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* In ''Animation/PleasantGoatAndBigBigWolf: Joys of Seasons'' episode 95, an amnesiac Wolffy, [[IdentityAmnesia fully convinced he's Weslie the goat]], not only acts friendly towards the actual goats but tries to defend them from the other wolves. It doesn't end well for him, as the other wolves win the fight and drag him off.
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There are several factors that can affect the outcome. If the villain in question is treated with kindness by the heroes, he may take ThePowerOfFriendship into consideration, especially if he never felt love and friendship before. If he's treated badly by the heroes, either because [[ReformedButRejected they're not convinced that he's now on their side]] or by one person who [[AccuserOfTheBrethren repeatedly rejects his attempts to do good]], he may decide that it's better off to stay evil, sometimes [[ThenLetMeBeEvil becoming what exactly they accused him for]]. In some cases, the villain will stay evil [[UndyingLoyalty out of loyalty to his own organization]], refusing to betray the other villains who trusted him. Last but not least, whether the villain would [[HeelRealization realize his past deed was damaging]].

Sometimes, the heroes will hope that the said villain won't regain his past memories. They will actively try to stop him from remembering anything, feeding him FakeMemories, or even [[HeelFaceBrainwashing brainwashing him into becoming good]]. Taking one step further, they will even try to eliminate the villain before he can remember anything. If the heroes [[KillHimAlready have different opinions on how to dispose the said villain]], it may lead to a [[WeAREStrugglingTogether conflict]] or even a flat-out [[DividedWeFall infight]] between them.

Occasionally, some villains exploit this and [[FakingAmnesia pretend they suffer from amnesia]]- or even go so far as to [[MemoryGambit inflict amnesia on themselves]]- so they can [[FakeDefector blend with the heroes and gain their trust]].

Compare AmnesiacsAreInnocent, where amnesiac people, in general, are treated as innocent. Contrasts AmnesiacHero, where the hero suffers from amnesia, and CriminalAmnesiac, where a hero suffering from amnesia is being convinced that they're supposed to be a villain.

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There are several factors that can affect the outcome. If the villain in question is treated with kindness by the heroes, he may take ThePowerOfFriendship into consideration, especially if he never felt love and friendship before. If he's treated badly by the heroes, either because [[ReformedButRejected they're not convinced that he's now on their side]] or by one person who [[AccuserOfTheBrethren repeatedly rejects his attempts to do good]], he may decide that it's better off to stay evil, sometimes [[ThenLetMeBeEvil becoming what exactly what they accused him for]].of]]. In some cases, the villain will stay evil [[UndyingLoyalty out of loyalty to his own organization]], refusing to betray the other villains who trusted him. Last but not least, whether the villain would [[HeelRealization realize his past deed was damaging]].

Sometimes, the heroes will hope that the said villain won't regain his past memories. They will actively try to stop him from remembering anything, feeding him FakeMemories, or even [[HeelFaceBrainwashing brainwashing him into becoming good]]. Taking it one step further, they will even try to eliminate the villain before he can remember anything. If the heroes [[KillHimAlready have different opinions on how to dispose of the said villain]], it may lead to a [[WeAREStrugglingTogether conflict]] or even a flat-out [[DividedWeFall infight]] between them.

Occasionally, some villains exploit this and [[FakingAmnesia pretend they suffer from amnesia]]- amnesia]] — or even go so far as to [[MemoryGambit inflict amnesia on themselves]]- themselves]] — so they can [[FakeDefector blend with the heroes and gain their trust]].

