos told his main thugs, Wyn and Genghis, to help her.
* ''WesternAnimation/XiaolinShowdown'':
** One episode has the CardCarryingVillain Jack Spicer save the Xiaolin monks from the re-humanized evil sorceress Wuya. He then explains that he's willing to provide any help they need in order to defeat Wuya, since he sees her as a threat to his ''own'' plans of world domination.
** In the episode "Dangerous Minds" of season 2, Jack ends up accidentally freeing ancient spider creatures that are described as "neither good nor evil, they are simply consumers". They will literally eat everything, the world itself until there is nothing left. The villains don't like this as they want to rule the world not destroy it. [[TheHero Omi]] and [[MagnificentBastard Chase Young]] team up to stop the spiders and save the world. Chase even [[ExploitedTrope uses this as part of his plan to convince Omi to join his side.]]
* ''WesternAnimation/BatmanTheAnimatedSeries'':
** In "The Trial", which featured the city's new District Attorney blaming Batman for all the superpowered criminals in Gotham City. This eventually leads to the DA being kidnapped by the villains and Batman being captured while trying to rescue her. The villains then put Batman on trial for ruining their lives and turning them into criminals, and they make the DA serve as Batman's defense lawyer. The DA demolishes the villains' claims one by one, pointing out that they were all responsible for their own problems and would have become villains anyway; the only thing Batman ''really'' influenced them to do was wear costumes. The villains are forced to acquit Batman, but they decide to kill him and the DA anyway ForTheEvulz. Now that the DA has done her job, it's time for Batman to do his...
** Then there was the episode "Harlequinade", where Batman recruited Harley Quinn's help to find the Joker when he stole a nuclear weapon (offering her parole as an incentive). Harley didn't quite manage to stand up to Mistuh Jay in this episode, but she came close. (She would eventually, later.)
* ''WesternAnimation/TheDreamstone''
** [[DefiedTrope Defied]] in the episode "The Statue Collection", when both sides get stranded on a desert island and Sgt Blob and Albert are antagonised by a sea monster, Frizz and Nug quickly assemble a war device to fend it off. Rufus and Amberley, convinced it's [[UnwantedAssistance doing more harm than good]] (and likely still pissed about them [[TakenForGranite turning Pildit into stone]]) knock the two out, leaving Albert to take care of the monster by himself.
** Played straighter in "The Dark Side", after the Urpneys capture the heroes, they are attacked by another monster. [[FriendToAllLivingThings The Dream Maker]] negotiates with it in return for the Urpneys releasing them (it's shrewdly implied the monster was [[SubvertedTrope really a docile friend that played tough to help scare the Urpneys away]] though).
** Another light example happens in "Return Of The Nightmare Stone" where Urpgor, after being rendered redundant by Zordrak's new stone, advises the Noops to throw it into the BottomlessPit.
* Shere Khan assisted Baloo in a few ''WesternAnimation/TaleSpin'' episodes. Also in "Stuck On You" where Don Karnage must make a truce with Baloo when they are accidentally glued to each other (and his crew create a mutiny).
* ''WesternAnimation/ThomasTheTankEngine'':
** The Troublesome Trucks from are known to play tricks on the engines from being the cause of their accidents to mercilessly make up jokes and songs about them, but they are times where they and the engines can be on the same side when dealing with a common foe. In "Special Attraction", they helped Percy deal with a disagreeable boat named Bulstrode and in "The World's Strongest Engine" when Thomas and Percy lampshaded at the end of said episode that they've learned that even troublesome trucks can do an engine a favor, especially if it's getting rid of an [[FantasticRacism prejudiced]], [[SmallNameBigEgo arrogant]] Diesel.
** The Diesel have always had a heated rivalry with "steamies", though there are times even the most prejudiced of both kind have ended up teaming up to solve a dilemma. This is the entire plot of "Calling All Engines" where both must work together to build Sodor's airport, which culminates in Thomas even having to get [[BigBad Diesel 10]] for help.
* ''WestrernAnimation/SpongeBobSquarePants'':
** Mr. Krabs and Plankton have teamed up on a number of occasions. The most notable being "''Best Frenemies''", where the two try to take down a restaurant more successful than either of theirs.
** Another example is "''Eeek, an Urchin!''", where Plankton helps the Krusty Krab crew settle a sea urchin infestation, because "he can't steal the formula with vermin running around".
* ''WesternAnimation/{{Recess}}'' had at least two instances where Randall ends up forging a truce. Not to mention the movie where Randall, Miss Finster and Principal Prickley team up with the kids against a villain that wants to create eternal winter
* In ''{{WesternAnimation/Motorcity}}'', "Red" resents Mike Chilton for leading the group that destroyed the home he supposedly lived in. He ends up joining forces with Kane for this reason, despite the fact it was really Kane who is responsible for the destruction of his Motorcity home.
* In ''WesternAnimation/StreetFighter'' episode "Strange Bedfellows" (for those who don't know, it's a former name of this trope), Guile and Bison teamed up against Akuma.
* Several ''WesternAnimation/TomAndJerry'' cartoons have the titular cat and mouse teaming up to get rid of an enemy, such as ''Dog Trouble'', ''Old Rockin' Chair Tom'' and ''Triplet Trouble''.
* * In one episode of ''WesternAnimation/TheRealGhostbusters'', a guy hates chickens so much, that he actually summons a demon to make [[DealWithTheDevil the standard bargain]] in exchange for ridding the Earth of them. Later, the demon is so humiliated at having to grant such a silly request (and is the laughing stock of the netherworld), he enlists the help of the Ghostbusters to void the contract. (He ''is'' somewhat threatening in the way he convinces them to listen, but it's still an alliance for mutual benefit, so it counts.)
* In ''WesternAnimation/StevenUniverse'', Peridot eventually teams up with the Crystal Gems to stop [[spoiler:The Cluster]], or else they all die. [[spoiler:She becomes an official member of the Crystal Gems after insulting Yellow Diamond to her face in Message Received for not wanting to stop The Cluster]].
* ''WesternAnimation/SonicBoom'' has this as a recurring theme in its episodes. A few examples include:
** In "[[SonicBoomS1E2CanAnEvilGeniusCrashOnYourCouchForAFewDays Can an Evil Genius Crash on Your Couch For a Few Days?]]", after Eggman's Obliterator Bot malfunctions and prepares to destroy his island fortress, Eggman is forced to team up with Sonic and his friends to stop it. Sonic initially refuses at first, until Eggman reveals that if his base is destroyed for real, he will have to stay with Sonic until it's repaired. Sonic decides to help him after all upon hearing that.
** In "Hedgehog Day", Eggman [[GroundhogDayLoop creates a time loop]] during a battle with Sonic and his friends, and [[FailureIsTheOnlyOption since this time loops resets any victory he has over them]], [[PragmaticVillainy he enlists their help in stopping the time loop]].
** The main premise of "The Curse of Buddy Buddy Temple" is that Sonic and Eggman are trapped in an ancient temple that forces them to work together in order to escape from it.
** In "Let's Play Musical Friends", Sonic and his friends assist Eggman into sending Orbot and Cubot into the "17-bit" dimension to reclaim his lair and his robots back from Nomanitus, who has overtaken them with a digital virus.
** In "[[Recap/SonicBoomS1E26EggmanUnplugged Eggman Unplugged]]", after Eggman gives up technology (save for Orbot and Cubot, mostly so they can pull his Eggmobile), the Lightning Bolt Society takes over his lair, and (inadvertently) unleashes his robots on the village. Towards the end of the episode, when he decides to start using technology again after Dave shuts off Orbot and Cubot, he teams up with Sonic and his friends to sneak into his lair and stop the Lightning Bolt society.
** In "Mayor Knuckles", Knuckles abuses his power as the temporary mayor by approving too many laws, one of which involves giving the sanitation engineers vacation time. Eggman [[PunchClockVillain isn't up to anything particularly evil in this episode]], as he just wants his trash picked up. Sonic agrees to help him stop Knuckles to get the village back to the way it was before.
** In "Next Top Villain", Dave the Intern captures Eggman and tries to destroy the village with his Octopus Bot. Sonic rescues Eggman, who assists in helping him get his Octopus Bot back from Dave.
* In ''WesternAnimation/TotalDramaPresentsTheRidonculousRace'' the Ice Dancers and the Police Cadets team up (along with the Daters) to work together against an alliance of the other remaining teams. It doesn't last long.
[[/folder]]

[[folder:Real Life]]
!!TropeNamer
* The proverb is of either ancient Arabic or Chinese origin, but the closest you're going to get to a {{Trope Namer|s}} is Creator/NiccoloMachiavelli, who coined this principle: the neighbour is the natural enemy; hence the neighbour to the neighbour is the natural ally.
* Another proverb, which provides the Alt Title for this trope: "War and politics make strange bedfellows." Usually quoted with either war or politics mentioned alone, as appropriate for the situation.

!!Business and Commerce
* Companies like Website/{{Google}} and Microsoft have always had their conflicts. But as soon as bills like SOPA showed their fangs? Suddenly, the ''[[UpToEleven entire internet]]'' was united to fight back. Whether the companies fight for freedom or money is unknown, but no one seemed to care anyway.
* Automotive example: Holden and Toyota teamed up to produce the Holden Commodore VR and the [[http://www.redbook.com.au/used-cars/Toyota/Lexcen/values-model-make.htm Toyota Lexcen]]. However, the Lexcen was not a [[MarketBasedTitle export model]], but solely an Australian version of the Commodore, but without the Commodore's big, brash, American V8 engine, instead only getting a Buick V6 engine. This was created so Toyota had a rival for the Ford Falcon (apparently the 1991-1995 Toyota Camry, incidentally, this was sold as a Holden too, the Holden Apollo being roughly the same size as a BMW 3-Series), a big car, and one of the Asia-Pacific region's biggest sellers. Needless to say, General Motors' (owners of Holden) alliance with Toyota ceased in 2005.
* The world of high-end electronics works in weird ways. Building a chip fab is eye-wateringly expensive and complicated, and thus there is a limited amount of enterprises in the world that can build advanced processors, memory and what have you. Also, high-level research is expensive and time-consuming, so the few really successful designs tend to stay dominant for a while and be licensed to everybody. As a result, strange collaborations spring up.
** Pentax and Sony have long been rivals in the budget-conscious [=DSLR=] market (the primary market being squarely dominated by Canon and Nikon), but from the K-x onward Pentax has stopped using its own sensors and uses Sony ones under license.
** For a long time Apple used Samsung-provided memory and screens, despite Samsung being their most dangerous rival on the market. This particular relationship ended sourly when Samsung proved more dangerous than at first thought, and Apple started a string of expensive legal proceedings against them. Samsung said "well, fuck that" and is no longer making much of anything for Apple.
** Apple and Samsung also have a common EnemyMine: Qualcomm (who produce system-on-chip, or [=SoC=], platforms for tablets and cellphones). The former needs them for cellular modems and the latter uses their chips for US versions of phones, even though they have their own [=SoC=].
* In the midst of a certain ugly and rather scandalous dispute between CBS and Time Warner Cable, TWC's biggest competitors voiced their support for TWC against CBS's underhanded and consumer-unfriendly anti-TWC tactics.

!!Crime
* Infamous American gangster "Lucky" Luciano bargained for his release from prison after claiming that he could protect American wharfs from saboteurs with gangster muscle. Some people suspect that it was actually Luciano's men, if anyone, who were causing the problems in the first place.
** Luciano also supposedly made available contacts in Sicily to military intelligence during the Italian campaign, a claim that he also later denied. Given that the Fascists intended to wipe the Mafia out, the claim has some credence. This also surfaced with the invasion of France, where the Corsican Mafia agreed to provide intelligence in return for the US overlooking their drug operations to American ports. This developed into the "French connection" of infamy, and the relationship between the Corsican Mafia and CIA later proved useful for using them as local "muscle" to bust the French Communist-run dockers union when they struck in Marseilles, preventing the US shipping needed military supplies over to help France hold down Vietnam ([[CaptainObvious not that it worked forever anyway]]).
* Gang bangers in small cities have been know to team up against police and non-local gangs moving in then go back to fighting each other again.

!!Entertainment
* Creator/GeorgeTakei attempted to reconcile the feud between ''Franchise/StarTrek'' and ''Franchise/StarWars'' {{Fan Boy}}s by encouraging them to unite against a greater evil -- ''Literature/{{Twilight}}'' and its {{fan|Dumb}}s.
** When ''Twilight'' first came along, every fandom which had ever had rivalry with ''Literature/HarryPotter'' was suddenly allied with the ''Potter'' fans against the ''Twilight'' fans.
* This actually happens quite a bit in music. Some genres (such as Heavy Metal and Rap) will have people who believe that they should put aside all differences and unite against other types such as pop. Look on any Website/YouTube music video not relating to pop music.
** Rockers and rappers are also often allied against censorship that wants to make all music family-friendly.
** It happens quite a bit within pop music's own fan culture world too. For example, we have the alliance forged between Music/TaylorSwift's Swifties and Music/LadyGaga's Little Monsters against Music/KatyPerry and her Katycats, after the reveal of Swift's song "Bad Blood", written about Perry. Meanwhile, Gaga was already Perry's rival as the two leading way-out-there performance artist type female pop stars.
* ElectronicArts essentially has made this happen indirectly for rival gaming communities, as [[ImageBoards 4chan]], Website/{{Reddit}}, Kotaku, and othershelped them get declared 2012's [[http://consumerist.com/2012/04/congratulations-ea-you-are-the-worst-company-in-america-for-2012.html Worst Company in America]] by The Consumerist.
* Larry Flynt resents Woody Harrelson for his portrayal of him in ''Film/ThePeopleVsLarryFlynt'', but vocally supported him when he intentionally got himself arrested for marijuana possession in protest over the law prohibiting it.
* Music/{{Slayer}}, bane of Religious Conservatives everywhere (at least in the 80's), released a ''pro-life song''. (But see below.)
* John Denver, [[Music/TwistedSister Dee Snider]], and Music/FrankZappa once gave an anti-censorship presentation to the Parents Music Resource Center in defense of several hip-hop and heavy metal songs.

!!New Media
* The websites YTMND.com, Newgrounds, Fark, Somethingawful, and 4chan have never had a relationship with each other that could quite be described as cordial, but in 2006, in response to the theft of intellectual property from YTMND by Ebaumsworld.com, they all joined together [[CrowningMomentofAwesome and proceeded to raid Ebaums, knocking the site offline for days on end]].
* American Censorship Day had a bit of this. In particular, groups like Wiki/{{Wikipedia}}, Mozilla, Website/{{Reddit}}, and Google were fighting alongside ''4chan'' for a common cause (though this may be more of a RivalsTeamUp; nobody particularly ''likes'' 4chan, but there's little actual hostility from the mentioned groups). Republican Darrell Issa also posted a tweet noting how both he and Democrat Nancy Pelosi were against SOPA.
** The sites blacked out on that day also ranged from [[Series/TheOReillyFactor Bill O'Reilly]]'s to MoveOn.org.
** Videogame/{{Minecraft}} and Videogame/{{Roblox}} normally ''loathe'' one another, but both of them were able to come to the agreement that SOPA was bad mojo, causing a temporary redirection of their rivalry towards fighting against it.

!!Politics
* Blair's Law posits that "the world's multiple idiocies are slowly becoming one giant useless force" and that wildly different radicals and extremists sometimes attract. Read on for examples. The phrase was named after Tim Blair, a conservative political commentator in Australia.
* In the 1990s, pro-Israel American neoconservatives and Islamic activists shared a common enemy in the form of Slobodan Milosevic's Serbian chauvinist regime.
** Even weirder, white supremacists and the anti-imperialist left found themselves on the same side, opposing NATO intervention. Creator/ChristopherHitchens believed that this was when the left lost its way.
* [[StrawFeminist Militant feminists]] and [[MoralGuardians conservative Christians]] disagree on almost every issue, with the exception of one: they are both opposed to pornography. The feminists feel that it's exploitative of women, while the Christians feel that it's immoral, sinful, ''and'' exploitative.
** The odd alliance between the Religious Right and militant feminists on the subjects of porn and prostitution has been frequently {{lampshade|Hanging}}d and criticized by more moderate "sex-positive" feminists. There's considerable debate in the feminist camp as to whether or not sex work is exploitative, especially when the participants are fully willing.
** It gets better. A proposal to create a ".xxx" top-level domain for internet porn was recently approved by ICANN, resulting in an alliance between the Religious Right (who fear that it will legitimize pornography) and much of the porn industry (who fear that it will lead to tighter regulation) against it. Alliances don't get much stranger than that.
** Similar to the issue of the ".xxx" top-level domain for internet porn, both the Religious Right and the porn industry are opposed to making it legal for women to go topless. The former believe that it's immoral, while the latter... Well, they feel that it would dramatically decrease business for them -- since there would no longer be a demand for "topless pornography".
*** Except, in several states (including New York) it IS legal for ANYONE to go topless, as long as they don't enter private businesses that request you not to (i.e. the famous "[[DressCode No shirt, no shoes, no service]]" rule).
** Margaret Atwood's ''Literature/TheHandmaidsTale'' has this unusual alliance to blame at least partially for the creation of [[{{Dystopia}} Gilead]].
** Similarly, the alliance between militant feminists and the Christian Right in banning the wearing of burqas (as seen in France and Belgium). Militant feminists think burqas oppress women and restrict their rights, while the Christian Right tend to cite "fundamentalism" creeping into society. Although burqas are banned in several explicitly Islamic nations already, so it's a bit more complicated than that, and burqa bans create an enemy mine on the other side of the fence: religious Muslims and political liberals (in the "small l" sense of "let people do what they want within reason."
** The list of things these two factions agree on gets longer: both have been critical of [[TheNewRockAndRoll heavy rock music,]] have shown a liking for [[MoralGuardians purging libraries]] of controversial books, both favor harsh 'law and order' stances against sex crimes, lean towards thinking that AllMenArePerverts whom it is woman's duty to [[WomenAreWiser set on the straight and narrow]] and in extreme cases, fully believe that SexIsEvil.
** Certain factions of the feminist movement have a [[RealWomenNeverWearDresses strong distaste of the colour pink]], as [[PinkIsForSissies do many]] [[RatedMForManly chauvinistic dudebros]]. This irony is not lost on some of the moderate branches of feminism who believe that rejecting the concept of prescribed gender roles is ''not'' the same thing as rejecting anything considered "feminine" - and that hating pink (for reasons other than simple personal preferences) can be misogynistic itself.
* [[http://www.smithsonianmag.com/history-archaeology/Wayne-B-Wheeler-The-Man-Who-Turned-Off-the-Taps.html?c=y&page=4 It seems]] that the enactment of Prohibition in the US was facilitated by some very strange bedfellows indeed -- Klansmen allied with militant labor unions?
* Islamic and Christian fundamentalists are generally opposed to each other, with the subscribing to different religions and being, well, fundamentalists. However, creationist works and arguments critical of Darwinism tend to pass between both groups, as do tracts critical of homosexuality.
** Amongst the most extremist elements of both, this also applies to anti-Semitic tracts, most notably ''Literature/TheProtocolsOfTheEldersOfZion''
* During the 1800 election in the United States, UsefulNotes/AlexanderHamilton and UsefulNotes/ThomasJefferson both decided that they hated Aaron Burr more than they hated each other, thus leading to Hamilton persuading the Electoral College to vote for Jefferson instead of Burr.
** Similarly in 1824, UsefulNotes/JohnQuincyAdams and UsefulNotes/HenryClay against UsefulNotes/AndrewJackson.
* Astonishingly common in US political history, compared to other countries. In fact, both main parties were this during a great deal of their history. To make things further complicated, there often have been alliances between members of opposite parties, which sometimes lead to political realignments. Indeed, both the Whig and the Republican parties were in large part formed by different interests that teamed up in opposition to the policies of the Democratic governments of the day.
* In 2006, Nigerian President Olusegun Obasanjo tried to change the constitution to allow himself to contest for a third term in office the next year. This led to a feud with his Vice President (and heir-apparent) Atiku Abubakar. To stop the amendment, Atiku teamed up with opposition leader Muhamadu Buhari who was planning a presidential bid as well. They successfully kept Obasanjo out of the race, but their alliance fell apart soon after since neither would step aside for/endorse the other. Obasanjo's new hand-picked successor, Umaru Yar'Adua, won.
** Yar'Adua then proceeded to die in office, leaving the presidency to the UnexpectedSuccessor Goodluck Jonathan, who surprised everybody by actually doing a decent job and getting elected in his own right.
* In a more martial Nigerian example, imprisoned Niger Delta rebels like Isaac Boro were released by the government and admitted into the Federal Army to help thwart the Biafran secession. The Niger Deltans figured being minority ethnicities in a Nigeria with 3 mutually hostile major tribes was more palatable than being minority ethnicities in a Biafra with 1 very dominant tribe, the Ibo.
* This trope has reoccurred on a regular basis throughout Canadian history:
** Confederation itself was begun when the Reformer George Brown offered to serve in a coalition government with the Conservative John A. Macdonald to resolve the political gridlock that had paralyzed the United Province of Canada. Their efforts to solve the problem eventually led to the Confederation agreement that founded Canada.
** The colony of Nova Scotia was bitterly divided over whether to join Confederation or not. The question was eventually resolved when the Irish nationalist Fenians, who were trying to gain political leverage with Great Britain by attacking Canada, began raiding the colony from the United States. The pro- and anti-Confederation movements were forced to team up and eventually joined Canada in no small part due to the need for mutual defence against any American raids.
** On the other side of the continent, British Columbia had to deal with the same question. Along with a pro-Confederation movement, the province also had an anti-Confederation movement that wanted to stay independent and an Annexation movement that wanted to join the U.S. As in Nova Scotia, the pro- and anti-Confederates eventually came together.
** During World War I, Canada was extremely bitterly divided over the issue of conscripting men to fight in the war, to say nothing of even participating in the first place. Prime Minister Robert Borden eventually overcame the Liberal opposition by enticing a number of Liberals to join him in a "Union" government that was a glorified coalition, leaving Wilfrid Laurier with a weakened Liberal rump based mostly in Quebec. Laurier's death in 1917 further crippled the Liberals' attempts to recover.
** In the constitutional debates of the early 1980s, the Quebec separatist Premier Rene Levesque found common cause with seven of the other nine provincial premiers, who came together in opposition to Prime Minister Pierre Trudeau's constitutional reforms. The "Gang of Eight", as it was called, eventually forced Trudeau to put together a compromise that addressed some of their major concerns and eventually became the 1982 constitutional patriation.
* This happens a lot on Internet debates about religion. Christian fundamentalists, atheists, and New Agers are all opposed to each other, yet in debates on religion, either the atheists will team up with the New Agers against the Christians, (as they think that fundamentalist Christianity is irrational) or the Christians will team up with the New Agers against the atheists (because they believe that atheists are against spirituality). For some reason, the Christians and atheists never team up against the New Age movement. This is generally because there just aren't enough things that New Agers do that atheists oppose that fundamentalist Christians also don't do, so there's a lack of common ground between atheists and fundamentalist Christians.
** The reason, arguably, is that Christians are, generally, fairly ambivalent towards the New Age movement because seems fairly non-threatening and borrows from Christianity (angels, etc), and, while atheists are generally against spirituality, they may feel they have common ground with the new-age movement as its practitioners are also a minority, something that can lead them to see the New Agers as allies, or, at least, as people less opposed to their ideology than mainstream Christianity, which a lot of them [[FoeYay kinda hate]] in a big way.
*** There is room for a Christian-Atheist alliance against new-agers. Both believe in a rule-following, relatively objective universe. Or they might think the New Agers are nuts. But this alliance is very rarely seen.
* The Westboro Baptist Church, aka the "God hates Fags" church, headed by 'Reverend' Fred Phelps, has managed to piss off ''absolutely everyone''. Their anti-gay protests drew plenty of condemnation from both the left and right, but even the most anti-gay social conseratives were shocked by their picketing of the funerals of soldiers with signs like "God killed your children". They even got denounced by the ''Ku Klux Klan''. How low can you get?
** They even got ''The KKK and the Hell's Angels themselves'' working hand-in-hand with law enforcement officers and firefighters to protect the funerals of the Sandy Hook victims from this kind of nonsense ''and Anonymous doxing the whole flock'' simply for trying to protest at ''those'' funerals.
** When WBC head Fred Phelps died in 2014, Creator/GeorgeTakei declared that the most appropriate thing to do would be to give sincere condolences to Phelps' surviving family and congregation rather than [[NotSoDifferent protesting his funeral in retaliation]]. This course of action was echoed by a massive number of conservative Christian individuals and organizations who otherwise wouldn't find themselves in agreement with Takei on most issues.
* National Voluntary Organizations Active in Disaster is a group of a number of organizations that are active in various facets of disaster response. The catch? Many are religious organizations from varying theological perspectives. Catholics respond alongside Protestants. Jews respond with Muslims. So do Hindus, Buddhists and the Scientologists. And- miraculously- it all works out! http://www.nvoad.org/
* The alliance between the [[UsefulNotes/LEtatCestMoi Kingdom of France]] and the [[UsefulNotes/TurksWithTroops Sublime Ottoman Porte]]; it was one of the first major alliances between a Christian and a Muslim state, directed against the [[UsefulNotes/TheSoundOfMartialMusic Habsburg Empire]].
** And then again between Catholic France and Protestant Sweden during the UsefulNotes/ThirtyYearsWar; once again to limit the Habsburg power. Cardinal Richelieu practically invented realpolitik. Sweden also was for a short time allied with its ArchEnemy Denmark-Norway during the war...but then Denmark-Norway allied with the Habsburgs in the late part of the war.
* You might not expect Republicans like UsefulNotes/RonPaul and the Tea Party movement to have common cause with progressive Democrats, but they've found themselves on the same side in [[http://www.tradereform.org/2011/05/trade-deals-unite-left-and-right-in-opposition/ opposition to free trade deals and continental integration]]. The Tea Party and its supporters see these trade deals as a threat to the sovereignty of the United States and government interference in international trade (many Tea Partiers would prefer to simply have no rules or regulations on trade at all), while their progressive allies see the trade deals as leading to jobs being offshored and labour standards being weakened in America itself.
** The sovereignty issue is a sticking point for many left-wing nationalists in Canada as well. The progressive Council of Canadians has found itself on the same side as right-wing border groups like the American Minutemen, both of whom see continental integration as a threat to their countries' sovereignty.
** UsefulNotes/RonPaul and a number of Tea Partiers have also found common ground with the left-wing Occupy Wall Street, particularly over corporate welfare, Wall Street bailouts, foreign wars, marijuana legalization, and mass surveillance.
** Most recently, there are those on both the left and right side of American politics that have united in opposition of President Obama's use of drones in warfare, particularly his failure to rule out using them on Americans ''on American soil!''[[note]]Of course, nobody remembers that the "on American soil" bit was limited by the caveat "...to take pictures." Creepy, but not DeathFromAbove.[[/note]]
** Has happened again in December 2014, with the passing of the "[=CRomnibus=] Spending Bill"[[note]] the name is slang for "Continuing Resoulution[=/=]Omnibus"[[/note]], when Conservatives and Liberals united against the Democrat and Republican party leaders in power, namely President Obama for the Democrats, and House Speaker John Boehner and Senate Minority Leader Mitch [=McConnel=] for the Republicans. The Liberals, led by Congresswomen Elizabeth Warren and House Minority Leader Nancy Pelosi were angry at the bills benefits and earmark spending to big money donors, especially in removing restrictions on political donations. Conservatives, led by Congressmen Ted Cruz and Mike Lee likewise were also angry at the Republican party for immediately going back on their promises to the conservative base, promises which the Republican party had just made to win the 2014 mid-term elections in November, rather than the base which came out to vote for them, as well as failing to challenge President Obama on several of his executive orders.
* In street demonstrations against Israel, the crowd will often include fundamentalist Muslims, anarchists, neo-Nazis, ultraliberals, and anti-Zionist Hassidic Jews who believe the Messiah must come before Jews return to Israel.
** Israel supporters also do this. In this case, it's Evangelical Christians teaming up with Right-wing Israelis against the predominately Muslim Palestinians. Ironically, [[http://en.wikipedia.org/wiki/Palestinian_Christians there's a sizable Christian population in the Palestinian Territories]].
** It is interesting that on the old Israel Insider website - a ''very'' partisan propaganda site for Israeli expansionism - many comment pieces were written by Northern Irish Unionists/Loyalists, including a regular commentator known for his association with extremist Loyalist factions. The particular loyalist grouping this commentator was associated with had strong links to far-right groupings such as Column 88 and the National Front, organisations hitherto not renowned for being pro-Jewish or sympathetic to Israel. The reasoning appeared to be both parties involved drawing parellels to a terrorist threat (the IRA/Hamas) drawn from a subject population who knew no better than blind hatred and violence towards their neighbours who were treating them with nothing other than forbearance and kindly understanding, despite all provocations. What Israelis or Ulster loyalists might have done to alienate and disaffect their neighbours was never spoken of, but the strong implication was that the two terrorist groupings were working together as a threat to world civilisation.
* UsefulNotes/RonaldReagan seemed to be a fan of this trope, and in fact saw it as a potential avenue toward world peace. He once made a speech in which he wondered how much better the world would be if [[AlienInvasion space aliens invaded]], thus forcing the US and [[UsefulNotes/SovietRussiaUkraineAndSoOn the Soviet Union]] to put aside their differences and fight the threat together. He felt this would remind both sides of their shared humanity, and lead to an end to human conflict. Lest you think he was joking, he actually brought up this scenario in ''several'' speeches, including one to the general assembly of the UsefulNotes/UnitedNations.
* Another great example from history is the Catholics and the Protestants for teaming up against the Anabaptists. In the end they took back the city of Munster and then called it a day for their alliance and begin to promptly fight one another again.
* Prominent religious conservatives and liberal disability rights groups have teamed up several times to fight the legalization of assisted suicide. They were also on the same side during the Terri Schiavo debacle.
* Following the passage of Proposition 8 (which outlawed same-sex marriage in California), Several families sued the state on the grounds that the referendum was unconstitutional. The attorneys who teamed up to represent them in court were Theodore Olsen and David Boies, best known for arguing opposing sides of ''Bush v. Gore''. Needless to say, the Defendants [[CurbStompBattle didn't stand a chance.]]
* The pro-life movement includes numerous groups arguing from different angles, many of whom wouldn't usually agree with the religious conservatives traditionally associated with the movement. Staunch atheists, self-styled liberals, American Democrats and feminists of various kinds have all been known to team up with them.
* Jane Hamsher, creator of the liberal blog Firedoglake and Grover Norquist, conservative kingmaker, teamed up in 2010 to oppose the Affordable Healthcare Act. The conservative argument was that it was big-government socialism, while liberals believed that it didn't go far enough.
* Likewise, the Don't Ask, Don't Tell policy received criticism from both the left ''and'' the right in American politics during its height. Many left-wing LGBT-rights activists opposed the policy because they believed that it wasn't inclusive enough towards LGBT people, while right-wing LGBT-rights opponents thought it was ''too'' inclusive.
* Hunters and animal-rights activists may not always see eye to eye, but they will team up to oppose development projects and save endangered species.
** They'll also unite on [[KillEmAll culling an invasive species]] (with [[http://en.wikipedia.org/wiki/Razorback#21st_century North-American Razorbacks]] providing a good example). Yes, "[[WesternAnimation/SouthPark Thin out their numbers]]!" is actually a valid argument.
* In issues involving the Separation of Church and State in the U.S., atheist groups and religious groups do team up. Some Christians don't like government being linked to their religion, the Jews, Muslims, Buddhists, and other groups don't like Christianity being endorsed by the government, and atheists don't want any religion endorsed by the government. The group Americans United for Separation of Church and State is an example of this. Another good example is the opposition to Amendment 8 in Florida, an amendment to allow the state treasury to be used to support churches and religious institutions. One of the more prominent opposing voices is a Rabbi.
* In the midst of the 2012 Chick-fil-A gay marriage controversy, Chick-fil-A's supporters (during the "Chick-fil-A Appreciation Day") and its protesters (including the "kiss-in" folks) joined in condemning the mayors of Boston, Chicago, and Philadelphia for comments indicating that they would work to block the fast food company's plans to open restaurants in their cities. Both sides of the issue maintained that you can agree or disagree with the company's stance all you want and protest one way or the other accordingly, but to dictate that someone cannot operate a business somewhere because of their views would be an infringement upon free speech and free markets.
* Despite their obvious theological differences, Catholics and Protestants often team up to oppose abortion.
* Opposition to UsefulNotes/BarackObama's efforts to enact military action against Bashar al-Assad for using chemical weapons against Syrian civilians came to be made up of Tea Party Republicans, anti-war Democrats, and numerous other constituents of both parties. On the flip side, President Obama got some support from people who don't tend to agree with him on most other issues (e.g. John [=McCain=] and [[Series/TheOreillyFactor Bill O'Reilly]]).
** This all fell apart though when Obama leapt on Russia's offer to help get rid of Syria's chemical weapons. The anti-war Democrats and non-interventionist Republicans were cool with this, as were many Democrats who had favored military action (since it was a way of ending the chemical weapons issue without fighting), but the pro-war Republicans were more than skeptical and the Tea Partiers shared in the skepticism of Russia's intentions and were opposed to the existence of any US role (also: it made the UN look useful. Tea Party hates that).
* The whole NSA scandal has produced some really strange alliances. The anti-Snowden camp has UsefulNotes/BarackObama, John Boehner, Michele Bachmann, Nancy Pelosi, UsefulNotes/HillaryRodhamClinton, Dick Cheney, UsefulNotes/GeorgeWBush, John [=McCain=], and Creator/AlFranken. Meanwhile, the pro-Snowden camp contains AlGore, UsefulNotes/SarahPalin, UsefulNotes/RonPaul, Creator/MichaelMoore, and Radio/GlennBeck. And there's also Bill Maher who hasn't seemed to have picked a side yet.
* While it was obviously something that conservatives were angry about, even liberals and other people who dislike SarahPalin were disgusted by Martin Bashir's assertion that she deserved to be subjected to "Derby's dose" (a punishment enacted on African slaves where they were forced to consume feces) for comparing the federal debt to slavery. This was compounded with Bashir's fellow former MSNBC anchor Alec Baldwin alleging a DoubleStandard in the fact that Baldwin was quickly fired for an anti-gay slur he said in an outburst against reporters yet Bashir still had his job after his ''scripted'' offensive comments. Unsurprisingly, Bashir eventually resigned.
* This is how UsefulNotes/{{Sweden}} was founded. Western Geats, Eastern Gaets and Swedes (viking-tribes) teamed up to avoid being conqured by the Danes. To this day their national emblem is [[http://en.wikipedia.org/wiki/Three_Crowns "The Three Crowns".]]
* Despite having very sour relationship between UsefulNotes/{{Israel}} and UsefulNotes/SaudiArabia (since they don't have emissaries to their respective countries) and Saudi support for many Palestinian groups, both countries found themselves to be unlikely allies against a great threat, UsefulNotes/{{Iran}}, due to the concerns of the Iranian nuclear program.
* For the [[http://en.wikipedia.org/wiki/Scottish_independence_referendum,_2014 2014 Scottish referendum on independence]], the "No" camp was dominated by a rare alliance between Labour and the governing parties (the Conservatives and Liberal Democrats). Among the smaller political movements opposed to independence, there was also UKIP, far-left parties and far-right nationalists. Take any combination of the five and you'd find they were bitter enemies. There was some division in the "Yes" camp to, but they managed to coalesce around a vaguely left-wing vision.
** Although in the case of the latter, this trope was still in full effect, as support for independence ranged from Business for Scotland to the Scottish Socialist Party, as well as the mutually hostile SNP and Green Party (the latter temporarily withdrawing at one point in protest at Yes Scotland becoming an "SNP vehicle"). Even some Labour rebels backed an independent Scotland while desperately hoping that the SNP would not be the ones to lead it...
* The Western far-right and far-left seem to really love UsefulNotes/VladimirPutin, almost as much as they hate Israel. Putin's right-wing supporters include social conservatives who admire his stance against the gays, Christian fundamentalists who argue that he's reviving the Russian Orthodox Church while the West continues to become "godless", and anti-EU nationalists. His left-wing supporters include aging old-school communists seemingly defending Russia by force of habit and hardcore anti-imperialists willing to embrace any opponent of American hegemony.
** In addition of admiring Putin in the recent times, both Russian monarchists & communists(which also has conservative moral stance) doesn't take kindly towards liberalism(in a generic sense) for contributing nothing but chaos, undoing centuries of Imperial & Soviet achievements which was later partly restored by Putin. Also, they seem to unite against nationalists of neighboring nations like Ukraine & Chechnya, seeing them as Western tools to weaken Russian hegemony.
* Ultra-nationalist political parties in Europe have had a long tradition of neo-Nazism and anti-Semitism. But since the early 2010s, a number of them have attempted to cosy up to their Israeli counterparts to fight what they perceive to be an Islamic threat to Europe.
* In a truly bizarre case of both this and GoKartingWithBowser, Marcus Garvey (leader of the Back-to-Africa movement) was friends with Earnest Sevier Cox, a vicious white supremacist and eugenicist, and his fellow segregationists. Why? Garvey felt that the only way for black people to be freed from discrimination was to simply start their own country: this was ''great'' for Cox, who believed that miscegenation led to the downfall of civilizations, and that America needed to be completely free of nonwhite influence in order to thrive. Together they collaborated on the repatriation movement, advertising each other's writings and speaking at each other's events. When Garvey was imprisoned, [[PleaseSpareHimMyLiege Cox went to the Secretary of Labor personally to ask him to pardon Garvey]], and even after Garvey was deported, they wrote each other letters and referred to each other fondly in writings. Cox even dedicated a book to him.

!!Sociology
* The [[http://en.wikipedia.org/wiki/Robbers_Cave_Experiment "Robbers' Cave" experiment]]. Two groups of boys at a summer camp were first isolated from each other and encouraged to form a group mentality. After a few days they were introduced to the other group in a competitive environment in order to produce inter-group friction. This stage was ''ended early'' when the hostile rivalry reached potentially dangerous levels. The groups were then given mutual "superordinate goals" forcing them to work together, and the hostility evaporated as quickly as it had appeared.

!!Sports
* Fans of sports teams coming down to the wire on that last playoff spot can find themselves rooting for their most hated rival to win because their rival just happens to play some third team that needs to lose in order for their team to be able to jump ahead of them in the standings. "(''Insert Hated Team Here'') Fan For A Day" signs are not uncommon in the stands in such games.
** A funny example in 2014 FIFA World Cup: Germany defeated the host country, Brazil, for a spectacular 7-1 in one of the semifinals, which was the worst defeat Brazil ever suffered and a traumatic experience for all the fans. At one point the Brazilian fans (those which hadn't left already during the first half) was cheering on the German team. The other semifinal match was Netherlands X Argentina, with the latter winning and making it into the finals against Germany. Nearly ALL Brazilians rooted for Germany, out of spite and fun. And Germany scored 1-0 during additional extra time, thus winning the tournament. Brazilian fans were satisfied, even after losing 3rd place match to Netherlands, just because the arch-rival Argentina was defeated. For those not familiar with soccer, Brazil vs. Argentina is probably the greatest rivalry in the world of soccer - to the point that there is a Cup that only these two national treams dispute! It also helped that this was only the second time Germany and Brazil meet in a World Cup, and the German team won fairly gracefully, toning down the goal celebrations at one point and comforting members of the host team after the game. Plus, loosing so badly is already a disgrace, but loose so badly against team which then doesn't move forward to win the cup can be considered as even worse.
* Heading into the last game of the 2014 [[RugbyUnion Six Nations Championship]], England were to be the champions if France, England's longstanding rivals, won against Ireland. English fans on social media commented on how odd it feels to be cheering on France.
* Such sporting rivalries have given rise to the popular "I support two teams - X, and anyone playing against Y" T-shirt design, with many regional variations.
* There are a couple of football rivalries in Germany, the most famous being the one between Borussia Dortmund and Schalke 04. Those matches are always heated. But there are two moments during which the audience is always in agreement: When the "Steigerlied" is played (a song regularly sung in both arenas to honour the time when the Ruhr Valley was a coal region) and whenever Bayern München is loosing. It's a very common attitude among most football fans in Germany to cheer even for the worst rival as long as Bayern München doesn't get a point.
* All-Star Games in various sports feature this, as players from opposing teams unite to take down players from the other league/conference/whatever.

!!War

* Can probably be applied to the vast majority of wars, including the alliances against UsefulNotes/NapoleonBonaparte during UsefulNotes/TheNapoleonicWars.
* This trope is one of the reasons DrillSergeantNasty exists. Even if 40 people in a platoon can't agree on ANYTHING else, they can always unite around the fact that the sergeant's an ass.

[[AC:Classical Times]]
* During the fifth century BC, [[AncientGreece the Spartans and Athenians]] teamed up to fight the Persians.
* Combine this trope with ApeShallNeverKillApe and you get the basic idea for UsefulNotes/TheCrusades.

[[AC:18 Century]]
* UsefulNotes/TheAmericanRevolution was a classic example of this. France and Spain, mortal rivals and conservative catholic near-absolute monarchies, joined forces with British protestant republican rebels and were funded by the protestant and deeply anti-Spanish Dutch Republic. It was deeply ironic when radical republican ideology flourished across Atlantic a couple of decades later and (sorta) took down all three countries.

[[AC:19th Century]]
* Napoleon's regime is an example of this in an ideology. Napoleon was a veteran of the French Republic's military, his government used the republican flag and he claimed to embody the ideals the republic had represented and yet his government was unashamedly an absolute monarchy with Napoleon not shirking even slightly from the trappings of royalism (see, for example, the painting of his coronation).
* In the WarOfTheTripleAlliance, Brazil and Argentina, who had long been antagonistic towards one another, went to war against Paraguay. They were joined by Uruguay, which was basically their punching bag.

[[AC:World War I]]
* During UsefulNotes/WorldWarOne, the conservative monarchist German government helped the radical UsefulNotes/VladimirLenin return to Russia so that he could overthrow the government and make peace with the Central Powers.
* The parliamentary democracy of France forged an an alliance (the Entente Cordiale) with autocratic Czarist Russia, and later democratic Britain, against semi-democratic Imperial Germany and Austria-Hungary. When the U.S. was thinking of entering the war, Russia's February Revolution happened and the Wilson administration welcomed the development as removing the last obstacle to a "democracy vs. dictatorship" narrative.

[[AC:World War II]]
* This happened ''a lot'' during UsefulNotes/WorldWarII:
** Jiang Jieshi (Yangzi river region), the Guangxi Clique (Pearl river region), Yan Xishan (Shanxi province), Long Yun (Yunnan province), Mao Zedong (Sha'anxi province), Sheng Shicai (Xinjiang province), and several dozen less powerful warlords called time out and fought the occupying Japanese together. All sides were frantically trying to ensure their 'allies' [[LetsYouAndHimFight took the majority of the casualties]].
** The Soviets and Nazis declared a nonaggression pact, though both considered it merely a stalling action before war broke out. Germany wanted the USSR out of the way so that they could defeat Britain and then attack the USSR because they wanted to avoid a two-front war. The USSR wanted to wait as long as possible so that they could get their factories and army up to full capacity. Obviously Germany never took Britain and attacked the USSR before they were entirely ready (and also allowed itself to get sidetracked by a mission to clean up the mess Mussolini had made in the Balkans), thus causing a two-front war anyway.
** The United States, United Kingdom, China, and the Soviet Union worked side by side to defeat Germany, Japan, and Italy
** WinstonChurchill was a staunch anti-Communist, but he promised help to the Soviet Union immediately after Hitler attacked it. He once said, "If Hitler invaded Hell I would make at least a favorable reference to the devil in the House of Commons."
** Various people classified as sub-humans by the Nazis, such as Slavs, Chechens and Indians, teamed up with the Nazis against a common enemy (the Soviet Union for Chechens, Britain for Indians). Many Slavic people actually served in the Wehrmacht itself.
** During the Battle of Britain, the British and Irish governments put together a joint plan, [[http://en.wikipedia.org/wiki/Plan_W Plan W]], for the defense of neutral Ireland against German invasion. One effect of this plan was the Irish military trading in their uniforms (which resembled those of the Germans) for new ones more closely resembling those of the Brits, to avoid spooking jumpy British troops from [[FriendOrFoe shooting at the wrong people.]]
** At one point Italy switched sides, giving birth to multiple cases of this: the Italian government was on the same side as the Allies, who were the enemy until ''literally the day before'', due to German troops seizing control of most of the country; in German-occupied territories, LaResistance was divided into four factions (Monarchists, Republicans, Communists and Anarchists), with each faction loathing the others but agreeing to collaborate and settle things peacefully after the war and Germany's defeat and king Vittorio Emanuele III (detested for allowing Mussolini's takeover and abandoning Rome and the armed forces without orders right after announcing the surrender to the Allies, even before the Germans moved to take over); and the ''[[MyCountryRightOrWrong Italian]]'' Resistance occasionally collaborated with the ''Italian'' Fascists (allied with the Germans) against the ''Yugoslav'' Partisans to try and defend the Italian population in Istria (a border area inhabited by both Italians and Yugoslavs, where Mussolini's government started throwing Yugoslav civilians into camps and the Yugoslav Resistance had recently started doing the same to the Italians); and the Communist faction of the Italian Resistance would occasionally collaborate with the Yugoslav Partisans against the Monarchists.
** The Italians (Benny the Moose himself included) were actually pretty anti-German and anti-Hitler prior to the late 1930s. In fact, the British and French joined Mussolini's Italy in the Stresa Front, an agreement to uphold the independence of Austria and prevent any further breaking of the Treaty of Versailles. Mussolini himself referred to Hitler as a "mad little clown." However, the second Italy invaded Ethiopia, the British and French lost what little friendliness with Mussolini they had and took steps to isolate his country. (Most of their measures, including a toothless embargo on weapons sales, didn't work.) Without any friends, Mussolini and his Fascists were forced to cozy up to Hitler and the Third Reich. (That was a fatal mistake.) This may have contributed to the stereotype of the Italian forces being cowardly, when actually they were merely chronically unmotivated to fight. If the people you've just been ordered to kill are the people who were your allies last week, dropping your rifle and just getting the hell away from all this madness is not at all an unreasonable response.
** Five days before the death of Adolf Hitler The Battle for Castle Itter was fought. Dubbed the strangest battle of World War II; 14 American soldiers, two Sherman Tanks, French and Eastern European prisoners, Austrian Resistance, as well as ten anti-nazi Wehrmacht soldiers and one Waffen-SS man teamed up together to drive elements of the 17th Waffen-SS Panzer Division from setting up a stronghold in the castle. Notable prisoners included tennis star Jean Borotra, former prime minister Édouard Daladier, Charles de Gaulle's elder sister Marie-Agnès Cailliau, former commander-in-chief Maxime Weygand, former prime minister Paul Reynaud, former commander-in-chief Maurice Gamelin,right-wing leader François de La Rocque and trade union leader Léon Jouhaux. Besides the French VIP prisoners, the Castle held a number of Eastern European prisoners detached from Dachau. Major Gangl of the Wehrmacht managed to get a a call out to a friend who owed him a favour and a group of Austrian resistance men as well as several more Wehrmacht men joined in the American/German/French/Austrian defense. Together they drove off the Waffen-SS until they were relieved by approaching US 142th Infantry Division.
** Germany and Japan's alliance became more complicated later on, but it began with their shared opposition to the Soviet Union and to communism in general. And it was strengthened once Germany was at war with the same European countries who had Asian colonies wanted by Japan. Germany helped Japan by keeping the European colonial powers busy with a war on their home fronts, making it very difficult or impossible for them to prop up their colonies against Japanese attack. Japan helped Germany by keeping busy a certain number of British, Commonwealth, and American forces who would otherwise be fighting Germany. However the Japanese army ruled out invading the Soviet Union in July 1941, the lackluster performance of Operation Barbarossa confirming their earlier assessments about Soviet strength, thereby ruining German hopes of crushing Russia in a two-front war.
** The America First Committee, which opposed U.S. entry into World War II, was an odd alliance of right-wing isolationists, left-wing pacifists, FDR haters, Nazi sympathizers, pro-Soviet communists (until Operation Barbarossa), anti-Semites, and Anglophobes. All together, the movement's goals coalesced into a vaguely right-wing vision.


[[AC:Cold War]]
* During the UsefulNotes/ColdWar, this was practically official policy for both sides.
** In an ideological level [[CallBack Fascism and capitalism]] joined together (or more accurately, [[TheManBehindTheMan Capitalism put in fascism]]) in Latin America against the Communist threat. An exact opposite of what took place in WWII: Communism and Capitalism vs Fascism.
** During and immediately after World War II, anti-Japanese sentiment was very strong in America. All that was forgotten when the U.S. jumped at the chance to make Japan a capitalist ally against the People's Republic of China, North Korea, and the eastern part of the Soviet Union.
** Under Stalin, the Soviet Union had regarded all non-communist countries as enemies, but Khrushchev began a policy whereby any left-wing or anti-western regime in the third world could be regarded as a potential ally.
** The U.S. even went so far as to support anti-Soviet communist regimes, such as Yugoslavia and (eventually) the People's Republic of China.
** The Suez Crisis was a weird aberration when both the U.S. and U.S.S.R. took a hardline stance against the intervention into Egypt and both put pressure on Britain, France, and Israel to pull out. This created an instance where the U.S. voted with the Soviet Union and against its NATO allies at the United Nations. And this was at the same time that the U.S. was vehemently condemning the Soviets for crushing the Hungarian Revolution too!
** The UsefulNotes/SovietInvasionOfAfghanistan united pretty much every country which wasn't in the Soviet bloc. The U.S. and the other western capitalist powers immediately decided that the people fighting Russians were the good guys. Muslim countries also backed the Afghan resistance, seeing it as a religious war between Islam and godless communism. Even communist China decided to support the Afghan rebels.
** Despite the Sino-Soviet split, China and the Soviet Union worked together to support the communist forces in UsefulNotes/TheVietnamWar. Once the common enemy was eliminated, however, Vietnam became a Soviet sphere of influence and spent the rest of the Cold War having border skirmishes with a now hostile China.
** In neighboring Cambodia, the Khmer Rouge forged an alliance with Vietnam in order to oppose America. As the Americans began to withdraw from Indochina, Cambodia's (largely justified) fears of Vietnamese ambitions in the region grew, causing them to purge Vietnamese-trained personnel in their military and launch multiple border raids against Vietnamese positions, which in turn prompted Vietnamese reprisals. This led to the slightly-surreal situation in which both governments were outwardly professing their undying friendship and unity even as their respective military forces fought on the ground, and ultimately culminated in the Vietnamese launching a full invasion of Cambodia to oust the pro-Chinese Khmer Rouge and replace them with a pro-Soviet, pro-Vietnam People's Republic. Finally, for extra irony points in the wake of the invasion, Khmer Rouge immediately turned from the violent and brutal bugbears of Kampuchea and neighboring Thailand into the honored guests of the anti-Communist alliance ASEAN in Thailand's capital of Bangkok, allies of the conservative monarch Sihanouk who the Khmer Rouge had deposed a second time in 1976 (the first being in 1970 by the Khmer Republic), and friends of the United States and Australia.
* The Iranian Revolution brought together (for a brief period of time) leftists, communists, and fundamental Islamists.
** Also during the UsefulNotes/IranIraqWar, Iran received a great deal of weapons and aid from Israel, because both countries considered UsefulNotes/SaddamHussein a far greater enemy (Hussein in fact disseminated a notorious pamphlet written by his father-in-law titled "[[http://en.wikipedia.org/wiki/Three_Whom_God_Should_Not_Have_Created:_Persians,_Jews,_and_Flies Three Whom God Should Not Have Created: Persians, Jews, and Flies]]"). Historian Trita Parsi has also claimed that Israel's bombing of Iraq's nuclear facility at Osirak was assisted by Iranian intelligence, but Iran officially denies this. On the Iraqi side, the U.S., Soviet Union, gulf countries, and a variety of other countries, all gave more support to Iraq than Iran.

[[AC:Post-Cold War]]
* This tendency was also repeated again in the African countries of Chad and Somalia, when the warring forces teamed up to kick out the foreign invaders. In Chad's case, the government and rebel forces united to fight the invading forces of Libya, while the Somalis temporarily put their civil war on hold to kick out the United Nations force sent to restore order after the collapse of the dictatorship, before they returned to fighting among themselves.
* The [[RuthlessModernPirates ongoing problem of piracy]] near the coast of Somalia has occasionally forced the naval forces of countries that would otherwise be enemies to invoke this trope by fighting together in skirmishes against the Somali pirates. A notable example of this was seen when the crew of the American USS ''James E. Williams'' fought alongside North Korean sailors to defeat pirates who had captured a North Korean cargo ship in late 2007.
* Recently, the Ukrainian crisis is chock-full of this. Before Yanukovich stepped down, Euromaidan protesters range from pro-Western liberals & human rights activists to far-right ultranationalists not averse with [[PuttingOnTheReich Nazi symbolism]], later the aforementioned ultranationalists forming "national guard" battalions fighting pro-Russian insurgents consisting of Ukrainian army/police deserters, Communists, Tsarist nationalists, Cossacks, and even western & (non-radical) Muslim volunteers, among others.

[[AC:War on Terror]]
* The [[http://en.wikipedia.org/wiki/2001_uprising_in_Herat 2001 uprising in Herat]] for the US and Iran against the Taliban.
* Though they have yet to actually team up in a war, the Kurds and the Armenians, formerly bitter rivals, actually have somewhat friendly relations now that the Kurds and the Turks are enemies. A representative of the Independent Kurdistan movement even apologized for all Kurdish involvement in the Armenian genocide.
** The best part is that the atrocities were done mainly by ethnic Kurds, not ethnic Turks. Which makes sense, since they live next to each other.
* The [[TheWarOnTerror September 11 attacks]] brought a few of these out of the woodwork, as governments who aren't exactly known for their fondness of the American government condemned the attacks and the terrorism that caused them. Among these governments? ''Iran, North Korea and the Taliban''. (At least officially.)
* Today, with ISIS terrorizing Iraq, a very odd alliance has cropped up with [[YanksWithTanks American airpower]] working alongside [[https://medium.com/war-is-boring/iran-sends-tanks-into-iraq-to-fight-islamists-d130c9fa58bb Iranian tanks]], both coordinating with [[LaResistance Kurdish rebels]]- the same people Iran had been fighting in their own northern territories before. ISIS seems to be EvilerThanThou from Iran's perspective, and the U.S.A. just doesn't want ISIS to win. Also, the Russians (which has a tense relationship with the Western world since 2014) provided Iraq & Assad's Syria with fighter jets & other supplies, by September 2015 Russia puts their boots on the ground in support of the Assad government, and there are earlier reports of Russian volunteers among the Kurdish resistance.
** In fact, ISIS may be a major modern example - most charts and graphs you can find on the web suggest they're pretty much enemies with everyone else in the Middle East, not to say the world at large. (For reference, Indonesia, the country housing the world's largest amount of Muslims, staunchly condemns them.) [[EvenEvilHasStandards Even]] some branches of ''Al Qaida'' now condemn their actions - though in their case, it's more because they feel ISIS' intractable behavior does more harm than good to the islamic cause than because of their ideology, because they supported them before. Even then, if there's only one thing in ISIS' favour, it's the [[WeAreStrugglingTogether fractiousness of its opponents]] and [[GambitPileup colliding vested interests]], which could be best summed up [[http://www.slate.com/blogs/the_world_/2014/07/17/the_middle_east_friendship_chart.html by this chart]]. [[http://thinkprogress.org/world/2014/06/12/3447800/iraq-syria-chart/ And this chart]].
** In the early stages of the civil war, Al-Qaeda backed Islamists were this to secular factions like the Free Syrian Army. Despite their intense and mutual disdain for one another, both sides shared a common goal in getting rid of Assad. The beleaguered and poorly-armed FSA came to value these Islamist extremists as shock troops, until ideological disagreements inevitably tore apart the fragile alliance.
** Several former American & British special forces operators & members of the [[RightWingMilitiaFanatic militia movement]] volunteered to fight alongside the predominantly ''communist'' Kurdish resistance. Cue many American right-wing patriots cheering these fighters.
** Averted with one group of Houthi rebels in Yemin, according to ''[[Creator/{{HBO}} VICE]]'': Their segment was titled "The Enemy of My Enemy" (is still my enemy) and they hate America as much as they hate ISIS.
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[[/folder]]

to:

[[foldercontrol]]

[[folder:Animated Films]]
[[index]]
* In ''WesternAnimation/{{Shrek}}'', [[spoiler:the ogre teams up with the [[InstantAwesomeJustAddDragons dragon]] he was sent to slay to save the DamselInDistress from the KnightInShiningArmor, because HumansAreTheRealMonsters.]]
** Though slaying the dragon was never part of the bargain; he just had to recover the princess (normally he'd have to slay the dragon, but this time he just outwits her).
** Also, [[spoiler:she comes to help because Donkey, who she loves, asks her to.]]
EnemyMine/AnimatedFilms
* In the first ''WesternAnimation/ToyStory'', Woody and Buzz are initially bitter enemies due to Woody's jealously over Andy's affection, but when the two toys end up separated from the rest of the group, they must work together in order to get back home. [[spoiler:They then become [[FireForgedFriends good friends]] for the rest of the trilogy.]]
EnemyMine/AnimeAndManga
* This trope is the whole point of ''WesternAnimation/MonstersVsAliens'', though the monsters [[AntiVillain are pretty good-natured]].
EnemyMine/ComicBooks
* In the ''WesternAnimation/{{Futurama}}'' movie "Bender's Big Score", not only is the Robot Devil providing music at [[spoiler:Leela's abortive wedding]], but they later team up with the robot mafia and evil robotic Santa to take Earth back from the scammer aliens.
EnemyMine/FanWorks
* When Prince Achmed from ''WesternAnimation/TheAdventuresOfPrinceAchmed'' stumbles into the volcano home of a powerful witch, she tries to strangle him. When Achmed finally manages to tell her that he was marooned there by the evil wizard, she says "He is my greatest enemy! And we are friends!" She then helps Achmed defeat the wizard.
[[/folder]]

