Enemy Mine / Western Animation

• 101 Dalmatians: The Series
  • In "Virtual Lucky", Lucky and Cruella are sucked into a video game together, and though they spend the majority of the episode competing against each other, they realize that the only way to escape is by working together, which they do.
  • In "Shipwrecked", Lucky and Scorch are stranded on an island together and originally they each try to fend for themselves, but their constant fighting ends up sabotaging their efforts to survive. They eventually realize that they have to work together to get themselves rescued.
• Adventures of the Gummi Bears:
  • In "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 "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 Chained Heat, as well.
• Avatar: The Last Airbender:
  • A subversion occurs in "The Blue Spirit" when Zuko (in disguise) rescues Aang from Zhao because Zuko needs to be the one to capture him. Hence his 'rescue' was an attempt to capture him.
  • In "The Chase", the gang inadvertently work with Zuko and Iroh to corner Azula. This gets broken when Azula attacks Iroh while he's distracted.
  • When Zuko has a Heel–Face Turn 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 Big Bad (Zuko's father), becoming literal Fire-Forged Friends 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.
• Second season of Attack of the Killer Tomatoes! has Dr. Putrid T. Gangreen joining forces with the good guys in order to defeat Zoltan and his band of Tomatoes after they Take Over the World.
• Episode "Rhino War" of Babar has King Babar and his Arch-Enemy Lord Rataxes joining forces to avoid a war between their two kingdoms after a rhino rogue general tricks Rataxes into declaring war.
• In The Batman, when the villainous residents of Arkham Asylum are freed by an alien invasion, they 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.
• Batman: The Animated Series:
  • "Trial" features 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 For the Evulz. Now that the DA has done her job, it's time for Batman to do his...
  • Then there's the episode "Harlequinade", in which Batman recruits Harley Quinn's help to find the Joker when he steals a nuclear weapon (offering her parole as an incentive). Harley doesn't quite manage to stand up to Mistuh Jay in this episode, but she comes close. (She would eventually, later.)
• Batman: The Brave and the Bold:
  • In the episode "Game Over for Owlman!", Batman is forced to team up with his arch-nemesis, the Joker, after the rest of the heroes of the series become convinced that he has become a bad guy thanks to the machinations of his Evil Twin Owlman.
  • Again with Two-Face in the beginning of "The Fate of Equinox!", after his hired henchmen go against his decision to spare Batman.
• Happens often in the Ben 10 franchise. Ben's teamed up with Kevin, a Highbreed, Darkstar, Charmcaster, and Vilgax. Notable in that around half of these resulted in Heel Face Turns. Kevin would eventually become a good guy in Ben 10: Alien Force (while exploring the circumstances that led to him being villainous in later series), the Highbreed would also side with Ben and lead his people after Ben saves them from genetic sterility. Charmcaster waffles back and forth due to her instability and being led astray by malicious individuals, but the end of Omniverse implies she does indeed make a recovery for good. Averted with Darkstar and Vilgax, though, both remaining evil.
• In an episode of Buzz Lightyear of Star Command, Buzz and the Evil Emperor Zurg work together to beat aliens that intend to conquer the entire galaxy, including Zurg's home.
• Captain Planet and the Planeteers: The titular team and the Eco-villains don't get along very well, with the average meeting consisting of the kids trying to wreck the villain's polluting scheme of the week and the Eco-villains attempting to kidnap and/or murder the Planeteers. However, in "Smog Hog", Hoggish Greedly and the team manage to come to an agreement after Greedly's latest operation makes the air so smoggy that it sends his son, Junior, into a coma. For once, both sides want to call Captain Planet to fix things up.
• Chaotic: The four Tribes of Perim have been locked in a Forever War for as long as almost anyone can remember, but when the M'arrillians, the long forgotten fifth Tribe, break out of their prison and start taking over, they put aside their differences to combat a mutual enemy. As Season 3 shows, however, this didn't last long after the M'arrillians were defeated.
• Code Lyoko:
  • 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.
• Codename: Kids Next Door:
  • The first instance is in "Operation: Z.O.O." when the team cooperates with the Delightful Children after both are help prisoner by an evil zookeeper. (It turns sour rather quickly, as the villains are only too willing to turn on the KND once they're loose.)
  • Played for Laughs in "Operation: M.U.N.C.H.I.E.S.". After Sector V spends the whole story fighting nearly every 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. (Then all of them are able to share it at the end, making it a happy ending for everyone except Knightbrace.)
  • "Operation: L.I.C.O.R.I.C.E." plays it straight and overlaps it with Evil Versus Evil when Heinrich Von Marzipan turns up missing from the Kids Next Door Arctic Prison. The reason being he was kidnapped by rival candy pirates led by Black John Licorice, because he ate a magic seed that the pirates need to break a curse placed upon them. Numbuh Five has to join forces with Stickybeard to find Heinrich and return him to his cell before Black John and his crew plant the seed.
