History Main / TranshumanTreachery

* This happens in the anime ''Manga/{{Claymore}}'' as soon as a warriorness loses control of her demonic powers and transforms into an [[FaceMonsterTurn Awakened Being]]. The Awakened Beings are immediately evil and eat human guts. However, later in the plot, it turns out that not all Awakened Beings are completely evil.

* It happens regularly with [[OurVampiresAreDifferent Dead Apostles]]: no matter if they turn on their own with the use of magecraft or are turned by the bite of another Dead Apostle, a True Ancestor or even [[EldritchAbomination Brunestud of the Crimson Moon]] itself, by the time the process ends they see themselves as superior to humanity (or saw the Dead Apostle as superior even ''before'', in the case of those who turned themselves) and have no problem at feeding on them. So far, there are only five {{Subversion}}s: Zelretch, Merem Solomon and [[spoiler: Satsuki]] were powerful enough to skip the usual long and torturing process and their personalities remained the same (even Merem Solomon's adoration of Brunestud fits in, as [[BecauseYouWereNiceToMe it was the only one to treat him as a person and turned him as an act of mercy, even giving him a few pointers to better live as a Dead Apostle]]), Gransurg Blackmoore was a human who had decided to serve Brunestud after being crushed by him in battle and turned himself because it would be more appropriate, and Enhance {{Defied}} this by [[HeroicWillpower willing himself into retaining most of his humanity]] before starting to hunt down the other Dead Apostles.

* ''WesternAnimation/AdventureTime'': [[MadScientist Dr. Gross]] describes herself as Human+ and believes that the next logical step from glasses and artificial hearts is scissor hands and telescoping spider legs. Her ultimate plan is to build a hybrid army, return to Founder's Island, [[UnwittingRoboticisation and forcibly convert everyone there into cyborgs.]]

** By the end of the plot of [[VideoGame/StarCraftIIHeartOfTheSwarm Heart of the Swarm]], it's become complicated. [[spoiler: The [[{{Precursors}} Xel'Naga]] began molding both the Protoss and the Zerg into what they are now, apparently because it's just how their species perpetuate themselves. But their work on the Zerg was subverted by Amon, the Dark Voice, who gave the Zerg a biological imperative to obey him and destroy the Protoss. The Overmind freed the Zerg from that by [[ThanatosGambit getting himself killed]] so Kerrigan could take over. But it turns out that even when freed from Amon's influence, the Zerg are still a HordeOfAlienLocusts. Once freed, Kerrigan is relatively humane and an AntiVillain, but still more inhuman than she was before.]]

* ''VideoGame/{{Starcraft}}'': Kerrigan is Queen Bitch of this trope. At first, she's somewhat mind controlled, yes, but also fairly autonomous. And then she's entirely autonomous and sells out the human race to lead the Zerg. She seemed slightly sad about trying to kill Raynor out but she got better. [[AllThereInTheManual Apparently]] tied to the ''very'' nasty [[FreudianExcuse mental conditioning and childhood]] she had.
** When she infests [[spoiler: Ethan Stewart]], he becomes an intelligent and fairly free-willed Zerg-Terran (and she knows it, so she threatens him if he ever turns against her). He immediately falls in love with her and follows her orders and does everything to gain her approval. [[spoiler: It doesn't work.]] ''{{VideoGame/StarcraftII}}'' goes into a bit more detail, and the Zerg Campaign will likely go into more...

* ''WesternAnimation/TheSimpsons'' Treehouse of Horror IV has the segment, ''Bart Simpson's Dracula'' in which Bart gets captured by Burns and bitten. Later that evening, he visits Lisa's outside her bedroom with a few other kids he's turned and tries to convince Lisa to let him bite her.

