History FaceHeelTurn / WesternAnimation

''WesternAnimation/TangledtheSeries''

** Why hasn't anyone mentioned Wheeljack from ''Anime/TransformersArmada''? He has one after believing that Hot Shot abandoned him and turns Decepticon.
** Back to ''Beast Wars'', there is also Rhinox/Tankor in the sequel show ''WesternAnimation/BeastMachines''. Rhinox also became a predacon in one episode when he got his alignment switched. He got switched back when the Preds found out the only thing stopping him from ''killing everyone single-handedly'' was his morality.

** Back to ''Beast Wars'', there is also Rhinox/Tankor in the sequel show ''WesternAnimation/BeastMachines''.

* Jojo does this in a rather epic fashion in ''WesternAnimation/ThePowerpuffGirls'' movie: "[[LargeHam The hobo formerly known as Jojo is no more! From this day on, I shall be known as... MOJO Jojo!]]" Then again, he was EvilAllAlong, so this might not count.

*** This was loosely based on issue #24 of the Gold Key ''Scooby'' comic story "Mark of the Blue Scarab." The perp in this case was [[spoiler: a comic book scripter who thought he was a better writer than Sloane was an artist.]] Both the comic and the animated episode were written by Mark Evanier.

* Jojo does this in a rather epic fashion in ''WesternAnimation/ThePowerpuffGirls'' movie, in what also counts as a CrowningMomentOfAwesome: "[[LargeHam The hobo formerly known as Jojo is no more! From this day on, I shall be known as... MOJO Jojo!]]" Then again, he was EvilAllAlong, so this might not count.

* Parodied in ''WesternAnimation/EdEddNEddy'' when, after a misunderstanding caused the other kids to beat up Captain Melonhead (Jonny) and Splinter the Wonder Wood (Plank), they became The Gourd and Timber the Dark Shard to get revenge on the cul-de-sac. Too bad the movie was over.

* Creator/HannaBarbera's Muttley CaptainErsatz as well as Series/{{Columbo}} {{Expy}} Mumbly was made a bad guy in ''WesternAnimation/LaffALympics'' and ''Yogi Bear and the Magical Flight of the Spruce Goose'' because they didn't have all the rights to ''WesternAnimation/WackyRaces'' at the time and [[TheyJustDidntCare couldn't be bothered]] to create a new character.

* Demona in ''WesternAnimation/{{Gargoyles}}'', who became obsessed with committing genocide against humans after her clan was massacred.
* In ''WesternAnimation/{{Metalocalypse}}'', when Toki gets fed up with always being the child friendly one and then starts burning the lair with a flamethrower.

* Raimundo in the season one finale of ''WesternAnimation/XiaolinShowdown''. Shortly into season two, he [[HeelFaceTurn reverses it]] and returns to his friends, but not without suffering some consequences and trust issues.
** Omi undergoes an involuntary turn after coming back from the yin/yang dimension, leaving his good side behind.
* Elyon Brown in ''WesternAnimation/{{WITCH}}''.
* Dinobot in the ''Franchise/{{Transformers}}: WesternAnimation/BeastWars'' episode "Maximal No More." He does a HeelFaceTurn back at the end, though, upon realizing that just because everything's going according to Megatron's plans doesn't mean that Megatron isn't a dangerous madman.
** Blackarachnia in ''WesternAnimation/TransformersAnimated'' pulls her FaceHeelTurn during the (mainly) flashback episode "Along Came A Spider". We discover that when they were in the Autobot Academy, Elita-1, Sentinel, and Optimus went to an organic planet, even though it was forbidden, and they encountered giant spiders. Escaping from the spiders, Elita used her download power to borrow Optimus's grapplers, but ran out of time, falling into a pit full of the spiders when Optimus failed to catch her with his other grappler. She attempted to use her download power on the spiders, but, the spiders being organic, it turned her into a mutated part-organic, part-mechanical Transformer with one of the spiders as her alt-mode. The new signal type made her impossible for Optimus to pick up on his radar, and led him and Sentinel to believe Elita was dead, and Blackarachnia to believe they abandoned her, and she joined the Decepticons.
** Why hasn't anyone mentioned Wheeljack from ''Anime/TransformersArmada''? He has one after believing that Hot Shot abandoned him and turns Decepticon.
** Back to ''Beast Wars'', there is also Rhinox/Tankor in the sequel show ''WesternAnimation/BeastMachines''.
* Tai Lung of ''WesternAnimation/KungFuPanda''.
* A {{Flashback}} episode of ''[[WesternAnimation/ChallengeOfTheGoBots GoBots]]'' revealed that Cy-Kill was once Leader-1's best friend, but frustration over the leadership of Gobotron caused Xy-Kill to join the rebellion (and eventually lead it). In fact, the name of the episode where this is told is "[[Theatre/JuliusCaesar Et Tu, Cy-Kill?]]"
* In ''WesternAnimation/KimPossible'', [[TheDragon Shego]] used to be a superhero before becoming a villain. Various other characters have short heel turns, often for a single episode, including Ron at least twice.
** Most due to the Attitudinator, a HeelFaceTurn[=/=]Face Heel Turn [[AppliedPhlebotinum in a helmet]]. One episode with it caused a HeelFaceRevolvingDoor for everyone but Kim Possible.
* Professor Hamilton, a longtime Superman supporter, as seen in ''WesternAnimation/SupermanTheAnimatedSeries'', turns against him in ''[[WesternAnimation/JusticeLeague Justice League Unlimited]]''.