  • In "Operation: I.T.", the Delightful Children sell Father out and help the KND because even they can't stand broccoli.
  • Operation: Z.E.R.O. has Numbuh 1 and his father, Numbuh 0, team up with Father and the Delightful Children from Down the Lane a.k.a. Sector Z to stop Grandfather. The alliance quickly peters out when Father loses motivation (despite being implied to be stronger than Grandfather) and buggers off to go binge on ice cream, while Sector Z is forcibly transformed back into their Delightful forms and attack Nigel.
• A Very Special Episode of C.O.P.S. (1988), "The Case of the Lowest Crime", has both C.O.P.S. and C.R.O.O.K.S. joining forces against an aggressive drug-dealer.
• Danny Phantom:
  • Danny teams up with his foes to break out of Walker's prison in "Prisoners of Love".
  • In "Life Lessons", Danny and his ghost-hunting rival/enemy Valerie work together to outdo Skulker once they stop trying to torment one another. Being handcuffed together doesn't help matters.
  • In the first movie, "Reign Storm", Danny, Vlad, and Valerie have to team up to take down the much greater threat that is Pariah Dark. In fact, every enemy ghost comes to help out 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...
  • In "The Fright Before Christmas", when the Ghost Writer tries to teach Danny a lesson, all the other ghosts Danny meets in the episode agree to help him because the Ghost Writer broke the Christmas truce.
  • In "Livin' Large", the Guys in White try to blow up the Ghost Zone, unaware (or rather, disbelieving) that it'd destroy Earth as well, and Danny teams up with some of his ghostly enemies to stop them.
  • Danny and Valerie team up again in "D-Stabilized" to defeat Vlad and save Dani. Bonus points for Valerie discovering Vlad's secret identity at the end!
  • Danny and every single ghost in existence team up to turn the Earth intangible in the series finale, "Phantom Planet", to save both worlds from an asteroid.
• The title character of Darkwing Duck 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 Big Bad destroys the city, there'll be nothing left for him to rob.
    • After Megavolt's Electrolyzer malfunctions and sends him and Darkwing into the human world in "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, the best one that was available, at least.)
  • Darkwing Duck teams up with Ineffectual Sympathetic Villain Bushroot a few times.
    • "Twin Beaks" 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 "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 "The Haunting of Mr. Banana Brain", when Paddywack possesses 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 steals Megavolt's control over electricity, the Liquidator's control over water, and Bushroot's control over plant life with a magical gem in "Jail Bird". (Quackerjack had no power to steal, other than his wackiness. 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.)
• Dexter's Laboratory 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 Negative Continuity!
• The Dreamstone:
  • 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 doing more harm than good (and likely still pissed about them 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. The Dream Maker negotiates with it in return for the Urpneys releasing them (it's shrewdly implied the monster was 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 Bottomless Pit.
• The Dragon Prince: Despite centuries of conflict between humans and elves, the third season culminates in an alliance between practically everyone Viren has antagonized, human and elf alike.
• Dragons: Riders of Berk:
  • Hiccup and Alvin team-up at the end of Season 2 against their common enemy Dagur. This leads to Stoic and Alvin finally making peace.
  • Hiccup and Dagur against the Dragon Hunters in later seasons of the Netflix run.
• The Dr. Zitbag's Transylvania Pet Shop episode "Do You Believe In Humans?" had Dr. Zitbag and Officer Deadbeat (a dishonest cop who has frequently tried to get Zitbag's pet shop shut down so he can claim the castle as his new police headquarters) reluctantly join forces to drive out a pair of American tourists called the Cheeseburgers.
• Commander X-2 did this with Duck Dodgers and his Cadet on occasion — especially when his Queen was in direct danger. Awwwww.
• Duck Man has to team-up with criminal Agnes Delrooney (Grandma-ma Evil Twin) in order to survive a villain's hunting ground.
• Happened several times in DuckTales (1987):
  • In "Magica's Shadow War", after Magica's shadow gains sentience and plans to take over the world, she and the McDucks join forces to put a stop to its plot.
  • In "Beaglemania", when the Beagle Boys become music sensations, Ma Beagle and Scrooge team up to take them down, Ma because they fired her as their agent, and Scrooge so that they'll stop spending his money, since he owns the record label that signed them.
  • In "The Bride Wore Stripes", after Ma beagle scammed her way into making the court think that she and Scrooge were legally married, she and the Beagle Boys merrily spend Scrooge's money, but when he convinces her into acting like a real Housewife, or get a divorce without access to the moneybin, she takes the role so seriously, that the Beagle Boys scheme with McDuck to reveal to the authorities that the whole thing was a scam.
