->'''Garland:''' About that... I was thinking maybe we wouldn't destroy everything so much as rule over it, you know?\\
'''Black Mage:''' That's not going to work.
-->-- ''Webcomic/EightBitTheater'' ([[http://www.nuklearpower.com/2008/08/26/episode-1029-viral-heroing/ Episode 1029: "Viral Heroing"]])

Our first character or faction is a villain with either [[PragmaticVillainy a sense of self-preservation]], [[ForTheEvulz a taste for others' misery]] or a plan to TakeOverTheWorld. He's an evil guy, no mistaking it, but happens to ''enjoy'' his life and would prefer that the world continue existing, if only to continue his EvilOverlord rule, indulge his greed, lust, and/or generally pursuing his own evil interests and schemes.

Our second character is a StrawNihilist, an OmnicidalManiac, or an EldritchAbomination and wants to bring about TheEndOfTheWorldAsWeKnowIt. Even if the first villain would be able to somehow escape from this disaster unharmed, there likely wouldn't be anyone left to rule over or torment for his own twisted pleasure. So the first villain steps in to, surprisingly, [[EnemyMine help save the day]], if only to prevent the second from upsetting the status quo that allows him to continue being evil on his own terms.

A subtrope of EvilVersusEvil where the story avoids DarknessInducedAudienceApathy by offering two reasonably different flavors of evil. May overlap with EvenEvilHasStandards and EnemyMine or result in a MeleeATrois with the heroes. Often present in worlds with AngelsDevilsAndSquid, with the Devils representing Evil and the Squid representing Oblivion. Villains opposing TheEndOfTheWorldAsWeKnowIt can be on any part of the "evil" side of CharacterAlignment, although LawfulEvil ones are a bit more common since they rely on an established system of rules to benefit themselves, which would be upset by a threat of this scale. ChaoticEvil and NeutralEvil examples generally have the "I'm having too much fun to stop now" motivation in comparison. On the flipside, the oblivion side can be the sympathetic side too, especially if the villain in question is a WoobieDestroyerOfWorlds wanting to destroy the world to end the cycle of suffering caused by the evil side by any means necessary. After all, if the universe is already in a state of endless suffering, it is a lot easier to end the cycle by destroying it all than trying to restore it.

A typical stock justification the usual villain uses to gain the heroes' trust (which pretty much ''always'' works and is reliable) is to say "This planet is my home too."

This trope has a FridgeBrilliance side: it justifies many heroes for their ThouShaltNotKill attitude. The FridgeLogic side is that a villain who sides with the hero to prevent world destruction should realize it's not that smart trying to kill the hero in the next episode. He may achieve world domination, then end up having the world destroyed because the hero is not there to fight the greater evil any more. See PragmaticVillainy for more examples.

A subtrope of TheGoodTheBadAndTheEvil and EvilVersusEvil.



[[folder:Anime and Manga]]
* ''LightNovel/{{Slayers}}'':
** ''Slayers Try'' has Xellos, who wants the world to be destroyed -- [[TheOnlyOneAllowedToDefeatYou but by locals]]. So when aliens try to do it, he works against them.
** Xellos in ''Slayers NEXT'' takes the side of Evil against the rogue Dark Lord who wants to destroy the world. The end-of-the-world fails and Xellos was entangled in this all. Complete with [[spoiler:him appearing healthy and smiling]] right after destruction of the strongest Dark Lord who tried to bring it all down. It seems that he and his boss are more interested in power struggles between their kin than in serious apocalyptic activity. And then there's..."[[http://www.youtube.com/watch?v=GNLazPR48Ww My Evil Plan to Save the World]]" AMV with Xellos.
* ''Manga/MajinTanteiNougamiNeuro'' had Neuro, a demon who feeds on solving mysteries (like solving who killed someone) faces down Sicks, who wants to kill every human because, if every human was dead, who would kill each other and provide mysteries?
* While mostly doing anything for amusement, Alucard of ''Manga/{{Hellsing}}'''s stated reason for working for the good guys is that if vampires in general won, they'd eat all the humans, and there wouldn't be any left.
* In Franchise/{{Pokemon}}:
** An odd variation in ''Manga/PokemonDiamondAndPearlAdventure'': [[WellIntentionedExtremist Cyrus's]] plan is to wipe out the universe and create a new, perfect one. When he realizes that the [[OlympusMons legendary Pokémon]] he summoned to do it will only destroy everything ''without'' the ability to recreate anything, he decides that even a horrifically flawed world is better than no world at all. Basically, he played this trope on ''himself''.
** In the second arc of ''Manga/PokemonAdventures'', this is the reason [[TheDon Giovanni]] stands up against [[OmnicidalManiac Lance]].
** In ''Anime/{{Pokemon 2000}}'', Ash is bewildered when [[TerribleTrio Team Rocket]] assists him against the threat. They explain that they are ''thieves''; they have no interest in killing, and definitely don't want the world to be destroyed.
* In the final arc of ''Anime/MobileSuitGundamWing'', Milliardo Peacecraft plots to destroy Earth out of a misguided belief that the people of the Space Colonies were purer in purpose than those of Earth, who he saw as hopelessly tainted with the specter of the planet's bloody history and could never achieve lasting peace. Among the people arrayed against him is Treize Khushrenada, the leader of OZ, who the protagonists have fought on many occasions. For all his faults, he loves the Earth and does not want to see his people destroyed. [[spoiler:It's implied that Treize and Milliardo cooked up the war between them to exhaust humanity's will to fight and demonstrate the foolishness of war once and for all...and it sort of works.]]
** And by, it sort of works, it ends the Earth vs Space Colonies conflict that defines the Gundam Wing Universe. [[spoiler:For a couple of months, before another warmongering lunatic starts up a coup right as everyone else was disarming themselves. Naturally.]]
* Jinnai of ''Anime/ElHazardTheMagnificentWorld'' is the main characters RivalTurnedEvil and a self-proclaimed YoungConqueror. [[spoiler: However he's quick to join with the heroes when the true BigBad tries to destroy the world. Claiming that meaningless destruction is anathema to a true conqueror.]]
* ''Anime/DragonBallZ'' opens with [[AliensAreBastards alien invader Raditz]] coming to find his younger brother Kakarot (Son Goku) and obliterate all life on Earth. Naturally, previous BigBad Piccolo would rather rule the world himself and as a result teams up with Son Goku to defeat him. [[spoiler:This event ultimately leads to him taking a HeelFaceTurn after befriending Goku's son, Gohan, while training to prepare for the arrival of Raditz's even more powerful comrades.]]
** Happens literally in the Tournament of Power arc in ''Anime/DragonBallSuper'', where heroes and villains from various universes have to team up in order to prevent their universe from being erased. The situation is so serious that Goku and Freeza actually fight as teammates.
* ''Anime/PuellaMagiMadokaMagica'' has [[spoiler: the conflict between [[MentorMascot Kyubey]] (Evil) and [[EldritchAbomination the witches]] (Oblivion). Unlike most examples, however, it’s the ''{{Omnicidal Maniac}}s'' who are portrayed sympathetically, since [[ManBehindTheMan Kyubey is the one who]] [[DealWithTheDevil tricked them into becoming]] {{Magical Girl}}s and later [[WasOnceAMan witches]], [[AMillionIsAStatistic getting millions of innocent people killed in the process and not giving a crap,]] all in the name of [[WellIntentionedExtremist saving the universe from heat death]]. The witches, by contrast, want to ''[[DarkMessiah save]]'' humanity from the Incubators’ rule, albeit [[MercyKill in thier own twisted way]] by [[DrivenToSuicide driving them to suicide]].]] It’s rather ironic that [[spoiler: the villains trying to ''destroy'' the world/universe are widely considered [[WoobieDestroyerOfWorlds more sympathetic]], while the one trying to ''[[SaveTheWorld save]]'' it is considered a [[EvilerThanThou greater evil]], a [[TheSociopath heartless bastard]], and [[HateSink the most hated character in the series]]. Walpurgisnacht wants to destroy the world, Kyubey wants to save it. Walpurgis comes off better]].

