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[[quoteright:250:[[VideoGame/{{Warcraft}} http://static.tvtropes.org/pmwiki/pub/images/arthasx2b250_1777.jpg]]]]
[[caption-width-right:250:[[{{Pun}} From]] [[{{WisePrince}} a nice prince]] to [[EvilPrince an ice prince]].]]
->''The superheroes have turned evil! Most uncool.''
-->-- '''Ethan "Bubblegum" Tate''', ''WesternAnimation/{{Futurama}}''

A good guy turns bad, the opposite of the HeelFaceTurn. The ways in which this happens are many:

* They have become a RivalTurnedEvil.
* They have lost perspective, becoming a WellIntentionedExtremist or KnightTemplar.
* Something horrible has happened that [[DespairEventHorizon shattered their faith in good]], and they have become a FallenHero.
* [[AmbitionIsEvil Lust for power and fortune at any cost]] has brought out their worst.
* [[LoveMakesYouEvil Love has turned into a dangerously out-of-control obsession]].
* NoGoodDeedGoesUnpunished: [[BeingGoodSucks Too many of their good deeds having come back to bite them]] convinces them being a hero is [[ThenLetMeBeEvil no longer worth it.]]
* Their allies have [[HangingSeparately made life too difficult]] or out-and-out [[EtTuBrute betrayed them]].
* They've [[BewareTheNiceOnes snapped]] after one too many rounds of [[BreakTheCutie being put through hell]].
* Fighting evil for too long has led to their [[HeWhoFightsMonsters becoming what they once opposed]].
* They have gone DrunkWithPower.
* They fell prey to TheCorrupter[=/=]TheCorruption, which brought out the worst in them.
* One or more villains [[MoreThanMindControl made a convincing argument]] ([[VillainHasAPoint and may actually be right]]).
* The other faces collectively went through any combination of the above (while remaining protagonists), and they did not.

This is the EvilCounterpart to the more common HeelFaceTurn and is generally found in a story with BlackAndWhiteMorality. The many reasons and the probability for a turn are listed in the SortingAlgorithmOfFaceHeelTurning.

In a world full of {{Brainwashed}} victims, they may be the one who appears to be but really is NotBrainwashed.

The term "Face Heel Turn" comes from ProfessionalWrestling, in which a "good" wrestler (a {{face}}) is occasionally tempted by TheDarkSide, or just gets fed up, and becomes a {{heel}}. Magazines and other promotional material from the various wrestling "leagues" frequently comment on various wrestlers' changes in "alignment" (in wrestling's fictional plotline known as {{kayfabe}}) nearly as frequently as they actually cover events in the ring themselves. (They even use phrases like "Face Heel Turn", though the shorter "Heel Turn" is more common.)

A wrestler's heel turn is often a sign that he or she is about to see his or her popularity skyrocket. Indeed, it is very common, once they have turned, to remain heels for their entire careers. Heels that become ''really'' popular may end up "naturally" becoming faces again, but it is just as likely for heels to be beloved ''because'' [[LoveToHate they are heels]]. In fact, as paradoxical as it might seem, a heel turn can help an otherwise despised wrestler become likable: fans may well resent a face character, and may be better able to relate to a character who is [[ThisLoserIsYou profoundly flawed in one way or another]]. (After all, that's what satire is all about.)

* TheMole: The Mole was always working for the BigBad from the beginning, whereas a character making a Face Heel Turn was a genuine good guy until their change of heart.
* ForcedIntoEvil, whereas the character was still a genuinely good guy, but had his own reasons to be on the bad guys' side while still maintaining a good heart, whereas a character who did a Face Heel Turn is a character who not only goes to the bad guys' side, but also become a genuine bad guy at heart. A character Forced Into Evil can be said about halfway doing a full Heel Turn, but not a full turn yet like the ones in this page (given time, they may make a full turn in the future).
* FaceMonsterTurn, which has ''many'' subtropes. The character really has no choice about becoming evil, because they are Brainwashed, [[AndThenJohnWasAZombie literally turned into monsters]], [[DemonicPossession are possessed]], or some other reason.
* FakeDefector, where someone on the side of good infiltrates the villains' side by pretending to do such a turn.
* EvilAllAlong, in which the character was, well, [[ExactlyWhatItSaysOnTheTin evil all along]], but not necessarily working ''for'' the villain, like TheMole.