Compare AmnesiacsAreInnocent, where amnesiac people, in general, are treated as innocent. Contrasts Contrast AmnesiacHero, where the hero suffers from amnesia, and CriminalAmnesiac, where a hero suffering from amnesia is being convinced that they're supposed to be a villain.
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* Happens temporarily in ''Manga/OnePiece'' to Charlotte "Big Mom" Linlin (or "O-Lin" as she goes by on Wano) after King sinks her ship. Without her memories, Big Mom reverts to the genuinely kind personality she had as a young child, though she keeps her monstrous strength (leading to a few hilarious moments). It doesn't last long, as her memories return when Queen sucker punches her ([[OhCrap much to the poor guy's horror]]).
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* A variation occurs in an episode of ''Series/TheOuterLimits1995''. At the beginning of the episode, an amnesiac man asks a woman for help, because he's being pursued by some [[TheMenInBlack MIBs'.]] Throughout the episode, as they're on the run he uploads some missing memories into his brain and discovers that at some point in the past [[MadScientist he had been carrying out some questionable experiments.]] As he's about to upload his final memories, the woman tells him that maybe he shouldn't upload them, that maybe he erased those memories because he didn't want to remember them anymore, and he destroys them. Just, then the [=MIBs'=] catch up to them, [[ProfessorGuineaPig and tell the man that his experiment on erasing memories was a success,]] and to go back to the lab and continue his research. When they they refuse, the [=MIB's=] overpower the couple, and the episode closes with the man having uploaded his memories and the woman strapped to a chair, begging him not experiment on her, only for him to say she should be thanking him for making her forget something she doesn't want to remember anymore.

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* A variation occurs in an ''Series/TheOuterLimits1995'' episode of ''Series/TheOuterLimits1995''."Blank Slate". At the beginning of the episode, an amnesiac man asks a woman for help, because he's being pursued by some [[TheMenInBlack MIBs'.]] Throughout the episode, as they're on the run he uploads some missing memories into his brain and discovers that at some point in the past [[MadScientist he had been carrying out some questionable experiments.]] As he's about to upload his final memories, the woman tells him that maybe he shouldn't upload them, that maybe he erased those memories because he didn't want to remember them anymore, and he destroys them. Just, then the [=MIBs'=] catch up to them, [[ProfessorGuineaPig and tell the man that his experiment on erasing memories was a success,]] and to go back to the lab and continue his research. When they they refuse, the [=MIB's=] overpower the couple, and the episode closes with the man having uploaded his memories and the woman strapped to a chair, begging him not to experiment on her, only for him to say she should be thanking him for making her forget something she doesn't want to remember anymore.
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* ''Fanfic/SuperRobotWarsGQ'': [[Anime/MobileSuitZetaGundam Sara Zabiarov]]'s only clue to her true identity is her [[HumongousMecha Bolinoak Sammahn]][[note]]''Zeta'' is in PostScriptSeason according to the series list[[/note]] and she has joined the [[Anime/MobileSuitGundamIronBloodedOrphans Turbines]] before they met Tekkadan, but she didn't become one of [[BattleHarem Naze's women]].
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* The postgame of ''[[VideoGame/PokemonMysteryDungeonExplorers Pokémon Mystery Dungeon: Explorers of Time, Darkness, and Sky]]'' has you defeat Darkrai, TheManBehindTheMan of the main plot. After his defeat, Darkrai loses his memories, and can be found wandering random dungeons where he can then be recruited into the team.

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* The postgame of ''[[VideoGame/PokemonMysteryDungeonExplorers Pokémon Mystery Dungeon: Explorers of Time, Darkness, and Sky]]'' has you defeat Darkrai, [[spoiler:Darkrai, TheManBehindTheMan of the main plot. plot.]] After his defeat, Darkrai [[spoiler:Darkrai]] loses his memories, and can be found wandering random dungeons where he can then be recruited into the team.
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* Curaçao from ''Manga/DetectiveConan''[[note]]specifically [[https://www.detectiveconanworld.com/wiki/The_Darkest_Nightmare the twentieth movie]][[/note]] was a Black Organization operative and right-hand agent of [[NumberTwo Rum]] who was responsible for the deaths of three spies in the Organization, She lost her memories


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* Curaçao from ''Manga/DetectiveConan''[[note]]specifically [[https://www.detectiveconanworld.com/wiki/The_Darkest_Nightmare the twentieth movie]][[/note]] was a Black Organization operative and right-hand agent of [[NumberTwo Rum]] who [[spoiler:who was responsible for the deaths of three spies in the Organization, Organization]]. She lost her memories

memories after being sniped off the highway while being pursued by the authorities and was found by Conan and the Detective Boys. [[BecauseYouWereNiceToMe Their decency towards her]] as she helps Conan and the Detective Boys with the case that ''she'' started convinces her to defect from the Organization for good, even after regaining her memories. [[spoiler:[[RedemptionEqualsDeath She dies saving them and other civilians from a collapsing Ferris Wheel]]]].