[[folder:Comic Books]]
* Doctor Doom has helped save the world almost as many times as he's tried to conquer it. Notable instances include fighting against ComicBook/{{Thanos}} and ComicBook/{{Onslaught}}. Plus he pulls a lot of {{Enemy Mine}}s with Richards against stuff like rogue Celestials or the Over-Mind.
* In the Creator/MarvelComics ''[[Comicbook/TheSentry Sentry]]'' miniseries, as the heroes are gathered to stop [[BigBad the Void]], Franchise/SpiderMan notices ComicBook/DoctorOctopus (one of his many {{Archenem|y}}ies) lined up with them. Dialogue goes something like this:
-->'''Spider-Man:''' Doc Ock? What are you doing here?\\
'''Doctor Octopus:''' We need to stop the Void or else it'll destroy the world. Once this is over, next time I see you I'll kill you.
* This is what got Loki to turn against Surtur. Loki wants to conquer Asgard, but [[OmnicidalManiac Surtur]] just wants to burn everything. This leads to a trope-summarizing [[CrowningMomentOfAwesome crowning triple battle-cry of awesome]] as three gods charge into combat:
-->'''Odin:''' For Asgard!\\
'''Thor:''' For Midgard!\\
'''Loki:''' For myself!
* This happens during most of the CrisisCrossover events too. During ''ComicBook/CrisisOnInfiniteEarths'' and ''ComicBook/InfiniteCrisis'' a wide variety of supervillains attempted to aid the heroes, as the apocalypse was something they all wanted to avoid. Special note should go to the Crime Syndicate in the first Crisis, who die trying to save Earth-3 from the Anti-Monitor, and {{ComicBook/Darkseid}} who finally lifts a finger when he realises that the Anti-Monitor threatens Apokolips as well as Earth.
* In ''ComicBook/SecretInvasion'', the Hood and his group of villains rally against the Skrulls, alongside ComicBook/NormanOsborn who's running a team of psycho ''ComicBook/{{Thunderbolts}}''. Even death gods like Atum the Godeater and Amatsu-Mikaboshi team up with ComicBook/TheIncredibleHercules and [[ComicBook/AlphaFlight Snowbird]] to wage battle against the pantheon of the Skrulls.
* ComicBook/LexLuthor has done this repeatedly. In ''ComicBook/{{Aztek}}'', ''ComicBook/OurWorldsAtWar'', ''ComicBook/InfiniteCrisis'', and several other events, he allied himself with Franchise/{{Superman}}, his {{Archenemy}}, to try and prevent the end of the world. During the Russian General Zod's attack on the States, it was actually Luthor who saved the day, turning the sun yellow again and allowing Superman to overpower the red sun-fuelled Zod. This makes sense, since Luthor, as a DiabolicalMastermind, VillainWithGoodPublicity, and briefly, PresidentEvil, needs a world within which to function.
** He does it again in ''ComicBook/FinalCrisis'', in which he's shown that despite being a miserable sociopath, a tiny sliver of Luthor loves life enough to revolt against Darkseid.
* No matter what side of the HeelFaceRevolvingDoor he's on at the moment, ''ComicBook/XMen'''s ComicBook/{{Magneto}} can always be counted on to help out when a greater evil shows up. After all, a nutjob who's trying to blow up the planet is as much of a threat to the well-being of mutantkind as AllOfTheOtherReindeer.
* ComicBook/{{Galactus}} has the unusual distinction of being ''both'' sides of this trope. When he shows up to devour Earth he's "oblivion". Yet against universe-scale threats (ComicBook/{{Annihilation}}) he's "evil". Serving in the later role may also be his true ''purpose'', the [[NecessaryEvil reason higher powers put up with him going around devouring planets]].
* Played with in ComicBook/LesLegendaires; [[EvilSorcerer Darkhell]] gladly tries to help in preventing the reviving of OmnicidalManiac [[GodOfEvil Anathos]] on his native world Alysia, but only because this requires killing his [[ArchEnemy Arch-Ennemies]] the Legendaries to ensure Anathos won't reincarnate in one of them; other than that, he could hardly care less about Alysia's fate. Later however, when Anathos still succeeds in coming back, he still helps the Legendaries escape and fight Anathos, even committing a HeroicSacrifice in the process. This time, it is motivated by his desire to protect his beloved daughter Tenebris.
* Comicbook/{{Lucifer}}: Fenris the Wolf wants to destroy all Creations. Lucifer wants to save at least his own Creation. Various factions assist and ally with both parties.
* ''ComicBook/PS238''. This trope motivates Victor and Zodon to help save Earth from an AlienInvasion.
* In ''ComicBook/PaperinikNewAdventures'', [[TheSyndicate The Organization]] is a group of illegal time-travelers bent on stealing from the past and trying to change it to become the supreme rulers of the future. But when the whole timeline was about to be deleted, they quickly ally with Paperinik to save themselves and their job (they were planning a double-cross when the danger was gone).
* The ''Franchise/StarWars'' comic "Betrayal" in the ''Jabba the Hutt: The Art of the Deal'' miniseries has Bib Fortuna leading a conspiracy to overthrow Jabba and gain control of his criminal empire...only to find himself outmaneuvered by ''another'' plot by a third party, this one with the goal of ''killing'' Jabba by having him eaten by a horde of ravenous, weasel-like beasts called freckers. Fortuna then orders his men to shoot the freckers; when one of them asks why they should bother saving the life of a creature they all hate, Fortuna points out that 1) Jabba must be kept alive so that he can be interrogated about where all his secret stashes of loot are located and 2) (more importantly) freckers kill ''everything'' they see that isn't officially allied with them, meaning that Fortuna and his henchmen are on the menu too.

[[folder:Fan Works]]
* ''FanFic/TheBridge'':
** One could broil down the EvilVsEvil battle between [[Literature/NESGodzillaCreepypasta Red]] and the [[OmnicidalManiac unnamed main villain]] to this. One delights in torture and agony, but requires life to do so. The other only wants to unmake everything that lives. [[spoiler: Played for horrifying implications when Red loses.]]
** Similarly, the Nightmare Forces send Rarity a nightmare in an attempt to warn her about the main villain's plans, as they require living beings to plague with nightmares.
* The crux of ''FanFic/SonicXDarkChaos'' is the final battle between [[{{Satan}} Maledict]] and [[EldritchAbomination Dark Tails]]. One is a ruthless [[WellIntentionedExtremist but principled]] HumanoidAbomination who wants to rule the entire universe, the other is an incomprehensible OmnicidalManiac.
* In ''FanFic/HarryPotterAndTheMethodsOfRationality'', [[TheChessmaster Rational!Quirrelmort]] wants to prevent [[spoiler: [[ScienceHero Rational!Harry]]]] from accidentally destroying the world. [[spoiler: Just as Dumbledore planned.]]
* In Fanfic/AshesOfThePast, Team Rocket has an entire department dedicated to fighting potential world-ending crises, because in order for Team Rocket to rule/steal from/extort the world it has to exist. Also it's good PR, and it's easier to get power if people actually like you.
* ''Fanfic/EarthsAlienHistory'': The threat of the [[Franchise/MassEffect Reapers]] to all sentient life in the galaxy is enough to even get groups like the [[Franchise/{{Metroid}} Space Pirates]] and the [[Franchise/{{Transformers}} Decepticons]] to join in on the war effort against them.

[[folder:Films -- Live-Action]]
* {{Inverted|Trope}} in ''Film/XXx''. Xander tells the agent he works for "when you hire somebody to save the world, make sure they like the world the way it is."
* ''Film/TheMummyReturns'' opposes O'Connell, Imhotep, and the Scorpion King. They are trying to save, conquer, and destroy the world, respectively.
* This may be Lucifer's motivation in ''Film/TheProphecy'' for intervening against Gabriel's plan to destroy humanity. He describes Gabriel's dream world as "another Hell," which is one Hell too many for him. Whether Gabriel's world would really be TheEndOfTheWorldAsWeKnowIt is not clear, and of course Lucifer could be lying anyway (he's famously good at that), but if we take him at his word, then he is indeed Evil Against Oblivion.
* In ''Film/GuardiansOfTheGalaxy'', Rocket doesn't care about Ronan's plans to destroy the galaxy, until Peter Quill points out, "We ''live'' in the galaxy!"
* Max Shreck [[InvokedTrope tries to appeal to Batman this way]] during the climax of ''Film/BatmanReturns'': his goal of constructing a giant capacitor to harness all the electrical energy in Gotham City and selling it back to the citizenry obviously clashes with the Penguin's desire to ''blow up'' Gotham City [[OmnicidalManiac (and, if he only had the resources, every other city on Earth as well)]]. In addition, Shreck's great plan won't be able to go forward if he's not alive to get it started, which is why he's grateful to Batman (despite obviously being another foe of his) for saving him from being murdered by Catwoman. But when Shreck tries to tell Batman, [[IAmTheNoun "You're not just saving one life; you're saving a city,"]] the hero cuts him off with a harsh ShutUpHannibal
* Also happens at the climax of ''Film/TheRocketeer'', when the FBI and Eddie Valentine's mob stand shoulder to shoulder, unloading their tommy guns at a Nazi army invading Los Angeles. Though natural enemies, [[WeAreStrugglingTogether they are all Americans]], and stand to lose equally if Nazi Germany conquers the earth.
* This is the motivation behind [[spoiler:Albert Wesker's]] actions in ''Film/ResidentEvilRetribution''. [[spoiler:He forges an alliance with Alice and reinfects her with the T-virus because humanity's on the brink of extinction, and he does not want to go down with it.]]
** In ''Film/ResidentEvilTheFinalChapter'', [[spoiler: it's revealed that Wesker was actually manipulating Alice into aiding the Umbrella Corporation's plans to wipe out all humans not actually apart of Umbrella, who would then inherit the Earth. The [[AIIsACrapshoot Red Queen]], who turns out to have been GoodAllAlong (in a very much GoodIsNotNice way), helps Alice save the world.]]