• DuckTales (2017)'s second season finale "Moonvasion!" has Scrooge McDuck and Flintheart Glomgold joining forces to fight off an Alien Invasion.
• Dungeons & Dragons (1983):
  • 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 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 his demonic master is freed.
  • Also, the kids form an uneasy deal with Tiamat to fight Venger in "The Dragon's Graveyard".
• The Fairly OddParents!:
  • Mr. Crocker teams up with Timmy to get rid of the new substitute in one episode.
    Mr. Crocker: 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 Vicky, Crocker, and 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.
• Family Guy:
  • A non-combat version occurs when Brian tells Francis that they have to work together to stop Peter's new religion.
  • There's also their Show Within a Show "Bigger Jaws" which parodies the concept, by having boaters fight off a shark until a bigger shark comes along, scaring them both.
    "Oh my god, now we have a common enemy, we have to work together."
  • Another variation had Meg and Connie team up to make take down a newly-popular Chris.
  • A very short alliance occurs during a fight between Peter and the Giant Chicken. While they're fighting in the sewers, an alligator pops up inbetween the two, and they both proceed to beat it up.
• The Filmation's Ghostbusters team-up with Primal Evil and his monster minions against Big Evil, a ghost so bad that even Prime Evil fears him.
• Foofur: Several episodes have the Troop helping their enemy Pepe (Mrs. Escrow's dog) due to a mutual interest. In one episode they help Mrs. Escrow gather the tax money she needs otherwise she looses the house (where Foofur and company secretly live). In another they help Pepe fight a con artist trying to trick Mrs. Escrow.
• The Fruitties: One episode features some lumberjacks cutting down the trees. The forest is so important to both the Fruitties and the boars they set their differences aside to protect it.
• This happens several times in Gargoyles. David Xanatos is such a Magnificent Bastard that the Manhattan Clan always suspects that they're being used. Occasionally, they are wrong, as in the below examples.
  • In "Eye of the Beholder", Goliath helps Xanatos to cure his wife Fox from the curse of the Eye of Odin that is turning her into a werewolf.
  • In "City of Stone", Xanatos and the Manhattan clan work together to break Demona's spell that turn every human into stone (except Xanatos).
  • In "The Gathering", the Manhattan clan helps Xanatos to protect his baby from Oberon who wants to take him to Avalon as the baby is Titania's grandson. After this, Xanatos essentially makes a Heel–Face Turn, turning more into a Anti-Villain, and the entire third season is basically an Enemy Mine situation with Xanatos and the Gargoyles against the anti-gargoyle Quarrymen.
• Happens twice in G.I. Joe: A Real American Hero:
  • Joes Flint and Lady Jaye cooperate with Cobra Commander and the Baroness to fight against the titular villain of the original Sunbow series episode "The Gamesmaster".
  • The DiC Entertainment continuation had a two-part episode called "The Greatest Evil", where the Joes and the Cobras recognize a common enemy in the drug kingpin Headman and enter an awkward alliance to take him out.
• In the Futurama Direct to Video Bender's Big Score, a trio of alien scammers scam the entire population of Earth out of the planet and force them all to leave. Robot Santa ends up teaming up with the Earthlings during the fight to retake Earth, because the scammers cheated him out of his Naughty List and he can no longer go on his annual Christmas killing spree anymore.
  Santa: Can you imagine the harm they could do with that list? I wanted to do that harm!
• He-Man and the Masters of the Universe (1983)
  • 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 Brought Down to Normal.
  • 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.
  • This happened a lot with regards to Skeletor, who was an admitted favorite of the writing staff. They were quite keen to give him some wins under his belt so he didn't come off as completely pathetic, but since villains beating heroes was a no-no at the time, the only way they could do that was to have stronger or more evil villains appear so Skeletor would team up with He-Man.
• Hurricanes episode "Target: Winston" had Winston Honeychurch fearing for his life. Amanda Carey had, at first, believed 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 this time innocent Garkos told his main thugs, Wyn and Genghis, to help her.
• Invader Zim: Despite his declaration of "just this once", 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 Continuity Nod to an episode that ended on a Snap Back), but Zim just 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...
  • In Enter the Florpus, Dib and Gaz convince Tak's ship's AI to help them rescue their father and defeat Zim's newest plan on the grounds that, since it's based on Tak's uploaded personality, it hates Zim more than it hates them.
• An episode of Jimmy Two-Shoes had Lucius team up with Jimmy to defeat Genius Beezy. Also Heinous vs Clown was made of Enemy Mine.
• Jade Armor: Against both Black Tiger and the Crimson Lord, Xinyan often half-heartedly ends up asking for Jade's help (with a lot of complaining that he has to rely on a human for help).