If this FaceHeelTurn is too quick, it gives the impression that some other trope is at work, like TheDarkSide, or WithGreatPowerComesGreatInsanity. However, this trope may be justified a couple of ways. If TheMindIsAPlaythingOfTheBody it doesn't matter that vampire Dan doesn't want to drink human blood, [[SlidingScaleOfVampireFriendliness he has to]], and trying to be [[FriendlyNeighborhoodVampire friendly]] won't last. Alternately, someone seeking the CurseThatCures may make the painful choice to switch sides to save their life. If the setting has an ongoing "[[FantasticRacism race war]]" against what the character has become if they don't join their new race they'll quickly face death. However, most of the time the switch in alliances comes about with alarming speed and lack of concern. At best you'll see these {{Big Bad Friend}}s offer the transformation to a friend or loved one... and kill them if they refuse. TheDarkSide, [[EvilTastesGood they have cookies.]] The justification may be simply that vampires, etc., are AlwaysChaoticEvil, though many people don't see the concept of AlwaysChaoticEvil itself as justifying things because they think it's unrealistic or a lazy way to characterize evil vampires.

** And in the second half of the story, [[spoiler:Jade kidnaps Viper and force feeds her Ikazuki's chi ([[KickTheSonOfABitch killing him in the process]]), transforming her into [[TheDragon Hebi]], the new General of the [[EliteMooks Samurai Khan]], who is [[UndyingLoyalty completely loyal]] to Jade. Justified, as Jade specifically designed the ritual that caused this change to corrupt Viper.]]

** As a result of her transformations, subsequent isolation in [[EldritchLocation the Emptiness]], and [[ManipulativeBastard Tarakudo]] and the [[EvilMentor Gumo Queen's]] manipulations, [[FallenHero Jade]] is perfectly willing to fight against humanity to provide a future to her unborn kits, though she does have residual affection towards her human family, and it’s commented several times that she isn’t really that monstrous in personality.

But then there's times that a transformation ''doesn't'' {{brainwash|ed}}, [[CyberneticsEatYourSoul de-soul]], [[WithGreatPowerComesGreatInsanity drive insane]], or [[DemonicPossession demonically possess]] the victim. Other times the ViralTransformation causes changes that are purely cosmetic, granting [[{{Transhuman}} amazing abilities]] albeit [[PowerAtAPrice at great cost]] and (usually) a [[PowerUpgradingDeformation horrifying appearance]]. So what do these unwilling tranformees do? Become {{Phlebotinum Rebel}}s or {{Vampire Refugee}}s and use their powers to fight these monsters? Nope. They engage in TranshumanTreachery.

* [[spoiler:Durkon Thundershield]] of ''Webcomic/TheOrderOfTheStick'' is a [[DoubleSubversion double subversion]] when forcibly turned into a vampire. [[spoiler: When he is freed from his sire's thralldom, he viciously attacks his sire's killers, suggesting that he's succumbed to vampires' [[AlwaysChaoticEvil intrinsically evil natures]]. He doesn't deny the evil part but subverts it by saying that he's still committed to the Order and their quest. It's later revealed [[DramaticIrony to the reader]] that undead "Durkon" is a spirit created by Hel, the goddess of the dishonored dead, and is stealing memories from Durkon's [[AndIMustScream trapped soul]] to impersonate him while he advances Hel's agenda.]]

If this FaceHeelTurn is too quick, it gives the impression that some other trope is at work, like TheDarkSide, or WithGreatPowerComesGreatInsanity. However, this trope may be justified a couple of ways. If TheMindIsAPlaythingOfTheBody it doesn't matter that vampire Dan doesn't want to drink human blood, [[SlidingScaleOfVampireFriendliness he has to]], and trying to be [[FriendlyNeighborhoodVampire friendly]] won't last. Alternately, someone seeking the CurseThatCures may make the painful choice to switch sides to save their life. If the setting has an ongoing "[[FantasticRacism race war]]" against what the character has become if they don't join their new race they'll quickly face death. However, most of the time the switch in alliances comes about with alarming speed and lack of concern. At best you'll see these {{Big Bad Friend}}s offer the transformation to a friend or loved one... and kill them if they refuse. TheDarkSide, [[EvilTastesGood they have cookies.]] The justification may be simply that vampires, etc., are AlwaysChaoticEvil, though many people don't see this trope itself as justifying things because they think it's unrealistic or a lazy way to characterize evil vampires.