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Occasionally, some villains exploit this and [[FakingAmnesia pretend they suffer from amnesia]]- or even go so far as to [[MemoryGambit inflict anmesia on themselves]]- so they can [[FakeDefector blend with the heroes and gain their trust]].

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Occasionally, some villains exploit this and [[FakingAmnesia pretend they suffer from amnesia]]- or even go so far as to [[MemoryGambit inflict anmesia amnesia on themselves]]- so they can [[FakeDefector blend with the heroes and gain their trust]].


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* Curaçao from ''Manga/DetectiveConan''[[note]]specifically [[https://www.detectiveconanworld.com/wiki/The_Darkest_Nightmare the twentieth movie]][[/note]] was a Black Organization operative and right-hand agent of [[NumberTwo Rum]] who was responsible for the deaths of three spies in the Organization, She lost her memories

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* In ''WesternAnimation/{{Lolirock}}'' Praxina lost her memory during a fight, and Iris used her amnesia to try and reform her. She actually winds up succeeding, but Praxina willingly restores her memory and becomes evil again after seeing how heartbroken her brother [[IneffectualSympatheticVillain Mephisto]] was over her joining the good guys.
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* ''WesternAnimation/StevenUniverseTheMovie:'' BigBad Spinel is hit with her own rejuvenator early on in the movie, reverting her to her original form: [[spoiler:a harmless (if eccentric) playmate for Pink Diamond, now Steven.]] She sticks around with Steven for most of the movie, but unfortunately Steven needs to restore her memory to deactivate the [[HostileTerraforming injector]] she planted on Earth.

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* ''WesternAnimation/StevenUniverseTheMovie:'' BigBad Spinel is hit with her own rejuvenator early on in the movie, reverting her to her original form: [[spoiler:a harmless (if eccentric) playmate for Pink Diamond, now Steven.]] She sticks around with Steven for most of the movie, but unfortunately Steven needs to restore her memory to deactivate the [[HostileTerraforming [[DoomsdayDevice injector]] she planted on Earth.
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Sometimes, the heroes will hope that the said villain won't regain his past memories. They will actively try to stop him from remembering anything, feeding him FakeMemories, or even [[HeelFaceBrainwashing brainwashing him into becoming good]]. Taking one step further, they will even try to eliminate the villain before he can remember anything. If the heroes have different opinions on how to dispose the said villain, it may lead to a [[WeAREStrugglingTogether conflict]] or even a flat-out [[DividedWeFall infight]] between them.

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Sometimes, the heroes will hope that the said villain won't regain his past memories. They will actively try to stop him from remembering anything, feeding him FakeMemories, or even [[HeelFaceBrainwashing brainwashing him into becoming good]]. Taking one step further, they will even try to eliminate the villain before he can remember anything. If the heroes [[KillHimAlready have different opinions on how to dispose the said villain, villain]], it may lead to a [[WeAREStrugglingTogether conflict]] or even a flat-out [[DividedWeFall infight]] between them.

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Moving the entry to animated films.


* ''WesternAnimation/StevenUniverseTheMovie:'' BigBad Spinel is hit with her own rejuvenator early on in the movie, reverting her to her original form: [[spoiler:a harmless (if eccentric) playmate for Pink Diamond, now Steven.]] She sticks around with Steven for most of the movie, but unfortunately Steven needs to restore her memory to deactivate the [[HostileTerraforming injector]] she planted on Earth.