[[folder:Anime And Manga]]
EnemyMine/{{Film}}
* Subverted in ''Anime/UFORoboGrendizer''. In one of the manga versions, ''Anime/GreatMazinger'' BigBad, Emperor of Darkness, offered ''[[Anime/MazingerZ Kouji Kabuto]]'' an alliance to fight [[AlienInvasion the Vegans]]. It was subverted because Kouji refused the offer and BigBad King Vega [[spoiler:killed the Emperor to impede that alliance and get rid of a possible enemy and competitor.]]
EnemyMine/{{Literature}}
* In the anime version of ''Anime/ValkyriaChronicles'', Episode 12 has Welkin and Faldio team up with Jaeger and Selvaria to foil a plot to kidnap Princess Cordelia (and Alicia, who was captured in the process) and use her to BS an impromptu alliance between the Federation and Gallia, which is really a cheap way for Prime Minster Borg to usurp the throne "legally" and force the Imperial forces into a two front war situation, which at best leaves him in control of Gallia with Federation backing and gives the Imperial forces pause, or at worst ensures the Imperials are forced to fight a much bigger enemy on two fronts, with either outcome leaving him at an advantage. Everyone launches obvious objections to Welkin's proposed EnemyMine until Welkin points out the massive mutual gain they stand to profit from, leading to a brief Imperial-Gallia alliance to foil the plot.
EnemyMine/LiveActionTV
* ''Franchise/LyricalNanoha'':
** In the first two ''Anime/MagicalGirlLyricalNanoha'' seasons, Nanoha's {{de|featMeansFriendship}}termination finally pays off, and her rivals turn on their creator and help her and the Time-Space Admin crew.
** It's a mixed bag in ''[[Anime/MagicalGirlLyricalNanohaStrikerS StrikerS]]''. On the one hand, [[spoiler: most of the Numbers were headed in the right direction as of the epilogue and eventually joined either the [[SaintlyChurch Saint Church]] or [[TheFederation the TSAB]] afterward, Lutecia has her mom back, and Agito had performed a full-fledged HeelFaceTurn and joined up with Signum to defend the city from Jail's drones.]] On the other hand, [[spoiler:Jail and his most loyal cyborgs are cooling their heels in prison instead of making friends with the Aces.]]
EnemyMine/NewspaperComics
* In ''Anime/{{Pokemon}}'', the heroes are forced to work with TeamRocket every once in a while, most often in the movies where the whole world is in danger. It happens the point the trio performs a LampshadeHanging on it in Movie 8:
-->'''James:''' Looks like everything's back to normal.\\
'''Jessie:''' Which means we're back to being losers.
** This is the whole plot of the episode "''Pikachu Re-Volts''". After Jessie and James's Pokemon are controlled and taken by their fellow Team Rocket members, Cassidy and Butch, Ash and company team up with them to get the Pokemon back.
** The most bizarre version of this has to be the Season 7 episode "''The Bicker the Better''", where after much squabbling between males and females, Jessie recruits a (slightly reluctant) May into a tag team battle...versus James, who also formed an alliance with Ash, in what Brock calls "the battle of the sexes".
** And in a first season episode, Ash and the gang even '''''help''''' Team Rocket try to kidnap the MonsterOfTheWeek: a Snorlax, which they thought was the one causing the drought in a nearby town.
** A more traditional example is in the Tag Battle Tournament mini-arc, the finale of the first ''Diamond and Pearl'' season. Ash and '''[[TheRival Paul]]''' were randomly picked to compete as a team for a pair of Soothe Bells as the prize. Paul just wanted to get some experience for his team, none of the happiness items for him. The results were not pretty, even though they managed to win.
** In episode [=XY063=], Team Rocket and Ash's crew work together to foil a Pokemon hunter. The impetus for it was the hunter kidnapping Meowth, James' Inkay, and Jessie's Pumpkaboo. It even features a JustInTime moment for Wobbuffet.
** Happens fairly often in ''Manga/PokemonSpecial''. Sabrina, Koga, and Lt. Surge of Team Rocket aid the protagonists against the Elite Four in the Yellow chapter, while Lorelei of the Elite Four helps the protagonists when Team Rocket invades her hometown.
** Near the end of ''Manga/PokemonDiamondAndPearlAdventure'', Cyrus and his three top officers team up with the heroes to stop Charon from taking over Sinnoh. When he was last in power, Cyrus had attempted to destroy the universe.
EnemyMine/ProfessionalWrestling
* In ''Anime/YuGiOh'', Yugi and Kaiba are frequently forced to team up against a bigger threat, and it almost always ends with Kaiba walking away muttering about how he is destined to beat Yugi someday.
** Yugi and Kaiba are more like rivals than enemies - Kaiba is never actually on the 'evil' side except during the very start of the series (given a partially accurate incarnation in Season 0, which was so much DarkerAndEdgier than the rest of the series that it's never had an English dub).
** Also, Malik and Bakura's alliance, specifically in the duel against Yami no Malik.
** Similarly during the formation of the same team in ''WebVideo/YuGiOhTheAbridgedSeries'', Marik proclaims, "And the enemy of my friend is also my enemy!" Bakura informs him that's not how it goes.
EnemyMine/{{Radio}}
* ''[[Anime/MobileSuitGundam00 Gundam 00]]'' has the alliance between the Big Three (Union, HRL, AEU) which was formed to defeat the rogue paramilitary organization Celestial Being.
** In Episode 17, all five sides (Celestial Being, Katharon, the coup d'etat forces, the regular Earth Federation military, and A-Laws) temporarily dispose of their hatreds in a CrowningMomentOfAwesome ''for all sides'' that involves stopping a potential Ice Age and the slaughter of tens of millions of lives by shooting down the countless falling pieces of the destroyed Africa Orbital Elevator.
** Later in season 2, the Federation army reluctantly allies itself with bitter enemies Celestial Being and Katharon against the A-Laws and the Innovators.
EnemyMine/{{Roleplay}}
* In ''Manga/DeathNote'', Near and Mello are bona fide enemies, despite being {{Worthy Opponent}}s. When Kira manages to be a bigger fish to fry than they had expected, they do end up de facto needing to work together, using the only female on their of their teams as a liaison, and pretending viciously that they want nothing to do with each other.
** Near's pretty clear that he'd have no problem working with Mello, to the point that it could be argued he does want to. Mello's the one who wants nothing to do with Near (besides win against him) and tries to verbally pretend he's not helping. "Near, I have no intention of working with you. However, it wouldn't be right to just take my picture and leave. So, I'll settle my debt." Afterward, he still maintains contact with Lidner but pointedly doesn't dwell on the fact that he knows that Near knows about the contact.
** Also, at one point the investigation team is forced to temporarily ally with Kira himself, as one of the Death Notes ends up in the hands of the Mafia, something that both sides consider the worst possible scenario.
** Also in the first arc when the [[JackTheRipOff Second Kira]] first appears L agrees to let Light work with the taskforce [[spoiler: to use one Kira to lure out the other in order to get evidence on both of them.]] Light finds this fortuitous because then he can keep tabs on both L and the Second Kira.
** The entire Yotsuba arc can be considered this, with Light and L working together to track down the new Kira. Light's temporarily turned good thanks to a MemoryGambit, but L accepts working with him despite still being suspicious of him.
EnemyMine/TabletopGames
* ''Anime/CodeGeass'' has Lelouch and Suzaku teaming up to get rid of the Kyushu invaders.
** Then a season later they team up again to [[spoiler: conquer the world, make themselves out to be two of the most hated people in history, dress Suzaku up as Zero after faking his death, then assassinate Lelouch in a highly public manner in order to bring about world peace.]] [[TheExtremistWasRight It worked.]]
EnemyMine/{{Theater}}
* Happened at least thrice in the first season of ''Anime/CorrectorYui'', where Yui and War Wolf had to teamwork to save either themselves or others. Also happened in the second season of the anime, with Yui and DarkMagicalGirl Corrector Ai.
EnemyMine/VideoGames
* ''Franchise/LupinIII'': [[SympatheticInspectorAntagonist Inspector Zenigata]] is usually willing to team up with [[VillainProtagonist Gentleman Thief Lupin]] whenever it involves taking down a more clearly evil criminal (which is surprisingly often). This is implied to be main reason why he hasn't been fired yet.
EnemyMine/WebAnimation
* In ''Anime/DragonBallZ'', Goku and Vegeta's alliance initially starts when they both team up to fight Frieza, the former to save the Universe, the latter because he wants to avenge his pride by defeating Frieza because he was used by him constantly. He ends up redeeming himself and forming a family with Bulma, though he maintains [[TheRival his rivalry]] against Goku.
** And before that, Piccolo joined Goku, and later the rest of the cast to fight against the Saiyans. For viewers who joined the show at the start of the ''Z'' series, their past history with one another could easily be missed or forgotten.
*** For a while, ''Manga/DragonBall'' had a pattern where the main antagonist of the previous arc would team up with Goku against the villain of the current one, earning good guy status in the process. This started with Yamcha (who tries to rob Goku in his first appearance) and continues all the way to Freeza, when Toriyama finally gave us a villain too evil to ever join Goku. Here is a list of some of the former villains who joined Goku, mostly through EnemyMine {{Heel Face Turn}}s: Oolong, Yamcha, Puar, Tien, Chao-tzu, Piccolo, Vegeta, Android #16, Android #17 (though he never actually met Goku before leaving off-screen shortly after his turn), Android #18, Dabra (according to anime filler in Other World), Majin Buu, Nuova Shenron (in ''[[Anime/DragonBallGT GT]]''), and Abo and Kado (in the recent special which introduced Table to the world).
*** Actually, he made all his friends by fighting them first, except for Roshi, Krillin and Lunch.
*** And Krillin was his training rival for a while.
*** Near the beginning of the Android Saga, Krillin mentions this pattern when Bulma asks the guys why they don't just find Dr. Gero and stop him from ever creating the Androids. So long as they have a common enemy, Vegeta is less likely to revert to being a full-blown villain.
*** Cell actually forced quite a bit of this. Being an Android threat, he and the rest of them give Vegeta someone beyond Goku to kill. Later, Piccolo, after trying to kill 17 to keep Cell from absorbing 17, then decides to fight Cell, despite being weakened, to try to save 17. After Cell does absorb 17, Trunks and Krillin try to protect 18 from Cell, even if it means having to go through Vegeta to do so. It is then because of how dangerous Cell has become upon getting 18 that convinces the Z-Warriors to let 16 fight with them.
EnemyMine/WebComics
* Every time Gun for Hire Katana joins the rest of the Techode pilots in ''Anime/GadGuard'' to stop a rogue Gad from destroying everything it touches. Interesting in that half the team (both girls, who met him under different circumstances) don't consider him an enemy. His adorable MoralityPet helps.
EnemyMine/WebOriginal
* The Impel Down arc in ''Manga/OnePiece'' was one big EnemyMine moment. [[spoiler:Luffy has infiltrated the [[TheAlcatraz Impel Down prison]] in order to free his older brother who's being held on the lowest level. During the infiltration he ended up "teaming up" with two former enemies (Buggy the Clown and Mr. 3) who are constantly trying to go up and out, only seeing Luffy as a means to distract the guards. But, through various mishaps they end up falling down to the lower levels anyway and find themselves forced to co-operate in order to stay alive.]]
** [[spoiler:In Level Six of the prison: Luffy teamed up with Crocodile. Let me say that again: ''Luffy'' teamed up with '''''Crocodile'''''. This is another one-sided Enemy Mine situation, though. Crocodile's willing to work with Luffy, but he's evil enough that Luffy is highly reluctant to take him along. Mr. 1 also joins them, but Luffy never met him before, and doesn't know who he is. Of course, Impel Down is [[HellholePrison such an awful place]], if ''anything'' warranted an EnemyMine with ''any'' of Luffy's old foes, ''this'' would.]]
*** Taken UpToEleven in the Whitebeard War arc. [[spoiler:Crocodile protecting Luffy, fighting alongside the Whitebeard pirates, and generally being the closest thing to altruistic he's ever been thus far. Buggy fights on Luffy's behalf (even if Luffy forced him into it). This war is absolutely crazy in the temporary partnerships it has formed.]]
** Earlier on, Luffy's crew, the Galley-La company, and the Franky Family, despite having fought in a three-way battle before, team up when they realize that they're facing the same enemy, albeit for different reasons (rescuing Robin, dealing with Iceberg's assassins and preventing Pluton's revival, and saving Franky, respectively). Then again, the Galley-La crew had been fighting the Straw Hats under the mistaken belief that they were responsible for the attempt on Iceberg's life, which they just realized.
** Luffy and his crew have also had to team up with Smoker and Tashigi a few times due to circumstance, once during the Alabasta Arc and once in [[spoiler:Punk Hazard]]. Though it should be noted that they're [[HeroAntagonist not villains per se]], just Marines that would very much like to capture the Straw Hats.
*** During the Punk Hazard arc, [[spoiler: there's actually ''two'' Enemy Mine situations: the Straw Hats form an alliance with Trafalgar Law (and by extension, his crew) to capture Caesar Clown and take down one of the Yonko (Kaido, to be exact), and both groups end up teaming up with Smoker and Tashigi again, this time to rescue the children Clown had kidnapped and escape the island safely.]]
EnemyMine/WebVideo
* In ''Manga/RanmaOneHalf'', several Enemy Mine alliances emerge among the various members of the LoveDodecahedron. Shampoo, Ukyō and Kodachi regularly team up against any external threat to Ranma (or a new potential suitor). Ranma himself teams with Ryōga and Mousse against Prince Herb. Ranma and Ryōga do this often enough that they inch into FriendlyEnemy territory by the end of the series.
** And inverted with Ryōga and Mousse in the anime: although they aren't enemies when they initially team up against their common enemy Ranma, by the end of the episode, they work so poorly together that they can't stand each other. The fact that Mousse is far more ruthless than Ryōga, and also has no qualms whatsoever about hurting others to get rid of Ranma -- even Akane Tendō, Ryōga's [[AllLoveIsUnrequited oblivious crush]] -- does not help matters.
EnemyMine/WesternAnimation
* In the Three-Tails filler arc of ''Manga/{{Naruto}}'', Naruto ends up working with [[spoiler:Guren]] to [[spoiler:escape the inside of the Three-tailed beast]]. The fact that they both have an interest in [[spoiler:Yukimaru's welfare]] and neither wants to see the Akatsuki get the beast helps, too.
** This is also the reason for the very existence of the shinobi alliance, rival nations working together to stop [[spoiler:[[EvilFormerFriend Obito Uchiha]] from executing his [[AssimilationPlot moon's eye plan]]. Though by the end the alliance is in FireForgedFriend territory, as fighting on the same side made most of them (including the leaders) realize that they're NotSoDifferent.]]
** Even Kurama joins in. He even spells it out [[LesserOfTwoEvils loud and clearly]]. [[spoiler: Then he [[HeelFaceTurn befriends Naruto for real]], making both of them stronger.]]
*** A similar situation happens in TheMovie, with Naruto quoting the proverb in response to Kurama offering to help him battle [[spoiler:his AlternateUniverse equivalent]].
* In one of the ''LightNovel/HaruhiSuzumiya'' short stories, the SOS Brigade has to team up with their perceived rival club the Computer Society, in order to stop the plans of the [[PunchClockVillain nefarious]] StudentCouncilPresident from evicting the Brigade from their clubroom.
* Occurs twice in ''Manga/KenichiTheMightiestDisciple'', in Kenichi's last battles against Hermit (a.k.a. [[spoiler:Natsu Tanimoto]]) and Boris Ivankov. Both times, a problem occurred to interrupt the battle, and Kenichi would team up with the person he had been fighting moments ago to resolve it, mostly because one party (Hermit in the first, Kenichi himself in the second) didn't want their opponent to get injured and thus be unable to finish the battle. Naturally, the instant the problem is resolved, both cases have Kenichi and his enemy resume the battle, but [[HeelFaceTurn Hermit at least would later become a full-time ally]] (Boris may do so as well in the future, but for now, he's been PutOnABus).
** The most recent arc has had [[spoiler:Akira Hongo, YAMI's "God Fist"]] joining forces with Ryozanpaku to get revenge on YAMI's "Demon Fist" [[ManipulativeBastard Silcardo Jenazad]] [[spoiler:[[MoralEventHorizon for using him to almost kill Kenichi]] during his fight with Sakaki (which Silcardo did for the purpose of kidnapping Miu to brainwash her into a FaceHeelTurn)]]. Not only that, but [[BigBad the "One Shadow" leader of YAMI]] even gets in on the act, albeit not directly; in his case, though, the team-up is somewhat justified [[spoiler:[[PapaWolf because he's Miu's father]]]].
* Sara and the Space Squadron make amends with Mariette and her Gambee pilot brigade (sorry, but it doesn't have a name and both common {{fan nickname}}s exceed this wiki's age rating) to defend the Libertad in the end of ''Anime/StrainStrategicArmoredInfantry''.
* In the finale of ''Anime/NightWizard'', after spending the entire show chasing the heroes, Bell Zephyr ends up fighting alongside them to defeat the true BigBad.
* Pixie Misa does this twice in ''Mahou Shoujo Anime/PrettySammy''. In the '''same episode'''. Misa and Sammy also team up briefly in the second and third [=OVAs=].
* All the non-Shinryuuji Naga players on Team Japan and Agon in ''Manga/{{Eyeshield 21}}''. And to a lesser degree, all the non-Hakushuu Dinosaurs players and Gaoh (especially Kid, Hiruma and Banba).
* At one point in ''Anime/EurekaSeven'', [[KidHero Renton]] and [[AntiVillain Dominic]] are forced to work together to save Eureka and Anemone.
* Two examples from ''Manga/SoulEater'':
** In order to further her plans, Medusa joins forces with Shibusen and leads a team to infiltrate Baba Yaga castle, the Arachnaphobia base.
** Werewolf Free and shinigami Death the Kid fight Mosquito together. Neither are happy about the idea.
* During a match in the individual tournament in ''Manga/{{Saki}}'', everyone in the table gangs up on Saki, despite one of them being her own teammate (although said teammate mentally notes that they are in competition with each other and Saki promised not to hold back). [[spoiler:It doesn't work.]]
** In ''Manga/SakiAchigaHen'', this happens in the semi-finals, when Toki, Kirame and Kuro go up against Teru, the champion of the mahjong tournament, in order to avoid going below 0 points, resulting in some unspoken cooperation between Kirame and Toki, with Kuro unwittingly helping by preventing Teru from getting dora and making it more difficult for her to increase the value of her hands. In the end, [[spoiler:Kuro breaks Teru's winning streak, and while Teru ends the first round with an overwhelming lead, it's eventually reduced to the point at which her school barely advances]].
** A more complicated example comes up in Kiyosumi's turn at the semi-finals. At the start of the third round, Rinkai and Himematsu have a comfortable lead, while Kiyosumi is a distant third, and Usuzan is dangerously close to being eliminated. Knowing that if Usuzan goes under while Kiyosumi is still in third place, they'll both be eliminated, Hisa decides to protect Usuzan's points while winning off Himematsu and Rinkai. Unfortunately for Hisa, Usuzan's third player realizes that it's just as advantageous to win off Kiyosumi as the other two.
* In ''Manga/FullmetalAlchemist'', Envy works briefly with Ed and Ling when they have to get out from Gluttony's stomach.
** Then he goes OneWingedAngel and tries to kill them...
*** Which was ''before'' Ed had realized that he could get them out.
** Ed joins forces with [[spoiler: Greed-- albeit under the condition of "working for" him-- after Greed [[HeelFaceTurn splits off from the Homunculi.]]]]
** Scar joins up with the protagonists when they have to defeat Father. Envy lampshades the absurdity of it all. "''What?! You're friends now? You guys are no fun at all! Ugh! What happened to trying to crush each other's windpipes?!''"
* In ''Manga/{{Spriggan}}'', Spetsnaz officer Victor Shutrov (or Stolov, based on the Singaporean English translation) tries to kill Japanese KGB agent Koichi Moroha when he learns of his plan to dominate the world via the Fire Shrine and not on behalf of the USSR, helping Yu somewhat. He's killed later, not being able to stop the renegade agent. Yu and Jean team with two of their enemies near the end of the manga. They consist of Iwao Akatsuki, ex-Trident Corporation commando, and Bo Brantz, ex-Neo Nazi and ninja, to defeat Larry Markson from using the natural energy of Gaia in the South Pole.
* In ''Manga/{{Berserk}}'', Guts and Zodd have an [[CrowningMomentOfAwesome AWESOME one of these]] when they temporarily [[spoiler:team up against the Emperor Ganshika, who is a giant fog/storm cloud apostle. Naturally, they do it in the most badass way they can. Schierke finds Ganshika's "core", the only really physical spot in his apostle form, but says that only a powerful magical weapon can do anything. Guts has been slaughtering demons, apostles, and other nasty spirits every single day and night, for about three years straight, with his BFS and so all that pain and hate has made it a magical weapon. Zodd, in demon form, lets Guts ride on top of him, and they use the Dragonslayer to ram Ganshika's 'core'.]]
* Even though catching the Kaitou Kid is one of ''Manga/DetectiveConan'''s chief aims, second only to busting up the Black Organization, Conan often ends up working together with Kid to catch bad guys or otherwise avert disaster, especially in his Non Serial Movie appearances. (For that matter, he has occasionally worked together with Black Organization agents against other Black Organization agents, as well.) His TV-special team-up with Lupin III would probably count as well.
* [[NobleDemon Kougaiji's]] [[MinionWithAnFInEvil team]] and the Sanzo party do this or help each other out in some way so often in ''Manga/{{Saiyuki}}'' that Kougaiji's "it would be unfair to attack you now but next time we will get the scripture" is met with "yeah, yeah we know."
** Happens accidentally with comedic villain Zakuro. Goku--who wasn't around for Zakuro's first appearance and has no idea who he is--helps him when he's passed out from hunger, and Zakuro tries to repay him by defending him from a group of random youkai thugs. Zakuro is ''horrified'' when he realizes who Goku is, especially when the rest of the party show up and cheerfully tell the youkai that Zakuro has totally come over to their side.
* In the final 3 chapters of ''Manga/{{Psyren}}'', Yoshina Ageha teams up with [[spoiler: Amagi Miroku against Mithra.]]
* In ''Manga/InuYasha'', anytime Inuyasha and [[AloofBigBrother Sesshomaru]] team up, this happens, though at the end of each scenario Sesshomaru walks off just a little more of an AntiHero than before.
* In the final episode of Manga/GiantRobo, [[spoiler: Alberto]] suddenly appears to rescue Daisaku. He deems it necessary to point out he hasn't made a HeelFaceTurn, it's just that they have a mutual enemy.
--> '''[[spoiler: Alberto]]''': Let's get something straight, kid. I'm not doing this to help you, your buddies, or because saving humanity gives me a warm fuzzy feeling. I may not be privy to all the deep dark secrets behind this covert operation, but I'm positive about one thing: I will be DAMNED if I watch from the sidelines while [[BigBadWannabe this megalomaniacal adolescent]] determines the outcome of the world! [[TheOnlyOneAllowedToDefeatYou That fate will be decided at another place and time, in a final showdown between Big Fire and you IPO vigilantes!]]
* In {{Sekirei}}, [[PragmaticVillainy Higa of the East]]'s repeated attempts at violating the rules of the game drive [[FairPlayVillain Mikogami of the South]] to come to the rescue of [[TheHero Minato]] on more than one occasion.
* ''Manga/AttackOnTitan'' discusses the whole idea of the whole of humanity settling its differences with each other to fight a common enemy, finding it overly optimistic. Indeed, even in the story, with humans on the brink of extinction against such an enemy, [[SubvertedTrope there's]] [[WeAreStrugglingTogether still plenty]] [[TeethClenchedTeamwork of infighting.]]
* ''Manga/{{Bleach}}'':
** During the battle for Karakura Town, the Visoreds team up with the Shinigami, despite having once been exiled from Soul Society, because Aizen is the reason they were exiled. However, they make it clear to the Shinigami that they're not Soul Society's allies. They are there because Aizen is their enemy and Ichigo is their ally. Upon Aizen's defeat, the Visoreds are accepted back into the Soul Society.
** Hollows are enemies of Humans, Shinigami and Quincies, and Aizen recruits Hollows to fight against Soul Society. In the final arc, the surviving Hollows from Aizen's war with Soul Society, team up with the Shinigami to fight the Quincies, who have conquered both Hueco Mundo, the Hollows domain, and the Soul Society, the Shinigami domain. They are also working with Humans, such as Ichigo's group and Fullbringers. Eventually, even some of the Quincies switch sides when they begin to realise what Yhwach's plans really are. [[AGodAmI Yhwach]] is such a threat to existence itself, he's basically uniting all four enemy groups, and any exiles from those groups, against him.
* At one point in ''LightNovel/FullMetalPanic'', [[TheHero Sousuke]] comes upon [[BigBad Leonard]] and pulls his gun -- but Leonard points out that they're both in the same predicament (trapped in an old laboratory by rubble) and proposes they call a temporary truce and work together to dig themselves out, to which Sousuke agrees. During this time Leonard tries to talk Sousuke into joining his side, but is (obviously) unsuccessful; the truce lasts until they get back to their respective HumongousMecha.
* In episode 3 of ''Anime/BladeAndSoul,'' the Pleasure Gang saves Alka from the BountyHunter, Hazuki, trying to collect on a bounty of 7000 gold from the Palam Empire. Their leader, Dan Roana, has no love for Palam either, and many of their friends and relatives were killed by them, so she suggests they work together to get their payback.
* This happens far more than it should in ''Manga/ZettaiKarenChildren'', where [[TheHero BABEL]] and [[BigBad PANDRA]] team up on occasion, mostly when fighting [[spoiler: Black Phantom]]. Also happens in ''Anime/TheUnlimitedHyoubuKyousuke'', where they team up to defeat the USEI.
* In ''Animation/GuardianFairyMichel'', episode 14, with both Salome and Michel kidnapped, has Kim and the Black Hammer Gang work together to free them.
** Episode 23 has a long-dead evil pharaoh with magical powers arising to kill the heroes, forcing Michel and Salome to team up against him.
* Natsu and [[spoiler:Gajeel]] teaming up against Laxus in ''Manga/FairyTail'', though it's more "rival mine" since they were supposed to be in the same guild by then.
* Gainax's teaser for the ([[WhatCouldHaveBeen never-realized]]) second season of ''Anime/PantyAndStockingWithGarterbelt'' suggested that, after the ShockingSwerve GainaxEnding, the Demon Sisters would be teaming up with the heroes in order to fight the bigger threat: [[spoiler:Demon Stocking (and presumably their father Corset as well).]]
[[/folder]]

[[folder:Comic Books]]
* ''ComicBook/XMen'': ComicBook/{{Magneto}}, always referred to as the BigBad, is the first person the heroes team up with when someone worse comes along.
** Particularly in the [[WesternAnimation/XMen 90s cartoon]], most notably in a season-long storyline in which he and Professor Xavier are stranded together in the [[LostWorld Savage Land]].
** The brilliant ''X-Men'' graphic novel ''ComicBook/GodLovesManKills'' was the basis for ''X2'', and thus follows the same plot except that, since the comics have been going on long enough that they didn't feel the need to hammer home his villainy, Magneto doesn't really have a SnapBack the way he does in the movie.
** And in ''God Loves, Man Kills II'', released to tie in with ''X2'', the X-Men find themselves teaming up with the villain from the original.
** Magneto has worked with the X-Men in multiple story lines, even becoming the leader in one story arc. This is because, for most writers, Magneto isn't as much a bad guy as he is a WellIntentionedExtremist.
** It wasn't just for one arc. In the late 1980s, due to Charles Xavier being absent, a reformed Magneto took over Xavier's School for Gifted Youngsters for something like four years (in real world time). If you were reading X-Men and ComicBook/NewMutants back then, Magneto as the head of the Xavier school felt like a new status quo.
* Loki is willing to fight on Thor's side pretty much any time Asgard is under attack; his goal is to rule it, after all, and he can't rule it if it's demolished. Also, in the Spider-Man comic "The Coming of Chaos", he was willing to team up with Spider-Man in order to [[PapaWolf save his mortal daughter, who had become possessed.]]
* Franchise/{{Spider-Man}} examples.
** Spidey and ''[[ComicBook/DoctorOctopus Doc Ock]]'' ended up working together at one point, in order to deal with a new villain (Carlyle) who used Ock's arm technology to build a bank-robbing powersuit. While simply being robbed wouldn't have been enough to put Ock on the side of his mortal enemy, there was also the fact that Carlyle was threatening Ock's former fiancée, known to Spider-Man fans as "Aunt May". (Truthfully, Aunt May being endangered wasn't really a factor in the fight. It didn't do anything except surprise Doc Ock for a moment and lead to a very funny ''Film/TheRockyHorrorPictureShow'' joke. Spidey came into the fight late as Doc Ock was already going after Caryle for stealing his tech and trying to kill him. To Doc's credit, he ''DID'' stop a building from collapsing just long enough to allow the innocent civilians to escape at Spidey's prompting. That did nothing to ''STOP'' him from letting the building collapse on Spidey, noting "you are not a civilian". Doc Ock also wasn't happy about the inadvertent team-up, later noting (as he told Spidey the weakness in Caryle's armor), "I am not helping you -- I am hurting him." World of difference.)
** It wasn't even the first time Spidey and Ock teamed up, since they also set aside their differences when Hammerhead kidnapped Aunt May. Spider-Man wanted to rescue Aunt May because she was one of his loved ones (along with the fact that he was ''[[TheHero Spider-Man]]'' after all), while Doc Ock wanted to marry May so he could gain access to a nuclear power plant she had inherited.
** Comicbook/{{Venom}} and ComicBook/{{Carnage}} hate each other more than they hate him. Any time Carnage pops up, Venom will call a truce with Spider-Man to go whale on Carnage. This most famously occurred in the storyline ComicBook/MaximumCarnage, which was adapted into a Sega Genesis and Super Nintendo game. Also, In the oddly-named "Venom vs Carnage" comic, after Carnage produces a new symbiote, he and Venom decide that, in the end, they hate the ''new'' symbiote even more than they hate each other (it's implied in Carnage's case that this is part of symbiote biology). The result? Their only teamup. Venom calls it "Temporary. VERY temporary."
** In one of the most memorable stories of ''ComicBook/{{Inferno}}'' that didn't involve the [[ComicBook/XMen mutant teams]] in the main storyline, Spidey fought alongside J. Jonah Jameson to defend ''The Daily Bugle'' against the invading demon horde. It was little wonder that the writers named the story [[ExcitedShowTitle "When the Bugle Blows!"]]
** In the one shot comic ''Spider-Man Dead Man's Hand'', Spidey and his old enemy the Tinkerer cooperated for mutual benefit after the third Carrion infected New Yorkers with a disease that made them zombie-like minions. (The Tinker was working on a teleportation device for the Enclave that Spidey needed to get to Wungadore quickly, as he knew the High Evolutionary might have inside information on the plague, and the Tinkerer was willing to help, seeing as his son was one of the victims of said plague.)
* In Marvel's ''ComicBook/SecretInvasion'' mega-event, [[spoiler: the villain mastermind ComicBook/TheHood sends his forces into battle to save the Earth from the Skrulls]].
** He has his own reasons for this: [[spoiler:it helps ComicBook/NormanOsborn in his ploy to take over SHIELD and instigate the Comicbook/DarkReign]].
*** Actually, it's implied that [[spoiler:The Hood had no idea of Osborn's plan, until he called together the Cabal for the first time. The Hood would have let the assembled forces fight the Skrulls, if not for the simple fact that if the Skrulls destroy the Earth, ''they destroy his business''.]]
* Cassie and Film/{{Ch|ildsPlay}}ucky in ''Comicbook/HackSlash Vs. Chucky''.
* This was the [[InvokedTrope driving force]] behind ''Comicbook/{{Watchmen}}'''s ending, both the original comic and the film adaptation (though the common enemy in each was completely different).
* In the comic book series ''ComicBook/ElfQuest'', when two elf tribes -- the Wolfriders and the newly-introduced Go-Backs -- join forces to wage war against the trolls of King Guttlekraw, the elves form a grudging alliance with the trolls formerly led by the late King Greymung, who have been enslaved by Guttlekraw, even though Greymung's trolls have been the hated enemies of the Wolfriders ever since betraying them back at the start of the storyline. The Go-Backs, meanwhile, would never have thought of teaming up with trolls of any kind, period... But it's probably only because of this uneasy alliance that Guttlekraw's trolls are defeated.
* In the 1970s, two issues of ''ComicBook/TheBraveAndTheBold'' featured Franchise/{{Batman}} teaming up with SelfDemonstrating/TheJoker to solve a crime. In #111, they worked together to solve the mass murder of an upstanding local family, which someone had sloppily tried to pin on the Joker. In the end, it turned out that [[spoiler:the whole thing was an elaborate plot between the Joker and the killer to lure Batman into a {{Deathtrap}}]]. In #191, the Penguin is murdered and it looks like the Joker did it. When Batman catches up to him, he proves that he couldn't have done it. It is eventually revealed that [[spoiler:the whole thing was a FakingTheDead by the Penguin, who used it to kidnap a local cardinal]].
* In the Marvel ''[[ComicBook/TheTransformers Transformers]]'' comic, Ratchet and Megatron teamed in an early episode to bring down Shockwave. Megatron, naturally enough, tried to betray Ratchet, but Ratchet was prepared.
** Several years later, during the "Space Pirates!" story in the UK comic, the Autobots and Decepticons join forces to repel the Quintessons, who are trying to conquer Cybertron before Quintessa explodes. Ultra Magnus and Soundwave even get a BackToBackBadasses moment. At the end, Soundwave briefly considers the idea of a lasting peace, but realizes the two factions have come too far to ever resolve their differences.
*** The Autobots and Decepticons were forced to team up ''again'' against the Cybertronian Empire, a faction of hyperevolved Decepticons who had abandoned Cybertron eons ago to create a star-spanning empire of their own. They consider the Autobots and the original Decepticons to be disgusting savages, and eventually returned to destroy their "lesser" brethren.
** Another storyline had Starscream come in contact with a cosmic power source called the Underbase, which made him so powerful - not to mention drove him to madness - that the Autobots and Decepticons were forced to team up to stop him. Notably, they were not able to - overdosing on the Underbase's power eventually destroyed Starscream.
* At the end of ''ComicBook/FinalCrisis'', Superman is facing the Female Furies and the Justifiers. Who saves him and reverses the Anti-Life Equation? Lex Luthor and Dr. Sivana.
-->'''Lex:'''"Not a single word, Superman. We'll call this the Historic First Team-Up of the forces of "Good" and the forces of "Bad". And I'll take the credit for the win"
-->'''Superman:'''"Whatever you say, Lex. Whatever you say."
* ComicBook/TheSupermanAdventures has Superman forced to go to Lex when ComicBook/{{Supergirl}} falls deathly ill.
* ComicBook/{{Paperinik|NewAdventures}} (WesternAnimation/DonaldDuck's superhero alter ego) is forced to work together with a notorious time pirate known as The Raider early on in order to save a large part of Duckburg from being destroyed. Later on, they actually find themselves in EnemyMine situations so often that they build up a strange kind of friendship. The Pikappa reboot has a full story centered around this, with Donald teaming up with the Evronian Soldier Ekdon to take down a StarfishAlien, which the Evronians once planned to use as a LivingWeapon against the [[SpacePolice Guardians of the Galaxy]], being motivated in the bigger picture against the Imperial Adviser Gorthan (revealed to have been Bitter Rivals with Ekdon, [[KlingonPromotion having gotten rid of him to ascend in the Evronian Hierarchies]]. Lampshaded by the Hero near the end "The best ally is an enemy who has a score to settle with your own adversary".
* In ''Cosmic Odyssey'', [[Comicbook/NewGods Darkseid and Highfather]] team up, recruiting Franchise/{{Superman}}, Franchise/{{Batman}}, and various other DC Universe heroes to prevent the [[EldritchAbomination Anti-Life Entity]] from [[TheEndOfTheWorldAsWeKnowIt destroying the entire galaxy]]. [[SarcasmMode To everyone's great surprise]], {{ComicBook/Darkseid}} [[ChronicBackstabbingDisorder betrays his newfound allies]], only to be stopped by Batman's BetrayalInsurance.
** This was hardly the first or the last time that {{ComicBook/Darkseid}} pulled one of these. In ''Comicbook/CrisisOnInfiniteEarths'', for example, he ended up being instrumental in finally defeating the Anti-Monitor (but making it very clear he was only doing it not to help the heroes or anything, but rather to ensure that the Anti-Monitor wouldn't destroy everything).
** Darkseid did the same thing with Imperiex.
* Circumstances have forced [[ComicBook/TheMightyThor Thor]] to team up with members of his RoguesGallery, including [[MagnificentBastard Loki]], [[MoreExpendableThanYou the Executioner]], and [[DatingCatwoman the Enchantress]].
* In the ''ComicBook/DarkwingDuck'' comic revival, Steelbeak teams up with Darkwing to stop [[BiggerBad F.O.W.L. High Command's]] plan to unleash [[EldritchAbomination Duckthulu]], because EvenEvilHasStandards.
* ''Comicbook/FantasticFour'':
** [[spoiler:After the death of the Human Torch]], Doctor Doom and Reed Richards have ''very'' reluctantly agreed to work together in the Future Foundation. This arrangement was brokered by Reed's genius daughter Valeria who convinced Reed that the FF needed someone as ruthlessly pragmatic as Doom if they were going to save the world. She got Doom on board by [[spoiler:promising to help undo the brain damage the Intelligensia inflicted on him in ''ComicBook/FallOfTheHulks'']].
** Not the first time Doom has teamed up with his enemies. An early story arc had him actually leading the FF against the villain known as Over-Mind.
* Franchise/{{Superman}} and ComicBook/LexLuthor are in conflict almost all the time, and loathe each other with a vengeance, but they share a near-fanatical adoration for and protectiveness of their home city of Metropolis. This has caused them to put aside their differences, abandon their other objectives, and team up to take down villains bent on destroying their beloved city more than once.
** They've even saved the world together more than once. Lex ends up doing almost as much good as he does evil.
* In the final issue of Creator/PaulCornell's ''Knight And Squire'', ''everyone'' in the British super-community teams up to take down SelfDemonstrating/TheJoker. The heroes, the anti-heroes, the {{Harmless Villain}}s and the killers like Death Dinosaur. He's just that much of a threat.
* In ''ComicBook/ArchieComicsSonicTheHedgehog'', the Freedom Fighters team up with their enemies against a common threat so often that Sonic's started {{lampshad|eHanging}}ing it. At different points throughout the series, they've teamed up with [[BigBad Robotnik/Eggman]], [[TheStarscream Snively]], their [[EvilTwin Suppression Squad]] counterparts, the [[QuirkyMinibossSquad Destructix]], the [[MachineWorship Dark Legion]], [[EvilSorcerer Ixis Naugus]], and Dr. Finitevus. They usually end up getting backstabbed in these situations, to the point that Sonic's started lampshading ''that'' too.
** More recently, we've had a non-Freedom Fighters examples, as the AntiHero Babylon Rogues teamed up with their rivals the Battle Bird Armada to find their ancestral homeland of Babylon Gardens -- ironically, this puts them in opposition to the Freedom Fighters, as the entrance to the Gardens is apparently in their home of New Mobotropolis.
* Happens on a massive scale in the ''Series/{{Farscape}}'' comic book arc "The War for the Uncharted Territories", when essentially all the factions in the Uncharted Territories have to put aside their rivalries and join forces in order to stand the slightest chance of defending against conquest by the Kkore, which up until then has been defeating everyone in CurbStompBattle[=s=].
* One story-arc in the ''ComicBook/CaptainAmerica'' comic has Cap teaming up with the ''Red Skull'' of all people in order to stop a resurrected Hitler from taking control of the [[AppliedPhlebotinum Cosmic Cube]]. Incidentally, this would lead Cap to [[NoGoodDeedGoesUnpunished being briefly exiled from the United States]], since the U.S. government assumed he had turned his back on America by aligning with the Skull.
** Another time, Diamondback of the Serpent Society sought Cap out when the Viper (Madame Hydra) instigated a hostile takeover of the Society so she could use them to turn the population of Washington, D.C. into SnakePeople. The Captain and his allies helped Diamondback and other Society members still loyal to its founder, Sidewinder, in stopping Viper and reversing the effects of her snakeification of the Capital. This led to Diamondback's HeelFaceTurn and Sidewinder's retirement.
* In an ''Infinities'' (a what-if brand) issue of Franchise/StarWars, specifically the one taking place during the Mortis Arc of ''WesternAnimation/StarWarsTheCloneWars'', of all people, Yoda and ''Darth Sidious'' (the latter presumably having revealed his Sith identity to Yoda) had to forge a temporary alliance to stop Anakin Skywalker, who became exceptionally powerful via the Dark Side thanks to the Son. The allegiance did them no good, though, as Anakin effortlessly killed them.
** Written long before that, Comicbook/MarvelStarWars has some examples. In one comic Leia and one single stormtrooper from Alderaan are the only respective survivors of disaster on both sides; the stormtrooper claims to be taking her prisoner but by the time anyone finds them it's not the case anymore. In the ''World of Fire'' arc, Luke and Leia and a small party of Imperials team up to try and shut off a lethal planetary security system; here, it starts with the Imperials making a threat-offer, but the head of the group soon feels they're trustworthy and starts getting friendly, while one of his men plans to kill them.
* The ''Three Amigos'' storyline in ''ComicBook/JudgeDredd'' is purely an excuse to team him up with his nemeses, Judge Death and Mean Machine Angel. The creators themselves considered this VillainDecay for Judge Death in particular (who's known mainly for killing everything in sight).
* The {{ComicBook/Daken}} and ComicBook/{{X 23}} crossover involved this. Daken was initially working with Malcolm Colcord, while playing all the other parties against one another in pursuit of his own goals. However once Colcord's intent to recreate Weapon X is revealed, Daken and Laura throw in together to bring him down. Unlike Daken's relationship with their [[{{Wolverine}} father]], the team-up results in them becoming FriendlyEnemies when they realize they're NotSoDifferent.
* ''ComicBook/{{Infinity}}'': A large number of nominal enemies -- including the Kree, Skrull, and Shi'ar empires, as well as the Avengers -- unite to counter the threat that the Builders pose to the whole universe.
* ''ComicBook/ForeverEvil'': Lex and his "Legion of Doom"-esque alliance fighting back against the larger, more encompassing threat the Crime Syndicate poses.
* In IDW's [[ComicBook/TheTransformersMegaseries Transformers comics]], the threat of [[TheJuggernaut Thunderwing]] was bad enough for the Autobots and Decepticons to team up to try and stop him. Both times, in fact. And it still barely slows him down.
* In ''ComicBook/TheMultiversity'', Superdoomsday wrecked havoc on several Earths, but because he and his fellow Overcorp stooge are the only champions of Earth-45, Harbinger is forced to summon them in the final battle alongside several superhero teams he had previously wronged. Members of the Earth-10 New Reichsmen and Freedom Fighters are likewise recruited. However, due to the sheer immensity of the conflict, these antagonistic groups have little opportunity to lock horns.
* In ''ComicBook/{{Sojourn}}'', Arwyn and Gareth find an unlikely alliance with a dragon against Mordath.
* The DC run of ''ThePowerpuffGirls'' introduced the Micro-Puffs, three sprite avatars of the girls who show up to cause trouble. In "Micro-Managing" (issue #64), the Micro-Puffs brainwash Buttercup and Bubbles into thinking they should be the PPG leader (it doesn't work on Blossom since she's ''already'' the leader). Blossom gets help from Mojo Jojo, who counters with Mini-Micro Puffs who drive the Micro-Puffs absolutely crazy. (Mojo's motive for helping was because he didn't get a Micro-Mojo). It ends with Mojo and Blossom shaking hands in the pulsating hearts panel.
[[/folder]]

[[folder:Fan Works]]
[[AC: ''Manga/{{Bleach}}'']]
* In ''FanFic/HogyokuExMachina'', Yoruichi is surprised when she finds out that the Vizards fought alongside Soul Society against [[BigBad Aizen]] in the [[TimeTravel original timeline]], since they have no reason to like them. [[TheSmartGuy Ishida]] suggests it was because of this trope.

[[AC: ''Comicbooks/{{Batman}}'']]
* In Fanfic/AngelOfTheBat, Stephanie/Spoiler struggles to bring Red Hood to her cause of [[spoiler: saving Cassie]] because it will mean they will be closer to bringing down their mutual enemy The Seraphim. It doesn’t work [[spoiler: at first. Batman eventually breaks Jason’s resistance personally.]]

[[AC: ''ComicStrip/CalvinAndHobbes'']]
* [[CardCarryingVillain Dr. Brainstorm]] tries to {{def|iedTrope}}y this twice in ''Fanfic/CalvinAndHobbesTheSeries''. Both times, he ends up playing it straight.

[[AC: ''WesternAnimation/ChipNDaleRescueRangers'']]
* ''[[Fanfic/TheNowakverse Under the Bridge]]'': Widget has taken several attempts at killing Gadget. Now Chip calls her on her submarine ''Albacore'' on the radio, alerting her that Gadget is out to attack and sink ''Albacore'' with a self-made, air-dropped torpedo. But the call comes in time: A young squirrel from Widget's crew named Andy injured an ankle on an unprotected chain, and now Widget needs Gadget and her aircraft to take him to a hospital. Meanwhile, when Widget comforts Andy, this also helps trigger her HeelFaceTurn.

[[AC: ''Literature/ChroniclesOfNarnia'']]
* In ''FanFic/{{Carpetbaggers}}'', when the newly-crowned Pevensies need backup to fight a horde of the Witch’s creatures, they recruit the rebels who were holed up in the castle bullying and blackmailing local Narnians.

[[AC: CrossOver]]
* ''Fanfic/ThousandShinji'': Discussed. Asuka suggests that she and Rei should team up (because Shinji enjoys annoying Asuka and Rei likes annoying Shinji), citing the "The enemy of my enemy is my friend" sentence. Rei gets surprised because Shinji has a different version: "The enemy of my enemy dies next."
* This happens in the Naruto/Justice League crossover ''Fanfic/ConnectingTheDots'' when Naruto and Sasuke team up against a REALLY big threat.
* ''FanFic/BurningBlack'': Anti-Cosmo, and by proxy every anti-fairy he commands, allies with Team Turner against Remy and [[spoiler:[[TheManBehindTheMan the Pixies]]]] in Act 3. He even outlaws the use of bad luck on Timothy directly; indirect bad luck is still fair game. The relationship is creeping into FriendlyEnemy territory, which makes Cosmo and Wanda very nervous as Timmy's exposure to anti-fairies affects his personality and allows him to use black magic while giving him immunity to anti-magic waves.
* In ''FanFic/{{Fractured}}'', a ''MassEffect''[=/=]''StarWars''[[spoiler:[=/=]''[=Borderlands=]'']] [[MassiveMultiplayerCrossover crossover]] and its sequel ''[[FanFic/SovereignGFCOrigins Origins]]'', this is attempted several times. Whether it works is another matter.
** Unlike [[VideoGame/MassEffect3 canon]], Samantha Shepard is ''not'' able to pull this off with the whole galaxy when the [[EldritchAbomination Reapers]] arrive, thanks to a TechnologyUplift [[NiceJobBreakingItHero gone wrong]] that causes [[FantasticRacism existing tensions]] to get worse rather than fade away in the face of a common foe.
** The Citadel Council attempts to manage this through Aria T'Loak in the Terminus by having her unite the various mercenary factions to fight [[spoiler:Flood]]. It works in that the mercenaries cooperate, but their efforts fall flat.
** Garrus Vakarian ''tries'' to accomplish this by [[BatmanGambit causing an arms race]] in the CorporateWarfare taking place around him, but it fails on two fronts: the corporations distrust each other and there [[YouRequireMoreVespeneGas aren't enough resources]] for this to work even if they did.
** The heroes tend to view Sarah this way initially--she did kill millions of people even if it was for a [[WellIntentionedExtremist good reason]]. [[spoiler:Flood invasions are generally bad.]]
* ''Fanfic/SOE2LoneHeirOfKrypton'': The first time that ''[[Comicbook/{{Supergirl}} Asuka]]'' and ''[[Comicbook/WonderGirl Rei]]'' are on the same battlefield is during the Brainiac crisis. The first time they have to work together is when Parasite kidnaps them both to use as "power chargers". Asuka finds a lot of respect for Wonder Girl on that day-time will tell if they become FireForgedFriends.
* ''FanFic/ADarkKnightOverSinCity'' features Franchise/{{Batman}} and the [[AntiHero anti-heroes]] from SinCity teaming up together and with other criminals in order to achieve their goals.
* ''FanFic/AShadowOfTheTitans'': Jinx briefly teams up with the Titans after Mumbo captures both Jade and Starfire and forces them to be his "assistants". Jinx describes it as "sharing a mutual problem", and as soon as Mumbo is defeated she grabs Jade and runs off.
** The possible BadFuture glimpsed in the "[[MindScrew Destiny]]" interlude has another apparent example: [[spoiler: whatever "[[NamesToRunAwayFromReallyFast Omega]]" is, it's so bad that the Demon Sorcerers and the Eight Immortals team up with each other and [[FutureBadass Good!Jade]] to stop [[FutureMeScaresMe Evil!Jade]] from releasing it.]]
** Jade and Raven teaming up against the Master of Games.
* ''FanFic/TheEquestrianWindMage'':
** The denizens of [[VideoGame/StoryOfTheBlanks Sunnytown]] -- minus Grey Hoof and the Bone Fiends, who are [[VillainTeamUp working with Ganondorf]] -- ally with the Mane Six and Vaati in order to retrieve the Element of Honesty.
** The fact that Ganon is oppressing ''everyone'' in Equestria leads to alliances with the Diamond Dogs and Changelings against him.
* ''Fanfic/TheBridge'': Monster X and the Sirens are forced to team up when Enjin shows up and tries to kill them all.

[[AC: ''Manga/DeathNote'']]
* In the CrackFic ''Fanfic/AllYouNeedIsLove'' Light seeks help from L and Naomi Misora after [[HilarityEnsues "misplacing" a Death Note.]]
* In ''FanFic/ACureForLove'' [[ArchEnemy Light/Kira considers L]] to be his "partner" in destroying the [[WesternTerrorists Astraea Organization]] [[spoiler: [[HijackedByGanon at first, before he usurps control of their organization]]]].

[[AC: ''Series/DoctorWho'']]
* In [[https://www.fanfiction.net/s/10568721/1/Survival-of-a-Monster "Survival of a Monster"]] the 11th Doctor, Norine and a Rutan form an alliance to stop King Wurzin and the Tufgup learning space travel with a Rutan ship.
** From the same author, "Game of Doctors" has a lot of this as the 7th Doctor in the [[https://www.fanfiction.net/s/9868669/8/Game-of-Doctors 8th chapter]] is forced to make an alliance with Callidus Dominus and the Malphan Empire to defeat the Virmok Empire. Later with the help of the 11th Doctor he gets the Daleks to attack [[spoiler:the Master's Cyberman world]] in the [[https://www.fanfiction.net/s/9868669/16/Game-of-Doctors 16th chapter]], which makes the 9th Doctor furious.

[[AC: ''WesternAnimation/FairlyOddparents'']]
* In ''FanFic/NeverHadAFriendLikeMe'', the [[LawfulEvil Pixies]] and the [[ChaoticEvil Anti-Fairies]] have mutually exclusive goals for the world. They have, however, teamed up together temporarily in order to remove an obstacle to both their plans: Timmy Turner.
** [[spoiler: Later, they join Norm, Timmy, and his fairies in trapping [[EldritchAbomination Bob]] in another dimension]].

[[AC: ''Franchise/{{Halo}}'']]
* ''FanFic/EnemyOfMyEnemy'': ExactlyWhatItSaysOnTheTin, and awesome. Take a UNSC colony and add one shipload of Elites being chased by one carrier full of Brutes...

[[AC: ''Literature/HarryPotter'']]
* In ''FanFic/{{Sluagh}}'', apparently a Wizard BigBad is exactly what's needed to get the Real IRA and the Unionist militia to work together.
* Most stories focusing on Slytherin (particularly Slytherin!Harry) will give the House a simple rule that any problems with housemates stays inside the House. Against the other three Houses, they show a united front regardless of their feelings towards one another.
* ''FanFic/ASnakeNamedVoldemort'' has this between Voldemort and Harry, initially at least.

[[AC: ''WesternAnimation/InvaderZim'']]
* ''FanFic/MyHostageNotYours'': Zim originally helping out Gaz (and Dib by extension) is this trope, before [[RelationshipUpgrade evolving]].
** Tak teams up with Dib's [[LaResistance Group]] in the third story just for revenge against Zim. [[spoiler: When they defect from the Swollen Eyeballs, they team up with Zim and Gaz to defeat them.]]

[[AC: ''WesternAnimation/JackieChanAdventures'']]
* ''FanFic/QueenOfAllOni'': When Valmont uses the power of Kaito's mask to steal the Ninja tribe away from Jade, she and Jackie briefly (and reluctantly, in her case) team up to defeat him.
** Subverted in one of the scenes set in [[GhostInTheMachine Jade's mindscape]] -- Hero tries to form an alliance against [[SuperpoweredEvilSide The Queen]] with his apparent rival Father, but is rejected.
** In a similar subversion, the J-Team refuses to ally with [[FutureBadass Karasu]] against Drago, as they don't see any good coming from working with a Shadowkhan.
* ''FanFic/{{Webwork}}'': The Mexican crime boss known as the Old Colonel convinces the J-Team to protect him from the Oni Essence-empowered Chang and help take him down, by pointing out that [[LesserOfTwoEvils it's better than]] letting Chang kill him, take over his assets, and go to ground with it all. [[spoiler: They do help, but set the Colonel to be arrested by the Mexican police.]]

[[AC: ''WesternAnimation/MyLittlePonyFriendshipIsMagic'']]
* ''FanFic/ABriefHistoryOfEquestria'': When Wind Whistler led a coup against [[TheCaligula Commander Sullamander]], she recruited help from Star-Swirl the Bearded and the few unicorns loyal to him. True, Star-Swirl was open-minded and friendly with the other tribes, but that's still members of one nation asking help from members of a rival nation to overthrow their leader.
* ''FanFic/TheImmortalGame'': In a plan [[GodzillaThreshold born of desperation]] to defeat [[BigBad Titan]] during the FinalBattle, the Mane Six end up allying with [[spoiler: Discord]]. As [[spoiler: Celestia]] puts it, they know the latter will probably betray them after they're done with Titan, but they can handle that, and besides, "[[LesserOfTwoEvils better the devil you know]]".
* ''FanFic/ThePowersOfHarmony'': After she [[spoiler: [[DemonicPossession possesses her]]]], [[TheDragon Eclipse]] is able to convince Rarity to help her [[TheStarscream plot against]] [[BigBad Cetus]], and together they plan to bring Twilight into the fold as well. Or at least, [[GuileHero that's what Rarity wants Eclipse to think]].
** Played straight when the Changeling Princess Pupa allies with Applejack's group to stop (her sister) Chrysalis' invasion of Gildesdale, with the promise that afterwards she'll also ally her people with the ponies against Cetus.
* At the climax of ''[[FanFic/PoniesOfOlympus Rolling in Beaches]]'', Spike convinces the hippocampi and Scaly Back River Clan dragons to put aside their differences in order to stop all the dragons [[spoiler: and Mane Six]] turned into monsters by [[TheCorruption the Rainbow of Darkness]].
* In the ''FanFic/PonyPOVSeries'', the backstory for the [[BadFuture Dark World]] has this happening twice between [[EvilOverlord Discord]] and the various LaResistance groups arrayed against him (primarily the [[HeelRaceTurn Changelings]]) -- first during the [[AlienInvasion invasion]] by the [[TabletopGame/{{Warhammer40000}} Imperium of Man]], then centuries later during his [[EvilVersusEvil war with Grogar]] (in both cases, Discord was viewed as the LesserOfTwoEvils).
** Clover's story in the ''7 Dreams/Nightmares'' collection reveals that eons ago, a group of {{Eldritch Abomination}}s escaped the loss of their own reality by entering the POV [[TheMultiverse multiverse]] with the intention of absorbing all beings into their HiveMind in order to torment them for all eternity. This offended ''both'' [[TopGod Fauna Luster and Entropy]] -- the former because She's a strong believer in free will, and the latter because it would potentially prevent the end of all things She [[OmnicidalManiac embodies and desires]] -- leading to Them, Their Mates, and Their respective children working together to defeat these things and [[SealedEvilInACan seal them]] beyond the Gates of Tartarus. It's noted in-universe that this is the ''only'' time the two of Them have ''ever'' agreed on ''anything''.
** During the Wedding Arc, while they're unaware of it, the heroes' efforts are being aided from the sidelines by [[spoiler: Discord and Nightmare Diamond]], who are aware that if Chrysalis succeeds in her plans, she'll be [[AGodAmI powerful enough]] to be a threat even to them.
** During the Finale Arc, [[spoiler: when Discord and his allies begin their [[RewritingReality endgame plan]], it's so horrifying that a group of alternate dimension [[SuperPoweredEvilSide Nightmares]] show up to help stop them]].
* In ''FanFic/TheConversionBureauColdWar'' the United States of America and the Soviet Union put aside all differences to fight a xenocidal race of Ponies.

[[AC: ''Manga/{{Naruto}}'']]
* ''[[http://www.fanfiction.net/s/6585953/1/Boutoku-no-Naruto Boutoku no Naruto]]'' has Kyuubi willing to help Naruto out of hatred for the shinigami. When [[ForWantOfANail Naruto learned Edo Tensai instead of Kage Bunshin]], Kyuubi offered him a deal.
-->'''Kyuubi''': "Because I hate. There are many things I hate. The Sage of the Six Paths. Madara Uchiha. Hashirama Senju. Mito Uzumaki. Minato Namikaze. The toads. Kushina Uzumaki. But more than anything else, I hate the Shinigami. He stole over two thirds of my power, and claimed the Namikize's soul in return, a violation of his own laws and rights. The Shiki Fuin, the contract with the Shinigami, works on a simple basis. A soul for a soul. He did not take my soul, merely my power. When I was sealed, he had nothing to do with it. By the ancient laws, he should have let the Namikaze go, or at least send him to the Pure World, and return my power to me. But he didn't, breaking ancient law. ... You see, he has stolen from me, so I will ensure that he suffers for it! You Naruto, are the key of my vengeance. Through you I will make him suffer. All I ask is that you call back many, many souls, I don't even care for what, and in return, I will give you what all other jinchuuriki can only dream of, my full support."
* In ''[[http://ficwad.com/story/242784 Eroninja]]'', Danzou and Joseki work together to destroy the Suna/Konoha alliance, viewing it as weakening their villages in the long run. Also, if they can instigate a war between the two, they'll have a chance to try and kill each other for their actions in previous wars.

[[AC:''Anime/NeonGenesisEvangelion'']]
* ''Fanfic/AdviceAndTrust'': Shinji's female classmates have a crush on him and team up to keep Asuka away him as each one of them try to ask him out. However Rei does not care for them trying to flirt with Shinji so that Rei teams up with Asuka to keep them away Shinji (and in the process they become [[TrueCompanions good friends]]).
* ''Fanfic/{{HERZ}}'': The US Government and SEELE does not like or trust each other, but they join to destroy secret organization GEIST. On the other hand, GEIST lends its support to NERV's successor HERZ to take down SEELE.

[[AC: RealPersonFic]]
* Villain example: Although [[spoiler: Brox and Co.]] and the Raleka in ''Fanfic/WithStringsAttached'' aren't exactly mortal enemies, they dislike each other considerably. [[spoiler: Brox and Co.]] are contemptuous of Ketafans in general, and the Raleka hate that the skahs want to use the sacred Vasyn for stupid purposes. However, they work together against the four because the Raleka cannot do certain things without [[spoiler: Brox's help]]. We find out later that [[spoiler: Brox and Co.]] were planning to betray the Raleka, but Paul and George inadvertently screwed this up for them.

[[AC: ''Franchise/SpiderMan'']]
* One issue of ''[[FanFic/UltimateSpiderWoman Ultimate Spider-Woman: Change With the Light]]'' has petty criminal Blizzard teaming up with Spider-Woman to help her protect the innocent people in danger during an invasion of New York City by an army of BrainwashedAndCrazy super villains. Taking inspiration from the ''WesternAnimation/DarkwingDuck'' episode where DW teamed up with Megavolt (see below), Blizzard points out that if New York is destroyed, there'll be nothing left for him to rob.

[[AC: ''Franchise/StarTrek'']]
* "Fanfic/FlaihhsamSSpahkh": Spock casts the Romulans giving the Federation a cloaking device for the USS ''Defiant'' as an alliance against a poorly understood enemy (the Dominion). [[DoomedByCanon The alliance had collapsed by the time the Dominion War broke out.]]
* ''Fanfic/PeaceForgedInFire'': Praetor Velal of the Romulan Star Empire becomes disgusted at the underhanded attempts of the Tal'Shiar to disrupt the peace talks between the Empire and the Romulan Republic, and joins with his opposite numbers to take them down. During the talks they also prepare command protocols for joint military operations against enemies like the Undine and Borg.
* ''Fanfic/RealityIsFluid'': Eleya is able to convince an Undine commander that the Federation et al. were ''not'' responsible for the attacks on Undine spawning pools and hatchlings that sparked the current war, and that faction begins targeting the Undine that have been infiltrating the Alpha and Beta Quadrant powers ''and'' agrees to join the fight against the [[BigBad Iconians]] when the time comes. [[spoiler:This pays off in the later story ''Fanfic/BeatTheDrumsOfWar''.]]
* In the fic ''[[https://www.fanfiction.net/s/9694363/1/Safe-and-Sound Safe and Sound]]'', Kirk and Khan pull one of these, similar to the one they pulled in the [[StarTrekIntoDarkness second film]], in order to save the [[spoiler: kidnapped Nyota Uhura, Joanna [=McCoy=] and Lucille Harewood. This time, Khan doesn't betray him]].
* In ''Fanfic/TheWrongReflection'', Eleya allies with the Klingon-Cardassian Alliance to attack a Terran Empire installation, but Eleya worries that the Alliance may turn on her to get its hands on the USS ''Bajor'''s technology.
* In "Fanfic/PastContinuous", as in canon the Federation and the Klingons are technically still at war throughout the 2800 incident (though active hostilities have died down), but they're working together to eject Loriss from Deep Space 9. Eleya remarks to Kagran that after the Jem'Hadar are dealt with "we can go back to hating each other, but until then, I want your word you'll keep [[http://sto.gamepedia.com/K'men K'men's]] people in line."

[[AC: ''Franchise/TolkiensLegendarium'']]
* In ''FanFic/AFarGreenCountry'', Durus and Surad were enemies of Elden and Nellas, but these four quickly become allies when they are chasing a common enemy.

[[AC: ''Transformers'']]
* In the Transformers fanfic ''[[Fanfic/AChildShallLeadThem A Child Shall Lead Them]]'', the Dinobots end up teaming up with Galvatron and Cyclonus to escape the Quintessons. Galvatron ends this alliance fairly quickly when he literally stabs Pterodactus Prime (aka Swoop) in the back.

[[AC: ''TabletopGame/{{Warhammer 40000}}'']]
* ''FanFic/RiseOfTheTau'' has TheRemnant of the Imperium, the [[AlwaysChaoticEvil Forces of Chaos]], [[BloodKnight da Orks]], [[OurElvesAreBetter the Eldar]] and [[spoiler:[[MySpeciesDothProtestTooMuch Farsight's Tau rebels]]]] teaming up against the Tau Empire. [[spoiler:Also, the Chaos Gods, Gork and Mork, Ynnead and [[AscendToAHigherPlaneOfExistence the Emperor]] tearing apart the Deceiver]].

[[AC: ''Literature/{{Worldwar}}'']]
* ''FanFic/WorldwarWarOfEquals'': In light of the pending threat of invasion by the Race, various nations around the world put aside their differences to form mutual defense pacts:
** Egypt and Israel set aside differences and set up a military alliance with Turkey before The Race arrives.
** Colombia and Venezuela, who were waging a war just months before the Race's arrival, agree to a cease fire and start preparing for the incoming invasion.
** Every drug cartel in Ciudad Juarez fights alongside the Mexican military in the city against Race forces.

[[AC: ''Literature/{{Worm}}'']]
* In FanFic/{{Cenotaph}} [[CivilianVillain Purity]] and [[GuileHero Skitter]] team up to fight the ABB. On one hand a flying Blaster, [[TheAtoner ex-Nazi]] single mother. On the other, a ruthlessly intelligent, highly resourcefull teenage highschool student and [[spoiler: newly-minted orphan]] with dreams of being a hero. Together, they fight crime!

[[AC: ''Series/TheXFiles'']]
* The example from WildMassGuessing for ''WMG/TheXFiles'', suggesting that as soon as the aliens arrive on Earth, they'll promptly be beaten back by ''every single MonsterOfTheWeek'', who tend to favor continuing to live on their planet.
[[/folder]]

[[folder:Film]]
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* In the first ''Film/AlienVsPredator'' film, the humans end up helping the preds kill xenomorphs by bringing them their ancient weapons.
* In ''Film/AssaultOnPrecinct131976'' and [[Film/AssaultOnPrecinct132005 its remake]], the remaining personnel of a soon to be shut down police station must put their trust on criminals within it to fight worse criminals laying siege on the place.
* ''Film/BladeII'':
** Blade teams up with the vampires to fight a subspecies of super-vampires that prey on everyone. The vampires end up betraying Blade two-thirds of the way through the movie. Nomak (the lead super-vamp) points out the trope: "Is the enemy of my enemy my friend? Or my enemy?"
--> '''Scud''': So B-man, what do you think?
--> '''Blade''': Sounds like a plan.
--> '''Whistler''': What do you really think?
--> '''Blade''': They're gonna fuck us the first chance they get.
** Also demonstrated during the helicopter flight to the vampire HQ, when Nyssa seems disappointed with Blade over how easily he allows himself to be taken to a place where he may become a prisoner. Scud convinces Blade to show Nyssa his vest made of Semtex, enough to level a city block. Nyssa looks impressed.
* In ''Film/DickTracy'', Tracy considers this trope when deciding whether to accept The Blank's help in defeating Big Boy. Instead, he finally realizes "The enemy of my enemy is my enemy."
* This is what prompts the partnership between Wikus and Christopher in ''Film/{{District 9}}''. [[spoiler:Christopher has spent 20 years collecting enough [[GreenRocks fluid]] to power the aliens' buried shuttle so he can take the mothership and get help, but just as he gets the last of it, his shack is searched by [[MiddleManagementMook Wikus]], who accidentally inhales some of the fluid and starts [[BodyHorror transforming into an alien]]. On the run from his own [[MegaCorp company]], Wikus teams up with Christopher to get the fluid back from MNU, on the condition that Christopher change Wikus back into a human. It doesn't really [[BittersweetEnding work out that way]], but by then Wikus has had enough CharacterDevelopment to be okay with it.]]
* The Sci-Fi movie ''Film/EnemyMine'' (1985) (directed by Wolfgang Petersen), starring Dennis Quaid as a human space marine and Louis Gossett Jr. as an alien soldier. In the midst of an interstellar war between their species, both crash-landed their vessels on a desolate planet and must work together to survive. Years later, after the alien soldier gave birth to a baby alien and died from complications, Dennis Quaid's character raises his adoptive alien son and must protect him and himself from human scavengers who use captured aliens as slaves, until they're both finally found and rescued. It is implied that this event helps to end the war.
* Creator/WillSmith's character in ''Film/EnemyOfTheState'' pulls an on-the-fly BatmanGambit which ties up two troublesome loose ends by getting them to deal with each other. Through some fast talking and well chosen ambiguous language, he [[spoiler: sets up a MexicanStandOff between a rogue NSA team that has taken him hostage and a gang of trigger happy goodfellas who are looking for a fight.]] It does not end well for any of them.
* ''Film/FantasticFourRiseOfTheSilverSurfer'' has the titular team teaming up with Dr. Doom to get the Silver Surfer. Eventually the Fantastic Four team up with the Surfer [[spoiler: after Doom betrays them and takes the Surfer's board for himself. And probably after to prevent Galactus from destroying Earth.]]
* [[spoiler:Storm Shadow]] teams up with the Joes in ''Film/GIJoeRetaliation''.
* ''Franchise/{{Godzilla}}'':
** Mothra convinces her enemies Godzilla and Rodan to stop Ghidorah in ''Film/GhidorahTheThreeHeadedMonster''.
** Battra and Mothra, mortal enemies of one another, joined forces in order to stop Godzilla in ''Film/GodzillaAndMothraTheBattleForEarth''.
** In ''Film/GodzillaVsMechagodzillaII'', Godzilla and Rodan start off fighting for the unhatched egg on Adona Island, Godzilla because it's a Godzillasaurus egg, Rodan because the egg's presence in the nest he had hatched in made the infant his surrogate brother. When the UNGCC eventually decide to use the newly-hatched Godzilla Jr. to lure Godzilla into a fight with Mechagodzilla, the two monsters get mortally wounded, and Rodan sacrifices what little life he has left to revive Godzilla.
** In ''Film/GodzillaVsSpaceGodzilla'', M.O.G.U.E.R.A. is built as yet another anti-Godzilla machine. But when [=SpaceGodzilla=] lands in Fukuoka and starts growing a large mass of crystal across the surface of the city, the M.O.G.U.E.R.A. team ends up having to work with Godzilla to bring down the extraterrestrial invader. This trope is especially applicable for Akira Yuki, the M.O.G.U.E.R.A. captain who had been working to kill Godzilla as revenge for the monster killing his best friend Goro Gondo in ''Film/GodzillaVsBiollante''.
** In ''Film/{{Godzilla 2014}}'', the prologue deals with how MONARCH and the military tried to kill Godzilla in TheFifties with nuclear "tests" in the Pacific. When the M.U.T.O.s awaken decades later and Godzilla starts going after them, Admiral Stenz enacts a plan to kill all three monsters with an even bigger bomb. But the M.U.T.O.s [[spoiler:steal the bomb and use it to feed their nest]]. This foul-up convinces Stenz to accept Dr. Serizawa's suggestion that they ought to leave all the heavy work to Godzilla.\\\
Godzilla refuses to attack the military (who attack him on occasion) because they are opposed to the [=MUTOs=]. It helps, though, that it's quite quickly established that the military is effectively no threat to either of them.
* The first half of ''Film/TheGoodTheBadAndTheUgly'' is a slowly-escalating buildup of hatred between Blondie and Tuco to the point where they're inches from clawing out each others' eyes. Then Tuco learns the location of a graveyard where gold is hidden, Blondie learns the name on the grave where the gold is buried, and they're forced to work together, later uniting against Angel Eyes after he learns Tuco's half of the secret.
* ''Film/HellInThePacific'', about an American and a Japanese soldier trapped on an island together, and which inspired the film in the previous entry, natch.
* This is the whole premise behind ''Film/IndependenceDay''.
* ''Film/JurassicWorld''; [[RaptorAttack Blue]] teams up with [[TyrannosaurusRex Mama Rex]] to battle the ''[[BigBad Indominus Rex]]'' (Given the [[Film/JurassicPark the last time]] these two species met they tried to kill each other, this is a marked improvement)
* French horror film ''LaHorde'' is about a group of cops and criminals joining forces against a horde of zombies. A particularly tense situation because the cops were searching revenge against the gangsters that killed a colleague.
* The film ''Film/{{Krull}}'' begins with this, as two rival kingdoms arrange a political marriage to unify them against the alien invasion. [[spoiler: Sadly, it does them little good as the highly advanced Slayers storm the castle and kill everybody except for the heroic prince and his future bride, who is taken by the invaders.]]
* The main premise of ''Film/TheLeagueOfExtraordinaryGentlemen''.
* ''Franchise/MarvelCinematicUniverse'':
** ''Film/ThorTheDarkWorld''; Thor reluctantly teams up with Loki, as his knowledge of magic and his trip through the other realms in ''Film/{{The Avengers|2012}}'' makes him adept at tracking Malekith and his forces.
** In ''Film/AvengersAgeOfUltron'', Ultron persuades Quicksilver and Scarlet Witch to join him in an alliance, through their mutual hatred of the Avengers. Likewise, they eventually decide to ditch Ultron after seeing just how dangerous he is and team up with the Avengers, even though they aren't on good terms with Tony Stark.
* ''Film/TheMatrixRevolutions''. Neo and the Machines must work together to destroy Smith before he takes over both the Matrix and the Machine World. [[spoiler:After Neo allows Smith to possess him, the Machines use their power through Neo's body to destroy all of the Smith clones.]]
* In the climax of ''Film/MeanGirls'' 2, Jo's former friends decide they hate Mandi more than they hate her and agree to help her.
* Kind of lampshaded in ''[[Film/OceansEleven Ocean's Thirteen]]'', when they decide to include Benedict in their plan:
-->'''Linus:''' We've shaken every tree...\\
'''Rusty:''' I really wanted to avoid it this time...
* In ''Film/OnceUponATexasTrain'', the retired outlaws and the retired Rangers are forced to combine forces to combat a gang of younger, more ruthless outlaws.
* In the ''Film/PiratesOfTheCaribbean'' franchise, every character views the others as either enemies or [[GoodIsDumb incredibly stupid]] pawns, but will readily concede to work together when their priorities mesh. These unholy alliances tend to confuse casual viewers, who are convinced (''très'' incorrectly) that the adversarial role Barbossa plays in the first film completely contradicts the compatriot role he plays in the third.
* Mentioned in ''Film/{{Predators}}'' when Royce tells Isabelle that he intends to free the captured Predator and use that momentary trust to have him find the predator's ship and escape. Isabelle then adds:
--> '''Royce:''' The enemy of my enemy...
--> '''Isabelle:''' That doesn't make it a friend.
* A very short alliance happens in ''Film/RaidersOfTheLostArk'', when Indy and a mook are struggling over control of a gun, when [[TheDragon Toht]] says "Shoot them -- shoot them both", and suddenly Indy and the mook cooperate to shoot the other mook pointing a machine gun at them.
* In the end of ''Film/ResidentEvil Retribution'', Alice has to work with [[spoiler:Albert Wesker]] to ensure the survival of the last of humanity against the [[spoiler:Red Queen]].
* In a PlayedForLaughs moment from ''Film/TheRocketeer'', it's [[NeighbourhoodFriendlyGangsters gangsters]] siding with the police vs. [[ThoseWackyNazis Nazis]]. They may be crooks, but they're ''American'' crooks. And, yes, there's a [[StupidJetpackHitler jetpack]] involved.
* Balthazar and Mathayas resort to this in ''Film/TheScorpionKing'' in order to take down Emperor Memmon.
* ''ShakespeareInLove'': When the Master of the Revels orders the Rose Theater closed indefinitely, thus preventing Shakespeare and company from premiering ''RomeoAndJuliet'', Richard Burbage, owner of rival theater The Curtain, makes a peace offering, saying that they should stand together against their common enemy:
-->"The Master of the Revels despises us all for vagrants and peddlers of bombast. But my father, James Burbage, had the first license to make a company of players from Her Majesty; and he drew from poets the literature of the age. We must show them that we are men of parts. Will Shakespeare has a play. I have a theater. [[CrowningMomentOfHeartwarming The Curtain is yours.]]"
* In ''Film/{{Spectre}}'', Bond and [[spoiler:Mr White]] decide to both go after Oberhauser, and try and protect the former's daughter. Though at the end of the meeting [[spoiler:White]] kills himself. Bond still considers the alliance valid, however, and does pursue the daughter.
* In ''Film/StarTrekIntoDarkness'', Harrison and Kirk temporarily team up [[spoiler:to board and disable the ''Vengeance'']].
-->'''Kirk:''' [[DiscussedTrope The enemy of my enemy is my friend]].
-->'''Spock:''' [[DiscussedTrope An Arabic proverb]] attributed to a prince who was [[AnalogyBackfire betrayed and decapitated by his own subjects]].
-->'''Kirk:''' [[LameComeback Well, it's still a hell of a quote]].
* ''Film/{{Thunderball}}''. During the big underwater fight at the end, when sharks start to show up the SPECTRE frogmen and their opponents stop fighting each other and start attacking the sharks together.
* Subverted by ''Film/TransformersDarkOfTheMoon''. Prime and Megatron teaming up to battle a greater threat is fairly common in ''Transformers'' media, but this time [[spoiler: when Megatron offers a truce, Prime responds by cutting his head off]].
* ''Film/WestSideStory'': Despite their hatred of each other, the two gangs seem pretty united in their hatred of the cops--the Jets laugh when Bernardo mouths off to him, they pretend to be buddies to avoid suspicion, and when Shrank insults Bernardo, it's Riff who hold him back from attacking him.
* In ''Film/TheWrongArmOfTheLaw'', the tactics of an IPO mob from Australia ends up making strange bedfellows of not only underworld rivals, but also the underworld itself and the police.
* ''Film/XMen'':
** The entire point of ''Film/X2XMenUnited'': the X-Men team up with Magneto and Mystique to stop a human villain from killing all mutants. [[spoiler: Right up until Magneto and Mystique decide to invert the attack and have all the non-Mutants killed instead.]]
** Wolverine and Sabretooth in ''Film/XMenOriginsWolverine'' against InNameOnly {{Deadpool}}.
** The ending of ''Film/XMenFirstClass'' implies that the Americans and Soviets had found a common enemy in the mutants.
** In ''Film/TheWolverine'', Harada cites Viper as a [[spoiler: "means to an end," and voices his displeasure towards her consistently. Viper seems indifferent to Harada attitude-wise, but she just sees him as another inferior underling.]]
** ''Film/XMenDaysOfFuturePast'':\\\
Xavier and Magneto unite against the Sentinels that threaten all of mutantkind with extinction. [[spoiler:Although Magneto ends up attempting his own plans for mutant superiority and, ironically enough, winds up jeopardizing the plan to save mutantkind.]]\\\
Trask and Stryker are shown handing over their plans for the Sentinels to the DirtyCommunists at the Paris Peace Conference. Trask is even grateful for the mutants for providing a common enemy which will unite humanity in a struggle for survival.
[[/folder]]