If this FaceHeelTurn is too quick, it gives the impression that some other trope is at work, like TheDarkSide, or WithGreatPowerComesGreatInsanity. However, this trope may be justified a couple of ways. If TheMindIsAPlaythingOfTheBody it doesn't matter that vampire Dan doesn't want to drink human blood, [[SlidingScaleOfVampireFriendliness he has to]], and trying to be [[FriendlyNeighborhoodVampire friendly]] won't last. Alternately, someone seeking the CurseThatCures may make the painful choice to switch sides to save their life. If the setting has an ongoing "[[FantasticRacism race war]]" against what the character has become if they don't join their new race they'll quickly face death. However, most of the time the switch in alliances comes about with alarming speed and lack of concern. At best you'll see these {{Big Bad Friend}}s offer the transformation to a friend or loved one... and kill them if they refuse. TheDarkSide, [[EvilTastesGood they have cookies.]]

[[folder: Comic Books]]

[[folder: Fan Works]]

[[folder: LARP]]

* In ''Literature/TheMortalInstruments'' it is completely inverted. Werewolves and vampires change only physically, not mentally, through their transformation. They are not eager to hunt humans, nor are they malicious. Unfortunately, it took a long time for the shadowhunters to recognize this and no longer [[VanHelsingHateCrimes discriminated against them]].

[[folder: Live-Action TV]]

* The vampires in ''Series/YoungDracula'' seem to experience shades of this:
** After Ingrid bites her boyfriend Will, he goes from a relatively nice guy who helps wimpier boys open their lockers and was freaked out at the sight of her fangs to living at the castle with her (as opposed to whatever his family situation was before), joining her in mocking her father and brother and admiring her evil plan to trick Count Dracula into getting himself destroyed so she can take over, not to mention being among the crowd of vampires that bare their fangs at the innocent Branagh family to make it clear that they're on the menu.
** Ryan goes from telling his sister to [[MercyKill kill him]], to scratching out her photos and expressing disgust at her "breather" status.
** After [[spoiler: Vlad bites Erin]], she goes from being the face of the Vampire-Slayer alliance to biting people and actively breaking the ceasefire.