• Justice League:
  • In "A Better World", Luthor hilariously teams up with Superman just for the pleasure of zapping a Superman, any Superman, with a Kryptonite laser gun.
    Justice Lord Superman: Not too particular about the company you're keeping.
    Good Superman: Just one of the hard decisions I've had to make today. [to Luthor] Go for it.
    Luthor: Oh, yes.
  • Darkseid asks the League for help when Brainiac attacks Apokolips in "Twilight". Over Superman's protests, the League agree. Supes' suspicion is vindicated, since the entire plot is a ploy by Darkseid to hand over Superman to Brainiac in exchange for Apokolips' safety — and that turns out to be an even bigger ploy to grant Darkseid access to Brainiac's systems so he can take control of Brainiac and use its processing power to obtain the Anti-Life Equation.
  • In "The Return", Lex Luthor 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. Part of it is because it was personal to GL John Stewart, as he and the other Green Lanterns believe that AMAZO destroyed the planet Oa (he actually moved it to another dimension because it in the way), but he is after Luthor, who deceived and manipulated him. The League figures that the android will kill Luthor (who has apparently reformed at this moment in the series), so they decide to help him.
  • Wonder Woman and Hades against Felix Faust in "The Balance", although this wasn't by choice. She is ordered to reinstate Hades by the Gods, and when she still has some reluctance, it ends when Hermes points out how Faust is indirectly harming Wonder Woman's magical friends by usurping Hades' post.
  • In "The Great Brain Robbery", when Flash and Lex Luthor swap bodies, Grodd knows that "Lex" is really the Flash and threatens to expose him. Flash points out that they could work together to get rid of Lex which they would both benefit from, and Grodd sort of accepts: he doesn't blow Flash's cover, but only so he can prolong Flash's suffering until he's inevitably discovered and, without his powers, left at the mercy of an entire team of supervillains who hate him.
    "Lex:" Okay, look. Luthor's got you in a cage like a lab rat. He's humiliated you. You hate him, and you could help me see to it he never comes back. Dude, help me out here.
    Grodd: True, I do hate Luthor, but I hate you just as much.
    "Lex:" So... you gonna bust me or what?
    Grodd: Where's the fun in that? I'm going to watch you twist in the wind until you're discovered and they tear you limb from limb.
  • Luthor and the entire Legion of Doom are forced to help the Justice League defend Earth from invasion by Apokolips in "Destroyer". Luthor is the one who does Darkseid in. It's a collective decision of "the only one allowed to take over the planet" combined with "even villains don't want the world to be destroyed".
• Kim Possible: Despite their differences, Both Kim and Ron had to work together with both Shego and Drakken in a few occasions:
  • In the Grand Finale, the title heroine and her partner Ron team up with their longtime foes Drakken and Shego to save the planet from an Alien Invasion. Ironically, Drakken (who never once succeeded in his career as a Mad Scientist, this even being lampshaded by his rival Dementor), came up with a brilliant plan to use his newly acquired plant powers to successfully stop the alien war machines, an act that even Kim, Ron and Shego find to be impressive.
  • In a previous instance, Kim enlisted Shego's help against an old Team Go enemy in "Go Team Go"
  • In another one, Shego stopped Drakken's new sidekick from beating Kim in "Mad Dogs and Aliens".
• The Legend of Korra:
  • The 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 Zaheer, Big Bad of the previous book, helps Korra overcome her trauma at his hands so she can defeat Kuvira, a dictator who is everything Zaheer (an anarchist) hates. By the time of the finale Kuvira had a Humongous Mecha, making the situation so dire that Lin had to release Hiroshi Sato to help them defeat it, noting how if the prison's still there after the fight they can send him right back. Sadly, Sato doesn't last.
• Looney Tunes:
  • In Double Chaser, a cat is trying to hunt down a mouse, and of course there's a Bully Bulldog who gets caught up in the chase. The mouse whistles to the dog to point at where the cat is, and the cat always escapes before the dog can find him. Eventually, the dog thinks he's being played and starts helping the cat.
  • In Fox Terror, a hungry fox convinces Foghorn Leghorn to leave the farm and makes sure he brings the Barnyard Dawg with him, leaving the other chickens unguarded. By the end, the dog snaps at him for refusing to allow him to do his job, only for both of them to realise they've been had and team up to get payback on the fox.
• Masters of the Universe: Revelation: Evil-Lyn teams up with our heroes because she doesn't want the destruction of Eternia, the universe, and magic. Though both sides initially agree it's purely business, she ends up bonding with Orko, and to some extent, Teela. Beast Man also joins the heroes, but only out of sheer loyalty to Evil-Lyn.
• Megas XLR did this when Coop and Gorath got trapped in a Mirror Universe and were captured by Mirror Jamie. Then Mirror Jamie joins the Enemy Mine 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.