* Gibbs from Creator/AdultSwim's ''WesternAnimation/TitanMaximum''. His Face-Heel Turn in the first episode generates the conflict for the rest of the series. Unfortunately, it seems that he's perhaps the only character with any shred of competence.
* A fictional pro wrestling example. In one episode of ''WesternAnimation/{{Futurama}}'', Bender becomes a popular robot wrestler named Bender the Offender. After his popularity fades, management turns him into the Gender Bender.
* Creator/HannaBarbera's Muttley CaptainErsatz as well as Series/{{Columbo}} {{Expy}} Mumbly was made a bad guy in ''WesternAnimation/LaffALympics'' and ''Yogi Bear and the Magical Flight of the Spruce Goose'' because they didn't have all the rights to ''WesternAnimation/WackyRaces'' at the time and [[TheyJustDidntCare couldn't be bothered]] to create a new character.
* In the second ''[[WesternAnimation/TeenageMutantNinjaTurtles2003 TMNT]]'' series, the real Oroku Saki was originally one of a group of warriors that defeated a powerful demon. However Saki [[WithGreatPowerComesGreatInsanity absorbed the power]] and became the Tengu Shredder.
** Vernon Fenwick in the first ''[[WesternAnimation/TeenageMutantNinjaTurtles1987 TMNT]]'' series, to a lesser degree. He is originally, for the most part, is an ally to the Turtles, however, at the beginning of the eight season (the first of the infamous Red Sky Era), after the Channel 6 building is destroyed by Shredder, Vernon then sides with Burne Thompson in seeing the Turtles as menaces to society, as they weren't able to save the building in time (and Shredder blew it up because he believed they captured Krang).
* Parodied in ''WesternAnimation/EdEddNEddy'' when, after a misunderstanding caused the other kids to beat up Captain Melonhead (Jonny) and Splinter the Wonder Wood (Plank), they became The Gourd and Timber the Dark Shard to get revenge on the cul-de-sac. Too bad the movie was over.

* In the ''WesternAnimation/MyLittlePonyFriendshipIsMagic'' episode ''[[Recap/MyLittlePonyFriendshipIsMagicS4E25TwilightsKingdomPart1 Twilights Kingdom Part 1]]'', Discord is swayed into helping Tirek in exchange for true freedom.
** Before then there was Princess Luna's descent into Nightmare Moon during the backstory.
* ''WesternAnimation/WinxClub'': Riven in season one, Bloom (via MindControl) in season two, and [[spoiler:Aisha]] in season four.
* [[spoiler:Aqualad/Kaldur'ahm]] in season two of ''WesternAnimation/YoungJustice'', after he becomes embittered at his former friends for [[spoiler:letting Tula die during a mission gone wrong]] and his own mentor, [[spoiler:Aquaman, for hiding the truth about his real, supervillain father, Black Manta. Kaldur ends up joining him.]]
** [[spoiler:Turns out he only faked his turn and is deep undercover for the Team.]]