* The Synthetics in ''Series/OdysseyFive'' are either completely synthetically grown {{Artificial Human}}s or nanomachine enhanced humans. The latter have to obey the AIs which created the nanites, being even part of a low-grade HiveMind; however, Chuck Taggart reveals after reversing his assimilation that the process can't completely subsume a human unless ''[[HeroicWillpower they want it to.]]'' The terrifying implication being that those humans infected ''want'' to serve the [[AIIsACrapshoot genocidal AIs.]]
* When [[spoiler:Tory]] discovered she was a Cylon on ''Series/{{Battlestar Galactica|2003}}'', in contrast to [[spoiler: Sam, Saul, and Galen]], who went all WhatHaveIBecome, and [[spoiler:Ellen]] who finds a measure of peace in the revelation, it didn't take her long to start seeing the benefits of it and how it meant she was 'better' than humanity, something the ordinary Cylons no longer really boast about anymore though they did [[CulturalPosturing use to]]. She even advised actions that would likely have caused thousands of humans to die in the midseason finale. All of which makes little sense given the Cylons she was with were actually in a weaker position than the humans at that point. In light of what happened later, maybe she should have waited a while before throwing her eggs into another basket.
* In ''Series/BigWolfOnCampus'', werewolves have an evil syndicate, and everybody who becomes a werewolf turns evil...except for the protagonist, for reasons that are never really explained. And yeah, this includes our other main characters when they are [[StatusQuoIsGod temporarily]] transformed, too.
* Done several times on ''Series/DoctorWho''.
** Evil industrialist and DiabolicalMastermind Tobias Vaughn from [[Recap/DoctorWhoS6E3TheInvasion "The Invasion"]] has undergone partial cyber-conversion by the Cybermen but retains his emotions and appears outwardly human.
** In [[Recap/DoctorWhoS12E2TheArkInSpace "The Ark in Space"]], one of the crew gets infected by the Wirrn, and is turned into one of them. He's also the one that causes the ship to blow up after the Doctor tampered with it, and he theorizes he must've had just enough humanity left in him to resist the Wirrn's hive mind.
** [[Recap/DoctorWhoS28E13Doomsday "Doomsday"]] both plays it straight and inverts it: Most humans converted into Cybermen immediately side with them, but Yvonne Hartman has enough willpower to break free and prevent the Cyber-Leader from escaping back into the VoidBetweenTheWorlds.
** Inverted by Dalek Sec, who exhibits signs of Trans-Dalek Treachery after merging with a human. HumanityIsInfectious.
** In [[Recap/DoctorWhoS30E14TheNextDoctor "The Next Doctor"]], the Cybermen attempt to make their collaborator Miss Hartigan their "[[HiveQueen King]]", but she turns out to be exceptionally strong-willed — while most of her morality gets discarded, she retains her emotions and is able to take control of the Cybermen's HiveMind. The Doctor defeats her by [[spoiler:breaking her link to the Cybermen's programming, causing her to [[WhatHaveIBecome see what she had become]] and destroy both the Cybermen and herself.]]
** Subverted in [[Recap/DoctorWhoS36E12TheDoctorFalls "The Doctor Falls"]]. The Doctor says that this isn't actually [[CyberneticsEatYourSoul an inherent property of cybernetic augmentation]]; plenty of people get bits swapped out without turning murderous. The problem is that eventually, someone decides to remove all emotion and program in a desire to "upgrade" everyone else, and then you have an army of Cybermen rampaging across the universe. This is also why the Cybermen are so tenacious — it doesn't matter if every single one of them is destroyed, eventually ''someone'' will create new ones.
* A staple of the ''Franchise/KamenRider'' franchise. Where the many of the villains were once human but have given it up due to their season's power sources. Of course, the heroes usually avert this getting their own powers from the same place.
* The short-lived series ''Series/{{Prey}}'' has a new species [[HollywoodEvolution evolving]] from humanity and living in secret among us. These Homo Dominants (as they're named later) lack any emotions and have an instinctive desire to dominate and/or destroy humans, believing that, otherwise, the much more numerous humans will destroy them just like we killed the Neanderthals. They are stronger, faster, and smarter than most humans (one episode shows they have mastered [[{{Nanomachines}} nanotechnology]]). The protagonists are a group of scientists who discover the existence of the Dominants and fight to stay alive and reveal the truth to the world (with the help of a Dominant who has seconds thoughts). After the revelation, the government, as expected, starts trying to eliminate the threat to humanity by striking first. Peace talks between human and Dominant representatives are disrupted by radical elements. Both sides attempt to figure out ways of turning one species into another (humans try it with a drug, while Dominants create a nanovirus that rewrites DNA).

** Evil industrialist and DiabolicalMastermind Tobias Vaughn from "The Invasion" has undergone partial cyber-conversion by the Cybermen but retains his emotions and appears outwardly human.
** In "The Next Doctor", the Cybermen attempt to make their collaborator Miss Hartigan their "[[HiveQueen King]]", but she turns out to be exceptionally strong-willed - while most of her morality gets discarded, she retains her emotions and is able to take control of the Cybermen's HiveMind. The Doctor defeats her by [[spoiler: breaking her link to the Cybermen's programming, causing her to [[WhatHaveIBecome see what she had become]] and destroy both the Cybermen and herself.]]
** In the Ark in Space, one of the crew gets infected by the Wirrn, and is turned into one of them. He's also the one that causes the ship to blow up be after the Doctor tampered with it, and he theorizes he must've had just enough humanity left in him to resist the Wirrn's hive mind.