* In the ''Literature/HIVESeries'', we have the Global League of Villainous Enterprises (G.L.O.V.E.), which is a band of supervillains who keep each other in check, making sure that there's still a world for them to rule over. The [[AcademyOfEvil H.I.V.E.]] itself teaches the Alphas not to commit senseless acts of violence, a major theme of their lessons being "we are not common criminals."
* In Creator/JackChalker's ''Literature/DemonsOfTheDancingGods'', there is a sorcerer plotting to bring about the end of the world. Every other evil sorcerer in the world is against him, once they find out, because they've all done a DealWithTheDevil to enhance their power and consequently, want to postpone Judgement Day as long as possible.
* Crowley from ''Literature/GoodOmens'' is a demon who rather likes the world and doesn't want the apocalypse to come and ruin everything. In order to avert it, he conspires with Aziraphale, an angel who has spent too much time on Earth and now considers heaven unbearably boring, and wouldn't mind postponing the final battle between good and evil.
* The big twist at the end of Creator/RogerZelazny's ''Literature/ANightInTheLonesomeOctober'' uses this. [[spoiler: The Count ([[{{Dracula}} yes, that one]]) faked his own death to improve his side's odds in the ritual that will either save or destroy the world...and he wants to save it. "I like the world as it is."]]
* In ''Literature/TheDresdenFiles'', Harry often gets help from John Marcone, the crime lord of Chicago. This is because Marcone realizes that if the latest supernatural threat takes over a significant portion of the world, or blows up a large part of Chicago, it would be very bad for business.
** Of course, it doesn't hurt that he has a tendency to gain something every time, whether it be the appearance of having a wizard on his payroll, [[spoiler: becoming an independent power under the Unseelie Accords]], or what have you.
** ''Ghost Story'' implies that Marcone has actually become Chicago's [[spoiler: main defender against the supernatural]] in the wake of [[spoiler: Harry's apparent death]].
** Lara Raith has sided with Harry against far greater evils for similar reasons, because it's hard to coyly prey upon the human population when it's been decimated.
** In ''Literature/ColdDays'' this trope basically sums up the conflict between [[spoiler:[[TheFairFolk the Winter Fae]] and the [[EldritchAbomination Outsiders]].]]
* "Another Fish Story" by Creator/KimNewman, essentially a VillainEpisode for his recurring archvillain Derek Leech, has Leech sabotage an attempt to bring about the end of the world -- not because he wants to save the world, but because it's unsubtle and uncreative, and his own plan for the end of the world is much better. The stories "Cold Snap" and ''Seven Stars'' have Leech forming EnemyMine alliances with the Literature/DiogenesClub for similar reasons. (Also siding with the Diogenes in "Cold Snap" are a pair of cultists who are preparing for the rise of {{Eldritch Abomination}}s and Jago, from the book of the same name, who wants a Biblical apocalypse. Catriona is rather uncertain about getting help from people whose main problem with the end of the world is that it's the wrong kind.)
* ''Literature/VillainsByNecessity'' by Eve Forward centers around a group of evil characters trying to stop the world from being destroyed, by unleashing evil back into the land.
* [[spoiler:Stitchface]] gives this as his reason for helping the protagonists in ''Literature/TheHauntingOfAlaizabelCray.''
-->"I'm a monster, Miss Cray. But even monsters want to live."
* In ''Literature/ASongOfIceAndFire'', [[spoiler: [[HeroicBastard Jon Snow]]]] persuades the Night's Watch to make a ''very'' uneasy alliance with [[spoiler: wildlings, giants, King Stannis and Melisandre the Red Priestess/Sorceress]] in order to prevent [[GreaterScopeVillain the Others]] from bringing about TheEndOfTheWorldAsWeKnowIt and in his efforts to save everyone from the ZombieApocalypse. Some characters are sufficiently open-minded about the GreyAndGrayMorality of their world to recognize that their allies are not necessarily "evil" and the wildlings are people too, but the less even-handed ones who nonetheless accept the alliance do so because of this trope.
** Of course, [[spoiler: it comes to bite him in the ass when the older, more conservative members of Watch decide he's destroying it and try to kill him]].
* In ''[[Literature/MistbornTheOriginalTrilogy Mistborn]]'', [[spoiler:the [[EvilOverlord Lord Ruler]] is revealed after his death to have been holding an OmnicidalManiac god at bay. But since [[NiceJobBreakingItHero the heroes killed him]]...]]
* ''Literature/TheWheelOfTime'' teases this heavily in relations between the various bad guys, though it never actually spills into combat. [[TheDragon Ishamael]](who was literally a nihilist philosopher before the BigBad entered the world) does however spend some time mocking the other baddies for thinking that they're fighting for Evil when they're actually working towards Oblivion. This also works between the Forsaken and [[FromNobodyToNightmare Padan Fain]]. [[spoiler:While [[TheAntiGod the Dark One]]'s plans for the world are referenced several times in the final book, it actually wants to destroy creation and remake it InTheirOwnImage in some way, making him and his forces members of "Evil". Fain, over the course of the series, eventually places killing the Dark One and other acts of rampant mass murder on his list of things to do as Mashadar progressively takes over, placing him more in the category of "Oblivion".]]
* In ''Literature/{{Xenos}}'', the thieves' and assassins' guilds have occasionally aided the Church against servants of the Destroyer, the setting's {{Satan}} and GreaterScopeVillain. A leader of the thieves stated that he could ultimately confess his crimes, repent and even seek salvation, but collaborating with the Destroyer would damn his soul for eternity.
* [[EvilOverlord Emperor Jagang]] in ''Literature/TheSwordOfTruth'' opposes the Keeper of the Underworld on these grounds: The Keeper wants to unmake the world, whereas Jagang wants to [[TakeOverTheWorld take it over]]. His primary action against the Keeper is the MindRape and enslavement of the Keeper's servants, the Sisters of the Dark.
* ''Literature/PleaseDontTellMyParentsImASupervillain'': It's understood that if the Conquerors attack Earth, Spider will be on Earth's side. With Spider comes a large chunk of the US's supervillian population. The aforementioned Fridge Brillance is fully in effect here.
* In the later books of ''Literature/ShadowsOfTheApt'', this is how the conflict between [[GodSaveUsFromTheQueen Empress Seda]] and [[EldritchAbomination the Worm]] plays out; Seda wants her empire to conquer the world, while the Worm wants to kill most everyone and [[AssimilationPlot assimilate]] the rest (the fact that Seda feels a certain degree of [[TheAtoner guilt]] for popping the Worm out of its [[SealedEvilInACan can]] doesn't hurt either). [[spoiler: Of course, Seda's WorthyOpponent Che eventually reams her for the appalling nature of her plan to shut the Worm away again - with a BloodMagic ritual of genocidal proportions - and the monster is ultimately overcome with minimal input from the Empress]].
* While the ''Literature/NewJediOrder'' series of ''StarWars'' books doesn't have complete and total oblivion as its endgame (except in the frankly insane mind of the ManBehindTheMan) the Yuuzhan Vong devastate the galaxy so much, killing trillions, devastating hundreds of planets, and causing the extinction of multiple species, that the Imperial Remnant ends up fighting them as well in order to survive.
* This regularly happens in ''Literature/{{Worm}}'', where giant {{Kaiju}} with ruinous superpowers known as the Endbringers regularly emerge from the ocean, the center of the earth, and the upper atmosphere, select a target (usually heavily populated or otherwise vital) and proceed to do their absolute best to wipe it off the face of the planet. It's common, codified practice for superheroes and supervillains to join forces against them, because the Endbringers are doing a ''very'' good job of slowly wiping out humanity and the majority of supervillains simply ''aren't that evil.''
** Likewise, it justifies ThouShaltNotKill on both sides of the equation; the more powerful and troublesome a hero is for the villains, the more needed he tends to be against the giant monsters. One character describes the normal interactions between heroes and villains as "like a big game of cops and robbers."
** [[spoiler:In the final stages of the story, the Endbringers themselves join the fight against the final BigBad. While it's never made clear exactly ''why'' they decide to do so, the protagonists' successful attempt to recruit them included invoking this trope, among many other arguments.]]