* ''WesternAnimation/StevenUniverseTheMovie:'' BigBad Spinel is hit with her own rejuvenator early on in the movie, reverting her to her original form: [[spoiler:a harmless (if eccentric) playmate for Pink Diamond, now Steven.]] She sticks around with Steven for most of the movie, but unfortunately Steven needs to restore her memory to deactivate the [[HostileTerraforming injector]] she planted on Earth.
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* ''WesternAnimation/StevenUniverseTheMovie:'' BigBad Spinel is hit with her own rejuvenator early on in the movie, reverting her to her original form: [[spoiler:a harmless (if eccentric) playmate for Pink Diamond, now Steven.]] She sticks around with Steven for most of the movie, but unfortunately Steven needs to restore her memory to deactivate the [[HostileTerraforming injector]] she planted on Earth.
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None

Added DiffLines:

* The postgame of ''[[VideoGame/PokemonMysteryDungeonExplorers Pokémon Mystery Dungeon: Explorers of Time, Darkness, and Sky]]'' has you defeat Darkrai, TheManBehindTheMan of the main plot. After his defeat, Darkrai loses his memories, and can be found wandering random dungeons where he can then be recruited into the team.
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# The villain [[HeelRealization realizes the damage he had done]] and decides to pull a genuine HeelFaceTurn to redeem himself.

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# The villain [[HeelRealization realizes the damage he had done]] and decides to pull a genuine fully-conscious HeelFaceTurn to redeem himself.
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* ''VideoGame/AgarestSenki'': [[spoiler:Vashtor]] is the second-in-command of the armies of darkness. However, after his defeat at [[spoiler:the end of chapter one, he falls off a cliff]] and gets washed ashore on a different continent with none of his memories. After that, the heroes stumble upon him and nurse him back to health, not knowing his true identity. He then joins the heroes in their fight against the darkness, becoming a party member in the process. [[spoiler:He does betray the heroes once he regains his memories, but you still have a chance to redeem him later.]]

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* ''VideoGame/AgarestSenki'': [[spoiler:Vashtor]] is the second-in-command of the armies of darkness. However, after his defeat at [[spoiler:the end of chapter one, the First Generation, he falls is thrust off a cliff]] and gets washed ashore on a different continent with none of his memories. After that, the heroes stumble upon him and nurse him back to health, not knowing his true identity. He then joins the heroes in their fight against the darkness, becoming a party member in the process. [[spoiler:He does betray the heroes once he regains his memories, but you still have a chance to redeem him later.]]
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* ZigZagged with Jellal in ''Manga/FairyTail'', who was merely BrainwashedAndCrazy before getting amnesia, and assists the heroes to atone for the things he did as a villain. But when he regains his memories of [[TheHero Natsu]], the one who defeated him, it appears that Jellal has slipped back into his evil ways until he delivers him a PowerUp, proving that he's truly on the heroes' side, and stays that way once his memories fully return.
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* ''VideoGame/AgarestSenki'': [[spoiler:Vashtor]] is the second-in-command of the armies of darkness. However, after his defeat at [[spoiler:the end of chapter one, he falls off a cliff]] and gets washed ashore on a different continent with none of his memories. After that, the heroes stumble upon him and nurse him back to health, not knowing his true identity. He then joins the heroes in their fight against the darkness, becoming a party member in the process. [[spoiler:He does betray the heroes once he regains his memories, but you still have a chance to redeem him later.]]
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[[folder:Asian Animation]]
* ''Animation/HappyHeroes'' has at least two examples.
** The first couple of episodes of Season 2 (which form a MultiPartEpisode) inverts this trope by having Careful S., one of the heroes, lose his memory and end up working for the villains Big M. and Little M.
** Speaking of Big M., episode 50 of that same season plays the trope straight by having him forget he's a villain and help the heroes defeat a shark that he himself sent out earlier.
[[/folder]]
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[[folder:Live Action TV]]
* A variation occurs in an episode of ''Series/TheOuterLimits1995''. At the beginning of the episode, an amnesiac man asks a woman for help, because he's being pursued by some [[TheMenInBlack MIBs'.]] Throughout the episode, as they're on the run he uploads some missing memories into his brain and discovers that at some point in the past [[MadScientist he had been carrying out some questionable experiments.]] As he's about to upload his final memories, the woman tells him that maybe he shouldn't upload them, that maybe he erased those memories because he didn't want to remember them anymore, and he destroys them. Just, then the [=MIBs'=] catch up to them, [[ProfessorGuineaPig and tell the man that his experiment on erasing memories was a success,]] and to go back to the lab and continue his research. When they they refuse, the [=MIB's=] overpower the couple, and the episode closes with the man having uploaded his memories and the woman strapped to a chair, begging him not experiment on her, only for him to say she should be thanking him for making her forget something she doesn't want to remember anymore.
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* [[KnightErrant Perceval]], a Dark-type [[LivingWeapon Blade]] that can join your party in ''VideoGame/XenobladeChronicles2'', is revealed to have previously been a [[BloodKnight ruthless assassin]] before having resonated with his current Driver. However, Blades do not retain any memory of their former 'lives' under different Drivers, and, this time around, he operates under a strict ThouShaltNotKill policy (though he is nevertheless devout in his efforts to punish evildoers).
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* In ''VideoGame/SuperRobotWarsAdvance'', Axel Almer was an AcePilot of the invading Shadow-Mirror army, but lost his memories in the transition to the heroes' dimension and got picked up by them first.
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[[folder:FanWorks]]
* ''Fanfic/ThePhoenix'' has this as its premise. Zuko, having been scarred and banished by his father the Fire Lord, ends up nearly drowning with a head-injury saving one of his crewmen during a storm. He washes ashore with amnesia and is found by Team Avatar, the very group he was looking for for all of these years. He joins them, unaware of his past or mission, and by the time he remembers who he is, he has decided that helping the Avatar defeat his father would be the best course action for everybody.
[[/folder]]
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Occasionally, some villains exploit this and [[FakingAmnesia pretend they suffer from amnesia]] so they can [[FakeDefector blend with the heroes and gain their trust]].

