History SuperpoweredEvilSide / VideoGames

** VideoGame/Kura5BondsOfTheUndying has a subversion. At one point, vampiric deuteragonist Emil undergoes a transformation into a bird-like beast and attacks his partner, Annie. Despite that, the form itself is never treated as sinister and instead the violence following the transformation is a result of his present irritable mental state.

* In ''VideoGame/MetalGearRisingRevengeance'', Raiden recovers from a devastating HeroicBSOD by tapping into his "Jack the Ripper" ChildSoldier personality, turning him into an AxCrazy [[TheBerserker berserker]] who [[CombatSadomasochist takes joy in both inflicting and recieving pain]]. After the ensuing fight, Raiden can use [[SuperMode Ripper Mode]] whenever his Blade Mode Gauge is full, increasing his attack power greatly at the cost of constant Blade Mode Gauge drain.

* Dark Spyro in ''VideoGame/TheLegendOfSpyro'' series is ExactlyWhatItSaysOnTheTin; Spyro's eyes turn white and his body gets covered in a flowing dark energy ([[ScrappyMechanic that has a habit of clouding up the camera when gliding]]) and gives Spyro the [[GameBreaker fury element]]. It gets triggered when Spyro is overwhelmed in sadness, anger, or just a plain ol' HeroicBSOD. However, in ''The Eternal Night'' you can flicker it on and off at will in NewGamePlus ([[ChangingClothesIsAFreeAction even in cutscenes!]]). He's shown to mostly have control over it though, as seen in ''Dawn of the Dragon''.

* Iori Yagami in ''VideoGame/TheKingOfFighters'' is normally amoral, and (judging from his winposes) has quite a few screws loose. Riot of the Blood Iori, however, has absolutely no sense of self-restraint and will attack anything on sight.

* So, in ''VideoGame/MarySkelterNightmares'', the Blood Maidens have the ability to go into a so called "Massacre Mode" ("Genocide" in the original Japanese version), which is ''kinda'' like one of these, making them far more powerful and aggressive when coming into contact with large amounts of Marchen blood. However, said monster blood, along with mental stress, builds up a form of corruption, and if it becomes too great, they will enter their ''real'' Superpowered Evil Side, [[TheBerserker Blood Skelter]], which makes them go ''completely AxCrazy'', communicating solely in pained screams and [[LaughingMad some of the most insane laughter you've ever heard]]. Good thing Jack's around to keep them out of it.

* In ''VideoGame/TheWorldEndsWithYou'', the BonusBoss is the Noise form of [[spoiler:Hanekoma]], and since he ''really'' kills you if you lose, it can be seen as this. The fact that, during the fight, he [[spoiler:spews his human form's inspirational phrases like battle cries]] could show that he's not quite in control.

** As said in comics, any game that has the option of the black suit has it as this. In games such as ''Spider-Man 3'' and ''VideoGame/SpiderManWebOfShadows'', his attacks become more violent and aggressive, usually with CombatTentacles and spike tendrils.

* Almost every member of the Mishima family in the ''VideoGame/{{Tekken}}'' series is affected by the Devil's Blood, a curse that while it makes them stronger and grants them demonic powers, at cost of their humanity. Also Ogre/True Ogre. The Devil's blood affects the personality of those inflicted, and it's virulent where the host struggles to keep control.

** Kazuya Mishima was originally stricken when he thrown off the cliff by his father in order to survive. Originally, Kazuya was a good man with a kind heart, but the Devil's blood slowly consumed him, until Jun Kazama awakened in Kazuya his good side that fought off his demonic side. After ''VideoGame/Tekken2'', though, Kazuya's good side is suppressed by the Devil's blood and Kazuya made an agreement with it and he's able to control the form as he pleases. A shred of his humanity can be seen in his ''VideoGame/Tekken5'' ending where he defeats his grandfather and holds him in his arms, smiling at him and remembering his few happy childhood moments, before the Devil's blood takes control and kills him.