* ''Franchise/SonicTheHedgehog'':
** In the games and most cartoon adaptations, Dr "Eggman" Robotnik is villainous, but with a highly [[AffablyEvil affable]] and [[LaughablyEvil clownish demeanor]], and in some cases leans into AntiVillain territory. Robotnik of ''WesternAnimation/SonicSatAM'' and to a lesser extent ''WesternAnimation/SonicUnderground'', however, is a monstrous (and far less humorous) dictator that not only has taken over most of the planet but thrives almost lustfully on having any remaining civilians [[BodyHorror painfully]] [[UnwillingRoboticisation roboticized]]. This depiction is drifted in and out for both comic adaptations (although they refer to his more petty, comical personality a lot more).
** Inverted in ''WesternAnimation/AdventuresOfSonicTheHedgehog'' where Robotnik, while still [[CardCarryingVillain blissfully evil]], is instead portrayed as an oafish buffoon who does nothing but get kicked around by not only Sonic and Tails, but also ([[StopHelpingMe usually inadvertently]]) by his own cronies Scratch and Grounder as well.
* ''Franchsie/{{Batman}}'':
** In the comics, Kirk Langstrom created the serum that turned him into Man-Bat to cure his own deafness, but on ''WesternAnimation/TheBatman'', he transforms himself into the Man-Bat out of a desire to be feared. That said, by his appearance in the fifth season, he's done a FaceHeelTurn, saying that he's done with being Man-Bat and even offers to assist in stopping the Terrible Trio.
** ''WesternAnimation/BatmanTheBraveAndTheBold'' depicts the SilverAge ComicBook/{{Batwoman}} as a washed-up former superhero who captures Batman and then tries to murder the Riddler as payback for ruining her career. The depiction was so at odds with her comic counterpart that the creators were forced to refer to the character as "Bat-Lady" and [[AdaptationNameChange change her name from Kathy Kane to Katrina Moldoff]].
** A ''WesternAnimation/BewareTheBatman'' example is the BigBad Anarky. In the comics, Anarky was depicted as twelve year old Lonnie Machin, a political anti-government activist and altruist who saw humanity as naturally good, but with consumerism and big government getting in the way. He wasn't a villain more than he was an anti-hero who even Batman acknowledged was well intentioned but misguided. Beware's Anarky is a self-diagnosed sociopath and aimless terrorist whose only difference between him and The Joker is name and chess theme.
** Also from ''Beware the Batman'' is [[spoiler:Sapphire Stagg, the good-natured love interest of Metamorpho in the comics, who is here depicted as very much similar in nature to her corrupt father, Simon Stagg.]]
** Add [[spoiler:Harvey Dent, who is usually a man of justice and a big supporter of Batman (at least before [[FaceHeelTurn his transformation into Two-Face]]), now a hater of Batman who teams up with Anarky to kill him and hires Deathstroke to take down Batman, to the list.]]
** Sort of with Ra's Al Ghul. His actual motivations are unclear, but he doesn't seem to have the WellIntentionedExtremist goals of his comic counterpart. On the other hand, he seems hellbent on focusing on Gotham only, so the rest of the world doesn't have to deal with genocidal plots.
* In the book ''Cranberry Christmas'', Cyrus Grape is a [[GrumpyOldMan curmudgeonly old man]] who refuses to let anyone skate on his pond, but gets his comeuppance when Mr. Whiskers finds a deed that proves the lake is actually on his property. In the animated special, Cyrus is a much more active antagonist, sneaking around and messing up Mr. Whiskers's house in order to keep Mr. Whiskers from finding that deed (whereas in the book he had no idea it existed).
* ''WesternAnimation/TransformersAnimated'' actually did this to the character Waspinator from ''WesternAnimation/BeastWars''. While ''Beast Wars'' Waspinator is portrayed as the lovable ButtMonkey who does nothing but get kicked around by other characters (though he does manage to injure the occasional Maximal, usually not by accident), ''Animated'' Waspinator, now renamed Wasp, is downright terrifying, and wants to get revenge on everyone who abused him.
** Sentinel Prime in the comics was one of Optimus' main allies and mentor. Here, he's a {{Jerkass}}, a [[FantasticRacism racist]], and a DirtyCoward.
* Captain Hook of ''Literature/PeterPan'', while usually depicted as a LaughablyEvil and relatively mild villain (particularly in the [[Disney/PeterPan Disney adaptation]]), is genuinely sinister in ''WesternAnimation/PeterPanAndThePirates''. Despite a FreudianExcuse and occasional sympathetic moments, this version of Hook was by far the darkest portrayal of the character until the one from [[Film/PeterPan the 2003 live-action version]].