[[folder:Literature]]
* In ''Literature/TheBookOfMormon'' the Nephites and the Lamanites, usually mortal enemies of one another, join forces against the even more murderous Gadianton robbers in 3rd Nephi.
* ''[[Literature/TheEnemyPapers Enemy Mine]]'' by Barry B. Longyear, the basis for the movie mentioned above.
* ''TabletopGame/{{Warhammer 40000}}'':
** In William King's novel ''Literature/SpaceWolf'', the Marines chose Ragnar and Strybjorn for Marines when they were fighting each other to the death, and both were mortally wounded. Ragnar's desire for {{Revenge}} is kept at bay by the knowledge that the Marines will not let him. [[spoiler:Finally, when they are fighting Chaos Space Marines, Strybjorn saves Ragnar's life, and shortly thereafter goes down. Ragnar realizes that he neither should nor does want Strybjorn to die; he sends the others on and [[NoOneGetsLeftBehind stays to treat and bring Strybjorn with them]].]]
** The first ''Literature/CiaphasCain'' novel, ''For the Emperor'', forces the Imperial Guard into an uneasy truce with a Tau diplomatic security contingent because neither side considers the crappy backwater planet Gravalax worth getting into an all-out war over. [[spoiler:It turns into EnemyMine after the two sides discover there's a genestealer cult trying to ''provoke'' that war, and the Tau aid the Guard in restoring order. The suicide squad Cain puts together from condemned Guardsmen joins up with a Tau pathfinder unit down below, while on the surface, a Tau Hammerhead hover-tank helps the 597th break through a traitor PDF position.]]
** HistoryRepeats in the ninth novel, ''The Greater Good'', where the Tau and Guard start out fighting, [[spoiler:then are forced to join forces when their war is rudely interrupted by a tyranid hive fleet]].
** Subverted in ''[[Literature/SpaceMarineBattles World Engine]]'' - after realizing that both the Astral Knights and Turakhin are there for Hequroth's blood (engine coolant?), the two simply decide to ignore each other until the Overlord's dead.
** In another ''Literature/SpaceMarineBattles'' novel, ''Malodrax'', Lysander is disgusted to find an ally in a daemon prince, but goes with it, as he wants revenge on Thul and Shalhadar wants to teach the Iron Warrior his place.
* And in the ''Literature/WarchildSeries'', Captain Azarcon, a SpaceMarine, and Niko, human sympathizer of the alien [[LaResistance resistance]] work together to [[spoiler:rescue hostages and capture gunrunners. This collaboration leads to the end of the war... for a time, anyway.]]
* In Creator/EEDocSmith's ''[[Literature/SkylarkSeries The Skylark of Space]]'', the villain [=DuQuesne=] agrees to act as one of the party until they return safely to Earth, even though he wants the hero Richard Seaton dead. Ultimately Seaton [[spoiler:makes his best friend hand BOTH his guns over to [=DuQuesne=] because [=DuQuesne=] is the better shot, and then Seaton and [=DuQuesne=] stand side by side and mow down their common enemies until all four guns are empty.]] In ''Skylark [=DuQuesne=]'', [=DuQuesne=] enlists Seaton's help in fighting an otherwise unstoppable alien menace and ends up [[spoiler:winning the war and saving Seaton's life in the process]], though by this time [[spoiler:his reasons for wanting Seaton dead no longer apply]]. The fact that each man at least respects the other's abilities helps.
* ''{{Worldwar}}'', by Creator/HarryTurtledove. Aliens invade in 1942. The Axis are working with the Allies. Another one occurs between the Jews in Europe and the Race. Aliens who never figured out discrimination or Nazi Germany. Played with in the sense that they aren't quite sure who'd be worse for mankind. (The Jews play it both ways,[[HeelFaceRevolvingDoor working with the Race or the Germans depending on who's a bigger threat at the time.]])
* In ''Literature/WorldWarZ'', after the zombie outbreak Israel pulls back from the Palestinian territories and offers asylum to any uninfected Palestinian refugees, both sides agreeing to cooperate in the face of an apocalyptic disaster. When the outbreak is contained they form a permanent truce and Israel agrees to a two-state solution.
* In ''Literature/HarryPotterAndTheDeathlyHallows'', Narcissa Malfoy [[spoiler:helps Harry continue faking his death to Lord Voldemort in order to save her family.]]
* Literature/TheRiftwarCycle has a few:
** In ''A Darkness at Sethanon'', the Heroic Prince teams up with the former EvilChancellor to defend a city against the TheHorde.
** In ''Honored Enemy'', a band of Kingdom raiders allies with a Tsurani patrol in order to survive pursuit from a [[AlwaysChaoticEvil Moredhel]] company. The story plays during the war between the Kingdom and the Tsurani and revolves around the tension this causes.
** In ''VideoGame/BetrayalAtKrondor'', the moredhel chieftain Gorath seeks out Prince Arutha to curb another upcoming invasion that he feels would be too costly for his people.
** In the Chaoswar Saga, the final trilogy, an enemy shows up who is so dangerous that the God of Evil comes in on the side of Good.
* The ''Literature/{{Animorphs}}'' only teamed up with their main enemy, Visser Three, twice: to defeat a race of annoying, psycho, tiny-tiny-tiny aliens with a shrink ray and a mass Napoleon Complex, and to escape from a bunch of mutated blue fish-people that want to kill and stuff them for their DerelictGraveyard. On the other hand, Visser One freed them from Visser Three's prison in her very first appearance. Since the Animorphs are guerrilla fighters and Visser One is the main advocate for a stealth invasion (and her host is [[spoiler:Marco's mom]]), they're not unwilling to accommodate her if it hurts Visser Three's credibility -- but they're not unwilling to use it as an excuse to double-cross her, either...
** In ''Elfangor's Secret'', the Ellimist and Crayak both agree that the Time Matrix should not be in the hands of a mere mortal and help the Animorphs stop Visser Four.
** In the last few books, they team up with Tom and his followers in order to hijack the Pool Ship. Both sides then double-cross each other, but the Animorphs end up winning in the end.
** In ''The Andalite Chronicles'' there's a brief few minutes where Elfangor and the future Visser Three (then only Visser Thirty-Two) team up to escape certain death.
* In ''The Other Wind'', the last (so far) in Creator/UrsulaKLeGuin's ''Literature/{{Earthsea|Trilogy}}'' series, representatives of four cultures normally at loggerheads - if not outright enmity - have to pool their respective mythological knowledge in order to figure out the truth about an ancient evil.
* In the ''[[Literature/HonorHarrington Crown of Slaves]]'' sub-series of the ''Honorverse'', Victor Cachat and Anton Zilwicki are two intelligence operatives from the warring Star Empire of Manticore and the Republic of Haven (Formerly People's Republic of Haven). They team up to investigate Mesan intrigue and how it impacts the war. It's implied this sub series may lead to a Grand Alliance...
** Really, by now it's evident that The Climactic Conflict will be between the Andermani/Havenites/Manticore/Maya/Beowulf/Torch/others versus the frikkin' huge Solarian League (minus bits like Maya)/Mesa/whatever else we haven't seen yet. It promises to be ''awesome''.[[note]]Though in context, Manticore and (post-Theisman Coup) Haven are natural ''allies'', particularly considering how vehemently both of them enforce the Cherwell Convention. Now that the reason for the war -- the PRH's expansionist policies -- is gone, the true Republic has been restored, and all the diplomatic snafus are cleared away, it would have been more surprising if they ''hadn't'' allied together.[[/note]]
** As of ''Mission Of Honor'', [[spoiler:Manticore and Haven have signed both a peace treaty and a military alliance]].
* In the ''TheEternalChampion'' story by Creator/MichaelMoorcock, humanity has unified solely because of the presence of the alien Eldren. Ekrose, the protagonist states that, absent the Eldren presence, humanity would be at war with itself. This is a key reason for his decision to [[spoiler:kill the entire human race]]
* Creator/TadWilliams' ''Literature/{{Otherland}}'' CyberPunk novel series has a prominent example of this in the fourth book. After PsychoForHire John Dread usurps control of the Otherland network, CorruptCorporateExecutive Felix Jongleur, who up until now has regarded the heroes as an annoyance (if he was aware of them at all), finds himself on equal footing with them: trapped in the network and [[BroughtDownToNormal unable to use his godlike powers]].
* This is a major part of the plot of all 3 novels in CS Friedman's ''{{Coldfire|Trilogy}}'' trilogy: an immortal vampire and a priest team up to fight mutual enemies. [[spoiler: By the end of the novels, the priest has been thrown out of his church and the vampire's patron Dark God has rescinded his immortality and cast him into Hell for being insufficiently evil. Turns out saving the world isn't compatible with maintaining that black-as-a-moonless-night karma, who knew?]]
* ''Literature/TheHobbit''. The dwarves are about to fight a battle with the Lake-men and Wood-elves to determine who will gain Smaug's treasure. Gandalf appears and warns them that an army of goblins and wargs is approaching, and they must join together to fight the evil attackers.
* In ''Literature/{{Dragonlance}}'', black robed mages ally themselves with the good guys every now and then, for example to drive off the Dark Queen in ''Literature/TheLegendOfHuma'' and during the War of the Lance. ''Dragons of Summer Flame'' was based around this trope. Also Fistandantilus and the Kingpriest used each other for their own goals.
* In ''Literature/TheLegendOfDrizzt'' Drizzt Do'Urden and Artemis Entreri must team up and fight back to back in an effort to get out of the Underdark at one point.
* It is briefly mentioned in the ''TabletopGame/{{Warhammer 40000}}'' novel ''Literature/GreyKnights'' that the underhive gangs of Volcanis Ultor "buried their enmities for one long night" to do battle with a powerful gang of Chaos followers.
* ''Literature/{{Twilight}}'': The Cullens ([[FriendlyNeighborhoodVampires Vegetarian Vampires]]) and the Quilettes ([[FurAgainstFang Werewolves born to kill vampires]]), had to work together to destroy an army of newborn vampires that were killing people in general and wanted to kill Bella Swan in particular.
* ''Franchise/StarWars'':
** While most of the clone troopers went on to serve the empire, the True Mandalorians (a.k.a. the group that nearly destroyed the Galactic Republic 4,000 years ago) fought alongside the rebels to retain their heritage as well as kill those who had betrayed their own kin.
** ''Literature/FateOfTheJedi'': Jedi and the LostTribe of the Sith form an alliance (in the titular ''Allies''), to investigate and subdue a feminine EldritchAbomination named Abeloth. The arrangement doesn't last long, but it does allow Luke's son Ben to pick up a [[DarkActionGirl Sith Apprentice Girlfriend]]...
** Speaking of ''Literature/FateOfTheJedi'', Apocalypse reveals that the Father, the Son, and the Daughter had fought against Abeloth multiple times after she got corrupted. The mere fact that the Son, who is the embodiment of the Dark Side, would ally himself with the Daughter, who is the embodiment of the Light Side, even when they would more often than not fight each other to the death had it not been for the Father's influence would imply that this trope came into play.
** ''TheThrawnTrilogy'': Mara Jade sees her having to constantly work with Luke as this trope, especially with that [[KillMeNowOrForeverStayYourHand not-so-covert wish to kill him]]. He doesn't see it the same way, though. At the end of the trilogy, they've become FireForgedFriends, and by the ''Literature/NewJediOrder'' series, they're a married BattleCouple.
** ''Literature/TheTruceAtBakura'' is this trope personified, with the Imperials forced to work with the Rebels to defeat the evil Ssi-Ruuk. [[spoiler:Once it becomes clear that the aliens are in retreat, the Empire reverts back to their evil selves and re-declares war on the Alliance.]]
** A couple of times in the ''Literature/NewJediOrder''. In ''Conquest'', Anakin Solo teams up with [[ScaryDogmaticAliens Yuuzhan Vong]] warrior Vua Rapuung to rescue his friend Tahiri from a MadScientist who is also Rapuung's enemy (and ex-lover). In the last book, ''The Unifying Force'', Han Solo and Boba Fett find themselves briefly fighting side-by-side against Vong warriors. Finally, at the very end of the series, a subversion comes into play- Nom Anor, RecurringBoss for most of the series, allies with the heroes only out of a selfish sense of self-preservation, and immediately tries to flush them out an airlock when he feels they've outlived their usefulness. For his part, he 'does'' eventually [[BecomingTheMask Become the Mask]] of the Prophet, and genuinely leads an uprising of the Shamed Ones (who have come to view the Jedi as saviors) against the rest of the Vong.
** In ''Iron Fist'', one of the ''Literature/XWingSeries'' novels, Admiral Rogriss of the Empire offers a temporary unofficial alliance with Solo and his fleet to hunt down Warlord Zsinj, and then, in his words, they can go back to their personal ideological differences without inviting anyone else to play.
** During the ''Literature/HandOfThrawn'', Grand Admiral Pellaeon is of sufficient power that when he states it's time for the Empire to sue for peace with the Republic, ''they sue for peace''. However when a conspiracy led by Moff Disra of Bastion, his Dragon ([[spoiler: a stormtrooper modified with [[MagnificentBastard Thrawn's strategic skill]]]]), and a con artist posing as a resurrected Thrawn threatens the entire process, Pellaeon works ''with'' agents of the New Republic to help foil the diplomatic crisis engineered by Disra.
*** Additionally, Baron Fell attempts to recruit Luke and Mara as representatives of both powers into forging the exact same sort of alliance with the Chiss against a major undisclosed threat Thrawn had spent his time in "exile" along the Outer Rim preparing to fight, [[spoiler: which turns out to be the Yuuzhan Vong]].
* ''Literature/ASongOfIceAndFire'' has some interesting ones. Jaime Lannister and Brienne of Tarth are forced to coexist when Catelyn Stark sends Brienne to trade Jaime for Sansa, but though they start out quite hostile, they've reached a point of sort-of friendship and mutual respect (and [[ShipTease maybe more]]). A more hostile camaraderie briefly exists between Sandor Clegane and Arya Stark; she still hates him, sure, but when it comes down to it they work well together, and she's probably more like him than she'd like to acknowledge. On a larger scale in ''A Dance with Dragons'' [[spoiler: the wildlings and the Night's Watch agree to work together against the Others. Many of them aren't happy about this, rendering the alliance extremely tenuous.]]
** While they never actually get round to fighting, Stannis Baratheon makes it clear he views Robb Stark as just as much of an enemy as BigBad Joffrey Baratheon. By Book 5, Robb has been betrayed and killed by some of his own soldiers, while Stannis' forces have been decimated. Subsequently, the Northern soldiers who remain loyal to the Starks join up with Stannis.
** On the outbreak of war, the Tyrells initially throw their support behind Renly Baratheon. When Stannis assassinates Renly, they jump ship to Joffrey and the Lannisters in order to take revenge on Stannis.
* Reversed in the ''Franchise/StarTrekExpandedUniverse''. In the wake of the Borg invasion, several previously non-aligned minor enemies such as the Tholians join the Typhon Pact in order to leave the Federation and Klingon Empire surrounded by a hostile power. The Tholians, well-known for xenophobia, join for this reason ''alone''.
* The DaleBrown novel ''Air Battle Force'' culminates in [[spoiler: the Taliban detachment that served as primary enemy of that book]] working with Turkmen and American forces against the Russians, which continues into ''Plan of Attack''.
** ''Edge of Battle'' has [[spoiler: Zakharov and Task Force TALON]] reluctantly cooperating after Comandante Veracruz's double-cross, though it doesn't last.
** ''Strike Force'' is centred on an Iranian coup leader and former enemy of Dreamland who now needs their help. The blurb tells you as much!
* ''A Pict Song'' by Creator/RudyardKipling. "No indeed! We are not strong, But we know Peoples that are..."
* ''The White Rose'' by Glen Cook. In the final battle the Lady -- sorceress leader of the northern empire -- needs the help of the white rose to take down the dominator, her husband and a much better sorcerer. The white rose creates a area where magic cannot be used and therefore is vital to taking down the greatest sorcerer in known history.
* In ''[[Literature/TheIcewindDaleTrilogy Streams of Silver]]'', Drizzt Do'Urden and Artemis Entreri declared a temporary truce in order to join forces against a common enemy (the [[AlwaysChaoticEvil gray dwarves]] inhabiting Mithral Hall). Some time later, in ''[[Literature/LegacyOfTheDrowSeries Starless Night]]'', Catti-Brie and Entreri teamed up to rescue Drizzt from the drow, who were holding all three of them captive and who would have eventually executed both Drizzt and Entreri. (Or condemned them to a FateWorseThanDeath.)
* ''Literature/ArtemisFowl'' and Holly do this in ''The Arctic Incident'' and ''The Eternity Code'' -- they are opponents, or at the very least rivals with a sore history, even though they have both saved each others' lives. In ''The Arctic Incident'', they cooperate as part of a deal: Artemis uses his above-world influence to investigate a smuggler, while the LEP use their advanced technology to help rescue Fowl Senior. In ''The Eternity Code'', their relationship is more tense as they cooperate to resolve a situation Artemis is partly to blame for. By ''The Opal Deception'', they are friends, and later [[ShipTease possibly more than that]], though that does not go anywhere.
* A complicated example occurs in the "Richard Bachman" (actually Stephen King) novel ''Literature/TheRegulators''. The demon Tak is possessing a young autistic boy, and is somehow using the boy's unique mind to augment and give shape to its supernatural power. Both the boy and the demon are fans of cheap westerns and a Power-Rangers style TV show, both of which the demon uses as inspiration for his means of destroying the town. In the show-within-a-show, the heroes team up with their enemy to stop a something from destroying Earth. Tak channels this as the final assault on the protagonists.
* [[TheHero Sam]] and [[BigBad Caine]] of the ''Literature/{{Gone}}'' series (who are ironically brothers) have teamed up ''twice'' during intervals of trying to kill each other;
** They teamed up in ''Hunger'', against [[TheDragon Drake Merwin]]. Sam wanted him dead because he tortured him senselessly and this was enough to piss even ''him'' off, and Caine's motive was spontaneous rage for him trying to his [[UnholyMatrimony girlfriend]] [[TheDarkChick Diana]].
** In ''Lies'' they have reluctantly paired up again to murder [[spoiler: Caine's daughter.]]. They fail miserably, but it's a awesome fight scene.
* This is how [[Literature/VorkosiganSaga Miles Vorkosigan's]] parents got together, in ''Shards of Honor''.
* In Creator/RobertEHoward's ConanTheBarbarian story "Literature/RoguesInTheHouse" after Murilo and Conan have broken into Nabonidus's house to kill him, and find that he is not, after all, the BeastMan, they ally with him to deal with it.
* In ''Shattered Sky'', the third book in the ''Literature/StarShardsChronicles'' trilogy, the good guys team up with [[spoiler:Okoya, the villain of the second book]] to defeat a greater enemy that threatens to destroy the universe.
* In ''Literature/TheTrailOfCthulhu'', it's revealed that Professor Shrewsbury and Hastur (presented here as Cthulhu's [[CainAndAbel rival brother]]) have struck an alliance to keep Cthulhu from waking up.
* In Literature/TheDresdenFiles series, Harry teams up with Lara Raith multiple times over the course of the series to help them reach mutual goals.
** They do this quite often in fact, to the point at one instance Lara indicates quite clearly she would rather [[IsThatWhatTheyreCallingItNow rule]] with Dresden together than for them to keep fighting each other.
*** Harry has shown that he finds it particularly (or at least very) difficult to resist her, and has even used this fact to taunt a mutual enemy, one of her cousins with whom she shares a bitter rivalry. It was later revealed in Cold Days that [[spoiler: if Kincaid had refused to kill him in Changes, his second choice would have been to go OutWithABang at her...um, ministrations.]]
** He does this even more with crime lord John Marcone; it eventually gets to the point where they've had common goals so often, they're more enemies in principle than practice.
** The novel ''Turn Coat'' is one long, extended Enemy Mine sequence between Harry and his former nemesis Donald Morgan, who finds himself needing Harry's help to survive.
* In the ''Literature/CodexAlera'' series, the Canim have Gadara, meaning "trusted enemy". Gadara can often work together, as [[spoiler: Tavi and Varg]] eventually do.
** The trope is carried much further with the appearance of [[spoiler:the Vord]], which allows the First Lord to forge tentative alliances with all of Alera's long-standing enemies to fight together against the new opponent. In fact, the First Lord ends up saying [[spoiler:the Vord]] was the best thing to happen to Alera.
* In ''Series/TheManFromUNCLE'' novel ''[[http://www.amazon.com/dagger-affair-Man-U-N-C-L-E/dp/B0007KDMFI The Dagger Affair]]'' by David [=McDaniel=], UNCLE and THRUSH operatives work together to stop DAGGER, a new organization armed with advanced science. In the end a THRUSH-controlled fighter jet kamikazes the DAGGER base, using sheer momentum to overwhelm its force field. There's a poignant moment where the leader of THRUSH reminds the leader of UNCLE of their former friendship and gives him a copy of ''Literature/NineteenEightyFour''. Then he ends the truce ahead of the agreed time, not that anyone expected anything else. We also discover that the full name of THRUSH is the somewhat unwieldy "Technological Hierarchy for the Removal of Undesirables and the Subjugation of Humanity".
* In the second book of the ''Literature/{{Mistborn}}'' trilogy, Vin finds herself working with an enemy - [[spoiler:Ten-Soon, who had assumed the identity of Ore-Seur, and had been working on behalf of Straff Venture.]]
** Then there's [[StalkerWithACrush the Watcher]], who is first introduced when she notes that she missed fighting with that one guy who is probably an assassin but hasn't seriously tried to kill anyone yet. His first proper appearance is him saving her life from the sidelines as she hadn't realised one of her opponents had Atium.
* This happens in ''Literature/ThePathToWar'' where Tahniya is soul bound to Zan as punishment; they can't stand each other.
* Bertie Wooster and [[spoiler:Sir Roderick Glossop]] team up in ''[[Literature/JeevesAndWooster Thank You, Jeeves]]'' and end up getting along very well, even exchanging invitations to lunch. Bertie notes that he can't be all bad, since he [[spoiler:beat up Chuffy's BrattyHalfPint cousin Seabury]].
* This is the plot of Creator/HarryHarrison's ''Stars and Stripes'' AlterhateHistory trilogy. After the British declare war on the Union, they accidentally sack a Confederate town instead of a Union fort (the stars-and-bars flag confuses them). In response, the Union and the Confederacy agree to a cease-fire and, eventually, the Confederacy re-integrates into the USA and abolishes slavery in the face of the British Empire. One of the main criticisms of the trilogy is how easily this happens without too many problems.
* The alliance of the outlawed Malazan commander Dujek Onearm with his enemy Caladan Brood against the [[OmnicidalManiac omnicidal]] Pannion Seer in the third volume of ''TheMalazanBookOfTheFallen''. [[spoiler:It later turns out that Dujek's outlawry was a XanatosGambit by Malazan Empress Laseen to win Caladan's support for the war.]]
* In Creator/TomKratman's ''Literature/{{Caliphate}}'', in spite of a continuing state of low-level conflict between them, the [[ExpandedStatesOfAmerica Imperial States of America]] and the Celestial Kingdom of the Han (China) work together to eliminate a significant [[spoiler:bioweapon]] threat posed by the eponymous Caliphate.
* ''Literature/LegacyOfTheDragokin'' has three examples:
** The premise is Baalaria and Drewghaven teaming up to quell raiders produced by civil unrest.
** Zarracka and [[spoiler: Mordak]] team up because they both hate Daniar.
** [[spoiler: Everyone still alive joins forces against Kthonia.]]
* In AndreNorton's ''Literature/{{Catseye}}'', faced with Troy's suspicion, Rerne proposes that they join forces against a common foe.
* A typical strategy in ''TheHungerGames'', especially used by the Careers. Involves forming alliances with one or more other tributes to help each other, stay alive longer, and maybe take out other tributes. But of course, these can only be temporary, since the pool of remaining tributes gets smaller and smaller... There's only ''one'' victor, after all.
* In Creator/JulieKagawa's ''Literature/TheIronDaughter'', Ironhorse allies with Meghan because he considers the Iron King to be false.
* In ''Literature/APassageToIndia'', which is set in the [[UsefulNotes/TheRaj British Raj]], the religious divisions among native Indians - particularly those between Hindus and Muslims - are only set aside when they find themselves both in conflict with the ruling British authorities. As Dr Aziz says to [[AuthorAvatar Cyril Fielding]], "We may hate each other, but we hate you more."
* In ''Literature/TheHouseOfNight'', Aphrodite and Zoey start out with an ArchEnemy relationship, which ends up morphing when the two of them need each other and have a common enemy. Zoey and Aphrodite frequently have JerkassHasAPoint moments.
* ''Unintended Consequences'' by Stuart Woods has BigBad Ivan Majerov attempt to take over the assets of Stone Barrington through many means, including Stone's murder. He doesn't succeed. The following book, ''Doing Hard Time,'' shows his men with roots in TheMafiya plotting to hurt Stone's son, Peter, as revenge. They make the fatal mistake of thinking fugitive-in-hiding Teddy Fay (a serial killer with various skills, including flying planes and speaking Russian) overheard them and try to take him out as well. Teddy kills them, points out their intents to Peter, and takes it on himself to protect the younger man. He leaves behind two other bodies as well before meeting Stone (and finding out Majerov's [[TheDragon second,]] Vlad, aka [[NamesToRunAwayFromReallyFast "The Viper"]] has also arrived, and the two men put together a plan to take both Russians out of the picture permanently. [[spoiler: Teddy is able to kill The Viper in his room with a bullet, and poses as a pilot to kill Majerov himself with a syringe of potassium. As this saves Peter's life, these acts later lead to Stone using his pull with President Will Lee to arrange for a presidential pardon for Teddy.]]
* The point of the ''Literature/LeagueOfMagi'' story "Wait," and ultimately subverted when [[spoiler: one of them kills the other.]]
* In ''Literature/LastSacrifice'', Rose teams up with [[spoiler:Victor Dashkov]] against the mysterious assassin of [[spoiler:Tatiana Ivashkov]].
* The end of the first book of the ''Literature/AhrimanTrilogy'' features the hero teaming up with a man whose entire job is hunting down and killing mages like him.
* Happens in the backstory of ''Literature/RememberToAlwaysBeBrave'', and shown in with the prequel ''{{Literature/Cilva}}'', the Roman Republic is called in by the Alliance to aid an uprising in Zesan/Azania's capital city of Cilva. It's not a trap, but its not really an uprising either. It is mused on as a total wreck of a battle. Later on in Remember To Always Be Brave, the Roman Republic and the Alliance of Nations unites [[spoiler: to fight the Tenebrae invaders, and Corna turns on the Tenebrae after they use a cult base as a experiment ground for their biological terror weapon.]]
* Of a sort in ''Literature/{{Insurgent}}'', Cara extremely dislikes Tris [[spoiler:(due to Tris [[ShootTheDog shooting a brainwashed Will]]]]) but is fully willing to assist in Tris's plans. She even admits to Christina that logically, Tris did what had to be done.
* In ''Literature/TheEmpressGame'', it gets complicated. Blame for the conquest of Ordoch can be attributed both to the IDC (which planned it) and to Dolan (who led the Empire there in the first place). Kayla, an Ordochian, is willing to work with an IDC team while opposing Dolan, since she thinks there's a possibility of freeing Ordoch that way. [[spoiler:Meanwhile, Tia'tan is pursuing the same objective by working with Dolan against the IDC team. She and Kayla each accuse the other of being a traitor on account of the alliances they made. When they work past that, they team up themselves.]]
* In ''Literature/ThePillarsOfReality'', Mari and Alain start out thinking of each other as enemies who have to work together to survive. As they get to know each other, however, they begin to realise that they're only enemies in the first place because each of their respective Guilds are either wrong or lying about the other.
[[/folder]]

[[folder:Live Action TV]]
* Happens regularly in soap operas. For example, on ''AllMyChildren'', lifetime enemies Adam and Palmer teamed up to kill a rapist.
* ''Series/{{The 100}}'' Season 1 had a war occur between the Grounders and people from the Ark. In Season 2, the two factions ally against Mount Weather, which is kidnapping people from both sides to use as HumanResources, and has by far the most advanced military on the Ground.
* ''Series/TwentyFour'': Season 2, Jack is forced to work with Nina Myers, the woman who killed his wife, in order to find information on the season's terrorist threat. Likewise, in season 6, Jack teams up with the previous season's BigBad [[spoiler:Charles Logan]] to investigate a corrupt Russian diplomat.
** Season 5 has him team up with Christopher Henderson to stop bigger threat Vladimir Bierko.
* ''Series/TheFortyFourHundred'': An unusual example occurs where Jordan Collier and Tom Baldwin must work together to escape a dream sequence (whose actual purpose is to get people to work together). It's an odd example in that neither character is a villain: as Tom is a government official doing its best to deal with bizarre circumstances (and sometimes engaging in some morally-questionable methods of dealing with problems) and [[FauxSymbolism Jordan Collier]] is trying to avert the end of civilization, but supports anarchy and believes everyone should take Promicin (a drug that has a 50% chance of death or super-powers).
* ''Series/{{Airwolf}}'': In the episode "Condemned", String and Caitlin have to work together with some UsefulNotes/RedsWithRockets to acquire the antidote for a lethal virus. Then stop [[UsefulNotes/FromRussiaWithNukes three nuclear warhead-equipped cruise missiles from hitting the island]]. Soviets attempt to acquire Airwolf, but don't get very far and stop this before things get hairy between them. The parties depart friends.
* ''AmericanGothic'': Buck, Dr. Crower, Gail, and Ben are all forced to work together in the episode "The Beast Within", when Ben's deranged brother takes them all hostage: Dr. Matt's hand is hurt so he has to coach Ben in performing an emergency surgery, while Buck and Gail have to work together to find the lost key to the handcuffs holding them and Caleb prisoner. (The fact this all turns out to be [[spoiler:ThePlan orchestrated by Buck]] rather subverts the trope.)
** And at the very end of the series, Merlyn is forced to go to Dr. Peele, Selena, and Ben for aid in [[spoiler:digging up Buck's 'corpse']] so that the two of them can then work together to save Gail and stop Caleb's rampage.
* ''Series/AmericanHorrorStoryMurderHouse'': Constance forms an alliance with Moira, the ghost of the woman she murdered, to dispose of a sleazy developer who plans to tear down the house.
* ''Series/{{Angel}}'': SubvertedTrope during the fourth season, when Angel comes to Lilah for information on the Beast and suggests they work together:
-->'''Angel:''' You're afraid of what's coming. Maybe we can help each other. The enemy of my enemy--\\
'''Lilah:''' Can kiss my ass too.
** However, Angel eventually convinces Lilah to give him the information he was seeking, with the argument that Angel will either use it to stop The Beast (in which case Lilah wins) or Angel will die trying (in which case Lilah also wins). As it turns out he decided to [[spoiler: TakeAThirdOption]], so in the end it's more played straight.
** And in the end, she does ally with the team anyways.
* ''Series/{{Arrow}}'':
** Despite his mistrust and dislike of him, Detective Lance asks for the Arrow's help on multiple occasions. By Season 2, this has evolved into them having formed an understanding, and Lance being a FriendOnTheForce.
** The Season 2 finale "Unthinkable" has two examples. The Arrow allies with the League of Assassins to take on [[BigBad Deathstroke]] and his {{Super Soldier}}s, while Diggle and Lyla team up with the SuicideSquad to stop ARGUS from [[GodzillaThreshold bombing the city in an attempt to stop the soldiers]].
** Season 3 has Oliver teaming up with his old enemy Malcolm Merlyn in an effort to learn about the League's methods and fighting style in order to mutually protect each other and Thea from the League's sights. The two still can barely stand each other, though.
* ''Series/BabylonFive'': "Dust to Dust". Bester teams up with Garibaldi to catch drug smugglers. [[Creator/JMichaelStraczynski JMS]] [[WordOfGod explicitly stated]] this was to prevent DiminishingVillainThreat.
** Another episode has a scene deliberately written in defiance of the trope, which Straczynski hates. Mortal enemies Londo and G'Kar are [[LockedInAFreezer trapped in an elevator]] with a fire outside draining their oxygen. Londo declares that they'll have to work together to escape but G'Kar refuses: he's perfectly fine with dying as long as he gets to see Londo die, too.
--->'''G'kar:''' (...)But I don't have to kill you. I don't have to do anything! And I still get to watch you die! I find this most appealing!\\
'''Londo:''' This is ''insane''! We ''must'' work together!\\
'''G'Kar:''' ... No. As the humans say: "Up yours, die." ''*Continues giggling*''
*** The irony of this is that, if the Narn surrender treaty didn't include such harsh penalties for G'Kar just killing Londo, he might happily have helped. However, thanks to the excessive measures taken to prevent Narns attacking Centauri, this was the only way G'Kar would ever get to see Londo die.
*** Further irony is piled on by finally [[PlayingWithATrope playing the trope straight]] when Londo's ProphecyTwist kicks in. At that point G'Kar is one of the last two friends Londo has.
** Londo and G'Kar team up again in the "And The Rock Cried Out, 'No Hiding Place'" when Londo constructs a BatmanGambit [[spoiler: to enlist G'Kar's aid in destroying Lord Refa, whom Londo believes killed his lover Adira and was responsible for using mass projectors on the Narn homeworld. Londo supposedly tricks G'Kar into leaving the sanctuary of station under the pretext of having the Centauri forces arrest him on Narn in Refa's presence; in fact, it was so G'Kar could make contact with the Narn resistance and set up the NoHoldsBarredBeatdown Lord Refa receives [[CrowningMusicOfAwesome to the tune of the episode's eponymous Gospel tune]].]]
** Bester invokes the saying "the enemy of my enemy is my friend" in persuading [[spoiler: Sheridan to work with him against the Shadows, whom Bester has also come to mistrust, in "Ship of Tears".]] He brings it up again when he finds out that [[EvenEvilHasLovedOnes his lover]] was abducted to become part of their WetwareCPU.
-->'''Bester:''' [[ItsPersonal Your war is now my war.]]
* ''Series/{{Galactica 1980}}'': The episode "The Return of Starbuck". Often the only episode of the series that some fans of the [[Series/BattlestarGalactica1978 original series]] will [[FanonDisContinuity accept as continuity]].
* ''Series/BattlestarGalactica2003'': Has this quite a few times as well, usually involving Cylons and humans co-operating, such as Athena's HeelFaceTurn and the rebel Cylon faction seeking Galactica's help against Brother Cavil. However the "enemy of my enemy is my friend" quote is actually used by President Roslin when she teams up with terrorist-turned-radical politician Tom Zarek, after Commander Adama tries to force her resignation.
* ''Series/BreakingBad'': Hector Salamanca hates Walter White and would like nothing more than to kill him. However, Walter knows that Hector hates his mutual enemy, Gustavo 'Gus' Fring, even more and gives him a chance for revenge. Through an impressive BatmanGambit, they lure Gus Fring, who has his own vendetta against Hector, to Hector's nursing home. [[spoiler:Hector proceeds to ding his bell one last time to detonate a bomb Walter planted on his wheelchair to take both himself and Gus Fring out.]]
** Later as of 'Rabid Dog' [[spoiler: Hank and Jesse, who have had a tremulous relationship at best, team up to take down Walt.]]
* ''Series/BuffyTheVampireSlayer'':
** Buffy teamed up with Spike to stop Angelus at the end of season 2. With some unusual fallout; because the main time she'd met him had been during this Enemy Mine situation, when Spike returned in season 3, Joyce thought that they were actually allies and let him in. In season four he also teamed up with them a few times for various reasons (once because Giles just paid him to), and by the fifth he ran out of a need for outside excuses and [[HeelFaceTurn turned into a straight ally]].
** Season 8 had Dracula team up with the Scoobies, who he hates (except Xander), for vengeance as the villains (Japanese vampires and a witch) had taken his power. [[RacistGrandma Also, because he was kind of a racist]].
** In "Prophecy Girl", Xander enlists his hated enemy's (Angel) help to storm the Master's lair, and save Buffy. Angel scoffs at that, so Xander shoves a cross in his face for extra convincing.
** A very brief one occurs in Season 3's "Choices," when the Mayor and Faith, in the interest of mutual survival, team up with the Scooby Gang in the high school cafeteria when demon spiders escape from the Box of Gavrok.
** They tease this with The Master and Buffy in Season 8, but it never actually happens, unless you count him trying to sneak attack Twilight while he and Buffy are fighting.
** The General very reluctantly works with the Slayers to fight the invading demon armies.
* ''Series/{{Castle}}'': In the season 5 finale, Beckett uncovers a murder she initially believes was the work of Senator Bracken, the man who hired a hitman to kill her mother. She then uncovers that it was actually the work of a hitman setting up to ''snipe'' Bracken in two days, and is now forced to work with him on the investigation of an attempted murder of a man she would like nothing less than to kill herself. The irony is not lost on her.
* ''Series/{{Charmed}}'': This happens several times when the Halliwell sisters must reluctantly team up with demons for various reasons that are in the best interests of both sides, such as preventing the existence of magic from being revealed to the mostly unaware human population or stopping a neutral third party whose plan, if successful, would result in the vast majority of combatants on both sides being exterminated.
** A strange case of this happens in Season 6's two-part season finale where that season's BigBad, corrupt Elder Gideon, teams up with his evil MirrorUniverse counterpart to trap two of the sisters in the MirrorUniverse where they team up with that universe's version of their most notorious recurring enemy, the demon Barbas (since demons are the good guys in that universe) before fighting and then teaming up with their own evil counterparts in order to return to their own universe. Unfortunately, that causes the two universes to become unbalanced resulting in the normal universe becoming too good and the mirror universe becoming too evil, which forces the sisters to once again team up with their evil counterparts to restore the balance between both universes by killing both versions of Gideon, who have each meanwhile teamed up with their own universe's version of Barbas. In short, the entire episode is a confusing mess of various EnemyMine scenarios.
* ''Series/{{Community}}'' has a really bizarre example in the episode "G.I. Jeff". Jeff falls into a coma and dreams he's a member of GIJoe. After a series of mishaps, he finds himself on the run from the unit with the other study group members (also imagined as G.I. Joe members). Eventually, he causes so much trouble, G.I. Joe and Cobra have to join forces to capture him.
* ''Series/DoctorWho'':
** Every story in Season 8 is about the Master coming up with some plan to destroy the world, someone (usually the Doctor) pointing out that performing this plan would end up screwing over the Master too somehow, and the Master teaming up with the Doctor to undo the damage.
** The serial [[Recap/DoctorWhoS18E7Logopolis "Logopolis"]]. Of course, the Master turns on the Doctor, tries to destroy the Universe rather than being unable to rule it, and then kills the Doctor by shaking him off a radio telescope into a parking lot. [[TheNthDoctor It isn't the end though, as the moment has been prepared for]]. Considering how the Master is just about the closest thing the Doctor has to a rival, they've certainly been forced to team up on any number of occasions throughout their history -- usually to stop a catastrophic evil that the Master himself unleashed, and invariably with the Master turning on the Doctor shortly before or after the problem is solved. Of course, the Doctor has been anticipating betrayal all along, and has almost certainly done something clever to come out ahead regardless.
** Happens in the conclusion of "Trial of a Time Lord", when the Master reveals that the prosecutor, the Valeyard, is actually the Doctor's EnemyWithout, whom will get the Doctor's remaining regenerations if he gets the Doctor executed. The Master helps the Doctor for two reasons: to have an enemy with which he's more familiar (the Doctor vs. the Valeyard) and to retain the chance to end the Doctor's existence personally.
** In [[Recap/DoctorWhoS28E13Doomsday "Doomsday"]], the presence of just four Daleks bumps an entire army of Cybermen down from "enemy" to "temporary ally". Once the Daleks start moving, Torchwood and the Cybermen appear to ignore each other in favour of the new targets.
** Happens again in [[Recap/DoctorWhoS30E17E18TheEndOfTime "The End of Time"]], where [[spoiler:the Master saved the Doctor from being disintegrated by Rassilon. It should be noted that [[ThirdActStupidity Rassilon brought the alliance, and thus his defeat, upon himself.]]]]
** And again in [[spoiler:[[Recap/DoctorWhoS35E1TheMagiciansApprentice The Magician's Apprentice]] The Doctor goes missing and Davros turns up.]]
** Differently, in [[Recap/DoctorWhoS31E12ThePandoricaOpens "The Pandorica Opens"]], [[spoiler:[[SpacePolice Judoon,]] [[ScaryDogmaticAliens Daleks,]] [[ProudWarriorRaceGuy Sontarans,]] [[CyberneticsEatYourSoul Cybermen,]] [[LizardFolk Silurians]], [[CombatByChampion Sycorax]], [[MayContainEvil Autons]] [[ContinuityPorn and a whole load of other races]] show up to [[SealedGoodInACan imprison the Doctor]] in an attempt to [[WellIntentionedExtremist stop the non-existence of the Universe.]]]]
** [[Recap/DoctorWhoS13E6TheSeedsOfDoom "The Seeds of Doom"]] features a plant maniac who employs a number of hired guns. They spend the first four episodes of the serial [[WhyDontYaJustShootHim chasing, capturing, and recapturing]] the Doctor and Sarah Jane, only to ally with them when the [[AlienKudzu Krynoid]] [[BodyHorror that used to be]] [[MinionWithAnFInEvil Keeler]] starts to get really huge, dangerous, and indiscriminately hungry for organic matter.
** In [[Recap/DoctorWhoS32E7AGoodManGoesToWar "A Good Man Goes to War"]], [[spoiler:the Doctor calls upon the aid of the Silurians, Judoon and a lone dishonored Sontaran alongside actual friends to rescue Amy. However, the Silurians and Sontaran's reasons for teaming up isn't so much the presence of a common enemy as it is the fact that they owe the Doctor a debt.]]
** In [[Recap/DoctorWhoS12E4GenesisOfTheDaleks "Genesis of the Daleks"]] when the Doctor has the chance to destroy the Daleks at their creation, one of the reasons he gives against this is that otherwise hostile races would be forced into alliances due to this.
** Comes close to happening in [[Recap/DoctorWho2013CSTheTimeOfTheDoctor "The Time of the Doctor"]], where, like in "The Pandorica Opens", various races gather round the planet Trenzalore to restart the Time War if the Time Lords return. However much of this war is unseen and slightly subverted in that everybody is reluctant to start the war. It finally becomes EnemyMine when on the other side, the Doctor and the Papal Mainframe, including the Silents, fight together.
** Apparently what happened after [[Recap/DoctorWhoS10E3FrontierInSpace "Frontier in Space"]], where the Master and Daleks tried to cause a war between Earth and Draconia after which they would [[WarForFunAndProfit invade the Galaxy]]. The humans and Draconians are told by the Doctor to form an alliance against the Daleks.
* ''Series/{{Farscape}}'':
** Played straight in the "Liars, Guns, and Money" trilogy when Moya's crew recruit various aliens who had tried to kill them in the past to help them pull off a heist.
** Played straight and subverted with John and Scorpius multiple times as John pretends to team up with Scorpius, then John is forced to team up with Scorpius to save Aeryn (twice!), then it looks like Scorpius has betrayed them but he really hasn't, then John betrays Scorpius only to have to go back and save him again. And then they end up teaming up with Scorpius again for the miniseries, still against John's better judgment.
* ''Series/{{Firefly}}'': Does this in the episode "Trash", where the crew joins up on a heist with Saffron, the psychotic seductress who tried to steal their ship a few episodes back. Rather amusingly subverted: [[spoiler: Saffron unsurprisingly double-crosses the crew, and the crew turns on her in return, having fully expected her sudden but inevitable betrayal]].
* ''Series/GameOfThrones'': This is the reason the Wildlings are all united under a single leader. Every tribe hates each others' guts: they just hate the idea of dying in droves to [[BiggerBad the White Walkers]] more.
* ''Series/GetSmart'': In one episode, Max Smart from [[GovernmentAgencyOfFiction CONTROL]] and Siegfried from [[NebulousEvilOrganisation KAOS]] team up against a man conspiring to destroy the world, since if he succeeded they would have nothing to fight about and would be out of a job.
* Nick and Renard's relationship in ''Series/{{Grimm}}'' is like that. In other circumstances they'll be enemies, and Renard even was a villain-like character at first. They became allies because they have a common enemy; The Royal Families.
* ''Series/{{Heroes}}'': This is the favorite way they deals with Sylar.
** Volume 3 had Noah Bennet work with ''Sylar'' to stop the escaped Level 5 villains. The two barely tolerated each other but seem to have ''bonded'' by the end of the 3rd episode. Then Sylar starts up with the brain-stealing again, causing Bennet to vow to kill him eventually.
*** What Noah meant could very likely refer to [[spoiler: ''taming'' Sylar. In Season 3, Episode 4, "I am Become Death", Peter is taken to a future timeline by his future self. In this timeline, Peter discovers a calm and collected Sylar, living in the Bennet household with a son named ''Noah''.]]
** Also, in the Volume 3 finale, Bennet frees all the Level 5 supervillains so they can help fight [[spoiler: Sylar, who's on the downswing of his HeelFaceRevolvingDoor trend]]. They all last maybe 3 minutes, tops.
** Volume 5 does this ''again'' when Peter realizes that in order to prevent Samuel Sullivan's plans from coming into fruition, he's going to need Sylar's help. Unfortunately, it meant getting himself stuck inside Sylar's head and dealing with the latter's VillainousBSOD. [[spoiler: Unlike the many times before, though, it works; the two save the day, and Sylar's HeelFaceTurn seems to stick this time.]]
* ''Series/HouseOfCardsUS'': In Season 3, the Republican and Democrat congressional leadership team up to oppose President Underwood's America Works program. It backfires against the Democrats when, after America Works goes bankrupt after they cut off the money, Underwood uses it as justification to renege on his promise to not seek a term of his own in the White House.
* ''Series/KamenRiderDecade'': In the final arc, the separate ''Franchise/KamenRider'' worlds are pitted against each other in a giant war, with the losers being erased from existence, so naturally Riders and Kaijin put aside their differences in order to protect their universes. Tsukasa, in the meantime, tries to convince everyone to focus on the common enemy in [[LegionOfDoom Daishocker]]; it works almost too late, but then the death of [[Series/KamenRiderX Apollo Geist]] actually accelerates the destruction rather than stopping it. [[NiceJobBreakingItHero Dammit]].
* ''Series/LawAndOrderCriminalIntent'': Detective Goren's [[WorthyOpponent arch-nemesis]] Nicole Wallace supplies him with information allowing him to [[spoiler: prevent her fiancé from killing his own daughter, who Nicole loved as her own.]] Ironic, considering [[spoiler: Nicole killed her real daughter]].
* ''Series/{{Leverage}}'': Has Nate teaming up with [[EvilCounterpart Sterling]] for "The Zanzibar Marketplace Job".
** Also in "The Last Dam Job", the team brings in a few people who have been enemies in the past. Eliot and Quinn, in particular, have a perfectly amicable working relationship despite the fact that they tried to beat one another to death in the Season 1 finale.
* ''Series/{{Lost}}'': Has done several times, both in regards to the survivors and the Others.
** In Season 3, when [[ChainedHeat Kate and Juliet are handcuffed together]] and forced to work together to escape the smoke monster's repeated attacks. It turns out Juliet herself handcuffed them together to try and gain Kate's trust.
** Throughout the second half of Season 4, Ben joins forces with Locke's group to fight the freighter mercenaries.
** At the end of Season 4, Kate and Sayid team up with Richard and his [[RedshirtArmy army of Others]] to rescue Ben from the mercenaries.
** Then there is the reluctant team-up between Losties and the Others of 1977 in the Season 5 finale.
** Finally, Season 6 had everyone teaming up against the new BigBad. Ben Linus and Charles Widmore sure were surprised to find themselves working toward a common goal!
* ''Series/TheManFromUNCLE'': Had this trope as part of its central premise, as THRUSH forces the Western nations and their ideological opponents the Soviet Union to cooperate in forming UNCLE.
* ''Series/{{MASH}}'': Charles Winchester, ordinarily a foil to Hawkeye and B.J., will occasionally join forces with one of them against the other (usually as part of an EscalatingWar), or with both of them against a common target. The latter moments tend to highlight Winchester's JerkWithAHeartOfGold qualities, given that the people he targets are always bullies themselves, such as a racist colonel, or a man bigoted against stutterers, or the insanely jingoistic Colonel Flagg.
** Flagg's mistake was trying to blackmail Charles into helping him with a threat of prison. Charles doesn't like being manipulated in that way, and knows precisely how to deal with it (he tricks Flagg into trying to arrest Colonel Potter, and the Mayor and police chief of Ouijonbou, all three of whom have the right contact to get rid of Flagg for good now that they have something solid against him).
** One good example is the episode where Hot Lips is being accused of being a communist by a congressional aide. Without even being asked, Winchester takes a stand against the aide and takes up for Margaret.
** Due to a misunderstanding and accident of timing, the Colonel who sent Charles to the 4077th attacks Margaret (thinking she's the woman Charles procured for his entertainment). The Colonel offers to transfer Charles back to Tokyo, and all he has to do is lie about what happened with Margaret. Charles is clearly tormented by the decision, but chooses to tell the truth as he cannot stand to destroy Margaret's career for his own (relatively modest) gain.
* ''Series/{{Merlin1998}}'': Merlin himself outright states that this is his motivation for allying himself to Uther. Uther's enemy, Vortigern, is Merlin's enemy and has joined forces with an even worse enemy.
* ''Series/NaturallySadie'': While not as big of enemies as most of the other examples, this show uses this a lot to get characters who dislike one of the main cast to work alongside them, usually for a school project. One memorable incident has almost the entire teenage cast working together in detention while the remaining member teams up with [[EveryoneCallsHimBarkeep Mallcop]] -- two examples in one episode, there are many more.
* ''Series/TheNewAdventuresOfRobinHood'': In "Attack of the Vikings", Robin must rescue both himself and his archenemy when he and Prince John are kidnapped by Vikings.
* ''Series/{{Nikita}}'':
** {{Defied}} when Division's rival Gogol tries to enlist Nikita to help them recover a dirty bomb.
-->'''Ari Tasarov:''' The enemy of my enemy--\\
'''Nikita:''' --is just another man standing in my way.
** Played straight later when Gogol, Division, ''and'' Nikita collaborate to get Alex out of danger after she confronts Sergei Semak, the uncle who had her father killed so he could take over the family business.
* ''Series/OnceUponATime'': In the Season 1 finale, Emma and Regina briefly team up [[spoiler: in order to save Henry's life]].
** Regina later teams up with Mr. Gold in Season 2, [[spoiler: in order to stop Regina's mother, Cora, from getting into the real world]].
** Season 2 ends with a massive one between Regina, Emma, Snow, Charming, Gold, and Hook to save [[spoiler: Henry (again) after he gets kidnapped to Neverland]]. The team-up has...varying levels of success.
** In Season 4, ArcVillain Maleficent eventually decides to form one in the final three episodes with Emma and company, striking a deal for Emma to find Mal's daughter, Lily.
* ''Series/{{Oz}}'': Happens all the time in this prison drama as the various factions struggle for control of the drug trade, or seek to murder a rival.
* ''Series/PersonOfInterest'': In her war against [[DirtyCop HR]], Joss Carter first allies herself with crime boss Carl Elias and then has him form a temporary alliance with the rival Russian syndicate.
** At one point, Reese and Shaw team up with [[WellIntentionedExtremist Hersch]] in order to take down Vigilance, since they need to find Finch and he needs to find Control, and Vigilance has both of them.
** Early season three Team Machine also teamed up with [[TheCracker Root]] a few times, before she had actually graduated into TokenEvilTeammate. The most notable example of this was when Finch, Fusco, and Shaw were running out of time to save a [[RoaringRampageOfRevenge rampaging]] Reese, and they decided that [[GodzillaThreshold Root was the only way to get to him]].
* ''Franchise/PowerRangers'': Certain incarnations have done this, particularly ''Series/PowerRangersZeo''. The BigBad of the moment has brainwashed TheHero and the SixthRanger's attempt to save him has failed. It turns out that last year's villains have the technology to send the rest of the team over. They do, just to screw around with the new villains.
** Likewise, a villain variant of this was completely subverted in ''Turbo: A Power Rangers Movie.'' Newly anointed BigBad Divatox calls [[DiminishingVillainThreat decayed villain]] Rita Repulsa for help, and gets laughed at. Rita's CaptainObvious response is that if she knew how to defeat the Rangers, she would have done it already.
** On the ''Franchise/SuperSentai'' side, [[Series/KaizokuSentaiGokaiger Basco ta Jolokia]] is a rare case given his [[Main/ChronicBackstabbingDisorder track record.]] [[spoiler:Zangyack would have right out won against the team in #43 if Basco had not suddenly turned against Zangyack. He even gives Marvelous back his [[Main/TransformationTrinket Mobirates and Ranger Key.]] Of course, he has his [[Main/ItsAllAboutMe own]] [[Main/GottaCatchThemAll reasons.]]]]
* ''Series/{{Revolution}}'': As of episode 14, the Resistance and the Georgia Federation have allied to open a two front war against Monroe.
** In season 2, the heroes end up allying with pretty much all their surviving enemies since they need to top the Patriots before they take over most of the old United States and enact their genocidal policies.
* ''Series/RobinHood'': In the first season of the BBC's show Robin and the sheriff temporarily fight side-by-side in order to defeat a group of Saladin's assassins. In the third season Robin and Guy team up in order to [[spoiler: save their half-brother Archer from execution.]]
* ''Series/SaturdayNightLive'': No matter how much Sean Connery would try to antagonize Alex Trebek during the Celebrity Jeopardy skits, the two of them would often commiserate over another contestant's idiocy--note the skit where they both snark on Anne Heche's nutty behavior.
* ''Series/{{Scrubs}}'': Even features this trope when Dr. Cox and Dr. Kelso team up to break the spirit of an overly cheery coworker. However, she outsmarts them and they are back to mutual hate by the end of the episode.
** Another episode featuring Dr. Kelso has him realizing one of the reasons the hospital keeps going is that everybody is united against ''him''. In the future he'll purposefully invoke it to keep the staff going in moments of stress or instability.
* ''Series/{{Smallville}}'': In the episode "Asylum" [[Characters/SmallvilleMeteorFreaks Ian Randall and Eric Summers]] ask for the help of [[TheHunter Van McNulty]] because he knows Clark's weakness.
** There are also various times in season nine where the good guys have teamed up with [[CorruptCorporateExecutive Tess]] [[WellIntentionedExtremist Mercer]]. Chloe in particular joined forces with Tess in episodes like "Upgrade" and "Sacrifice" so that they can both protect their secrets. (Tess's season ten HeelFaceTurn takes the 'enemy' out of the equation, so all post-S9 teamups aren't this trope.)
* ''Series/StargateAtlantis'': Sheppard and a wraith cooperated to escape custody of Kolya in the episode "Common Ground". This included the wraith feeding on Sheppard to have the strength to fight off their enemies, giving it the opportunity to double-cross our hero. However, he returned all the LifeEnergy he took (and possibly made up for a few months Sheppard spent in a time-dilation field) and Sheppard made good on his promise to let it go free. The wraith in question, later dubbed "Todd", would become a recurring character, and is notable for being unusually sociable for a Wraith, even ''joking'' with the heroes.
** Taken UpToEleven in the final battle against the Asurans, where the Earth, Traveller, and Wraith ships fight side by side against the Asuran warships in what is hands down the single most awesome space battle any of the three series has managed (''Series/StargateUniverse'', being set on a CoolStarship, had a chance to top it before it was cancelled). This is even more impressive given the distinctly quarrelsome nature of the Wraith, thus the battle is a meld of nine factions (7 Hives, Atlantis and the Travellers) rather than 3 as some may think.
** After he escaped the first time, Michael teamed up with the Atlantis team to bring down his former hive after his queen snubbed him. This didn't work out well for either side.
* ''Series/StargateSG1'': Features this a great many times. It seems to be one of the favorite negotiating tactics of the Tau'ri in particular.
** Ba'al has had to join forces with SG-1 to defeat his master Anubis and the greater threat of the Replicators during the "Reckoning" two-parter. This is not the last time they'd work with him. Initially subverted, as Ba'al asked SG-1 for an alliance and was flat-out rejected by Jack O'Neill.
-->'''O'Neill:''' I've got a better idea, instead of helping you, why don't we sit around and watch you get your ass kicked? That way you'll be dead, and we'll be glad.
** Special mention just ''has'' to go to the two-parter "The Quest", where SG-1, Ba'al, ''and'' [[DarkMessiah Ori messiah Adria]] team up to solve Morgan le Fay's puzzles.
** There is also an ''SG-1'' episode entitled "Enemy Mine", though it is unrelated to this trope at first. The conclusion is somewhat an example of this trope, as the Colonel overseeing the mine and the Unas definitely considered each other enemies until the compromise where they agreed to work the mine themselves so long as it contributed to killing some Goa'uld. Plus they look a little ''Enemy Mine'' Lou Gossetty, what with the scaly skin and labored manner of speaking.
** The original alliance (the one led by Ra) against Anubis, whose crimes were apparently considered unspeakable, even amongst the System Lords. [[EvenEvilHasStandards Think about that]].
*** Sokar was banished from the System Lords for much the same reason, and by much the same method.
*** According to Thor in "Fair Game", it is precisely because of the concept of "enemy of my enemy" that the Goa'uld System Lords banded together in the first place. Due to their AlwaysChaoticEvil nature, however, it takes a serious threat (like the Tau'ri) to convince them to work together for any extended length of time.
** The "Giant Aliens" (later named Omeyocans by the novel ''City of the Gods'') in the episode "Crystal Skull" quote the full line verbatim to SG-1. In Mayan, no less. [[WhatHappenedToTheMouse And then they're never heard from again.]]
** Then there's the various times the SGC temporarily allied with Lord Yu. To paraphrase Daniel Jackson, Yu is not to be liked or trusted, only trusted to make a [[PragmaticVillainy practical decision]] unhampered by the [[StupidEvil usual Goa'uld mindset]].
* ''Franchise/StarTrek'': In general this franchise is ''all'' over this trope. The Klingons team up with the ''Enterprise'' crew in "Day of the Dove", the Klingons allying with the Romulans against the Federation and then later with the Federation against the Romulans, ''Voyager'' teaming with the Borg in "Scorpion", TheAlliance of the Alpha Quadrant (and the poor, forgotten Beta Quadrant!) against the Dominion, etc., etc.
* ''Series/StarTrekDeepSpaceNine'': Kira, Damar and Garak loathe each other. The fact that Damar killed Garak's LoveInterest and Kira's surrogate daughter a few seasons back [[{{Understatement}} does not help]]. Eventually, the fate of Cardassia, and with it the entire Alpha Quadrant, rests on the three of them putting aside their differences and working together to create a rebellion to overthrow the Dominion control of Cardassia. It even leads to the beginning of FireForgedFriends.
* ''Series/StarTrekEnterprise'': "Dawn," "Storm Front" (Archer fighting alongside Silik)
** The Andorians and Vulcans learning to work together have ''some'' shades of this trope (though the fact that one of the enemies faced together is extremist elements in the Vulcan governments complicates matters), especially during the last season (the Romulans' meddling intended to break the Coalition ends up strengthening it by giving them a common foe: the Romulans. Oops).
* ''Series/StarTrekTheNextGeneration'': "Darmok". In the midst of the plot, Picard retells similar parts of ''Literature/TheEpicOfGilgamesh'', highlighting this as OlderThanDirt.
** Rather famously, the [[http://memory-alpha.org/en/wiki/Tamarian_language Tamarian]] for this trope is "Darmok and Jalad at Tanagra."
** ''TNG'' also did it in "The Enemy", where Geordi and a Romulan had to work together.
* ''Series/StarTrekVoyager'': This is the plot, although by the third season the rival crew factions have been forgotten.
** In a later season of ''Voyager'', in the episode where the Delta Flyer is introduced, B'Elanna Torres learns that the Maquis lost back home. She turns depressed and does dangerous things in the Holodeck with the safety off, and because most of the ship has all but forgotten their initial division between Starfleet and Maquis, they don't know what's wrong with her.
** When they first re-establish contact with Starfleet, Janeway mentions to Chakotay that she actually ''had'' forgotten the implications of the mixed crew after they had been working together for so long. She becomes concerned for what happens when they got home, since as far as Starfleet are concerned, the former Maquis crew are ''still'' wanted terrorists?!
** Janeway's [[spoiler: alliance with the Borg in Delta Quadrant against Species 8472 (where the crew picks up 7 of 9).]]
* ''Series/{{Supernatural}}'': In season 5, Sam, Dean, and the others join forces with the demon Crowley in an attempt to defeat Lucifer.
** An odd example when [[spoiler:Gabriel]] joins forces with the Winchesters and goes up against Lucifer, [[spoiler:resulting in his death]], since he spent most of the time he knew them tormenting them. [[spoiler:Although it's implied that he knew that they'd eventually do, which is why he gave them such a hard time.]]
** And later join forces with [[spoiler:Meg]] to defeat [[spoiler:Crowley.]]
*** Which is an interesting use of this trope, seeing as [[spoiler: Meg was a [[SycophanticServant staunch]] Lucifer loyalist whom the boys had fought against in the ''same episode'' they first allied with Crowley.]]
** In season 7, the Winchesters are aided by several old enemies (Meg, Crowley, and the [[MonsterProgenitor Alpha vampire]]) at different points and for various reasons in order to defeat the [[EldritchAbomination Leviathans]]. [[spoiler: Of the three, Crowley is the one who double-crosses them when things are over and done with.]]
** [[spoiler: When Dean was trapped in Purgatory for a year between seasons 7 and 8, he teamed up with a vampire named Benny in order to escape.]]
* ''Series/TeenWolf'': Scott, Allison, Chris, and Kate versus Alpha Peter Hale in the season one finale.
** And then not-so-Alpha Peter with Derek versus Gerard and Kanima Jackson in season two.
* ''Series/TerraNova'': The episode "Now You See Me". Taylor and Mira's "Your place or mine" hostage struggle is interrupted by a pair of young and territorial Slashers. Leading to Taylor to hand a knife to Mira and say “We can fight each other, or we can fight them.”
* ''Time Gentleman Please'': PlayedForLaughs. The Pub Landlord ''loathes'' the French, due to his wife running away with a Frenchman and taking his beloved son away from him. In one episode, the Frenchman walks into his pub, causing him to immediately begin a tirade, before the Frenchman cuts him off and reveals that she's left ''him''... for a ''German''.
--> '''Pub Landlord''': *''Shakes hand''* The ''[[WorldWarTwo mutual]]'' enemy, all hostilities are now ceased!
* ''Series/{{The Vampire Diaries}}'': Damon will take a break from harassing Stefan if there's a bigger threat, or if it's in his interest.
** If the promo for "Before Sunset" is any indication the brothers will work with Klaus to stop Alaric.
* ''Series/TheWire'': Shotgun-toting BadassLongcoat stick-up boy Omar Little and Harper's Magazine-reading Uber-BadassBookworm assassin Brother Mouzone team up to take on Stringer Bell after a failed LetsYouAndHimFight. ''And it is awesome''.
* In the episode ''A Necessary Evil'' of ''Series/XenaWarriorPrincess'', Xena enlists the aid of her enemy Callisto to fight Velasca, an Amazon who acquired [[AGodAmI the powers of a goddess]]. At that point, Callisto had recently become immortal and was the only person available to go up against her, despite Gabrielle's protestations.
* ''Series/TheXFiles'': The episode "En Ami". And "Tunguska"/"Terma" as well, although that turned out to be a set-up.
* In an episode of ''Series/TheFlash2014'', the titular hero is forced to temporarily team up with Leonard Snart (AKA Captain Cold) and his sister Lisa (AKA Golden Glider) in order to help transport a bunch of dangerous meta-humans from S.T.A.R. Labs to [[Series/{{Arrow}} Lian Yu]]. Naturally, Snart betrays Barry and releases the meta-humans (except for one, whom he kills for ostensibly owing him money), figuring they now owe him one. At the end of the episode, Barry admits he probably shouldn't have trusted a known felon.
* The premise of the upcoming show ''Series/LegendsOfTomorrow'' is that a team up of the some of the heroes and villains of the ''Series/{{Arrow}}'' and ''Series/TheFlash2014'' franchise is necessary to stop an immortal villain, as claimed by the time-traveling Rip Hunter. Leonard Snart even points out that he can't imagine a future where he's considered a hero (he would probably consider it an insult). Hunter points out that they're not heroes, they're ''legends''.
[[/folder]]

[[folder:Newspaper Comics]]
* The Fox siblings of ''ComicStrip/FoxTrot'' have teamed up on each other in every possible combination (Peter and Paige vs. Jason, Peter and Jason vs. Paige, Paige and Jason vs. Peter).
* A hilarious example occurs in ''ComicStrip/{{Peanuts}}'', when Lucy arrives one day to find that Frieda was in her claimed territory (lounging in front of Schroder's couch). Dejected, she and Snoopy (who also enjoyed lying there and listening to piano music), commiserate on a curb... until Snoopy comes up with the idea of [[spoiler: Lucy doing Snoopy's own famous aerial attack on Frieda]]. One swirling girl-fight later, a slightly battered (yet victorious) Lucy is shaking Snoopy's paw in thanks.
[[/folder]]

[[folder:Professional Wrestling]]
* Since most wrestlers [[{{Kayfabe}} theoretically]] have little say on who they either fight or team with, an EnemyMine often occurs when an on-screen authority figure randomly decides two people who don't like each other will team up against a common enemy. This used to happen all the time with Wrestling/StoneColdSteveAustin and [[Wrestling/DwayneJohnson The Rock]]. An example would be when Stone Cold was booked to fight Wrestling/TheUndertaker and Rock against Wrestling/TripleH at ''Over the Edge 1999,'' one ''Raw'' saw Austin and Rock being forced to team together against Undertaker and Wrestling/TripleH. Since Undertaker and Wrestling/TripleH were members of the same stable, the story of the match was whether Austin and Rock (who only weeks earlier were in a bitter feud) could put up with each other long enough to survive.
** This specific Enemy Mine would occur several times through 1999, not all of them being in official matches. For example: the ''[[Wrestling/WWESmackDown SmackDown]]'' pilot in which the [[Wrestling/TheCorporation Corporate]] [[Wrestling/MinistryOfDarkness Ministry]] came together in the first place.
*** Stone Cold and The Rock would continue to find themselves unwilling partners as late as 2002, when they teamed up the week before ''Wrestling/{{WrestleMania}} X8'' to face the Wrestling/NewWorldOrder in a handicap match. By that point you could argue that Austin was Rocky's most frequent tag team partner behind Wrestling/MickFoley.
* Pro Wrestling tag-team title belts can also serve from an Enemy Mine, as a {{face}} and a {{heel}} are thrust into a match with the titles on the line, and despite their bickering and contempt for each other, manage to win. They're then obligated to continue teaming to defend the belts, arguing and taking potshots at each other all the while, until one of them finally decides being a champion isn't worth the headache and turns on the other. A 2007 example is Wrestling/MattHardy and Wrestling/MontelVontaviousPorter on ''[[Wrestling/{{WWESmackDown}} WWE SmackDown!]]''.
** Slightly {{subverted|Trope}} in 2008 with Wrestling/JohnCena and Wrestling/{{Batista}}, who won the tag titles but were bitter enemies facing each other, and couldn't co-exist, and lost the tag titles back on their first defense the next week.
*** Even more so with Cena and Wrestling/TheMiz who couldn't co-exist as tag team champions ''for ten minutes'' before Miz betrayed Cena.
*** As an interesting side note, all four of John Cena's tag title reigns in WWE have been with enemies or rivals, and each one was shorter than the last as a result. His first World Tag Team Championship reign with Wrestling/ShawnMichaels came during the lead-up to their Wrestlemania match and ended the night after that event, bringing their total reign to 63 days. His second World Tag Team Championship reign was the aforementioned reign with Batista, which lasted seven days. He later won the WWE Tag Team Championship with Wrestling/DavidOtunga as an unwilling member of The Nexus, losing the title the very next day. His final WWE Tag Team Championship reign was the one with The Miz mentioned above, lasting about ten minutes.
** Hilariously {{lampshade|Hanging}}d in a backstage segment with Team Triple H at ''Wrestling/SurvivorSeries 2007''. Wrestling/{{Kane}}, Wrestling/JeffHardy, and Wrestling/{{Rey Mysterio|Jr}} call out Wrestling/TripleH on his numerous past offenses against them, which [[RedBaron "the Game"]] sheepishly apologizes for. However, the team acknowledges that while they don't necessarily like one another, they like the other team ''even less''.
* Wrestling/{{CMLL}}'s Torneo Increibles de Parejas, Arena Puebla and Torneo Nacional de Parejas Increibles all require all teams who wish to enter them to be composed of technico and rudo.
* The Wrestling/AmericanWrestlingAssociation had an angle in 1985 where the Russian faction of Boris Zhukov and Chris Markoff injured Wrestling/RickMartel. Martel's friend Mad Dog Vachon came looking for revenge and turned to the only man he felt was dirty and ruthless enough to stop the Russians: his old enemy Nick Bockwinkel.
* Wrestling/{{WCW}} had the Lethal Lottery, a competition made up of tag teams who didn't like each other, the winners getting to advance to the Battlebowl battle royal where they could beat each other up with impunity, giving them ''some'' incentive to win.
* ''Wrestling/SurvivorSeries 1995'' featured a Wild Card match with the team of Ahmed Johnson, Wrestling/ShawnMichaels, Wrestling/DaveyBoySmith, and Sid against [[Wrestling/ScottHall Razor Ramon]], [[Wrestling/ShaneDouglas Dean Douglas]], Wrestling/OwenHart, and Wrestling/{{Yokozuna}}. The faces and heels did not get along, causing the elimination of their teammates.
* In a interesting twist, ''The Rise and Fall of Wrestling/{{ECW}}'' showed that [[Wrestling/{{Tazz}} the Tazmaniac]] and Wrestling/{{Sabu}} hated each other in real life, but ended up becoming one of the company's top tag teams prior to Sabu bailing on the company before ''The Three Way Dance'' on April 8, 1995.
** Wrestling/TommyDreamer and Wrestling/{{Raven}} became a tag team for a while.
* During the first Los Independientes attack on CMLL in April 2010, CMLL regulars Averno, El Texano Jr and El Terrible took the opportunity to blindside Brazo de Plata, Wrestling/{{Mistico}} and Jon Strongman when they ran out try and save La Sombra, El Hijo del Fantasma and La Máscara from the independent circuit invaders.
* In 2010, the rise of the PowerStable Wrestling/TheNexus on ''[[Wrestling/WWERaw Raw]]'' saw the [[RivalsTeamUp teaming up of former rivals]] like Wrestling/JohnCena, Wrestling/{{Edge}}, and Wrestling/ChrisJericho after each got ambushed by Wrestling/TheNexus.
** Subverted at ''Wrestling/{{SummerSlam}} 2010'', when usual Cena rival Wrestling/TheMiz tried to play on the "need" for this (especially after Cena honestly tried to keep them together, but Edge and Jericho proved incompatible) to make Cena beg him to round out the team... by the time Miz tried to pull the trigger, Cena declared that Miz had taken too long to make up his mind and that Cena had found someone else who said yes first: Cue the triumphant return of one [[Wrestling/BryanDanielson Daniel Bryan]].
* Wrestling/TeamHellNo is a great example, with Daniel Bryan and Kane being forced to enter anger management together, hug out their aggression in the middle of the ring, and become a tag team. They won the tag team titles completely on accident, and they both would spend most of their time bickering and arguing, which through sheer luck would lead them to win after win.
* Often happens in Wrestling/{{Royal Rumble}}s and Battle Royals, as many wrestlers team up to eliminate the biggest wrestlers.
** The December 12, 2007 ''[[Wrestling/{{WWERaw}} Raw]]'' featured a special "15th Anniversary battle royal," including such stars of the past as former [[http://www.wrestling-titles.com/wwe/wwe-h.html WWE Champions]] [[Wrestling/BobBacklund Mr. Bob Backlund]] and Wrestling/SgtSlaughter, former [[http://www.wrestling-titles.com/wwe/wwe-world-t.html WWE World Tag Team Champions]] [[Wrestling/MikeRotunda Irwin R. Schyster]], [[Wrestling/{{Demolition}} Repo Man]] and Wrestling/AlSnow, and..."Gillberg". He did his dramatic entrance, and ''everyone'' in the match united to promptly eliminate him first. This is a notable subversion of the above point, since as a former [[http://www.wrestling-titles.com/mexico/uwa/wwf-lh.html WWF World Light Heavyweight Champion]], Gillberg would have been one of the smallest guys in the match. Commentator [[Wrestling/JerryLawler Jerry "The King" Lawler]] even ''said,'' "Not Gillberg, he just got here."
* In the Mexican EAW, Wrestling/LondonAndKendrick teamed up with their long time rivals, Wrestling/TheWorldsGreatestTagTeam over Marco Corleone harassing Charlie Haas's wife Jackie and London and Kendrick's then third partner, Reby Sky. Corleone had backup from El Hijo de Rey Misterio and Zach Gowen so they needed the numbers to avoid more inter gender matches.
* Pretty much {{enforced|trope}} by Madison Eagles and Jessicka Havok on Wrestling/{{SHIMMER}} Volume 70, who were on separate [[RoaringRampageOfRevenge paths of revenge]] against Nicole Matthews and Portia Perez, met up, and took the Global Green Gangsters along with them.
* In January 2015 at the ''IWC Reloaded'' event, the first show under a new owner based around a randomizing "reset button" gimmick, Joe Rosa & Jimmy Vega$, members of rival {{power stable}}s Faces Of Change and Founding Fathers, as well as personal enemies, won the tag team titles and had to be threatened with suspension to agree to act civil afterwards. At the same event, John [=McChesney=] and Jimmy Nutts teamed up against Team Big League for interfering in their match, [=McChesney=] presumably being a former member of the group from then on.
* In the World Wrestling League, Savio Vega had been determined to see Heavyweight Champion Glamour Boy Shane fail, with President Richard Negrín sending out former champion Monster Pain to ensure Vega stopped messing with Shane. But Shane came to Vega's aid at the 2015 ''Guerra De Reyes'' event when Negrín [[YouHaveOutlivedYourUsefulness fired Vega]] and then formed "The Gentleman's Club" with Escobar, La Amenaza Bryan, Joe Bravo, Hiram Túa and freshly crowned Heavyweight Champion [[Wrestling/AlbertoDelRio El Patron Alberto]], who all beat Vega bloody.
* Enforced at ''WWN Live Mercury Rising 2015'', where Mia Yim and the Kimber Bombs were set to take on The Canadian Ninjas and Nikki Storm. Andrea of Valifornia ran out and beat Storm senseless while stable leader So Cal Val informed Portia and Nicole that Andrea had replaced Nikki.
[[/folder]]