• Miraculous Ladybug: In "Animaestro", Marinette and Chloe team up to keep their mutual enemy Kagami away from Adrien, who all three of them have a crush on.
• In 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.
• The main plot of 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.
• My Little Pony: Friendship Is Magic:
  • In the episode "Viva Las Pegasus" Applejack and Fluttershy team up with the Flim Flam Brothers to defeat Gladmane. The brothers' only reason for helping them was that they wanted revenge on Gladmane for tricking them, and go back to their con artist ways as soon as Gladmane has been subdued.
  • In "School Raze", racist Chancellor Neighsay chains up the non-pony students in a dorm when he takes over, but then when Cozy Glow double-crosses him, the newly-freed students rescue him, and his gratitude facilitates his redemption.
  • In "The Ending of the End", even the Flim Flam Brothers are part of the epic final confrontation against the Terrible Trio.
• Ninjago adores this trope:
  • In Season 1, Lord Garmadon and the Ninja against the serpentine, due to the serpentine kidnapping his son.
  • Pythor and the Ninja against Master Chen in Season 4, as he was the one who turned humans and serpentine against one another to begin with.
  • Ronin and the Ninja against the ghost warriors in Season 5, although Ronin wasn’t exactly a villain, to begin with.
  • In Season 8, The Sons of Garmadon, very briefly, team up with the Ninja to battle a monster that ambushes them during their standoff in Primeval’s Eye.
  • In Season 10, Garmadon, yet again, teams up with the heroes to battle the Oni.
  • In Season 15, upon learning that he was the one who created the Great Devourer, Harumi teams up with Lloyd and Garmadon to fight the Crystal King.
• In The Neverending Story: The Animated Adventures of Bastian Balthazar Bux, the main character teams up with the evil female character, who even saves him at one point.
• The New Adventures of Superman episode "Luminians on the Loose". After Lex Luthor 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.
• The Owl House:
  • In "Young Blood, Old Souls", Luz is forced to team up with Lilith to save Eda after Belos decides to have her petrified, breaking the promise he made to Lilith about healing her curse. The episode ends with Lilith pulling a proper Heel–Face Turn.
  • Luz also teams up with the Golden Guard/Hunter multiple times, despite being on opposing sides.
    • In "Hunting Palismen", Hunter takes her and the Palismen prisoner, but while he's transporting them to the castle, his airship is attacked by Kikimora's dragon and crashes into the jungle just outside Latissa. Luz then saves him from being eaten by the dragon, and forges an alliance with him to take back the Palismen, despite him telling her multiple times that that's not a good idea. Hunter tries to double-cross her in the end, but Luz manages to guilt him into standing down long enough for Kikimora to attack and distract him, allowing her to run away with the Palismen.
    • In "Hollow Mind", the two of them accidentally end up in Emperor Belos's mind, and have to work together to stay alive as they're hunted down by the Palisman monster. Luz continues to try to convince Hunter that Belos is evil as they learn more about what he's actually like, and after the reveal that Hunter is the latest in a long line of Expendable Clones who were all murdered after they stepped out of line, offers him a place to stay in the Owl House. Hunter doesn't take the offer, instead having a panic attack and running off into the woods after Eda pulls them out.
• Peter Pan & the Pirates: In one episode Hook put aside his plans to kill Peter Pan and the Lost Boys because he wants to help them play Romeo and Juliet correctly, as the Wicked Cultured he is, doing a join production between Pirates and Lost Boys. Both groups seem truly to be getting along for a while, but then Hook puts real poison for Peter to drink it. When he thinks he accidentally drank it Hilarity Ensues as he performs one of the best good bye monologues ever said. It helps that he was voiced by Tim Curry.
• Phineas and Ferb: Perry the Platypus and Dr. Doofenshmirtz usually have their feud kept to each other, but there were times when they were forced into an alliance whether it's needed or they don't have a choice:
  • In the episode "Primal Perry", Doof hired a platypus hunter named Liam McCracken to trap Perry in the Danville Botancal Gardens, but McCracken betrayed Doof as he planned to turn both him and Perry intro trophies, forcing the two foes to run and fight back against McCracken.
  • This happened again in "Phineas and Ferb Save Summer", where Doof is shocked to learn that his rival Aloyse von Roddenstein (or Rodney for short) has formulated a plan to create a new Ice Age based on one of his successful schemes. As such, Doof openly voices his objections to it, knowing that it will endanger billions of lives, though Rodney doesn't care (as he still wants to show everyone who's in charge). As Rodney enacts his plan by disabling the reverse process on his machine that may prevent the cataclysm from happening, this resulted an angry Doof to smack out Rodney and trying to take down the machine. Even Perry too shares Doof's disgust over Rodney's scheme (as the cataclysm would also endanger his host family as well) and personally helps Doof in taking down the machine to save the Earth.