* ''WesternAnimation/YoungJustice'': Klarion the Witch Boy, whose portrayal in the comics generally ranges from an annoying troublemaker (JackKirby's version) to a well-meaning anti-hero (GrantMorrison's version), is much more solidly on the side of the black hats here.
** Also played straight with L-Ron. In the comics, he's a sidekick to the JusticeLeagueInternational, while in the show he's Despero's assistant.
* Speaking of Klarion, he's also clearly evil when he appears in ''WesternAnimation/BatmanTheAnimatedSeries'', stealing control of Etrigan from Jason Blood, tearing Gotham apart simply for fun, and using potential lethal spells on Batman when the hero tries to stop him. He finally crosses the MoralEventHorizon by telling Etrigan to kill Blood (who is aging at an accelerated rate and nearly helpless due to the Demon being separated from him).
* Rampage, a minor heroine from Franchise/{{Superman}} Post-Crisis comics, is turned into a villain in ''[[WesternAnimation/JusticeLeague Justice League Unlimited]]''.
* Tublat the gorilla from ''Literature/{{Tarzan}}'' by Creator/EdgarRiceBurroughs. In Disney's ''WesternAnimation/TheLegendOfTarzan'', his character is [[CompositeCharacter merged rather confusingly]] with another, Kerchak. Since Disney decided to make their version of Kerchak (who is ironically more similar to Burroughs's Tublat in personality) more sympathetic, as a consequence they ended up making their version of Tublat more sinister, like the novel's Kerchak.
** Similarly, Professor Phineas T. Philander went from Professor Porter's absent minded friend and colleague in the books to his rival and SmugSnake in the animated series.
* Not only, as shown above and in the AdaptationalVillainy/AnimatedFilm page, has {{Disney}} done this to several characters in their adoptive works, ''they've even done this to their own characters as well''. While ScroogeMcDuck is somewhat of a JerkWithAHeartOfGold in most of his appearances (particularly ''WesternAnimation/DuckTales'' and ''Disney/MickeysChristmasCarol''), in the ''MickeyMouseworks'' adaptation of ''Literature/AroundTheWorldInEightyDays'', he plays the main villain, determined to prevent Mickey and Goofy from gaining the inheritance necessary to save the orphanage, even going so far as to sabotage the boat taking them back to London to ensure they don't make it time.
* In the TV show ''WesternAnimation/MegaMan'', Proto Man is one of the major villains. In the games, while he did work for [[BigBad Dr. Wily]] [[VideoGame/MegaMan3 briefly]], he had a HeelFaceTurn and became an ally to Mega Man, if a [[AloofAlly distant one]].
* In the ''ComicBook/SpiderMan'' comics SilverSable is an [[AntiHero anti-heroic]] mercenary. While she sometimes fights Spider-Man, they usually team up to fight the real villain. In ''WesternAnimation/TheSpectacularSpiderMan'', Silver Sable is a MafiaPrincess and a straight up villain, since she's the [[DaddysLittleVillain daughter]] of the mob boss Silvermane in the show.[[note]] WordOfGod says that had the show continued, she would have [[HeelFaceTurn evolved]] into her usual anti-heroic persona.[[/note]]
** Ricochet is a member of the Enforcers ([[CompositeCharacter Fancy Dan]]) rather than a teen vigilante like in the comics.
* Anubis is a villain in the TV show ''WesternAnimation/MummiesAlive'', when he was actually a [[DarkIsNotEvil good god]] in EgyptianMythology who guarded and protected the dead. Set is also seen with Anubis, while Set disowned him in the myths for siding with Horus.
** Ammit, on the other hand, is portrayed as a pet of the BigBad. In Egyptian mythology she was a neutral enforcer of order and punisher of evil, although this quality made her [[GoodIsNotNice feared by the ancient Egyptians]].
* The ''WesternAnimation/StreetFighter'' animated series made Zangief into one of M. Bison's lackeys, despite the fact that Zangief actually opposed Shadaloo in the games.
* While the Red Lantern leader Atrocitus was [[AntiHero in no way]] [[KnightTemplar a nice guy]] in the ''ComicBook/GreenLantern'' original comics, he was more of an AntiHero whose hate was focused on the Green Lantern Corps and who was reluctant to endanger innocents. His animated counterpart in ''[[WesternAnimation/GreenLanternTheAnimatedSeries Green Lantern: The Animated Series]]'', while retaining his WoobieDestroyerOfWorlds backstory, is completely crazy and genocidal, willing to destroy whole planets to reach his goals and cause wars or personal tragedies to get new recruits.