** Subverted in "The Doctor Falls." The Doctor says that this isn't actually [[CyberneticsEatYourSoul an inherent property of cybernetic augmentation]]; plenty of people get bits swapped out without turning murderous. The problem is that eventually, someone decides to remove all emotion and program in a desire to "upgrade" everyone else, and then you have an army of Cybermen rampaging across the universe. This is also why the Cybermen are so tenacious--it doesn't matter if every single one of them is destroyed, eventually ''someone'' will create new ones.

* In ''Series/BigWolfOnCampus,'' werewolves have an evil syndicate, and everybody who becomes a werewolf turns evil...except for the protagonist, for reasons that are never really explained. And yeah, this includes our other main characters when they are [[StatusQuoIsGod temporarily]] transformed, too.

[[folder:Web Comics]]

--> '''Bart''': Come join us Lisa, it's so cool. You get to stay up all night drinking ''blooood''.
--> '''Milhouse''': [[ComicallyMissingThePoint And if you say you're a vampire, you get a free small drink at the movies.]]

* ''ShinMegamiTensei'' HalfHumanHybrid {{Fusion Dance}}s ''always'' end like this. The interested parties seldom lose their identities but become quickly enchanted with their new fancy powers and start allowing their fanaticism and ego to dictate their actions. It's more a case where every negative emotion is amplified by the simple fact the newly minted hybrid is so drunk on power he or she no longer bothers to answer to any problem he or she can't deal with by simple ''power''.

* The Vanu Sovereignty of ''VideoGame/{{Planetside}}'' are ScaryDogmaticAliens minus the being aliens part, a crazed cult of scientists and tech-heads who have been "touched" by {{Precursor|s}} technology and are out to [[AscendToAHigherPlanetOfExistence "enlighten"]] humanity whether it wants to be or not. A possible explanation is the Vanu technology's neural interfaces, not designed to work with human minds, have driven the people of the Sovereignty insane.

[[caption-width-right:350:Hey, they may be hapless victims turned bloodlusting walking corpses, but living forever in eternal beauty is a great health benefit!]]

If this FaceHeelTurn is too quick, it gives the impression that some other trope is at work, like TheDarkSide, or WithGreatPowerComesGreatInsanity. However, this trope may be justified a couple of ways. If TheMindIsAPlaythingOfTheBody it doesn't matter that vampire Dan doesn't want to drink human blood, [[SlidingScaleOfVampireFriendliness he has to]], and trying to be [[FriendlyNeighborhoodVampire friendly]] won't last. Alternately, someone seeking the CurseThatCures may make the painful choice to switch sides to save their life. If the setting has an ongoing "[[FantasticRacism race war]]" against what the character has become, if they don't join their new race they'll quickly face death. However most of the time the switch in alliances comes about with alarming speed and lack of concern. At best you'll see these {{Big Bad Friend}}s offer the transformation to a friend or loved one... and kill them if they refuse. TheDarkSide, [[EvilTastesGood they have cookies.]]

** Possibly WithGreatPowerComesGreatInsanity, thanks to what can happen with Dhampirs, or what happened in [[spoiler:Book 2, where a person was in fact a 'latent' vampire. She was actually surprisingly reasonable, but with a complete personality change afterwards.]]
*** Or in The Rose Princess [[spoiler:A woman with an axe to grind against the titular Vampiress (said vampiress had killed her family) got turned in an unusual fashion. After D killed the vampiress, Elena asked D to join her in ruling over the humans, and comments that being a vampire is so much better. There's quite a bit of insight given into her psychology, though. Averted with a later human, who resisted/rejected it.]]