to:

Occasionally, some villains exploit this and [[FakingAmnesia pretend they suffer from amnesia]] amnesia]]- or even go so far as to [[MemoryGambit inflict anmesia on themselves]]- so they can [[FakeDefector blend with the heroes and gain their trust]].

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Compare AmnesiacsAreInnocent, where amnesiac people in general are treated as innocent. Contrasts AmnesiacHero, where the hero suffers from amnesia, and CriminalAmnesiac, where a hero suffering from amnesia is being convinced that they're supposed to be a villain.

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Compare AmnesiacsAreInnocent, where amnesiac people people, in general general, are treated as innocent. Contrasts AmnesiacHero, where the hero suffers from amnesia, and CriminalAmnesiac, where a hero suffering from amnesia is being convinced that they're supposed to be a villain.



* At the end of ''WesternAnimation/KuboAndTheTwoStrings'', after [[spoiler:the Moon King/Raiden]] is brought down into human form, he loses all memory of who he is or any of the things he's done, despite having tried to kill Kubo only minutes earlier. Despite this, Kubo and the townspeople decide to respect [[spoiler:Raiden]] and tell him that he was a great person. He is very happy to hear this, and decides to devote himself to "continuing" his generous lifestyle.

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* At the end of ''WesternAnimation/KuboAndTheTwoStrings'', after [[spoiler:the Moon King/Raiden]] is brought down into human form, he loses all memory of who he is or any of the things he's done, despite having tried to kill Kubo only minutes earlier. Despite this, Kubo and the townspeople decide to respect [[spoiler:Raiden]] and tell him that he was a great person. He is very happy to hear this, this and decides to devote himself to "continuing" his generous lifestyle.



* In the ''WesternAnimation/AdventuresOfSonicTheHedgehog'' episode, "Blank-Headed Eagle", Scratch chases after Sonic with an Eagle-Copter kit he ordered from watching the ''[[ShowWithinAShow Edgar Eagle]]'' TV show. After Sonic tricks him into shooting himself out of the sky, Scratch gets amnesia, and when Henrietta Peck finds him, Scratch thinks he's Edgar Eagle. Sonic takes advantage of this, and uses Scratch to help him save Farmer Peck's farm from destruction from Dr. Robotnik's machines. [[StatusQuoIsGod Scratch ends up regaining his memories near the end of the episode]].