[[folder:Live-Action TV]]
* In the ''Series/BuffyTheVampireSlayer'' episode "Becoming", Angelus is planning to perform a ritual that will bring about the end of the world. Spike sides with the heroes to stop him, and tells Buffy that under the big talk of wanting to end the world because they're evil, a lot of vampires like the Earth just as it is -- millions of people running around helpless like "Happy Meals with legs", and a comparative small handful of people who hunt and kill them. Angelus is just one of the few vampires insane, fanatical and (most importantly) dickish enough to actually ''do'' it, which Spike doesn't want.
* In ''Series/{{Charmed}}'', the Hollow can be restrained only by a YinYangBomb spell of good and evil.
* ''Series/DoctorWho'':
** In "The Pandorica Opens", [[spoiler:the Daleks and most of the Eleventh Doctor's RoguesGallery]] concluded an alliance to repair the cracks in the universe. However, this plan backfired spectacularly.
** Before that, the serial ''Logopolis'' did this with the Master.
** The Master against Rassilon, in ''The End of Time'' though it was for more personal reasons.
-->'''The Master:''' *fires electrical blast at Rassilon* "You did this to me! All of my life!" *fires second bolt* "You made me!" "1!" *fires 3rd bolt* "2!" *fires 4th bolt* "3!" *fires 5th bolt* "4!" *fires last bolt*
* ''Series/{{Heroes}} ''has Sylar. Head-splitting serial killer of specials by day, but would rather not have New York explode since it doesn't fit his agenda. [[spoiler:He comes around when he gets a vision of the future where it ''does'' fit his agenda.]]
* ''Series/{{Supernatural}}'':
** In season 5, [[MagnificentBastard Crowley]] -- a powerful, successful and very evil demon -- helps the brothers to combat Lucifer and the world-shattering threat of the Apocalypse, as he's quite enjoying himself.
** In season 7 Crowley does this again, as the Leviathans are organizing the wholesale slaughter of mankind, every other monster race besides themselves, and threaten to destroy the demons if they weren't occupied elsewhere. Over the course of the season he subtly aids the Winchesters to find a means to kill the Levi leader and destroy their army.
** In season 11, Lucifer, Crowley, all the other demons, and [[WickedWitch Rowena]] all [[EnemyMine join forces]] with the Winchesters and the angels in order to prevent [[TheAntiGod the Darkness]] from [[OmnicidalManiac destroying all of creation]], since obviously that would destroy them, too.
* In season 8 of ''Series/StargateSG1'', Ba'al, the last of the Goa'uld System Lords, joins forces with the SGC to keep the [[GreyGoo Replicators]] from eating the galaxy. Also later helps out against the Ori. The team gets used to him being willing to do this, but never forgets that he ''is'' the bad guy (which he ''does'' prove now and again. [[spoiler: In fact, in the end, he becomes the BigBad of the final SG-1 movie]], having outlived Anubis, the Replicators, and the Ori mostly by being very cunning.
* Cyrus Crabbe in the ''Literature/{{Dinotopia}}'' TV movie joins with the Scott brothers to save the island from the rampaging pteranodons, even though he hates the Dinotopian way of life and wants to leave.
--> '''Crabbe:''' Don't you get it? I'm trying to save this hell of a place. Not 'cause I like it, but 'cause I'm trying to save me own skin.

* Probably the reason why Set, the fratricidal god of chaos in Myth/EgyptianMythology, helps Ra to slay the serpent Apep. After all there would be no world worth terrorizing if the sun and heavens were destroyed.

[[folder:Tabletop Games]]
* This trope is the main thing that distinguishes the "Good Guys" of ''TabletopGame/{{Warhammer 40000}}'', such as the brutal, LawfulEvil [[TheEmpire Imperium]], the [[ManipulativeBastard ultra-manipulative Eldar]], and the vengeful, imperialistic Necrons from the "Bad Guys", the [[OmnicidalManiac Omnicidal]] legions of Chaos and the perpetually hungry Tyranids. The Orks, on the other (third?) hand, [[BloodKnight just like fighting.]]
** From 6th Edition onwards, under the Alliance rules, just about everyone except Chaos and the Tyranids can end up in an EnemyMine. Even the forces of Chaos don't want the Tyranids to win, since that would deprive the Dark Gods of their power.
** And in earlier editions, Chaos vs. Necrons. Madmen serving the gods of murder, rape, disease and mutation vs. robots that rid the universe of life down to the bacterial level (which would cause the Chaos gods to die out).
* ''TabletopGame/DungeonsAndDragons''
** Hilariously inverted in ''TabletopGame/{{Planescape}}''. Shiva peacefully sits in the big vortex on Negative Energy Plane and presumably (it's not like even planars can be trusted in such matters) contemplates his role in the destruction of the Multiverse -- when its time will come, that is. Every once in a while someone stumbles on the same bright idea: "Hey, maybe this guy does requests?" and visits him to check. As far as anyone knows, these supplicants just go in and never return.
*** From the same setting, there's the [[EvilVersusEvil Blood]] [[ForeverWar War]]. While how much this trope factors into the overall motivations behind it is debateable, the result boils down to this. The LawfulEvil devils eternally battle the ChaoticEvil demons for reasons long since forgotten by anyone, but if the demons ever won, they would eventually overtake the whole of the multiverse through weight of sheer numbers and consume everything. Of course, if the devils ever won they'd almost certainly conquer the multiverse and rule it with an iron fist, so neither side winning is in everyone else's best interest.
** In "The Plane Below" for 4th Edition, it goes into the psychology of [[ChaoticEvil Archons]]. Created by the Primordials to wage war on the non-elemental creatures that served the Gods, they still exist and still regularly attack and kill non-elementals. However, they need battle and slaughter like humans need shelter and companionship, so they stop just short of pure genocidal mayhem. If they ever actually destroyed every other creature, then they wouldn't have anything to fight anymore.
** On a larger scale, the gods verse the Primordials themselves. The Primordials are ancient beings even more powerful than the gods who created the universe, but if they had their way, it wouldn't exist long enough for life to begin as they constantly destroyed and remade it (think of a kid who smashes his sandcastle as soon as he's finished with it, only to immediately start again, ad nauseam). The Primordials aren't all inherently evil, but they are all inherently destructive; compared to the gods, who even the most evil and chaotic among them prefer a somewhat stable universe to influence; this leads to both good and evil gods uniting to overthrow and imprison the Primordials, and makes them all loathe to ever fight each other, lest the Primordials rise again.
* ''TabletopGame/{{Pathfinder}}'' has the LawfulEvil devils and ChaoticEvil demons; the former want to crush the universe under their heel and the latter want to corrupt and destroy everything they can, but neither really want to kill every living thing; that's the NeutralEvil daemons' goal. They all tend to clash together thanks to their rather mutually exclusive goals.
** Also, in the lore, the LawfulEvil god Asmodeus (who is modeled largely on {{Satan}}) aided the good gods against Rovagug, the ChaoticEvil god of destruction. When Rovagug was imprisoned by the other gods, it was Asmodeus who made the lock.
* This is true in ''TabletopGame/LegendOfTheFiveRings''. The Sleeping Void is seen as not being truly evil, because it simply wants to end everything, while the forces of the Shadowlands ARE evil, and want to conquer the world.
* ''TabletopGame/InNomine'', by Steve Jackson Games, has a few instances where Heaven and Hell have come together to destroy a rogue Demon Prince who attempted global devastation. Most notorious was Legion, the second Prince of Corruption, but the Prince of Pestilence, who kicked off the Black Plague, had to be taken down as well.
* The Seers of the Throne from ''TabletopGame/MageTheAwakening'' have "maintain [[EldritchAbomination the Abyss]]" as one of their commandments. "''Maintain''" is the key word in that phrase -- the Seers keep humanity fractious and miserable to prevent them from Awakening. They do not take kindly to people like the [[OmnicidalManiac Scelesti]] actively [[TownWithADarkSecret serving]] the Abyss, and a Scelestus is one of the few things the Seers and the Pentacle Orders will [[EnemyMine work together against.]]
** There's also a slight inversion when it comes to the Lower Depths, which count the Inferno amongst their number. In one fiction piece, a Scelestus argues to his interrogator that at least the Abyss just wants to annihilate reality; the dwellers of the Inferno want to make it bleed. He's right: the Lower Depths are natural allies against the Abyss as well, since they are worlds that are devoid of one of the ten Arcana and they want to attain that "missing piece of Reality" for themselves. Therefore, they oppose the Abyss's desires to destroy reality.
* Similarly, in the ''TabletopGame/OldWorldOfDarkness's'' ''TabletopGame/MageTheAscension'', the Technocracy distrusts the Traditions but recognizes that the [[OmnicidalManiac Nephandi]] and [[RealityWarper Marauders]] are far worse. And vice versa - while Tradition mages see the Technocracy as opressors trying (for the most part, successfully) to enslave humanity, they will [[WeAreStrugglingTogether grudgingly]] work with them against the Nephandi and [[WalkingDisasterArea Marauders]].
* In ''TabletopGame/SirenTheDrowning'', this is the reason Sirens from the [[StrawNihilist Current of Acheron]] are hated not only by the Celestial Currents, but also by their peers from the other Abyssal Currents: their goal is to ''fasten'' [[TheEndOfTheWorldAsWeKnowIt the Deluge]] because [[SuicidalCosmicTemperTantrum they honestly think the world is crappy enough that it deserves to be destroyed]]. Aside from nobody beside them being insane enough to want this, the other Abyssal Currents, as evil as they are, still ''need'' the world saved for their own agenda.
* In ''TabletopGame/{{Exalted}}'', we have the Neverborn, the tormented, undead remnants of the murdered Primordials; the Deathlords, ancient and powerful ghosts sworn into their service; and the Abyssal Exalted they corrupted from stolen Solar shards, all of whom want to drop Creation into the Well of Oblivion. Absolutely no one else wants this to happen, including the other "bad guy" factions, such as TheFairFolk and the Infernal Exalted. Even the Ebon Dragon, the personification of evil, cruelty, treachery, and general assholery, opposes them, if only because nonexistence would put a severe crimp in his plans to bring about eternal suffering and torment. [[note]]Note that the Dragon inverts the usual EvilerThanThou arrangement-- one supplement specifically notes that, horrible and nihilistic though it would be, the utter extinguishing of all Creation would be better for everyone than letting the Ebon Dragon remake it in his image.[[/note]]
** The aforementioned [[TheFairFolk Fair Folk]] have their own variation on the theme - some of them want to unmake the world back into Pure Chaos in which they will continue to play their games for eternity, while the others like the tasty mortal souls too much to just kill them all at once. (They both wouldn't like the Oblivion of the Neverborn of course.)
* In ''TabletopGame/MagicTheGathering'', even the most selfish planeswalkers (godlike multiverse-travelling mages) sometimes help the good guys to thwart something even more horrible.
** In the ''Zendikar'' and ''Innistrad'' storylines, the planeswalker Sorin Markov is not exactly a nice guy, being an arrogant, hedonistic vampire who goes around eating people and so forth. But even he had the decency to go out of his way (even risked his life?) to prevent {{Eldritch Abomination}}s, demons, and other vampires from depopulating entire planes of all intelligent life.
** In the ''Time Spiral'' storyline, Nicol Bolas, an Elder Dragon planeswalker and one of the oldest and most evil characters in the game, actually offered some help in preventing the time rifts from destroying the whole multiverse. Not that he stooped to sacrificing his own planeswalker spark to do so; [[spoiler:he killed Leshrac and used his instead]]. Then again, Nicol Bolas is also the bastard who mucked up Sorin's plans and let the plane-eating Eldrazi loose again, for no particularly discernible reason. What a jerk.
** The multiplayer format ''Archenemy'' has players take the role of planeswalkers forced into alliance against another planeswalker who is about to set in motion some world-destroying magic, represented by the Scheme deck. Archenemy deck names include "[[ZombieApocalypse Bring About the Undead Apocalypse]]" "[[GaiasVengeance Trample Civilization Underfoot]]", and "[[DoomsdayDevice Assemble the Doomsday Machine]]".
* TabletopGame/{{Nobilis}} presents us with the Imperators and the Excrucians. The former include [[OurAngelsAreDifferent Angels]], [[OurDemonsAreDifferent Demons]], [[KrakenAndLeviathan Aaron's]] [[OurDragonsAreDifferent Serpents]], [[MadGod Wildlords]], Lords of the [[LightIsNotGood Light]] and [[DarkIsNotEvil Dark]], and a smattering of [[AllMythsAreTrue other god-like entities]], all of whom tend to follow BlueAndOrangeMorality. The Nobles, their semidivine servants (which includes the {{Player Character}}s), are human enough that they can be nicer than their bosses, but also human enough that their malice can arise from genuine sadism rather than disinterest or ignorance. Not exactly a nice bunch, but at least they're a better group than the Excrucians, who want to unmake reality to the point of it never having existed in the first place. They've already succeeded in part, but the extent of that success is by nature unknown and unknowable.
* ''13th Age'' has demons versus, well, everyone. Even the ChaoticEvil Diabolist, who messes around with summoned demons, is more interested in keeping them [[SealedEvilInACan trapped by the Great Gold Wyrm]] than she is in letting them loose, because that way she's the one with the power. The LawfulEvil Crusader, meanwhile, has dedicated his entire career to kicking demons around.