• In The Pirates of Dark Water 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.
• Episode The Terrible 5 + 1 of Plastic Man mixed with a Villain Team-Up episode; after been freed from prison by Solex, villains The Weed, Half-Ape, Clam, Computerhead and Disco Mummy end joining forces with Plastic Man against Solex, because he doesn't let them do their villain stuffs as they want.
• Popeye: The Wartime Cartoon "Seein' Red, White, and Blue" involves Bluto trying to dodge the draft, until he sees Popeye getting ganged up on by some Axis spies and jumps into the fray in defense of his longtime rival.
• The Powerpuff Girls:
  • 1998 Original Series:
    • "Moral Decay" has Buttercup knocking out villains' teeth in order to obtain money from the tooth fairy in an effort to save up for a new punching bag after trying to knock Bubbles' teeth out intentionally after doing so unintentionally. Buttercup eventually becomes impatient and knocks out the teeth of the main villains when they're not doing anything. When the villains tell Blossom and Bubbles what she was doing behind their backs, they work together to set up an ambush for Buttercup to teach her a lesson, where the villains knock her teeth out in return. Moreover, Buttercup loses the stash of money she earned through her scheme when the Professor uses it to pay off her dental bills.
      Buttercup: [frightened] Uh, girls, uh... a little help here?
      Blossom: Sorry, Buttercup, you know what they say; an eye for an eye...
      Bubbles: [lisping] And a tooth for a tooth!
    • "Forced Kin" had them needing Mojo Jojo's help to beat this huge alien thing that was so evil even Mojo considered it his superior.
    • "Aspirations" had the Gangreen Gang helping the girls to defeat Sedusa after she abandons them when she no longer needed them for her plan.
  • In the 2016 reboot, Bubbles joins Mojo Jojo in a rampage of Townsville after half of her face becomes disfigured, blaming Blossom and Buttercup for it and being shunned by the rest of the city. Doesn't last long, of course.
• In one episode of The Real Ghostbusters, a guy hates chickens so much, that he actually summons a demon to make 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.)
• 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 Magnificent Bastard 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."
• 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.
• The Season 7 finale of Robot Chicken had the titular Robot Chicken and the evil Mad Scientist who turned him into a robot chicken team up to stop the Scientist's psychotic son, who kidnapped all the living presidents of the United States.
• Samurai Jack: In "Jack and the Scotsman", Jack finds a Worthy Opponent in a Scottish outlaw. Though the two clash in almost every way, they form an alliance against an army of bounty hunters working for Aku, which gives them a newfound respect for each other.
• This is the entire premise of Shadow Raiders as four waring planets that has been enemies for generations have to team-up against the biggest enemy, Planet Beast, that treatens all.
• One episode of She-Ra: Princess of Power featured She-Ra and Hordak accidentally sent to another dimension and having to join forces to return.
• On The Simpsons, both Bart and Lisa were forced to team up with Bob on two occasions:
  • Bart and Lisa teamed up with him 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.
  • In "The Great Louse Detective", Bob is released from prison to help the Simpson family figure out who is the Serial Killer trying to kill Homer.
• The Smurfs team-up with Gargamel in a couple of episodes, generally very briefly and normally because they have each other love ones in danger, like some Smurfs and Azrael kidnapped by the same foe or when facing a mutual threat like Nemesis.
• Sonic Boom has this as a recurring theme in its episodes. A few examples include:
  • In "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 creates a time loop during a battle with Sonic and his friends, and since this time loops resets any victory he has over them, 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 Nominatus, who has overtaken them with a digital virus.
  • In "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 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 "Nominatus Rising", Tails and Knuckles bust into Eggman's lair to confront him when the team finds the returning Nominatus has entered the real world via Tails' Build-it Box with his two minions, Retro and Beta, in tow (though they don't recognize the trio) and believes it's Eggman's doing. Tails shows the security footage of his workshop that the team used to find out the three were in the real world in the first place and, knowing Nominatus all too well from the last time he showed his face, decides to join forces with Team Sonic once again to stop him.
• South Park:
  • Played with when the Coon asks for Professor Chaos' help with Mysterion, which is actually more of a Villain Team-Up.
  • In "It's A Jersey Thing" Randy decides to turn to Al Qaeda for help.
    Randy: Our country's getting back to normal, and we owe it all to Osama bin Laden. 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 Goths and their sworn enemies, the Vampire kids, team up to defend the world from their greatest foe: emos.
• The Spectacular Spider-Man:
  • In one episode, Spidey made a temporary alliance with 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 Hammerhead and Silver Sable 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 Tombstone to take down their mutual foe, the Green Goblin.
• SpongeBob SquarePants: 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".