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* In the ''WesternAnimation/AdventuresOfSonicTheHedgehog'' episode, "Blank-Headed Eagle", Scratch chases after Sonic with an Eagle-Copter kit he ordered from watching the ''[[ShowWithinAShow Edgar Eagle]]'' TV show. After Sonic tricks him into shooting himself out of the sky, Scratch gets amnesia, and when Henrietta Peck finds him, Scratch thinks he's Edgar Eagle. Sonic takes advantage of this, this and uses Scratch to help him save Farmer Peck's farm from destruction from Dr. Robotnik's machines. [[StatusQuoIsGod Scratch ends up regaining his memories near the end of the episode]].


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* In the ''WesternAnimation/SkylandersAcademy'' episode "Sheep(ball) Dreams", the Skylanders attempt to have an amnesiac Dreamcatcher leave the Doom Raiders and rejoin them.

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[[folder:Film - Animated]]

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[[folder:Film]]
* ''ClassOfTheTitans'': After BigBad Cronus and all the team fall into the River Lethe and lose their memories, Cronus becomes totally amicable and joins the gang in trying to work out what's going on.

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[[folder:Film]]
* ''ClassOfTheTitans'': After BigBad Cronus and all the team fall into the River Lethe and lose their memories, Cronus becomes totally amicable and joins the gang in trying to work out what's going on.
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[[folder:WesternAnimation]]

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[[folder:WesternAnimation]][[folder:Western Animation]]


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* ''WesternAnimation/ClassOfTheTitans'': After BigBad Cronus and all the team fall into the River Lethe and lose their memories, Cronus becomes totally amicable and joins the gang in trying to work out what's going on.
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P.S. Needs more examples and better description.
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Created from YKTTW

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He used to be a villain, and he's now working for the heroes. However, the only reason he's in the good side or at least being friendly to the heroes is because [[IdentityAmnesia he forgot his own identity and his past]], and that he's supposed to be the enemy of the heroes.

If the villain remembers his past he will suffer from an identity crisis, [[AmnesiacDissonance questioning his real identity]], which may lead to several outcomes:
# The villain suffers from a mental breakdown.
# The villain immediately [[FaceHeelTurn becomes evil again]] and turns against the heroes.
# The villain [[HeelRealization realizes the damage he had done]] and decides to pull a genuine HeelFaceTurn to redeem himself.

In some cases, especially if the amnesia happens toward the very end, the villain would never be able to remember his past, and this is often being considered to be a makeshift HeelFaceTurn due to [[AmnesiacsAreInnocent amnesiac people are often treated as harmless, innocent people]]. Often a cause of RelationshipReboot, as long as the villain in question stays amnesiac.

There are several factors that can affect the outcome. If the villain in question is treated with kindness by the heroes, he may take ThePowerOfFriendship into consideration, especially if he never felt love and friendship before. If he's treated badly by the heroes, either because [[ReformedButRejected they're not convinced that he's now on their side]] or by one person who [[AccuserOfTheBrethren repeatedly rejects his attempts to do good]], he may decide that it's better off to stay evil, sometimes [[ThenLetMeBeEvil becoming what exactly they accused him for]]. In some cases, the villain will stay evil [[UndyingLoyalty out of loyalty to his own organization]], refusing to betray the other villains who trusted him. Last but not least, whether the villain would [[HeelRealization realize his past deed was damaging]].

Sometimes, the heroes will hope that the said villain won't regain his past memories. They will actively try to stop him from remembering anything, feeding him FakeMemories, or even [[HeelFaceBrainwashing brainwashing him into becoming good]]. Taking one step further, they will even try to eliminate the villain before he can remember anything. If the heroes have different opinions on how to dispose the said villain, it may lead to a [[WeAREStrugglingTogether conflict]] or even a flat-out [[DividedWeFall infight]] between them.