* ''WesternAnimation/GreenLanternTheAnimatedSeries'': This happens to Aya after she shuts down her emotions and takes over the Anti-Monitor's body, becoming a KnightTemplar bent on eliminating all organic life to the point that she goes back in time to rewrite the creation of the universe. [[spoiler:She comes to her senses when she accidentally nearly kills Razer.]]
* The Franchise/DisneyAnimatedCanon
** In ''Disney/TheAristocats'', we get to see Edgar turn into a villain the minute he realizes he can get all of his madam's wealth if he gets rid of her cats.
** Perhaps one of the more tragic examples is Copper from ''Disney/TheFoxAndTheHound'' turning into a full-on hunting dog, [[AntiVillain while still being a nice person at heart]] and [[WeUsedToBeFriends not wanting to kill his former friend]] Tod the fox. So to say, Copper does not become evil, but he's permanently switched to the side of his spiteful old hunting master, which puts him opposite of Tod, left to fulfill the traditional protagonist role.
** Denahi in ''Disney/BrotherBear'', after he thinks a bear killed his brother Kenai (in reality, his brother Kenai was ''[[KarmicTransformation turned]]'' [[BalefulPolymorph into a bear]]). He spends most of the film on a RoaringRampageOfRevenge trying to kill Bear!Kenai until the very end where Kenai is transformed back right before his eyes.

* "Turf Wars", the last episode of the 2006 revival of ''WesternAnimation/BikerMiceFromMars'', revealed that Harley, Vinnie's girlfriend and one of the Martian freedom fighters who rebelled against the Plutarkian invasion from the original 1993 series, became disfigured while trying to flee from the Plutarkians and sided with the Rats because she believed the Biker Mice abandoned her. The Biker Mice did not abandon her, and were in fact aghast to see an old ally become their enemy.
* Harvey Dent going from the respected attorney he was to the dangerous criminal Two Face in ''WesternAnimation/BatmanTheAnimatedSeries'' is done as a serious TearJerker. He had already been an established and likable character beforehand who suffered from anger issues until a disfiguring injury pushed him over the edge and made his [[SplitPersonality psychotic alternate personality]] become dominant, and Batman has never ''once'' stopped regretting being unable to save him ''or'' given up on swaying him back to being a good guy.

* Harvey Dent going from the respected attorney he was to the dangerous criminal Two Face in ''WesternAnimation/BatmanTheAnimatedSeries'' is done as a serious TearJerker. He had already been an established and likable character beforehand who suffered from anger issues until a disfiguring injury pushed him over the edge and made his [[SplitPersonality psychotic alternate personality]] become dominant, and Batman has never ''once'' stopped regretting being able to save him ''or'' given up on swaying him back to being a good guy.

* "Turf Wars", the last episode of the 2006 revival of ''WesternAnimation/BikerMiceFromMars'', revealed that Harley, Vinnie's girlfriend from the original 1993 series and one of the Martian freedom fighters who rebelled against the Plutarkian invasion, became disfigured while trying to flee from the Plutarkians and sided with the Rats because she believed the Biker Mice abandoned her. The Biker Mice did not abandon her, and were in fact aghast to see an old ally become their enemy.

* "Turf Wars", the last episode of the 2006 revival of ''WesternAnimation/BikerMiceFromMars'', revealed that Harley, Vinnie's girlfriend from the original 1993 series, became disfigured while trying to flee from the Plutarkians and sided with the Rats because she believed the Biker Mice abandoned her. The Biker Mice did not abandon her, and were in fact aghast to see an old ally become their enemy.

* Demona in ''WesternAnimation/{{Gargoyles}}''

* The DisneyAnimatedCanon

* Gibbs from Creator/AdultSwim's ''WesternAnimation/TitanMaximum''. His heel face turn in the first episode generates the conflict for the rest of the series. Unfortunately, it seems that he's perhaps the only character with any shred of competence.