[[folder:Radio]]
* In the ''Stanley Baxter's Playhouse'' episode "The Pool", a landowner arrests a poacher and then slips in the river and injures himself. The two of them, the poacher handcuffed and hogtied and the landowner unable to walk, must find a way of surviving on a Scottish riverbank in late winter. It turns out they have more of a history than that...
[[/folder]]

[[folder:Roleplay]]
* In ''Roleplay/TheGamersAlliance'', [[WellIntentionedExtremist Kagetsu I]] begins working with the Grand Alliance against Arawn Losstarot when the Alliance saves Kagetsu's wife Marya from Arawn's stronghold. Likewise a group of [[ReligionOfEvil clerics of Mardük]] and [[WorthyOpponent Samachi]] work with the Alliance against the [[TheLegionsOfHell Northern Horde]] during the battle of Vanna despite their animosity which stems all the way from the Great War.
* In ''Roleplay/SurvivalOfTheFittest'', Shameeca Mitchell and Heath Trennoby enlist the aid of AntiVillain Bobby Jacks in order to mount a rescue from [[JerkAss all around asshole]] Lenny Priestly. Admittedly Shameeca hadn't met Bobby before this point, but she was well aware that he was a killer.
* In Roleplay/DinoAttackRPG, several classical LEGO villains, most notably [[DastardlyWhiplash Sam Sinister]], [[ChaoticEvil The Brickster]], and [[TakeOverTheWorld Evil Ogel]] ended up joining the team to combat the threat of mutant dinosaurs.
* In Chapter One of Blog/OffThePageAndIntoLife, Gail and Terrence have hated one another since childhood, in no small part thanks to their mutual interest in Henry. However, when [[ManipulativeBitch Madame]] [[TheFaceless Blue]] begins spreading lies about them, they agree to work together to get rid of her. Gail even lampshades it, remarking that they're NotSoDifferent, and probably would've taken over the world by now if they didn't hate each other so much.
* ''Roleplay/STOForumVersusThreadRP'' somewhat encourages this. On the one hand, the encounters are somewhat easier with two or more players working together since they can cover for each other, but on the other hand only two characters can get off the planet in the end. Examples so far:
** Eleya and Kang join up early on in a swamp after she gets stuck in the mud and he rescues her. Averted in that the two of them actually seem to like each other.
** Played straight with the other two. Torpal initially tries to kill 007. 007 shoots him nonfatally in both legs and gives him the option to join up or face a CoupDeGrace. Torpal grudgingly agrees. [[spoiler:Breaks down almost immediately when they run into Jem'Hadar and try to use the other as bait. 007 comes out on top and Torpal dies.]]
* The one thing that will unite the Pro-Godmodder, Neutrals, and Anti-Godmodders in ''Roleplay/DestroyTheGodmodder'' is some giant boss that [[KillEmAll wants to kill everyone]].
[[/folder]]

[[folder:Tabletop Games]]
* ''TabletopGame/MagicTheGathering'' has a number of scenarios:
** Almost all cards in ''TabletopGame/MagicTheGathering'' are divided into one of five categories, defined by certain characteristics and assigned a colour. The five colours are seen on the back of the cards in a pentangle. The characters and creatures associated with any particular colour are hated by the colours on either of the nearer points, but even they will ally to fight against a colour further away (physically ''and'' thematically) from one of them.
** This forms a significant part of the dynamic for the good guys in the Archenemy variant (since they can easily be colors that either do or would hate each other slightly less than they hate the main opponent).
** The events of the ''Zendikar'' block have the vampires, elves, humans, Kor, minotaurs, goblins, merfolk and what-have-you uniting against the [[EldritchAbomination Eldrazi]]).
** In the ''Scars of Mirrodin block'', the Mirran forces in all five colors were forced to team up against Phyrexia... although the Black-aligned section was wiped out by the second set, and [[TheBadGuyWins Phyrexia won in the end]].
* ''TabletopGame/MageTheAwakening'' generally sees the Pentacle Orders locked in battle against the [[AncientConspiracy Seers of]] [[DespotismJustifiesTheMeans the Throne]], with [[KnightTemplar Banishers]] attacking both sides. However, when [[PowerBornOfMadness The Mad]], [[YourSoulIsMine Reaper Legacies]] or the [[EldritchAbomination Abyss]]-aligned [[OmnicidalManiac Scelesti]] show up, all three sides will most likely declare a truce to stop them.
** ''TabletopGame/MageTheAscension'' has pretty much the same dynamic, with the Traditions and the Technocracy setting aside their conflict long enough to take down a [[OmnicidalManiac Nephandus]] or [[PowerBornOfMadness Marauder]].
** ''TabletopGame/WerewolfTheForsaken'' does the same thing as well, with the Forsaken and the Pure reluctantly willing to put aside differences and put down Bale Hounds or the Idigam whenever they pop up. An entire Lodge, the Lodge of the Hunt, exists to invoke this trope, bringing together werewolves who have a common ArchEnemy.
* ''TabletopGame/{{Warhammer 40000}}'' very, ''very'' occasionally has instances where the more reasonable factions will hold off on killing each other to deal with a mutual threat. For a few minutes, anyway.
** This most common variant occurs between forces of the Imperium, Eldar, and Tau against Tyranids, Necrons, or Chaos, and matching temporary alliances may occur between Chaos, Orks, and Dark Eldar, as prominently seen during ''VideoGame/DawnOfWar: Winter Assault''.
** The Eldar, being [[ManipulativeBastard who they are]], will often manipulate any allies they do make so that they take the brunt of the fighting (and thus causalities), in essence back-stabbing their allies during the alliance, as well as overtly so 5 minutes before its usefulness ends. Their evil cousins, the Dark Eldar, pretty much always do the same.
** It wouldn't be too much to suggest that this is the standard Ork state of being. Individual Orks are naturally hostile to everything else, even each other, but they will form into tribes to fight other tribes, and no matter how much the Ork tribes fight each other, they'll nearly always join forces to fight non-Orks.
** ''VideoGame/DawnOfWar II'' has a new mode which exemplifies this, known as "The Last Stand", where a Space Marine Captain, an Ork Mekboy and an Eldar Farseer cooperate to HoldTheLine against a swarm of enemies. The ''Chaos Rising'' expansion throws the Chaos Sorcerer and the Tyranid Hive Tyrant into the mix of heroes in the play mode, which technically cements-- if it wasn't apparent with the widely opposing team we had before-- that the game mode is not to be taken as canon, especially when a loyalist Marine cooperates with a Chaos Marine in any way.
** Rules for the 6th Edition allow "allies"; if the player's army allows, they can take a HQ and a Troop choice (or more if they really want to) from another army. Specifically, the categories ''Desperate Allies'' and ''Unholy Alliance'' allow players to [[InvokedTrope invoke]] this trope if they want.
* In ''TabletopGame/{{Paranoia}}'', even if someone's ideology is directly opposed to yours (Psion vs. Anti-Mutant, Corpore Metal vs. Frankenstein Destroyers), alliances can always shift to suit the demands of the moment. You can always hose them later.
* Several years ago, Arcanacon in Australia featured a freeform called "''Film/MarsAttacks'' the ''TabletopGame/WorldOfDarkness''". The blurb for the game included:
--> Will the Camarilla fight alongside the Sabbat?
--> Will the Garou fight alongside the Wyrm?
--> Will the Traditions fight alongside the Technocracy?
--> Will the Seelie fight alongside the Unseelie?
--> ...and will the [[CloudCuckooLander Malkavians]] fight alongside the Martians?
* Just about all the Successor States in ''TabletopGame/{{BattleTech}}'' was quite happy to blow each other to kingdom come. And then the Clans came, and all of a sudden, [[ArchEnemy Arch Enemies]] were forming alliances to stop the threat. A few decades later, the [[ChurchMilitant Word of Blake]] started nuking everyone. So the Successor States ended up forming an alliance with ''the Clans'' to nuke the Blakists back.
* Heroes in ''TabletopGame/BeastThePrimordial'' will happily team up with every other race in the TabletopGame/NewWorldOfDarkness for the sake of hunting down and killing Beasts. This is intended to show just why they are {{Designated Hero}}es; they are so obsessive that they will gladly ally with actually evil monsters to kill a harmless Beast, simply because they are just that fixated on killing Beasts that they regard other races as harmless.
[[/folder]]

[[folder:Theater]]
* In ''Theatre/TheTamingOfTheShrew'', several men are rivals for the hand of the fair Bianca, but her father won't let any of them marry her unless her shrewish older sister, Katarina, is married off first. Realizing that there's no point in fighting each other if they don't have a chance, the suitors decide to work together to get Katarina a husband.
* In ''Reds and Blues'', the two families of feuding Liverpool and Everton supporters (and the audience, who are likely to be similarly split) briefly join together when a Manchester United fan shows up.
[[/folder]]

[[folder:Video Games]]
* ''VideoGame/DeusExHumanRevolution'' has an interesting one in the background. The matter of human augmentation is a topic that both liberals and conservatives can join in on. Liberals are against it because it widens the gap between the poor and the rich, whereas conservatives believe it is an affront to God to alter the human body.
* In ''[[{{VideoGame/Battlezone1998}} Battlezone]]'', the Americans and (remnants of) the Soviets team up to take down the Furies (alien spaceships brought back by the Soviets). In fact there is even a rescue mission before the team-up mission, in which you have to rescue the Soviet survivors (the Furies rebelled after taking down the Black Dogs (third faction and the one used to create the Furies in the first place)).
* In ''VideoGame/FinalFantasyX2'', the Leblanc Syndicate, who are enemies originally, become allies of the Gullwings in Chapter 3. This is different, however, in that they remain allies for the rest of the game, even helping in the fight against [[spoiler:Vegnagun]].
* In ''VideoGame/CityOfHeroes'', in the Valentine's Day 2006 and 2007 events, the missions to unlock special prizes required mixed hero-villain teams to complete. As well, the issue 10 update included a whole hero-villain co-op zone, the Rikti War Zone.
** Issue 12 added Cimerora, another co-op zone.
*** Finally, the annual "Rescue Baby New Year" event allows heroes and villains to team up, explicitly because the kidnapping of said baby/personification of time would be [[TheEndOfTheWorldAsWeKnowIt really really bad]] for all concerned.
* Happens quite often in ''VideoGame/MetalSlug''. Twice, the Rebellion teams up with you to fight the Mars People: in ''Metal Slug 2'' when the Mars People betray them and kidnap their leader, and again in ''Metal Slug 3'' when their leader turns out to be a Martian impostor. Even the ultimate recurring rival and badass Sgt. Allen O'Neill fights on your side. In ''Metal Slug 6'', both groups team up with you to fight a group of Martian-eating aliens. And in ''Metal Slug 7'', the Mars People once again rescue General Morden when he's in danger.
* In the ''{{Franchise/Super Mario|Bros}}'' {{R|olePlayingGame}}PGs (such as, well, ''VideoGame/SuperMarioRPG''), Bowser will often team up with Mario against other villains, wanting to be the only villain around. He's particularly enraged when other villains inevitably kidnap Princess Peach in the course of their plans. Or when someone has the nerve to kick him out of his own castle, like Smithy does, he's not going to let old rivalries keep him from getting it back.
** In ''[[VideoGame/MarioAndLuigiBowsersInsideStory Mario & Luigi: Bowser's Inside Story]]'', he does this completely ''unknowingly''. He doesn't know that [[FantasticVoyagePlot the Bros are in his gut]]. All he knows is that Fawful has ''his'' castle, and is trying to kidnap ''his'' princess and take over ''his'' Mushroom Kingdom. Mario and Luigi do their part behind the scenes, even during the {{Final B|oss}}attle.
** In contrast with how he deals with new villains in other Mario role-playing games, ''VideoGame/MarioAndLuigiDreamTeam'' has Bowser knowingly (as in, no brainwashing or accidental assistance) team up with the BigBad ''against'' Mario, even though Antasma has commandeered his role as the Peach-kidnapper, after the new villain tells him WeCanRuleTogether. [[spoiler:Turns out Bowser was exploiting Antasma's extra help the whole time; he later throws Antasma under the bus to be dispatched by the Mario Bros. while he takes the Dream Stone for himself.]]
* ''Franchise/{{Halo}}'' does this ''twice''. First, at the end of the second game, the humans of the UNSC and the Covenant Elites, who were previously mortal enemies, join forces to fight the Prophet of Truth, who betrayed the latter and was responsible for ordering the extermination of the former. In the third game, right before confronting Truth himself, the Master Chief and the Arbiter join forces with [[spoiler:the Flood]] to stop Truth from killing ''everyone'' in the galaxy.
** Granted, this latter alliance lasts only five minutes, but no one was really expecting [[spoiler:the [[EldritchAbomination Gravemind]]]] to help you any more than it has to. Although it did at least have the minimal grace to wait until Truth was dead first.
** The full extent of the human/Elite alliance is explored in the ending of ''VideoGame/{{Halo 3}}'' and a number of works released afterwards. [[spoiler:Admiral Hood tells the Arbiter that he can never forgive the Elites for what they did as part of the Covenant, but thanks him for standing by the Chief to the end.]] They're not really enemies anymore, but their alliance is still tenuous and not very "buddy-buddy" at all.
*** In fact, certain factions of both sides are ''still'' enemies; a number of Elites still believe that humanity needs to be wiped out, and the UNSC's Office of Navel Intelligence (ONI) is actively attempting to foment civil war among the Elites. Since the Elites' current leader, the Arbiter, is actually quite human-friendly, this ironically leads to a temporary Enemy Mine situation between the anti-human Elites and ONI.
*** On the other hand, a number of other Elites, particularly among the young, grudgingly respect humans, despite the latter's physical inferiority, for their ability to hold out for 25+ years against a technologically and numerically far superior enemy. It helps that the Elites are a bunch of {{Proud Warrior Race Guy}}s who respect honorable and skilled fighters regardless of whatever side they fight for; in fact, a number of them were puzzled that the Prophets never offered humanity a chance to join the Covenant, which is their normal M.O. If nothing else, they'd be an improvement over the [[CannonFodder Grunts]].
*** Further post-''Halo 3'' media, however, has shown that the UNSC and the Arbiter's human-friendly Elite faction, the Swords of Sanghelios, have gradually improved their relationship over the years through joint research ventures and military exercises, to the point where they've even established a number of Joint Occupation Zones.
* In ''VideoGame/DevilMayCry 3'', hero Dante teams up with his brother and enemy Vergil to fight the penultimate boss. It's barely cold when Vergil challenges Dante for ownership of the [[InfinityPlusOneSword Force Edge]].
* ''VideoGame/StarCraft'' is full of those, especially in the ExpansionPack. It starts with Raynor being forced to team up with the Sons of Korhal to evacuate his {{Doomed Home|town}}planet and ends up with a three-way alliance between the Terrans, Protoss, ''and'' Zerg against the Earth Directorate and immature Overmind they were trying to control.
** In ''VideoGame/StarCraftII: Wings of Liberty'', [[spoiler:during the final arc, Raynor join forces with the [[TheEmpire Terran dominion]], or at least some Dominion forces led by Prince Valerian, who explicitly does not have his father's approval, against Kerrigan. This time, it works.]]
* ''VideoGame/{{Warcraft}}'', borrowing some plot elements from ''StarCraft'', also has quite a few such moments, the ultimate being the battle at Mt. Hyjal where the Alliance, the Horde, and the previously hostile-to-both night elves put their differences aside to stop the demons. Only to have the Alliance (now including the night elves) and the Horde break apart in about 4 years in time for the next game in the setting, ''VideoGame/WorldOfWarcraft''.
** Which got its own moments of temporary alliances, such as the War of the Shifting Sands, and the Opening of the Dark Portal (where the Horde and Alliance came to the aid of a neutral faction holding back demonic forces coming through the portal).
** In ''Burning Crusade'', there are Aldor and Scryers factions in Shattrath City which are rivals of each other on the borders of open hostilities. Players have to pick between them and befriending one means you are hostile to the other. However, near the conclusion of Burning Crusade during the Sunwell event, they finally put aside their differences and band together to form the Shattered Sun Offensive against Kael'thas Sunstrider and Kil'jaeden.
** Another was added in ''Wrath of the Lich King'', though it borders on BigDamnHeroes. The Alliance and the Horde work together at the Wrathgate in fighting the Scourge, which stands in contrast to them murdering each other for resources and fun everywhere else.
** In fact, a massive part of ''Wrath'' is how the Horde and Alliance start with this and end trying to kill each other and letting the Lich King off to the side to kill them both. In ''Cataclysm'', Deathwing has become a greater threat than the Scourge was because the Alliance and Horde have lost all pretense of working together on anything.
** In "Rise of the Zandalari", Vol'jin, leader of the Horde's Darkspear Trolls, is so concerned about the Zandalar's SuddenSequelHeelSyndrome that he sends emissaries to both the Horde and the Alliance. Instead of trying to get Warchief Hellscream and King Wrynn to work together, he reaches out to the individual heroes, and the smaller groups within the Horde and Alliance that are directly in the trolls' path.
** The opening cinematic of ''Mists of Pandaria'' has a shipwrecked orc and human trying to kill each other, then teaming up against a lone Pandaren who interrupts their fight. Doesn't keep them from getting their clocks cleaned.
** ''Mists of Pandaria'' has the Klaxxi, a group of Mantid elders who seek outside help when the Sha corrupt their current empress; however, they have no intention of stopping the [[BugWar millenia-long war]] with the rest of Pandaria, and worship the [[EldritchAbomination Old God]] Y'Shaarj. If Y'Shaarj should ever return, they would serve him again, and if the players were smart [[JoinOrDie they would too]]. [[spoiler:When Garrosh released the heart of Y'Shaarj, the Klaxxi [[NeutralNoLonger allied with him in order to serve their god]]]].
** Garrosh managed to temporarily unite the majority of the Horde and the Alliance against him due to his actions, beginning with the Darkspear Rebellion and ending with the Siege of Orgrimmar.
** The Horde and Alliance's relationship can be largely described as "Fight together to take on a new threat to the world, then go right back to killing each other the moment we get some breathing room."
* Occurs in ''[[VideoGame/MightAndMagic Might and Magic VII]]'', with reformed MagnificentBastard Archibald Ironfist assisting the party in rescuing his brother King Roland and taking on the Kreegans.
** The climax of the [[VideoGame/HeroesOfMightAndMagic Restoration Wars]] featured a team-up between Catherine Ironfist and a faction of Necromancers that had gotten tired of Catherine's father's rule (events earlier in the story had led to his reanimation at the Necromancers' hands, only for him to promptly off their king and take control himself).
** ''Might and Magic VIII'' plays with it: on the one hand, the BigBad gives you as much help as he ''can'' give. On the other hand, the only reason he is your enemy is because of a safety protocol intended to keep him from being subverted by the Kreegans (he cannot stop once he has started the destruction of a world), so him trying to sidestep it as much as is possible is only to be expected.
* With the ''VideoGame/StarFox'' team mostly disbanded at the beginning of ''Star Fox Command'' and Fox unable (or unwilling) to get his friends back together, one of the paths you can take has Fox hiring long time rival Wolf O'Donnel to help him defeat the BigBad.
** And going back to ''VideoGame/StarFoxAssault'', Wolf helps Fox rid the menace of the Aparoids in the last four missions.
* Plenty in ''VideoGame/SuperSmashBros Brawl'':
** Marth and Meta Kight fighting, then [[spoiler:suddenly teaming up to defeat the Primids around them]]. [[spoiler:This happens again when Meta Knight fights Lucario, then, immediately after the fierce battle that manages to turn one of them into a trophy, they team up to board the Halberd. This almost happens again when they find Solid Snake, but Lucario stops Meta Knight. Meta Knight has an interesting way to make new friends...]]
** Ancient Minister [[spoiler:aka a R.O.B. unit]] helping [[spoiler:Donkey Kong, Diddy Kong, Captain Falcon, Pikachu, Samus, and Captain Olimar]].
** King Dedede (by Ness and Luigi), Bowser (by King Dedede, who pointed out that there's a bigger enemy, [[spoiler:Tabuu]]), Ganondorf (by Link and Zelda), and Wario (who kicks King Dedede, which King Dedede, Luigi, and Ness respond to by pointing out [[spoiler:Tabuu]] to Wario, who looks uninterested. When they decide to move on without him, he races past on his bike and beats them to the BigBad's final dungeon).
** You can cause this for Samus if you attack Ridley enough in [=SSB4=].
* A comedic example is shown in ''VideoGame/CommandAndConquerRedAlert3'' where the three factions (represented by their respective tanks) call a truce in the tutorial in order to teach the player not to send their units to their meaningless deaths, though are still prone to firing at each other. Usually at [[ButtMonkey the Soviet Hammer tank]].
** A more serious example is also to be found in the Allied campaign when the Empire of the Rising Sun attacks -- the Allies and Soviets call a ceasefire to destroy the Empire, and proceed to betray each other at about the same time.
** This also occurs in the ''Tiberium'' series. In the expansion pack ''Tiberian Sun: Firestorm'', the remnants of Nod and GDI have to work together to stop the renegade Nod AI, CABAL. In ''Tiberium Wars'', Nod general Kilian Qatar allies with GDI to face off against the Scrin, until Kane reveals himself to be not quite dead, flips out, and orders GDI nuked.
** Happens in the ''Yuri's Revenge'' expansion to ''VideoGame/CommandAndConquerRedAlert2'' as well, when the Soviets and Allies team up to fight Yuri.
* This occurs in ''VideoGame/KingdomHeartsII'' when [[spoiler:Maleficent]] teams up with Sora against Organization XIII.
** Interestingly, you never really see [[spoiler:Maleficent]] and Pete ''helping'', just getting ready in a BolivianArmyEnding kind of way. Sora mentions that they've found something worth fighting for, and then ''we never see them again''. Things are back to normal as of [[VideoGame/KingdomHeartsCoded Coded]] though.
** And also briefly when Axel fights alongside Sora to defeat a load of Nobodies. Since Roxas was lost, he became more of a WildCard character, and from there was slowly molded into a SixthRanger. And it's sealed when [[spoiler:he performs a HeroicSacrifice by taking out an army of [[RedshirtArmy Dusks]] with a DangerousForbiddenTechnique, then uses the last of his power]] to open the gate to [[SupervillainLair The World That Never Was.]]
* ''VideoGame/SuperRobotWarsDestiny'' is an interesting example. While the game includes antagonists from ''[[Anime/MobileSuitGundamZZ Gundam ZZ]]'', ''[[Anime/MobileSuitGundamCharsCounterattack Char's Counterattack]]'', and ''[[Anime/MobileSuitGundamWing Gundam Wing]]'', the situation at hand causes them to have the competence to ally with you all at the start since things are bad enough. Due to the [[Anime/MobileSuitVictoryGundam Zanscare Empire]] attacking Earth, along with the [[Manga/GetterRobo Invaders]], and the [[Anime/{{Macross7}} Protodevlin]], and the united alien forces of the villains from ''[[Anime/MiraiRoboDaltanious Daltanius]]'', ''Anime/{{Godmars}}'', and ''[[Anime/UFORoboGrendizer Grendizer]]'', your heroes quickly realize the only organizations out there that still have the sheer manpower to defend humanity are the Principality of Zeon and the Order of the Zodiac. [[Anime/TheBigO Roger Smith]] takes care of the negotiations. This results in the first ''heroic'' roles for longstanding villains like [[LadyOfWar Haman Karn]] and Treize Kushinada.
** ''VideoGame/SuperRobotWars'' likes to play with this in smaller ways as well. For instance, ''VideoGame/SuperRobotWarsW'' has a stage where [[Anime/TekkamanBlade Tekkaman Evil]] is forced to (briefly) work with the heroes because of the takeover of Tokyo by the [[Anime/GaoGaiGar Zonder]]. On the Selena route of ''VideoGame/SuperRobotWarsAlpha 3'', not only does Selena herself spend some time assisting the [[Anime/MobileSuitGundamSEED Cruscet team]], Andrew Waltfeld and his adjutant Martin Dacosta assist the Alpha Numbers in holding off an attack by the [[Anime/{{Macross7}} Barota]] in a later stage.
*** One OG example is when Sanger and Elzam storm the Tesla Liecht Institute to retrieve the Dynamic General Guardians being kept there from the Inspectors. When Sanger's Grungust Type-3 gets damaged, the Inspector Vigagi is about to land a fatal blow when Wodan Ymir appears and intervenes, claiming that he is the [[TheOnlyOneAllowedToDefeatYou only one allowed to kill Sanger]]. Wodan buys enough time for Sanger to activate the Dygenguard, and goes so far as to be the one who helps Sanger retrieve his Type-3 Zankantou (a job that was given to Elzam in Alpha 2) to continue fighting when Dygenguard's original weapons malfunction.
*** In the final episode of ''The Inspector'' anime, [[TheHero Kyosuke]] and [[TheRival Axel]] end up working together to take down the BigBad.
*** ''VideoGame/SuperRobotWarsEX'' is an interesting case because some of the characters you can recruit ARE enemies in their respective series that are cooperating because they are stuck in La Gias with no way back. Shu's route is unique because the only ''heroes'' you actually can recruit (on that route) are the [=GoShogun=] team and [[Anime/MobileSuitZetaGundam Quattro]]. The rest are all villains like [[Anime/AuraBattlerDunbine Todd Guiness]] and [[Anime/MobileSuitZetaGundam Jerid Messa]].
** Some of the secret recruitable characters in these games are often enemy characters, such as [[Anime/MobileSuitGundamThe08thMSTeam Norris Packard]], [[Anime/TurnAGundam Gym Ghingaham]], [[Anime/BrainPowerd Jonathan Glenn and Quincy Issa]], and [[Anime/GunXSword Michael Garret and Fasalina]], just to name a few.
** Jin, who may not like UX, decides to join forces in Scenario 45 of ''VideoGame/SuperRobotWarsUX'' to help fight the machina.
* This happens ''three'' times with {{Stripperiffic}} Pokémon Pincher admin Blue Eyes in the third ''VideoGame/PokemonRanger'' game. Two of these times, you even get to [[SaveTheVillain save her life.]] [[spoiler:After the second time, Blue Eyes pulls an official HeelFaceTurn.]]
* Pyron is the BigBad of the first two ''VideoGame/{{Darkstalkers}}'' games, despite many of the other characters being less than savory themselves.
* If ''VideoGame/KidDracula'' and ''VideoGame/CastlevaniaJudgment'' are any indication, Galamoth's presence is all it takes for Dracula and his minions to become {{Anti Hero}}es.
* ''VideoGame/SpiderManFriendOrFoe'' has the entire premise of its story built around this trope. The story involves several prominent members of Spider-Man's RoguesGallery being mind controlled by another villain. Spider-Man subsequently confronts the mind controlled villains and frees them from the mind control, at which point they readily agree to join forces with Spider-Man to find, and exact their revenge upon, the one who was mind-controlling them.
* In ''VideoGame/SpiderManWebOfShadows'', Spider-Man decides to break the evil mad scientist known as the Tinkerer out of Ryker's Island to get him to build a device capable of decimating Venom's symbiote army... if only because ReedRichardsIsUseless by being absent when he tried to phone him, [[Comicbook/IronMan Tony Stark]] and [[Comicbook/{{X-Men}} Hank McCoy]] are also absent, and he doesn't feel like dealing with Hank Pym. The mission where you do so also involves another Enemy Mine --- namely, freeing the Rhino and '''riding him''' to break through the island prison's walls. Some time later, when the Tinkerer requests that he be transferred over to the Kingpin's facilities to complete the device, Spidey and SHIELD end up forming one with the crime boss as well.
** Notable in that Spider-Man fully acknowledges that breaking out the Tinkerer is a bad idea, and he doesn't like it (unless you're playing the evil path), but that the threat of the symbiote army is so great that he really can't wait for anyone else to show up and help him solve the problem. This and other questionable actions get him in a ''lot'' of trouble when {{Wolverine}} shows up and [[WhatTheHellHero calls him out]].
** There's also the possibility for a ''third'', very temporary Enemy Mine. In order to ''get'' to Ryker's, you have to make one of the "good or bad" choices that are sprinkled throughout the game. Choosing the bad option has you get a ride there from the Vulture. (In case you're wondering, the good option is a ride from ComicBook/MoonKnight.)
*** In the DS version, you can also choose the ''Dark'' path by helping the Green Goblin.
* The plot of the ''WesternAnimation/KimPossible'' LicensedGame "What's the Switch?", featuring a reluctant team-up by Shego and Kim.
* ''VideoGame/ManaKhemiaAlchemistsOfAlRevis'': Hilariously played with; the TrueCompanions go into the depths of a monster-infested dungeon, trying to find the cure for an ailing friend, and found themselves mobbed by monsters. Then comes the game's GoldfishPoopGang (doubtful of the status as ''real'' enemies). They think they're going to cause trouble again, only to find that the latter group, under orders, is there to help them. Made even funnier by the following dialogs. During their arrival:
-->"Not now..."\\
"We don't have time to play with you!"
::The second dialogue is that after they reveal their plans, and persuade the heroes to make their escape with the medicine:
-->'''Renee:''' ...Umm, maybe you shoulda been honest and let them help.\\
'''Tony:''' Don't be stupid! Coming to their rescue to ask for help? That's just uncool.
* In ''VideoGame/TheWorldEndsWithYou'', at one point, Neku and his partner see two JerkAss Reapers getting attacked by Taboo Noise. At this point, you have the choice of helping the Reapers or letting them fight it off on their own. Hilariously, if you choose to help, Neku justifies it by saying it'll really annoy them, since Reapers are supposed to be killing Players, not being helped by them, and if you choose to leave them to their fate, Neku justifies by saying, "''Just for you, Jerk face!''"
* In ''VideoGame/SonicAdventure2'', Franchise/SonicTheHedgehog teamed up with [[BigBad Dr. Eggman]] and the rest of the Dark Story characters to stop the Space Colony ARK's automated "apocalypse" function, which is mainly [[ColonyDrop the station de-orbiting to crash into the planet, presumably blowing up both if it had hit.]]
** Sonic and Eggman teamed up again in ''[[VideoGame/SonicAdvanceTrilogy Sonic Advance 3]]'' to stop the [[OneWingedAngel out-of-control, Chaos Emerald-enhanced]] Gemerl from destroying the world.
** Subverted in the DS version of ''VideoGame/MarioAndSonicAtTheOlympicGames''. When Toad mistakes Omega as one of Eggman's loyal robots, Omega states that Dr. Eggman is in fact his enemy. Toad questions Omega on his blockade using this trope's logic, only for Omega to simply respond with "Unverified" and restate his threat to the team. As you can guess, he does not end up assisting the team, instead preferring to take on Eggman himself. [[LampshadeHanging It comes as a surprise to Toad.]]
** In ''VideoGame/SonicLostWorld'', Sonic causes Eggman to lose control of the Deadly Six, who immediately turn on the doctor. This proves out to have been a bad move on Sonic's part, as the Six immediately start misusing Eggman's energy-sucking machine to suck out all life from Sonic's world. Eggman, wanting to ''conquer'' the world and not ''destroy'' it, teams up with Sonic until the Six are put out of commission. [[spoiler:However, he fakes his death just before the job is finished, and tries to kill Sonic the instant the last of the Six are defeated, arbitrarily becoming the final boss despite not being the primary antagonist for the majority of the story.]]
* In the intro to ''VideoGame/MortalKombatDeception,'' Raiden, Shang Tsung, and Quan Chi attempt to fight that game's BigBad, the Dragon King Onaga. Unfortunately, when Raiden realizes that they aren't doing any damage... [[spoiler:he causes an explosion that appears to kill himself and the sorcerers while obliterating the palace they were in. And Onaga was unscathed.]]
** Additionally, this occurs in both sides of the story mode for ''VideoGame/MortalKombatVsDCUniverse''.
* In ''VideoGame/TalesOfSymphonia'', Lloyd's group joins up with Sheena, their [[HitmanwithaHeart enemy]], in order to save a village from [[NebulousEvilOrganisation the]] [[ANaziByAnyOtherName Desians]].
** [[spoiler:Kratos after his betrayal, when you invade Forcystus' human ranch]]
* ''VideoGame/XMenLegends II'' had the ComicBook/XMen and their old enemies, the Brotherhood, teaming up to fight the forces of Apocalypse, who had abducted members of both teams.
** Some are happier about it than others. ComicBook/ScarletWitch and Toad get along great with the X-Men and become quite friendly, while Magneto simply tolerates them, and Sabretooth and Juggernaut are constantly taking verbal potshots at the X-Men all game.
*** The original game also has a brief moment of this. [[spoiler:The first time Magneto confronts the X-Men, the entire mansion gets attacked by an army of sentinels, causing the X-Men and Magneto's forces to fight alongside each other against the mutant-hunting robots.]]
** As for its successor series, ''VideoGame/MarvelUltimateAlliance 2'' does it as well: this is how the game segues from an adaptation of the ''Comicbook/CivilWar'' to Vicarious Visions' original storyline, as the Negative Zone brawl is interrupted by [[spoiler:SHIELD's nanites gaining sentience and beginning an AssimilationPlot]], forcing the pro- and anti-registration heroes to put their political squabble aside. And it kinda does not snapback, for when is all said and done, the Civil War is settled peacefully, [[MultipleEndings the winning side being the one you chose at the beginning of it]].
* In ''VideoGame/{{Bayonetta2}}'', [[spoiler:there's a ''villainous'' example! The Jetfighter Assault level has angels and demons cooperating to gang up on the heroine and Balder to stop them from reaching Fimbulventr.]]
* The Turks, {{Punchclock Villain}}s from ''VideoGame/FinalFantasyVII'', find themselves briefly fighting alongside the heroes in an effort to save kidnapped Optional Members of both teams.
** The Turks attempt to help in ''Anime/FinalFantasyVIIAdventChildren''... '''[[TheWorfEffect attempt]]''' being the main word here. Lucky they've got [[TheChessmaster Rufus Shinra]].
* In ''VideoGame/ThiefTheDarkProject'', there's actually a mission named ''Strange Bedfellows'', in which [[spoiler:the main character agrees to help the KnightTemplar Hammerite faction in exchange for their help against the Pagan BigBad]]. In ''VideoGame/ThiefIITheMetalAge'', [[spoiler:the main character teams up with the survivors of the Pagans against a Hammerite splinter group]]. In ''VideoGame/ThiefDeadlyShadows'', it's possible to ally with ''both'' the Pagans and Hammerites if you get your reputation with both groups high enough. [[spoiler:They'll even help you out in the insane Finale after the BigBad declares war on the city. Granted, they (and everyone else in the city) will fight the Big Bad's creatures even if you didn't ally with them earlier, but unless you ally with them, they'll also attack you as well.]]
* ''Franchise/FireEmblem'' uses this and does ''not'' SnapBack. The phrase is even used to describe Marth in ''VideoGame/SuperSmashBros. Brawl''.
** A mission in ''VideoGame/FireEmblemAwakening'' has your group picking a side between two rival mercenary factions. If you refuse to pick a side, they both gang up on you.
* In ''VisualNovel/PhoenixWrightAceAttorney'', [[spoiler:the fifth case practically loses the prosecution as both Phoenix and Edgeworth fight to reveal the true killer, Damon Gant]].
** And prior to that in 1-3, [[spoiler:the first time Edgeworth was trying to cooperate leads to the simultaneously awkward and brilliant "[[ThatWasObjectionable I was hoping to come up with a question while I was objecting, Your Honor...I didn't.]]"]]
** Then in ''Justice For All'', a similar arrangement is made where [[spoiler:both Phoenix and Edgeworth attempt to prolong the trial as long as possible in order so the police might discover where the kidnapped Maya has been brought.]]
** In ''Trials and Tribulations'', [[spoiler:Edgeworth]] actually takes over the defense for the case since Phoenix [[spoiler:was stupid enough to run across a burning bridge a hundred feet over a freezing river and is incapacitated.]] To make it even more interesting, he [[spoiler:gets Franziska to serve as the prosecution, as she's the only one who wouldn't point out to the (new) judge that Edgeworth is actually a prosecutor and not a defense attorney.]]
* Halfway through ''[[VideoGame/NintendoWars Advance Wars: Days of Ruin]]'' (after [[spoiler:Captain Brenner is killed]]), Tasha, Gage, and the surviving Lazurians [[strike:temporarily]] set aside their differences with Will and the 12th Battalion to help him stop Admiral Greyfield's New Rubinelle Army from launching missile strikes against them.
* ''[[VideoGame/NicktoonsUnite Nicktoons: Globs of Doom]]'' has WesternAnimation/{{SpongeBob|SquarePants}}, WesternAnimation/DannyPhantom, [[WesternAnimation/TheAdventuresOfJimmyNeutronBoyGenius Jimmy Neutron]], and {{VideoGame/Tak|AndThePowerOfJuju}} joining forces with [[LegionOfDoom an evil syndicate]] (hired by Jimmy), [[WesternAnimation/InvaderZim Zim and Dib]] to defeat an invasion of cyclops slimes from outer space. At the same time, Zim (a VillainProtagonist and [[TheOnlyOneAllowedToDefeatYou seeing only himself as worthy of conquering Earth]]) abuses the situation to his advantage by lying his way to the heroes' side, leaving Dib stuck with the villains, much to his dismay. Even after ''they'' SnapBack, as he's still complaining [[ButtMonkey but to no avail]].
* At the end of ''VideoGame/{{Bomberman}} 64'', halfway through the final battle against [[spoiler:Sirius]] -- the MagnificentBastard who used the hero throughout most of the game -- [[spoiler:Regulus]], who was presumed dead earlier, appears and saves Bomberman's life at the last second. After some dialogue, [[spoiler:Regulus]] forms a temporary alliance with Bomberman to take down [[spoiler:Sirius]]. He even helps Bomberman escape the collapsing fortress before reminding him that they aren't friends and they will fight again.
* Shirou and [[spoiler:Kotomine]] in Heavens Feel route of ''VisualNovel/FateStayNight''. They're both very clear on the fact that they're doing it for entirely different reasons and that after cooperating, they're enemies again. Still, it leads Shirou to realize that he actually ''likes'' [[spoiler:Kotomine]] and that's why he avoids him. They're not actually that different apart from the whole, you know, evil [[ForTheEvulz for the fun of it]] factor.
** And in ''Unlimited Blade Works'', [[spoiler:Lancer]] joins forces with Shirou and Rin against [[spoiler:Caster and Archer]] on the orders of his master, [[spoiler:which would be Kotomine again]]. He even sticks around to [[spoiler:save Rin from Archer]] just because he feels like it afterwards, despite technically being their enemy.
** The entire mechanics of the Holy Grail War encourage/force the Masters to get into such scenarios, since with seven factions battling each other, there will always be somebody trying to score a kill while two others are fighting or an enemy one can't beat alone. Technically, Shirou's and Rin's alliance started out this way, but they never got to duke it out in the end.
** In ''LightNovel/FateZero'', there also was such a scenario against Servant Caster. This servant and his Master, Ryuunosuke Uryuu, were brutal {{Serial Killer}}s and their favorite prey was [[HarmfulToMinors children]], so the whole Grail War was temporarily put on hold ''solely'' to get them taken down. '''That's how bad the situation was'''. [[spoiler:Ultimately, Ryuunosuke is sniped down by Kiritsugu, and after this, Caster and a monster he had summoned are defeated by Saber, but only with the assistance of Rider and Lancer.]]
* In one of the path branches in ''VideoGame/DevilSurvivor'', [[spoiler:Midori]] teams up with [[spoiler:Kaido]] to keep [[spoiler:Keisuke]] from pulling a KarmaHoudini and getting away with his KnightTemplar stint without a fight. She does so hoping she can restrain [[spoiler:Kaido]] from ''killing'' him, but wonders about her ability to do so a ''tad'' too late.
* The freeware game ''VideoGame/{{Sonny}}'' has the titular character and [[CombatMedic Veradux]] team up with Galiant, an elite soldier of Zombie Pest Control Inc., by pretending they're also ZPCI soldiers, to fight the super-powerful zombie Baron Brixius. Once that's done, however, Sonny and Veradux decide to take Galiant out before he finds out they're actually zombies too, and he thus becomes the game's FinalBoss.
* ''VideoGame/BatenKaitos'' has [[spoiler:Aimee and Folon]] helping the main party to infiltrate the ''TheVeryDefinitelyFinalDungeon'' despite having fought the group multiple times over the course of the game.
* ''VideoGame/CallOfDuty: VideoGame/ModernWarfare 2'' has the appropriately named level "The Enemy of My Enemy":
-->'''Captain Price:''' [[spoiler:Makarov]], you ever heard the old saying "the enemy of my enemy is my friend"?\\
* '''[[spoiler:Vladimir Makarov]]:''' Price, one day you're going to find that cuts both ways.
* Granted, all [[spoiler:Makarov]] did was [[spoiler:give Price the location of General Shepherd's hideout]] and you still need to kill both his and [[spoiler:Shepherd's]] men.
* In ''VideoGame/TheGodfather: The Game'', in the cutscene of [[spoiler:Sonny's death]], you can clearly see mobsters from the Tattaglia, Stracci, and Cuneo families working together against the victim.
* ''VideoGame/OverlordII'' has the EvilOverlord offered an alliance by the BigGood Queen Fay, ruler of Light Magic, to take down the [[FantasticRacism magic-destroying]] [[TheEmpire Glorious Empire]]. She helps by reconstructing the [[ArtifactOfDoom Tower Heart]] of the first game and sacrifices her temples to power it up. When that proves to be insufficient, [[spoiler:she decides that she'll have to sacrifice her own magical energy and allows the Overlord to drain her. However, due to his evil influence seeping through her body, she is eventually driven insane, becoming the FallenHero Dark Fay who joins the Overlord as his mistress.]]
** Ssssssort of. Queen Fay [[spoiler:turns into Dark Fay from being exposed to too much of your Evil Presence spell (Force Lightning and a Jedi Mind Trick in one.) This leads to Corruption... Unless you decide to "overcharge" her and explode her, for Destruction points. She still joins you, only this time she's a spirit. The real kicker? Dark Fay is more explicitly evil and violent, while Ghost Fay is more [[CloudCuckoolander innocent and aloof]]. Corruption gets you a WoobieDestroyerOfWorlds, Destruction gets you an artistic, aethereal sidekick.]]
* In ''VideoGame/ChronoTrigger'', you can choose to add Magus to your team.
* ''VideoGame/CrashTwinsanity'' makes this into a game feature by making Dr. Cortex a total ButtMonkey. Crash and Cortex being forced to work together usually means whacking enemies with Cortex, tossing Cortex over a gap for him to do something, clearing his path while he runs in a screaming panic, using him as a snowboard, or controlling the two as a BigBallOfViolence when Cortex decides to beat up Crash.
* ''VideoGame/StarOceanTillTheEndOfTime'' lets you choose whether to add Albel Nox to your party. Or is it a HeelFaceTurn on Albel's part? Hm.
** You really have no choice, as he's forced to join your group temporarily anyway as part of a larger enemy mine situation with the two warring kingdoms vs the invading aliens. Afterwards, the war is resolved peacefully. The only optional part is whether you choose to have Albel join you for the rest of the game, or send him back to the army that loaned him to you.
** He only turns up to join permanently if you go through a private action with him earlier and tell him you're not his enemy. He genuinely doesn't want to be your enemy, regardless of common threats.
* ''VideoGame/MassEffect2'' has Commander Shepard brought back to life by [[WellIntentionedExtremist The Illusive Man]], who may have been responsible for killing his/her squad in the Sole Survivor backstory, in order to combat the {{mechanical|Lifeforms}} {{Eldritch Abomination}}s out to destroy humanity (and all galactic civilization, but Mr. Illusive doesn't really care about them), even willing to recruit notably {{Badass}} aliens. Particularly relevant if Shepard is played as Paragon, who does not hesitate to tell TIM that he/she's barely tolerant of his organization only because [[TheCassandra no one else will help him/her]] and in the end [[spoiler:can deny him the Collector Base and technology to "secure human dominance"]].
** Tali also hates Cerberus with a passion and [[UndyingLoyalty she only joins the mission to help Shepard.]]
** And finally, Liara worked with Cerberus herself so they could bring Shepard back because [[UndyingLoyalty she couldn't let her friend (or more) go.]]
** The 2nd game even features a villainous example: the vigilante Archangel does such a good job of ruining the collective days of Blue Suns, Eclipse, and the Blood Pack mercenary gangs that they ''all'' team up to take him down, despite usually being at each other's throats.
** ''Franchise/MassEffect'' runs on this trope anyway. You gather a team of people from various species, and almost all of them are at least a bit prejudiced against the other races due to past events such as the First Contact War and the krogan genophage. They all end up working together to save the universe from a common threat. One of those people you can recruit is [[spoiler:Morinth, Samara's sociopathic daughter, who intended to add Shepard to her long list of DeathBySex victims.]]
** The geth and the ''Reapers'' do this in ''[[VideoGame/MassEffect3 3]]''. Having declined an alliance with the "Old Machines" once before, the geth are forced to reconsider after the quarians try to wipe them out for the second time in three centuries. Faced with creators who seemingly refuse to treat them as equals and no help from any other organics, they decide that giving up their free will is preferable to being exterminated. It takes the combined efforts of Shepard, Legion, Tali, and Zaal'Koris to get both species out of ''that'' mess intact.
** The entire ''Galaxy'' unites because of this in ''3''. Most of the various forces bitterly hate each other, but can be convinced to fight side-by-side, including the Turians and Krogans, the Quarians and the Geth, the Humans and Batarians, etc. The Rachni, once the bane of the Galaxy, also can become allied forces [[IOweYouMyLife due to their debt]] to Shepard. The GodzillaThreshold has a way of making everyone come together.
*** The batarians are especially interesting, because if you played the "Bring Down the Sky" DLC for the first game and let the BigBad escape, Balak returns in ''3'' and, due to a severe case of YouAreInCommandNow[[labelnote:more]]The Batarian Hegemony was directly on top of the Reapers' point of arrival into the galaxy, and their higher-ups were already indoctrinated due to contact with a dead Reaper they'd found.[[/labelnote]], is now the highest-ranking batarian naval officer left alive. You can kill him, or, despite him having ''a gun to the back of your head'', browbeat him into adding his forces to the war effort. Afterwards, a C-Sec officer asks if Shep wants to have him arrested.
----> '''Shepard:''' I ''want'' you to put a bullet in his head. But we're all making sacrifices today.
** [[spoiler:In the ''Leviathan DLC'', Shepard manages to broker an alliance with the race that pre-dated the Reapers. However, the [[EldritchAbomination Leviathans]] make it very clear that the only reason they are helping is because they see the Reapers as having stolen the Galaxy from ''them'' and, since they consider themselves to be [[AGodAmI God-like]], are rather pissed off that the Reapers never paid proper "''tribute''" to them.]]
** In the ''Omega DLC'', [[NobleDemon Aria T'Loak]] recruits Shepard to help her retake Omega. After her initial plan of attack fails, she's forced to enlist many of the gangs that formerly opposed her, including one led by a former lover, in order to form a rebel army capable of driving Cerberus from the station.
* This is the best way to describe the relationship between ''VideoGame/KaneAndLynch''. They consistently hate each other throughout the game since Lynch was originally a thug hired by TheSyndicate to watch Kane. HilarityEnsues as Lynch's AxCrazy nature gets the better of him...
* The Creator/CartoonNetwork MMO ''VideoGame/FusionFall'' has the heroes and enemies generally working together against [[BigBad Fuse]]. Mojo Jojo even provides the main fast-travel in the game. There are exceptions, though (a recent story arc has [[WesternAnimation/{{Ben 10}} Vilgax screwing things up for Ben]]).
* In ''VideoGame/{{Prototype}}'', [[ArmiesAreEvil Blackwatch]] works with Alex Mercer to defend the Bloodtox Pump from the Infected, and there are also side-events scattered around the city that involve fighting with the Marines or Blackwatch to beat the Infected. However, other than these few exceptions, Mercer and the Military are mortal enemies.
* Briefly in the first two ''VideoGame/{{Uncharted}}'' games.
** ''[[VideoGame/UnchartedDrakesFortune Drake's Fortune]]'' has [[spoiler:Nathan Drake and Eddy Raja versus the Spaniard zombie-thingies.]]
** Whereas in ''[[VideoGame/Uncharted2AmongThieves Among Thieves]]'', [[spoiler:the Guardians of Shambhala attack, and [[TheHero Nathan Drake]] is forced to work together with [[TheDragon Harry Flynn.]]]]
* In ''VideoGame/{{Freespace}}'', the Terran-Vasudan War comes to an abrupt halt with the appearance of the Shivans, who are trying to kill both of them. Since the Shivans are more than capable of wiping out both species, the two agree to a cease-fire to deal with the common threat. The cease-fire holds and eventually becomes the foundation for an alliance between the two species.
** In the fan-made ''VideoGame/BluePlanet'' expansion, events transpire such that both the Terran forces of the GTVA and the UEF respond to a Vasudan ship in distress. The captains of both ships agree to set aside the war for the moment to rescue the Vasudans, and the deployed fighters make small talk with their opposite numbers. [[spoiler:It all falls apart when a second UEF ship arrives and, not knowing of the cease-fire, obliterates the GTVA ship. The UEF commanders were furious, since it made them look very, very bad in front of the Vasudans, with whom they had hoped to win political favor.]]
* In ''[[VideoGame/FirstEncounterAssaultRecon F.E.A.R. 3]]'', Paxton teams up with the ex-FEAR commando Point Man.
* Snake can form this with the non-P.M.C. forces in ''VideoGame/MetalGearSolid4GunsOfThePatriots''. Normally they see you as a threat and shoot on sight, but if you take care not to return fire and only shoot Liquid's forces, they'll become friendly. They'll even go as far as to cover you and give you items.
* Raikov's recruitment in ''VideoGame/MetalGearSolidPortableOps'' was mostly due to this trope, as he seemed to hate Gene enough to even ally himself with Naked Snake mostly to get revenge on Gene for humiliating him and locking him up (in case you wonder why it is worded this way, it's because he has a lot of hate towards Naked Snake because [[spoiler:he was involved with the death of his lover, Colonel Volgin, in ''VideoGame/MetalGearSolid3SnakeEater''.]]) Roy Campbell even lampshades this by quoting the adage "The Enemy's Enemy is my Friend" during both the mission briefing and the radio call at the start of the mission.
* The whole point of the ''VideoGame/WarriorsOrochi'' games; all of the characters contained within are from either the Three Kingdoms period of China's history or the Warring States period of Japan's, and many of the characters are sworn enemies. However, a few of the Dream Mode stages in ''Warriors Orochi 2'' ''specifically'' invoke this trope by teaming up characters who normally hate each other, such as the stage where ''VideoGame/DynastyWarriors'' Guan Yu, Xiahou Dun, and Lu Meng team up to rescue Liu Chan from ''VideoGame/{{Samurai Warrior|s}}'' character Hideyoshi Toyotomi.
* In ''VideoGame/DragonAgeOrigins'', [[spoiler:after punching some sense into Loghain's thick skull and overthrowing him from the throne, you can choose to spare him from execution and instead conscript him to the Wardens as a chance at redemption. He will then join your party and help you fight the Blight at the cost of Alistair, who will be so outraged with the decision of pardoning Loghain that he will leave.]]
** Also shows up in the myriad groups you are assigned to recruit; though nowhere so much as the Dalish working alongside humans.
** Even the ''Warden'' can be played like this with the Dalish and Dwarven backgrounds, not interested in ending the Blight so much for Ferelden's sake, but to prevent it from spreading and affecting ''their'' people.
--> '''Loghain''': Pray our King is admenable to reason.
--> '''Dalish Warden / Dwarf Warden''': The Dalish have ''no'' Kings! / He's not ''my'' King!
* Can happen in ''VideoGame/DragonAgeII'', depending on your choices and who you side with in the end. No matter how you feel about the mage/templar conflict, many people will probably side with the mages just to piss [[KnightTemplar Mere]][[ObviouslyEvil dith]] off. Also, this is Fenris' opinion on fighting alongside mages, particularly Merrill, with the implication that he won't straight-up gut them because of loyalty to Hawke. The unique buff you get for a Rival Fenris is "Enemy of my Enemy".
** In the Mark of the Assassins DLC, Tallis is revealed to be working for the Qunari, who are feared by the rest of Ferelden. This quickly earns her the scorn of most party members since they're technically now working to save a group that most of them despises.
** Similarly, [[spoiler:if you choose to side with the mages in the final confrontation and coerce Fenris/Aveline into joining you, or vice versa with the Templars and Merrill/Anders. The first three are possible with Friendship or Rivalry, but it specifically takes a maxed-out rivalry meter for Anders to swap sides.]]
** Explicity stated to be the relationship between Mage!Hawke and Knight-Commander Meredith. She only lets Hawke continue to roam free because it's more useful to turn their magic against Kirkwall's enemies. That, and, she's utterly ''terrified'' of them!
* In ''[[VideoGame/{{Battlefield}} Battlefield 2: Modern Combat]]'', [[spoiler:when it is revealed that both NATO and China were misled into warring with each other by a third faction.]]
* ''VideoGame/SystemShock 2'' features the return of SHODAN, a rogue ArtificialIntelligence who was the BigBad of the original. The player joins SHODAN in a battle against a common enemy, The Many.
** When you enter [[spoiler:Polito's office]], SHODAN tells you that the reason she wants you to get rid of the Many is because they turned against her after the Hacker sabotaged her on Citadel Station. The Many grew up without her tutelage, and they decided that they hated the mechanical ways of SHODAN and wanted all of the universe to be covered in their organic ways.
* ''VideoGame/AdventureQuestWorlds'' has King Alteon and Gravelyn, Sepulchure's daughter, forming a Great Truce between Good and Evil to deal with the threat of Drakath and his forces of Chaos, including the 13 Lords of Chaos.
* In ''VideoGame/BetOnSoldier'', you spend most of the game fighting through the Bet On Soldier tournament in order to confront the [=BOS=] [[WorldsStrongestMan World Champion]], Igor Boryenka, who you believe to be responsible for the murder of your wife. Once you finally defeat Boryenka, the real BigBad punishes you both by forcing the two of you to fight together in an Arena deathmatch against wave after wave of the best fighters in the [=BOS=] League. It's actually a pretty cool level, since Boryenka retains his boss-like health and damage output, but the sheer number and skill of opponents the two of you face make it seemingly impossible for him to survive to the end.
* In ''VideoGame/FalloutNewVegas'', if you take the [=NCR=], Mr. House, or Independent path and complete sidequests pertaining to said factions, it's possible to have the [=NCR=], Brotherhood of Steel, Great Khans, and [[spoiler:Enclave Remnants]] fighting together against Caesar's Legion in the final battle for Hoover Dam. All of these groups have been mortal enemies of the NCR throughout history, with [[spoiler:the Enclave]] having been the BigBad of the previous two games, the Brotherhood of Steel being at war with [=NCR=] back west, and the Khans having tried to destroy Shady Sands (the Republic's founding settlement) ''twice'' (once prior to [=NCR=]'s founding, once after).
* Near the end of ''VideoGame/{{Crysis}} 2'', the remaining members of the [=CELL=] [=PMC=] that has spent the entire game trying to kill you end up teaming up with you against the Ceph alien invasion, because their dying boss makes it clear to them that their entire chain of command is now dead and you are now humanity's last hope for stopping the aliens.
* In ''VideoGame/{{Portal 2}}'', [[spoiler:[=GLaDOS=], or rather, [[ItMakesSenseInContext GLaDOS inside of a potato]],]] joins up with main character Chell after [=GLaDOS=] is switched out of the main core, and pulls a HeelFaceTurn some time later.
-->'''[=GLaDOS=]''': [[spoiler:"Look, even if you think we're still enemies, we're enemies with a common interest: Revenge. You like revenge, right? ''Everybody'' likes revenge. Well, LET'S GO GET SOME!"]]
* In ''VideoGame/{{Xenonauts}}'', the US and USSR work together against the alien threat.
* A fandom example has unified the BrokenBase of the [[VideoGame/SpyroTheDragon Spyro fans.]] Both groups have come together to say NOTHING good can come from ''VideoGame/{{Skylanders}}''.
* In the Sundown Kid's chapter in ''VideoGame/LiveALive'', Sundown Kid is being relentlessly pursued by the bounty hunter Mad Dog. They put their duel on hold when the town they stopped at is attacked by Odie's gang of outlaws. After working together to defeat Odie, Mad Dog will immediately try to settle things with Sundown once and for all, to the strong protests of the townspeople they just saved. Sundown can either finish off Mad Dog or spare him to fight another day.
* In the remake of ''VideoGame/TheTowerOfDruaga'' for the PCEngine, Gilgamesh, instead of killing the Succubus, must convince her to help him so he can get the Blue Crystal Rod and defeat Druaga.
* One mission in ''VideoGame/PerfectDark'' sees protagonist Joanna Dark, captured by Skedar in the mission beforehand, locked in the same cell as the head of the very organisation the game [[FromBadToWorse squares you up against]], Cassandra de Vries. [[spoiler:She willingly gives her life to allow Joanna to escape.]]
* In the ''[[VideoGame/TheElderScrollsVSkyrim Skyrim]]'' quest ''Cure For Madness'', you have to hunt down [[spoiler:Cicero]] after he apparently turns rogue and attacks [[spoiler:Astrid]]. However, you can choose to spare his life, and later he will act as a follower for you. Similarly you can play as an Imperial, High Elf, Dark Elf, etc whilst working for the Stormcloaks (who are known for the xenophobia of some members).
* ''VideoGame/{{Solatorobo}}'' has the [[PrivateMilitaryContractors Kurvasz]] [[AdventureGuild Hunters]], Howler {{Sky Pirate}}s, and a ''train conductor'' join forces to [[spoiler:procure a powerful bomb to help in the fight against Tartaros.]]
* ''VideoGame/NeverwinterNights2'' has an example that would not be allowed in a pen-and-paper game of ''TabletopGame/DungeonsAndDragons''. Namely, having [[ThePaladin Casavir]] and/or a paladin [[PlayerCharacter Knight-Captain]] work side-by-side with [[TokenEvilTeammate Bishop]] (ChaoticEvil ranger) and [[DealWithTheDevil Ammon Jerro]] (NeutralEvil warlock). Thankfully, the "Code of Conduct" paladin class feature is not present in ''[=NWN2=]'', or else the game would be {{unwinnable|By Mistake}} since Jerro is the undisputed expert on the BigBad.
* The final chapter of ''VideoGame/BaldursGateDarkAlliance 2'' has The Hero, Jherek the Harper, and Kharne the Zhentarim mercenary team up against the vampire Mordoc Selanmere.
* Mid- to late-game players of recent games in the ''[[VideoGame/{{X}} X-Universe]]'' series can befriend the {{Yak|uza}}i faction by various means. They can then make use of their NGOSuperpower status to steal ships from "Return Ship" missions, by docking the ship at the shipyard in Senator's Badlands. The SpacePolice sent to destroy the stolen ship will spawn and immediately come under attack by the Yaki, [[CurbStompBattle who have an Akuma destroyer at their disposal]].
* In ''VideoGame/KidIcarusUprising'', immediately after a MeleeATrois between Pit, [[spoiler:Viridi's Forces of Nature]], and [[spoiler:Hades's Underworld forces]], the fight is put on hold to deal with [[spoiler:an alien invasion]] out of nowhere. Though [[spoiler:Hades]] still can't resist dropping a ChestMonster in Pit's path at every opportunity, [[spoiler:Viridi]] takes to the team-up very well, and remains a tenuous ally for the rest of the game.
** Later, [[spoiler:Medusa appears during the final battle to sock Hades in the face before he can finish Pit off, having been revived by the lord of the underworld, but pledging that she would no longer be his puppet. She's killed for her trouble, but it gives Pit, Viridi, and Palutena the opportunity they need to finish Hades.]]
* ''VideoGame/AlienVsPredatorCapcom'' has two Predators helping the humans hunt down Aliens on Earth.
* ''VideoGame/TeamFortress2'' - RED and BLU are joining forces against a robotic gray team in the [[http://www.teamfortress.com/mvm/ Mann vs. Machine]] update.
** Also, this is practically mandatory any time a Halloween Boss shows up. The control point locks down and cannot be captured, whereupon the boss proceeds to try and slaughter everyone they can find for a few minutes. Neither team alone can bring any of them down. Even MONOCULUS, arguably the weakest of the three bosses, will still pound a team into giblet gravy. Both teams have to resist the urge to kill each other and work together to bring down the Halloween monstrosity if they want to go back to the more traditional task of capturing the point and killing each other.
* The penultimate mission in ''NexusTheJupiterIncident'', in which you have to fight waves of entire fleets of enemies, has the possiblity of you getting reinforcements in the face of a [[LizardFolk Gorg]] warship captained by Chief Zatuk, the Gorg ruler. Slight subversion in that Zatuk never wanted to fight humans or the Vardrag, but the Gorg society is heavily clan-based, and it's several powerful clans who wish to fight.
* ''VideoGame/HalfLife'' - HECU and Black Ops are both there to kill Freeman and fight against each other.
* In episode 303 of ''VideoGame/SamAndMaxFreelancePolice'', Sam is trying to sneak in and retrieve Max's brain from a room where General Skun-Ka'pe and Monsieur Papierwaite are busy firing guns and slinging spells at each other. Unfortunately, Max notices him...
-->'''Max:''' Sam! Get me outta here! This whole place smells like gorilla and patchouli!
-->'''Skun-Ka'pe:''' ''(turns, slowly)'' Sam? The interloper who foiled my scheme to collect the toys of power and re-imprisoned me in the Penal Zone?!
-->'''Papierwaite:''' ''(turns, slowly)'' Sam? The great-grandson of the poltroon who put the kibosh on my intricate plan to unleash Yog-Soggoth and take over the world?!
-->'''Skun-Ka'pe:''' I hate that guy.
-->'''Papierwaite:''' I ''hate'' that guy!
* In ''TabletopGame/{{Warhammer 40000}}: Rites of War'', you, playing as the Eldar, spend the first half of the campaign fighting your way through Imperial forces, including PDF and Guard forces, Sisters of Battle, and Space Marines. Just when you finally break the back of Imperial resistance on the planet, you find out that the [[HordeOfAlienLocusts Tyranids]] are attacking, and that there is a Tyranid [[ApocalypseHow hive fleet]] approaching. All of a sudden, you are teaming up with TheRemnant of Imperial forces to fight the Tyranids, meaning you can recruit Guard, Sororitas, and Space Marine units into your army. Unfortunately for the Eldar, they're still going to have to bear the brunt of the fighting, even though, in the fluff, the [[ManipulativeBastard Eldar]] would prefer to have the humans do the heavy lifting.
* Happens quite often in the ''Franchise/SlyCooper'' series:
** In [[VideoGame/Sly2BandOfThieves the second game]], Dmitri Lousteau initially helps the Coopers rescue Murray in exchange for being released from prison. Since he's not exactly that evil to begin with, he eventually pulls a full HeelFaceTurn and joins the Cooper Gang full-time.
** In [[VideoGame/Sly3HonorAMongThieves the third game]], Panda King begrudgingly joins the Cooper Gang in exchange for their help to rescue his daughter.
** In [[VideoGame/SlyCooperThievesInTime the fourth game]], you get the raging {{Tsundere}} Carmelita and her [[{{BFG}} ridiculously overpowered shock pistol]] in the gang.
* In ''VideoGame/ProjectXZone'', there are several examples, most of them being solo units.
** [[VideoGame/NamcoXCapcom Saya]] joins your team in Chapter 26 because the only reason she joined forces with Oros Phlox was because she needed their help to finish Byakuya X; after that she immediately ditches them. That and they were planning to use it for something other than it was intended for.
** [[VideoGame/StreetFighterIV Juri]] joins your team in Chapter 27 after she finds out Seth was planning to kill her and take back the Feng-Shui Engine in her eye. Chun-Li manages to convince her to fight with them because the alternative was fighing against your group.
** [[VideoGame/XenoSaga T-elos]] is the only example of a character that's part of a pair unit. She teams up with KOS-MOS in Chapter 19 after Seth was planning to kill her to take her machinery for himself. T-elos stops him because [[TheOnlyOneAllowedToDefeatYou she wants to be the one to do it]]. KOS-MOS convinces her to help the group because it's a really bad idea to fight with the Dimensional Barriers crumbling, and to have their showdown on their own world where it will stick.
* One mission of the SNES ''VideoGame/FrontMission'' had your unit protecting Sakata Industry's CEO from terrorists, and Lloyd's ArchNemesis Driscoll swings by to help you out because ''he'' needs Sakata alive as well. Needless to say, he's a complete CrutchCharacter.
* Early on in ''Videogame/MetroLastLight'', Artyom is captured by [[ThoseWackyNazis the Reich]] and sent to a prison facility, where he ends up working with Pavel, an imprisoned soldier of the [[DirtyCommunist Red Line]], to engineer an escape. Pavel and Artyom both lampshade this:
-->'''Pavel''': So...um... you're with the Spartan Order? I'm from the Red Line. Our superiors are not on the best of terms, eh? But I say fuck that- uh, fuck that! The grunts stick together, uh?
-->'''Artyom''': My escape from the Nazi prison could be entitled "The enemy of my Enemy is my friend"... I never liked communists much, but Pavel acted like a real hero.
* In ''Dracula: Love Kills'', Dracula and Van Helsing team up to stop the Vampire Queen from conquering the world.
* In the first part of ''Witches' Legacy 3: Hunter and the Hunted'', the first game's BigBad Elizabeth teams up with the main character in order to rescue the latter's adopted daughter from the [[KnightTemplar Order of Witch Hunters]], at least until Elizabeth [[spoiler:gets the main character captured, possesses the daughter, and tries to open a portal to the spirit realm]].
* Seems almost guaranteed to happen at least once per game in the ''Suikoden'' series, with quite a few instances of your enemies becoming official members (and temporary allies) of your own army. Also happens between individual army members, some examples being Ayame and Watari in III, Klaus and Kiba in II, and Nakula alongside Shigure, Sagiri, and Oboro in V.
* ''Videogame/BreathOfFireIV'' finds Ursula and Scias teaming up with your party, despite being (separately) employed by different enemies of yours (Ursula is from the Fou Empire; Scias was employed by Ludia, whose relations with the heroes are... shaky at best).
* ''VideoGame/CliveBarkersUndying'': The skeletons in the monastery aren't actually controlled by Lizbeth, according to WordOfGod. That doesn't stop them from temporarily allying with Lizbeth and her Howlers to try to kill you.
* ''VideoGame/GuildWars Eye of the North'' has a truce between the rebellious Charr and the Ebon Vanguard, ordinarily fierce enemies, in order to overthrow the current Charr leaders and stop the Destroyers.
* ''VideoGame/GuildWars2'' has the Charr and humans reluctantly putting aside over one thousand years of hatred and three centuries of near-constant warfare in order to fight against the Elder Dragons.
* The ''Videogame/{{Diablo}}'' series:
** Necromancers in ''Videogame/DiabloII'' believe in the BalanceBetweenGoodAndEvil, and are every bit as distrustful towards angels as they are towards demons. However, so long as demons hold the upper hand in the Eternal Conflict, they are content to work alongside the angels until they perceive the balance as being restored.
** In Act III of ''Videogame/DiabloIII'', your hero must assist in the defence of Bastion's Keep after it is besieged by the Demon Azmodan. If you play as a Barbarian, the quest journal will note that the Keep was first built as a means to wage war on the barbarians, but the Barbarian recognises they must fight alongside its defenders regardless.
** In ''III'''s ''Reaper of Souls'' expansion, Imperius (a LightIsNotGood {{Jerkass}} [[OurAngelsAreDifferent Angel]]) feels this way about helping the player character bring down [[FallenAngel Malthael]].
* ''VideoGame/TombRaiderIII'':
** Lara teams up with The Damned when it comes out that their goals (obtain an artefact and revenge, respectively) have the same end result: the death of [[VainSorceress Sophia Leigh]]. This comes after a whole level where the Damned are hostile to Lara.[[note]]And will become hostile again if Lara shoots at them after the deal has been struck.[[/note]]
** She later has a non-verbal team-up with the workers in the RX-Tech mines (who had attacked her before) when it becomes apparent that Dr. Willard is [[spoiler:an EvilutionaryBiologist willing to let his workers suffer horrible mutations ForScience]]. Like the above instance, they will turn hostile if attacked by Lara, and during the last level, they will once again be hostile no matter how Lara acted previously.
* Garrett from the ''Videogame/{{Thief}}'' series is forced to do this on at least two occasions; in the first game, he commissions the Hammerite priests to build him a weapon capable of bringing down the BigBad, and in the second, a nature spirit who served as TheDragon in the previous game helps him sabotage the new BigBad's mechanical weapons.
* In ''VideoGame/StarWarsTheOldRepublic'', this sort of agreement is the underlying theme of the Shadow of Revan expansion -- that, as distasteful as it might be at times, the Republic and Empire must work together against the greater threat of the eponymous Jedi/Sith/whatever he is [[spoiler:and [[OmnicidalManiac the Emperor]], who he quasi-accidentally brought back to life]]. It begins as a tentative alliance between a nosy SIS agent (read: Republic spy), a curious Sith Lord, and the player, but once the full scope of [[NGOSuperpower the Revanite conspiracy]] becomes clear, the truce goes as high as Satele Shan, Grand Master of the Jedi Order, and Darth Marr, de-facto leader of the Dark Council.
** The Knights of the Fallen Empire expansion takes this to greater lengths. The expansion starts off with Darth Marr creating a joint Republic/Imperial coalition to deal with the [[spoiler:now-awakened Sith Emperor]]. Once the player character becomes the Outlander, they are put in charge of an Alliance that has both Imperials and Republic forces working together (including Jedi and Sith) and they can strengthen their organization by recruiting former companions of the original storylines.
* In ''Videogame/DragonBallXenoverse'', villains such as Frieza, Cell, or Ginyu will show up in the hub city and become available as trainers on the basis that even they don't want the villains to destroy all of history.
* ''VideoGame/ZombieArmyTrilogy'' has American OSS agent Karl Fairburne teaming up with Boris, a grizzled Soviet soldier, and Hermann Wolfe, a captain in the Wehrmacht, to fight [[ZombieApocalypse the shambling dead]]. The UpdatedRerelease adds four female characters into the mix, including another Soviet, a French resistance fighter, and a German civilian who took up fighting the Nazis because they executed her husband and children. Hermann is the only one of the eight playable characters who is aligned with the Axis, and he remains sympathetic to audiences by being the [[PunchClockVillain "clean, dutiful, and apolitical German soldier"]] type. Also, at this point in the war, personal allegiances matter little as the conflict shifts from "Allies vs. Soviets vs. Axis" towards "Living vs. Dead".
* The [[OrphanedSeries sadly discontinued]] ''Dawn of Victory'' mod for ''VideoGame/SinsOfASolarEmpire'' was going to have an AlienInvasion taking place in 1943, and the Allies and Axis having no choice but to join forces to fight for the survival of the human race.
* ''VideoGame/GrandTheftAutoII'': The structure of respect from gangs. You could kill several members of their gang and still be respected by them, so long as you killed a significantly higher number of people from a gang they hate.
* ''VideoGame/{{Shantae}} and the Pirate's Curse'' has Shantae and her ArchEnemy Risky Boots teaming up so they could defeat the Pirate Master. In Shantae's case, it's because she has ChronicHeroSyndrome. In Risky's case, it's because [[ItsPersonal she really hates the Pirate Master]].
[[/folder]]