[[folder:Video Games]]
* Star Wolf, in ''VideoGame/StarFoxAssault'', teams up with Star Fox to take on Pigma, and later the Aparoids, with this line of logic. Wolf and his crew may be much more morally ambiguous about the jobs they take than Fox, but they're not about to watch the entire galaxy get turned into a HiveMind.
* ''VideoGame/TheWorldEndsWithYou'': [[spoiler:The BigBad, Megumi Kitaniji, is actually in a game with the Composer to decide the fate of Shibuya. Neku happens to be unknowingly playing for the Destroy Shibuya team.]]
* In ''VideoGame/{{Sacrifice}}'', there's a prophecy that one of the gods is going to bring about the end of the world, and suspicion immediately falls on Charnel, the god of death and suffering. He denies it, pointing out that if the world ends, there will be no people left to suffer and die, so it's in his interest to keep the world as it is.
* Bowser from ''Franchise/SuperMarioBros'' does this sometimes, when he doesn't accidentally destroy the universe himself. Most prominently used in ''VideoGame/SuperPaperMario'' where he's actually playable and fulfills a role in the prophetic group of heroes. Bowser also still is the ''King'' Koopa, and if something threatens his subjects or his reign, he'll try to stop it. Pointed out further in ''VideoGame/MarioAndLuigiBowsersInsideStory''; Dark Bowser wants to destroy the kingdom, but Bowser will have none of that, otherwise there won't be a kingdom for him to rule.
-->'''Dark Bowser''': Still here? Has the dark power not crushed your puny hopes? Soon this kingdom will vanish along with all who dwell within. And you, too, will sleep eternally in the dark power's embrace.
-->'''Bowser''': GWAHAHA! Great dark hurricane! Seriously, perfect backdrop for an awesome final battle! You really sweat the details! Listen up! You're saying the kingdom will vanish? NOT TODAY! THIS KINGDOM IS ALL MINE! SO YOU VANISH!
* Similarly, most of the mainline 3D ''Franchise/SonicTheHedgehog'' games generally end up with this conflict as justification for Dr. Eggman fighting alongside the heroes against some ultimate evil in the True Ending, usually one that he [[EvilIsNotAToy released himself]]. It started in ''VideoGame/SonicAdventure2'', and the trend wasn't really bucked until ''VideoGame/SonicUnleashed'' (where Eggman really couldn't care ''less'' what Dark Gaia was up to, as long as he could harness the thing's power for his own) and ''VideoGame/SonicColors'' (where Eggman ''is'' the ultimate BigBad). ''VideoGame/SonicGenerations'' plays with it, as Time Eater captures Eggman no less than twice throughout the game, seemingly against both parties. [[spoiler:Except that both Classic and Modern Eggman ''control'' Time Eater; these were actually elaborate escape plans to throw Sonic off their trail.]]
** In the spinoff game ''VideoGame/ShadowTheHedgehog'', Dr. Eggman still wants to conquer the world to create the Eggman Empire, and ends up facing off against Black Doom in the process, due to the fact that he [[spoiler:wants to turn all of humanity into a food ranch.]] Depending on your choices, Shadow himself can qualify siding against either Eggman or Black Doom.
* Inverted in ''VideoGame/MastermindWorldConqueror'': [[spoiler: the Mastermind apparently believes that conquering the Earth and blowing it up are in fact the same thing (he looked it up)]].
* The "Earth Defenders" (IE: Godzilla, Mothra, Rodan, Anguirus, Baragon, King Seesar, and Varan) in ''VideoGame/GodzillaUnleashed'' fall under this. While most of them couldn't care less about what happens to ''humanity'' in particular, they are more than willing to protect the earth (hence their title) from any threat that wants to destroy it.
* The VillainTeamUp in ''VideoGame/DissidiaFinalFantasy'' begins to fracture along these lines, dividing the group between the characters who want to rule the world, those that just [[OmnicidalManiac want to see it go boom]], and those who don't care one way or the other. And that's not even including the ones that [[GoodAllAlong aren't really evil to begin with]].
** From the main series, [[EvilOverlord Emperor Gestahl]] of ''VideoGame/FinalFantasyVI'' objects to Kefka assuming supreme magical power because then there wouldn't be much of a world left to rule afterwards.
** Similarly, the Shinra Corporation in ''VideoGame/FinalFantasyVII'' wants to stop Sephiroth just as much as the protagonists do. Too bad their incompatible methods mean teaming up isn't an option. Especially since Shinra's plan to thwart Sephiroth wouldn't actually have worked even if the heroes ''hadn't'' interfered.
** In ''VideoGame/FinalFantasyXIV'' 1.0, [[ReasonableAuthorityFigure Gaius van Baelsar]] subtly assists the player in their efforts against his countryman [[BrainwashedAndCrazy Nael van Darnus]] to halt [[ColonyDrop Project Meteor]], preferring to conquer Eorzea rather than destroy it.
* ''Franchise/{{Halo}}'' has an odd example of what could be considered ''oblivion vs oblivion''. The Gravemind wants to consume all life in the galaxy, leaving nothing but a pestilent mass of Flood, while the Prophet of Truth wants to activate the Halo rings and thus wipe out all organic life in the galaxy (under the mistaken impression that it will [[AGodAmI ascend him and his followers to a higher plane of existence]], [[spoiler:which in reality is an ''incredibly'' determined effort to prevent the revelation of the fact that the Covenant's entire religion was a lie]]). If you factor in 343 Guilty Spark (who has the same goal as Truth, but [[ItsTheOnlyWayToBeSure for wholly different reasons]]), then you have an unprecedented 3-way war in which ''each side'' wants to destroy the galaxy.
** In ''VideoGame/Halo3'', this results in [[spoiler:a truce between Humanity, the Covenant Separatists, 343 Guilty Spark, the Ark's army of Sentinels, and for a very brief period of time, ''the Flood'', all just to stop Truth from firing the Halo Array. The Flood go back to fighting everyone and everything immediately after Truth is killed, and Spark goes rampant and ends up killed by the Chief, with the Sentinels turning hostile, too]].
* Kingpin in ''VideoGame/SpiderManWebOfShadows'', due to an outbreak of symbiotes.
* ''Franchise/MassEffect''
** In the first-day DLC of ''VideoGame/MassEffect3'', "From Ashes", it's revealed that [[spoiler:the Protheans were a highly militarist [[TheEmpire Empire]] that considered themselves the galaxy's MasterRace, and went around eradicating and enslaving or every race they could find]], making their struggle against the [[EldritchAbomination Reapers]] a case of this trope and AbusivePrecursors versus AbusivePrecursors rather than [[spoiler:BenevolentPrecursors versus AbusivePrecursors as originally thought]].
** Cerberus in ''VideoGame/MassEffect2'': they're a human supremacist organization that, just this once, isn't going to complain about working with alien allies. Why? If the Reapers wipe out the galaxy, that's obviously not in humanity's best interests, and the Illusive Man is smart enough to know that humanity cannot defeat the Reapers on its own. [[spoiler:Then they go ahead and get [[MindControl indoctrinated]] in ''Mass Effect 3'' and wind up fighting more or less on the Reapers' side.]]
** In ''VideoGame/MassEffect3'', the crime lord Aria T'Loak is willing to cooperate and send a massive fleet of mercenaries and criminals to aid in the fight against the Reapers. After all, can't live a profitable life of ruling the WretchedHive of Omega if the Reapers kill everyone, right?
* ''[[VideoGame/CityOfHeroes City of Villains]]'' has a few storylines where you, an aspiring supervillain, get to save the world. This is also the justification for teaming up with heroes in the end-game "incarnate" content.
** There's also a badge for heroes who do a specific mission called "Saved the world". If you become a villain (via the morality system), the name of the badge changes to "Saved the world... for later" The flavor text explicitly says that the reason you foiled the evil plot is because it wasn't ''your'' evil plot.
* ''VideoGame/DCUniverseOnline'' shows the obvious problem for villains having this attitude: Lex has to time-travel to find the Justice League to help him save the world. Because previously, he ''won'' against the League. So if you don't want oblivion, villains, maybe you shouldn't try to kill the heroes at all.
