History AdaptationalVillainy / AnimeAndManga

** While Light Yagami was always a VillainProtagonist in the anime and manga, he started out sympathetic and [[WellIntentionedExtremist well-intentioned]]. In the live-action films, he ends up JumpingOffTheSlipperySlope much sooner than in the anime and manga, to the extent that unlike his anime/manga counterpart, he's perfectly willing to personally kill his ''own father'' to prevent the Death Note from being analyzed.

* ''Anime/DoraemonNobitasDorabianNights'' sees the gang entering the world of the Arabian Nights, and encountering various characters from the Arabian Nights Tales. Cassim from ''Literature/AliBabaAndTheFortyThieves'' is notably depicted as the thieves' ''leader'', as opposed to being victimized by them.
* ''Anime/DoraemonNobitaInTheWanNyanSpacetimeOdyssey'' is an AdaptationExpansion of a manga story where Nobita and friends adopts numerous cats and dogs and delivering to the past to create their own utopia. The animals are neutral in the original story, but in the anime several of the [[CatsAreMean cats]] then plots to take over humanity in the future as retaliation of their abandonment.

** Many of the Gym Leaders and Elite Four members. While most of them (with the exception of Giovanni and Malva) are good guys in the games -- Lance and Lorelei even helping out the player character at key points, many of them are hit with this trope. Lt. Surge, Koga, and Sabrina, three Kanto gym leaders, are a TerribleTrio of lieutenants serving directly under Giovanni (and Blaine, another Kanto gym leader, was a former Team Rocket operative involved in Mewtwo's creation who had a HeelFaceTurn during the first arc), Agatha, Bruno, Lorelei, and Lance, all four members of the Kanto Elite Four, are [[WellIntentionedExtremist Well-Intentioned Extremists]] part of a plot to kill all other humans in favor of Pokemon (though Bruno's involvement was more forced, as he had controlling cuffs on his body similar to those on Agatha's Pokemon), Karen and Will, the two new characters introduced for the Johto Elite Four, are members of Neo Team Rocket, and [[spoiler: Pryce, a Johto gym leader, kidnapped many children, including Green and Silver, raising them to do bad, and was the founder of Neo Team Rocket, who wanted to use Lugia, Ho-Oh, and Celebi to eventually travel back in time and [[AntiVillain save his two Lapras from being killed by a collapsing ice formation]]]]. [[spoiler:They and and most of the other characters listed [[HeelFaceTurn reform]] later on, with the exception of Agatha.]]

** While Tingle did try to steal Force Gems in ''VideoGame/TheLegendOfZeldaFourSwordsAdventures'', his [[Manga/TheLegendOfZeldaFourSwords2004 manga counterpart]] outright leaves Green to die at the hands of a Hinox to get away with a Force Gem.
** In ''VideoGame/TheLegendOfZeldaPhantomHourglass'', Bellum is a mindless EldritchAbomination that feeds on people the way a predator feeds on prey. In the manga adaptation, he is intelligent and fully aware of the pain he puts his victims through.

* [[TricksterMentor Cross Marian]] of ''Manga/DGrayMan''. In the manga, he was just pretending to be a jerk at best, or a JerkWithAHeartOfGold at worst. But the anime, done by TMS Entertainment, decided that they wanted him to be a complete JerkAss. Episode 27: My Master, General Cross is infamous for the villainization of Cross' character -- when Allen begins to tell Lenalee tales of how horrible his master is, so she'll know what to expect when they find him. The includes things from Cross that actually contradicted his manga characterization and WordOfGod.
** In the aforementioned episode, Cross is shown forcing Allen into slave labor to make money, whereas in the manga, Allen only gambled to make money. Also, in canon Allen mentioned he only gambled if he and Cross were very broke. But in the episode, Cross forces Allen to gamble and steals his money when he's living off of a rich lover at the time. Allen mentions that his master was lover to a Maharajah's widow because he has a thing for rich women. WordOfGod however, has stated that Cross likes good women, not rich women. We also see Cross telling Allen to bring him a lion, which almost gets Allen killed, in addition to throwing Allen to legions of Akuma without training him. And Allen mentions that given Cross' treatment of him, he battled with depression as a result, only finding happiness with Narain, a friend he met in India.

** Changes were also made to canon scenes where Cross is shown doing things in them that weren't in the manga. Such as the guards dragging Allen out of Cross' room at HQ. In the manga, Cross just watches as Allen is taken away. However in the anime, he smirks and hums mockingly while waving Allen off. In addition to stealing food from the cart of the vendor he spoke to in Krory's village -- which he wasn't shown doing in the manga.

** Finally, both anime adaptations have a habit of changing Cross' facial expressions to include him smirking or scowling when he wasn't in the manga. One such example includes Hallow's episode 13, which adapts the flashback chapter 206, with Cross caring for young Allen. In the manga, toward the end, we see Cross sitting with Allen in the bedroom, and he has a sad expression on his face as he watches the traumatized Allen. In the anime's episode, [[http://ic.pics.livejournal.com/silverfang2/29185537/933115/933115_original.png Cross is shown watching Allen with a scowl on his face instead.]]