Compare ProtagonistJourneyToVillain, a plot which utilizes this trope as the entire character and story arc. BigBadSlippage, where the BigBad does this over the course of the story, is a SubTrope.

See also HeelFaceRevolvingDoor, NeutralNoLonger, DealWithTheDevil, WeUsedToBeFriends, StartOfDarkness and EtTuBrute. If the turn takes place extremely abruptly, it may include JumpingOffTheSlipperySlope.

Not to be confused with EvilAllAlong, in which a character that was thought to be good was [[ExactlyWhatItSaysOnTheTin evil all along]]. This trope describes a legitimate hero going to the darkside, not a DoubleAgent.

'''Due to the nature of this trope, ''MAJOR UNMARKED SPOILERS ahead!'''''

In real-life the nature of HeelFaceTurn and Face-Heel Turn is subjective (one person's "[[HeelFaceTurn seeing the light]]" is another person's "[[FaceHeelTurn heartless betrayal]]" [[HazyFeelTurn depending on what group the individual is going to or leaving]]). Therefore, Administrivia/NoRealLifeExamplesPlease

!Example subpages

* FaceHeelTurn/AnimeAndManga
* FaceHeelTurn/ComicBooks
* FaceHeelTurn/FanWorks
* FaceHeelTurn/{{Film}}
* FaceHeelTurn/{{Literature}}
* FaceHeelTurn/LiveActionTV
* FaceHeelTurn/{{Music}}
* FaceHeelTurn/ProfessionalWrestling
* FaceHeelTurn/ReligionAndMythology
* FaceHeelTurn/TabletopGames
* FaceHeelTurn/VideoGames
* FaceHeelTurn/WebComics
* FaceHeelTurn/WebOriginal
* FaceHeelTurn/WesternAnimation



* ''Machinima/Supermarioglitchy4sSuperMario64Bloopers'': [[spoiler:Enzo. He used to be a friendly guy and was being nice to other people until in "Birthday Freakout", after [[IdiotHero Mario]] ruins his birthday party. From then on he becomes a villain and is determined to kill Mario and the rest of the main cast. He is also actually revealed to be the [[SerialKiller shady black figure]] in "The Visitor" (2014).]]

* Elphaba from ''Theatre/{{Wicked}}'' fits this trope, after having everything she tries spectacularly backfire on her, and having everyone she loves die all around her, she snaps during the song 'No Good Deed' dedicating herself to a lifetime of evil. Almost immediately subverted when she is shown to be just very, very pissed off, but not actually evil a mere song later.
** Nessarose, her sister, goes from a bratty but well-meaning child to the Wicked Witch of the East who, unlike is closer to the [[Film/TheWizardOfOz the film's]] portrayal of her than Elphaba. She is named governor of Munchkinland and uses the position to strip away their power in order to keep her husband Boq from leaving her, and when he tries, [[spoiler:she removes his heart, turns him into the Tin Man, and blames it on Elphaba]]. Likewise, Boq goes from a shy boy with a crush on Galinda to [[spoiler:a far more murderous version of the Tin Man, who declares "for once I'm glad I'm heartless - I'll be heartless killing her!"]].
* In the back story of Creator/{{Euripides}}' ''Hecuba'', Achilles, hero of ''Literature/TheIliad'', defected to Troy after falling in love with Trojan princess Polyxena. And then his would-be brother-in-law Paris shot him in his AchillesHeel ''at the wedding'', and everything went pear-shaped for the Trojans.
* This is essentially the entire plot of ''Theatre/SweeneyToddTheDemonBarberOfFleetStreet'' as the protagonist begins a sympathetic AntiHero, progresses into AntiVillain territory over the length of the first act, and finally crosses the MoralEventHorizon with gusto by intermission, largely due to SanitySlippage.
* Invoked by Pulitzer in ''Theatre/{{Newsies}}'', by threatening to have the Newsies arrested if Jack doesn't agree to end the strike. In exchange, Jack tries to argue against ''his own cause'' at the rally ''he organized'', despite protests from Spot and Davey. Luckily, Katherine talks him down, and he relents.