* In ''VideoGame/WildArms1'', the Demons want to TakeOverTheWorld. They thought their [[TheMaker Mother Of Monsters]] wanted to do so too; but she wants to destroy everything instead. So they engage in the UriahGambit and let the heroes kill the Mother.
* In ''VideoGame/StarWarsTheOldRepublic'', one of the Sith Emperor's top enforcers joins with the Hero of Tython (the Jedi Knight PlayerCharacter) to stop the Emperor from [[OmnicidalManiac consuming all life in the galaxy]]. In the games's backstory, he had worked with [[VideoGame/KnightsOfTheOldRepublic Revan and the Jedi Exile]] with the same goal, only to turn on them when he had a vision revealing the Hero of Tython as the one who would stop the Emperor – that betrayal earned him his position and the long life that ensured he would still be around to later work with the Hero.
** In the ''Shadow of Revan'' expansion, Darth Marr forms a temporary alliance with Satele Shan to deal with Revan since his plan to awaken the Sith Emperor will cause the latter to consume the entire galaxy. [[spoiler:Come ''Fallen Empire,'' that alliance is more or less permanent, as both the Republic and Empire are under siege by Valkorian (yet another guise of the former Sith Emperor). Marr is killed, but later seen as a Force Ghost accompanying Satele.]]
** The TieInNovel ''Literature/StarWarsFatalAlliance'' has a third, in which the Jedi and the Sith must combine forces to deal with an army of robots who, given time, will strip-mine the entire galaxy and wipe out all its inhabitants. Darth Chratis, after all, will have a hard time being promoted to the Dark Council if Dromund Kaas is a wasteland covered in mining scars and dead bodies.
* In ''VideoGame/KnightsOfTheOldRepublicIITheSithLords'', even a Dark Side Exile will end up throwing down with Darth Nihilus, because Nihilus's [[HorrorHunger intrinsic need to devour the life energy of Force-sensitives]] is not only bad for you, but also bad for entire planets and will, at best, end in the Exile being the only person left in a galaxy of barren, depopulated rocks.
* In ''VideoGame/GodOfWar'', ''you'' are playing for the oblivion side. Kratos destroys another part of the world with each god he slays in GOWIII. The gods are fighting to preserve the world. By the end of the game civilization, the order of nature including the afterlife, and nearly all if not all of the entire human race is gone. Even the "evilness" of the gods is questionable. They could be [[JerkAssGods major jerks]] to humans, but only became truly evil after being infected with the evils from Pandora's Box.
* The Guardians in ''VideoGame/{{OFF}}'' may be huge {{Jerkass}}es and {{Bad Boss}}es with little regard for the Elsens they rule over, but in they end they end up fighting to try and save their respective Zones from [[spoiler: the Batter purifying them, which would erase everything.]]
* In ''VideoGame/Portal2'', this is the motivation of [=GLaDOS=] for helping Chell stop Wheatley; his incompetence will inevitably result in the destruction of the Aperture Science facility.
* The primary villain of ''VideoGame/ArcanumOfSteamworksAndMagickObscura'', [[spoiler:Kerghan the Terrible]], is a necromancer who has seen the [[TheNothingAfterDeath place where souls go to die]]. He decided it was much better than the mortal and spiritual planes, which were both full of suffering - and elected to share this eternal peace with the world. The player character can recruit many companions of varying - and often enough questionable - morality over the course of the game, only one of whom will actually side with [[spoiler:Kerghan]] if the player chooses to fight him.
* In ''VideoGame/ThatWhichSleeps'', TheChosenOne doesn't ''have'' to be good-aligned. The only prerequisite is that they're willing to fight [[EldritchAbomination the Old One]], and since said Old One would destroy or otherwise utterly reshape the world, even an evil ChosenOne has every reason to follow Fate's path.
* In ''VideoGame/YuGiOhTheDuelistsOfTheRoses'', if you choose the evil side, when the BigBad is summoned by you and Kaiba, you have to turn on him because he wants to destroy the world.
* ''VideoGame/FallenLondon'': Devils are... well, devils, but even THEY won't take a soul that has been corrupted by the all-consuming devourer Mr. Eaten, a being whose agenda is "give me everything so that I may give you ''nothing''". If they catch you, they will strip you of all your belongings so that your meaningless self-sacrifice won't give the enemy enough new material to corrupt other souls with.
* The two major villain groups in ''VideoGame/{{Warcraft}}'' and ''VideoGame/WorldOfWarcraft'', the Burning Legion and the Old Gods, play with this. The Burning Legion wants to burn Azeroth, along with all worlds, while the Old Gods are fighting to break out of their prisons and rule Azeroth like they did ages ago; this has in the past prompted both factions to either fight or help the other faction, depending on what would serve their own goals. For example the Old Gods meddled in the Legion's invasion during the War of the Ancients, subtly helping things progress but intending to hijack the payoff at the last moment. But in the big picture, [[spoiler:the roles are reversed. The Old Gods want to be free to corrupt the titan within Azeroth, which they will use to consume all matter and energy in the universe and turn it all to Void, as their masters the void lords created them to do. The Legion was founded when its master Sargeras learned of this plan, and decided that evil acts of physical destruction would be preferable to total universal oblivion.]]
* ''VideoGame/Injustice2'': This is why most supervillains end up fighting against Brainiac in one way or the other. Since he is a OmnicidalManiac who harvests all planets he invades from all valuable content for his collection and destroys the rest, he represents a threat to everyone including [[FallenHero the Regime]], who promptly side with their former comrades who are still good, and Grodd's Society, a supervillain group assembled to TakeOverTheWorld. Though their case is a little complicated, since they initially assist in Brainiac's invasion in the Story Mode, when its revealed he wants to destroy Earth they disband rather than help the heroes fight him. They do end up fighting him in their own Arcade Mode just like everyone else.
* ''VideoGame/TheNewOrderLastDaysofEurope'', an Axis victory mod to be released for ''VideoGame/HeartsOfIron IV'', has the potential conflict between Himmler (controlling the SS-Ordenstaat Burgundy) on one side and Bormann or Heydrich on the other, with an argument for Speer at least in ''some'' paths[[note]]there is one other potential leader of Germany mentioned, but Göring's desire to solve Germany's issues by making war on the world dovetails with Himmler's goal even if Göring wouldn't see it that way so it is unknown how likely they are to end up fighting[[/note]]: Himmler has managed to ''radicalize'', believing that National Socialism was too compassionate and peaceful and from that coming to desire and scheme to cause a nuclear war to destroy humanity as it is and allow the Aryan race to rise from the ashes and recolonize the world. Bormann is the candidate of the status-quo being just fine in Nazi Germany, which is likely to draw the two into conflict if Bormann succeeds Hitler, and Heydrich has been acting as Himmler's proxy leader in the German SS, but if he becomes Führer can break with Himmler and usurp control of the SS with the goal of ''conquering'' the world. The reason Speer is a bit arguable is that he is the least evil candidate to succeeding Hitler, though his more moderate paths of reforming Germany and its alliance into a more coherent, sane fascist and less outright tin-pot colonialist system would still look evil [[ALighterShadeOfBlack if the comparison wasn't Nazi Germany]], and if he instead of just reforming the alliance successfully goes for creating the [[FictionalUnitedNations Koalition der Nationen]] Speer may cross over towards gray, but the broad, internationally mandated anti-Burgundy coalition it can allow is likely to include fairly nasty regimes (such as the Empire of Japan).
* In ‘’VideoGame/LegoMarvelSuperheroes’’ once they find out that Loki’s plot is to manipulate [[PlanetEater Galactus]] into destroying Earth, other villains like Green Goblin, Magneto and even Doctor Doom help the heroes to stop him.