* The [[Literature/AliceInWonderland Cheshire Cat]] in the manga adaptation of the ''Franchise/KingdomHearts'' series is outright villainous, compared to his more neutral role in his origin book and in the game. Maleficent even offered him a place in her group, but he declined.
** He's at his worst in the manga adaptation for ''Manga/KingdomHearts358DaysOver2'': Roxas wished to be let out of a cage he was imprisoned in for trespassing the White Rabbit's house and pretending to be his servant, Mary Ann. The Cheshire Cat granted his wish by [[JackassGenie throwing a hedgehog at the Queen of Hearts]] and [[MoralEventHorizon framing Roxas for the crime]], causing her to order the young Nobody's execution by [[OffWithHisHead guillotine]].

%% Team Flare in the ''XY and Z'' arc are more sinister and dangerous than their game iterations. In particular, Lysandre's history with Professor Sycamore and his backstory in the games as the descendant of AZ's brother and a FallenHero are not touched on, and in the games Xerosic eventually pulls a postgame HeelFaceTurn under the influence of [[MoralityPet Emma]], a girl who befriends him. Lysandre, originally more of a WellIntentionedExtremist in the games, is more than willing to lay waste to Lumiose City to accomplish his goals in the Team Flare Crisis arc, and when his plan is initially stopped, becomes an insane OmnicidalManiac who intends to destroy the world as revenge against the heroes. As for Xerosic, who depending on the outcome of the SadisticChoice he gave the player [[MortonsFork activates Lysandre's weapon anyway]] regardless of choice, and made Emma attack people unconsciously via a suit he put her in prior to his HeelFaceTurn, is not above [[WouldHurtAChild harming Clemont]] for the sake of science in his appearances, with him seeking vengeance against him for stopping his plans at Prism Tower, and while his last scene hints that he ''might'' make a HeelFaceTurn yet, we never actually get to see this happen.

* Naoka Ueno in the [[Anime/ASilentVoice anime]] adaptation of ''Manga/ASilentVoice''. While she is still an AlphaBitch in the manga who has numerous KickTheDog moments towards Shouko Nishimiya ([[BullyingTheDisabled who’s deaf]]) the anime due to being a CompressedAdaptation doesn’t explain Ueno‘s FreudianExcuse from the manga. [[spoiler: That being she has been helplessly in love with the protagonist Shoya Ishida for years and is [[GreenEyedMonster dreadfully]] [[ClingyJealousGirl jealous]] of his blooming relationship with Shouko whom she perceives as having stolen Shoya from her.]] This ties into the manga’s overarching themes about [[LoveRedeems love redeeming]], {{forgiveness}} and how even the cruelest people having to capacity [[TookALevelInKindness for good and change]]. However since the anime [[AdaptedOut cuts out]] Ueno’s perspective and only vaguely hints towards her crush [[spoiler:for Shoya]], it just seemed like Ueno was just being a bullying bitch to Shouko, because she blamed her for the events which split up her friendship group in elementary school.
** [[PlayedWith On the other hand]], the anime does give Ueno some [[AdaptationalNiceGuy Adaptational Nice Girl]] as she actually learns sign language to talk to Shouko, which she refused to do in the manga. [[spoiler: Also the bit where Ueno makes out with Shoya [[DudeShesLikeInAComa while he’s comatose]] is removed from the anime.]]

** Also, in the [[Manga/YuGiOhGX manga version]], Jim Crocodile Cook is an antagonist who is far more malicious than his lighthearted and benign anime counterpart. In addition, unlike the other American students, he's well aware of Tragoedia and is working for him willingly.
** Like Daitokuji-sensei above, Yubel also got subjected to this in the dub. While she was still a terrifying villain in the original with ''many'' horrible deeds under her belt, she was ultimately motivated by [[LoveMakesYouEvil her love for Judai]] [[LoveMakesYouCrazy and her desire for him to]] [[ForgottenChildhoodFriend remember her]]. The dub turned her into a straight-up psychopath who wanted to "[[BreakTheCutie play]]" with him, and because it cut out Season 4, she never had her HeelFaceTurn.

** A few Gym Leaders aren't as nice as their game counterparts. CreepyGood Sabrina is converted into something of an antagonist while many others, most notably Lt. Surge, Erika, and Skyla, are egotistical {{Jerkass}}es with a condescending demeanor towards their challengers (or, in Erika's case, towards those who don't appreciate the perfume her gym makes, though this attitude is more seen in her employees than her herself). Pryce is a JerkWithAHeartOfGold who is cold towards Pokémon due to a misunderstanding with his Piloswine long ago, where he thought it abandoned him, although he ''does'' get better when the Piloswine is found and the situation explained (it was frozen while trying to heal him). In particular, Sabrina in the games is implied to be a good-natured person who happens to have [[CreepyGood frightening powers]], Pryce is a perfectly pleasant and decent man, and Lt. Surge, while cocky in the games, isn't nearly as mean about it as he is in the anime. All of them [[DefeatEqualsFriendship make friends with the heroes]] in the end. However, others, like Brock, Misty, Cilan, Iris, and Clemont, join Ash as protagonists and are more openly heroic characters.