[[folder:Web Animation]]
* ''Machinima/RedVsBlue'', as mentioned above, in which the red and blue teams often join up to battle O'Malley, and later the Meta.
* ''WebAnimation/{{Haloid}}''. When Samus and MC first meet, Samus attacks MC for no good reason and they start a running battle. When more Covenant troops show up, Samus and MC join forces to fight them, including a BackToBackBadasses moment.
** [[JustifiedTrope Not entirely for no good reason]]. Neither Samus nor MC recognize the other as human at first, and [[PoorCommunicationKills each presumes the other to be more of the enemy]]. Once Samus is down to her Zero Suit, MC stops attacking her [[spoiler: [[HelloNurse for more than one reason]]]], and once Samus gets a good look at [[spoiler: Nicole]] through the visor, she stops attacking [[spoiler: her]] as well.
* In episode 9 of ''WebAnimation/MegaManDiesAtTheEnd'', [[spoiler: Mega Man and Dr. Wily]] have to work together to escape from the guards.
* In ''Red vs Blue 3,'' Red and Blue are about to have their epic showdown when Green comes in and beats them up. The result? Red and Blue perform a FusionDance to create Purple, who swiftly kills Green in the span of less than 10 seconds.
* More like {{Jerkass}} rather than 'evil', but Dave and Lisa from ''DSBTInsaniT'' will help out in battles with the MonsterOfTheWeek.
* In the ''VideoGames/LeagueOfLegends'' cinematic [[http://youtu.be/tEnsqpThaFg "A Twist of Fate"]] Garen and Annie fight against Katarina and Tryndamere, until the Baron Nashor shows up. Naturally, they choose to team up against the greater menace.
* ''WebAnimation/TheMostPopularGirlsInSchool'': Shay and Mackenzie, and to a lesser extent, Brittnay and Saison, do this in Season 3 to take down the BigBad, [[spoiler: Jenna Darabond.]]
[[/folder]]

[[folder:Web Comics]]
* In ''Webcomic/DrowTales'', after a long and bloody war between the Sharen and Sarghress clans, who have long considered one another to be their ArchEnemy, Sabbror [[spoiler:agrees to turn over all Sharen holdings in exchange for the Sarghress clan's help in getting revenge against the traitors that condemned the Sharen to a FateWorseThanDeath]].
** Later, Zala'ess and Quain'tana [[spoiler:make a deal to end the war since both sides will only exhaust each other if they continue. When [[HumanoidAbomination Kharla'ggen]] unleashes her power on the city to turn everyone into {{Meat Puppet}}s they also find themselves among the only people not affected and team up to survive.]]
* ''Webcomic/SchlockMercenary'' Defies this with Maxim 29 from ''The Seventy Maxims of Maximally Effective Mercenaries'': "The enemy of my enemy is my enemy's enemy. No more. No less." but the actual trope does come into play at least once. True to the maxim, both sides will invariably race to put their knife in the others' back first.
* During the "Dangerous Days" arc of ''Webcomic/SluggyFreelance'', the gang's (first) trump card against Hereti Corp is [[spoiler:Oasis, who had kidnapped or tried to kill most of them in the past. Only her devotion to Torg and mind control programming kept her somewhat on their side]].
** Also, due to his SociopathicHero nature, almost any time Bun-Bun is persuaded to help the other characters has shades of this.
* In ''Webcomic/TowerOfGod'', after a MeleeATrois between Viole, Arkraptor and Kang Horyang seemed to have no end, Arkraptor and Horyang decided to team up against Viole. [[spoiler:It didn't work]].
* In ''Webcomic/TheOrderOfTheStick'':
** Elan and Thog temporarily team up to escape from prison and travel back to the Order after Elan "fast-talk" Thog. Being both {{Cloudcuckoolander}}s, they get along surprisingly well.
** The City-State of Cliffport gives its backing to Gobbotopia's claim to nationhood, since both nations have been attacked by the elves.
** While Elan sees [[spoiler: his father]] Tarquin as evil and [[http://www.giantitp.com/comics/oots0762.html doesn't want his help at first]], later when it comes to [[http://www.giantitp.com/comics/oots0818.html defeating Nale]] they rather AgreeToDisagree.
*** And promptly subverted when Tarquin [[spoiler: allies with Nale]].
** In the {{prequel}}, the appropriately-named ''StartOfDarkness'', Right-Eye attempts (unsuccessfully) to ally with human wizard Eugene Greenhilt, despite hating humans, in order to eliminate the threat BigBad Xykon poses to his own goblin minions.
* According to ''Webcomic/ScandinaviaAndTheWorld,'' the only way to get Iran and Iraq to stop fighting each other is to present them with someone they hate more: [[http://satwcomic.com/denmark-the-artist Denmark and his Muhammed cartoon]].
* The Light Warriors of ''WebComic/EightBitTheater'' are in a constant state of this. It's stated that the greatest threat to the team is each other.
* ''Webcomic/BasicInstructions'': [[http://basicinstructions.net/basic-instructions/2011/3/3/how-to-unite-against-a-common-foe.html How to Unite Against a Common Foe]]
* In ''Webcomic/{{Homestuck}}'', the Prospitian and Dersite armies briefly [[http://www.mspaintadventures.com/?s=6&p=003840 unite against Jack]] before being [[RedshirtArmy slaughtered en masse]]; the survivors are pretty chummy from then on.
* In ''Webcomic/KiwiBlitz'', when Blitz' kiwi mecha gets impounded, she decides to steal it back. She enlists the help of an earlier foe, a master thief known as The Raccoon.
* In ''Webcomic/FafnirTheDragon'', the far right wing of the Republican Party allies itself with al Qaeda to kill UsefulNotes/BarackObama on the day of his inauguration, which sets off the first arc of the series.
* The [[AntiHero pirates]] and the [[AntiVillain Imperial Guard]] of Webcomic/DubiousCompany are forced into this after Izor's Amazing Plan gets screwed and throws everyone into an alternate dimension.
* ''Webcomic/PennyAndAggie''; during the "Popsicle War" arc, when [[AlphaBitch Meg and Karen]] and their clique (including [[TheFundamentalist Charlotte]] and [[AxCrazy Cyndi]]) executed increasingly cruel stunts against both Penny and Aggie and their respective friends, Penny(whom Aggie had previously seen as a friendly enemy) forged a truce with Aggie to stand against Meg and Karen. This led to Penny and Aggie becoming FireForgedFriends (and in later arcs [[RelationshipUpgrade something more...]]). During the final arc, Aggie wrote [[http://www.pennyandaggie.com/index.php?p=1177 a sonnet about her history with Penny,]] summing up the Popsicle War arc with this stanza:
-->"My puzzling ally--pulling me by hand,\\
From [[DespairEventHorizon deep depression's suffocating pool]]\\
She joins my friends to hers, [[BandOfBrothers making a band]]\\
Of sunshine fire, to fight the truly cruel."
* In ''Webcomic/RustyAndCo'', [[http://rustyandco.com/comic/level-6-23/ Mimic points out the wisdom of this to Yuan-Tiffany, since they don't want to kill each other.]]
* In TwoKinds [[NoNameGiven one of the main character's old friends]] is a bit biased against [[FantasticRacism Keidran]]. However when the rest of their party is incapacitated by an assassin attack, he has to [[http://twokinds.keenspot.com/archive.php?p=689 put aside some old grudges.]]
* In ''Webcomic/{{Snowflame}}'', Snowflame and his {{Hero Antagonist}}s have to work together to bail out Arkham Asylum after it is flooded with fear gas.
* In ''Webcomic/CaptainSNES'', Golbez agrees to team up with Samus Aran against Eggplant Wizard and the Monkeyspank viral AI, mainly because he knows he doesn't know enough.
* ''Webcomic/MenageA3'': The trope is briefly but eloquently demonstrated by [[http://www.ma3comic.com/strips-ma3/when_time_comes_to_play Yuki and Sonya in this strip.]] They can't stand each other, but Angel just made the mistake of challenging Yuki's ego, Sonya's competitiveness, and the woman they both love.
* In ''Webcomics/GuildedAge'', when [[spoiler:the beast the cultists let into the world]] attacks, the Peacemakers and the World's Rebellion champions agree to work together to fight it. Neither side is particularly happy about it, but both agree that the threat to innocent life is too great for them to put their own conflict before stopping it.
* ''Webcomic/{{Consolers}}'': Nintendo, Sony, and Microsoft fight about everything except their shared hatred of Apple, a threat to their collective business.
[[/folder]]

[[folder:Web Original]]
* Common practice in ''Literature/{{Worm}}'', where both superheroes and rivaling super-villains will gang up on anyone causing enough trouble or breaking the unwritten rules, such as attacking a cape's family.
--> "Word gets around, and the cape community goes after the fucker. Protecting the status quo, keeping the game afloat. Bitter enemies call a truce, everyone bands together, favors get called in and everyone does their damndest to put the asshole down."[softreturn]
** And when [[EldritchAbomination Endbringers]] attack, virtually every parahuman available will come together.
--> "This is why we are tolerated, why society allows and accounts for the capes that walk the streets and fight in its towns. Because we are needed for situations like this."
* In ''Machinima/CultOfPersonality'', the oWn is trying to wipe out the RED and BLU corperations, and a band of mercenaries from both sides have to fight together to push oWn back.
* ''Machinima/Supermarioglitchy4sSuperMario64Bloopers'': If there is a bigger threat in a video involving [=SMG3=], he will join the good guys to take out the threat.
* In ''Script/MayXnocens'' July and Borne are only enemies because of the [[WellIntentionedExtremist questionable things]] July does to keep [[SealedEvilInACan Idius March]] from being released. Once Idius March is released this becomes a moot point and they team up.
* In ''Literature/ChronoHustle'' Jack is running around the timeline, and Melinda has been assigned to capture him, but Jack doesn't want to be locked up, since they can't send him back to his own time. But then it turns out that there's some big conspiracy going on, and they end up working together.
* When [[WhateleyUniverse Whateley Academy]] is attacked by a massive invading army, the usually bickering students drop everything to drive them off (though some of the Ultraviolents kept a few for the sake of... entertainment).
** A key part of the Whateley Charter is that anyone, charter signatory or otherwise, who attacks any student's family as a way of getting to said student is to be treated as fair game by the signatories for anything up to and including [[AscendedMeme orbital bombardment]]. Generally, those who ''have'' tried this in the past didn't survive long - this is one situation where the superheroes won't even try to restraint the supervillains.
* ''Wiki/SCPFoundation'', [[Characters/SCPFoundation Characters/SCPFoundation]], [[http://www.scp-wiki.net/scp-2069 SCP-2069 ("AEGIS")]]. In an AlternateUniverse, the SCP Foundation and GOC (Global Occult Coalition) are forced to team up to fight an AlienInvasion of the Earth.
[[/folder]]

[[folder:Web Video]]
* ''Series/DoctorWho TheAbridgedSeries'' lampshades it in part two of ''Logopolis Abridged.''
-->'''Master''': You know, Doctor, I believe TV Tropes calls this situation "EnemyMine". It seems we must join forces to face this common threat.
-->'''Doctor''': -sigh- [[YaoiFangirl The fangirls]] [[FoeYay are going to have a field day with this...]]
* About halfway through the play-through of the Bowser's Enchanted Inferno episode of LetsPlay/MarioPartyTV, the other three players realize that Steeler has all three of the bonus stars, and team up against him in minigames. Steeler did not approve.
* WebVideo/ObscurusLupa talks about this in one of her reviews in relation to the gay marriage debate. She notes that, whatever your views on the subject, it's pretty likely that both sides will be united in finding ''Film/BenAndArthur'' offensive.
[[/folder]]

[[folder:Western Animation]]
* ''WesternAnimation/DextersLaboratory'' episode "Let's Save The World You Jerk!"; Dexter and his rival Mandark are forced to team up to stop a barrage of asteroids from impacting and destroying the Earth. Unfortunately, their egos prevent them from cooperating, and they spend so much time fighting that the Earth ends up destroyed, with the two of them arguing over whose fault it was. Good thing for NegativeContinuity!
* In ''Franchise/TransformersGeneration1'' it's not unusual to see the Autobots and Decepticons (or {{exp|y}}ies of them) joining forces to take on a greater threat. It just takes a ''very'' large threat to make them do it. Usually [[PlanetEater Unicron]], but not always.
** In "The Insecticon Syndrome", Megatron and Optimus Prime fight together against the out-of-control Insecticons. Watching Optimus grab up Megatron's semi-conscious body and force-fold him into gun mode is [[FoeYay interesting]].
** In "Countdown to Extinction", it's Megatron and Optimus Prime cooperating again to stop [[TheStarscream Starscream's]] DoomsdayDevice. Watching Optimus worry over the damage Megatron is taking to unbolt the device is [[FoeYay fascinating]].
** In "Nightmare Planet", Springer and Razorclaw team up to slay a dragon. Razorclaw was planning to sit back and watch Springer get killed, but a princess bribed him with gold and pointed out that the dragon would most likely kill everybody.
** In ''WesternAnimation/TransformersAnimated'', during the second season finale, the Autobots and Decepticons' latest battle is interrupted by Starscream and his clones. The Autobots and Decepticons end up fighting the same enemy, and at one point Optimus and Megatron have a BackToBackBadasses moment... only for Megatron to grab Optimus and use him as a living shield. The clones eventually turn on Starscream later, join Megatron, and everyone is back to square one.
** In ''WesternAnimation/BeastMachines'', the Maximals join forces with the surviving Vehicons to survive when Savage appears.
** Earlier, in ''WesternAnimation/BeastWars'', this happened a ton between the Maximals and the Predacons, always during story arcs where the Vok, the godlike beings using Earth as their own Petri dish, become active again. For example:
*** The entire final arc of the first season kicks off with Megatron attempting to form a truce with the Maximals when it becomes apparent that the Vok are a much greater threat to both of them than each other.
*** In season two, when an alien ship appears that [[PutOnABus put Tigatron and Airazor on a long bus ride]], the two factions team up to try to break into it, but all bets are off when Megatron gets control of the ship and all its power. Though [[TheStarscream Tarantulas]] does team up with the maximals in order to prevent Megatron from using the Vok technology to leave Earth.
** ''WesternAnimation/BeastWars'' also had Dinobot's alliance with the maximals, at least as far as he was concerned. Optimus considered him a welcome member of the team.
-->'''Dinobot:''' I am Predacon, despite our alliance. When we return to Cybertron, my fate will be the same as Megatron's. Perhaps even worse.
-->'''Optimus:''' I won't let that happen. You're a Maximal now.
-->'''Dinobot:''' What makes you think I ''want'' to be?
** ''Anime/TransformersArmada'' is ''technically'' an anime, but whatever. In any case, its very ''title'' refers to the Autobot-Decepticon alliance formed in the final episodes to combat Unicron.
** ''WesternAnimation/TransformersPrime''. The Autobots temporarily team up with Megatron to stop Unicron from awakening.
* ''WesternAnimation/JusticeLeague'':
** In "The Return". ComicBook/LexLuthor is forced to work with the League to stop AMAZO, an android he himself had loosed on them in an earlier episode, from killing him. This applies to the League more, as AMAZO isn't out to do anything else not in his way (he moved Oa to another dimension because it was easier than fighting, and fought back against the League because they attacked ''him''), but he ''is'' after Luthor, who deceived and manipulated him. The League figures that the android will kill Luthor (at this moment in the series, in a HeelFaceTurn), so THEY decide to help HIM. Part of it was because [[ItsPersonal it was personal]] to GL John Stewart, as they didn't know he just moved Oa. They saw him approach the planet, give off a flash, and then it was ''gone''.
** Luthor and the entire Legion of Doom were forced to help the Justice League defend Earth from invasion by Apokolips. [[spoiler:''Luthor'' was the one who did Darkseid in.]] It was a collective decision of [[TheOnlyOneAllowedToDefeatYou "the only one allowed to take over the planet"]].
** Franchise/WonderWoman and Hades against Felix Faust although this wasn't by choice. She was ordered to reinstate Hades by the Gods, and when she still had some reluctance, it ended when Hermes pointed out how Faust was indirectly harming Wonder Woman's magical friends by usurping Hades' post.
** The episode with the Justice Lords. Luthor hilariously teams up with Good Superman ''just for the pleasure of zapping a Superman, '''any Superman''', with a Kryptonite laser gun.''
---> '''Good Superman:''' Go for it.
---> '''Luthor:''' Oh ''yes''.
** Darkseid asked the League for help when Brainiac attacked Apokolips in "Twilight". Over Superman's protests, the League agreed. [[spoiler:Supes' suspicion was vindicated, since the entire plot was a ploy by Darkseid to hand over Superman to Brainiac in exchange for Apokolips' safety. And ''that'' turned out to be an even bigger ploy to grant Darkseid access to Brainiac's systems so he could take control of Brainiac and use its processing power to obtain the Anti-Life Equation.]]
* ''WesternAnimation/CodeLyoko'':
** In "Marabounta", Jérémie's newest attempt to destroy XANA goes haywire and threatens to destroy Lyoko itself. XANA sends monsters to help the good guys destroy the threat. When the combined team is victorious, the heroes expect the monsters to immediately turn on them. Instead, the monsters bow and then leave without incident. (Jérémie does warn everybody that this truce was clearly temporary.)
** In the following episode, "Common Interest", Jérémie and XANA team up to save Lyoko and Aelita when the uranium battery that powers the Supercomputer starts dying. This time however, XANA does strike back immediately after the teamwork is through.
* In the animated TV show of ''Literature/TheNeverendingStory'', the main character teams up with the evil female character, who even saves him at one point.
* ''WesternAnimation/AvatarTheLastAirbender''
** A subversion occur in "[[Recap/AvatarTheLastAirbenderTheBlueSpirit The Blue Spirit]]", when Zuko ([[SecretIdentity in disguise]]) rescues Aang from Zhao because Zuko [[TheOnlyOneAllowedToDefeatYou needs to be the one to capture him]]. Hence his 'rescue' was an attempt to capture him.
** In "The Chase", [[spoiler:the gang inadvertently work with Zuko and Iroh to corner Azula. This gets broken when Azula attacks Iroh while he's distracted.]]
** When Zuko [[spoiler: has a HeelFaceTurn and joins the Gaang. Included here because, while Zuko truly wants to switch sides, the Gaang (especially Katara) still views him as an enemy for some time. Nevertheless, although the only reason the Gaang agree to join up with him is because Aang needs a firebending teacher, the two of them eventually decide to put their differences aside when they discover that they have more in common than they think, so it's not long before they're working smoothly together to take down the BigBad, becoming literal FireForgedFriends in the process.]]
** Iroh asks for the Gaang's help to save Zuko, while the Gaang needs help to save Katara. This is a very mild example since Iroh was practically on friendly terms with Toph already and Iroh was never that much of an enemy in any meaning of the word, but Aang and Sokka are suspicious at first.
** ''WesternAnimation/TheLegendOfKorra'' has an uneasy alliance between Korra's team and Varrick. They don't trust him, since Varrick was manipulating the Water Tribe Civil War from the start, but both parties do hate Unalaq. After all, success against Unalaq did depend on whatever Varrick could contribute, even if it was going to harm them.
** This happens again in Book 4, when [[spoiler:Zaheer, BigBad of the previous book, helps Korra overcome her trauma at his hands so she can defeat Kuvira, who is everything Zaheer hates.]] By the time of the finale Kuvira had a [[spoiler:HumongousMecha]], making the situation so dire that Lin had to release [[spoiler:Hiroshi Sato]] to help them defeat it. Sadly, [[spoiler:Sato doesn't last]].
* The title character of ''WesternAnimation/DarkwingDuck'' regularly teams up with his nominal enemies against more powerful foes.
** Electrical supervillain Megavolt has joined forces with Darkwing several times.
*** When the two fight on the same side against an enemy that threatened to destroy St. Canard, Gosalyn asks Megavolt why he's helping out. Megavolt explains that if the BigBad destroys the city, there'll be nothing left for him to rob.
*** After Megavolt's Electrolyzer malfunctions and sends him and Darkwing into [[RealWorldEpisode the human world]] in [[Recap/DarkwingDuckS1E40TwitchingChannels "Twitching Channels"]], they are forced to team up to find a way to return to their world (though Megavolt tries to double cross Darkwing at the last second).
*** Megavolt teams up with Darkwing in order to stop the Gosalyn-shaped representations of radio, light, and heat waves from wreaking havoc upon the city. His excuse for the team up this time? The physical representations of the electromagnetic spectrum hurt his feelings. (Darkwing was willing to work with him because he was an expert in the field - well, [[BunnyEarsLawyer the best one that was available]], at least.)
** Darkwing Duck teams up with IneffectualSympatheticVillain Bushroot a few times.
*** One episode features the crimefighter and the duck/plant hybrid fighting together against an invasion of evil cabbages from outer space. Bushroot justifies joining forces with Darkwing as follows:
---->'''Bushroot:''' "Hey, I may be a mutant plant-duck, sure, but I'm an ''Earth'' mutant plant-duck!"
*** Darkwing has to recruit Bushroot's help in [[Recap/DarkwingDuckS1E55SlimeOkayYoureOkay "Slime Okay, You're Okay"]] after the latter's [=IQ2U=] potion accidentally creates a giant sentient patch of lawn that threatened to devour them both; Bushroot launches Darkwing past the lawn, where he is able to summon a flock of sheep to devour it. As a gesture of gratitude, Darkwing lets Bushroot go free at the end of the episode rather than arresting him for breaking into the botanic gardens to steal ingredients for the [=IQ2U=] potion.
** Supervillain prankster Quackerjack allies himself with Darkwing in [[Recap/DarkwingDuckS1E54TheHauntingOfMrBananaBrain "The Haunting of Mr. Banana Brain"]], when [[MonsterClown Paddywack]] possesses [[CompanionCube Mr. Banana Brain]] and then traps both of them in a pocket dimension to be the permanent objects of his pranks. (That guy just wasn't funny.)
** In several episodes, Darkwing teams up with Megavolt, Bushroot, ''and'' Quackerjack, plus their fellow Fearsome Five member the Liquidator, invariably when they have been double-crossed by their leader, Negaduck.
*** Negaduck [[AllYourPowersCombined steals Megavolt's control over electricity, the Liquidator's control over water, and Bushroot's control over plant life]] with a magical gem in [[Recap/DarkwingDuckS1E60JailBird "Jail Bird"]]. (Quackerjack had no power to steal, other than his wackiness. [[WhatKindOfLamePowerIsHeartAnyway That's your cue, fellow tropers!]]) The now powerless supervillains reason that Negaduck has also stolen their weaknesses, and they recruit Darkwing to help exploit them to get their powers back and stop Negaduck from destroying St. Canard.
*** The four of them did it the second time the Fearsome Five worked as a team, ''again'' after Negaduck double-crossed them. (Apparently, they didn't learn the first time.)
* ''WesternAnimation/DungeonsAndDragons'':
** There were several times where the heroes called a truce with Venger for mutual benefit; for example, "Valley of the Unicorns", one of Venger's servants [[TheStarscream enacted a plan to take over]], so Presto decided the best bet was to tell Venger about it. In "The Box", Venger reluctantly allies with them in order to survive after [[GreaterScopeVillain his demonic master]] is freed.
** Also, the kids form an uneasy deal with Tiamat to fight Venger in "The Dragon's Graveyard".
* ''WesternAnimation/TeenTitans'':
** Robin must reluctantly team up with Slade to save Raven in "The End (Part 2). Slade uses this time trying to annoy Robin as much as possible, naturally. Later Slade helps them out with Trigon with his extremely badass antler cutting fiery ax. (He didn't ''have'' to come back, but he wanted to, because as he put it, "I'm ''nobody's'' servant.")
** Also the Titans team up with Gizmo to rescue Cyborg. Actually, Gizmo has no choice in the matter as Raven threatens to turn into some demon-monster and devour him if he doesn't. (Robin figured that Gizmo was the only one who was knowledgable enough to repair Cyborg, although a lot of fans did remember [[PutOnABus Fixit]] and thought that he might have been a better choice...)
** Robin also teams up with Red X in "X" to stop the theft of a dangerous substance. While the last time we saw Red X, [[spoiler: ''he was Robin in disguise'']] this time the [[spoiler:the Red X suit was stolen by [[RiddleForTheAges an unknown person]].]])
* A similar plotline occurred in ''WesternAnimation/TheBatman'', when the villainous residents of Arkham Asylum, freed by an alien invasion, join the fight against the aliens, with the Joker angrily stating that causing mayhem in Gotham is '''his''' job. He goes so far as to gleefully proclaim that the whole world has gone mad after seeing Gordon and Freeze protect each other's backs.
* ''WesternAnimation/InvaderZim'':
** Despite his declaration of "just this once" (quote at top of main page), Zim and Dib of have teamed up at least three times against various crises.
** Notable episodes: "Bolognius Maximus", "Hamstergeddon", "Halloween Spectacular of Spooky Doom", and "Tak: The Hideous New Girl".
** Subverted in "Planet Jackers": Zim reluctantly tries to form an alliance with Dib, as he requires Dib's telescope (Zim's has been broken). Dib refuses to believe Zim has (somewhat) good intentions and kicks Zim out of his house without allowing time for an explanation.
** Subverted (and lampshaded) in "Walk for Your Lives": Zim forces an alliance on Dib, who is the only way to stop a massive slow-motion explosion. Dib (who's also in slow-motion) gets fired out of a cannon into an explosion, causing it to speed back up and finish already. Only an alliance in the broadest of terms.
** There's another subversion in "Gaz: Taster of Pork," when Dib, evidently at the end of his rope, winds up going to Zim for help. He cites their partnership in "Bolognous Maximus" (which is an odd ContinuityNod to an episode that ended on a SnapBack), but Zim just [[WorldOfHam screams "YOU'RE MAKING IT UP!" at the top of his lungs at him]].
** Zim also provides Dib assistance momentarily in "The Most Horrible Xmas Ever" in order to get rid of/save himself from the Santa suit, but a minute later Zim convinces literally ''everyone'' to beat up Dib on grounds that he destroyed their precious Santa. And then the Santa suit ended up becoming a monster that returns to earth every year...
* ''WesternAnimation/CodenameKidsNextDoor'':
** In "Operation: I.T." the Delightful Children sell Father out and help the KND, because [[EvenEvilHasStandards even they can't stand broccoli.]]
** There was "Operation: M.U.N.C.H.I.E.S." After Sector V spent the whole story fighting nearly ever villain in the series over the last box of cereal in a supermarket, Knightbrace grabs it, but intends to destroy it, not eat it. So the heroes call a truce with the other villains to get from him. (And then all of them are able to share it at the end, making it a happy ending for everyone ''except'' Knightbrace.)
** ''WesternAnimation/OperationZERO'' had Numbuh 1 and [[spoiler:his father, Numbuh 0]], team up with Father and the Delightful Children from Down the Lane [[spoiler:a.k.a. Sector Z]] to stop [[BigBad Grandfather]]. [[spoiler:The alliance quickly peters out when Father loses motivation (despite being implied to be ''stronger'' than Grandfather) and [[ScrewThisImOuttaHere buggers off to go binge on ice cream]], while Sector Z is forcibly transformed back into their Delightful forms and attack Nigel]].
* ''WesternAnimation/DannyPhantom''
** Danny and his ghost hunting rival/enemy Valerie work together to outdo Skulker once they stop trying to torment one another. Being [[ChainedHeat handcuffed]] together didn't help matters.
** In the first movie, "Reign Storm", Danny, Vlad, and Valerie had to team up to try and take down the much greater threat that was Pariah Dark. In fact every enemy ghost came to help out during the final battle. (Except Dark Danny, [[SealedEvilInACan for obvious]] [[FutureMeScaresMe reasons]].)During the final battle:
--->'''Skulker''': Now, go! Defeat him, so I will be free to hunt you another day!
--->'''Danny''': (to Ember) Guy really knows how to motivate you...
** Danny teamed up with the rest of his foes to break out of Walker's prison in "Prisoners of Love."
** Danny and every single ghost in existence teaming up to turn the Earth intangible in "Phantom Planet." Wow, he ''does'' do this a lot!
** In the ChristmasEpisode, when the Ghostwriter tried to teach Danny a lesson, all other ghosts Danny met in the episode agreed to help him because the Ghostwriter broke the Christmas truce.
** In "Livin' Large", the [[TheMenInBlack Guys in White]] tried to blow up the Ghost Zone, unaware that it'd destroy Earth as well, and Danny teamed up with some of his ghostly enemies to stop them.
** Danny and Valerie teamed up again in "D-Stabilized" to defeat Vlad and [[spoiler: save Dani]]. [[spoiler: Bonus points for Valerie discovering Vlad's secret identity at the end!]]
* ''WesternAnimation/TheRaccoons'' episode "The Intruders" has the bad guy Cyril Sneer working together with the titular raccoons and their friends in order to save his own son and one of the raccoons who got trapped in his supersafe vault.
* In ''WesternAnimation/ThePiratesOfDarkWater'' episode "The Game Players of Undar", frog-like creatures effortlessly capture both the main hero and the main villain, handcuff them together, and force them to work together to win a dangerous game on an island for their own amusement.
* ''WesternAnimation/BatmanTheBraveAndTheBold'':
** In the episode "Game Over For Owlman", Batman is forced to team up with [[spoiler:his arch nemesis, The Joker]] after the rest of the heroes of the series become convinced he has become a bad guy thanks to the machinations of his EvilTwin Owlman.
** And again with Two-Face in the beginning of "The Fate of Equinox", after his hired henchmen go against his decision to spare Batman.
* Commander X-2 did this with WesternAnimation/DuckDodgers and his Cadet on occasion -- especially when his Queen was in direct danger. Awwwww.
* ''WesternAnimation/ThePowerpuffGirls'':
** One episode had them needing Mojo Jojo's help to beat this huge alien thing that was so evil even Mojo considered it his superior.
** Another episode had the Gangreen Gang helping the girls to defeat Sedusa after she abandons them when [[YouHaveOutlivedYourUsefulness she no longer needed them for her plan]].
* ''WesternAnimation/AdventuresOfTheGummiBears''
** In one episode ("Just a tad smarter"), Toadie's cousin Tadpole takes over Castle Drekmore, kicks Duke Igthorn out, and orders the ogres to destroy all the gummiberry bushes. Neither Igthorn nor the Gummis want the bushes destroyed, so they reluctantly team up to get rid of Tadpole.
** In another episode("For a few sovereigns more"), Duke Igthorn hires a bounty hunter to catch a Gummi Bear. When the hunter returns with Cubbi Gummi but Igthorn refuses to pay, he and Cubbi are tossed into a dungeon cell, and have to work together to escape. That episode was a ChainedHeat, as well.
* ''WesternAnimation/TheFairlyOddParents'':
** [[SadistTeacher Mr. Crocker]] teams up with Timmy to get rid of the new substitute in one episode.
--> '''Mr. Crocker''': [[LampshadeHanging Are you aware of the phrase "The enemy of my enemy is my friend."?]]
** In the "Wishology" trilogy, all of Timmy's friends and allies except for Mark are captured. Needing help, he recruits [[AxCrazy Vicky]], [[EvilTeacher Crocker]], and [[GalacticConqueror Dark Laser]] to battle the Darkness. He needs to offer them something: 20 dollars, a look at his fairies, and an opportunity to destroy him when it's over, respectively.
* Happened several times on ''WesternAnimation/{{Gargoyles}}''. David Xanatos is such a MagnificentBastard that the Manhattan Clan always suspected they were being used. Occasionally they were wrong.
* ''WesternAnimation/TheSimpsons'':
** Bart and Lisa from teamed up with Sideshow Bob in "Brother From Another Series" to stop Bob's brother, Cecil, from blowing up the Springfield Dam to destroy the evidence that he cut back on construction to embezzle funds.
** While not quite an ''enemy mine'' per se, they also had some help from Sideshow Bob in identifying the real culprit of Homer's kidnapping in "Wedding for Disaster" [[spoiler: it was Patty and Selma Bouvier, the latter of whom was ironically a former near-victim of Sideshow Bob.]]
* ''WesternAnimation/StarWarsTheCloneWars''
** In the finale of Season 4 [[spoiler: Obi-Wan and Ventress team-up against Savage and Maul.]]
** This became the first of a couple of [[EnemyMine Enemy Mines]] Obi-Wan had against [[spoiler: Maul]]. In Season 5 he teams up with the pirate Hondo Ohnaka (although his status as an enemy is debatable), and then later the Death Watch member Bo-Katan, who had gone against [[spoiler: Maul's take-over of the Death Watch and Mandalore. Bo-Katan even Lampshades this when she does an earlier EnemyMine with her sister, Satine.]]
--->'''Bo-Katan''': The enemy of my enemy is my friend.
** Ahsoka and a couple of Jedi younglings also teamed up with Hondo and his pirates in order to fight General Grievous and escape Florrum.
* ''Franchise/GIJoe'':
** In the anti-drug episode of the Joes and the Cobras recognize a common enemy in the drug kingpin Headman and enter an awkward alliance to take him out.
** They also team up against "The Gamesmaster" after he captures members from both sides.
* Happens often in the ''WesternAnimation/{{Ben 10}}'' franchise. Ben's teamed up with [[EvilCounterpart Kevin]], a [[FantasticRacism Highbreed]], [[ManipulativeBastard Darkstar]], [[DarkMagicalGirl Charmcaster]], and [[ArchEnemy Vilgax.]]
* Buzz Lightyear and the Evil Emperor Zurg work together to beat aliens that intend to conquer the entire galaxy, including Zurg's home, in an episode of ''WesternAnimation/BuzzLightyearOfStarCommand''.
* In the ''WesternAnimation/{{WITCH}}'' season two episode "W is for Witch", Will decides to recruit season one BigBad Prince Phobos and his crony Cedric in subduing Nerissa. The end result? The start of a GambitPileup that doesn't end until the series finale!
* ''WesternAnimation/WinxClub'' got in on this as well. Season 1 saw the Cloud Tower student witches moving in with the fairies at Alfea to fight the Trix, and one of the major complaints about this arc is that they're nowhere to be seen during the battles. Season 2 features this trope again at CT, and although Musa and Layla are briefly shown fighting the Trix together with the student witches, they're again nowhere to be seen afterwards. Although the events of S1 haven't been completely forgotten by the time of the S2 arc [[note]]in the original at least, as the Winx specifically mention this while heading to CT[[/note]], the witches still dread teaming up with the fairies.
* ''WesternAnimation/HeManAndTheMastersOfTheUniverse1983''
** In the episode "The Witch and the Warrior", Teela and Evil-Lyn are forced to work together when they are stranded in the desert and Evil-Lyn has been BroughtDownToNormal. One of the most popular episodes due to all the [[HoYay Les Yay]].
** There's also the episode with Evil Seed, a plant monster who appears and starts beating down heroes and villains alike. He-Man, The Sorceress, and after ''much'' reluctance, Skeletor team up to take the guy down.
* One episode of ''WesternAnimation/SheRaPrincessOfPower'' featured She-Ra and Hordak accidentally sent to another dimension and having to join forces to return.
* The fifth season of the 2003 ''WesternAnimation/{{Teenage Mutant Ninja Turtles|2003}}'' series features the Turtles (along with the Ninja Tribunal's human accolades and the Justice Force) [[spoiler: teaming up with Karai, Hun, and Bishop to fight the Tengu Shredder.]]
** During the "Return to New York" arc in season 1, when Baxter Stockman [[TheDogBitesBack betrayed the Shredder]] and attacked both him and the Turtles, threatening everyone. The Turtles and Shredder briefly join forces to defeat him before resuming their battle.
* [[TeenageMutantNinjaTurtles1987 80's cartoon as well]].
** When the "Killer Pizza" monsters go berserk, the Turtles and Shredder have to team up to keep the creatures from killing all of them. It's even given a lampshade by Leonardo and Donatello.
** Also happens in the "Turtles Forever" film. [[spoiler: Krang and '87 Shredder]] join forces with the '87 and '03 Turtles at the end to stop the Utrom Shredder from destroying the multiverse.
* Done twice in TMNT 2012, once in "Baxter's Gambit" when Xever [[spoiler: saves Raphael from the giant fan, saying that only he gets to kill the turtle]] and again in Annihilation!Earth, when [[spoiler: Splinter and Shredder work together to stop the Triceratons, only for Shredder to turn and literally stab Splinter in the back.]]
* ''WesternAnimation/KimPossible'':
** In the GrandFinale, the title heroine and her partner Ron team up with their longtime foes Drakken and Shego to save the planet from an AlienInvasion. Ironically, Drakken (who never once succeeded in his career as a MadScientist, this even being {{lampshade|Hanging}}d by his rival Dementor), came up with the plan to use his newly acquired plant powers to stop the [[TripodTerror alien war machines]].
** There were previous instances of Kim and Shego joining forces against a common enemy: Kim enlisted Shego's help against an old Team Go enemy in "Go Team Go", and Shego [[TheOnlyOneAllowedToDefeatYou stopped Drakken's new sidekick from beating Kim]] in "Mad Dogs and Aliens".
* ''WesternAnimation/ReBoot''
** This happens in the second season finale. Bob is forced to team up with Megabyte and Hexadecimal to stop the Web from destroying Mainframe. However Megabyte, being the MagnificentBastard that he is, takes advantage of the situation to betray Bob and strand him in the Web.
** However, an earlier episode has Megabyte actually honoring his commitment. Megabyte's goons steal game energy in an attempt to break into the Archives. Unfortunately for Megabyte, he gets trapped in the game that they steal the energy from. When the User loads a new game and it collides with the current one, Megabyte gets trapped sinking into quicksand while being shot at by a T-Rex with a machine gun. After begging Bob for help, Bob decides to save him. Later in the same episode, Megabyte kidnaps Enzo. After the gateway command is he stole is destroyed, Bob reminds him how he saved him in the game he lets Bob save Enzo without a fight. As they're leaving, Megabyte says, "Now we're even, guardian. Now we're even."
* The main plot of ''Disney/{{Mulan}} II'' required the protagonists, under the Emperor's orders, to travel over to Qui-Gong to forge an alliance with the kingdom in what is essentially an enemy mine gambit to defend China from the Mongolians' imminent invasion.
* An episode of ''WesternAnimation/JimmyTwoShoes'' had Lucius team up with Jimmy to defeat [[ScrewLearningIHavePhlebotinum Genius Beezy]]. Also Heinous vs Clown was made of Enemy Mine.
* The 90s ''WesternAnimation/{{X-Men}}'' animated series did this with ''every'' appearance of Magneto after his introduction. [[FriendlyEnemy Every.]] [[EvenEvilHasStandards Single.]] [[AffablyEvil Appearance.]] Except for one time when he helped Apocalypse capture a psychic-empowered mutant for his master plan. It got to the point where, during the GrandFinale, he was considered an honorary X-Man, and shown as part of the team in the final shot of the series.
* In the ''WesternAnimation/XMenEvolution'' episode "Survival of the Fittest" they worked with the Brotherhood to stop TheJuggernaut. Then at the end of season 2 the X-Men and Brotherhood teamed up against first Magneto's team and then the Sentinel. The arc plot for season 3 involved everyone trying to stop the [[SealedEvilInACan unsealing]] of Apocalypse, and season 4 ended with Apocalypse and his four mind-controlled Horsemen against the X-Men, the Brotherhood, Magneto's team, and the now-SHIELD-controlled Sentinels.
* ''WesternAnimation/TheSpectacularSpiderMan'':
** In one episode, Spidey made a temporary alliance with [[TheBrute the Rhino]] to destroy a specs program which gave the owner the instructions on how to make more Rhino-armored supervillains. The original Rhino wasn't too happy about that, so after battling [[TheDragon Hammerhead]] and ComicBook/SilverSable for it, Spidey offered a team-up. After it was destroyed, however, things went back to normal...
** Spider-Man also made an unofficial alliance with [[BigBad Tombstone]] to take down their mutual foe, [[MagnificentBastard the Green Goblin]].
* ''WesternAnimation/FamilyGuy'':
** A non-combat version occurs on when [[AuthorAvatar Brian]] tells [[TheFundamentalist Francis]] that they have to work together to stop Peter's new religion.
** There's also their ShowWithinAShow "Bigger Jaws" which parodies the concept, by having boaters fight off a shark until [[AlwaysABiggerFish a bigger shark comes along]], scaring them both.
-->"''[[LampshadeHanging Oh my god, now we have a common enemy, we have to work together]].''"
** Another variation had [[ButtMonkey Meg]] and [[AlphaBitch Connie]] team up to make take down a newly-popular Chris.
* ''WesternAnimation/MegasXLR'' did this when Coop and Gorath got trapped in a MirrorUniverse and were captured by Mirror Jamie. Then Mirror Jamie joins the EnemyMine when Mirror Coop shows up to kick their asses. This one ''almost'' became permanent after Coop and Gorath succeed in defeating Mirror Coop, but then Megas trips and ends up destroying Gorath's entire army. That ends the team-up.
* ''WesternAnimation/TheNewAdventuresOfSuperman'' episode "Luminians on the Loose". After ComicBook/LexLuthor brings the title creatures to Earth, they turn on him and try to kill him. Luthor is forced to team up with Superman to defeat them.
* ''WesternAnimation/SouthPark:''
** Played with when [[SociopathicHero the Coon]] asks for [[IneffectualSympatheticVillain Professor Chaos]]' help with Mysterion, which is actually more of a VillainTeamUp.
** In "It's A Jersey Thing" Randy decides to turn to ''[[RefugeInAudacity Al Qaeda]]'' for help.
-->'''Randy''': Our country's getting back to normal, and we owe it all to OsamaBinLaden. On this day let us all remember that no people on this earth are really enemies, only folks with differences.
-->[Paratrooper shoots Bin Laden].
** In "Goth Kids 3: Dawn of the Poseurs" the {{Goth}}s and their [[FandomRivalry sworn enemies]], the [[PerkyGoth Vampire]] kids, team up to defend the world from their greatest foe: [[EmoTeen emos]].
* ''WesternAnimation/{{Hurricanes}}'' episode "Target: Winston" had Winston Honeychurch fearing for his life. [[ActionGirl Amanda Carey]] had, at first, believed [[BigBad Stavros Garkos]], the series' main villain, was behind this and, along with Stats, went to his hotel room to spy on him but were caught. Wanting to know what Amanda was up to when she accused him, the [[NotMeThisTime this time innocent]] Garkos told his main thugs, Wyn and Genghis, to help her.
* ''WesternAnimation/XiaolinShowdown'':
** One episode has the CardCarryingVillain Jack Spicer save the Xiaolin monks from the re-humanized evil sorceress Wuya. He then explains that he's willing to provide any help they need in order to defeat Wuya, since he sees her as a threat to his ''own'' plans of world domination.
** In the episode "Dangerous Minds" of season 2, Jack ends up accidentally freeing ancient spider creatures that are described as "neither good nor evil, they are simply consumers". They will literally eat everything, the world itself until there is nothing left. The villains don't like this as they want to rule the world not destroy it. [[TheHero Omi]] and [[MagnificentBastard Chase Young]] team up to stop the spiders and save the world. Chase even [[ExploitedTrope uses this as part of his plan to convince Omi to join his side.]]
* ''WesternAnimation/BatmanTheAnimatedSeries'':
** In "The Trial", which featured the city's new District Attorney blaming Batman for all the superpowered criminals in Gotham City. This eventually leads to the DA being kidnapped by the villains and Batman being captured while trying to rescue her. The villains then put Batman on trial for ruining their lives and turning them into criminals, and they make the DA serve as Batman's defense lawyer. The DA demolishes the villains' claims one by one, pointing out that they were all responsible for their own problems and would have become villains anyway; the only thing Batman ''really'' influenced them to do was wear costumes. The villains are forced to acquit Batman, but they decide to kill him and the DA anyway ForTheEvulz. Now that the DA has done her job, it's time for Batman to do his...
** Then there was the episode "Harlequinade", where Batman recruited Harley Quinn's help to find the Joker when he stole a nuclear weapon (offering her parole as an incentive). Harley didn't quite manage to stand up to Mistuh Jay in this episode, but she came close. (She would eventually, later.)
* ''WesternAnimation/TheDreamstone''
** [[DefiedTrope Defied]] in the episode "The Statue Collection", when both sides get stranded on a desert island and Sgt Blob and Albert are antagonised by a sea monster, Frizz and Nug quickly assemble a war device to fend it off. Rufus and Amberley, convinced it's [[UnwantedAssistance doing more harm than good]] (and likely still pissed about them [[TakenForGranite turning Pildit into stone]]) knock the two out, leaving Albert to take care of the monster by himself.
** Played straighter in "The Dark Side", after the Urpneys capture the heroes, they are attacked by another monster. [[FriendToAllLivingThings The Dream Maker]] negotiates with it in return for the Urpneys releasing them (it's shrewdly implied the monster was [[SubvertedTrope really a docile friend that played tough to help scare the Urpneys away]] though).
** Another light example happens in "Return Of The Nightmare Stone" where Urpgor, after being rendered redundant by Zordrak's new stone, advises the Noops to throw it into the BottomlessPit.
* Shere Khan assisted Baloo in a few ''WesternAnimation/TaleSpin'' episodes. Also in "Stuck On You" where Don Karnage must make a truce with Baloo when they are accidentally glued to each other (and his crew create a mutiny).
* ''WesternAnimation/ThomasTheTankEngine'':
** The Troublesome Trucks from are known to play tricks on the engines from being the cause of their accidents to mercilessly make up jokes and songs about them, but they are times where they and the engines can be on the same side when dealing with a common foe. In "Special Attraction", they helped Percy deal with a disagreeable boat named Bulstrode and in "The World's Strongest Engine" when Thomas and Percy lampshaded at the end of said episode that they've learned that even troublesome trucks can do an engine a favor, especially if it's getting rid of an [[FantasticRacism prejudiced]], [[SmallNameBigEgo arrogant]] Diesel.
** The Diesel have always had a heated rivalry with "steamies", though there are times even the most prejudiced of both kind have ended up teaming up to solve a dilemma. This is the entire plot of "Calling All Engines" where both must work together to build Sodor's airport, which culminates in Thomas even having to get [[BigBad Diesel 10]] for help.
* ''WestrernAnimation/SpongeBobSquarePants'':
** Mr. Krabs and Plankton have teamed up on a number of occasions. The most notable being "''Best Frenemies''", where the two try to take down a restaurant more successful than either of theirs.
** Another example is "''Eeek, an Urchin!''", where Plankton helps the Krusty Krab crew settle a sea urchin infestation, because "he can't steal the formula with vermin running around".
* ''WesternAnimation/{{Recess}}'' had at least two instances where Randall ends up forging a truce. Not to mention the movie where Randall, Miss Finster and Principal Prickley team up with the kids against a villain that wants to create eternal winter
* In ''{{WesternAnimation/Motorcity}}'', "Red" resents Mike Chilton for leading the group that destroyed the home he supposedly lived in. He ends up joining forces with Kane for this reason, despite the fact it was really Kane who is responsible for the destruction of his Motorcity home.
* In ''WesternAnimation/StreetFighter'' episode "Strange Bedfellows" (for those who don't know, it's a former name of this trope), Guile and Bison teamed up against Akuma.
* Several ''WesternAnimation/TomAndJerry'' cartoons have the titular cat and mouse teaming up to get rid of an enemy, such as ''Dog Trouble'', ''Old Rockin' Chair Tom'' and ''Triplet Trouble''.
* * In one episode of ''WesternAnimation/TheRealGhostbusters'', a guy hates chickens so much, that he actually summons a demon to make [[DealWithTheDevil the standard bargain]] in exchange for ridding the Earth of them. Later, the demon is so humiliated at having to grant such a silly request (and is the laughing stock of the netherworld), he enlists the help of the Ghostbusters to void the contract. (He ''is'' somewhat threatening in the way he convinces them to listen, but it's still an alliance for mutual benefit, so it counts.)
* In ''WesternAnimation/StevenUniverse'', Peridot eventually teams up with the Crystal Gems to stop [[spoiler:The Cluster]], or else they all die. [[spoiler:She becomes an official member of the Crystal Gems after insulting Yellow Diamond to her face in Message Received for not wanting to stop The Cluster]].
* ''WesternAnimation/SonicBoom'' has this as a recurring theme in its episodes. A few examples include:
** In "[[SonicBoomS1E2CanAnEvilGeniusCrashOnYourCouchForAFewDays Can an Evil Genius Crash on Your Couch For a Few Days?]]", after Eggman's Obliterator Bot malfunctions and prepares to destroy his island fortress, Eggman is forced to team up with Sonic and his friends to stop it. Sonic initially refuses at first, until Eggman reveals that if his base is destroyed for real, he will have to stay with Sonic until it's repaired. Sonic decides to help him after all upon hearing that.
** In "Hedgehog Day", Eggman [[GroundhogDayLoop creates a time loop]] during a battle with Sonic and his friends, and [[FailureIsTheOnlyOption since this time loops resets any victory he has over them]], [[PragmaticVillainy he enlists their help in stopping the time loop]].
** The main premise of "The Curse of Buddy Buddy Temple" is that Sonic and Eggman are trapped in an ancient temple that forces them to work together in order to escape from it.
** In "Let's Play Musical Friends", Sonic and his friends assist Eggman into sending Orbot and Cubot into the "17-bit" dimension to reclaim his lair and his robots back from Nomanitus, who has overtaken them with a digital virus.
** In "[[Recap/SonicBoomS1E26EggmanUnplugged Eggman Unplugged]]", after Eggman gives up technology (save for Orbot and Cubot, mostly so they can pull his Eggmobile), the Lightning Bolt Society takes over his lair, and (inadvertently) unleashes his robots on the village. Towards the end of the episode, when he decides to start using technology again after Dave shuts off Orbot and Cubot, he teams up with Sonic and his friends to sneak into his lair and stop the Lightning Bolt society.
** In "Mayor Knuckles", Knuckles abuses his power as the temporary mayor by approving too many laws, one of which involves giving the sanitation engineers vacation time. Eggman [[PunchClockVillain isn't up to anything particularly evil in this episode]], as he just wants his trash picked up. Sonic agrees to help him stop Knuckles to get the village back to the way it was before.
** In "Next Top Villain", Dave the Intern captures Eggman and tries to destroy the village with his Octopus Bot. Sonic rescues Eggman, who assists in helping him get his Octopus Bot back from Dave.
* In ''WesternAnimation/TotalDramaPresentsTheRidonculousRace'' the Ice Dancers and the Police Cadets team up (along with the Daters) to work together against an alliance of the other remaining teams. It doesn't last long.
[[/folder]]

[[folder:Real Life]]
!!TropeNamer
* The proverb is of either ancient Arabic or Chinese origin, but the closest you're going to get to a {{Trope Namer|s}} is Creator/NiccoloMachiavelli, who coined this principle: the neighbour is the natural enemy; hence the neighbour to the neighbour is the natural ally.
* Another proverb, which provides the Alt Title for this trope: "War and politics make strange bedfellows." Usually quoted with either war or politics mentioned alone, as appropriate for the situation.

!!Business and Commerce
* Companies like Website/{{Google}} and Microsoft have always had their conflicts. But as soon as bills like SOPA showed their fangs? Suddenly, the ''[[UpToEleven entire internet]]'' was united to fight back. Whether the companies fight for freedom or money is unknown, but no one seemed to care anyway.
* Automotive example: Holden and Toyota teamed up to produce the Holden Commodore VR and the [[http://www.redbook.com.au/used-cars/Toyota/Lexcen/values-model-make.htm Toyota Lexcen]]. However, the Lexcen was not a [[MarketBasedTitle export model]], but solely an Australian version of the Commodore, but without the Commodore's big, brash, American V8 engine, instead only getting a Buick V6 engine. This was created so Toyota had a rival for the Ford Falcon (apparently the 1991-1995 Toyota Camry, incidentally, this was sold as a Holden too, the Holden Apollo being roughly the same size as a BMW 3-Series), a big car, and one of the Asia-Pacific region's biggest sellers. Needless to say, General Motors' (owners of Holden) alliance with Toyota ceased in 2005.
* The world of high-end electronics works in weird ways. Building a chip fab is eye-wateringly expensive and complicated, and thus there is a limited amount of enterprises in the world that can build advanced processors, memory and what have you. Also, high-level research is expensive and time-consuming, so the few really successful designs tend to stay dominant for a while and be licensed to everybody. As a result, strange collaborations spring up.
** Pentax and Sony have long been rivals in the budget-conscious [=DSLR=] market (the primary market being squarely dominated by Canon and Nikon), but from the K-x onward Pentax has stopped using its own sensors and uses Sony ones under license.
** For a long time Apple used Samsung-provided memory and screens, despite Samsung being their most dangerous rival on the market. This particular relationship ended sourly when Samsung proved more dangerous than at first thought, and Apple started a string of expensive legal proceedings against them. Samsung said "well, fuck that" and is no longer making much of anything for Apple.
** Apple and Samsung also have a common EnemyMine: Qualcomm (who produce system-on-chip, or [=SoC=], platforms for tablets and cellphones). The former needs them for cellular modems and the latter uses their chips for US versions of phones, even though they have their own [=SoC=].
* In the midst of a certain ugly and rather scandalous dispute between CBS and Time Warner Cable, TWC's biggest competitors voiced their support for TWC against CBS's underhanded and consumer-unfriendly anti-TWC tactics.

!!Crime
* Infamous American gangster "Lucky" Luciano bargained for his release from prison after claiming that he could protect American wharfs from saboteurs with gangster muscle. Some people suspect that it was actually Luciano's men, if anyone, who were causing the problems in the first place.
** Luciano also supposedly made available contacts in Sicily to military intelligence during the Italian campaign, a claim that he also later denied. Given that the Fascists intended to wipe the Mafia out, the claim has some credence. This also surfaced with the invasion of France, where the Corsican Mafia agreed to provide intelligence in return for the US overlooking their drug operations to American ports. This developed into the "French connection" of infamy, and the relationship between the Corsican Mafia and CIA later proved useful for using them as local "muscle" to bust the French Communist-run dockers union when they struck in Marseilles, preventing the US shipping needed military supplies over to help France hold down Vietnam ([[CaptainObvious not that it worked forever anyway]]).
* Gang bangers in small cities have been know to team up against police and non-local gangs moving in then go back to fighting each other again.

!!Entertainment
* Creator/GeorgeTakei attempted to reconcile the feud between ''Franchise/StarTrek'' and ''Franchise/StarWars'' {{Fan Boy}}s by encouraging them to unite against a greater evil -- ''Literature/{{Twilight}}'' and its {{fan|Dumb}}s.
** When ''Twilight'' first came along, every fandom which had ever had rivalry with ''Literature/HarryPotter'' was suddenly allied with the ''Potter'' fans against the ''Twilight'' fans.
* This actually happens quite a bit in music. Some genres (such as Heavy Metal and Rap) will have people who believe that they should put aside all differences and unite against other types such as pop. Look on any Website/YouTube music video not relating to pop music.
** Rockers and rappers are also often allied against censorship that wants to make all music family-friendly.
** It happens quite a bit within pop music's own fan culture world too. For example, we have the alliance forged between Music/TaylorSwift's Swifties and Music/LadyGaga's Little Monsters against Music/KatyPerry and her Katycats, after the reveal of Swift's song "Bad Blood", written about Perry. Meanwhile, Gaga was already Perry's rival as the two leading way-out-there performance artist type female pop stars.
* ElectronicArts essentially has made this happen indirectly for rival gaming communities, as [[ImageBoards 4chan]], Website/{{Reddit}}, Kotaku, and othershelped them get declared 2012's [[http://consumerist.com/2012/04/congratulations-ea-you-are-the-worst-company-in-america-for-2012.html Worst Company in America]] by The Consumerist.
* Larry Flynt resents Woody Harrelson for his portrayal of him in ''Film/ThePeopleVsLarryFlynt'', but vocally supported him when he intentionally got himself arrested for marijuana possession in protest over the law prohibiting it.
* Music/{{Slayer}}, bane of Religious Conservatives everywhere (at least in the 80's), released a ''pro-life song''. (But see below.)
* John Denver, [[Music/TwistedSister Dee Snider]], and Music/FrankZappa once gave an anti-censorship presentation to the Parents Music Resource Center in defense of several hip-hop and heavy metal songs.

!!New Media
* The websites YTMND.com, Newgrounds, Fark, Somethingawful, and 4chan have never had a relationship with each other that could quite be described as cordial, but in 2006, in response to the theft of intellectual property from YTMND by Ebaumsworld.com, they all joined together [[CrowningMomentofAwesome and proceeded to raid Ebaums, knocking the site offline for days on end]].
* American Censorship Day had a bit of this. In particular, groups like Wiki/{{Wikipedia}}, Mozilla, Website/{{Reddit}}, and Google were fighting alongside ''4chan'' for a common cause (though this may be more of a RivalsTeamUp; nobody particularly ''likes'' 4chan, but there's little actual hostility from the mentioned groups). Republican Darrell Issa also posted a tweet noting how both he and Democrat Nancy Pelosi were against SOPA.
** The sites blacked out on that day also ranged from [[Series/TheOReillyFactor Bill O'Reilly]]'s to MoveOn.org.
** Videogame/{{Minecraft}} and Videogame/{{Roblox}} normally ''loathe'' one another, but both of them were able to come to the agreement that SOPA was bad mojo, causing a temporary redirection of their rivalry towards fighting against it.