* Season 1 of ''WesternAnimation/JusticeLeague'' had two CanonForeigner villains named Tsukuri and Aresia, who were {{Exp|y}}ies of ComicBook/{{Katana}}, a member of [[ComicBook/BatmanAndTheOutsiders the Outsiders]] and ComicBook/BirdsOfPrey, and Fury, a member of InfinityInc Heck, Aresia's debut episode was even called "[[MythologyGag Fury]]"! Season 2 and ''Unlimited'' respectively introduced Hro Talak and Galatea, similar Expies for ComicBook/{{Hawkman}} and ComicBook/PowerGirl.
** ''Justice League Unlimited'' also had expies of all the {{Canon Foreigner}}s of the WesternAnimation/SuperFriends in antagonistic roles.
* Colossus and Gambit were members of {{Magneto}}'s Acolytes in ''WesternAnimation/XMenEvolution'', despite being actual members of the X-Men in the comics. They eventually pulled a HeelFaceTurn and were seen as part of the team in the epilogue.
* For some odd reason, ''WesternAnimation/WolverineAndTheXMen'' is FULL of this (possibly some of these characters would have returned as heroes had the second season been made):
** Domino is a member of the ComicBook/XForce and ComicBook/XMen in the comics, but is depicted as a terrorist and member of the Brotherhood of Mutants in the show, basically becoming Mystique in all but name and powers as Mystique herself is TheDragon to Magneto.
** Multiple Man is a member of Mr. Sinister's Marauders, despite being a main character in ''Comicbook/{{X-Factor}}'' since the 90's.
** Likewise, the Stepford Cuckoos are shown as villainous members of the Hellfire Club, despite being students at the Xavier Institute in the comics.
** Psylocke assists the Brotherhood in one episode, but she's shown to be a reluctant recruit who only helps out the group because [[YouOweMe she owes Quicksilver a favor]].
** Blink was associated with ComicBook/GenerationX and was a member of the ComicBook/NewMutants. Her better-known alternate version rose from ComicBook/AgeOfApocalypse mainstay to leader and main hero of the Comicbook/{{Exiles}}. In the show, she's a member of {{Magneto}}'s Acolytes.
** Mercury, another member of the Acolytes, was a member of the [[NewMutants New X-Men]] in the comics.
** In the comics, ComicBook/ScarletWitch and ComicBook/{{Quicksilver}} abandoned Magneto very quickly and joined Comicbook/TheAvengers. In the show, Quicksilver is still a member of the Brotherhood, while Scarlet Witch is loyal to her dad. It isn't until the finale that she finally realizes what a monster Magneto is and turns against him.
** Mags himself: in the comics, he's a WellIntentionedExtremist or an AntiHero depending on the [[HeelFaceRevolvingDoor decade]]. He was last wa-ha-ha evil in TheSeventies, and the last time he was an enemy was done in such an OutOfCharacterMoment that it was {{Retcon}}ned into being someone else ''immediately'', making a ''1993'' storyline the last time we saw him as anything but his normal portrayal (half the team wants to trust him, the other half says "yeah, but you don't know '''how''' bad he was when he was bad," and his WildCard moments don't make anybody any more comfortable.) and it's not like nobody provoked him then.[[hottip:*:Of course, he gave 'em plenty of reason to think they had to strike first... it's complicated.]] WATXM Magneto appears to be similar to comic Magneto at first but at heart is as monstrous as it gets, more like his sixties/Morrison/Ultimate incarnations.
** Emma Frost. Like Mags, she ''used'' to be one hell of a foe (even being BigBad of ComicBook/NewMutants for a time) but comic fans know that that was a long time ago, at least in the main MarvelUniverse. In this one she's TheMole and still the White Queen of the Hellfire Club. However, in the finale she sacrifices her life to contain the Phoenix.
** ''The Phoenix.'' This is far from the first adaptation to do so, but it's worth mentioning that in the comics, Jean as Phoenix was good but AntiHero-ish, had to resist darker impulses but stayed in control (she was actually Phoenix for ''quite'' some time), and even saved the universe. It took the Hellfire Club's interference to cause her to become Dark Phoenix. This version uses TheThemeParkVersion where the Phoenix is a 100% Bad Thing. Of course, the Hellfire Club ''was'' trying to control the Phoenix in this version, but it wasn't quite the same as [[TheIllusionist Jason Wyngarde]] and [[MindControl Emma Frost]] putting her under MoreThanMindControl and pretty much breaking down her self-control bit by bit until we get a monster.