** In ''Anime/StreetFighterAlphaTheAnimation'' gives this treatment to Zangief, much like Film/StreetFighter did beforehand. In the games, Zangief, while HotBlooded, is nonetheless a GentleGiant, a FriendToAllChildren, and even TheBigGuy for the World Warriors by the time of ''VideoGame/StreetFighterV''. In ''Alpha The Animation'' he's nothing more than a snarling dumb brute who ruthlessly [[WouldHurtAChild beats the life out of Shun a small boy]], something his game counterpart would never do.

* In ''Anime/StreetFighterAlphaTheAnimation'' gives this treatment to Zangief [[Film/StreetFighter once again]], in the games Zangief while HotBlooded is a GentleGiant, a FriendToAllChildren and even TheBigGuy for the World Warriors by the time of ''VideoGame/StreetFighterV''. In ''Alpha The Animation'' he's nothing more than a snarling dumb brute who ruthlessly [[WouldHurtAChild beats the life out of Shun a small boy]] something his game counterpart would never do.

* ''Manga/TheLegendOfZeldaAkiraHimekawa'': The Happy Mask Salesman is implied to have a little more to do with the events of the story than in the game.

** PlayedForLaughs but the Mugiwara Theatre Omakes have members of the usual heroic Straw Hats be villainous characters. In “Chopper Man” Usopp is a moustache twirling MadScientist and Zoro, Sanji and Robin are his henchmen, Luffy (who’s HumongousMecha) is his SecretWeapon but joins Chopper Man’s side. In “Space Time” Sanji and Zoro are evil [[GalacticConqueror aliens conquerors]] based off TheEmpire from ''Franchise/StarWars'' and are trying to take over the moon. In “Detective Loomes” Zoro, Nami, Sanji, Chopper, Robin and Franky are murder suspects all based on different [[SerialKiller serial killers]]. In “RPG Time” Brook, Chopper, Franky, Nami and Sanji are villains all based on different [[TableTopRPG RPG]] monsters.

* In ''Anime/StreetFighterAlphaTheAnimation'' gives this treatment to Zangief [[Film/StreetFighterTheMovie once again]], in the games Zangief while HotBlooded is a GentleGiant, a FriendToAllChildren and even TheBigGuy for the World Warriors by the time of ''VideoGame/StreetFighterV''. In ''Alpha The Animation'' he's nothing more than a snarling dumb brute who ruthlessly [[WouldHurtAChild beats the life out of Shun a small boy]] something his game counterpart would never do.

* Kaede Fuyou from ''VisualNovel/{{Shuffle}}''. While ''not'' exactly a villainess, she did, in both versions, believe that Rin was responsible for her mother's death (a misconception he encouraged to prevent her from losing the will to live), and abused him for years until learning the truth, at which point she devoted herself to him in order to atone. In the anime, in which Rin canonically goes out with their mutual friend and [[SenpaiKohai senpai]], Asa, resulting in him spending less time with Kaede (in part not wanting her to be consumed with him), she snaps and attacks Asa, causing her to collapse, but comes to regret this later. In the visual novel, after finding out that Rin and Asa are a couple, Asa apologizes, but Kaede sadly accepts their relationship, albeit with the scene being somewhat similar to Kaede and Asa's reconciliation from the anime.

* ''Anime/HyperdimensionNeptuniaTheAnimation'': Zig-Zagged with The Seven Sages. In ''VideoGame/HyperdimensionNeptuniaVictory'', they were a criminal organization ruled by Rei Ryghts who attempted to get rid of the goddesses and specialized in [[WouldHurtAChild turning children into monsters]], but were overall AffablyEvil {{Noble Demon}}s who had their PetTheDog moments [[note]] Rei was a BenevolentBoss to the other Sages despite her meekness, Mr. Badd's reasoning to turn the children into untrained beasts was that he wanted a family of his own, and Anonydeath, despite being a {{troll}}, didn't actually hate the [=CPUs=], only joining the agency because he found it interesting [[/note]] or weren't really bad guys at all [[note]] Abnes was merely misled, Copypaste was a mindless [[TheBrute brute]] but still had a heart and became a friendly GentleGiant after being rebuilt, and Warechu was a HarmlessVillain at best who only wanted others to respect him [[/note]], especially when compared to [[PoliteVillainsRudeHeroes the goddesses]]. Near the end of the game, [[spoiler:they were able to [[HeelFaceTurn redeem themselves]] into a group dedicated to supporting the goddesses]]. In the anime, likely due to [[AdaptationalNiceGuy the CPUs themselves being leagues more likable here]] (especially Iris Heart), the Seven Sages are conversely made more threatening, antagonistic, and hostile to the goddesses. At the same time, Abnes is revealed to not be apart of the Seven Sages while Arfoire, who is portrayed as a legit bad guy instead of TheChewToy she was in ''Victory'', gets a does of AdaptationalHeroism by [[spoiler: taking away Rei's powers and admits to the goddesses that [[EvenEvilHasStandards even though she hates them, she doesn't want the world to be destroyed]].]]