!!Politics
* Blair's Law posits that "the world's multiple idiocies are slowly becoming one giant useless force" and that wildly different radicals and extremists sometimes attract. Read on for examples. The phrase was named after Tim Blair, a conservative political commentator in Australia.
* In the 1990s, pro-Israel American neoconservatives and Islamic activists shared a common enemy in the form of Slobodan Milosevic's Serbian chauvinist regime.
** Even weirder, white supremacists and the anti-imperialist left found themselves on the same side, opposing NATO intervention. Creator/ChristopherHitchens believed that this was when the left lost its way.
* [[StrawFeminist Militant feminists]] and [[MoralGuardians conservative Christians]] disagree on almost every issue, with the exception of one: they are both opposed to pornography. The feminists feel that it's exploitative of women, while the Christians feel that it's immoral, sinful, ''and'' exploitative.
** The odd alliance between the Religious Right and militant feminists on the subjects of porn and prostitution has been frequently {{lampshade|Hanging}}d and criticized by more moderate "sex-positive" feminists. There's considerable debate in the feminist camp as to whether or not sex work is exploitative, especially when the participants are fully willing.
** It gets better. A proposal to create a ".xxx" top-level domain for internet porn was recently approved by ICANN, resulting in an alliance between the Religious Right (who fear that it will legitimize pornography) and much of the porn industry (who fear that it will lead to tighter regulation) against it. Alliances don't get much stranger than that.
** Similar to the issue of the ".xxx" top-level domain for internet porn, both the Religious Right and the porn industry are opposed to making it legal for women to go topless. The former believe that it's immoral, while the latter... Well, they feel that it would dramatically decrease business for them -- since there would no longer be a demand for "topless pornography".
*** Except, in several states (including New York) it IS legal for ANYONE to go topless, as long as they don't enter private businesses that request you not to (i.e. the famous "[[DressCode No shirt, no shoes, no service]]" rule).
** Margaret Atwood's ''Literature/TheHandmaidsTale'' has this unusual alliance to blame at least partially for the creation of [[{{Dystopia}} Gilead]].
** Similarly, the alliance between militant feminists and the Christian Right in banning the wearing of burqas (as seen in France and Belgium). Militant feminists think burqas oppress women and restrict their rights, while the Christian Right tend to cite "fundamentalism" creeping into society. Although burqas are banned in several explicitly Islamic nations already, so it's a bit more complicated than that, and burqa bans create an enemy mine on the other side of the fence: religious Muslims and political liberals (in the "small l" sense of "let people do what they want within reason."
** The list of things these two factions agree on gets longer: both have been critical of [[TheNewRockAndRoll heavy rock music,]] have shown a liking for [[MoralGuardians purging libraries]] of controversial books, both favor harsh 'law and order' stances against sex crimes, lean towards thinking that AllMenArePerverts whom it is woman's duty to [[WomenAreWiser set on the straight and narrow]] and in extreme cases, fully believe that SexIsEvil.
** Certain factions of the feminist movement have a [[RealWomenNeverWearDresses strong distaste of the colour pink]], as [[PinkIsForSissies do many]] [[RatedMForManly chauvinistic dudebros]]. This irony is not lost on some of the moderate branches of feminism who believe that rejecting the concept of prescribed gender roles is ''not'' the same thing as rejecting anything considered "feminine" - and that hating pink (for reasons other than simple personal preferences) can be misogynistic itself.
* [[http://www.smithsonianmag.com/history-archaeology/Wayne-B-Wheeler-The-Man-Who-Turned-Off-the-Taps.html?c=y&page=4 It seems]] that the enactment of Prohibition in the US was facilitated by some very strange bedfellows indeed -- Klansmen allied with militant labor unions?
* Islamic and Christian fundamentalists are generally opposed to each other, with the subscribing to different religions and being, well, fundamentalists. However, creationist works and arguments critical of Darwinism tend to pass between both groups, as do tracts critical of homosexuality.
** Amongst the most extremist elements of both, this also applies to anti-Semitic tracts, most notably ''Literature/TheProtocolsOfTheEldersOfZion''
* During the 1800 election in the United States, UsefulNotes/AlexanderHamilton and UsefulNotes/ThomasJefferson both decided that they hated Aaron Burr more than they hated each other, thus leading to Hamilton persuading the Electoral College to vote for Jefferson instead of Burr.
** Similarly in 1824, UsefulNotes/JohnQuincyAdams and UsefulNotes/HenryClay against UsefulNotes/AndrewJackson.
* Astonishingly common in US political history, compared to other countries. In fact, both main parties were this during a great deal of their history. To make things further complicated, there often have been alliances between members of opposite parties, which sometimes lead to political realignments. Indeed, both the Whig and the Republican parties were in large part formed by different interests that teamed up in opposition to the policies of the Democratic governments of the day.
* In 2006, Nigerian President Olusegun Obasanjo tried to change the constitution to allow himself to contest for a third term in office the next year. This led to a feud with his Vice President (and heir-apparent) Atiku Abubakar. To stop the amendment, Atiku teamed up with opposition leader Muhamadu Buhari who was planning a presidential bid as well. They successfully kept Obasanjo out of the race, but their alliance fell apart soon after since neither would step aside for/endorse the other. Obasanjo's new hand-picked successor, Umaru Yar'Adua, won.
** Yar'Adua then proceeded to die in office, leaving the presidency to the UnexpectedSuccessor Goodluck Jonathan, who surprised everybody by actually doing a decent job and getting elected in his own right.
* In a more martial Nigerian example, imprisoned Niger Delta rebels like Isaac Boro were released by the government and admitted into the Federal Army to help thwart the Biafran secession. The Niger Deltans figured being minority ethnicities in a Nigeria with 3 mutually hostile major tribes was more palatable than being minority ethnicities in a Biafra with 1 very dominant tribe, the Ibo.
* This trope has reoccurred on a regular basis throughout Canadian history:
** Confederation itself was begun when the Reformer George Brown offered to serve in a coalition government with the Conservative John A. Macdonald to resolve the political gridlock that had paralyzed the United Province of Canada. Their efforts to solve the problem eventually led to the Confederation agreement that founded Canada.
** The colony of Nova Scotia was bitterly divided over whether to join Confederation or not. The question was eventually resolved when the Irish nationalist Fenians, who were trying to gain political leverage with Great Britain by attacking Canada, began raiding the colony from the United States. The pro- and anti-Confederation movements were forced to team up and eventually joined Canada in no small part due to the need for mutual defence against any American raids.
** On the other side of the continent, British Columbia had to deal with the same question. Along with a pro-Confederation movement, the province also had an anti-Confederation movement that wanted to stay independent and an Annexation movement that wanted to join the U.S. As in Nova Scotia, the pro- and anti-Confederates eventually came together.
** During World War I, Canada was extremely bitterly divided over the issue of conscripting men to fight in the war, to say nothing of even participating in the first place. Prime Minister Robert Borden eventually overcame the Liberal opposition by enticing a number of Liberals to join him in a "Union" government that was a glorified coalition, leaving Wilfrid Laurier with a weakened Liberal rump based mostly in Quebec. Laurier's death in 1917 further crippled the Liberals' attempts to recover.
** In the constitutional debates of the early 1980s, the Quebec separatist Premier Rene Levesque found common cause with seven of the other nine provincial premiers, who came together in opposition to Prime Minister Pierre Trudeau's constitutional reforms. The "Gang of Eight", as it was called, eventually forced Trudeau to put together a compromise that addressed some of their major concerns and eventually became the 1982 constitutional patriation.
* This happens a lot on Internet debates about religion. Christian fundamentalists, atheists, and New Agers are all opposed to each other, yet in debates on religion, either the atheists will team up with the New Agers against the Christians, (as they think that fundamentalist Christianity is irrational) or the Christians will team up with the New Agers against the atheists (because they believe that atheists are against spirituality). For some reason, the Christians and atheists never team up against the New Age movement. This is generally because there just aren't enough things that New Agers do that atheists oppose that fundamentalist Christians also don't do, so there's a lack of common ground between atheists and fundamentalist Christians.
** The reason, arguably, is that Christians are, generally, fairly ambivalent towards the New Age movement because seems fairly non-threatening and borrows from Christianity (angels, etc), and, while atheists are generally against spirituality, they may feel they have common ground with the new-age movement as its practitioners are also a minority, something that can lead them to see the New Agers as allies, or, at least, as people less opposed to their ideology than mainstream Christianity, which a lot of them [[FoeYay kinda hate]] in a big way.
*** There is room for a Christian-Atheist alliance against new-agers. Both believe in a rule-following, relatively objective universe. Or they might think the New Agers are nuts. But this alliance is very rarely seen.
* The Westboro Baptist Church, aka the "God hates Fags" church, headed by 'Reverend' Fred Phelps, has managed to piss off ''absolutely everyone''. Their anti-gay protests drew plenty of condemnation from both the left and right, but even the most anti-gay social conseratives were shocked by their picketing of the funerals of soldiers with signs like "God killed your children". They even got denounced by the ''Ku Klux Klan''. How low can you get?
** They even got ''The KKK and the Hell's Angels themselves'' working hand-in-hand with law enforcement officers and firefighters to protect the funerals of the Sandy Hook victims from this kind of nonsense ''and Anonymous doxing the whole flock'' simply for trying to protest at ''those'' funerals.
** When WBC head Fred Phelps died in 2014, Creator/GeorgeTakei declared that the most appropriate thing to do would be to give sincere condolences to Phelps' surviving family and congregation rather than [[NotSoDifferent protesting his funeral in retaliation]]. This course of action was echoed by a massive number of conservative Christian individuals and organizations who otherwise wouldn't find themselves in agreement with Takei on most issues.
* National Voluntary Organizations Active in Disaster is a group of a number of organizations that are active in various facets of disaster response. The catch? Many are religious organizations from varying theological perspectives. Catholics respond alongside Protestants. Jews respond with Muslims. So do Hindus, Buddhists and the Scientologists. And- miraculously- it all works out! http://www.nvoad.org/
* The alliance between the [[UsefulNotes/LEtatCestMoi Kingdom of France]] and the [[UsefulNotes/TurksWithTroops Sublime Ottoman Porte]]; it was one of the first major alliances between a Christian and a Muslim state, directed against the [[UsefulNotes/TheSoundOfMartialMusic Habsburg Empire]].
** And then again between Catholic France and Protestant Sweden during the UsefulNotes/ThirtyYearsWar; once again to limit the Habsburg power. Cardinal Richelieu practically invented realpolitik. Sweden also was for a short time allied with its ArchEnemy Denmark-Norway during the war...but then Denmark-Norway allied with the Habsburgs in the late part of the war.
* You might not expect Republicans like UsefulNotes/RonPaul and the Tea Party movement to have common cause with progressive Democrats, but they've found themselves on the same side in [[http://www.tradereform.org/2011/05/trade-deals-unite-left-and-right-in-opposition/ opposition to free trade deals and continental integration]]. The Tea Party and its supporters see these trade deals as a threat to the sovereignty of the United States and government interference in international trade (many Tea Partiers would prefer to simply have no rules or regulations on trade at all), while their progressive allies see the trade deals as leading to jobs being offshored and labour standards being weakened in America itself.
** The sovereignty issue is a sticking point for many left-wing nationalists in Canada as well. The progressive Council of Canadians has found itself on the same side as right-wing border groups like the American Minutemen, both of whom see continental integration as a threat to their countries' sovereignty.
** UsefulNotes/RonPaul and a number of Tea Partiers have also found common ground with the left-wing Occupy Wall Street, particularly over corporate welfare, Wall Street bailouts, foreign wars, marijuana legalization, and mass surveillance.
** Most recently, there are those on both the left and right side of American politics that have united in opposition of President Obama's use of drones in warfare, particularly his failure to rule out using them on Americans ''on American soil!''[[note]]Of course, nobody remembers that the "on American soil" bit was limited by the caveat "...to take pictures." Creepy, but not DeathFromAbove.[[/note]]
** Has happened again in December 2014, with the passing of the "[=CRomnibus=] Spending Bill"[[note]] the name is slang for "Continuing Resoulution[=/=]Omnibus"[[/note]], when Conservatives and Liberals united against the Democrat and Republican party leaders in power, namely President Obama for the Democrats, and House Speaker John Boehner and Senate Minority Leader Mitch [=McConnel=] for the Republicans. The Liberals, led by Congresswomen Elizabeth Warren and House Minority Leader Nancy Pelosi were angry at the bills benefits and earmark spending to big money donors, especially in removing restrictions on political donations. Conservatives, led by Congressmen Ted Cruz and Mike Lee likewise were also angry at the Republican party for immediately going back on their promises to the conservative base, promises which the Republican party had just made to win the 2014 mid-term elections in November, rather than the base which came out to vote for them, as well as failing to challenge President Obama on several of his executive orders.
* In street demonstrations against Israel, the crowd will often include fundamentalist Muslims, anarchists, neo-Nazis, ultraliberals, and anti-Zionist Hassidic Jews who believe the Messiah must come before Jews return to Israel.
** Israel supporters also do this. In this case, it's Evangelical Christians teaming up with Right-wing Israelis against the predominately Muslim Palestinians. Ironically, [[http://en.wikipedia.org/wiki/Palestinian_Christians there's a sizable Christian population in the Palestinian Territories]].
** It is interesting that on the old Israel Insider website - a ''very'' partisan propaganda site for Israeli expansionism - many comment pieces were written by Northern Irish Unionists/Loyalists, including a regular commentator known for his association with extremist Loyalist factions. The particular loyalist grouping this commentator was associated with had strong links to far-right groupings such as Column 88 and the National Front, organisations hitherto not renowned for being pro-Jewish or sympathetic to Israel. The reasoning appeared to be both parties involved drawing parellels to a terrorist threat (the IRA/Hamas) drawn from a subject population who knew no better than blind hatred and violence towards their neighbours who were treating them with nothing other than forbearance and kindly understanding, despite all provocations. What Israelis or Ulster loyalists might have done to alienate and disaffect their neighbours was never spoken of, but the strong implication was that the two terrorist groupings were working together as a threat to world civilisation.
* UsefulNotes/RonaldReagan seemed to be a fan of this trope, and in fact saw it as a potential avenue toward world peace. He once made a speech in which he wondered how much better the world would be if [[AlienInvasion space aliens invaded]], thus forcing the US and [[UsefulNotes/SovietRussiaUkraineAndSoOn the Soviet Union]] to put aside their differences and fight the threat together. He felt this would remind both sides of their shared humanity, and lead to an end to human conflict. Lest you think he was joking, he actually brought up this scenario in ''several'' speeches, including one to the general assembly of the UsefulNotes/UnitedNations.
* Another great example from history is the Catholics and the Protestants for teaming up against the Anabaptists. In the end they took back the city of Munster and then called it a day for their alliance and begin to promptly fight one another again.
* Prominent religious conservatives and liberal disability rights groups have teamed up several times to fight the legalization of assisted suicide. They were also on the same side during the Terri Schiavo debacle.
* Following the passage of Proposition 8 (which outlawed same-sex marriage in California), Several families sued the state on the grounds that the referendum was unconstitutional. The attorneys who teamed up to represent them in court were Theodore Olsen and David Boies, best known for arguing opposing sides of ''Bush v. Gore''. Needless to say, the Defendants [[CurbStompBattle didn't stand a chance.]]
* The pro-life movement includes numerous groups arguing from different angles, many of whom wouldn't usually agree with the religious conservatives traditionally associated with the movement. Staunch atheists, self-styled liberals, American Democrats and feminists of various kinds have all been known to team up with them.
* Jane Hamsher, creator of the liberal blog Firedoglake and Grover Norquist, conservative kingmaker, teamed up in 2010 to oppose the Affordable Healthcare Act. The conservative argument was that it was big-government socialism, while liberals believed that it didn't go far enough.
* Likewise, the Don't Ask, Don't Tell policy received criticism from both the left ''and'' the right in American politics during its height. Many left-wing LGBT-rights activists opposed the policy because they believed that it wasn't inclusive enough towards LGBT people, while right-wing LGBT-rights opponents thought it was ''too'' inclusive.
* Hunters and animal-rights activists may not always see eye to eye, but they will team up to oppose development projects and save endangered species.
** They'll also unite on [[KillEmAll culling an invasive species]] (with [[http://en.wikipedia.org/wiki/Razorback#21st_century North-American Razorbacks]] providing a good example). Yes, "[[WesternAnimation/SouthPark Thin out their numbers]]!" is actually a valid argument.
* In issues involving the Separation of Church and State in the U.S., atheist groups and religious groups do team up. Some Christians don't like government being linked to their religion, the Jews, Muslims, Buddhists, and other groups don't like Christianity being endorsed by the government, and atheists don't want any religion endorsed by the government. The group Americans United for Separation of Church and State is an example of this. Another good example is the opposition to Amendment 8 in Florida, an amendment to allow the state treasury to be used to support churches and religious institutions. One of the more prominent opposing voices is a Rabbi.
* In the midst of the 2012 Chick-fil-A gay marriage controversy, Chick-fil-A's supporters (during the "Chick-fil-A Appreciation Day") and its protesters (including the "kiss-in" folks) joined in condemning the mayors of Boston, Chicago, and Philadelphia for comments indicating that they would work to block the fast food company's plans to open restaurants in their cities. Both sides of the issue maintained that you can agree or disagree with the company's stance all you want and protest one way or the other accordingly, but to dictate that someone cannot operate a business somewhere because of their views would be an infringement upon free speech and free markets.
* Despite their obvious theological differences, Catholics and Protestants often team up to oppose abortion.
* Opposition to UsefulNotes/BarackObama's efforts to enact military action against Bashar al-Assad for using chemical weapons against Syrian civilians came to be made up of Tea Party Republicans, anti-war Democrats, and numerous other constituents of both parties. On the flip side, President Obama got some support from people who don't tend to agree with him on most other issues (e.g. John [=McCain=] and [[Series/TheOreillyFactor Bill O'Reilly]]).
** This all fell apart though when Obama leapt on Russia's offer to help get rid of Syria's chemical weapons. The anti-war Democrats and non-interventionist Republicans were cool with this, as were many Democrats who had favored military action (since it was a way of ending the chemical weapons issue without fighting), but the pro-war Republicans were more than skeptical and the Tea Partiers shared in the skepticism of Russia's intentions and were opposed to the existence of any US role (also: it made the UN look useful. Tea Party hates that).
* The whole NSA scandal has produced some really strange alliances. The anti-Snowden camp has UsefulNotes/BarackObama, John Boehner, Michele Bachmann, Nancy Pelosi, UsefulNotes/HillaryRodhamClinton, Dick Cheney, UsefulNotes/GeorgeWBush, John [=McCain=], and Creator/AlFranken. Meanwhile, the pro-Snowden camp contains AlGore, UsefulNotes/SarahPalin, UsefulNotes/RonPaul, Creator/MichaelMoore, and Radio/GlennBeck. And there's also Bill Maher who hasn't seemed to have picked a side yet.
* While it was obviously something that conservatives were angry about, even liberals and other people who dislike SarahPalin were disgusted by Martin Bashir's assertion that she deserved to be subjected to "Derby's dose" (a punishment enacted on African slaves where they were forced to consume feces) for comparing the federal debt to slavery. This was compounded with Bashir's fellow former MSNBC anchor Alec Baldwin alleging a DoubleStandard in the fact that Baldwin was quickly fired for an anti-gay slur he said in an outburst against reporters yet Bashir still had his job after his ''scripted'' offensive comments. Unsurprisingly, Bashir eventually resigned.
* This is how UsefulNotes/{{Sweden}} was founded. Western Geats, Eastern Gaets and Swedes (viking-tribes) teamed up to avoid being conqured by the Danes. To this day their national emblem is [[http://en.wikipedia.org/wiki/Three_Crowns "The Three Crowns".]]
* Despite having very sour relationship between UsefulNotes/{{Israel}} and UsefulNotes/SaudiArabia (since they don't have emissaries to their respective countries) and Saudi support for many Palestinian groups, both countries found themselves to be unlikely allies against a great threat, UsefulNotes/{{Iran}}, due to the concerns of the Iranian nuclear program.
* For the [[http://en.wikipedia.org/wiki/Scottish_independence_referendum,_2014 2014 Scottish referendum on independence]], the "No" camp was dominated by a rare alliance between Labour and the governing parties (the Conservatives and Liberal Democrats). Among the smaller political movements opposed to independence, there was also UKIP, far-left parties and far-right nationalists. Take any combination of the five and you'd find they were bitter enemies. There was some division in the "Yes" camp to, but they managed to coalesce around a vaguely left-wing vision.
** Although in the case of the latter, this trope was still in full effect, as support for independence ranged from Business for Scotland to the Scottish Socialist Party, as well as the mutually hostile SNP and Green Party (the latter temporarily withdrawing at one point in protest at Yes Scotland becoming an "SNP vehicle"). Even some Labour rebels backed an independent Scotland while desperately hoping that the SNP would not be the ones to lead it...
* The Western far-right and far-left seem to really love UsefulNotes/VladimirPutin, almost as much as they hate Israel. Putin's right-wing supporters include social conservatives who admire his stance against the gays, Christian fundamentalists who argue that he's reviving the Russian Orthodox Church while the West continues to become "godless", and anti-EU nationalists. His left-wing supporters include aging old-school communists seemingly defending Russia by force of habit and hardcore anti-imperialists willing to embrace any opponent of American hegemony.
** In addition of admiring Putin in the recent times, both Russian monarchists & communists(which also has conservative moral stance) doesn't take kindly towards liberalism(in a generic sense) for contributing nothing but chaos, undoing centuries of Imperial & Soviet achievements which was later partly restored by Putin. Also, they seem to unite against nationalists of neighboring nations like Ukraine & Chechnya, seeing them as Western tools to weaken Russian hegemony.
* Ultra-nationalist political parties in Europe have had a long tradition of neo-Nazism and anti-Semitism. But since the early 2010s, a number of them have attempted to cosy up to their Israeli counterparts to fight what they perceive to be an Islamic threat to Europe.
* In a truly bizarre case of both this and GoKartingWithBowser, Marcus Garvey (leader of the Back-to-Africa movement) was friends with Earnest Sevier Cox, a vicious white supremacist and eugenicist, and his fellow segregationists. Why? Garvey felt that the only way for black people to be freed from discrimination was to simply start their own country: this was ''great'' for Cox, who believed that miscegenation led to the downfall of civilizations, and that America needed to be completely free of nonwhite influence in order to thrive. Together they collaborated on the repatriation movement, advertising each other's writings and speaking at each other's events. When Garvey was imprisoned, [[PleaseSpareHimMyLiege Cox went to the Secretary of Labor personally to ask him to pardon Garvey]], and even after Garvey was deported, they wrote each other letters and referred to each other fondly in writings. Cox even dedicated a book to him.

!!Sociology
* The [[http://en.wikipedia.org/wiki/Robbers_Cave_Experiment "Robbers' Cave" experiment]]. Two groups of boys at a summer camp were first isolated from each other and encouraged to form a group mentality. After a few days they were introduced to the other group in a competitive environment in order to produce inter-group friction. This stage was ''ended early'' when the hostile rivalry reached potentially dangerous levels. The groups were then given mutual "superordinate goals" forcing them to work together, and the hostility evaporated as quickly as it had appeared.

!!Sports
* Fans of sports teams coming down to the wire on that last playoff spot can find themselves rooting for their most hated rival to win because their rival just happens to play some third team that needs to lose in order for their team to be able to jump ahead of them in the standings. "(''Insert Hated Team Here'') Fan For A Day" signs are not uncommon in the stands in such games.
** A funny example in 2014 FIFA World Cup: Germany defeated the host country, Brazil, for a spectacular 7-1 in one of the semifinals, which was the worst defeat Brazil ever suffered and a traumatic experience for all the fans. At one point the Brazilian fans (those which hadn't left already during the first half) was cheering on the German team. The other semifinal match was Netherlands X Argentina, with the latter winning and making it into the finals against Germany. Nearly ALL Brazilians rooted for Germany, out of spite and fun. And Germany scored 1-0 during additional extra time, thus winning the tournament. Brazilian fans were satisfied, even after losing 3rd place match to Netherlands, just because the arch-rival Argentina was defeated. For those not familiar with soccer, Brazil vs. Argentina is probably the greatest rivalry in the world of soccer - to the point that there is a Cup that only these two national treams dispute! It also helped that this was only the second time Germany and Brazil meet in a World Cup, and the German team won fairly gracefully, toning down the goal celebrations at one point and comforting members of the host team after the game. Plus, loosing so badly is already a disgrace, but loose so badly against team which then doesn't move forward to win the cup can be considered as even worse.
* Heading into the last game of the 2014 [[RugbyUnion Six Nations Championship]], England were to be the champions if France, England's longstanding rivals, won against Ireland. English fans on social media commented on how odd it feels to be cheering on France.
* Such sporting rivalries have given rise to the popular "I support two teams - X, and anyone playing against Y" T-shirt design, with many regional variations.
* There are a couple of football rivalries in Germany, the most famous being the one between Borussia Dortmund and Schalke 04. Those matches are always heated. But there are two moments during which the audience is always in agreement: When the "Steigerlied" is played (a song regularly sung in both arenas to honour the time when the Ruhr Valley was a coal region) and whenever Bayern München is loosing. It's a very common attitude among most football fans in Germany to cheer even for the worst rival as long as Bayern München doesn't get a point.
* All-Star Games in various sports feature this, as players from opposing teams unite to take down players from the other league/conference/whatever.

!!War

* Can probably be applied to the vast majority of wars, including the alliances against UsefulNotes/NapoleonBonaparte during UsefulNotes/TheNapoleonicWars.
* This trope is one of the reasons DrillSergeantNasty exists. Even if 40 people in a platoon can't agree on ANYTHING else, they can always unite around the fact that the sergeant's an ass.

[[AC:Classical Times]]
* During the fifth century BC, [[AncientGreece the Spartans and Athenians]] teamed up to fight the Persians.
* Combine this trope with ApeShallNeverKillApe and you get the basic idea for UsefulNotes/TheCrusades.

[[AC:18 Century]]
* UsefulNotes/TheAmericanRevolution was a classic example of this. France and Spain, mortal rivals and conservative catholic near-absolute monarchies, joined forces with British protestant republican rebels and were funded by the protestant and deeply anti-Spanish Dutch Republic. It was deeply ironic when radical republican ideology flourished across Atlantic a couple of decades later and (sorta) took down all three countries.

[[AC:19th Century]]
* Napoleon's regime is an example of this in an ideology. Napoleon was a veteran of the French Republic's military, his government used the republican flag and he claimed to embody the ideals the republic had represented and yet his government was unashamedly an absolute monarchy with Napoleon not shirking even slightly from the trappings of royalism (see, for example, the painting of his coronation).
* In the WarOfTheTripleAlliance, Brazil and Argentina, who had long been antagonistic towards one another, went to war against Paraguay. They were joined by Uruguay, which was basically their punching bag.

[[AC:World War I]]
* During UsefulNotes/WorldWarOne, the conservative monarchist German government helped the radical UsefulNotes/VladimirLenin return to Russia so that he could overthrow the government and make peace with the Central Powers.
* The parliamentary democracy of France forged an an alliance (the Entente Cordiale) with autocratic Czarist Russia, and later democratic Britain, against semi-democratic Imperial Germany and Austria-Hungary. When the U.S. was thinking of entering the war, Russia's February Revolution happened and the Wilson administration welcomed the development as removing the last obstacle to a "democracy vs. dictatorship" narrative.

[[AC:World War II]]
* This happened ''a lot'' during UsefulNotes/WorldWarII:
** Jiang Jieshi (Yangzi river region), the Guangxi Clique (Pearl river region), Yan Xishan (Shanxi province), Long Yun (Yunnan province), Mao Zedong (Sha'anxi province), Sheng Shicai (Xinjiang province), and several dozen less powerful warlords called time out and fought the occupying Japanese together. All sides were frantically trying to ensure their 'allies' [[LetsYouAndHimFight took the majority of the casualties]].
** The Soviets and Nazis declared a nonaggression pact, though both considered it merely a stalling action before war broke out. Germany wanted the USSR out of the way so that they could defeat Britain and then attack the USSR because they wanted to avoid a two-front war. The USSR wanted to wait as long as possible so that they could get their factories and army up to full capacity. Obviously Germany never took Britain and attacked the USSR before they were entirely ready (and also allowed itself to get sidetracked by a mission to clean up the mess Mussolini had made in the Balkans), thus causing a two-front war anyway.
** The United States, United Kingdom, China, and the Soviet Union worked side by side to defeat Germany, Japan, and Italy
** WinstonChurchill was a staunch anti-Communist, but he promised help to the Soviet Union immediately after Hitler attacked it. He once said, "If Hitler invaded Hell I would make at least a favorable reference to the devil in the House of Commons."
** Various people classified as sub-humans by the Nazis, such as Slavs, Chechens and Indians, teamed up with the Nazis against a common enemy (the Soviet Union for Chechens, Britain for Indians). Many Slavic people actually served in the Wehrmacht itself.
** During the Battle of Britain, the British and Irish governments put together a joint plan, [[http://en.wikipedia.org/wiki/Plan_W Plan W]], for the defense of neutral Ireland against German invasion. One effect of this plan was the Irish military trading in their uniforms (which resembled those of the Germans) for new ones more closely resembling those of the Brits, to avoid spooking jumpy British troops from [[FriendOrFoe shooting at the wrong people.]]
** At one point Italy switched sides, giving birth to multiple cases of this: the Italian government was on the same side as the Allies, who were the enemy until ''literally the day before'', due to German troops seizing control of most of the country; in German-occupied territories, LaResistance was divided into four factions (Monarchists, Republicans, Communists and Anarchists), with each faction loathing the others but agreeing to collaborate and settle things peacefully after the war and Germany's defeat and king Vittorio Emanuele III (detested for allowing Mussolini's takeover and abandoning Rome and the armed forces without orders right after announcing the surrender to the Allies, even before the Germans moved to take over); and the ''[[MyCountryRightOrWrong Italian]]'' Resistance occasionally collaborated with the ''Italian'' Fascists (allied with the Germans) against the ''Yugoslav'' Partisans to try and defend the Italian population in Istria (a border area inhabited by both Italians and Yugoslavs, where Mussolini's government started throwing Yugoslav civilians into camps and the Yugoslav Resistance had recently started doing the same to the Italians); and the Communist faction of the Italian Resistance would occasionally collaborate with the Yugoslav Partisans against the Monarchists.
** The Italians (Benny the Moose himself included) were actually pretty anti-German and anti-Hitler prior to the late 1930s. In fact, the British and French joined Mussolini's Italy in the Stresa Front, an agreement to uphold the independence of Austria and prevent any further breaking of the Treaty of Versailles. Mussolini himself referred to Hitler as a "mad little clown." However, the second Italy invaded Ethiopia, the British and French lost what little friendliness with Mussolini they had and took steps to isolate his country. (Most of their measures, including a toothless embargo on weapons sales, didn't work.) Without any friends, Mussolini and his Fascists were forced to cozy up to Hitler and the Third Reich. (That was a fatal mistake.) This may have contributed to the stereotype of the Italian forces being cowardly, when actually they were merely chronically unmotivated to fight. If the people you've just been ordered to kill are the people who were your allies last week, dropping your rifle and just getting the hell away from all this madness is not at all an unreasonable response.
** Five days before the death of Adolf Hitler The Battle for Castle Itter was fought. Dubbed the strangest battle of World War II; 14 American soldiers, two Sherman Tanks, French and Eastern European prisoners, Austrian Resistance, as well as ten anti-nazi Wehrmacht soldiers and one Waffen-SS man teamed up together to drive elements of the 17th Waffen-SS Panzer Division from setting up a stronghold in the castle. Notable prisoners included tennis star Jean Borotra, former prime minister Édouard Daladier, Charles de Gaulle's elder sister Marie-Agnès Cailliau, former commander-in-chief Maxime Weygand, former prime minister Paul Reynaud, former commander-in-chief Maurice Gamelin,right-wing leader François de La Rocque and trade union leader Léon Jouhaux. Besides the French VIP prisoners, the Castle held a number of Eastern European prisoners detached from Dachau. Major Gangl of the Wehrmacht managed to get a a call out to a friend who owed him a favour and a group of Austrian resistance men as well as several more Wehrmacht men joined in the American/German/French/Austrian defense. Together they drove off the Waffen-SS until they were relieved by approaching US 142th Infantry Division.
** Germany and Japan's alliance became more complicated later on, but it began with their shared opposition to the Soviet Union and to communism in general. And it was strengthened once Germany was at war with the same European countries who had Asian colonies wanted by Japan. Germany helped Japan by keeping the European colonial powers busy with a war on their home fronts, making it very difficult or impossible for them to prop up their colonies against Japanese attack. Japan helped Germany by keeping busy a certain number of British, Commonwealth, and American forces who would otherwise be fighting Germany. However the Japanese army ruled out invading the Soviet Union in July 1941, the lackluster performance of Operation Barbarossa confirming their earlier assessments about Soviet strength, thereby ruining German hopes of crushing Russia in a two-front war.
** The America First Committee, which opposed U.S. entry into World War II, was an odd alliance of right-wing isolationists, left-wing pacifists, FDR haters, Nazi sympathizers, pro-Soviet communists (until Operation Barbarossa), anti-Semites, and Anglophobes. All together, the movement's goals coalesced into a vaguely right-wing vision.


[[AC:Cold War]]
* During the UsefulNotes/ColdWar, this was practically official policy for both sides.
** In an ideological level [[CallBack Fascism and capitalism]] joined together (or more accurately, [[TheManBehindTheMan Capitalism put in fascism]]) in Latin America against the Communist threat. An exact opposite of what took place in WWII: Communism and Capitalism vs Fascism.
** During and immediately after World War II, anti-Japanese sentiment was very strong in America. All that was forgotten when the U.S. jumped at the chance to make Japan a capitalist ally against the People's Republic of China, North Korea, and the eastern part of the Soviet Union.
** Under Stalin, the Soviet Union had regarded all non-communist countries as enemies, but Khrushchev began a policy whereby any left-wing or anti-western regime in the third world could be regarded as a potential ally.
** The U.S. even went so far as to support anti-Soviet communist regimes, such as Yugoslavia and (eventually) the People's Republic of China.
** The Suez Crisis was a weird aberration when both the U.S. and U.S.S.R. took a hardline stance against the intervention into Egypt and both put pressure on Britain, France, and Israel to pull out. This created an instance where the U.S. voted with the Soviet Union and against its NATO allies at the United Nations. And this was at the same time that the U.S. was vehemently condemning the Soviets for crushing the Hungarian Revolution too!
** The UsefulNotes/SovietInvasionOfAfghanistan united pretty much every country which wasn't in the Soviet bloc. The U.S. and the other western capitalist powers immediately decided that the people fighting Russians were the good guys. Muslim countries also backed the Afghan resistance, seeing it as a religious war between Islam and godless communism. Even communist China decided to support the Afghan rebels.
** Despite the Sino-Soviet split, China and the Soviet Union worked together to support the communist forces in UsefulNotes/TheVietnamWar. Once the common enemy was eliminated, however, Vietnam became a Soviet sphere of influence and spent the rest of the Cold War having border skirmishes with a now hostile China.
** In neighboring Cambodia, the Khmer Rouge forged an alliance with Vietnam in order to oppose America. As the Americans began to withdraw from Indochina, Cambodia's (largely justified) fears of Vietnamese ambitions in the region grew, causing them to purge Vietnamese-trained personnel in their military and launch multiple border raids against Vietnamese positions, which in turn prompted Vietnamese reprisals. This led to the slightly-surreal situation in which both governments were outwardly professing their undying friendship and unity even as their respective military forces fought on the ground, and ultimately culminated in the Vietnamese launching a full invasion of Cambodia to oust the pro-Chinese Khmer Rouge and replace them with a pro-Soviet, pro-Vietnam People's Republic. Finally, for extra irony points in the wake of the invasion, Khmer Rouge immediately turned from the violent and brutal bugbears of Kampuchea and neighboring Thailand into the honored guests of the anti-Communist alliance ASEAN in Thailand's capital of Bangkok, allies of the conservative monarch Sihanouk who the Khmer Rouge had deposed a second time in 1976 (the first being in 1970 by the Khmer Republic), and friends of the United States and Australia.
* The Iranian Revolution brought together (for a brief period of time) leftists, communists, and fundamental Islamists.
** Also during the UsefulNotes/IranIraqWar, Iran received a great deal of weapons and aid from Israel, because both countries considered UsefulNotes/SaddamHussein a far greater enemy (Hussein in fact disseminated a notorious pamphlet written by his father-in-law titled "[[http://en.wikipedia.org/wiki/Three_Whom_God_Should_Not_Have_Created:_Persians,_Jews,_and_Flies Three Whom God Should Not Have Created: Persians, Jews, and Flies]]"). Historian Trita Parsi has also claimed that Israel's bombing of Iraq's nuclear facility at Osirak was assisted by Iranian intelligence, but Iran officially denies this. On the Iraqi side, the U.S., Soviet Union, gulf countries, and a variety of other countries, all gave more support to Iraq than Iran.

[[AC:Post-Cold War]]
* This tendency was also repeated again in the African countries of Chad and Somalia, when the warring forces teamed up to kick out the foreign invaders. In Chad's case, the government and rebel forces united to fight the invading forces of Libya, while the Somalis temporarily put their civil war on hold to kick out the United Nations force sent to restore order after the collapse of the dictatorship, before they returned to fighting among themselves.
* The [[RuthlessModernPirates ongoing problem of piracy]] near the coast of Somalia has occasionally forced the naval forces of countries that would otherwise be enemies to invoke this trope by fighting together in skirmishes against the Somali pirates. A notable example of this was seen when the crew of the American USS ''James E. Williams'' fought alongside North Korean sailors to defeat pirates who had captured a North Korean cargo ship in late 2007.
* Recently, the Ukrainian crisis is chock-full of this. Before Yanukovich stepped down, Euromaidan protesters range from pro-Western liberals & human rights activists to far-right ultranationalists not averse with [[PuttingOnTheReich Nazi symbolism]], later the aforementioned ultranationalists forming "national guard" battalions fighting pro-Russian insurgents consisting of Ukrainian army/police deserters, Communists, Tsarist nationalists, Cossacks, and even western & (non-radical) Muslim volunteers, among others.

[[AC:War on Terror]]
* The [[http://en.wikipedia.org/wiki/2001_uprising_in_Herat 2001 uprising in Herat]] for the US and Iran against the Taliban.
* Though they have yet to actually team up in a war, the Kurds and the Armenians, formerly bitter rivals, actually have somewhat friendly relations now that the Kurds and the Turks are enemies. A representative of the Independent Kurdistan movement even apologized for all Kurdish involvement in the Armenian genocide.
** The best part is that the atrocities were done mainly by ethnic Kurds, not ethnic Turks. Which makes sense, since they live next to each other.
* The [[TheWarOnTerror September 11 attacks]] brought a few of these out of the woodwork, as governments who aren't exactly known for their fondness of the American government condemned the attacks and the terrorism that caused them. Among these governments? ''Iran, North Korea and the Taliban''. (At least officially.)
* Today, with ISIS terrorizing Iraq, a very odd alliance has cropped up with [[YanksWithTanks American airpower]] working alongside [[https://medium.com/war-is-boring/iran-sends-tanks-into-iraq-to-fight-islamists-d130c9fa58bb Iranian tanks]], both coordinating with [[LaResistance Kurdish rebels]]- the same people Iran had been fighting in their own northern territories before. ISIS seems to be EvilerThanThou from Iran's perspective, and the U.S.A. just doesn't want ISIS to win. Also, the Russians (which has a tense relationship with the Western world since 2014) provided Iraq & Assad's Syria with fighter jets & other supplies, by September 2015 Russia puts their boots on the ground in support of the Assad government, and there are earlier reports of Russian volunteers among the Kurdish resistance.
** In fact, ISIS may be a major modern example - most charts and graphs you can find on the web suggest they're pretty much enemies with everyone else in the Middle East, not to say the world at large. (For reference, Indonesia, the country housing the world's largest amount of Muslims, staunchly condemns them.) [[EvenEvilHasStandards Even]] some branches of ''Al Qaida'' now condemn their actions - though in their case, it's more because they feel ISIS' intractable behavior does more harm than good to the islamic cause than because of their ideology, because they supported them before. Even then, if there's only one thing in ISIS' favour, it's the [[WeAreStrugglingTogether fractiousness of its opponents]] and [[GambitPileup colliding vested interests]], which could be best summed up [[http://www.slate.com/blogs/the_world_/2014/07/17/the_middle_east_friendship_chart.html by this chart]]. [[http://thinkprogress.org/world/2014/06/12/3447800/iraq-syria-chart/ And this chart]].
** In the early stages of the civil war, Al-Qaeda backed Islamists were this to secular factions like the Free Syrian Army. Despite their intense and mutual disdain for one another, both sides shared a common goal in getting rid of Assad. The beleaguered and poorly-armed FSA came to value these Islamist extremists as shock troops, until ideological disagreements inevitably tore apart the fragile alliance.
** Several former American & British special forces operators & members of the [[RightWingMilitiaFanatic militia movement]] volunteered to fight alongside the predominantly ''communist'' Kurdish resistance. Cue many American right-wing patriots cheering these fighters.
** Averted with one group of Houthi rebels in Yemin, according to ''[[Creator/{{HBO}} VICE]]'': Their segment was titled "The Enemy of My Enemy" (is still my enemy) and they hate America as much as they hate ISIS.
----
[[/folder]]
EnemyMine/RealLife
[[/index]]
6th Mar '16 9:46:33 AM Knight20
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[[index]]
* EnemyMine/AnimatedFilms
* EnemyMine/AnimeAndManga
* EnemyMine/ComicBooks
* EnemyMine/FanWorks

[[/index]]



[[folder:Film]]
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* In the first ''Film/AlienVsPredator'' film, the humans end up helping the preds kill xenomorphs by bringing them their ancient weapons.
* In ''Film/AssaultOnPrecinct131976'' and [[Film/AssaultOnPrecinct132005 its remake]], the remaining personnel of a soon to be shut down police station must put their trust on criminals within it to fight worse criminals laying siege on the place.
* ''Film/BladeII'':
** Blade teams up with the vampires to fight a subspecies of super-vampires that prey on everyone. The vampires end up betraying Blade two-thirds of the way through the movie. Nomak (the lead super-vamp) points out the trope: "Is the enemy of my enemy my friend? Or my enemy?"
--> '''Scud''': So B-man, what do you think?
--> '''Blade''': Sounds like a plan.
--> '''Whistler''': What do you really think?
--> '''Blade''': They're gonna fuck us the first chance they get.
** Also demonstrated during the helicopter flight to the vampire HQ, when Nyssa seems disappointed with Blade over how easily he allows himself to be taken to a place where he may become a prisoner. Scud convinces Blade to show Nyssa his vest made of Semtex, enough to level a city block. Nyssa looks impressed.
* In ''Film/DickTracy'', Tracy considers this trope when deciding whether to accept The Blank's help in defeating Big Boy. Instead, he finally realizes "The enemy of my enemy is my enemy."
* This is what prompts the partnership between Wikus and Christopher in ''Film/{{District 9}}''. [[spoiler:Christopher has spent 20 years collecting enough [[GreenRocks fluid]] to power the aliens' buried shuttle so he can take the mothership and get help, but just as he gets the last of it, his shack is searched by [[MiddleManagementMook Wikus]], who accidentally inhales some of the fluid and starts [[BodyHorror transforming into an alien]]. On the run from his own [[MegaCorp company]], Wikus teams up with Christopher to get the fluid back from MNU, on the condition that Christopher change Wikus back into a human. It doesn't really [[BittersweetEnding work out that way]], but by then Wikus has had enough CharacterDevelopment to be okay with it.]]
* The Sci-Fi movie ''Film/EnemyMine'' (1985) (directed by Wolfgang Petersen), starring Dennis Quaid as a human space marine and Louis Gossett Jr. as an alien soldier. In the midst of an interstellar war between their species, both crash-landed their vessels on a desolate planet and must work together to survive. Years later, after the alien soldier gave birth to a baby alien and died from complications, Dennis Quaid's character raises his adoptive alien son and must protect him and himself from human scavengers who use captured aliens as slaves, until they're both finally found and rescued. It is implied that this event helps to end the war.
* Creator/WillSmith's character in ''Film/EnemyOfTheState'' pulls an on-the-fly BatmanGambit which ties up two troublesome loose ends by getting them to deal with each other. Through some fast talking and well chosen ambiguous language, he [[spoiler: sets up a MexicanStandOff between a rogue NSA team that has taken him hostage and a gang of trigger happy goodfellas who are looking for a fight.]] It does not end well for any of them.
* ''Film/FantasticFourRiseOfTheSilverSurfer'' has the titular team teaming up with Dr. Doom to get the Silver Surfer. Eventually the Fantastic Four team up with the Surfer [[spoiler: after Doom betrays them and takes the Surfer's board for himself. And probably after to prevent Galactus from destroying Earth.]]
* [[spoiler:Storm Shadow]] teams up with the Joes in ''Film/GIJoeRetaliation''.
* ''Franchise/{{Godzilla}}'':
** Mothra convinces her enemies Godzilla and Rodan to stop Ghidorah in ''Film/GhidorahTheThreeHeadedMonster''.
** Battra and Mothra, mortal enemies of one another, joined forces in order to stop Godzilla in ''Film/GodzillaAndMothraTheBattleForEarth''.
** In ''Film/GodzillaVsMechagodzillaII'', Godzilla and Rodan start off fighting for the unhatched egg on Adona Island, Godzilla because it's a Godzillasaurus egg, Rodan because the egg's presence in the nest he had hatched in made the infant his surrogate brother. When the UNGCC eventually decide to use the newly-hatched Godzilla Jr. to lure Godzilla into a fight with Mechagodzilla, the two monsters get mortally wounded, and Rodan sacrifices what little life he has left to revive Godzilla.
** In ''Film/GodzillaVsSpaceGodzilla'', M.O.G.U.E.R.A. is built as yet another anti-Godzilla machine. But when [=SpaceGodzilla=] lands in Fukuoka and starts growing a large mass of crystal across the surface of the city, the M.O.G.U.E.R.A. team ends up having to work with Godzilla to bring down the extraterrestrial invader. This trope is especially applicable for Akira Yuki, the M.O.G.U.E.R.A. captain who had been working to kill Godzilla as revenge for the monster killing his best friend Goro Gondo in ''Film/GodzillaVsBiollante''.
** In ''Film/{{Godzilla 2014}}'', the prologue deals with how MONARCH and the military tried to kill Godzilla in TheFifties with nuclear "tests" in the Pacific. When the M.U.T.O.s awaken decades later and Godzilla starts going after them, Admiral Stenz enacts a plan to kill all three monsters with an even bigger bomb. But the M.U.T.O.s [[spoiler:steal the bomb and use it to feed their nest]]. This foul-up convinces Stenz to accept Dr. Serizawa's suggestion that they ought to leave all the heavy work to Godzilla.\\\
Godzilla refuses to attack the military (who attack him on occasion) because they are opposed to the [=MUTOs=]. It helps, though, that it's quite quickly established that the military is effectively no threat to either of them.
* The first half of ''Film/TheGoodTheBadAndTheUgly'' is a slowly-escalating buildup of hatred between Blondie and Tuco to the point where they're inches from clawing out each others' eyes. Then Tuco learns the location of a graveyard where gold is hidden, Blondie learns the name on the grave where the gold is buried, and they're forced to work together, later uniting against Angel Eyes after he learns Tuco's half of the secret.
* ''Film/HellInThePacific'', about an American and a Japanese soldier trapped on an island together, and which inspired the film in the previous entry, natch.
* This is the whole premise behind ''Film/IndependenceDay''.
* ''Film/JurassicWorld''; [[RaptorAttack Blue]] teams up with [[TyrannosaurusRex Mama Rex]] to battle the ''[[BigBad Indominus Rex]]'' (Given the [[Film/JurassicPark the last time]] these two species met they tried to kill each other, this is a marked improvement)
* French horror film ''LaHorde'' is about a group of cops and criminals joining forces against a horde of zombies. A particularly tense situation because the cops were searching revenge against the gangsters that killed a colleague.
* The film ''Film/{{Krull}}'' begins with this, as two rival kingdoms arrange a political marriage to unify them against the alien invasion. [[spoiler: Sadly, it does them little good as the highly advanced Slayers storm the castle and kill everybody except for the heroic prince and his future bride, who is taken by the invaders.]]
* The main premise of ''Film/TheLeagueOfExtraordinaryGentlemen''.
* ''Franchise/MarvelCinematicUniverse'':
** ''Film/ThorTheDarkWorld''; Thor reluctantly teams up with Loki, as his knowledge of magic and his trip through the other realms in ''Film/{{The Avengers|2012}}'' makes him adept at tracking Malekith and his forces.
** In ''Film/AvengersAgeOfUltron'', Ultron persuades Quicksilver and Scarlet Witch to join him in an alliance, through their mutual hatred of the Avengers. Likewise, they eventually decide to ditch Ultron after seeing just how dangerous he is and team up with the Avengers, even though they aren't on good terms with Tony Stark.
* ''Film/TheMatrixRevolutions''. Neo and the Machines must work together to destroy Smith before he takes over both the Matrix and the Machine World. [[spoiler:After Neo allows Smith to possess him, the Machines use their power through Neo's body to destroy all of the Smith clones.]]
* In the climax of ''Film/MeanGirls'' 2, Jo's former friends decide they hate Mandi more than they hate her and agree to help her.
* Kind of lampshaded in ''[[Film/OceansEleven Ocean's Thirteen]]'', when they decide to include Benedict in their plan:
-->'''Linus:''' We've shaken every tree...\\
'''Rusty:''' I really wanted to avoid it this time...
* In ''Film/OnceUponATexasTrain'', the retired outlaws and the retired Rangers are forced to combine forces to combat a gang of younger, more ruthless outlaws.
* In the ''Film/PiratesOfTheCaribbean'' franchise, every character views the others as either enemies or [[GoodIsDumb incredibly stupid]] pawns, but will readily concede to work together when their priorities mesh. These unholy alliances tend to confuse casual viewers, who are convinced (''très'' incorrectly) that the adversarial role Barbossa plays in the first film completely contradicts the compatriot role he plays in the third.
* Mentioned in ''Film/{{Predators}}'' when Royce tells Isabelle that he intends to free the captured Predator and use that momentary trust to have him find the predator's ship and escape. Isabelle then adds:
--> '''Royce:''' The enemy of my enemy...
--> '''Isabelle:''' That doesn't make it a friend.
* A very short alliance happens in ''Film/RaidersOfTheLostArk'', when Indy and a mook are struggling over control of a gun, when [[TheDragon Toht]] says "Shoot them -- shoot them both", and suddenly Indy and the mook cooperate to shoot the other mook pointing a machine gun at them.
* In the end of ''Film/ResidentEvil Retribution'', Alice has to work with [[spoiler:Albert Wesker]] to ensure the survival of the last of humanity against the [[spoiler:Red Queen]].
* In a PlayedForLaughs moment from ''Film/TheRocketeer'', it's [[NeighbourhoodFriendlyGangsters gangsters]] siding with the police vs. [[ThoseWackyNazis Nazis]]. They may be crooks, but they're ''American'' crooks. And, yes, there's a [[StupidJetpackHitler jetpack]] involved.
* Balthazar and Mathayas resort to this in ''Film/TheScorpionKing'' in order to take down Emperor Memmon.
* ''ShakespeareInLove'': When the Master of the Revels orders the Rose Theater closed indefinitely, thus preventing Shakespeare and company from premiering ''RomeoAndJuliet'', Richard Burbage, owner of rival theater The Curtain, makes a peace offering, saying that they should stand together against their common enemy:
-->"The Master of the Revels despises us all for vagrants and peddlers of bombast. But my father, James Burbage, had the first license to make a company of players from Her Majesty; and he drew from poets the literature of the age. We must show them that we are men of parts. Will Shakespeare has a play. I have a theater. [[CrowningMomentOfHeartwarming The Curtain is yours.]]"
* In ''Film/{{Spectre}}'', Bond and [[spoiler:Mr White]] decide to both go after Oberhauser, and try and protect the former's daughter. Though at the end of the meeting [[spoiler:White]] kills himself. Bond still considers the alliance valid, however, and does pursue the daughter.
* In ''Film/StarTrekIntoDarkness'', Harrison and Kirk temporarily team up [[spoiler:to board and disable the ''Vengeance'']].
-->'''Kirk:''' [[DiscussedTrope The enemy of my enemy is my friend]].
-->'''Spock:''' [[DiscussedTrope An Arabic proverb]] attributed to a prince who was [[AnalogyBackfire betrayed and decapitated by his own subjects]].
-->'''Kirk:''' [[LameComeback Well, it's still a hell of a quote]].
* ''Film/{{Thunderball}}''. During the big underwater fight at the end, when sharks start to show up the SPECTRE frogmen and their opponents stop fighting each other and start attacking the sharks together.
* Subverted by ''Film/TransformersDarkOfTheMoon''. Prime and Megatron teaming up to battle a greater threat is fairly common in ''Transformers'' media, but this time [[spoiler: when Megatron offers a truce, Prime responds by cutting his head off]].
* ''Film/WestSideStory'': Despite their hatred of each other, the two gangs seem pretty united in their hatred of the cops--the Jets laugh when Bernardo mouths off to him, they pretend to be buddies to avoid suspicion, and when Shrank insults Bernardo, it's Riff who hold him back from attacking him.
* In ''Film/TheWrongArmOfTheLaw'', the tactics of an IPO mob from Australia ends up making strange bedfellows of not only underworld rivals, but also the underworld itself and the police.
* ''Film/XMen'':
** The entire point of ''Film/X2XMenUnited'': the X-Men team up with Magneto and Mystique to stop a human villain from killing all mutants. [[spoiler: Right up until Magneto and Mystique decide to invert the attack and have all the non-Mutants killed instead.]]
** Wolverine and Sabretooth in ''Film/XMenOriginsWolverine'' against InNameOnly {{Deadpool}}.
** The ending of ''Film/XMenFirstClass'' implies that the Americans and Soviets had found a common enemy in the mutants.
** In ''Film/TheWolverine'', Harada cites Viper as a [[spoiler: "means to an end," and voices his displeasure towards her consistently. Viper seems indifferent to Harada attitude-wise, but she just sees him as another inferior underling.]]
** ''Film/XMenDaysOfFuturePast'':\\\
Xavier and Magneto unite against the Sentinels that threaten all of mutantkind with extinction. [[spoiler:Although Magneto ends up attempting his own plans for mutant superiority and, ironically enough, winds up jeopardizing the plan to save mutantkind.]]\\\
Trask and Stryker are shown handing over their plans for the Sentinels to the DirtyCommunists at the Paris Peace Conference. Trask is even grateful for the mutants for providing a common enemy which will unite humanity in a struggle for survival.

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[[folder:Film]]
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[[folder:Animated Films]]
* In the first ''Film/AlienVsPredator'' film, the humans end up helping the preds kill xenomorphs by bringing them their ancient weapons.
* In ''Film/AssaultOnPrecinct131976'' and [[Film/AssaultOnPrecinct132005 its remake]], the remaining personnel of a soon to be shut down police station must put their trust on criminals within it to fight worse criminals laying siege on the place.
* ''Film/BladeII'':
** Blade
''WesternAnimation/{{Shrek}}'', [[spoiler:the ogre teams up with the vampires [[InstantAwesomeJustAddDragons dragon]] he was sent to fight a subspecies of super-vampires that prey on everyone. The vampires end up betraying Blade two-thirds of slay to save the way through the movie. Nomak (the lead super-vamp) points out the trope: "Is the enemy of my enemy my friend? Or my enemy?"
--> '''Scud''': So B-man, what do you think?
--> '''Blade''': Sounds like a plan.
--> '''Whistler''': What do you really think?
--> '''Blade''': They're gonna fuck us the first chance they get.
** Also demonstrated during the helicopter flight to the vampire HQ, when Nyssa seems disappointed with Blade over how easily he allows himself to be taken to a place where he may become a prisoner. Scud convinces Blade to show Nyssa his vest made of Semtex, enough to level a city block. Nyssa looks impressed.
* In ''Film/DickTracy'', Tracy considers this trope when deciding whether to accept The Blank's help in defeating Big Boy. Instead, he finally realizes "The enemy of my enemy is my enemy."
* This is what prompts the partnership between Wikus and Christopher in ''Film/{{District 9}}''. [[spoiler:Christopher has spent 20 years collecting enough [[GreenRocks fluid]] to power the aliens' buried shuttle so he can take the mothership and get help, but just as he gets the last of it, his shack is searched by [[MiddleManagementMook Wikus]], who accidentally inhales some of the fluid and starts [[BodyHorror transforming into an alien]]. On the run
DamselInDistress from his own [[MegaCorp company]], Wikus teams up with Christopher to get the fluid back from MNU, on the condition that Christopher change Wikus back into a human. It doesn't really [[BittersweetEnding work out that way]], but by then Wikus has had enough CharacterDevelopment to be okay with it.KnightInShiningArmor, because HumansAreTheRealMonsters.]]
* The Sci-Fi movie ''Film/EnemyMine'' (1985) (directed by Wolfgang Petersen), starring Dennis Quaid as a human space marine and Louis Gossett Jr. as an alien soldier. In ** Though slaying the midst dragon was never part of an interstellar war between their species, both crash-landed their vessels on a desolate planet and must work together to survive. Years later, after the alien soldier gave birth bargain; he just had to a baby alien and died from complications, Dennis Quaid's character raises his adoptive alien son and must protect him and himself from human scavengers who use captured aliens as slaves, until they're both finally found and rescued. It is implied that recover the princess (normally he'd have to slay the dragon, but this event helps time he just outwits her).
** Also, [[spoiler:she comes
to end the war.
* Creator/WillSmith's character in ''Film/EnemyOfTheState'' pulls an on-the-fly BatmanGambit which ties up two troublesome loose ends by getting them to deal with each other. Through some fast talking and well chosen ambiguous language, he [[spoiler: sets up a MexicanStandOff between a rogue NSA team that has taken him hostage and a gang of trigger happy goodfellas
help because Donkey, who are looking for a fight.]] It does not end well for any of them.
* ''Film/FantasticFourRiseOfTheSilverSurfer'' has the titular team teaming up with Dr. Doom to get the Silver Surfer. Eventually the Fantastic Four team up with the Surfer [[spoiler: after Doom betrays them and takes the Surfer's board for himself. And probably after to prevent Galactus from destroying Earth.
she loves, asks her to.]]
* [[spoiler:Storm Shadow]] teams up with In the Joes in ''Film/GIJoeRetaliation''.
* ''Franchise/{{Godzilla}}'':
** Mothra convinces her
first ''WesternAnimation/ToyStory'', Woody and Buzz are initially bitter enemies Godzilla and Rodan due to stop Ghidorah in ''Film/GhidorahTheThreeHeadedMonster''.
** Battra and Mothra, mortal enemies
Woody's jealously over Andy's affection, but when the two toys end up separated from the rest of one another, joined forces the group, they must work together in order to stop Godzilla in ''Film/GodzillaAndMothraTheBattleForEarth''.
** In ''Film/GodzillaVsMechagodzillaII'', Godzilla and Rodan start off fighting
get back home. [[spoiler:They then become [[FireForgedFriends good friends]] for the unhatched egg on Adona Island, Godzilla because it's a Godzillasaurus egg, Rodan because the egg's presence in the nest he had hatched in made the infant his surrogate brother. When the UNGCC eventually decide to use the newly-hatched Godzilla Jr. to lure Godzilla into a fight with Mechagodzilla, the two monsters get mortally wounded, and Rodan sacrifices what little life he has left to revive Godzilla.
** In ''Film/GodzillaVsSpaceGodzilla'', M.O.G.U.E.R.A. is built as yet another anti-Godzilla machine. But when [=SpaceGodzilla=] lands in Fukuoka and starts growing a large mass of crystal across the surface
rest of the city, the M.O.G.U.E.R.A. team ends up having to work with Godzilla to bring down the extraterrestrial invader. This trope is especially applicable for Akira Yuki, the M.O.G.U.E.R.A. captain who had been working to kill Godzilla as revenge for the monster killing his best friend Goro Gondo in ''Film/GodzillaVsBiollante''.
** In ''Film/{{Godzilla 2014}}'', the prologue deals with how MONARCH and the military tried to kill Godzilla in TheFifties with nuclear "tests" in the Pacific. When the M.U.T.O.s awaken decades later and Godzilla starts going after them, Admiral Stenz enacts a plan to kill all three monsters with an even bigger bomb. But the M.U.T.O.s [[spoiler:steal the bomb and use it to feed their nest]]. This foul-up convinces Stenz to accept Dr. Serizawa's suggestion that they ought to leave all the heavy work to Godzilla.\\\
Godzilla refuses to attack the military (who attack him on occasion) because they are opposed to the [=MUTOs=]. It helps, though, that it's quite quickly established that the military is effectively no threat to either of them.
* The first half of ''Film/TheGoodTheBadAndTheUgly'' is a slowly-escalating buildup of hatred between Blondie and Tuco to the point where they're inches from clawing out each others' eyes. Then Tuco learns the location of a graveyard where gold is hidden, Blondie learns the name on the grave where the gold is buried, and they're forced to work together, later uniting against Angel Eyes after he learns Tuco's half of the secret.
* ''Film/HellInThePacific'', about an American and a Japanese soldier trapped on an island together, and which inspired the film in the previous entry, natch.
* This is the whole premise behind ''Film/IndependenceDay''.
* ''Film/JurassicWorld''; [[RaptorAttack Blue]] teams up with [[TyrannosaurusRex Mama Rex]] to battle the ''[[BigBad Indominus Rex]]'' (Given the [[Film/JurassicPark the last time]] these two species met they tried to kill each other, this is a marked improvement)
* French horror film ''LaHorde'' is about a group of cops and criminals joining forces against a horde of zombies. A particularly tense situation because the cops were searching revenge against the gangsters that killed a colleague.
* The film ''Film/{{Krull}}'' begins with this, as two rival kingdoms arrange a political marriage to unify them against the alien invasion. [[spoiler: Sadly, it does them little good as the highly advanced Slayers storm the castle and kill everybody except for the heroic prince and his future bride, who is taken by the invaders.
trilogy.]]
* The main premise of ''Film/TheLeagueOfExtraordinaryGentlemen''.
* ''Franchise/MarvelCinematicUniverse'':
** ''Film/ThorTheDarkWorld''; Thor reluctantly teams up with Loki, as his knowledge of magic and his trip through
This trope is the other realms in ''Film/{{The Avengers|2012}}'' makes him adept at tracking Malekith and his forces.
** In ''Film/AvengersAgeOfUltron'', Ultron persuades Quicksilver and Scarlet Witch to join him in an alliance, through their mutual hatred
whole point of ''WesternAnimation/MonstersVsAliens'', though the Avengers. Likewise, monsters [[AntiVillain are pretty good-natured]].
* In the ''WesternAnimation/{{Futurama}}'' movie "Bender's Big Score", not only is the Robot Devil providing music at [[spoiler:Leela's abortive wedding]], but
they eventually decide to ditch Ultron after seeing just how dangerous he is and later team up with the Avengers, even though they aren't on good terms with Tony Stark.
* ''Film/TheMatrixRevolutions''. Neo
robot mafia and the Machines must work together to destroy Smith before he takes over both the Matrix and the Machine World. [[spoiler:After Neo allows Smith to possess him, the Machines use their power through Neo's body to destroy all of the Smith clones.]]
* In the climax of ''Film/MeanGirls'' 2, Jo's former friends decide they hate Mandi more than they hate her and agree to help her.
* Kind of lampshaded in ''[[Film/OceansEleven Ocean's Thirteen]]'', when they decide to include Benedict in their plan:
-->'''Linus:''' We've shaken every tree...\\
'''Rusty:''' I really wanted to avoid it this time...
* In ''Film/OnceUponATexasTrain'', the retired outlaws and the retired Rangers are forced to combine forces to combat a gang of younger, more ruthless outlaws.
* In the ''Film/PiratesOfTheCaribbean'' franchise, every character views the others as either enemies or [[GoodIsDumb incredibly stupid]] pawns, but will readily concede to work together when their priorities mesh. These unholy alliances tend to confuse casual viewers, who are convinced (''très'' incorrectly) that the adversarial role Barbossa plays in the first film completely contradicts the compatriot role he plays in the third.
* Mentioned in ''Film/{{Predators}}'' when Royce tells Isabelle that he intends to free the captured Predator and use that momentary trust to have him find the predator's ship and escape. Isabelle then adds:
--> '''Royce:''' The enemy of my enemy...
--> '''Isabelle:''' That doesn't make it a friend.
* A very short alliance happens in ''Film/RaidersOfTheLostArk'', when Indy and a mook are struggling over control of a gun, when [[TheDragon Toht]] says "Shoot them -- shoot them both", and suddenly Indy and the mook cooperate to shoot the other mook pointing a machine gun at them.
* In the end of ''Film/ResidentEvil Retribution'', Alice has to work with [[spoiler:Albert Wesker]] to ensure the survival of the last of humanity against the [[spoiler:Red Queen]].
* In a PlayedForLaughs moment from ''Film/TheRocketeer'', it's [[NeighbourhoodFriendlyGangsters gangsters]] siding with the police vs. [[ThoseWackyNazis Nazis]]. They may be crooks, but they're ''American'' crooks. And, yes, there's a [[StupidJetpackHitler jetpack]] involved.
* Balthazar and Mathayas resort to this in ''Film/TheScorpionKing'' in order
evil robotic Santa to take down Emperor Memmon.
* ''ShakespeareInLove'': When the Master of the Revels orders the Rose Theater closed indefinitely, thus preventing Shakespeare and company from premiering ''RomeoAndJuliet'', Richard Burbage, owner of rival theater The Curtain, makes a peace offering, saying that they should stand together against their common enemy:
-->"The Master of the Revels despises us all for vagrants and peddlers of bombast. But my father, James Burbage, had the first license to make a company of players from Her Majesty; and he drew from poets the literature of the age. We must show them that we are men of parts. Will Shakespeare has a play. I have a theater. [[CrowningMomentOfHeartwarming The Curtain is yours.]]"
* In ''Film/{{Spectre}}'', Bond and [[spoiler:Mr White]] decide to both go after Oberhauser, and try and protect the former's daughter. Though at the end of the meeting [[spoiler:White]] kills himself. Bond still considers the alliance valid, however, and does pursue the daughter.
* In ''Film/StarTrekIntoDarkness'', Harrison and Kirk temporarily team up [[spoiler:to board and disable the ''Vengeance'']].
-->'''Kirk:''' [[DiscussedTrope The enemy of my enemy is my friend]].
-->'''Spock:''' [[DiscussedTrope An Arabic proverb]] attributed to a prince who was [[AnalogyBackfire betrayed and decapitated by his own subjects]].
-->'''Kirk:''' [[LameComeback Well, it's still a hell of a quote]].
* ''Film/{{Thunderball}}''. During the big underwater fight at the end, when sharks start to show up the SPECTRE frogmen and their opponents stop fighting each other and start attacking the sharks together.
* Subverted by ''Film/TransformersDarkOfTheMoon''. Prime and Megatron teaming up to battle a greater threat is fairly common in ''Transformers'' media, but this time [[spoiler: when Megatron offers a truce, Prime responds by cutting his head off]].
* ''Film/WestSideStory'': Despite their hatred of each other, the two gangs seem pretty united in their hatred of the cops--the Jets laugh when Bernardo mouths off to him, they pretend to be buddies to avoid suspicion, and when Shrank insults Bernardo, it's Riff who hold him
Earth back from attacking him.
* In ''Film/TheWrongArmOfTheLaw'',
the tactics of an IPO mob scammer aliens.
* When Prince Achmed
from Australia ends up making strange bedfellows of not only underworld rivals, but also ''WesternAnimation/TheAdventuresOfPrinceAchmed'' stumbles into the underworld itself and the police.
* ''Film/XMen'':
** The entire point
volcano home of ''Film/X2XMenUnited'': the X-Men team up with Magneto and Mystique a powerful witch, she tries to stop a human villain from killing all mutants. [[spoiler: Right up until Magneto and Mystique decide strangle him. When Achmed finally manages to invert the attack and have all the non-Mutants killed instead.]]
** Wolverine and Sabretooth in ''Film/XMenOriginsWolverine'' against InNameOnly {{Deadpool}}.
** The ending of ''Film/XMenFirstClass'' implies
tell her that he was marooned there by the Americans and Soviets had found a common enemy in evil wizard, she says "He is my greatest enemy! And we are friends!" She then helps Achmed defeat the mutants.
** In ''Film/TheWolverine'', Harada cites Viper as a [[spoiler: "means to an end," and voices his displeasure towards her consistently. Viper seems indifferent to Harada attitude-wise, but she just sees him as another inferior underling.]]
** ''Film/XMenDaysOfFuturePast'':\\\
Xavier and Magneto unite against the Sentinels that threaten all of mutantkind with extinction. [[spoiler:Although Magneto ends up attempting his own plans for mutant superiority and, ironically enough, winds up jeopardizing the plan to save mutantkind.]]\\\
Trask and Stryker are shown handing over their plans for the Sentinels to the DirtyCommunists at the Paris Peace Conference. Trask is even grateful for the mutants for providing a common enemy which will unite humanity in a struggle for survival.
wizard.