* Morrigan in the ''WesternAnimation/{{Darkstalkers}}'' cartoon. In the games, she is just having fun with no regard for the rest of the cast, in the show, she's Pyron's minion. The series finale implies she becomes closer to how she is in the games if a season 2 ever came. Also, Anakaris, Bishamon, and to some extent Demitri were victims of this.
* ComicBook/WonderMan was a villain for only one issue of the original ''[[ComicBook/TheAvengers Avengers]]'' series, and has been depicted as a hero for the vast majority of his published existence. Despite this, he's a TragicVillain and member of the [[LegionOfDoom Masters of Evil]] in ''WesternAnimation/AvengersEarthsMightiestHeroes''. He does however make a HeelFaceTurn in his final appearance, where he [[spoiler:pulls a HeroicSacrifice to stop Enchantress]].
** ComicBook/TheFalcon and Doc Samson appear as part of Code Red, a team of government-sponsored superheroes who act in opposition to the Avengers. In the comics, the Falcon is ComicBook/CaptainAmerica's sidekick and a longtime member of the Avengers himself, while Doc Samson is an ally of the Hulk. Partially justified though, since it turns out they were [[BrainwashedAndCrazy brainwashed]] by the RedSkull. (And both of them ''have'' had notable BrainwashedAndCrazy stories in the comics; in Falcon's case at the hands of the Skull.)
* [[ComicBook/SquadronSupreme Hyperion]] in ''WesternAnimation/AvengersAssemble'' gains the villainy of King Hyperion, his MirrorUniverse counterpart from ''ComicBook/{{Exiles}}''. As such, he's depicted as a sociopathic WellIntentionedExtremist who is revealed [[spoiler: to have destroyed his own planet when they wouldn't submit to his rule]].
* In ''Literature/TheRailwaySeries'' novels, Diesel only returned to Sodor once in the individual story "Thomas and the Evil Diesel" where he redeemed himself and was given good word to come back. In the ''WesternAnimation/ThomasAndFriends'' series, Diesel made recurring returns to Sodor and eventually became a permanent resident, though he ultimately proved as nasty as before, usually acting as the key antagonistic engine and pulling cruel pranks. Similarly to the novel version though, he is given some sympathetic moments.
** Reversed for Bulgy, a bus who [[FantasticRacism disliked railways]] and tried to steal customers from the trains through lying that he accepted rail tickets. In the books, he is punished by being converted into a henhouse. While this is followed in his first appearance in the TV series, he is later repaired, changed into a vegetable stand, and [[HeelFaceTurn softens]] towards the other characters.
* The animated movie ''[{Literature/{Heidi}} Heidi's Song]]'' is a curious example of this, as it not only makes Fräulein Rottenmeier much more villainous and scary, but also turns Sebastian the butler (in the book a ServileSnarker but very much a kind man) into her [[TheDragon Dragon]] -- but utterly reverses it when it comes to Tinette the maid, who in the book is a haughty and snooty woman whom Heidi is slightly afraid of but in the movie is a sweet and sympathetic person. Possibly the shift was done so the movie wouldn't have two female villains.
* In the FunnyAnimal adaptation ''TheLegendsOfTreasureIsland'' Long John Silver is a more straight up LaughablyEvil villain and mostly void of the sympathetic AffablyEvil facets of his novel counterpart (and most other variations of). Perhaps most notably, his fatherly role with Jim is completely gone and for the most part, he would love nothing better than to just send the boy down the plank, or worse.
* For most of the ''WesternAnimation/SuperFriends'' series, Bizarro is depicted as a clear villain who has murderous designs on the super heroes. However, the final season depicts him faithfully from the comics as a well-meaning bumbler.
* While the [[ComicBook/TeenageMutantNinjaTurtlesMirage original comic book]] incarnation of Franchise/TeenageMutantNinjaTurtles' Karai has interests that occasionally pit her against the turtles, she is unambiguously their ally. This has changed in the [[TMNT2003 2003]] and [[WesternAnimation/TeenageMutantNinjaTurtles2012 2012]] cartoon adaptations, where she has been made into the Shredder's daughter and subordinate. While she will at times fight alongside the turtles, her divided loyalties result in periods where she is wholeheartedly against them.
** The [[TeenageMutantNinjaTurtles1987 1980s cartoon]] is notable for being the only version to portray the character of Leatherhead as truly villainous, as opposed [[ComicBook/TeenageMutantNinjaTurtlesMirage to]] [[ComicBook/TeenageMutantNinjaTurtlesAdventures all]] [[TMNT2003 other]] [[WesternAnimation/TeenageMutantNinjaTurtles2012 versions]] where he is an ally of the Turtles, and any time he fights them in those continuities is because of him being either NotHimself or manipulated into doing it by another antagonist.