* ''Anime/DarkerThanBlack'': Tania has a quick and jarring her personality shift upon becoming a Contractor. Originally, she was a kind person. She immediately becomes cold towards her friends and by the third episode is really enthusiastic about the idea of selling her friends out to an intelligence agency for a chance for promotion. [[spoiler:she even brutally kills her childhood friend/crush Nika]]. The series also has several examples of Contractors who don't turn on their loved ones, so it's possible that kind people like Tania are actually more liable to turn to brutality and coldness upon suddenly becoming detached from their emotions, while a person who was already detached may not have quite as jarring a shift.

* In ''Anime/{{Blassreiter}}'', [[spoiler:Wolf Goring, the commander of the XAT,]] is infected with nanomachines and transforms into an Amalgam. Beatrice convinces him that this is a good thing, as only the Demoniacs will survive the coming Armageddon, and he sets to work infecting the rest of the XAT, all the while claiming it's for their own good.

* The majority of vampires in ''Manga/{{Shiki}}'', though not all of them are happy about having to. Any who choose ''not'' to engage in this trope stand out as a result. Megumi, one of the first turned is a very notable example of this trope however.
* This is what happened to [[spoiler:[[TheDreaded Acnologia]]]] in ''Manga/FairyTail'' after he [[spoiler:transformed into a Dragon after overusing his Dragonslaying magic. Before this point, he actually wanted to protect humanity from suffering under dragons' heels like how his own family was killed by them while getting his revenge...but then overuse of his magic and his transformation drove him DrunkWithPower and he decided destroying ''everything'' was actually pretty damn fun.]] This was a real enough threat to other Dragonslayers ([[spoiler:in fact, many of those early Slayers ended up like him, but were killed with few exceptions]]) that the dragons [[PlayingWithFire Igneel]], [[ExtraOreDinary Metalicana]], [[BlowYouAway Grandine]], [[LightEmUp Weißlogia]] and [[CastingAShadow Skiadrum]] [[spoiler:sealed themselves within [[TheHero Natsu]], [[JerkWithAHeartOfGold Gajeel]], [[LittleMissBadass Wendy]], [[BenevolentBoss Sting]] and [[TheStoic Rogue]] respectively to prevent them from becoming Dragons just like him.]] The former three decided that it was worth [[spoiler:[[ParentalAbandonment leaving their children completely in the dark about what had happened]],]] and the latter two went as far as [[spoiler:[[FakingTheDead pretending to let their sons kill them]]]] in order to preserve the illusion.
* ''Manga/TokyoGhoul'' zigzigs this all over the place. After becoming a HalfHumanHybrid, Kaneki begins down a slow path of abandoning his humanity in favor of living fully as a Ghoul. However, he remains sympathetic to humans and refuses to kill them. On the other hand, the CreepyTwins Kuro and Shiro readily betray humanity after becoming half-Ghouls. In the sequel, [[spoiler:Seidou Takizawa]] fully embraces the trope while Kaneki has become a full-blown ProHumanTranshuman.
* In ''Anime/MacrossFrontier'', the BigBad who instigated the BugWar with the Vajra turns out to be [[spoiler:orchestrated by Frontier's sister colony ship, Galaxy, which has [[CyberneticsEatYourSoul implemented cybernetics into all of their citizens]].]]

* In ''Webcomic/OnePunchMan'' ''Monster Invasion'' arc. One monster, who was formerly a human, reveals he became as such through eating a monster cell and crashes a fighting tournament offering any of the fighters there the chance to become one as well. A few take him up on the offer, mostly out of fear for their lives but also because a few were likewise either a SoreLoser who either Saitama and Suiryu had knocked out of the tournament, were power hungry to begin with or (in one case) had came into the tournament intending to kill people. Indeed, once they eat a cell, they have no qualms about exclaiming about the boost of power they gain and attacking people.
* This happens in the anime ''Manga/{{Claymore}}'' as soon as a warriorness loses control of her demonic powers and transforms into an [[FaceMonsterTurn Awakened Being]]. The Awakened Beings are immediately evil and eat human guts. However, later in the plot it turns out that not all Awakened Beings are completely evil.