[[folder:Literature]]
* In ''Literature/TheBookOfMormon'' the Nephites and the Lamanites, usually mortal enemies of one another, join forces against the even more murderous Gadianton robbers in 3rd Nephi.
* ''[[Literature/TheEnemyPapers Enemy Mine]]'' by Barry B. Longyear, the basis for the movie mentioned above.
* ''TabletopGame/{{Warhammer 40000}}'':
** In William King's novel ''Literature/SpaceWolf'', the Marines chose Ragnar and Strybjorn for Marines when they were fighting each other to the death, and both were mortally wounded. Ragnar's desire for {{Revenge}} is kept at bay by the knowledge that the Marines will not let him. [[spoiler:Finally, when they are fighting Chaos Space Marines, Strybjorn saves Ragnar's life, and shortly thereafter goes down. Ragnar realizes that he neither should nor does want Strybjorn to die; he sends the others on and [[NoOneGetsLeftBehind stays to treat and bring Strybjorn with them]].]]
** The first ''Literature/CiaphasCain'' novel, ''For the Emperor'', forces the Imperial Guard into an uneasy truce with a Tau diplomatic security contingent because neither side considers the crappy backwater planet Gravalax worth getting into an all-out war over. [[spoiler:It turns into EnemyMine after the two sides discover there's a genestealer cult trying to ''provoke'' that war, and the Tau aid the Guard in restoring order. The suicide squad Cain puts together from condemned Guardsmen joins up with a Tau pathfinder unit down below, while on the surface, a Tau Hammerhead hover-tank helps the 597th break through a traitor PDF position.]]
** HistoryRepeats in the ninth novel, ''The Greater Good'', where the Tau and Guard start out fighting, [[spoiler:then are forced to join forces when their war is rudely interrupted by a tyranid hive fleet]].
** Subverted in ''[[Literature/SpaceMarineBattles World Engine]]'' - after realizing that both the Astral Knights and Turakhin are there for Hequroth's blood (engine coolant?), the two simply decide to ignore each other until the Overlord's dead.
** In another ''Literature/SpaceMarineBattles'' novel, ''Malodrax'', Lysander is disgusted to find an ally in a daemon prince, but goes with it, as he wants revenge on Thul and Shalhadar wants to teach the Iron Warrior his place.
* And in the ''Literature/WarchildSeries'', Captain Azarcon, a SpaceMarine, and Niko, human sympathizer of the alien [[LaResistance resistance]] work together to [[spoiler:rescue hostages and capture gunrunners. This collaboration leads to the end of the war... for a time, anyway.]]
* In Creator/EEDocSmith's ''[[Literature/SkylarkSeries The Skylark of Space]]'', the villain [=DuQuesne=] agrees to act as one of the party until they return safely to Earth, even though he wants the hero Richard Seaton dead. Ultimately Seaton [[spoiler:makes his best friend hand BOTH his guns over to [=DuQuesne=] because [=DuQuesne=] is the better shot, and then Seaton and [=DuQuesne=] stand side by side and mow down their common enemies until all four guns are empty.]] In ''Skylark [=DuQuesne=]'', [=DuQuesne=] enlists Seaton's help in fighting an otherwise unstoppable alien menace and ends up [[spoiler:winning the war and saving Seaton's life in the process]], though by this time [[spoiler:his reasons for wanting Seaton dead no longer apply]]. The fact that each man at least respects the other's abilities helps.
* ''{{Worldwar}}'', by Creator/HarryTurtledove. Aliens invade in 1942. The Axis are working with the Allies. Another one occurs between the Jews in Europe and the Race. Aliens who never figured out discrimination or Nazi Germany. Played with in the sense that they aren't quite sure who'd be worse for mankind. (The Jews play it both ways,[[HeelFaceRevolvingDoor working with the Race or the Germans depending on who's a bigger threat at the time.]])
* In ''Literature/WorldWarZ'', after the zombie outbreak Israel pulls back from the Palestinian territories and offers asylum to any uninfected Palestinian refugees, both sides agreeing to cooperate in the face of an apocalyptic disaster. When the outbreak is contained they form a permanent truce and Israel agrees to a two-state solution.
* In ''Literature/HarryPotterAndTheDeathlyHallows'', Narcissa Malfoy [[spoiler:helps Harry continue faking his death to Lord Voldemort in order to save her family.]]
* Literature/TheRiftwarCycle has a few:
** In ''A Darkness at Sethanon'', the Heroic Prince teams up with the former EvilChancellor to defend a city against the TheHorde.
** In ''Honored Enemy'', a band of Kingdom raiders allies with a Tsurani patrol in order to survive pursuit from a [[AlwaysChaoticEvil Moredhel]] company. The story plays during the war between the Kingdom and the Tsurani and revolves around the tension this causes.
** In ''VideoGame/BetrayalAtKrondor'', the moredhel chieftain Gorath seeks out Prince Arutha to curb another upcoming invasion that he feels would be too costly for his people.
** In the Chaoswar Saga, the final trilogy, an enemy shows up who is so dangerous that the God of Evil comes in on the side of Good.
* The ''Literature/{{Animorphs}}'' only teamed up with their main enemy, Visser Three, twice: to defeat a race of annoying, psycho, tiny-tiny-tiny aliens with a shrink ray and a mass Napoleon Complex, and to escape from a bunch of mutated blue fish-people that want to kill and stuff them for their DerelictGraveyard. On the other hand, Visser One freed them from Visser Three's prison in her very first appearance. Since the Animorphs are guerrilla fighters and Visser One is the main advocate for a stealth invasion (and her host is [[spoiler:Marco's mom]]), they're not unwilling to accommodate her if it hurts Visser Three's credibility -- but they're not unwilling to use it as an excuse to double-cross her, either...
** In ''Elfangor's Secret'', the Ellimist and Crayak both agree that the Time Matrix should not be in the hands of a mere mortal and help the Animorphs stop Visser Four.
** In the last few books, they team up with Tom and his followers in order to hijack the Pool Ship. Both sides then double-cross each other, but the Animorphs end up winning in the end.
** In ''The Andalite Chronicles'' there's a brief few minutes where Elfangor and the future Visser Three (then only Visser Thirty-Two) team up to escape certain death.
* In ''The Other Wind'', the last (so far) in Creator/UrsulaKLeGuin's ''Literature/{{Earthsea|Trilogy}}'' series, representatives of four cultures normally at loggerheads - if not outright enmity - have to pool their respective mythological knowledge in order to figure out the truth about an ancient evil.
* In the ''[[Literature/HonorHarrington Crown of Slaves]]'' sub-series of the ''Honorverse'', Victor Cachat and Anton Zilwicki are two intelligence operatives from the warring Star Empire of Manticore and the Republic of Haven (Formerly People's Republic of Haven). They team up to investigate Mesan intrigue and how it impacts the war. It's implied this sub series may lead to a Grand Alliance...
** Really, by now it's evident that The Climactic Conflict will be between the Andermani/Havenites/Manticore/Maya/Beowulf/Torch/others versus the frikkin' huge Solarian League (minus bits like Maya)/Mesa/whatever else we haven't seen yet. It promises to be ''awesome''.[[note]]Though in context, Manticore and (post-Theisman Coup) Haven are natural ''allies'', particularly considering how vehemently both of them enforce the Cherwell Convention. Now that the reason for the war -- the PRH's expansionist policies -- is gone, the true Republic has been restored, and all the diplomatic snafus are cleared away, it would have been more surprising if they ''hadn't'' allied together.[[/note]]
** As of ''Mission Of Honor'', [[spoiler:Manticore and Haven have signed both a peace treaty and a military alliance]].
* In the ''TheEternalChampion'' story by Creator/MichaelMoorcock, humanity has unified solely because of the presence of the alien Eldren. Ekrose, the protagonist states that, absent the Eldren presence, humanity would be at war with itself. This is a key reason for his decision to [[spoiler:kill the entire human race]]
* Creator/TadWilliams' ''Literature/{{Otherland}}'' CyberPunk novel series has a prominent example of this in the fourth book. After PsychoForHire John Dread usurps control of the Otherland network, CorruptCorporateExecutive Felix Jongleur, who up until now has regarded the heroes as an annoyance (if he was aware of them at all), finds himself on equal footing with them: trapped in the network and [[BroughtDownToNormal unable to use his godlike powers]].
* This is a major part of the plot of all 3 novels in CS Friedman's ''{{Coldfire|Trilogy}}'' trilogy: an immortal vampire and a priest team up to fight mutual enemies. [[spoiler: By the end of the novels, the priest has been thrown out of his church and the vampire's patron Dark God has rescinded his immortality and cast him into Hell for being insufficiently evil. Turns out saving the world isn't compatible with maintaining that black-as-a-moonless-night karma, who knew?]]
* ''Literature/TheHobbit''. The dwarves are about to fight a battle with the Lake-men and Wood-elves to determine who will gain Smaug's treasure. Gandalf appears and warns them that an army of goblins and wargs is approaching, and they must join together to fight the evil attackers.
* In ''Literature/{{Dragonlance}}'', black robed mages ally themselves with the good guys every now and then, for example to drive off the Dark Queen in ''Literature/TheLegendOfHuma'' and during the War of the Lance. ''Dragons of Summer Flame'' was based around this trope. Also Fistandantilus and the Kingpriest used each other for their own goals.
* In ''Literature/TheLegendOfDrizzt'' Drizzt Do'Urden and Artemis Entreri must team up and fight back to back in an effort to get out of the Underdark at one point.
* It is briefly mentioned in the ''TabletopGame/{{Warhammer 40000}}'' novel ''Literature/GreyKnights'' that the underhive gangs of Volcanis Ultor "buried their enmities for one long night" to do battle with a powerful gang of Chaos followers.
* ''Literature/{{Twilight}}'': The Cullens ([[FriendlyNeighborhoodVampires Vegetarian Vampires]]) and the Quilettes ([[FurAgainstFang Werewolves born to kill vampires]]), had to work together to destroy an army of newborn vampires that were killing people in general and wanted to kill Bella Swan in particular.
* ''Franchise/StarWars'':
** While most of the clone troopers went on to serve the empire, the True Mandalorians (a.k.a. the group that nearly destroyed the Galactic Republic 4,000 years ago) fought alongside the rebels to retain their heritage as well as kill those who had betrayed their own kin.
** ''Literature/FateOfTheJedi'': Jedi and the LostTribe of the Sith form an alliance (in the titular ''Allies''), to investigate and subdue a feminine EldritchAbomination named Abeloth. The arrangement doesn't last long, but it does allow Luke's son Ben to pick up a [[DarkActionGirl Sith Apprentice Girlfriend]]...
** Speaking of ''Literature/FateOfTheJedi'', Apocalypse reveals that the Father, the Son, and the Daughter had fought against Abeloth multiple times after she got corrupted. The mere fact that the Son, who is the embodiment of the Dark Side, would ally himself with the Daughter, who is the embodiment of the Light Side, even when they would more often than not fight each other to the death had it not been for the Father's influence would imply that this trope came into play.
** ''TheThrawnTrilogy'': Mara Jade sees her having to constantly work with Luke as this trope, especially with that [[KillMeNowOrForeverStayYourHand not-so-covert wish to kill him]]. He doesn't see it the same way, though. At the end of the trilogy, they've become FireForgedFriends, and by the ''Literature/NewJediOrder'' series, they're a married BattleCouple.
** ''Literature/TheTruceAtBakura'' is this trope personified, with the Imperials forced to work with the Rebels to defeat the evil Ssi-Ruuk. [[spoiler:Once it becomes clear that the aliens are in retreat, the Empire reverts back to their evil selves and re-declares war on the Alliance.]]
** A couple of times in the ''Literature/NewJediOrder''. In ''Conquest'', Anakin Solo teams up with [[ScaryDogmaticAliens Yuuzhan Vong]] warrior Vua Rapuung to rescue his friend Tahiri from a MadScientist who is also Rapuung's enemy (and ex-lover). In the last book, ''The Unifying Force'', Han Solo and Boba Fett find themselves briefly fighting side-by-side against Vong warriors. Finally, at the very end of the series, a subversion comes into play- Nom Anor, RecurringBoss for most of the series, allies with the heroes only out of a selfish sense of self-preservation, and immediately tries to flush them out an airlock when he feels they've outlived their usefulness. For his part, he 'does'' eventually [[BecomingTheMask Become the Mask]] of the Prophet, and genuinely leads an uprising of the Shamed Ones (who have come to view the Jedi as saviors) against the rest of the Vong.
** In ''Iron Fist'', one of the ''Literature/XWingSeries'' novels, Admiral Rogriss of the Empire offers a temporary unofficial alliance with Solo and his fleet to hunt down Warlord Zsinj, and then, in his words, they can go back to their personal ideological differences without inviting anyone else to play.
** During the ''Literature/HandOfThrawn'', Grand Admiral Pellaeon is of sufficient power that when he states it's time for the Empire to sue for peace with the Republic, ''they sue for peace''. However when a conspiracy led by Moff Disra of Bastion, his Dragon ([[spoiler: a stormtrooper modified with [[MagnificentBastard Thrawn's strategic skill]]]]), and a con artist posing as a resurrected Thrawn threatens the entire process, Pellaeon works ''with'' agents of the New Republic to help foil the diplomatic crisis engineered by Disra.
*** Additionally, Baron Fell attempts to recruit Luke and Mara as representatives of both powers into forging the exact same sort of alliance with the Chiss against a major undisclosed threat Thrawn had spent his time in "exile" along the Outer Rim preparing to fight, [[spoiler: which turns out to be the Yuuzhan Vong]].
* ''Literature/ASongOfIceAndFire'' has some interesting ones. Jaime Lannister and Brienne of Tarth are forced to coexist when Catelyn Stark sends Brienne to trade Jaime for Sansa, but though they start out quite hostile, they've reached a point of sort-of friendship and mutual respect (and [[ShipTease maybe more]]). A more hostile camaraderie briefly exists between Sandor Clegane and Arya Stark; she still hates him, sure, but when it comes down to it they work well together, and she's probably more like him than she'd like to acknowledge. On a larger scale in ''A Dance with Dragons'' [[spoiler: the wildlings and the Night's Watch agree to work together against the Others. Many of them aren't happy about this, rendering the alliance extremely tenuous.]]
** While they never actually get round to fighting, Stannis Baratheon makes it clear he views Robb Stark as just as much of an enemy as BigBad Joffrey Baratheon. By Book 5, Robb has been betrayed and killed by some of his own soldiers, while Stannis' forces have been decimated. Subsequently, the Northern soldiers who remain loyal to the Starks join up with Stannis.
** On the outbreak of war, the Tyrells initially throw their support behind Renly Baratheon. When Stannis assassinates Renly, they jump ship to Joffrey and the Lannisters in order to take revenge on Stannis.
* Reversed in the ''Franchise/StarTrekExpandedUniverse''. In the wake of the Borg invasion, several previously non-aligned minor enemies such as the Tholians join the Typhon Pact in order to leave the Federation and Klingon Empire surrounded by a hostile power. The Tholians, well-known for xenophobia, join for this reason ''alone''.
* The DaleBrown novel ''Air Battle Force'' culminates in [[spoiler: the Taliban detachment that served as primary enemy of that book]] working with Turkmen and American forces against the Russians, which continues into ''Plan of Attack''.
** ''Edge of Battle'' has [[spoiler: Zakharov and Task Force TALON]] reluctantly cooperating after Comandante Veracruz's double-cross, though it doesn't last.
** ''Strike Force'' is centred on an Iranian coup leader and former enemy of Dreamland who now needs their help. The blurb tells you as much!
* ''A Pict Song'' by Creator/RudyardKipling. "No indeed! We are not strong, But we know Peoples that are..."
* ''The White Rose'' by Glen Cook. In the final battle the Lady -- sorceress leader of the northern empire -- needs the help of the white rose to take down the dominator, her husband and a much better sorcerer. The white rose creates a area where magic cannot be used and therefore is vital to taking down the greatest sorcerer in known history.
* In ''[[Literature/TheIcewindDaleTrilogy Streams of Silver]]'', Drizzt Do'Urden and Artemis Entreri declared a temporary truce in order to join forces against a common enemy (the [[AlwaysChaoticEvil gray dwarves]] inhabiting Mithral Hall). Some time later, in ''[[Literature/LegacyOfTheDrowSeries Starless Night]]'', Catti-Brie and Entreri teamed up to rescue Drizzt from the drow, who were holding all three of them captive and who would have eventually executed both Drizzt and Entreri. (Or condemned them to a FateWorseThanDeath.)
* ''Literature/ArtemisFowl'' and Holly do this in ''The Arctic Incident'' and ''The Eternity Code'' -- they are opponents, or at the very least rivals with a sore history, even though they have both saved each others' lives. In ''The Arctic Incident'', they cooperate as part of a deal: Artemis uses his above-world influence to investigate a smuggler, while the LEP use their advanced technology to help rescue Fowl Senior. In ''The Eternity Code'', their relationship is more tense as they cooperate to resolve a situation Artemis is partly to blame for. By ''The Opal Deception'', they are friends, and later [[ShipTease possibly more than that]], though that does not go anywhere.
* A complicated example occurs in the "Richard Bachman" (actually Stephen King) novel ''Literature/TheRegulators''. The demon Tak is possessing a young autistic boy, and is somehow using the boy's unique mind to augment and give shape to its supernatural power. Both the boy and the demon are fans of cheap westerns and a Power-Rangers style TV show, both of which the demon uses as inspiration for his means of destroying the town. In the show-within-a-show, the heroes team up with their enemy to stop a something from destroying Earth. Tak channels this as the final assault on the protagonists.
* [[TheHero Sam]] and [[BigBad Caine]] of the ''Literature/{{Gone}}'' series (who are ironically brothers) have teamed up ''twice'' during intervals of trying to kill each other;
** They teamed up in ''Hunger'', against [[TheDragon Drake Merwin]]. Sam wanted him dead because he tortured him senselessly and this was enough to piss even ''him'' off, and Caine's motive was spontaneous rage for him trying to his [[UnholyMatrimony girlfriend]] [[TheDarkChick Diana]].
** In ''Lies'' they have reluctantly paired up again to murder [[spoiler: Caine's daughter.]]. They fail miserably, but it's a awesome fight scene.
* This is how [[Literature/VorkosiganSaga Miles Vorkosigan's]] parents got together, in ''Shards of Honor''.
* In Creator/RobertEHoward's ConanTheBarbarian story "Literature/RoguesInTheHouse" after Murilo and Conan have broken into Nabonidus's house to kill him, and find that he is not, after all, the BeastMan, they ally with him to deal with it.
* In ''Shattered Sky'', the third book in the ''Literature/StarShardsChronicles'' trilogy, the good guys team up with [[spoiler:Okoya, the villain of the second book]] to defeat a greater enemy that threatens to destroy the universe.
* In ''Literature/TheTrailOfCthulhu'', it's revealed that Professor Shrewsbury and Hastur (presented here as Cthulhu's [[CainAndAbel rival brother]]) have struck an alliance to keep Cthulhu from waking up.
* In Literature/TheDresdenFiles series, Harry teams up with Lara Raith multiple times over the course of the series to help them reach mutual goals.
** They do this quite often in fact, to the point at one instance Lara indicates quite clearly she would rather [[IsThatWhatTheyreCallingItNow rule]] with Dresden together than for them to keep fighting each other.
*** Harry has shown that he finds it particularly (or at least very) difficult to resist her, and has even used this fact to taunt a mutual enemy, one of her cousins with whom she shares a bitter rivalry. It was later revealed in Cold Days that [[spoiler: if Kincaid had refused to kill him in Changes, his second choice would have been to go OutWithABang at her...um, ministrations.]]
** He does this even more with crime lord John Marcone; it eventually gets to the point where they've had common goals so often, they're more enemies in principle than practice.
** The novel ''Turn Coat'' is one long, extended Enemy Mine sequence between Harry and his former nemesis Donald Morgan, who finds himself needing Harry's help to survive.
* In the ''Literature/CodexAlera'' series, the Canim have Gadara, meaning "trusted enemy". Gadara can often work together, as [[spoiler: Tavi and Varg]] eventually do.
** The trope is carried much further with the appearance of [[spoiler:the Vord]], which allows the First Lord to forge tentative alliances with all of Alera's long-standing enemies to fight together against the new opponent. In fact, the First Lord ends up saying [[spoiler:the Vord]] was the best thing to happen to Alera.
* In ''Series/TheManFromUNCLE'' novel ''[[http://www.amazon.com/dagger-affair-Man-U-N-C-L-E/dp/B0007KDMFI The Dagger Affair]]'' by David [=McDaniel=], UNCLE and THRUSH operatives work together to stop DAGGER, a new organization armed with advanced science. In the end a THRUSH-controlled fighter jet kamikazes the DAGGER base, using sheer momentum to overwhelm its force field. There's a poignant moment where the leader of THRUSH reminds the leader of UNCLE of their former friendship and gives him a copy of ''Literature/NineteenEightyFour''. Then he ends the truce ahead of the agreed time, not that anyone expected anything else. We also discover that the full name of THRUSH is the somewhat unwieldy "Technological Hierarchy for the Removal of Undesirables and the Subjugation of Humanity".
* In the second book of the ''Literature/{{Mistborn}}'' trilogy, Vin finds herself working with an enemy - [[spoiler:Ten-Soon, who had assumed the identity of Ore-Seur, and had been working on behalf of Straff Venture.]]
** Then there's [[StalkerWithACrush the Watcher]], who is first introduced when she notes that she missed fighting with that one guy who is probably an assassin but hasn't seriously tried to kill anyone yet. His first proper appearance is him saving her life from the sidelines as she hadn't realised one of her opponents had Atium.
* This happens in ''Literature/ThePathToWar'' where Tahniya is soul bound to Zan as punishment; they can't stand each other.
* Bertie Wooster and [[spoiler:Sir Roderick Glossop]] team up in ''[[Literature/JeevesAndWooster Thank You, Jeeves]]'' and end up getting along very well, even exchanging invitations to lunch. Bertie notes that he can't be all bad, since he [[spoiler:beat up Chuffy's BrattyHalfPint cousin Seabury]].
* This is the plot of Creator/HarryHarrison's ''Stars and Stripes'' AlterhateHistory trilogy. After the British declare war on the Union, they accidentally sack a Confederate town instead of a Union fort (the stars-and-bars flag confuses them). In response, the Union and the Confederacy agree to a cease-fire and, eventually, the Confederacy re-integrates into the USA and abolishes slavery in the face of the British Empire. One of the main criticisms of the trilogy is how easily this happens without too many problems.
* The alliance of the outlawed Malazan commander Dujek Onearm with his enemy Caladan Brood against the [[OmnicidalManiac omnicidal]] Pannion Seer in the third volume of ''TheMalazanBookOfTheFallen''. [[spoiler:It later turns out that Dujek's outlawry was a XanatosGambit by Malazan Empress Laseen to win Caladan's support for the war.]]
* In Creator/TomKratman's ''Literature/{{Caliphate}}'', in spite of a continuing state of low-level conflict between them, the [[ExpandedStatesOfAmerica Imperial States of America]] and the Celestial Kingdom of the Han (China) work together to eliminate a significant [[spoiler:bioweapon]] threat posed by the eponymous Caliphate.
* ''Literature/LegacyOfTheDragokin'' has three examples:
** The premise is Baalaria and Drewghaven teaming up to quell raiders produced by civil unrest.
** Zarracka and [[spoiler: Mordak]] team up because they both hate Daniar.
** [[spoiler: Everyone still alive joins forces against Kthonia.]]
* In AndreNorton's ''Literature/{{Catseye}}'', faced with Troy's suspicion, Rerne proposes that they join forces against a common foe.
* A typical strategy in ''TheHungerGames'', especially used by the Careers. Involves forming alliances with one or more other tributes to help each other, stay alive longer, and maybe take out other tributes. But of course, these can only be temporary, since the pool of remaining tributes gets smaller and smaller... There's only ''one'' victor, after all.
* In Creator/JulieKagawa's ''Literature/TheIronDaughter'', Ironhorse allies with Meghan because he considers the Iron King to be false.
* In ''Literature/APassageToIndia'', which is set in the [[UsefulNotes/TheRaj British Raj]], the religious divisions among native Indians - particularly those between Hindus and Muslims - are only set aside when they find themselves both in conflict with the ruling British authorities. As Dr Aziz says to [[AuthorAvatar Cyril Fielding]], "We may hate each other, but we hate you more."
* In ''Literature/TheHouseOfNight'', Aphrodite and Zoey start out with an ArchEnemy relationship, which ends up morphing when the two of them need each other and have a common enemy. Zoey and Aphrodite frequently have JerkassHasAPoint moments.
* ''Unintended Consequences'' by Stuart Woods has BigBad Ivan Majerov attempt to take over the assets of Stone Barrington through many means, including Stone's murder. He doesn't succeed. The following book, ''Doing Hard Time,'' shows his men with roots in TheMafiya plotting to hurt Stone's son, Peter, as revenge. They make the fatal mistake of thinking fugitive-in-hiding Teddy Fay (a serial killer with various skills, including flying planes and speaking Russian) overheard them and try to take him out as well. Teddy kills them, points out their intents to Peter, and takes it on himself to protect the younger man. He leaves behind two other bodies as well before meeting Stone (and finding out Majerov's [[TheDragon second,]] Vlad, aka [[NamesToRunAwayFromReallyFast "The Viper"]] has also arrived, and the two men put together a plan to take both Russians out of the picture permanently. [[spoiler: Teddy is able to kill The Viper in his room with a bullet, and poses as a pilot to kill Majerov himself with a syringe of potassium. As this saves Peter's life, these acts later lead to Stone using his pull with President Will Lee to arrange for a presidential pardon for Teddy.]]
* The point of the ''Literature/LeagueOfMagi'' story "Wait," and ultimately subverted when [[spoiler: one of them kills the other.]]
* In ''Literature/LastSacrifice'', Rose teams up with [[spoiler:Victor Dashkov]] against the mysterious assassin of [[spoiler:Tatiana Ivashkov]].
* The end of the first book of the ''Literature/AhrimanTrilogy'' features the hero teaming up with a man whose entire job is hunting down and killing mages like him.
* Happens in the backstory of ''Literature/RememberToAlwaysBeBrave'', and shown in with the prequel ''{{Literature/Cilva}}'', the Roman Republic is called in by the Alliance to aid an uprising in Zesan/Azania's capital city of Cilva. It's not a trap, but its not really an uprising either. It is mused on as a total wreck of a battle. Later on in Remember To Always Be Brave, the Roman Republic and the Alliance of Nations unites [[spoiler: to fight the Tenebrae invaders, and Corna turns on the Tenebrae after they use a cult base as a experiment ground for their biological terror weapon.]]
* Of a sort in ''Literature/{{Insurgent}}'', Cara extremely dislikes Tris [[spoiler:(due to Tris [[ShootTheDog shooting a brainwashed Will]]]]) but is fully willing to assist in Tris's plans. She even admits to Christina that logically, Tris did what had to be done.
* In ''Literature/TheEmpressGame'', it gets complicated. Blame for the conquest of Ordoch can be attributed both to the IDC (which planned it) and to Dolan (who led the Empire there in the first place). Kayla, an Ordochian, is willing to work with an IDC team while opposing Dolan, since she thinks there's a possibility of freeing Ordoch that way. [[spoiler:Meanwhile, Tia'tan is pursuing the same objective by working with Dolan against the IDC team. She and Kayla each accuse the other of being a traitor on account of the alliances they made. When they work past that, they team up themselves.]]
* In ''Literature/ThePillarsOfReality'', Mari and Alain start out thinking of each other as enemies who have to work together to survive. As they get to know each other, however, they begin to realise that they're only enemies in the first place because each of their respective Guilds are either wrong or lying about the other.

to:

[[folder:Literature]]
[[folder:Anime And Manga]]
* Subverted in ''Anime/UFORoboGrendizer''. In ''Literature/TheBookOfMormon'' one of the Nephites manga versions, ''Anime/GreatMazinger'' BigBad, Emperor of Darkness, offered ''[[Anime/MazingerZ Kouji Kabuto]]'' an alliance to fight [[AlienInvasion the Vegans]]. It was subverted because Kouji refused the offer and BigBad King Vega [[spoiler:killed the Lamanites, usually mortal enemies of one another, join forces against the even more murderous Gadianton robbers in 3rd Nephi.
* ''[[Literature/TheEnemyPapers Enemy Mine]]'' by Barry B. Longyear, the basis for the movie mentioned above.
* ''TabletopGame/{{Warhammer 40000}}'':
** In William King's novel ''Literature/SpaceWolf'', the Marines chose Ragnar and Strybjorn for Marines when they were fighting each other
Emperor to the death, and both were mortally wounded. Ragnar's desire for {{Revenge}} is kept at bay by the knowledge impede that the Marines will not let him. [[spoiler:Finally, when they are fighting Chaos Space Marines, Strybjorn saves Ragnar's life, alliance and shortly thereafter goes down. Ragnar realizes that he neither should nor does want Strybjorn to die; he sends the others on get rid of a possible enemy and [[NoOneGetsLeftBehind stays to treat and bring Strybjorn with them]].competitor.]]
** The first ''Literature/CiaphasCain'' novel, ''For * In the Emperor'', forces anime version of ''Anime/ValkyriaChronicles'', Episode 12 has Welkin and Faldio team up with Jaeger and Selvaria to foil a plot to kidnap Princess Cordelia (and Alicia, who was captured in the process) and use her to BS an impromptu alliance between the Federation and Gallia, which is really a cheap way for Prime Minster Borg to usurp the throne "legally" and force the Imperial Guard forces into an uneasy truce a two front war situation, which at best leaves him in control of Gallia with a Tau diplomatic security contingent because neither side considers Federation backing and gives the crappy backwater planet Gravalax worth getting into Imperial forces pause, or at worst ensures the Imperials are forced to fight a much bigger enemy on two fronts, with either outcome leaving him at an all-out war over. [[spoiler:It turns into advantage. Everyone launches obvious objections to Welkin's proposed EnemyMine after until Welkin points out the massive mutual gain they stand to profit from, leading to a brief Imperial-Gallia alliance to foil the plot.
* ''Franchise/LyricalNanoha'':
** In the first
two sides discover there's a genestealer cult trying to ''provoke'' that war, ''Anime/MagicalGirlLyricalNanoha'' seasons, Nanoha's {{de|featMeansFriendship}}termination finally pays off, and her rivals turn on their creator and help her and the Tau aid Time-Space Admin crew.
** It's a mixed bag in ''[[Anime/MagicalGirlLyricalNanohaStrikerS StrikerS]]''. On
the Guard one hand, [[spoiler: most of the Numbers were headed in restoring order. The suicide squad Cain puts together from condemned Guardsmen joins the right direction as of the epilogue and eventually joined either the [[SaintlyChurch Saint Church]] or [[TheFederation the TSAB]] afterward, Lutecia has her mom back, and Agito had performed a full-fledged HeelFaceTurn and joined up with a Tau pathfinder unit down below, while on Signum to defend the surface, a Tau Hammerhead hover-tank helps city from Jail's drones.]] On the 597th break through a traitor PDF position.other hand, [[spoiler:Jail and his most loyal cyborgs are cooling their heels in prison instead of making friends with the Aces.]]
** HistoryRepeats in * In ''Anime/{{Pokemon}}'', the ninth novel, ''The Greater Good'', where the Tau and Guard start out fighting, [[spoiler:then heroes are forced to join forces when work with TeamRocket every once in a while, most often in the movies where the whole world is in danger. It happens the point the trio performs a LampshadeHanging on it in Movie 8:
-->'''James:''' Looks like everything's back to normal.\\
'''Jessie:''' Which means we're back to being losers.
** This is the whole plot of the episode "''Pikachu Re-Volts''". After Jessie and James's Pokemon are controlled and taken by
their war is rudely interrupted by a tyranid hive fleet]].
fellow Team Rocket members, Cassidy and Butch, Ash and company team up with them to get the Pokemon back.
** Subverted in ''[[Literature/SpaceMarineBattles World Engine]]'' - The most bizarre version of this has to be the Season 7 episode "''The Bicker the Better''", where after realizing that both the Astral Knights much squabbling between males and Turakhin are there for Hequroth's blood (engine coolant?), the two simply decide to ignore each other until the Overlord's dead.
** In another ''Literature/SpaceMarineBattles'' novel, ''Malodrax'', Lysander is disgusted to find
females, Jessie recruits a (slightly reluctant) May into a tag team battle...versus James, who also formed an ally in a daemon prince, but goes alliance with it, as he wants revenge on Thul and Shalhadar wants to teach Ash, in what Brock calls "the battle of the Iron Warrior his place.
*
sexes".
**
And in a first season episode, Ash and the ''Literature/WarchildSeries'', Captain Azarcon, gang even '''''help''''' Team Rocket try to kidnap the MonsterOfTheWeek: a SpaceMarine, and Niko, human sympathizer Snorlax, which they thought was the one causing the drought in a nearby town.
** A more traditional example is in the Tag Battle Tournament mini-arc, the finale
of the alien [[LaResistance resistance]] first ''Diamond and Pearl'' season. Ash and '''[[TheRival Paul]]''' were randomly picked to compete as a team for a pair of Soothe Bells as the prize. Paul just wanted to get some experience for his team, none of the happiness items for him. The results were not pretty, even though they managed to win.
** In episode [=XY063=], Team Rocket and Ash's crew
work together to [[spoiler:rescue hostages foil a Pokemon hunter. The impetus for it was the hunter kidnapping Meowth, James' Inkay, and capture gunrunners. This collaboration leads to Jessie's Pumpkaboo. It even features a JustInTime moment for Wobbuffet.
** Happens fairly often in ''Manga/PokemonSpecial''. Sabrina, Koga, and Lt. Surge of Team Rocket aid the protagonists against the Elite Four in the Yellow chapter, while Lorelei of the Elite Four helps the protagonists when Team Rocket invades her hometown.
** Near
the end of ''Manga/PokemonDiamondAndPearlAdventure'', Cyrus and his three top officers team up with the war... for heroes to stop Charon from taking over Sinnoh. When he was last in power, Cyrus had attempted to destroy the universe.
* In ''Anime/YuGiOh'', Yugi and Kaiba are frequently forced to team up against
a time, anyway.bigger threat, and it almost always ends with Kaiba walking away muttering about how he is destined to beat Yugi someday.
** Yugi and Kaiba are more like rivals than enemies - Kaiba is never actually on the 'evil' side except during the very start of the series (given a partially accurate incarnation in Season 0, which was so much DarkerAndEdgier than the rest of the series that it's never had an English dub).
** Also, Malik and Bakura's alliance, specifically in the duel against Yami no Malik.
** Similarly during the formation of the same team in ''WebVideo/YuGiOhTheAbridgedSeries'', Marik proclaims, "And the enemy of my friend is also my enemy!" Bakura informs him that's not how it goes.
* ''[[Anime/MobileSuitGundam00 Gundam 00]]'' has the alliance between the Big Three (Union, HRL, AEU) which was formed to defeat the rogue paramilitary organization Celestial Being.
** In Episode 17, all five sides (Celestial Being, Katharon, the coup d'etat forces, the regular Earth Federation military, and A-Laws) temporarily dispose of their hatreds in a CrowningMomentOfAwesome ''for all sides'' that involves stopping a potential Ice Age and the slaughter of tens of millions of lives by shooting down the countless falling pieces of the destroyed Africa Orbital Elevator.
** Later in season 2, the Federation army reluctantly allies itself with bitter enemies Celestial Being and Katharon against the A-Laws and the Innovators.
* In ''Manga/DeathNote'', Near and Mello are bona fide enemies, despite being {{Worthy Opponent}}s. When Kira manages to be a bigger fish to fry than they had expected, they do end up de facto needing to work together, using the only female on their of their teams as a liaison, and pretending viciously that they want nothing to do with each other.
** Near's pretty clear that he'd have no problem working with Mello, to the point that it could be argued he does want to. Mello's the one who wants nothing to do with Near (besides win against him) and tries to verbally pretend he's not helping. "Near, I have no intention of working with you. However, it wouldn't be right to just take my picture and leave. So, I'll settle my debt." Afterward, he still maintains contact with Lidner but pointedly doesn't dwell on the fact that he knows that Near knows about the contact.
** Also, at one point the investigation team is forced to temporarily ally with Kira himself, as one of the Death Notes ends up in the hands of the Mafia, something that both sides consider the worst possible scenario.
** Also in the first arc when the [[JackTheRipOff Second Kira]] first appears L agrees to let Light work with the taskforce [[spoiler: to use one Kira to lure out the other in order to get evidence on both of them.]] Light finds this fortuitous because then he can keep tabs on both L and the Second Kira.
** The entire Yotsuba arc can be considered this, with Light and L working together to track down the new Kira. Light's temporarily turned good thanks to a MemoryGambit, but L accepts working with him despite still being suspicious of him.
* ''Anime/CodeGeass'' has Lelouch and Suzaku teaming up to get rid of the Kyushu invaders.
** Then a season later they team up again to [[spoiler: conquer the world, make themselves out to be two of the most hated people in history, dress Suzaku up as Zero after faking his death, then assassinate Lelouch in a highly public manner in order to bring about world peace.]] [[TheExtremistWasRight It worked.
]]
* Happened at least thrice in the first season of ''Anime/CorrectorYui'', where Yui and War Wolf had to teamwork to save either themselves or others. Also happened in the second season of the anime, with Yui and DarkMagicalGirl Corrector Ai.
* ''Franchise/LupinIII'': [[SympatheticInspectorAntagonist Inspector Zenigata]] is usually willing to team up with [[VillainProtagonist Gentleman Thief Lupin]] whenever it involves taking down a more clearly evil criminal (which is surprisingly often). This is implied to be main reason why he hasn't been fired yet.
* In Creator/EEDocSmith's ''[[Literature/SkylarkSeries The Skylark ''Anime/DragonBallZ'', Goku and Vegeta's alliance initially starts when they both team up to fight Frieza, the former to save the Universe, the latter because he wants to avenge his pride by defeating Frieza because he was used by him constantly. He ends up redeeming himself and forming a family with Bulma, though he maintains [[TheRival his rivalry]] against Goku.
** And before that, Piccolo joined Goku, and later the rest
of Space]]'', the cast to fight against the Saiyans. For viewers who joined the show at the start of the ''Z'' series, their past history with one another could easily be missed or forgotten.
*** For a while, ''Manga/DragonBall'' had a pattern where the main antagonist of the previous arc would team up with Goku against
the villain [=DuQuesne=] agrees to act as one of the party until they return safely to Earth, even though he wants current one, earning good guy status in the hero Richard Seaton dead. Ultimately Seaton [[spoiler:makes process. This started with Yamcha (who tries to rob Goku in his best friend hand BOTH first appearance) and continues all the way to Freeza, when Toriyama finally gave us a villain too evil to ever join Goku. Here is a list of some of the former villains who joined Goku, mostly through EnemyMine {{Heel Face Turn}}s: Oolong, Yamcha, Puar, Tien, Chao-tzu, Piccolo, Vegeta, Android #16, Android #17 (though he never actually met Goku before leaving off-screen shortly after his guns over turn), Android #18, Dabra (according to [=DuQuesne=] because [=DuQuesne=] is anime filler in Other World), Majin Buu, Nuova Shenron (in ''[[Anime/DragonBallGT GT]]''), and Abo and Kado (in the better shot, and then Seaton and [=DuQuesne=] stand side by side and mow down their common enemies until recent special which introduced Table to the world).
*** Actually, he made
all four guns are empty.]] In ''Skylark [=DuQuesne=]'', [=DuQuesne=] enlists Seaton's help in his friends by fighting an otherwise unstoppable alien menace them first, except for Roshi, Krillin and ends up [[spoiler:winning Lunch.
*** And Krillin was his training rival for a while.
*** Near
the war and saving Seaton's life in beginning of the process]], though by Android Saga, Krillin mentions this pattern when Bulma asks the guys why they don't just find Dr. Gero and stop him from ever creating the Androids. So long as they have a common enemy, Vegeta is less likely to revert to being a full-blown villain.
*** Cell actually forced quite a bit of this. Being an Android threat, he and the rest of them give Vegeta someone beyond Goku to kill. Later, Piccolo, after trying to kill 17 to keep Cell from absorbing 17, then decides to fight Cell, despite being weakened, to try to save 17. After Cell does absorb 17, Trunks and Krillin try to protect 18 from Cell, even if it means having to go through Vegeta to do so. It is then because of how dangerous Cell has become upon getting 18 that convinces the Z-Warriors to let 16 fight with them.
* Every
time [[spoiler:his reasons Gun for wanting Seaton dead no longer apply]]. The fact Hire Katana joins the rest of the Techode pilots in ''Anime/GadGuard'' to stop a rogue Gad from destroying everything it touches. Interesting in that each man at least respects half the other's abilities team (both girls, who met him under different circumstances) don't consider him an enemy. His adorable MoralityPet helps.
* ''{{Worldwar}}'', by Creator/HarryTurtledove. Aliens invade in 1942. The Axis are working with Impel Down arc in ''Manga/OnePiece'' was one big EnemyMine moment. [[spoiler:Luffy has infiltrated the Allies. Another one occurs between the Jews in Europe and the Race. Aliens who never figured out discrimination or Nazi Germany. Played with in the sense that they aren't quite sure who'd be worse for mankind. (The Jews play it both ways,[[HeelFaceRevolvingDoor working with the Race or the Germans depending on who's a bigger threat at the time.]])
* In ''Literature/WorldWarZ'', after the zombie outbreak Israel pulls back from the Palestinian territories and offers asylum to any uninfected Palestinian refugees, both sides agreeing to cooperate in the face of an apocalyptic disaster. When the outbreak is contained they form a permanent truce and Israel agrees to a two-state solution.
* In ''Literature/HarryPotterAndTheDeathlyHallows'', Narcissa Malfoy [[spoiler:helps Harry continue faking his death to Lord Voldemort
[[TheAlcatraz Impel Down prison]] in order to save her family.free his older brother who's being held on the lowest level. During the infiltration he ended up "teaming up" with two former enemies (Buggy the Clown and Mr. 3) who are constantly trying to go up and out, only seeing Luffy as a means to distract the guards. But, through various mishaps they end up falling down to the lower levels anyway and find themselves forced to co-operate in order to stay alive.]]
* Literature/TheRiftwarCycle has a few:
** In ''A Darkness at Sethanon'', [[spoiler:In Level Six of the Heroic Prince teams up with the former EvilChancellor to defend a city against the TheHorde.
** In ''Honored Enemy'', a band of Kingdom raiders allies with a Tsurani patrol in order to survive pursuit from a [[AlwaysChaoticEvil Moredhel]] company. The story plays during the war between the Kingdom and the Tsurani and revolves around the tension this causes.
** In ''VideoGame/BetrayalAtKrondor'', the moredhel chieftain Gorath seeks out Prince Arutha to curb another upcoming invasion that he feels would be too costly for his people.
** In the Chaoswar Saga, the final trilogy, an enemy shows up who is so dangerous that the God of Evil comes in on the side of Good.
* The ''Literature/{{Animorphs}}'' only
prison: Luffy teamed up with their main enemy, Visser Three, twice: to defeat a race of annoying, psycho, tiny-tiny-tiny aliens Crocodile. Let me say that again: ''Luffy'' teamed up with a shrink ray and a mass Napoleon Complex, and '''''Crocodile'''''. This is another one-sided Enemy Mine situation, though. Crocodile's willing to escape from a bunch of mutated blue fish-people work with Luffy, but he's evil enough that want Luffy is highly reluctant to kill take him along. Mr. 1 also joins them, but Luffy never met him before, and stuff them for their DerelictGraveyard. On doesn't know who he is. Of course, Impel Down is [[HellholePrison such an awful place]], if ''anything'' warranted an EnemyMine with ''any'' of Luffy's old foes, ''this'' would.]]
*** Taken UpToEleven in
the other hand, Visser One freed them from Visser Three's prison in her very first appearance. Since Whitebeard War arc. [[spoiler:Crocodile protecting Luffy, fighting alongside the Animorphs are guerrilla fighters Whitebeard pirates, and Visser One is generally being the main advocate for a stealth invasion (and her host closest thing to altruistic he's ever been thus far. Buggy fights on Luffy's behalf (even if Luffy forced him into it). This war is [[spoiler:Marco's mom]]), absolutely crazy in the temporary partnerships it has formed.]]
** Earlier on, Luffy's crew, the Galley-La company, and the Franky Family, despite having fought in a three-way battle before, team up when they realize that
they're not unwilling facing the same enemy, albeit for different reasons (rescuing Robin, dealing with Iceberg's assassins and preventing Pluton's revival, and saving Franky, respectively). Then again, the Galley-La crew had been fighting the Straw Hats under the mistaken belief that they were responsible for the attempt on Iceberg's life, which they just realized.
** Luffy and his crew have also had
to accommodate her if team up with Smoker and Tashigi a few times due to circumstance, once during the Alabasta Arc and once in [[spoiler:Punk Hazard]]. Though it hurts Visser Three's credibility -- but should be noted that they're [[HeroAntagonist not unwilling to use it as an excuse to double-cross her, either...
** In ''Elfangor's Secret'', the Ellimist and Crayak both agree
villains per se]], just Marines that would very much like to capture the Time Matrix should not be in Straw Hats.
*** During
the hands of a mere mortal and help the Animorphs stop Visser Four.
** In the last few books, they team up with Tom and his followers in order to hijack the Pool Ship. Both sides then double-cross each other, but the Animorphs end up winning in the end.
** In ''The Andalite Chronicles''
Punk Hazard arc, [[spoiler: there's a brief few minutes where Elfangor actually ''two'' Enemy Mine situations: the Straw Hats form an alliance with Trafalgar Law (and by extension, his crew) to capture Caesar Clown and take down one of the future Visser Three (then only Visser Thirty-Two) Yonko (Kaido, to be exact), and both groups end up teaming up with Smoker and Tashigi again, this time to rescue the children Clown had kidnapped and escape the island safely.]]
* In ''Manga/RanmaOneHalf'', several Enemy Mine alliances emerge among the various members of the LoveDodecahedron. Shampoo, Ukyō and Kodachi regularly
team up against any external threat to escape certain death.
* In ''The Other Wind'',
Ranma (or a new potential suitor). Ranma himself teams with Ryōga and Mousse against Prince Herb. Ranma and Ryōga do this often enough that they inch into FriendlyEnemy territory by the last (so far) end of the series.
** And inverted with Ryōga and Mousse
in Creator/UrsulaKLeGuin's ''Literature/{{Earthsea|Trilogy}}'' series, representatives of four cultures normally at loggerheads - if not outright enmity - have to pool the anime: although they aren't enemies when they initially team up against their respective mythological knowledge in order to figure out common enemy Ranma, by the truth end of the episode, they work so poorly together that they can't stand each other. The fact that Mousse is far more ruthless than Ryōga, and also has no qualms whatsoever about an ancient evil.
hurting others to get rid of Ranma -- even Akane Tendō, Ryōga's [[AllLoveIsUnrequited oblivious crush]] -- does not help matters.
* In the ''[[Literature/HonorHarrington Crown Three-Tails filler arc of Slaves]]'' sub-series ''Manga/{{Naruto}}'', Naruto ends up working with [[spoiler:Guren]] to [[spoiler:escape the inside of the ''Honorverse'', Victor Cachat and Anton Zilwicki are two intelligence operatives from the warring Star Empire of Manticore and the Republic of Haven (Formerly People's Republic of Haven). They team up to investigate Mesan intrigue and how it impacts the war. It's implied this sub series may lead to a Grand Alliance...
** Really, by now it's evident
Three-tailed beast]]. The fact that The Climactic Conflict will be between the Andermani/Havenites/Manticore/Maya/Beowulf/Torch/others versus the frikkin' huge Solarian League (minus bits like Maya)/Mesa/whatever else we haven't seen yet. It promises to be ''awesome''.[[note]]Though in context, Manticore and (post-Theisman Coup) Haven are natural ''allies'', particularly considering how vehemently they both of them enforce have an interest in [[spoiler:Yukimaru's welfare]] and neither wants to see the Cherwell Convention. Now that Akatsuki get the beast helps, too.
** This is also
the reason for the war -- the PRH's expansionist policies -- is gone, the true Republic has been restored, and all the diplomatic snafus are cleared away, it would have been more surprising if they ''hadn't'' allied together.[[/note]]
** As of ''Mission Of Honor'', [[spoiler:Manticore and Haven have signed both a peace treaty and a military alliance]].
* In the ''TheEternalChampion'' story by Creator/MichaelMoorcock, humanity has unified solely because
very existence of the presence of the alien Eldren. Ekrose, the protagonist states that, absent the Eldren presence, humanity would be at war with itself. This is a key reason for his decision to [[spoiler:kill the entire human race]]
* Creator/TadWilliams' ''Literature/{{Otherland}}'' CyberPunk novel series has a prominent example of this in the fourth book. After PsychoForHire John Dread usurps control of the Otherland network, CorruptCorporateExecutive Felix Jongleur, who up until now has regarded the heroes as an annoyance (if he was aware of them at all), finds himself on equal footing with them: trapped in the network and [[BroughtDownToNormal unable to use his godlike powers]].
* This is a major part of the plot of all 3 novels in CS Friedman's ''{{Coldfire|Trilogy}}'' trilogy: an immortal vampire and a priest team up to fight mutual enemies. [[spoiler: By the end of the novels, the priest has been thrown out of his church and the vampire's patron Dark God has rescinded his immortality and cast him into Hell for being insufficiently evil. Turns out saving the world isn't compatible with maintaining that black-as-a-moonless-night karma, who knew?]]
* ''Literature/TheHobbit''. The dwarves are about to fight a battle with the Lake-men and Wood-elves to determine who will gain Smaug's treasure. Gandalf appears and warns them that an army of goblins and wargs is approaching, and they must join
shinobi alliance, rival nations working together to fight stop [[spoiler:[[EvilFormerFriend Obito Uchiha]] from executing his [[AssimilationPlot moon's eye plan]]. Though by the evil attackers.
end the alliance is in FireForgedFriend territory, as fighting on the same side made most of them (including the leaders) realize that they're NotSoDifferent.]]
** Even Kurama joins in. He even spells it out [[LesserOfTwoEvils loud and clearly]]. [[spoiler: Then he [[HeelFaceTurn befriends Naruto for real]], making both of them stronger.]]
*** A similar situation happens in TheMovie, with Naruto quoting the proverb in response to Kurama offering to help him battle [[spoiler:his AlternateUniverse equivalent]].
* In ''Literature/{{Dragonlance}}'', black robed mages ally themselves with the good guys every now and then, for example to drive off the Dark Queen in ''Literature/TheLegendOfHuma'' and during the War one of the Lance. ''Dragons of Summer Flame'' was based around this trope. Also Fistandantilus and ''LightNovel/HaruhiSuzumiya'' short stories, the Kingpriest used each other for their own goals.
* In ''Literature/TheLegendOfDrizzt'' Drizzt Do'Urden and Artemis Entreri must
SOS Brigade has to team up and fight back with their perceived rival club the Computer Society, in order to back in an effort to get out stop the plans of the Underdark at one point.
* It is briefly mentioned in
[[PunchClockVillain nefarious]] StudentCouncilPresident from evicting the ''TabletopGame/{{Warhammer 40000}}'' novel ''Literature/GreyKnights'' that the underhive gangs of Volcanis Ultor "buried Brigade from their enmities for one long night" to do battle with a powerful gang of Chaos followers.
clubroom.
* ''Literature/{{Twilight}}'': The Cullens ([[FriendlyNeighborhoodVampires Vegetarian Vampires]]) and the Quilettes ([[FurAgainstFang Werewolves born to kill vampires]]), had to work together to destroy an army of newborn vampires that were killing people Occurs twice in general and wanted to kill Bella Swan ''Manga/KenichiTheMightiestDisciple'', in particular.
* ''Franchise/StarWars'':
** While most of the clone troopers went on to serve the empire, the True Mandalorians
Kenichi's last battles against Hermit (a.k.a. [[spoiler:Natsu Tanimoto]]) and Boris Ivankov. Both times, a problem occurred to interrupt the group that nearly destroyed battle, and Kenichi would team up with the Galactic Republic 4,000 years ago) fought alongside person he had been fighting moments ago to resolve it, mostly because one party (Hermit in the rebels to retain first, Kenichi himself in the second) didn't want their heritage opponent to get injured and thus be unable to finish the battle. Naturally, the instant the problem is resolved, both cases have Kenichi and his enemy resume the battle, but [[HeelFaceTurn Hermit at least would later become a full-time ally]] (Boris may do so as well as in the future, but for now, he's been PutOnABus).
** The most recent arc has had [[spoiler:Akira Hongo, YAMI's "God Fist"]] joining forces with Ryozanpaku to get revenge on YAMI's "Demon Fist" [[ManipulativeBastard Silcardo Jenazad]] [[spoiler:[[MoralEventHorizon for using him to almost
kill those who had betrayed their own kin.
** ''Literature/FateOfTheJedi'': Jedi
Kenichi]] during his fight with Sakaki (which Silcardo did for the purpose of kidnapping Miu to brainwash her into a FaceHeelTurn)]]. Not only that, but [[BigBad the "One Shadow" leader of YAMI]] even gets in on the act, albeit not directly; in his case, though, the team-up is somewhat justified [[spoiler:[[PapaWolf because he's Miu's father]]]].
* Sara
and the LostTribe of the Sith form an alliance (in the titular ''Allies''), to investigate Space Squadron make amends with Mariette and subdue a feminine EldritchAbomination named Abeloth. The arrangement her Gambee pilot brigade (sorry, but it doesn't last long, but it does allow Luke's son Ben to pick up have a [[DarkActionGirl Sith Apprentice Girlfriend]]...
** Speaking of ''Literature/FateOfTheJedi'', Apocalypse reveals that the Father, the Son,
name and the Daughter had fought against Abeloth multiple times after she got corrupted. The mere fact that the Son, who is the embodiment of the Dark Side, would ally himself with the Daughter, who is the embodiment of the Light Side, even when they would more often than not fight each other to the death had it not been for the Father's influence would imply that both common {{fan nickname}}s exceed this trope came into play.
** ''TheThrawnTrilogy'': Mara Jade sees her having
wiki's age rating) to constantly work with Luke as this trope, especially with that [[KillMeNowOrForeverStayYourHand not-so-covert wish to kill him]]. He doesn't see it defend the same way, though. At Libertad in the end of ''Anime/StrainStrategicArmoredInfantry''.
* In
the trilogy, they've become FireForgedFriends, and by finale of ''Anime/NightWizard'', after spending the ''Literature/NewJediOrder'' series, they're a married BattleCouple.
** ''Literature/TheTruceAtBakura'' is
entire show chasing the heroes, Bell Zephyr ends up fighting alongside them to defeat the true BigBad.
* Pixie Misa does
this trope personified, with twice in ''Mahou Shoujo Anime/PrettySammy''. In the Imperials '''same episode'''. Misa and Sammy also team up briefly in the second and third [=OVAs=].
* All the non-Shinryuuji Naga players on Team Japan and Agon in ''Manga/{{Eyeshield 21}}''. And to a lesser degree, all the non-Hakushuu Dinosaurs players and Gaoh (especially Kid, Hiruma and Banba).
* At one point in ''Anime/EurekaSeven'', [[KidHero Renton]] and [[AntiVillain Dominic]] are
forced to work together to save Eureka and Anemone.
* Two examples from ''Manga/SoulEater'':
** In order to further her plans, Medusa joins forces
with Shibusen and leads a team to infiltrate Baba Yaga castle, the Rebels to defeat Arachnaphobia base.
** Werewolf Free and shinigami Death
the evil Ssi-Ruuk. [[spoiler:Once it becomes clear Kid fight Mosquito together. Neither are happy about the idea.
* During a match in the individual tournament in ''Manga/{{Saki}}'', everyone in the table gangs up on Saki, despite one of them being her own teammate (although said teammate mentally notes
that the aliens they are in retreat, the Empire reverts back to their evil selves competition with each other and re-declares war on the Alliance.Saki promised not to hold back). [[spoiler:It doesn't work.]]
** A couple of times In ''Manga/SakiAchigaHen'', this happens in the ''Literature/NewJediOrder''. semi-finals, when Toki, Kirame and Kuro go up against Teru, the champion of the mahjong tournament, in order to avoid going below 0 points, resulting in some unspoken cooperation between Kirame and Toki, with Kuro unwittingly helping by preventing Teru from getting dora and making it more difficult for her to increase the value of her hands. In ''Conquest'', Anakin Solo teams the end, [[spoiler:Kuro breaks Teru's winning streak, and while Teru ends the first round with an overwhelming lead, it's eventually reduced to the point at which her school barely advances]].
** A more complicated example comes up in Kiyosumi's turn at the semi-finals. At the start of the third round, Rinkai and Himematsu have a comfortable lead, while Kiyosumi is a distant third, and Usuzan is dangerously close to being eliminated. Knowing that if Usuzan goes under while Kiyosumi is still in third place, they'll both be eliminated, Hisa decides to protect Usuzan's points while winning off Himematsu and Rinkai. Unfortunately for Hisa, Usuzan's third player realizes that it's just as advantageous to win off Kiyosumi as the other two.
* In ''Manga/FullmetalAlchemist'', Envy works briefly with Ed and Ling when they have to get out from Gluttony's stomach.
** Then he goes OneWingedAngel and tries to kill them...
*** Which was ''before'' Ed had realized that he could get them out.
** Ed joins forces with [[spoiler: Greed-- albeit under the condition of "working for" him-- after Greed [[HeelFaceTurn splits off from the Homunculi.]]]]
** Scar joins
up with [[ScaryDogmaticAliens Yuuzhan Vong]] warrior Vua Rapuung the protagonists when they have to rescue defeat Father. Envy lampshades the absurdity of it all. "''What?! You're friends now? You guys are no fun at all! Ugh! What happened to trying to crush each other's windpipes?!''"
* In ''Manga/{{Spriggan}}'', Spetsnaz officer Victor Shutrov (or Stolov, based on the Singaporean English translation) tries to kill Japanese KGB agent Koichi Moroha when he learns of
his friend Tahiri from a MadScientist who is also Rapuung's enemy (and ex-lover). In plan to dominate the last book, ''The Unifying Force'', Han Solo world via the Fire Shrine and Boba Fett find themselves briefly fighting side-by-side against Vong warriors. Finally, at not on behalf of the very USSR, helping Yu somewhat. He's killed later, not being able to stop the renegade agent. Yu and Jean team with two of their enemies near the end of the series, a subversion comes into play- Nom Anor, RecurringBoss for most manga. They consist of Iwao Akatsuki, ex-Trident Corporation commando, and Bo Brantz, ex-Neo Nazi and ninja, to defeat Larry Markson from using the series, allies with natural energy of Gaia in the heroes only out of a selfish sense of self-preservation, South Pole.
* In ''Manga/{{Berserk}}'', Guts
and immediately tries to flush them out Zodd have an airlock [[CrowningMomentOfAwesome AWESOME one of these]] when he feels they've outlived their usefulness. For his part, he 'does'' eventually [[BecomingTheMask Become the Mask]] of the Prophet, and genuinely leads an uprising of the Shamed Ones (who have come to view the Jedi as saviors) they temporarily [[spoiler:team up against the rest of Emperor Ganshika, who is a giant fog/storm cloud apostle. Naturally, they do it in the Vong.
** In ''Iron Fist'', one of
most badass way they can. Schierke finds Ganshika's "core", the ''Literature/XWingSeries'' novels, Admiral Rogriss of the Empire offers a temporary unofficial alliance with Solo and his fleet to hunt down Warlord Zsinj, and then, only really physical spot in his words, they can go back to their personal ideological differences without inviting anyone else to play.
** During the ''Literature/HandOfThrawn'', Grand Admiral Pellaeon is of sufficient power
apostle form, but says that when he states it's time only a powerful magical weapon can do anything. Guts has been slaughtering demons, apostles, and other nasty spirits every single day and night, for the Empire to sue for peace with the Republic, ''they sue for peace''. However when a conspiracy led by Moff Disra of Bastion, his Dragon ([[spoiler: a stormtrooper modified with [[MagnificentBastard Thrawn's strategic skill]]]]), and a con artist posing as a resurrected Thrawn threatens the entire process, Pellaeon works ''with'' agents of the New Republic to help foil the diplomatic crisis engineered by Disra.
*** Additionally, Baron Fell attempts to recruit Luke and Mara as representatives of both powers into forging the exact same sort of alliance with the Chiss against a major undisclosed threat Thrawn had spent his time in "exile" along the Outer Rim preparing to fight, [[spoiler: which turns out to be the Yuuzhan Vong]].
* ''Literature/ASongOfIceAndFire'' has some interesting ones. Jaime Lannister and Brienne of Tarth are forced to coexist when Catelyn Stark sends Brienne to trade Jaime for Sansa, but though they start out quite hostile, they've reached a point of sort-of friendship and mutual respect (and [[ShipTease maybe more]]). A more hostile camaraderie briefly exists between Sandor Clegane and Arya Stark; she still hates him, sure, but when it comes down to it they work well together, and she's probably more like him than she'd like to acknowledge. On a larger scale in ''A Dance with Dragons'' [[spoiler: the wildlings and the Night's Watch agree to work together against the Others. Many of them aren't happy
about this, rendering three years straight, with his BFS and so all that pain and hate has made it a magical weapon. Zodd, in demon form, lets Guts ride on top of him, and they use the alliance extremely tenuous.Dragonslayer to ram Ganshika's 'core'.]]
** While they never actually get round to fighting, Stannis Baratheon makes it clear he views Robb Stark as just as much of an enemy as BigBad Joffrey Baratheon. By Book 5, Robb has been betrayed and killed by some of his own soldiers, while Stannis' forces have been decimated. Subsequently, * Even though catching the Northern soldiers who remain loyal Kaitou Kid is one of ''Manga/DetectiveConan'''s chief aims, second only to busting up the Starks join Black Organization, Conan often ends up working together with Stannis.
** On the outbreak of war, the Tyrells initially throw their support behind Renly Baratheon. When Stannis assassinates Renly, they jump ship
Kid to Joffrey catch bad guys or otherwise avert disaster, especially in his Non Serial Movie appearances. (For that matter, he has occasionally worked together with Black Organization agents against other Black Organization agents, as well.) His TV-special team-up with Lupin III would probably count as well.
* [[NobleDemon Kougaiji's]] [[MinionWithAnFInEvil team]]
and the Lannisters in order to take revenge on Stannis.
* Reversed in the ''Franchise/StarTrekExpandedUniverse''. In the wake of the Borg invasion, several previously non-aligned minor enemies such as the Tholians join the Typhon Pact in order to leave the Federation and Klingon Empire surrounded by a hostile power. The Tholians, well-known for xenophobia, join for
Sanzo party do this reason ''alone''.
* The DaleBrown novel ''Air Battle Force'' culminates
or help each other out in [[spoiler: the Taliban detachment some way so often in ''Manga/{{Saiyuki}}'' that served as primary enemy of that book]] working Kougaiji's "it would be unfair to attack you now but next time we will get the scripture" is met with Turkmen and American forces against the Russians, which continues into ''Plan of Attack''.
** ''Edge of Battle'' has [[spoiler: Zakharov and Task Force TALON]] reluctantly cooperating after Comandante Veracruz's double-cross, though it doesn't last.
** ''Strike Force'' is centred on an Iranian coup leader and former enemy of Dreamland who now needs their help. The blurb tells you as much!
* ''A Pict Song'' by Creator/RudyardKipling. "No indeed! We are not strong, But
"yeah, yeah we know Peoples that are...know."
* ''The White Rose'' ** Happens accidentally with comedic villain Zakuro. Goku--who wasn't around for Zakuro's first appearance and has no idea who he is--helps him when he's passed out from hunger, and Zakuro tries to repay him by Glen Cook. defending him from a group of random youkai thugs. Zakuro is ''horrified'' when he realizes who Goku is, especially when the rest of the party show up and cheerfully tell the youkai that Zakuro has totally come over to their side.
*
In the final battle the Lady -- sorceress leader 3 chapters of the northern empire -- needs the help of the white rose to take down the dominator, her husband and a much better sorcerer. The white rose creates a area where magic cannot be used and therefore is vital to taking down the greatest sorcerer in known history.
* In ''[[Literature/TheIcewindDaleTrilogy Streams of Silver]]'', Drizzt Do'Urden and Artemis Entreri declared a temporary truce in order to join forces against a common enemy (the [[AlwaysChaoticEvil gray dwarves]] inhabiting Mithral Hall). Some time later, in ''[[Literature/LegacyOfTheDrowSeries Starless Night]]'', Catti-Brie and Entreri teamed up to rescue Drizzt from the drow, who were holding all three of them captive and who would have eventually executed both Drizzt and Entreri. (Or condemned them to a FateWorseThanDeath.)
* ''Literature/ArtemisFowl'' and Holly do this in ''The Arctic Incident'' and ''The Eternity Code'' -- they are opponents, or at the very least rivals with a sore history, even though they have both saved each others' lives. In ''The Arctic Incident'', they cooperate as part of a deal: Artemis uses his above-world influence to investigate a smuggler, while the LEP use their advanced technology to help rescue Fowl Senior. In ''The Eternity Code'', their relationship is more tense as they cooperate to resolve a situation Artemis is partly to blame for. By ''The Opal Deception'', they are friends, and later [[ShipTease possibly more than that]], though that does not go anywhere.
* A complicated example occurs in the "Richard Bachman" (actually Stephen King) novel ''Literature/TheRegulators''. The demon Tak is possessing a young autistic boy, and is somehow using the boy's unique mind to augment and give shape to its supernatural power. Both the boy and the demon are fans of cheap westerns and a Power-Rangers style TV show, both of which the demon uses as inspiration for his means of destroying the town. In the show-within-a-show, the heroes team up with their enemy to stop a something from destroying Earth. Tak channels this as the final assault on the protagonists.
* [[TheHero Sam]] and [[BigBad Caine]] of the ''Literature/{{Gone}}'' series (who are ironically brothers) have teamed up ''twice'' during intervals of trying to kill each other;
** They teamed up in ''Hunger'', against [[TheDragon Drake Merwin]]. Sam wanted him dead because he tortured him senselessly and this was enough to piss even ''him'' off, and Caine's motive was spontaneous rage for him trying to his [[UnholyMatrimony girlfriend]] [[TheDarkChick Diana]].
** In ''Lies'' they have reluctantly paired up again to murder [[spoiler: Caine's daughter.]]. They fail miserably, but it's a awesome fight scene.
* This is how [[Literature/VorkosiganSaga Miles Vorkosigan's]] parents got together, in ''Shards of Honor''.
* In Creator/RobertEHoward's ConanTheBarbarian story "Literature/RoguesInTheHouse" after Murilo and Conan have broken into Nabonidus's house to kill him, and find that he is not, after all, the BeastMan, they ally with him to deal with it.
* In ''Shattered Sky'', the third book in the ''Literature/StarShardsChronicles'' trilogy, the good guys team up with [[spoiler:Okoya, the villain of the second book]] to defeat a greater enemy that threatens to destroy the universe.
* In ''Literature/TheTrailOfCthulhu'', it's revealed that Professor Shrewsbury and Hastur (presented here as Cthulhu's [[CainAndAbel rival brother]]) have struck an alliance to keep Cthulhu from waking up.
* In Literature/TheDresdenFiles series, Harry
''Manga/{{Psyren}}'', Yoshina Ageha teams up with Lara Raith multiple times over the course of the series to help them reach mutual goals.
** They do this quite often in fact, to the point at one instance Lara indicates quite clearly she would rather [[IsThatWhatTheyreCallingItNow rule]] with Dresden together than for them to keep fighting each other.
*** Harry has shown that he finds it particularly (or at least very) difficult to resist her, and has even used this fact to taunt a mutual enemy, one of her cousins with whom she shares a bitter rivalry. It was later revealed in Cold Days that
[[spoiler: if Kincaid had refused to kill him in Changes, his second choice would have been to go OutWithABang at her...um, ministrations.Amagi Miroku against Mithra.]]
** He does * In ''Manga/InuYasha'', anytime Inuyasha and [[AloofBigBrother Sesshomaru]] team up, this even happens, though at the end of each scenario Sesshomaru walks off just a little more with crime lord John Marcone; it eventually gets to the point where they've had common goals so often, they're more enemies in principle of an AntiHero than practice.
** The novel ''Turn Coat'' is one long, extended Enemy Mine sequence between Harry and his former nemesis Donald Morgan, who finds himself needing Harry's help to survive.
before.
* In the ''Literature/CodexAlera'' series, the Canim have Gadara, meaning "trusted enemy". Gadara can often work together, as final episode of Manga/GiantRobo, [[spoiler: Tavi Alberto]] suddenly appears to rescue Daisaku. He deems it necessary to point out he hasn't made a HeelFaceTurn, it's just that they have a mutual enemy.
--> '''[[spoiler: Alberto]]''': Let's get something straight, kid. I'm not doing this to help you, your buddies, or because saving humanity gives me a warm fuzzy feeling. I may not be privy to all the deep dark secrets behind this covert operation, but I'm positive about one thing: I will be DAMNED if I watch from the sidelines while [[BigBadWannabe this megalomaniacal adolescent]] determines the outcome of the world! [[TheOnlyOneAllowedToDefeatYou That fate will be decided at another place
and Varg]] eventually do.
** The trope is carried much further
time, in a final showdown between Big Fire and you IPO vigilantes!]]
* In {{Sekirei}}, [[PragmaticVillainy Higa of the East]]'s repeated attempts at violating the rules of the game drive [[FairPlayVillain Mikogami of the South]] to come to the rescue of [[TheHero Minato]] on more than one occasion.
* ''Manga/AttackOnTitan'' discusses the whole idea of the whole of humanity settling its differences
with the appearance of [[spoiler:the Vord]], which allows the First Lord to forge tentative alliances with all of Alera's long-standing enemies each other to fight together a common enemy, finding it overly optimistic. Indeed, even in the story, with humans on the brink of extinction against the new opponent. In fact, the First Lord ends up saying [[spoiler:the Vord]] was the best thing to happen to Alera.
* In ''Series/TheManFromUNCLE'' novel ''[[http://www.amazon.com/dagger-affair-Man-U-N-C-L-E/dp/B0007KDMFI The Dagger Affair]]'' by David [=McDaniel=], UNCLE and THRUSH operatives work together to stop DAGGER, a new organization armed with advanced science. In the end a THRUSH-controlled fighter jet kamikazes the DAGGER base, using sheer momentum to overwhelm its force field. There's a poignant moment where the leader
such an enemy, [[SubvertedTrope there's]] [[WeAreStrugglingTogether still plenty]] [[TeethClenchedTeamwork of THRUSH reminds the leader of UNCLE of their former friendship and gives him a copy of ''Literature/NineteenEightyFour''. Then he ends the truce ahead of the agreed time, not that anyone expected anything else. We also discover that the full name of THRUSH is the somewhat unwieldy "Technological Hierarchy for the Removal of Undesirables and the Subjugation of Humanity".
* In the second book of the ''Literature/{{Mistborn}}'' trilogy, Vin finds herself working with an enemy - [[spoiler:Ten-Soon, who had assumed the identity of Ore-Seur, and had been working on behalf of Straff Venture.
infighting.]]
* ''Manga/{{Bleach}}'':
** Then there's [[StalkerWithACrush During the Watcher]], who is first introduced when she notes that she missed fighting with that one guy who is probably an assassin but hasn't seriously tried to kill anyone yet. His first proper appearance is him saving her life from battle for Karakura Town, the sidelines as she hadn't realised one of her opponents had Atium.
* This happens in ''Literature/ThePathToWar'' where Tahniya is soul bound to Zan as punishment; they can't stand each other.
* Bertie Wooster and [[spoiler:Sir Roderick Glossop]]
Visoreds team up in ''[[Literature/JeevesAndWooster Thank You, Jeeves]]'' and end up getting along very well, even exchanging invitations to lunch. Bertie notes that he can't be all bad, since he [[spoiler:beat up Chuffy's BrattyHalfPint cousin Seabury]].
* This
with the Shinigami, despite having once been exiled from Soul Society, because Aizen is the plot of Creator/HarryHarrison's ''Stars and Stripes'' AlterhateHistory trilogy. After the British declare war on the Union, reason they accidentally sack a Confederate town instead of a Union fort (the stars-and-bars flag confuses them). In response, were exiled. However, they make it clear to the Union Shinigami that they're not Soul Society's allies. They are there because Aizen is their enemy and Ichigo is their ally. Upon Aizen's defeat, the Confederacy agree to a cease-fire and, eventually, the Confederacy re-integrates Visoreds are accepted back into the USA Soul Society.
** Hollows are enemies of Humans, Shinigami
and abolishes slavery in the face of the British Empire. One of the main criticisms of the trilogy is how easily this happens without too many problems.
* The alliance of the outlawed Malazan commander Dujek Onearm with his enemy Caladan Brood
Quincies, and Aizen recruits Hollows to fight against Soul Society. In the [[OmnicidalManiac omnicidal]] Pannion Seer in final arc, the third volume of ''TheMalazanBookOfTheFallen''. [[spoiler:It later turns out that Dujek's outlawry was a XanatosGambit by Malazan Empress Laseen to win Caladan's support for the war.]]
* In Creator/TomKratman's ''Literature/{{Caliphate}}'', in spite of a continuing state of low-level conflict between them, the [[ExpandedStatesOfAmerica Imperial States of America]] and the Celestial Kingdom of the Han (China) work together to eliminate a significant [[spoiler:bioweapon]] threat posed by the eponymous Caliphate.
* ''Literature/LegacyOfTheDragokin'' has three examples:
** The premise is Baalaria and Drewghaven teaming up to quell raiders produced by civil unrest.
** Zarracka and [[spoiler: Mordak]]
surviving Hollows from Aizen's war with Soul Society, team up because they both hate Daniar.
** [[spoiler: Everyone still alive joins forces against Kthonia.]]
* In AndreNorton's ''Literature/{{Catseye}}'', faced with Troy's suspicion, Rerne proposes that they join forces against a common foe.
* A typical strategy in ''TheHungerGames'', especially used by the Careers. Involves forming alliances with one or more other tributes to help each other, stay alive longer, and maybe take out other tributes. But of course, these can only be temporary, since the pool of remaining tributes gets smaller and smaller... There's only ''one'' victor, after all.
* In Creator/JulieKagawa's ''Literature/TheIronDaughter'', Ironhorse allies with Meghan because he considers the Iron King to be false.
* In ''Literature/APassageToIndia'', which is set in the [[UsefulNotes/TheRaj British Raj]], the religious divisions among native Indians - particularly those between Hindus and Muslims - are only set aside when they find themselves both in conflict
with the ruling British authorities. As Dr Aziz says to [[AuthorAvatar Cyril Fielding]], "We may hate each other, but we hate you more."
* In ''Literature/TheHouseOfNight'', Aphrodite and Zoey start out with an ArchEnemy relationship, which ends up morphing when the two of them need each other and have a common enemy. Zoey and Aphrodite frequently have JerkassHasAPoint moments.
* ''Unintended Consequences'' by Stuart Woods has BigBad Ivan Majerov attempt to take over the assets of Stone Barrington through many means, including Stone's murder. He doesn't succeed. The following book, ''Doing Hard Time,'' shows his men with roots in TheMafiya plotting to hurt Stone's son, Peter, as revenge. They make the fatal mistake of thinking fugitive-in-hiding Teddy Fay (a serial killer with various skills, including flying planes and speaking Russian) overheard them and try to take him out as well. Teddy kills them, points out their intents to Peter, and takes it on himself to protect the younger man. He leaves behind two other bodies as well before meeting Stone (and finding out Majerov's [[TheDragon second,]] Vlad, aka [[NamesToRunAwayFromReallyFast "The Viper"]] has also arrived, and the two men put together a plan to take both Russians out of the picture permanently. [[spoiler: Teddy is able to kill The Viper in his room with a bullet, and poses as a pilot to kill Majerov himself with a syringe of potassium. As this saves Peter's life, these acts later lead to Stone using his pull with President Will Lee to arrange for a presidential pardon for Teddy.]]
* The point of the ''Literature/LeagueOfMagi'' story "Wait," and ultimately subverted when [[spoiler: one of them kills the other.]]
* In ''Literature/LastSacrifice'', Rose teams up with [[spoiler:Victor Dashkov]] against the mysterious assassin of [[spoiler:Tatiana Ivashkov]].
* The end of the first book of the ''Literature/AhrimanTrilogy'' features the hero teaming up with a man whose entire job is hunting down and killing mages like him.
* Happens in the backstory of ''Literature/RememberToAlwaysBeBrave'', and shown in with the prequel ''{{Literature/Cilva}}'', the Roman Republic is called in by the Alliance to aid an uprising in Zesan/Azania's capital city of Cilva. It's not a trap, but its not really an uprising either. It is mused on as a total wreck of a battle. Later on in Remember To Always Be Brave, the Roman Republic and the Alliance of Nations unites [[spoiler:
Shinigami to fight the Tenebrae invaders, and Corna turns on the Tenebrae after they use a cult base as a experiment ground for their biological terror weapon.]]
* Of a sort in ''Literature/{{Insurgent}}'', Cara extremely dislikes Tris [[spoiler:(due to Tris [[ShootTheDog shooting a brainwashed Will]]]]) but is fully willing to assist in Tris's plans. She even admits to Christina that logically, Tris did what had to be done.
* In ''Literature/TheEmpressGame'', it gets complicated. Blame for the conquest of Ordoch can be attributed
Quincies, who have conquered both to Hueco Mundo, the IDC (which planned it) Hollows domain, and to Dolan (who led the Empire there in Soul Society, the first place). Kayla, an Ordochian, is willing to work with an IDC team while opposing Dolan, since she thinks there's a possibility of freeing Ordoch that way. [[spoiler:Meanwhile, Tia'tan is pursuing the same objective by Shinigami domain. They are also working with Dolan against the IDC team. She Humans, such as Ichigo's group and Kayla each accuse the other of being a traitor on account Fullbringers. Eventually, even some of the alliances they made. When they work past that, they team up themselves.]]
* In ''Literature/ThePillarsOfReality'', Mari and Alain start out thinking of each other as enemies who have to work together to survive. As they get to know each other, however,
Quincies switch sides when they begin to realise what Yhwach's plans really are. [[AGodAmI Yhwach]] is such a threat to existence itself, he's basically uniting all four enemy groups, and any exiles from those groups, against him.
* At one point in ''LightNovel/FullMetalPanic'', [[TheHero Sousuke]] comes upon [[BigBad Leonard]] and pulls his gun -- but Leonard points out
that they're only enemies both in the first place because each of same predicament (trapped in an old laboratory by rubble) and proposes they call a temporary truce and work together to dig themselves out, to which Sousuke agrees. During this time Leonard tries to talk Sousuke into joining his side, but is (obviously) unsuccessful; the truce lasts until they get back to their respective Guilds are either wrong or lying about HumongousMecha.
* In episode 3 of ''Anime/BladeAndSoul,''
the other.Pleasure Gang saves Alka from the BountyHunter, Hazuki, trying to collect on a bounty of 7000 gold from the Palam Empire. Their leader, Dan Roana, has no love for Palam either, and many of their friends and relatives were killed by them, so she suggests they work together to get their payback.
* This happens far more than it should in ''Manga/ZettaiKarenChildren'', where [[TheHero BABEL]] and [[BigBad PANDRA]] team up on occasion, mostly when fighting [[spoiler: Black Phantom]]. Also happens in ''Anime/TheUnlimitedHyoubuKyousuke'', where they team up to defeat the USEI.
* In ''Animation/GuardianFairyMichel'', episode 14, with both Salome and Michel kidnapped, has Kim and the Black Hammer Gang work together to free them.
** Episode 23 has a long-dead evil pharaoh with magical powers arising to kill the heroes, forcing Michel and Salome to team up against him.
* Natsu and [[spoiler:Gajeel]] teaming up against Laxus in ''Manga/FairyTail'', though it's more "rival mine" since they were supposed to be in the same guild by then.
* Gainax's teaser for the ([[WhatCouldHaveBeen never-realized]]) second season of ''Anime/PantyAndStockingWithGarterbelt'' suggested that, after the ShockingSwerve GainaxEnding, the Demon Sisters would be teaming up with the heroes in order to fight the bigger threat: [[spoiler:Demon Stocking (and presumably their father Corset as well).]]