Occasionally, some villains exploit this and [[FakingAmnesia pretend they suffer from amnesia]] so they can [[FakeDefector blend with the heroes and gain their trust]].

Compare AmnesiacsAreInnocent, where amnesiac people in general are treated as innocent. Contrasts AmnesiacHero, where the hero suffers from amnesia, and CriminalAmnesiac, where a hero suffering from amnesia is being convinced that they're supposed to be a villain.

P.S. Needs more examples and better description.

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!!Examples

[[foldercontrol]]

[[folder:Anime & Manga]]
* Light Yagami of ''Manga/DeathNote'' does this as part of his MemoryGambit, having given up his memories of being Kira and joining the Kira taskforce, even working together with his nemesis L. Light without the Death Note is actually a pretty decent guy, but we know that this cannot last, and sure enough, after a very convoluted GambitRoulette, Light reclaims the Death Note and regains his memories and everything goes to hell.
[[/folder]]

[[folder:Film]]
* ''ClassOfTheTitans'': After BigBad Cronus and all the team fall into the River Lethe and lose their memories, Cronus becomes totally amicable and joins the gang in trying to work out what's going on.
* At the end of ''WesternAnimation/KuboAndTheTwoStrings'', after [[spoiler:the Moon King/Raiden]] is brought down into human form, he loses all memory of who he is or any of the things he's done, despite having tried to kill Kubo only minutes earlier. Despite this, Kubo and the townspeople decide to respect [[spoiler:Raiden]] and tell him that he was a great person. He is very happy to hear this, and decides to devote himself to "continuing" his generous lifestyle.
[[/folder]]

[[folder:Video Games]]
* This is part of TheReveal in ''VideoGame/KnightsOfTheOldRepublic'': [[spoiler: the {{player character}} is actually [[PredecessorVillain Darth Revan]], who had his/her mind wiped by the Jedi Council to ensure that (s)he would no longer be a threat to the galaxy. Following this, the player can decide whether to remain heroic or else take over as the new Dark Lord of the Sith.]]
* ''Franchise/MortalKombat'': Before the events of ''VideoGame/MortalKombat3''. Kabal was a member of Black Dragon who was victim of Shao Kahn's extermination forces and left for dead. He was disfigured, the reason why he has to use a gas mask permanently, and with his memories gone joining to Earthrealm forces against Shao Kahn. He eventually regained his memories after [=MK3=], as seen in his next appearance in ''VideoGame/MortalKombatDeception'', in which he not just comes back to Black Dragon clan, he also wants to remake the organization from the ashes.
* The twist of the emotional rollercoaster known as ''VideoGame/MySims [=SkyHeroes=]'' is that the player character used to be the chief enforcer for the evil Morcubus, before getting shot out of the sky and left amnesiac to be unwittingly picked up by the resistance against Morcubus.
[[/folder]]

[[folder:WesternAnimation]]
* In the ''WesternAnimation/AdventuresOfSonicTheHedgehog'' episode, "Blank-Headed Eagle", Scratch chases after Sonic with an Eagle-Copter kit he ordered from watching the ''[[ShowWithinAShow Edgar Eagle]]'' TV show. After Sonic tricks him into shooting himself out of the sky, Scratch gets amnesia, and when Henrietta Peck finds him, Scratch thinks he's Edgar Eagle. Sonic takes advantage of this, and uses Scratch to help him save Farmer Peck's farm from destruction from Dr. Robotnik's machines. [[StatusQuoIsGod Scratch ends up regaining his memories near the end of the episode]].
* ''WesternAnimation/XiaolinShowdown'': The Season 2 finale has [[RobotMaster Jack Spicer]] accidentally turn himself good when he brought the Reversing Mirror into the Yin Yang World, reversing his own spirit in the process. He remains with the heroes until needing to enter the Yin Yang World again, resetting his spirit back to evil (but not before creating a good clone of himself in the meantime.)
[[/folder]]

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