• Star Wars: The Clone Wars
  • In the first season, Anakin and Obi-Wan temporarily teamed up with Dooku to escape from Hondo's base, where they were all mutually imprisoned.
  • In the finale of Season 4 Obi-Wan and Ventress team-up against Savage and Maul.
  • This became the first of a couple of Enemy Mines Obi-Wan had against 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 Maul's take-over of the Death Watch and Mandalore. Bo-Katan even lampshades this when she does an earlier Enemy Mine 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.
    • Ventress pulls another Enemy Mine with Ahsoka in the penultimate episode of Season 5 after the latter (mistakenly) convinces her that her former master, Dooku, might be behind the bombing that Ahsoka was framed for, and Ventress realizes that they both have a lot in common, since they were both seemingly forsaken by their masters.
  • Averted when—after Order 66 is given—Ahsoka frees Darth Maul from his confinement. Maul thinks she wants them to fight the clonetroopers together, only to be told she's not interested in a team-up; Ahsoka wants Maul to cause chaos as a distraction so she can be free to do her own thing. She even outright says "I'm not rooting for you" when he asks if she could at least give him one of her lightsabers. Maul returns the favor by taking the only functional vessel off the star destroyer as its crashing into a planet and leaves Ahsoka and Rex to die. Luckily, both of them get out of it alive.
• Star Wars Rebels:
  • "The Honorable Ones": Thanks to a scene that demonstrates the inadvisability of fighting in an escape pod, Zeb and Agent Kallus wind up stranded on a icy moon of Geonosis and are forced to work together to survive. For added fun, the two are archenemies due to Kallus' involvement in the genocidal campaign that slaughtered the population of Zeb's homeworld. It goes better than you'd think, thanks to the events of earlier episode "Legends of the Lasat" helping Zeb to move on, and Kallus ends up revealing some of his Dark and Troubled Past. The events of this episode end up triggering a full-on Heel–Face Turn for Kallus.
  • "Twilight of the Apprentice": (Darth) Maul briefly teams up with Ahsoka, Kanan and Ezra against the Inquisitors. However, it ultimately turns out to be a Cooperation Gambit, as Maul has ambitions to activate an ancient Sith battle station and make Ezra his new apprentice as a means of getting revenge on all of his enemies, including both the Empire and the remaining Jedi.
  • In "The Last Battle", the heroes manage to join forces with a group of Separatist Droid Army remnants against an Imperial attack. The two groups part amicably, though General Kalani refuses to join the Rebellion permanently, since he considers their position to be ultimately untenable.
• In Steven Universe, Peridot eventually teams up with the Crystal Gems to stop The Cluster, or else they all die. 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.
  • Deliberately invoked by Steven in "Restaurant Wars", when he presents a threat to both Fryman's and Kofi Pizza's businesses to force them to cease hostilities and unite against him. He does this after learning that was how the last Fryman-Pizza war was resolved, years ago.
• In Street Fighter episode "Strange Bedfellows" (for those who don't know, it's a former name of this trope), Guile and Bison teamed up against Akuma.
• The Superhero Squad Show would occasionally have the heroes and villains work together to defeat a common enemy.
  • In "Mother of Doom", the Squad team up with Chthon to help him get his powers back from Doctor Doom.
  • All the heroes and villains join forces to stop Galactus in "This Al Dente Earth".
• Shere Khan assisted Baloo in a few 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).
• Teenage Mutant Ninja Turtles (1987):
  • 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 Turtles Forever. Krang and '87 Shredder join forces with the '87 and '03 Turtles at the end to stop the Utrom Shredder from destroying the multiverse.
• The fifth season of the 2003 Teenage Mutant Ninja Turtles series features the Turtles (along with the Ninja Tribunal's human accolades and the Justice Force) 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 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.
• Done twice in Teenage Mutant Ninja Turtles (2012), once in "Baxter's Gambit" when Xever saves Raphael from the giant fan, saying that only he gets to kill the turtle and again in Annihilation!Earth, when Splinter and Shredder work together to stop the Triceratons, only for Shredder to turn and literally stab Splinter in the back.
• Teen Titans:
  • 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 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, he was Robin in disguise this time the Red X suit was stolen by an unknown person.)
• Thomas & Friends:
  • 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 prejudiced, 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 Diesel 10 for help.
• Several Tom and Jerry 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.
• Total Drama:
  • Gwen and Leshawna both considered Heather their Arch-Enemy and the feeling was mutual, but they were ultimately all on the same team and thus had to begrudgingly work together to win challenges during the first two seasons. Leshawna finally ended up on a different team in the third season (and really made the most of that when she faced Heather in one particular challenge), while Gwen was stuck with her in seasons 3 and 5 as well, and therefore ended up in several more of these situations with her.