[[folder:Live Action TV]]
* Happens regularly in soap operas. For example, on ''AllMyChildren'', lifetime enemies Adam and Palmer teamed up to kill a rapist.
* ''Series/{{The 100}}'' Season 1 had a war occur between the Grounders and people from the Ark. In Season 2, the two factions ally against Mount Weather, which is kidnapping people from both sides to use as HumanResources, and has by far the most advanced military on the Ground.
* ''Series/TwentyFour'': Season 2, Jack is forced to work with Nina Myers, the woman who killed his wife, in order to find information on the season's terrorist threat. Likewise, in season 6, Jack teams up with the previous season's BigBad [[spoiler:Charles Logan]] to investigate a corrupt Russian diplomat.
** Season 5 has him team up with Christopher Henderson to stop bigger threat Vladimir Bierko.
* ''Series/TheFortyFourHundred'': An unusual example occurs where Jordan Collier and Tom Baldwin must work together to escape a dream sequence (whose actual purpose is to get people to work together). It's an odd example in that neither character is a villain: as Tom is a government official doing its best to deal with bizarre circumstances (and sometimes engaging in some morally-questionable methods of dealing with problems) and [[FauxSymbolism Jordan Collier]] is trying to avert the end of civilization, but supports anarchy and believes everyone should take Promicin (a drug that has a 50% chance of death or super-powers).
* ''Series/{{Airwolf}}'': In the episode "Condemned", String and Caitlin have to work together with some UsefulNotes/RedsWithRockets to acquire the antidote for a lethal virus. Then stop [[UsefulNotes/FromRussiaWithNukes three nuclear warhead-equipped cruise missiles from hitting the island]]. Soviets attempt to acquire Airwolf, but don't get very far and stop this before things get hairy between them. The parties depart friends.
* ''AmericanGothic'': Buck, Dr. Crower, Gail, and Ben are all forced to work together in the episode "The Beast Within", when Ben's deranged brother takes them all hostage: Dr. Matt's hand is hurt so he has to coach Ben in performing an emergency surgery, while Buck and Gail have to work together to find the lost key to the handcuffs holding them and Caleb prisoner. (The fact this all turns out to be [[spoiler:ThePlan orchestrated by Buck]] rather subverts the trope.)
** And at the very end of the series, Merlyn is forced to go to Dr. Peele, Selena, and Ben for aid in [[spoiler:digging up Buck's 'corpse']] so that the two of them can then work together to save Gail and stop Caleb's rampage.
* ''Series/AmericanHorrorStoryMurderHouse'': Constance forms an alliance with Moira, the ghost of the woman she murdered, to dispose of a sleazy developer who plans to tear down the house.
* ''Series/{{Angel}}'': SubvertedTrope during the fourth season, when Angel comes to Lilah for information on the Beast and suggests they work together:
-->'''Angel:''' You're afraid of what's coming. Maybe we can help each other. The enemy of my enemy--\\
'''Lilah:''' Can kiss my ass too.
** However, Angel eventually convinces Lilah to give him the information he was seeking, with the argument that Angel will either use it to stop The Beast (in which case Lilah wins) or Angel will die trying (in which case Lilah also wins). As it turns out he decided to [[spoiler: TakeAThirdOption]], so in the end it's more played straight.
** And in the end, she does ally with the team anyways.
* ''Series/{{Arrow}}'':
** Despite his mistrust and dislike of him, Detective Lance asks for the Arrow's help on multiple occasions. By Season 2, this has evolved into them having formed an understanding, and Lance being a FriendOnTheForce.
** The Season 2 finale "Unthinkable" has two examples. The Arrow allies with the League of Assassins to take on [[BigBad Deathstroke]] and his {{Super Soldier}}s, while Diggle and Lyla team up with the SuicideSquad to stop ARGUS from [[GodzillaThreshold bombing the city in an attempt to stop the soldiers]].
** Season 3 has Oliver teaming up with his old enemy Malcolm Merlyn in an effort to learn about the League's methods and fighting style in order to mutually protect each other and Thea from the League's sights. The two still can barely stand each other, though.
* ''Series/BabylonFive'': "Dust to Dust". Bester teams up with Garibaldi to catch drug smugglers. [[Creator/JMichaelStraczynski JMS]] [[WordOfGod explicitly stated]] this was to prevent DiminishingVillainThreat.
** Another episode has a scene deliberately written in defiance of the trope, which Straczynski hates. Mortal enemies Londo and G'Kar are [[LockedInAFreezer trapped in an elevator]] with a fire outside draining their oxygen. Londo declares that they'll have to work together to escape but G'Kar refuses: he's perfectly fine with dying as long as he gets to see Londo die, too.
--->'''G'kar:''' (...)But I don't have to kill you. I don't have to do anything! And I still get to watch you die! I find this most appealing!\\
'''Londo:''' This is ''insane''! We ''must'' work together!\\
'''G'Kar:''' ... No. As the humans say: "Up yours, die." ''*Continues giggling*''
*** The irony of this is that, if the Narn surrender treaty didn't include such harsh penalties for G'Kar just killing Londo, he might happily have helped. However, thanks to the excessive measures taken to prevent Narns attacking Centauri, this was the only way G'Kar would ever get to see Londo die.
*** Further irony is piled on by finally [[PlayingWithATrope playing the trope straight]] when Londo's ProphecyTwist kicks in. At that point G'Kar is one of the last two friends Londo has.
** Londo and G'Kar team up again in the "And The Rock Cried Out, 'No Hiding Place'" when Londo constructs a BatmanGambit [[spoiler: to enlist G'Kar's aid in destroying Lord Refa, whom Londo believes killed his lover Adira and was responsible for using mass projectors on the Narn homeworld. Londo supposedly tricks G'Kar into leaving the sanctuary of station under the pretext of having the Centauri forces arrest him on Narn in Refa's presence; in fact, it was so G'Kar could make contact with the Narn resistance and set up the NoHoldsBarredBeatdown Lord Refa receives [[CrowningMusicOfAwesome to the tune of the episode's eponymous Gospel tune]].]]
** Bester invokes the saying "the enemy of my enemy is my friend" in persuading [[spoiler: Sheridan to work with him against the Shadows, whom Bester has also come to mistrust, in "Ship of Tears".]] He brings it up again when he finds out that [[EvenEvilHasLovedOnes his lover]] was abducted to become part of their WetwareCPU.
-->'''Bester:''' [[ItsPersonal Your war is now my war.]]
* ''Series/{{Galactica 1980}}'': The episode "The Return of Starbuck". Often the only episode of the series that some fans of the [[Series/BattlestarGalactica1978 original series]] will [[FanonDisContinuity accept as continuity]].
* ''Series/BattlestarGalactica2003'': Has this quite a few times as well, usually involving Cylons and humans co-operating, such as Athena's HeelFaceTurn and the rebel Cylon faction seeking Galactica's help against Brother Cavil. However the "enemy of my enemy is my friend" quote is actually used by President Roslin when she teams up with terrorist-turned-radical politician Tom Zarek, after Commander Adama tries to force her resignation.
* ''Series/BreakingBad'': Hector Salamanca hates Walter White and would like nothing more than to kill him. However, Walter knows that Hector hates his mutual enemy, Gustavo 'Gus' Fring, even more and gives him a chance for revenge. Through an impressive BatmanGambit, they lure Gus Fring, who has his own vendetta against Hector, to Hector's nursing home. [[spoiler:Hector proceeds to ding his bell one last time to detonate a bomb Walter planted on his wheelchair to take both himself and Gus Fring out.]]
** Later as of 'Rabid Dog' [[spoiler: Hank and Jesse, who have had a tremulous relationship at best, team up to take down Walt.]]
* ''Series/BuffyTheVampireSlayer'':
** Buffy teamed up with Spike to stop Angelus at the end of season 2. With some unusual fallout; because the main time she'd met him had been during this Enemy Mine situation, when Spike returned in season 3, Joyce thought that they were actually allies and let him in. In season four he also teamed up with them a few times for various reasons (once because Giles just paid him to), and by the fifth he ran out of a need for outside excuses and [[HeelFaceTurn turned into a straight ally]].
** Season 8 had Dracula team up with the Scoobies, who he hates (except Xander), for vengeance as the villains (Japanese vampires and a witch) had taken his power. [[RacistGrandma Also, because he was kind of a racist]].
** In "Prophecy Girl", Xander enlists his hated enemy's (Angel) help to storm the Master's lair, and save Buffy. Angel scoffs at that, so Xander shoves a cross in his face for extra convincing.
** A very brief one occurs in Season 3's "Choices," when the Mayor and Faith, in the interest of mutual survival, team up with the Scooby Gang in the high school cafeteria when demon spiders escape from the Box of Gavrok.
** They tease this with The Master and Buffy in Season 8, but it never actually happens, unless you count him trying to sneak attack Twilight while he and Buffy are fighting.
** The General very reluctantly works with the Slayers to fight the invading demon armies.
* ''Series/{{Castle}}'': In the season 5 finale, Beckett uncovers a murder she initially believes was the work of Senator Bracken, the man who hired a hitman to kill her mother. She then uncovers that it was actually the work of a hitman setting up to ''snipe'' Bracken in two days, and is now forced to work with him on the investigation of an attempted murder of a man she would like nothing less than to kill herself. The irony is not lost on her.
* ''Series/{{Charmed}}'': This happens several times when the Halliwell sisters must reluctantly team up with demons for various reasons that are in the best interests of both sides, such as preventing the existence of magic from being revealed to the mostly unaware human population or stopping a neutral third party whose plan, if successful, would result in the vast majority of combatants on both sides being exterminated.
** A strange case of this happens in Season 6's two-part season finale where that season's BigBad, corrupt Elder Gideon, teams up with his evil MirrorUniverse counterpart to trap two of the sisters in the MirrorUniverse where they team up with that universe's version of their most notorious recurring enemy, the demon Barbas (since demons are the good guys in that universe) before fighting and then teaming up with their own evil counterparts in order to return to their own universe. Unfortunately, that causes the two universes to become unbalanced resulting in the normal universe becoming too good and the mirror universe becoming too evil, which forces the sisters to once again team up with their evil counterparts to restore the balance between both universes by killing both versions of Gideon, who have each meanwhile teamed up with their own universe's version of Barbas. In short, the entire episode is a confusing mess of various EnemyMine scenarios.
* ''Series/{{Community}}'' has a really bizarre example in the episode "G.I. Jeff". Jeff falls into a coma and dreams he's a member of GIJoe. After a series of mishaps, he finds himself on the run from the unit with the other study group members (also imagined as G.I. Joe members). Eventually, he causes so much trouble, G.I. Joe and Cobra have to join forces to capture him.
* ''Series/DoctorWho'':
** Every story in Season 8 is about the Master coming up with some plan to destroy the world, someone (usually the Doctor) pointing out that performing this plan would end up screwing over the Master too somehow, and the Master teaming up with the Doctor to undo the damage.
** The serial [[Recap/DoctorWhoS18E7Logopolis "Logopolis"]]. Of course, the Master turns on the Doctor, tries to destroy the Universe rather than being unable to rule it, and then kills the Doctor by shaking him off a radio telescope into a parking lot. [[TheNthDoctor It isn't the end though, as the moment has been prepared for]]. Considering how the Master is just about the closest thing the Doctor has to a rival, they've certainly been forced to team up on any number of occasions throughout their history -- usually to stop a catastrophic evil that the Master himself unleashed, and invariably with the Master turning on the Doctor shortly before or after the problem is solved. Of course, the Doctor has been anticipating betrayal all along, and has almost certainly done something clever to come out ahead regardless.
** Happens in the conclusion of "Trial of a Time Lord", when the Master reveals that the prosecutor, the Valeyard, is actually the Doctor's EnemyWithout, whom will get the Doctor's remaining regenerations if he gets the Doctor executed. The Master helps the Doctor for two reasons: to have an enemy with which he's more familiar (the Doctor vs. the Valeyard) and to retain the chance to end the Doctor's existence personally.
** In [[Recap/DoctorWhoS28E13Doomsday "Doomsday"]], the presence of just four Daleks bumps an entire army of Cybermen down from "enemy" to "temporary ally". Once the Daleks start moving, Torchwood and the Cybermen appear to ignore each other in favour of the new targets.
** Happens again in [[Recap/DoctorWhoS30E17E18TheEndOfTime "The End of Time"]], where [[spoiler:the Master saved the Doctor from being disintegrated by Rassilon. It should be noted that [[ThirdActStupidity Rassilon brought the alliance, and thus his defeat, upon himself.]]]]
** And again in [[spoiler:[[Recap/DoctorWhoS35E1TheMagiciansApprentice The Magician's Apprentice]] The Doctor goes missing and Davros turns up.]]
** Differently, in [[Recap/DoctorWhoS31E12ThePandoricaOpens "The Pandorica Opens"]], [[spoiler:[[SpacePolice Judoon,]] [[ScaryDogmaticAliens Daleks,]] [[ProudWarriorRaceGuy Sontarans,]] [[CyberneticsEatYourSoul Cybermen,]] [[LizardFolk Silurians]], [[CombatByChampion Sycorax]], [[MayContainEvil Autons]] [[ContinuityPorn and a whole load of other races]] show up to [[SealedGoodInACan imprison the Doctor]] in an attempt to [[WellIntentionedExtremist stop the non-existence of the Universe.]]]]
** [[Recap/DoctorWhoS13E6TheSeedsOfDoom "The Seeds of Doom"]] features a plant maniac who employs a number of hired guns. They spend the first four episodes of the serial [[WhyDontYaJustShootHim chasing, capturing, and recapturing]] the Doctor and Sarah Jane, only to ally with them when the [[AlienKudzu Krynoid]] [[BodyHorror that used to be]] [[MinionWithAnFInEvil Keeler]] starts to get really huge, dangerous, and indiscriminately hungry for organic matter.
** In [[Recap/DoctorWhoS32E7AGoodManGoesToWar "A Good Man Goes to War"]], [[spoiler:the Doctor calls upon the aid of the Silurians, Judoon and a lone dishonored Sontaran alongside actual friends to rescue Amy. However, the Silurians and Sontaran's reasons for teaming up isn't so much the presence of a common enemy as it is the fact that they owe the Doctor a debt.]]
** In [[Recap/DoctorWhoS12E4GenesisOfTheDaleks "Genesis of the Daleks"]] when the Doctor has the chance to destroy the Daleks at their creation, one of the reasons he gives against this is that otherwise hostile races would be forced into alliances due to this.
** Comes close to happening in [[Recap/DoctorWho2013CSTheTimeOfTheDoctor "The Time of the Doctor"]], where, like in "The Pandorica Opens", various races gather round the planet Trenzalore to restart the Time War if the Time Lords return. However much of this war is unseen and slightly subverted in that everybody is reluctant to start the war. It finally becomes EnemyMine when on the other side, the Doctor and the Papal Mainframe, including the Silents, fight together.
** Apparently what happened after [[Recap/DoctorWhoS10E3FrontierInSpace "Frontier in Space"]], where the Master and Daleks tried to cause a war between Earth and Draconia after which they would [[WarForFunAndProfit invade the Galaxy]]. The humans and Draconians are told by the Doctor to form an alliance against the Daleks.
* ''Series/{{Farscape}}'':
** Played straight in the "Liars, Guns, and Money" trilogy when Moya's crew recruit various aliens who had tried to kill them in the past to help them pull off a heist.
** Played straight and subverted with John and Scorpius multiple times as John pretends to team up with Scorpius, then John is forced to team up with Scorpius to save Aeryn (twice!), then it looks like Scorpius has betrayed them but he really hasn't, then John betrays Scorpius only to have to go back and save him again. And then they end up teaming up with Scorpius again for the miniseries, still against John's better judgment.
* ''Series/{{Firefly}}'': Does this in the episode "Trash", where the crew joins up on a heist with Saffron, the psychotic seductress who tried to steal their ship a few episodes back. Rather amusingly subverted: [[spoiler: Saffron unsurprisingly double-crosses the crew, and the crew turns on her in return, having fully expected her sudden but inevitable betrayal]].
* ''Series/GameOfThrones'': This is the reason the Wildlings are all united under a single leader. Every tribe hates each others' guts: they just hate the idea of dying in droves to [[BiggerBad the White Walkers]] more.
* ''Series/GetSmart'': In one episode, Max Smart from [[GovernmentAgencyOfFiction CONTROL]] and Siegfried from [[NebulousEvilOrganisation KAOS]] team up against a man conspiring to destroy the world, since if he succeeded they would have nothing to fight about and would be out of a job.
* Nick and Renard's relationship in ''Series/{{Grimm}}'' is like that. In other circumstances they'll be enemies, and Renard even was a villain-like character at first. They became allies because they have a common enemy; The Royal Families.
* ''Series/{{Heroes}}'': This is the favorite way they deals with Sylar.
** Volume 3 had Noah Bennet work with ''Sylar'' to stop the escaped Level 5 villains. The two barely tolerated each other but seem to have ''bonded'' by the end of the 3rd episode. Then Sylar starts up with the brain-stealing again, causing Bennet to vow to kill him eventually.
*** What Noah meant could very likely refer to [[spoiler: ''taming'' Sylar. In Season 3, Episode 4, "I am Become Death", Peter is taken to a future timeline by his future self. In this timeline, Peter discovers a calm and collected Sylar, living in the Bennet household with a son named ''Noah''.]]
** Also, in the Volume 3 finale, Bennet frees all the Level 5 supervillains so they can help fight [[spoiler: Sylar, who's on the downswing of his HeelFaceRevolvingDoor trend]]. They all last maybe 3 minutes, tops.
** Volume 5 does this ''again'' when Peter realizes that in order to prevent Samuel Sullivan's plans from coming into fruition, he's going to need Sylar's help. Unfortunately, it meant getting himself stuck inside Sylar's head and dealing with the latter's VillainousBSOD. [[spoiler: Unlike the many times before, though, it works; the two save the day, and Sylar's HeelFaceTurn seems to stick this time.]]
* ''Series/HouseOfCardsUS'': In Season 3, the Republican and Democrat congressional leadership team up to oppose President Underwood's America Works program. It backfires against the Democrats when, after America Works goes bankrupt after they cut off the money, Underwood uses it as justification to renege on his promise to not seek a term of his own in the White House.
* ''Series/KamenRiderDecade'': In the final arc, the separate ''Franchise/KamenRider'' worlds are pitted against each other in a giant war, with the losers being erased from existence, so naturally Riders and Kaijin put aside their differences in order to protect their universes. Tsukasa, in the meantime, tries to convince everyone to focus on the common enemy in [[LegionOfDoom Daishocker]]; it works almost too late, but then the death of [[Series/KamenRiderX Apollo Geist]] actually accelerates the destruction rather than stopping it. [[NiceJobBreakingItHero Dammit]].
* ''Series/LawAndOrderCriminalIntent'': Detective Goren's [[WorthyOpponent arch-nemesis]] Nicole Wallace supplies him with information allowing him to [[spoiler: prevent her fiancé from killing his own daughter, who Nicole loved as her own.]] Ironic, considering [[spoiler: Nicole killed her real daughter]].
* ''Series/{{Leverage}}'': Has Nate teaming up with [[EvilCounterpart Sterling]] for "The Zanzibar Marketplace Job".
** Also in "The Last Dam Job", the team brings in a few people who have been enemies in the past. Eliot and Quinn, in particular, have a perfectly amicable working relationship despite the fact that they tried to beat one another to death in the Season 1 finale.
* ''Series/{{Lost}}'': Has done several times, both in regards to the survivors and the Others.
** In Season 3, when [[ChainedHeat Kate and Juliet are handcuffed together]] and forced to work together to escape the smoke monster's repeated attacks. It turns out Juliet herself handcuffed them together to try and gain Kate's trust.
** Throughout the second half of Season 4, Ben joins forces with Locke's group to fight the freighter mercenaries.
** At the end of Season 4, Kate and Sayid team up with Richard and his [[RedshirtArmy army of Others]] to rescue Ben from the mercenaries.
** Then there is the reluctant team-up between Losties and the Others of 1977 in the Season 5 finale.
** Finally, Season 6 had everyone teaming up against the new BigBad. Ben Linus and Charles Widmore sure were surprised to find themselves working toward a common goal!
* ''Series/TheManFromUNCLE'': Had this trope as part of its central premise, as THRUSH forces the Western nations and their ideological opponents the Soviet Union to cooperate in forming UNCLE.
* ''Series/{{MASH}}'': Charles Winchester, ordinarily a foil to Hawkeye and B.J., will occasionally join forces with one of them against the other (usually as part of an EscalatingWar), or with both of them against a common target. The latter moments tend to highlight Winchester's JerkWithAHeartOfGold qualities, given that the people he targets are always bullies themselves, such as a racist colonel, or a man bigoted against stutterers, or the insanely jingoistic Colonel Flagg.
** Flagg's mistake was trying to blackmail Charles into helping him with a threat of prison. Charles doesn't like being manipulated in that way, and knows precisely how to deal with it (he tricks Flagg into trying to arrest Colonel Potter, and the Mayor and police chief of Ouijonbou, all three of whom have the right contact to get rid of Flagg for good now that they have something solid against him).
** One good example is the episode where Hot Lips is being accused of being a communist by a congressional aide. Without even being asked, Winchester takes a stand against the aide and takes up for Margaret.
** Due to a misunderstanding and accident of timing, the Colonel who sent Charles to the 4077th attacks Margaret (thinking she's the woman Charles procured for his entertainment). The Colonel offers to transfer Charles back to Tokyo, and all he has to do is lie about what happened with Margaret. Charles is clearly tormented by the decision, but chooses to tell the truth as he cannot stand to destroy Margaret's career for his own (relatively modest) gain.
* ''Series/{{Merlin1998}}'': Merlin himself outright states that this is his motivation for allying himself to Uther. Uther's enemy, Vortigern, is Merlin's enemy and has joined forces with an even worse enemy.
* ''Series/NaturallySadie'': While not as big of enemies as most of the other examples, this show uses this a lot to get characters who dislike one of the main cast to work alongside them, usually for a school project. One memorable incident has almost the entire teenage cast working together in detention while the remaining member teams up with [[EveryoneCallsHimBarkeep Mallcop]] -- two examples in one episode, there are many more.
* ''Series/TheNewAdventuresOfRobinHood'': In "Attack of the Vikings", Robin must rescue both himself and his archenemy when he and Prince John are kidnapped by Vikings.
* ''Series/{{Nikita}}'':
** {{Defied}} when Division's rival Gogol tries to enlist Nikita to help them recover a dirty bomb.
-->'''Ari Tasarov:''' The enemy of my enemy--\\
'''Nikita:''' --is just another man standing in my way.
** Played straight later when Gogol, Division, ''and'' Nikita collaborate to get Alex out of danger after she confronts Sergei Semak, the uncle who had her father killed so he could take over the family business.
* ''Series/OnceUponATime'': In the Season 1 finale, Emma and Regina briefly team up [[spoiler: in order to save Henry's life]].
** Regina later teams up with Mr. Gold in Season 2, [[spoiler: in order to stop Regina's mother, Cora, from getting into the real world]].
** Season 2 ends with a massive one between Regina, Emma, Snow, Charming, Gold, and Hook to save [[spoiler: Henry (again) after he gets kidnapped to Neverland]]. The team-up has...varying levels of success.
** In Season 4, ArcVillain Maleficent eventually decides to form one in the final three episodes with Emma and company, striking a deal for Emma to find Mal's daughter, Lily.
* ''Series/{{Oz}}'': Happens all the time in this prison drama as the various factions struggle for control of the drug trade, or seek to murder a rival.
* ''Series/PersonOfInterest'': In her war against [[DirtyCop HR]], Joss Carter first allies herself with crime boss Carl Elias and then has him form a temporary alliance with the rival Russian syndicate.
** At one point, Reese and Shaw team up with [[WellIntentionedExtremist Hersch]] in order to take down Vigilance, since they need to find Finch and he needs to find Control, and Vigilance has both of them.
** Early season three Team Machine also teamed up with [[TheCracker Root]] a few times, before she had actually graduated into TokenEvilTeammate. The most notable example of this was when Finch, Fusco, and Shaw were running out of time to save a [[RoaringRampageOfRevenge rampaging]] Reese, and they decided that [[GodzillaThreshold Root was the only way to get to him]].
* ''Franchise/PowerRangers'': Certain incarnations have done this, particularly ''Series/PowerRangersZeo''. The BigBad of the moment has brainwashed TheHero and the SixthRanger's attempt to save him has failed. It turns out that last year's villains have the technology to send the rest of the team over. They do, just to screw around with the new villains.
** Likewise, a villain variant of this was completely subverted in ''Turbo: A Power Rangers Movie.'' Newly anointed BigBad Divatox calls [[DiminishingVillainThreat decayed villain]] Rita Repulsa for help, and gets laughed at. Rita's CaptainObvious response is that if she knew how to defeat the Rangers, she would have done it already.
** On the ''Franchise/SuperSentai'' side, [[Series/KaizokuSentaiGokaiger Basco ta Jolokia]] is a rare case given his [[Main/ChronicBackstabbingDisorder track record.]] [[spoiler:Zangyack would have right out won against the team in #43 if Basco had not suddenly turned against Zangyack. He even gives Marvelous back his [[Main/TransformationTrinket Mobirates and Ranger Key.]] Of course, he has his [[Main/ItsAllAboutMe own]] [[Main/GottaCatchThemAll reasons.]]]]
* ''Series/{{Revolution}}'': As of episode 14, the Resistance and the Georgia Federation have allied to open a two front war against Monroe.
** In season 2, the heroes end up allying with pretty much all their surviving enemies since they need to top the Patriots before they take over most of the old United States and enact their genocidal policies.
* ''Series/RobinHood'': In the first season of the BBC's show Robin and the sheriff temporarily fight side-by-side in order to defeat a group of Saladin's assassins. In the third season Robin and Guy team up in order to [[spoiler: save their half-brother Archer from execution.]]
* ''Series/SaturdayNightLive'': No matter how much Sean Connery would try to antagonize Alex Trebek during the Celebrity Jeopardy skits, the two of them would often commiserate over another contestant's idiocy--note the skit where they both snark on Anne Heche's nutty behavior.
* ''Series/{{Scrubs}}'': Even features this trope when Dr. Cox and Dr. Kelso team up to break the spirit of an overly cheery coworker. However, she outsmarts them and they are back to mutual hate by the end of the episode.
** Another episode featuring Dr. Kelso has him realizing one of the reasons the hospital keeps going is that everybody is united against ''him''. In the future he'll purposefully invoke it to keep the staff going in moments of stress or instability.
* ''Series/{{Smallville}}'': In the episode "Asylum" [[Characters/SmallvilleMeteorFreaks Ian Randall and Eric Summers]] ask for the help of [[TheHunter Van McNulty]] because he knows Clark's weakness.
** There are also various times in season nine where the good guys have teamed up with [[CorruptCorporateExecutive Tess]] [[WellIntentionedExtremist Mercer]]. Chloe in particular joined forces with Tess in episodes like "Upgrade" and "Sacrifice" so that they can both protect their secrets. (Tess's season ten HeelFaceTurn takes the 'enemy' out of the equation, so all post-S9 teamups aren't this trope.)
* ''Series/StargateAtlantis'': Sheppard and a wraith cooperated to escape custody of Kolya in the episode "Common Ground". This included the wraith feeding on Sheppard to have the strength to fight off their enemies, giving it the opportunity to double-cross our hero. However, he returned all the LifeEnergy he took (and possibly made up for a few months Sheppard spent in a time-dilation field) and Sheppard made good on his promise to let it go free. The wraith in question, later dubbed "Todd", would become a recurring character, and is notable for being unusually sociable for a Wraith, even ''joking'' with the heroes.
** Taken UpToEleven in the final battle against the Asurans, where the Earth, Traveller, and Wraith ships fight side by side against the Asuran warships in what is hands down the single most awesome space battle any of the three series has managed (''Series/StargateUniverse'', being set on a CoolStarship, had a chance to top it before it was cancelled). This is even more impressive given the distinctly quarrelsome nature of the Wraith, thus the battle is a meld of nine factions (7 Hives, Atlantis and the Travellers) rather than 3 as some may think.
** After he escaped the first time, Michael teamed up with the Atlantis team to bring down his former hive after his queen snubbed him. This didn't work out well for either side.
* ''Series/StargateSG1'': Features this a great many times. It seems to be one of the favorite negotiating tactics of the Tau'ri in particular.
** Ba'al has had to join forces with SG-1 to defeat his master Anubis and the greater threat of the Replicators during the "Reckoning" two-parter. This is not the last time they'd work with him. Initially subverted, as Ba'al asked SG-1 for an alliance and was flat-out rejected by Jack O'Neill.
-->'''O'Neill:''' I've got a better idea, instead of helping you, why don't we sit around and watch you get your ass kicked? That way you'll be dead, and we'll be glad.
** Special mention just ''has'' to go to the two-parter "The Quest", where SG-1, Ba'al, ''and'' [[DarkMessiah Ori messiah Adria]] team up to solve Morgan le Fay's puzzles.
** There is also an ''SG-1'' episode entitled "Enemy Mine", though it is unrelated to this trope at first. The conclusion is somewhat an example of this trope, as the Colonel overseeing the mine and the Unas definitely considered each other enemies until the compromise where they agreed to work the mine themselves so long as it contributed to killing some Goa'uld. Plus they look a little ''Enemy Mine'' Lou Gossetty, what with the scaly skin and labored manner of speaking.
** The original alliance (the one led by Ra) against Anubis, whose crimes were apparently considered unspeakable, even amongst the System Lords. [[EvenEvilHasStandards Think about that]].
*** Sokar was banished from the System Lords for much the same reason, and by much the same method.
*** According to Thor in "Fair Game", it is precisely because of the concept of "enemy of my enemy" that the Goa'uld System Lords banded together in the first place. Due to their AlwaysChaoticEvil nature, however, it takes a serious threat (like the Tau'ri) to convince them to work together for any extended length of time.
** The "Giant Aliens" (later named Omeyocans by the novel ''City of the Gods'') in the episode "Crystal Skull" quote the full line verbatim to SG-1. In Mayan, no less. [[WhatHappenedToTheMouse And then they're never heard from again.]]
** Then there's the various times the SGC temporarily allied with Lord Yu. To paraphrase Daniel Jackson, Yu is not to be liked or trusted, only trusted to make a [[PragmaticVillainy practical decision]] unhampered by the [[StupidEvil usual Goa'uld mindset]].
* ''Franchise/StarTrek'': In general this franchise is ''all'' over this trope. The Klingons team up with the ''Enterprise'' crew in "Day of the Dove", the Klingons allying with the Romulans against the Federation and then later with the Federation against the Romulans, ''Voyager'' teaming with the Borg in "Scorpion", TheAlliance of the Alpha Quadrant (and the poor, forgotten Beta Quadrant!) against the Dominion, etc., etc.
* ''Series/StarTrekDeepSpaceNine'': Kira, Damar and Garak loathe each other. The fact that Damar killed Garak's LoveInterest and Kira's surrogate daughter a few seasons back [[{{Understatement}} does not help]]. Eventually, the fate of Cardassia, and with it the entire Alpha Quadrant, rests on the three of them putting aside their differences and working together to create a rebellion to overthrow the Dominion control of Cardassia. It even leads to the beginning of FireForgedFriends.
* ''Series/StarTrekEnterprise'': "Dawn," "Storm Front" (Archer fighting alongside Silik)
** The Andorians and Vulcans learning to work together have ''some'' shades of this trope (though the fact that one of the enemies faced together is extremist elements in the Vulcan governments complicates matters), especially during the last season (the Romulans' meddling intended to break the Coalition ends up strengthening it by giving them a common foe: the Romulans. Oops).
* ''Series/StarTrekTheNextGeneration'': "Darmok". In the midst of the plot, Picard retells similar parts of ''Literature/TheEpicOfGilgamesh'', highlighting this as OlderThanDirt.
** Rather famously, the [[http://memory-alpha.org/en/wiki/Tamarian_language Tamarian]] for this trope is "Darmok and Jalad at Tanagra."
** ''TNG'' also did it in "The Enemy", where Geordi and a Romulan had to work together.
* ''Series/StarTrekVoyager'': This is the plot, although by the third season the rival crew factions have been forgotten.
** In a later season of ''Voyager'', in the episode where the Delta Flyer is introduced, B'Elanna Torres learns that the Maquis lost back home. She turns depressed and does dangerous things in the Holodeck with the safety off, and because most of the ship has all but forgotten their initial division between Starfleet and Maquis, they don't know what's wrong with her.
** When they first re-establish contact with Starfleet, Janeway mentions to Chakotay that she actually ''had'' forgotten the implications of the mixed crew after they had been working together for so long. She becomes concerned for what happens when they got home, since as far as Starfleet are concerned, the former Maquis crew are ''still'' wanted terrorists?!
** Janeway's [[spoiler: alliance with the Borg in Delta Quadrant against Species 8472 (where the crew picks up 7 of 9).]]
* ''Series/{{Supernatural}}'': In season 5, Sam, Dean, and the others join forces with the demon Crowley in an attempt to defeat Lucifer.
** An odd example when [[spoiler:Gabriel]] joins forces with the Winchesters and goes up against Lucifer, [[spoiler:resulting in his death]], since he spent most of the time he knew them tormenting them. [[spoiler:Although it's implied that he knew that they'd eventually do, which is why he gave them such a hard time.]]
** And later join forces with [[spoiler:Meg]] to defeat [[spoiler:Crowley.]]
*** Which is an interesting use of this trope, seeing as [[spoiler: Meg was a [[SycophanticServant staunch]] Lucifer loyalist whom the boys had fought against in the ''same episode'' they first allied with Crowley.]]
** In season 7, the Winchesters are aided by several old enemies (Meg, Crowley, and the [[MonsterProgenitor Alpha vampire]]) at different points and for various reasons in order to defeat the [[EldritchAbomination Leviathans]]. [[spoiler: Of the three, Crowley is the one who double-crosses them when things are over and done with.]]
** [[spoiler: When Dean was trapped in Purgatory for a year between seasons 7 and 8, he teamed up with a vampire named Benny in order to escape.]]
* ''Series/TeenWolf'': Scott, Allison, Chris, and Kate versus Alpha Peter Hale in the season one finale.
** And then not-so-Alpha Peter with Derek versus Gerard and Kanima Jackson in season two.
* ''Series/TerraNova'': The episode "Now You See Me". Taylor and Mira's "Your place or mine" hostage struggle is interrupted by a pair of young and territorial Slashers. Leading to Taylor to hand a knife to Mira and say “We can fight each other, or we can fight them.”
* ''Time Gentleman Please'': PlayedForLaughs. The Pub Landlord ''loathes'' the French, due to his wife running away with a Frenchman and taking his beloved son away from him. In one episode, the Frenchman walks into his pub, causing him to immediately begin a tirade, before the Frenchman cuts him off and reveals that she's left ''him''... for a ''German''.
--> '''Pub Landlord''': *''Shakes hand''* The ''[[WorldWarTwo mutual]]'' enemy, all hostilities are now ceased!
* ''Series/{{The Vampire Diaries}}'': Damon will take a break from harassing Stefan if there's a bigger threat, or if it's in his interest.
** If the promo for "Before Sunset" is any indication the brothers will work with Klaus to stop Alaric.
* ''Series/TheWire'': Shotgun-toting BadassLongcoat stick-up boy Omar Little and Harper's Magazine-reading Uber-BadassBookworm assassin Brother Mouzone team up to take on Stringer Bell after a failed LetsYouAndHimFight. ''And it is awesome''.
* In the episode ''A Necessary Evil'' of ''Series/XenaWarriorPrincess'', Xena enlists the aid of her enemy Callisto to fight Velasca, an Amazon who acquired [[AGodAmI the powers of a goddess]]. At that point, Callisto had recently become immortal and was the only person available to go up against her, despite Gabrielle's protestations.
* ''Series/TheXFiles'': The episode "En Ami". And "Tunguska"/"Terma" as well, although that turned out to be a set-up.
* In an episode of ''Series/TheFlash2014'', the titular hero is forced to temporarily team up with Leonard Snart (AKA Captain Cold) and his sister Lisa (AKA Golden Glider) in order to help transport a bunch of dangerous meta-humans from S.T.A.R. Labs to [[Series/{{Arrow}} Lian Yu]]. Naturally, Snart betrays Barry and releases the meta-humans (except for one, whom he kills for ostensibly owing him money), figuring they now owe him one. At the end of the episode, Barry admits he probably shouldn't have trusted a known felon.
* The premise of the upcoming show ''Series/LegendsOfTomorrow'' is that a team up of the some of the heroes and villains of the ''Series/{{Arrow}}'' and ''Series/TheFlash2014'' franchise is necessary to stop an immortal villain, as claimed by the time-traveling Rip Hunter. Leonard Snart even points out that he can't imagine a future where he's considered a hero (he would probably consider it an insult). Hunter points out that they're not heroes, they're ''legends''.

to:

[[folder:Live Action TV]]
[[folder:Comic Books]]
* Happens regularly in soap operas. For example, on ''AllMyChildren'', lifetime enemies Adam and Palmer teamed up ''ComicBook/XMen'': ComicBook/{{Magneto}}, always referred to kill a rapist.
* ''Series/{{The 100}}'' Season 1 had a war occur between
as the Grounders and people from BigBad, is the Ark. In Season 2, first person the two factions ally against Mount Weather, which is kidnapping people from both sides to use as HumanResources, and has by far the most advanced military on the Ground.
* ''Series/TwentyFour'': Season 2, Jack is forced to work with Nina Myers, the woman who killed his wife, in order to find information on the season's terrorist threat. Likewise, in season 6, Jack teams up with the previous season's BigBad [[spoiler:Charles Logan]] to investigate a corrupt Russian diplomat.
** Season 5 has him
heroes team up with Christopher Henderson to stop bigger threat Vladimir Bierko.
* ''Series/TheFortyFourHundred'': An unusual example occurs where Jordan Collier
when someone worse comes along.
** Particularly in the [[WesternAnimation/XMen 90s cartoon]], most notably in a season-long storyline in which he
and Tom Baldwin must work together to escape a dream sequence (whose actual purpose is to get people to work together). It's an odd example in that neither character is a villain: as Tom is a government official doing its best to deal with bizarre circumstances (and sometimes engaging in some morally-questionable methods of dealing with problems) and [[FauxSymbolism Jordan Collier]] is trying to avert the end of civilization, but supports anarchy and believes everyone should take Promicin (a drug that has a 50% chance of death or super-powers).
* ''Series/{{Airwolf}}'': In the episode "Condemned", String and Caitlin have to work together with some UsefulNotes/RedsWithRockets to acquire the antidote for a lethal virus. Then stop [[UsefulNotes/FromRussiaWithNukes three nuclear warhead-equipped cruise missiles from hitting the island]]. Soviets attempt to acquire Airwolf, but don't get very far and stop this before things get hairy between them. The parties depart friends.
* ''AmericanGothic'': Buck, Dr. Crower, Gail, and Ben
Professor Xavier are all forced to work stranded together in the episode "The Beast Within", when Ben's deranged brother takes them all hostage: Dr. Matt's hand is hurt so he has to coach Ben in performing an emergency surgery, while Buck [[LostWorld Savage Land]].
** The brilliant ''X-Men'' graphic novel ''ComicBook/GodLovesManKills'' was the basis for ''X2'',
and Gail thus follows the same plot except that, since the comics have to work together to find the lost key to the handcuffs holding them and Caleb prisoner. (The fact this all turns out to be [[spoiler:ThePlan orchestrated by Buck]] rather subverts the trope.)
** And at the very end of the series, Merlyn is forced to go to Dr. Peele, Selena, and Ben for aid in [[spoiler:digging up Buck's 'corpse']] so
been going on long enough that the two of them can then work together to save Gail and stop Caleb's rampage.
* ''Series/AmericanHorrorStoryMurderHouse'': Constance forms an alliance with Moira, the ghost of the woman she murdered, to dispose of a sleazy developer who plans to tear down the house.
* ''Series/{{Angel}}'': SubvertedTrope during the fourth season, when Angel comes to Lilah for information on the Beast and suggests
they work together:
-->'''Angel:''' You're afraid of what's coming. Maybe we can help each other. The enemy of my enemy--\\
'''Lilah:''' Can kiss my ass too.
** However, Angel eventually convinces Lilah to give him
didn't feel the information he was seeking, with need to hammer home his villainy, Magneto doesn't really have a SnapBack the argument that Angel will either use it to stop The Beast (in which case Lilah wins) or Angel will die trying (in which case Lilah also wins). As it turns out way he decided to [[spoiler: TakeAThirdOption]], so does in the end it's more played straight.
movie.
** And in the end, she does ally ''God Loves, Man Kills II'', released to tie in with ''X2'', the team anyways.
* ''Series/{{Arrow}}'':
** Despite his mistrust and dislike of him, Detective Lance asks for the Arrow's help on multiple occasions. By Season 2, this has evolved into them having formed an understanding, and Lance being a FriendOnTheForce.
** The Season 2 finale "Unthinkable" has two examples. The Arrow allies with the League of Assassins to take on [[BigBad Deathstroke]] and his {{Super Soldier}}s, while Diggle and Lyla team up with the SuicideSquad to stop ARGUS from [[GodzillaThreshold bombing the city in an attempt to stop the soldiers]].
** Season 3 has Oliver
X-Men find themselves teaming up with the villain from the original.
** Magneto has worked with the X-Men in multiple story lines, even becoming the leader in one story arc. This is because, for most writers, Magneto isn't as much a bad guy as he is a WellIntentionedExtremist.
** It wasn't just for one arc. In the late 1980s, due to Charles Xavier being absent, a reformed Magneto took over Xavier's School for Gifted Youngsters for something like four years (in real world time). If you were reading X-Men and ComicBook/NewMutants back then, Magneto as the head of the Xavier school felt like a new status quo.
* Loki is willing to fight on Thor's side pretty much any time Asgard is under attack;
his old enemy Malcolm Merlyn goal is to rule it, after all, and he can't rule it if it's demolished. Also, in an effort to learn about the League's methods and fighting style Spider-Man comic "The Coming of Chaos", he was willing to team up with Spider-Man in order to mutually protect each other and Thea from the League's sights. The two still can barely stand each other, though.
* ''Series/BabylonFive'': "Dust to Dust". Bester teams up with Garibaldi to catch drug smugglers. [[Creator/JMichaelStraczynski JMS]] [[WordOfGod explicitly stated]] this was to prevent DiminishingVillainThreat.
** Another episode has a scene deliberately written in defiance of the trope, which Straczynski hates. Mortal enemies Londo and G'Kar are [[LockedInAFreezer trapped in an elevator]] with a fire outside draining their oxygen. Londo declares that they'll have to work together to escape but G'Kar refuses: he's perfectly fine with dying as long as he gets to see Londo die, too.
--->'''G'kar:''' (...)But I don't have to kill you. I don't have to do anything! And I still get to watch you die! I find this most appealing!\\
'''Londo:''' This is ''insane''! We ''must'' work together!\\
'''G'Kar:''' ... No. As the humans say: "Up yours, die." ''*Continues giggling*''
*** The irony of this is that, if the Narn surrender treaty didn't include such harsh penalties for G'Kar just killing Londo, he might happily have helped. However, thanks to the excessive measures taken to prevent Narns attacking Centauri, this was the only way G'Kar would ever get to see Londo die.
*** Further irony is piled on by finally [[PlayingWithATrope playing the trope straight]] when Londo's ProphecyTwist kicks in. At that point G'Kar is one of the last two friends Londo has.
** Londo and G'Kar team up again in the "And The Rock Cried Out, 'No Hiding Place'" when Londo constructs a BatmanGambit [[spoiler: to enlist G'Kar's aid in destroying Lord Refa, whom Londo believes killed
[[PapaWolf save his lover Adira and was responsible for using mass projectors on the Narn homeworld. Londo supposedly tricks G'Kar into leaving the sanctuary of station under the pretext of having the Centauri forces arrest him on Narn in Refa's presence; in fact, it was so G'Kar could make contact with the Narn resistance and set up the NoHoldsBarredBeatdown Lord Refa receives [[CrowningMusicOfAwesome to the tune of the episode's eponymous Gospel tune]].mortal daughter, who had become possessed.]]
* Franchise/{{Spider-Man}} examples.
** Bester invokes the saying "the enemy of my enemy is my friend" in persuading [[spoiler: Sheridan to work with him against the Shadows, whom Bester has also come to mistrust, in "Ship of Tears".]] He brings it up again when he finds out that [[EvenEvilHasLovedOnes his lover]] was abducted to become part of their WetwareCPU.
-->'''Bester:''' [[ItsPersonal Your war is now my war.]]
* ''Series/{{Galactica 1980}}'': The episode "The Return of Starbuck". Often the only episode of the series that some fans of the [[Series/BattlestarGalactica1978 original series]] will [[FanonDisContinuity accept as continuity]].
* ''Series/BattlestarGalactica2003'': Has this quite a few times as well, usually involving Cylons
Spidey and humans co-operating, such as Athena's HeelFaceTurn and the rebel Cylon faction seeking Galactica's help against Brother Cavil. However the "enemy of my enemy is my friend" quote is actually used by President Roslin when she teams ''[[ComicBook/DoctorOctopus Doc Ock]]'' ended up with terrorist-turned-radical politician Tom Zarek, after Commander Adama tries to force her resignation.
* ''Series/BreakingBad'': Hector Salamanca hates Walter White and would like nothing more than to kill him. However, Walter knows that Hector hates his mutual enemy, Gustavo 'Gus' Fring, even more and gives him a chance for revenge. Through an impressive BatmanGambit, they lure Gus Fring, who has his own vendetta against Hector, to Hector's nursing home. [[spoiler:Hector proceeds to ding his bell one last time to detonate a bomb Walter planted on his wheelchair to take both himself and Gus Fring out.]]
** Later as of 'Rabid Dog' [[spoiler: Hank and Jesse, who have had a tremulous relationship at best, team up to take down Walt.]]
* ''Series/BuffyTheVampireSlayer'':
** Buffy teamed up with Spike to stop Angelus at the end of season 2. With some unusual fallout; because the main time she'd met him had been during this Enemy Mine situation, when Spike returned in season 3, Joyce thought that they were actually allies and let him in. In season four he also teamed up with them a few times for various reasons (once because Giles just paid him to), and by the fifth he ran out of a need for outside excuses and [[HeelFaceTurn turned into a straight ally]].
** Season 8 had Dracula team up with the Scoobies, who he hates (except Xander), for vengeance as the villains (Japanese vampires and a witch) had taken his power. [[RacistGrandma Also, because he was kind of a racist]].
** In "Prophecy Girl", Xander enlists his hated enemy's (Angel) help to storm the Master's lair, and save Buffy. Angel scoffs at that, so Xander shoves a cross in his face for extra convincing.
** A very brief one occurs in Season 3's "Choices," when the Mayor and Faith, in the interest of mutual survival, team up with the Scooby Gang in the high school cafeteria when demon spiders escape from the Box of Gavrok.
** They tease this with The Master and Buffy in Season 8, but it never actually happens, unless you count him trying to sneak attack Twilight while he and Buffy are fighting.
** The General very reluctantly works with the Slayers to fight the invading demon armies.
* ''Series/{{Castle}}'': In the season 5 finale, Beckett uncovers a murder she initially believes was the work of Senator Bracken, the man who hired a hitman to kill her mother. She then uncovers that it was actually the work of a hitman setting up to ''snipe'' Bracken in two days, and is now forced to work with him on the investigation of an attempted murder of a man she would like nothing less than to kill herself. The irony is not lost on her.
* ''Series/{{Charmed}}'': This happens several times when the Halliwell sisters must reluctantly team up with demons for various reasons that are in the best interests of both sides, such as preventing the existence of magic from being revealed to the mostly unaware human population or stopping a neutral third party whose plan, if successful, would result in the vast majority of combatants on both sides being exterminated.
** A strange case of this happens in Season 6's two-part season finale where that season's BigBad, corrupt Elder Gideon, teams up with his evil MirrorUniverse counterpart to trap two of the sisters in the MirrorUniverse where they team up with that universe's version of their most notorious recurring enemy, the demon Barbas (since demons are the good guys in that universe) before fighting and then teaming up with their own evil counterparts in order to return to their own universe. Unfortunately, that causes the two universes to become unbalanced resulting in the normal universe becoming too good and the mirror universe becoming too evil, which forces the sisters to once again team up with their evil counterparts to restore the balance between both universes by killing both versions of Gideon, who have each meanwhile teamed up with their own universe's version of Barbas. In short, the entire episode is a confusing mess of various EnemyMine scenarios.
* ''Series/{{Community}}'' has a really bizarre example in the episode "G.I. Jeff". Jeff falls into a coma and dreams he's a member of GIJoe. After a series of mishaps, he finds himself on the run from the unit with the other study group members (also imagined as G.I. Joe members). Eventually, he causes so much trouble, G.I. Joe and Cobra have to join forces to capture him.
* ''Series/DoctorWho'':
** Every story in Season 8 is about the Master coming up with some plan to destroy the world, someone (usually the Doctor) pointing out that performing this plan would end up screwing over the Master too somehow, and the Master teaming up with the Doctor to undo the damage.
** The serial [[Recap/DoctorWhoS18E7Logopolis "Logopolis"]]. Of course, the Master turns on the Doctor, tries to destroy the Universe rather than being unable to rule it, and then kills the Doctor by shaking him off a radio telescope into a parking lot. [[TheNthDoctor It isn't the end though, as the moment has been prepared for]]. Considering how the Master is just about the closest thing the Doctor has to a rival, they've certainly been forced to team up on any number of occasions throughout their history -- usually to stop a catastrophic evil that the Master himself unleashed, and invariably with the Master turning on the Doctor shortly before or after the problem is solved. Of course, the Doctor has been anticipating betrayal all along, and has almost certainly done something clever to come out ahead regardless.
** Happens in the conclusion of "Trial of a Time Lord", when the Master reveals that the prosecutor, the Valeyard, is actually the Doctor's EnemyWithout, whom will get the Doctor's remaining regenerations if he gets the Doctor executed. The Master helps the Doctor for two reasons: to have an enemy with which he's more familiar (the Doctor vs. the Valeyard) and to retain the chance to end the Doctor's existence personally.
** In [[Recap/DoctorWhoS28E13Doomsday "Doomsday"]], the presence of just four Daleks bumps an entire army of Cybermen down from "enemy" to "temporary ally". Once the Daleks start moving, Torchwood and the Cybermen appear to ignore each other in favour of the new targets.
** Happens again in [[Recap/DoctorWhoS30E17E18TheEndOfTime "The End of Time"]], where [[spoiler:the Master saved the Doctor from being disintegrated by Rassilon. It should be noted that [[ThirdActStupidity Rassilon brought the alliance, and thus his defeat, upon himself.]]]]
** And again in [[spoiler:[[Recap/DoctorWhoS35E1TheMagiciansApprentice The Magician's Apprentice]] The Doctor goes missing and Davros turns up.]]
** Differently, in [[Recap/DoctorWhoS31E12ThePandoricaOpens "The Pandorica Opens"]], [[spoiler:[[SpacePolice Judoon,]] [[ScaryDogmaticAliens Daleks,]] [[ProudWarriorRaceGuy Sontarans,]] [[CyberneticsEatYourSoul Cybermen,]] [[LizardFolk Silurians]], [[CombatByChampion Sycorax]], [[MayContainEvil Autons]] [[ContinuityPorn and a whole load of other races]] show up to [[SealedGoodInACan imprison the Doctor]] in an attempt to [[WellIntentionedExtremist stop the non-existence of the Universe.]]]]
** [[Recap/DoctorWhoS13E6TheSeedsOfDoom "The Seeds of Doom"]] features a plant maniac who employs a number of hired guns. They spend the first four episodes of the serial [[WhyDontYaJustShootHim chasing, capturing, and recapturing]] the Doctor and Sarah Jane, only to ally with them when the [[AlienKudzu Krynoid]] [[BodyHorror that used to be]] [[MinionWithAnFInEvil Keeler]] starts to get really huge, dangerous, and indiscriminately hungry for organic matter.
** In [[Recap/DoctorWhoS32E7AGoodManGoesToWar "A Good Man Goes to War"]], [[spoiler:the Doctor calls upon the aid of the Silurians, Judoon and a lone dishonored Sontaran alongside actual friends to rescue Amy. However, the Silurians and Sontaran's reasons for teaming up isn't so much the presence of a common enemy as it is the fact that they owe the Doctor a debt.]]
** In [[Recap/DoctorWhoS12E4GenesisOfTheDaleks "Genesis of the Daleks"]] when the Doctor has the chance to destroy the Daleks at their creation, one of the reasons he gives against this is that otherwise hostile races would be forced into alliances due to this.
** Comes close to happening in [[Recap/DoctorWho2013CSTheTimeOfTheDoctor "The Time of the Doctor"]], where, like in "The Pandorica Opens", various races gather round the planet Trenzalore to restart the Time War if the Time Lords return. However much of this war is unseen and slightly subverted in that everybody is reluctant to start the war. It finally becomes EnemyMine when on the other side, the Doctor and the Papal Mainframe, including the Silents, fight together.
** Apparently what happened after [[Recap/DoctorWhoS10E3FrontierInSpace "Frontier in Space"]], where the Master and Daleks tried to cause a war between Earth and Draconia after which they would [[WarForFunAndProfit invade the Galaxy]]. The humans and Draconians are told by the Doctor to form an alliance against the Daleks.
* ''Series/{{Farscape}}'':
** Played straight in the "Liars, Guns, and Money" trilogy when Moya's crew recruit various aliens who had tried to kill them in the past to help them pull off a heist.
** Played straight and subverted with John and Scorpius multiple times as John pretends to team up with Scorpius, then John is forced to team up with Scorpius to save Aeryn (twice!), then it looks like Scorpius has betrayed them but he really hasn't, then John betrays Scorpius only to have to go back and save him again. And then they end up teaming up with Scorpius again for the miniseries, still against John's better judgment.
* ''Series/{{Firefly}}'': Does this in the episode "Trash", where the crew joins up on a heist with Saffron, the psychotic seductress who tried to steal their ship a few episodes back. Rather amusingly subverted: [[spoiler: Saffron unsurprisingly double-crosses the crew, and the crew turns on her in return, having fully expected her sudden but inevitable betrayal]].
* ''Series/GameOfThrones'': This is the reason the Wildlings are all united under a single leader. Every tribe hates each others' guts: they just hate the idea of dying in droves to [[BiggerBad the White Walkers]] more.
* ''Series/GetSmart'': In one episode, Max Smart from [[GovernmentAgencyOfFiction CONTROL]] and Siegfried from [[NebulousEvilOrganisation KAOS]] team up against a man conspiring to destroy the world, since if he succeeded they would have nothing to fight about and would be out of a job.
* Nick and Renard's relationship in ''Series/{{Grimm}}'' is like that. In other circumstances they'll be enemies, and Renard even was a villain-like character at first. They became allies because they have a common enemy; The Royal Families.
* ''Series/{{Heroes}}'': This is the favorite way they deals with Sylar.
** Volume 3 had Noah Bennet work with ''Sylar'' to stop the escaped Level 5 villains. The two barely tolerated each other but seem to have ''bonded'' by the end of the 3rd episode. Then Sylar starts up with the brain-stealing again, causing Bennet to vow to kill him eventually.
*** What Noah meant could very likely refer to [[spoiler: ''taming'' Sylar. In Season 3, Episode 4, "I am Become Death", Peter is taken to a future timeline by his future self. In this timeline, Peter discovers a calm and collected Sylar, living in the Bennet household with a son named ''Noah''.]]
** Also, in the Volume 3 finale, Bennet frees all the Level 5 supervillains so they can help fight [[spoiler: Sylar, who's on the downswing of his HeelFaceRevolvingDoor trend]]. They all last maybe 3 minutes, tops.
** Volume 5 does this ''again'' when Peter realizes that in order to prevent Samuel Sullivan's plans from coming into fruition, he's going to need Sylar's help. Unfortunately, it meant getting himself stuck inside Sylar's head and dealing with the latter's VillainousBSOD. [[spoiler: Unlike the many times before, though, it works; the two save the day, and Sylar's HeelFaceTurn seems to stick this time.]]
* ''Series/HouseOfCardsUS'': In Season 3, the Republican and Democrat congressional leadership team up to oppose President Underwood's America Works program. It backfires against the Democrats when, after America Works goes bankrupt after they cut off the money, Underwood uses it as justification to renege on his promise to not seek a term of his own in the White House.
* ''Series/KamenRiderDecade'': In the final arc, the separate ''Franchise/KamenRider'' worlds are pitted against each other in a giant war, with the losers being erased from existence, so naturally Riders and Kaijin put aside their differences in order to protect their universes. Tsukasa, in the meantime, tries to convince everyone to focus on the common enemy in [[LegionOfDoom Daishocker]]; it works almost too late, but then the death of [[Series/KamenRiderX Apollo Geist]] actually accelerates the destruction rather than stopping it. [[NiceJobBreakingItHero Dammit]].
* ''Series/LawAndOrderCriminalIntent'': Detective Goren's [[WorthyOpponent arch-nemesis]] Nicole Wallace supplies him with information allowing him to [[spoiler: prevent her fiancé from killing his own daughter, who Nicole loved as her own.]] Ironic, considering [[spoiler: Nicole killed her real daughter]].
* ''Series/{{Leverage}}'': Has Nate teaming up with [[EvilCounterpart Sterling]] for "The Zanzibar Marketplace Job".
** Also in "The Last Dam Job", the team brings in a few people who have been enemies in the past. Eliot and Quinn, in particular, have a perfectly amicable working relationship despite the fact that they tried to beat one another to death in the Season 1 finale.
* ''Series/{{Lost}}'': Has done several times, both in regards to the survivors and the Others.
** In Season 3, when [[ChainedHeat Kate and Juliet are handcuffed together]] and forced to work together to escape the smoke monster's repeated attacks. It turns out Juliet herself handcuffed them together to try and gain Kate's trust.
** Throughout the second half of Season 4, Ben joins forces with Locke's group to fight the freighter mercenaries.
** At the end of Season 4, Kate and Sayid team up with Richard and his [[RedshirtArmy army of Others]] to rescue Ben from the mercenaries.
** Then there is the reluctant team-up between Losties and the Others of 1977 in the Season 5 finale.
** Finally, Season 6 had everyone teaming up against the new BigBad. Ben Linus and Charles Widmore sure were surprised to find themselves working toward a common goal!
* ''Series/TheManFromUNCLE'': Had this trope as part of its central premise, as THRUSH forces the Western nations and their ideological opponents the Soviet Union to cooperate in forming UNCLE.
* ''Series/{{MASH}}'': Charles Winchester, ordinarily a foil to Hawkeye and B.J., will occasionally join forces with one of them against the other (usually as part of an EscalatingWar), or with both of them against a common target. The latter moments tend to highlight Winchester's JerkWithAHeartOfGold qualities, given that the people he targets are always bullies themselves, such as a racist colonel, or a man bigoted against stutterers, or the insanely jingoistic Colonel Flagg.
** Flagg's mistake was trying to blackmail Charles into helping him with a threat of prison. Charles doesn't like being manipulated in that way, and knows precisely how to deal with it (he tricks Flagg into trying to arrest Colonel Potter, and the Mayor and police chief of Ouijonbou, all three of whom have the right contact to get rid of Flagg for good now that they have something solid against him).
** One good example is the episode where Hot Lips is being accused of being a communist by a congressional aide. Without even being asked, Winchester takes a stand against the aide and takes up for Margaret.
** Due to a misunderstanding and accident of timing, the Colonel who sent Charles to the 4077th attacks Margaret (thinking she's the woman Charles procured for his entertainment). The Colonel offers to transfer Charles back to Tokyo, and all he has to do is lie about what happened with Margaret. Charles is clearly tormented by the decision, but chooses to tell the truth as he cannot stand to destroy Margaret's career for his own (relatively modest) gain.
* ''Series/{{Merlin1998}}'': Merlin himself outright states that this is his motivation for allying himself to Uther. Uther's enemy, Vortigern, is Merlin's enemy and has joined forces with an even worse enemy.
* ''Series/NaturallySadie'': While not as big of enemies as most of the other examples, this show uses this a lot to get characters who dislike one of the main cast to work alongside them, usually for a school project. One memorable incident has almost the entire teenage cast
working together in detention while the remaining member teams up with [[EveryoneCallsHimBarkeep Mallcop]] -- two examples in at one episode, there are many more.
* ''Series/TheNewAdventuresOfRobinHood'': In "Attack of the Vikings", Robin must rescue both himself and his archenemy when he and Prince John are kidnapped by Vikings.
* ''Series/{{Nikita}}'':
** {{Defied}} when Division's rival Gogol tries to enlist Nikita to help them recover a dirty bomb.
-->'''Ari Tasarov:''' The enemy of my enemy--\\
'''Nikita:''' --is just another man standing in my way.
** Played straight later when Gogol, Division, ''and'' Nikita collaborate to get Alex out of danger after she confronts Sergei Semak, the uncle who had her father killed so he could take over the family business.
* ''Series/OnceUponATime'': In the Season 1 finale, Emma and Regina briefly team up [[spoiler:
point, in order to save Henry's life]].
** Regina later teams up with Mr. Gold in Season 2, [[spoiler: in order to stop Regina's mother, Cora, from getting into the real world]].
** Season 2 ends
deal with a massive one between Regina, Emma, Snow, Charming, Gold, and Hook to save [[spoiler: Henry (again) after he gets kidnapped to Neverland]]. The team-up has...varying levels of success.
** In Season 4, ArcVillain Maleficent eventually decides to form one in the final three episodes with Emma and company, striking a deal for Emma to find Mal's daughter, Lily.
* ''Series/{{Oz}}'': Happens all the time in this prison drama as the various factions struggle for control of the drug trade, or seek to murder a rival.
* ''Series/PersonOfInterest'': In her war against [[DirtyCop HR]], Joss Carter first allies herself with crime boss Carl Elias and then has him form a temporary alliance with the rival Russian syndicate.
** At one point, Reese and Shaw team up with [[WellIntentionedExtremist Hersch]] in order to take down Vigilance, since they need to find Finch and he needs to find Control, and Vigilance has both of them.
** Early season three Team Machine also teamed up with [[TheCracker Root]] a few times, before she had actually graduated into TokenEvilTeammate. The most notable example of this was when Finch, Fusco, and Shaw were running out of time to save a [[RoaringRampageOfRevenge rampaging]] Reese, and they decided that [[GodzillaThreshold Root was the only way to get to him]].
* ''Franchise/PowerRangers'': Certain incarnations have done this, particularly ''Series/PowerRangersZeo''. The BigBad of the moment has brainwashed TheHero and the SixthRanger's attempt to save him has failed. It turns out that last year's villains have the
new villain (Carlyle) who used Ock's arm technology to send build a bank-robbing powersuit. While simply being robbed wouldn't have been enough to put Ock on the rest side of his mortal enemy, there was also the team over. They do, just to screw around with the new villains.
** Likewise, a villain variant of this was completely subverted in ''Turbo: A Power Rangers Movie.'' Newly anointed BigBad Divatox calls [[DiminishingVillainThreat decayed villain]] Rita Repulsa for help, and gets laughed at. Rita's CaptainObvious response is
fact that if she knew how Carlyle was threatening Ock's former fiancée, known to defeat Spider-Man fans as "Aunt May". (Truthfully, Aunt May being endangered wasn't really a factor in the Rangers, she would have done it already.
** On
fight. It didn't do anything except surprise Doc Ock for a moment and lead to a very funny ''Film/TheRockyHorrorPictureShow'' joke. Spidey came into the ''Franchise/SuperSentai'' side, [[Series/KaizokuSentaiGokaiger Basco ta Jolokia]] is a rare case given his [[Main/ChronicBackstabbingDisorder track record.]] [[spoiler:Zangyack would have right out won against the team in #43 if Basco had not suddenly turned against Zangyack. He even gives Marvelous back his [[Main/TransformationTrinket Mobirates and Ranger Key.]] Of course, he has his [[Main/ItsAllAboutMe own]] [[Main/GottaCatchThemAll reasons.]]]]
* ''Series/{{Revolution}}'': As of episode 14, the Resistance and the Georgia Federation have allied to open a two front war against Monroe.
** In season 2, the heroes end up allying with pretty much all their surviving enemies since they need to top the Patriots before they take over most of the old United States and enact their genocidal policies.
* ''Series/RobinHood'': In the first season of the BBC's show Robin and the sheriff temporarily
fight side-by-side in order to defeat a group of Saladin's assassins. In the third season Robin and Guy team up in order to [[spoiler: save their half-brother Archer from execution.]]
* ''Series/SaturdayNightLive'': No matter how much Sean Connery would try to antagonize Alex Trebek during the Celebrity Jeopardy skits, the two of them would often commiserate over another contestant's idiocy--note the skit where they both snark on Anne Heche's nutty behavior.
* ''Series/{{Scrubs}}'': Even features this trope when Dr. Cox and Dr. Kelso team up to break the spirit of an overly cheery coworker. However, she outsmarts them and they are back to mutual hate by the end of the episode.
** Another episode featuring Dr. Kelso has him realizing one of the reasons the hospital keeps
late as Doc Ock was already going is that everybody is united against ''him''. In after Caryle for stealing his tech and trying to kill him. To Doc's credit, he ''DID'' stop a building from collapsing just long enough to allow the future he'll purposefully invoke it innocent civilians to keep escape at Spidey's prompting. That did nothing to ''STOP'' him from letting the staff going in moments of stress or instability.
* ''Series/{{Smallville}}'': In the episode "Asylum" [[Characters/SmallvilleMeteorFreaks Ian Randall and Eric Summers]] ask for the help of [[TheHunter Van McNulty]] because he knows Clark's weakness.
** There
building collapse on Spidey, noting "you are not a civilian". Doc Ock also various times in season nine where wasn't happy about the good guys have teamed up with [[CorruptCorporateExecutive Tess]] [[WellIntentionedExtremist Mercer]]. Chloe in particular joined forces with Tess in episodes like "Upgrade" and "Sacrifice" so that they can both protect their secrets. (Tess's season ten HeelFaceTurn takes inadvertent team-up, later noting (as he told Spidey the 'enemy' out weakness in Caryle's armor), "I am not helping you -- I am hurting him." World of the equation, so all post-S9 teamups aren't this trope.difference.)
* ''Series/StargateAtlantis'': Sheppard and a wraith cooperated to escape custody of Kolya in the episode "Common Ground". This included the wraith feeding on Sheppard to have the strength to fight off their enemies, giving it the opportunity to double-cross our hero. However, he returned all the LifeEnergy he took (and possibly made up for a few months Sheppard spent in a time-dilation field) and Sheppard made good on his promise to let it go free. The wraith in question, later dubbed "Todd", would become a recurring character, and is notable for being unusually sociable for a Wraith, ** It wasn't even ''joking'' with the heroes.
** Taken UpToEleven in the final battle against the Asurans, where the Earth, Traveller, and Wraith ships fight side by side against the Asuran warships in what is hands down the single most awesome space battle any of the three series has managed (''Series/StargateUniverse'', being set on a CoolStarship, had a chance to top it before it was cancelled). This is even more impressive given the distinctly quarrelsome nature of the Wraith, thus the battle is a meld of nine factions (7 Hives, Atlantis and the Travellers) rather than 3 as some may think.
** After he escaped
the first time, Michael time Spidey and Ock teamed up with the Atlantis team to bring down his former hive after his queen snubbed him. This didn't work out well for either side.
* ''Series/StargateSG1'': Features this a great many times. It seems to be one of the favorite negotiating tactics of the Tau'ri in particular.
** Ba'al has had to join forces with SG-1 to defeat his master Anubis and the greater threat of the Replicators during the "Reckoning" two-parter. This is not the last time they'd work with him. Initially subverted, as Ba'al asked SG-1 for an alliance and was flat-out rejected by Jack O'Neill.
-->'''O'Neill:''' I've got a better idea, instead of helping you, why don't we sit around and watch you get your ass kicked? That way you'll be dead, and we'll be glad.
** Special mention just ''has'' to go to the two-parter "The Quest", where SG-1, Ba'al, ''and'' [[DarkMessiah Ori messiah Adria]] team up to solve Morgan le Fay's puzzles.
** There is
up, since they also an ''SG-1'' episode entitled "Enemy Mine", though it is unrelated to this trope at first. The conclusion is somewhat an example of this trope, as the Colonel overseeing the mine and the Unas d