[[folder:Visual Novels]]
* ''VisualNovel/FateStayNight'''s third and final route, ''Heaven's Feel'', comes down to this for the two major villains, but it's a little more complicated on the Oblivion side in a way that actually makes it more sympathetic than Evil. [[spoiler: [[TragicVillain Kotomine Kirei]]]] is on the side of Oblivion, but unlike most examples, destroying everyone and everything isn't his end goal. It's just a foreseeable consequence of [[spoiler: allowing a creature of "ultimate evil" to be born]]. His true goal is answering the question of whether anything can truly be "evil" if all it does is act according to its nature.
* In ''VisualNovel/ZeroTimeDilemma'' [[spoiler: Second Zero reveals that [[ReligionOfEvil Free The Soul]] released [[ThePlague Radical-6]] to stop a [[GreaterScopeVillain Religious fanatic]] from sparking a nuclear war which would've destroyed the world. Since Radical-6 would've killed about 75% of the world's population there's pretty good chance that the fanatic would be among them.]]


* ''Webcomic/TheOrderOfTheStick'':
** In [[http://www.giantitp.com/comics/oots0442.html In this strip]], EvilOverlord Xykon explains why he won't let the world be destroyed by the [[EldritchAbomination Snarl]]:
--->'''Xykon:''' I like the world. Some of my best evilness took place here. I wouldn't mind ruling it, in fact. I'm certainly not about to destroy it unless I get really, '''really''' bored.
** His Dragon, Redcloak, walks the line. The plan is to give his god, the Dark One, the ability to unleash the Snarl at will to threaten the other gods into giving goblins a better lot in life. Though if things go south and the Snarl winds up destroying the world (again), the Dark One will get a say in how the next world is created, ensuring that the goblins of that world get a better deal. So whether Evil or Oblivion wins, [[XanatosGambit so does the Dark One]].
** Later, Tarquin promises to help Elan, despite being on opposite ends of the alignment scale, precisely because he knows Elan is on a quest to save the world and, as the power behind the throne of a good sized kingdom, he has a vested interest in seeing that happen.
** The deity Loki opposes his [[AntagonisticOffspring daughter]] Hel's plot to force a vote to end the world, and worked for some time with his [[FriendlyEnemy friend/enemy]] Thor in order to limit her influence. Loki's stated rationale for not wanting to vote to end the world is that he finds the world's inhabitants entertaining and wishes to give them a chance to contain the Snarl before jumping the gun.
--->'''Hel:''' I am most looking forward to taking the soul of Thor's high priestess. My dear puppy Garm is in dire need of a new chew toy, after all.\\
'''Loki:''' Humiliating Thor is not enough of a reason to do this, Hel. It's a pretty funny reason, sure, but not ''enough'' of one.
** Lampshaded when [[spoiler: Vampire Durkon]] gives his reasons for supporting Hel as "I'm evil now". Roy points out that this isn't a reason.
--->'''Roy:''' Xykon is an Evil lich. Tarquin's an Evil human. Neither one of them wants to destroy the world. Heck, Belkar is an Evil halfling and he's like 70% toward wanting to save it.
** The party has been joined by [[spoiler: [[TheBusCameBack Hilgya Firehelm]]]], priestess of Loki, working to further her god's wishes of not ending the world.
* ''Webcomic/KidRadd'' has three villains. [[spoiler:Crystal wants to conquer the world, in revenge for the wrongs she has endured. GI Guy wants to destroy the world, out of despair after two failed utopias. The Seer wants to conquer the world then destroy it before moving to the next planet and repeat the process, because that's what a ComputerVirus does (with a dose of sadism too).]] Their actions indirectly serve or complicate each other's plans.
* ''{{Webcomic/Goblins}}'': During the Maze of Many arc (in which thousands of alternate versions of Minmax, Forgath, and Kin are competing to complete the dungeon crawl), a Psionic version of Minmax is attempting to revert the extradimensional maze to Oblivion. He planned to alter the rules of logic and prove that [[DivideByZero One equals Zero]], proving that nothing in the maze had ever existed. Naturally, anyone in the Maze at that point would revert to Oblivion as well. While the protagonists are good-aligned, most of the alternate versions of Minmax, Forgarth, and Kin are evil, and when they find out about Psionic Minmax's plans to preemptively erase them from existence, they immediately stop fighting each other and ZergRush him.
* ''Webcomic/TrueVillains'' takes a turn in this direction when the squad of unrepentant {{Villain Protagonist}}s faces the forces of [[spoiler:Malanor, the First Vampire]], who seeks to wipe out all life on the continent. The extremity of the situation even forces [[spoiler:Sebastian's resolutely Good and thoroughly estranged sister Alyssa]] into an EnemyMine alliance.

[[folder:Web Original]]
* ''WebVideo/AtopTheFourthWall'' has Lord Vyce and The Entity. The former claims he started as a genuine hero, merely warning alternate realities of the danger they were in, but became a ruthless MultiversalConqueror after [[NecessarilyEvil everything else failed]]. Also, [[WebVideo/TheSpoonyExperiment Doctor Insano]] is not only willing to call a truce, but even ignore Linkara stealing his prized deathbot in order to defend the stability of hypertime.
* Happens in the backstory of ''AudioPlay/RefletsDAcide'' when the [[OurDemonsAreDifferent Demon Lord]] Bélial shew up for the first time. His arrival resulted in EvilOverlord Alkor joining force with [[TheMagocracy King Mage]] [[BigGood Maender]], presumably for this reason. Notably, it seems the alliance actually survives after Belial was defeated.
* In the Sonic/Mega Man crossover ''Sonic's Quest For Power'', Sonic uses this quite succinctly to explain [[EnemyMine why he's working with Eggman]]:
-->'''Sonic:''' Eggman wants WorldDomination, Sigma wants world ''destruction''.
* In ''WebVideo/YuGiOhTheAbridgedSeries'', in the season 2 finale, [[EvilVersusEvil Yami Marik/Melvin duels Yami Bakura]] much like in the original. However in the abridged version, Bakura makes it clear he's fighting to keep the series from being cancelled, which is Melvin's end goal. Bakura's reasons are that he has yet to receive the screen time he was promised in his contract.