  • Duncan and Harold were forced to work together in the final few episodes of Total Drama Action when they are left on the same team with Leshawna and Heather, both of whom cannot be trusted (the former for fake crying to win a reward and the latter for being the Alpha Bitch of the first season). Also, Duncan and Beth in the season finale.
  • In Total Drama Presents: The Ridonculous Race 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.
• In Transformers it's not unusual to see the Autobots and Decepticons (or expies of them) joining forces to take on a greater threat. It just takes a very large threat to make them do it. Usually Unicron, but not always.
  • The Transformers:
    • 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 interesting.
    • In "Countdown to Extinction", it's Megatron and Optimus Prime cooperating again to stop Starscream's Doomsday Device. Watching Optimus worry over the damage Megatron is taking to unbolt the device is fascinating.
    • In "The Revenge of Bruticus": The Autobots and Decepticons team up to take down the titular combiner, since the Combaticons' plan involve the entire Earth being thrown into the sun, which the Decepticons so happen to be residing on. Optimus is the one to force the team-up, since he (rightfully) doesn't trust Megatron to handle things on his own.
    • In "Five Faces of Darkness, Part 5", Blitzwing is the only Decepticon to know that the Quintessons are double-crossing them, but is ignored by his leader Galvatron. Cue him teaming up with the Autobots to stop the Quints' plan, which threatens to annihilate all Transformers. This stunt has consequence of getting ol' Blitzwing kicked out of the Decepticons, with Galvatron swearing revenge.
    • 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.
  • Transformers: Animated:
    • Lampshaded when Sari is left alone to deal with Swindle after he shuts down the city and Autobots with a disruptor beam. The group of B-level villains that helped him gather the parts for it decide to team up with her and Bumblebee after they are betrayed by Swindle to get back at him.
      Nanosek: We want to give Swindle a little payback for his doublecross.
      Slo-Mo: So we thought, why not join forces with you and your little Autobot friend?
      Sari: Uh, no offense but, you're a bunch a lowlife crooks! Why should we trust you?!
      Proffessor Princess: Because the enemy of my enemy is my friend!
    • 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 Back-to-Back Badasses 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.
  • Beast Wars:
    • This happens 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.
      
      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 2, when an alien ship appears that 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 Tarantulas does team up with the Maximals in order to prevent Megatron from using the Vok technology to leave Earth.
    • Dinobot's alliance with the Maximals is initially just this to him. Optimus, on the other hand, quickly considers 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?
  • In Beast Machines, the Maximals join forces with the surviving Vehicons to survive when Savage appears.
  • Transformers: Prime:
    • The Autobots temporarily team up with Megatron to stop Unicron from awakening.
    • Bulkhead and Breakdown team up against MECH. It works pretty well until Starscream, asshole that he is, gets involved.
• The burgeoning threat of Lord Dominator in the second season of Wander over Yonder leads to some unlikely hero/villain tag teams, most notably Commander Peepers and Sylvia.
• The Wild West C.O.W.-Boys of Moo Mesa episode "Dances with Bulls" had the C.O.W.-Boys' leader Marshal Moo Montana and the series' main antagonist Sherrif Terrorbull team up to track down the Gila Hooligans.
• Winx Club 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 Season 2 arc ^note in the original at least, as the Winx specifically mention this while heading to CT, the witches still dread teaming up with the fairies.
• In the W.I.T.C.H. Season 2 episode "W is for Witch", Will decides to recruit season one Big Bad Prince Phobos and his crony Cedric in subduing Nerissa. The end result? The start of a Gambit Pileup that doesn't end until the series finale!
• WordGirl: In the episode "The Robot Problem", the Coach steals Robot Master villain Tobey's latest robot design and uses it to make his own giant robot. When WordGirl finds herself unable to dent it, she goes to Tobey for help, and the two make an even bigger robot that's capable of taking the other one out. WordGirl even notes at one point that they make a pretty good team, to Tobey's lovestruck delight.
• X-Men: The Animated Series did this with every appearance of Magneto after his introduction. Every. Single. Appearance. Except for one time when he helped Apocalypse capture a psychic-empowered mutant for his master plan but even then Magneto eventually cut ties with Apocalypse. It got to the point where, during the Grand Finale, he was considered an honorary X-Man, and shown as part of the team in the final shot of the series.
• In the X-Men: Evolution episode "Survival of the Fittest" they worked with the Brotherhood to stop Juggernaut. 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 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.
• In Xiaolin Showdown, twice Jack has to do this with the heroes:
  • One episode has the Card-Carrying Villain 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, even the world itself, until there is nothing left. The villains don't like this as they want to rule the world, not destroy it. Omi and Chase Young team up to stop the spiders and save the world. Chase even uses this as part of his plan to convince Omi to join his side.

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