** [[spoiler:Irma in the 1987 series is April's dorky, boy crazed friend who worked with the turtles. In the 2012 series, she's actually a Kraang in a customized robotic suit who was TheMole, faking her friendship with April to find the Turtles' lair]].
* Hades wasn't the only guy to fall victim to this in ''Disney/{{Hercules}}''. In the ongoing series, King Midas - of all people - was made into a would-be EvilOverlord. (Albeit [[IneffectualSympatheticVillain not a very good one]] and one who repents at the end, but still...)
* In ''WesternAnimation/ScoobyDooMysteryIncorporated'', [[spoiler:Mudsy]] is a MonsterOfTheWeek and a disgruntled out-of-work actor who turned on his mystery-solving team. In his original appearances during [[WesternAnimation/TheFunkyPhantom his own show]], he was harmless and much more friendly. This is a JustifiedTrope in that it is AllJustADream and there is no "real" [[spoiler:Mudsy]] in-universe.
* Zig-zagged and parodied in ''WesternAnimation/TeenTitansGo'' with Terra. The original ''WesternAnimation/TeenTitans'' made her an example of AdaptationalHeroism. In the episode "Terra-ized", she has actions similar to her [[ComicBook/TeenTitans comic book counterpart]]; and openly tries to seduce Beast Boy in order to get sensitive information on the Titans. Only Robin and Raven suspect her of villainy, while Cyborg and Starfire are not convinced despite Terra trying to bring them down every scene she's in. When Beast Boy tries to return her advances, she drops all pretense and decides to fight the Titans for the information she needs.
* ''WesternAnimation/MyLittlePonyFriendshipIsMagic'''s Snips' and Snails' human counterparts in ''WesternAnimation/MyLittlePonyEquestriaGirls'' are a lot more antagonistic than them.
** Sunset Shimmer counts too. Her toy bio doesn't give any hint she's remotely malicious.
* Brainy in ''WesternAnimation/TheSmurfs'' episode "King Smurf" became the titular character, whereas in the original comic book version he was a contender for the role of the village leader who was outvoted in favor of the Smurf who would become King Smurf.
* In ''Literature/TheLittlePrince'', the yellow snake, while he represents death, is not necessarily a villain, and may even be ultimately helpful. While the narrator sees him as evil, the Little Prince himself [[DontFearTheReaper does not]], [[spoiler:and it is left open as a possibility that the snake, by biting him, did help the Prince return to his asteroid]]. In the [[WesternAnimation/TheLittlePrince animated TV series adaptation]], the Snake is an unambiguously evil, even demonic EldritchAbomination who travels around the galaxy [[TheCorrupter corrupting planets]] by tempting their rulers to give in to their basest desires.
* From ''WesternAnimation/AroundTheWorldInEightyDays'' we have Fix. Where in [[Literature/AroundTheWorldInEightyDays the original novel]] Fix was a Scotland Yard detective who chased Phileas Fogg because he believed him guilty of bank robbery, here he's a thug hired by the malicious Lord Maze to stop Fogg from [[TitleDrop going around the world in 80 days]] so Fogg could marry Lord Maze's niece.
* In the classic two-reel 1936 Popeye short ''Popeye the Sailor Meets Sindbad the Sailor'', Literature/{{Sinbad}} is a villain, portrayed by Bluto.
* In ''WesternAnimation/ThunderCats2011'', [[spoiler:Pumyra]] receives this treatment. [[spoiler:Granted, she's not the original Pumyra, but a vengeful spirit given physical form by Mumm-Ra to serve her.]]
* While Sea Rogue from ''WesternAnimation/{{TUGS}}'' was a friend of the Star Tugs who was [[Main/ForcedIntoEvil forced against his will to steal cargo for pirates or they'd sink his uncle]], in the CutAndPasteTranslation, ''Salty's Lighthouse'', he became a villain who liked to steal cargo.
* In the Franchise/SpiderMan comics and most adaptations, Curt Connors is a sympathetic character and generally [[NiceGuy good-natured]] when he isn't [[SuperpoweredEvilSide the Lizard]]. In ''WesternAnimation/SpiderManTheNewAnimatedSeries'', he is a much more bitter and unpleasant character even before his transformation.
* Alcuard is a mole in ''WesternAnimation/CaptainNTheGameMaster'', and ends up turning on the main characters, including Simon Belmont, in favor of his father, Dracula. In the ''VideoGame/{{Castlevania}}'' video games, Alcuard's firmly on the side of the good guys, hates Dracula, and is one of Simon's main allies in the series.
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