[[folder:Western Animation]]
* Dr. Arkeville from the ''[[WesternAnimation/TheTransformers Transformers]]'' multi-parter "The Ultimate Doom" helped the Decepticons with a mind-control plot, in exchange for world domination, until he found out the ultimate goal would leave the earth a lifeless husk.
-->'''Arkeville:''' I will be ruler of a dead world!!\\
'''Megatron:''' A simple problem, Doctor, for such a brilliant mind.
** In later incarnations of the [[Franchise/{{Transformers}} metaseries]], Megatron (or, for more unhinged Megatrons, the more sane evil Decepticons) will at least try to team up with the Autobots to combat Unicron for "if he eats it I can't rule" reasons. It almost never works out for Megatron and he ends up doing Unicron's bidding semi-against his will, but its the thought that counts.
*** He does rather better at resisting Unicron's control in ''WesternAnimation/TransformersPrime'', and directly aids the Autobots in defeating him so that "this time, there ''will'' be a planet left for me to rule!"
** Not so much evil as ''selfish'' versus oblivion: When Megatron warps Cybertron into Earth's near orbit to have their gravity field tear earth apart and generate energon, Wheeljack asks the Dinobots for help. They refuse until Wheeljack points out that earth is about to be destroyed ''while they're still on it.''
* In ''WesternAnimation/SpiderManTheAnimatedSeries'' the [[DiabolicalMastermind Kingpin]] places his considerable resources at Spider-Man's disposal when the Spot's technology threatens to destroy the planet.
-->'''Kingpin:''' There is no profit to be made in the destruction of the planet. It is very bad for business.
* In the ''[[WesternAnimation/JusticeLeague Justice League Unlimited]]'' finale, ComicBook/LexLuthor's Legion of Doom ''teams up with the League'' to [[spoiler:stop the reborn Darkseid from devastating Earth]]. Most amazingly and hilariously summed up by ''Atomic Skull'' of all people:
--> '''Superman:''' Oh COME ON! It's Lex Flipping Luthor! Why should we trust him?!
--> '''Atomic Skull:''' Hey, it's our world too!
* ''WesternAnimation/ThePowerpuffGirls'': When an alien CaptainErsatz of Galactus wants to destroy the world, Mojo Jojo defeats him [[CurbStompBattle single handedly]]. He angrily loses it when the alien openly uses his own plans to great effect, and ultimately destroys the threat to prove he is the most evil there is. [[NiceJobFixingItVillain Of course, the city is more estatic that Mojo Jojo defeated the alien than afraid of him.]]
* The finale of ''WesternAnimation/DannyPhantom'' has all the recurring ghost villains help Danny save the world from a meteor. Not entirely altruistic, though: the Ghost Zone is tied to the Earth, so the ghosts will share Earth's fate should the meteor hit.
* Chase Young, Wuya, and Jack Spicer in ''WesternAnimation/XiaolinShowdown'', prompting them to [[EnemyMine join forces]] with the Xiaolin Warriors on a couple of occasions. Here it's definitely of the "if the world is destroyed then I can't rule it" variety.
* In ''WesternAnimation/TeenTitans'' season 4, [[SmugSnake Slade]] helps the Titans take down [[GodOfEvil Trigon]] partially for this reason.... [[ItsAllAboutMe but mostly to get back at Trigon for backstabbing him]].
* When [[spoiler: Ch’rell begins erasing the TMNT multiverse]] in ''WesternAnimation/TurtlesForever'', several villains turn against him. For a moment, it looks like it will culminate in a fight between him and [[spoiler: Krang]], [[AttackOfThe50FootWhatever as giants]], but the latter [[CurbStompBattle is quickly defeated]].
* In ''WesternAnimation/DarkwingDuck'', Megavolt teams up with the gang after accidentally "galvanizing" Negaduck and turning him into a PersonOfMassDestruction. They ask why he'd help them, and he says that if Negaduck destroys St. Canard, there'll be nothing left to rob.
* Played straight in ''WesternAnimation/JusticeLeagueCrisisOnTwoEarths'': When the Crime Syndicate learns that one of their members plans to destroy all of creation, [[SuperSpeed Johnny Quick]] instantly volunteers to help stop it, saying that his world is in jeopardy too.
* The season 3 SeriesFauxnale of ''WesternAnimation/JohnnyTest'' has Johnny enter an EnemyMine situation with several of his nemeses to stop [[OmnicidalManiac Dark Vegan]] from destroying all life on Earth, arguing that they want to take over the world and can't do that if there's no world.
* The first season of ''WesternAnimation/{{Ninjago}}'' has the ninja teaming up with BigBad Lord Garmadon to stop an omnicidal EldritchAbomination that would otherwise consume all of the land.
* ''WesternAnimation/TheBatman'' episode "The Joining" has the inmates of Arkham Asylum and the G.C.P.D. fighting off an AlienInvasion side-by-side. The Joker even makes a direct reference to the trope after watching Mr. Freeze and Commissioner Gordon covering each other.
* [[MagnificentBastard Xanatos]] sometimes takes the "evil" side against [[WoobieDestroyerOfWorlds Demona]] standing in for "oblivion" in ''WesternAnimation/{{Gargoyles}}''. Now, Demona doesn't want to destroy ''everything'', but she ''does'' want to wipe out the human race (which, as far as those of us who belong to the human race are concerned, amounts more-or-less to the same thing), something the largely amoral Xanatos's sense of self-interest and self-preservation is far too strong to allow[[note]] Xanatos wants money, power, and immortality. As of the show proper, he has the first two and is busy using them to try and get the third. The end of the world- or of humanity- would put an obvious crimp in his plans[[/note]]. To give some specific examples, he pulls a straight up EnemyMine with the clan in "City of Stone", and though he doesn't show up in ''[[GrandFinale Hunter's Moon]]'' until the battle is already won, he's certainly grateful enough that humanity is saved to provide a very timely airlift out of trouble.
* in ''WesternAnimation/{{Reboot}}'', this is the primary conflict between the two viruses infecting Mainframe, [[MagnificentBastard Megabyte]] and [[{{Tsundere}} Hexadecimal]]. [[TakeOverTheWorld Megabyte wants to rule over Mainframe with an iron fist]], while [[OmnicidalManiac Hex is so intent on burning it to the ground that she doesn't even care if she dies too]]. Given Megabyte's [[KickTheDog actions]] and Hex's [[WithGreatPowerComesGreatInsanity obvious insanity]], it's a rare case where the "oblivion" side is the more sympathetic of the two.
** This is similarly both Megabyte ''and'' Hex's motivation with helping fend off The Web creatures: Megabyte can't conquer a deleted system (especially since he'll be deleted along with it), and Hex isn't about to stand idle while something threatens to annihilate the system she has so much fun messing with. [[spoiler:It also presents them with a ''fantastic'' opportunity to take out Bob, which goes off without a hitch]].
* ''WesternAnimation/TeenageMutantNinjaTurtles2012'':
** In Season 3, the Triceratons are trying to destroy the Earth, and Splinter pleads to Shredder to help stop them. [[spoiler:To the horror of everyone, including [[EvenEvilHasStandards Shredder's second-in-command]], Shredder is a huge believer in RevengeBeforeReason, and kills Splinter when he was about to try to stop the doomsday device.]]
** In the first arc of Season 5, Tiger Claw summons the [[DragonsAreDemonic demodragon]] Kavaxas from the Netherworld, intending to [[spoiler:use his power to resurrect the Shredder, who was killed by Leonardo in the season 4 finale. He learns the hard way that EvilIsNotAToy when the Shredder [[CameBackWrong comes back wrong]] as Kavaxas' zombie slave and destroys the [[RestrainingBolt talisman]] Tiger Claw was using to control him, giving Kavaxas free reign to begin TheEndOfTheWorldAsWeKnowIt. This is the ''last thing'' Tiger Claw wants, and he unhesitatingly helps the Turtles put a stop to it.]]
* In ''WesternAnimation/CodeLyoko'', in the episode "Marabounta", XANA and the lyoko-warriors fight together against Jémérie's out-of-control weapon Marabounta which is going to destroy Lyoko.
** In the episode "Common Interest", Jémérie finds out the super computer is failing, but as a middle school student, he has no hopes of obtaining a new plutonium core for the computer. Of course, XANA also doesn't want to die, so he steals one for him to install (along with a radiation suit apparently). Not being GenreBlind, Jémérie knows the moment he installs the core, [[YouHaveOutlivedYourUsefulness XANA is going to try and kill him once this is over]], and calls for backup during one of the power outages.
* The second season of ''WesternAnimation/WanderOverYonder'' introduces Lord Dominator, who, unlike Lord Hater, who is out for conquest and glory, appears to be out to destroy the galaxy by sucking the magma off planets to fuel her ship. Hater and Peepers resolve to save the galaxy from Dominator, so that they can then conquer it.
* ''WesternAnimation/ActionMan2000'': In the finale, [[DarkActionGirl Asazi]] defects from Dr. X and joins up with Action Man to stop him once X unveils his plan to kill all of humanity through ColonyDrop (he had the rest of his Council of Doom believe that it was just a bluff), which she notes would be bad for [[ProfessionalKiller her line of work]].
* PlayedStraight or [[SubvertedTrope Subverted]], depending on how you interpret Zim's goals in ''WesternAnimation/InvaderZim'', Zim [[EnemyMine teams up with Dib]] to prevent Tak from destroying Earth. Zim's motivation isn't so much to prevent Earth's destruction, he just doesn't want Tak to take the glory and destroy [[TheOnlyOneAllowedToDefeatYou what he wanted to conquer and or destroy himself]].
** In the episode "Planet Jackers", another race of aliens steals the earth in a DysonSphere intending to use it like firewood to keep their sun alive. Zim immediately decides he has to stop them since if they do this, ''he'' can't be the one to destroy the earth.