[[folder:Comic Books]]

** A disturbing example shows up. In the worst MadScientist fashion, after [[ComicBook/FantasticFour Reed Richards]] sees a zombie ComicBook/SheHulk eat his children he decides (after studying the zombies) that they are the next evolutionary step and ''turns the whole FF into flesh eating fiends!'' Also from the same book, ZombieInfectee Giant Man knocks out and hides Black Panther because he wants to have a "snack" to eat later, knowing his former colleagues would kill the world's population in days. [[spoiler:He slowly amputates T'challa's limbs and eats them to stave off his hunger.]] He survives, thankfully, and gets a [[ArtificialLimbs new leg]] out of it.
** In ''Evil Evolution'' [[spoiler:it's suggested that Reed is inadvertently to blame for unleashing the virus upon his universe to begin with, thus piling guilt issues on a genocidal scale on top of everything else as well.]]

* Averted in ''ComicBook/XMen'' #2. It's made abundantly clear in the text that, despite this trope appearing to be in play, there is definitely brainwashing in play, at the least MoreThanMindControl.

* Lucy Westerna in the DC comic ''Victorian Undead 2: Sherlock Holmes vs Dracula''. In this alternate version of ''{{Dracula}}'', she avoids being staked upon her awakening after being turned and sides with Dracula to takes over London. In each confrontation with the protagonists, she goes on and on to the protagonists how she likes the power that being a vampire has given her. [[spoiler:Though she reveals she's not very loyal to Dracula either, [[ScrewThisImOutOfHere leaving in the middle of the conflict with her newfound power rather than be killed]]. Notably, in a reversal of the novel, she's not killed either and still at large in London to spread vamprisim at her own pace]]
-->'''Lucy:''' ''[after Helsing offers her "peace" in exchange to know Dracula's whereabouts]'' Peace? Do you imagine I am in pain, professor? A tortured soul? Look at me, I'm magnificent! In my warm life, all that expected of pretty little Lucy was to marry well and become a brood mare. Squatting out children and dancing to my husband's whims and fancies. Now I am so much more, I had to die to become fulfilled. I am stronger than all of you, faster,--the things I can see and hear--I am extraordinary!

* In ''[[ComicBook/{{Peculia}} Peculia and the Goon Grove Vampires]]'' (Pictured), the three babysitters fall unwittingly prey to the vampire family they were tasked to look after (they were tricked into doing the job by the eldest daughter of the family). When Peculia flees into the woods after dispatching two of the family members, she comes across the the newly risen and turned girls who're clearly enjoying their new undead status. Stating how wonderful it feels and try to convince Peculia to join them by stating it as "Only a brief feeling of obliteration and then you'll live forever!". Needless to say, they don't look to give Peculia a choice in the matter.

[[folder:Fan Works]]

* Fanfic/HalkegeniaOnline. [[spoiler:Ephilates]] is quite pleased with being turned into a faerie, and refuses to tolerate the faerie lords' attempts to return to earth. To that end, [[spoiler:he allies with the conspiracy to overthrow the crown]].

** [[TheBrute Tarantula]] [[FullyEmbracedFiend relishes her transformation]] the most out of all Jade's minions, taking it as an excuse to be the immoral and sadistic monster she really is deep inside, and has even been attacking and killing homeless people under Jade's nose. [[spoiler:Part of the [[NotQuiteDead Gumo Queen's]] [[DealWithTheDevil deal with her]] is that the Queen will make her even ''more'' inhuman if she succeeds in [[TheStarscream taking Jade out]].]]
** [[spoiler:Simon Leston]], the new Squid Khan General, is an AxCrazy MisanthropeSupreme. As such, by the time we meet him, he's not only fully transformed, but has become an outright EldritchAbomination in the process.

* Averted in ''Film/LetTheRightOneIn''. Eli feeds on people, and will often use the fact that she's looks like a 12-13 year old girl to appear harmless. However, she clearly does not enjoy doing it and only does so when she can no longer resist the hunger. After her first shown attack in the film she looks like she's about to cry afterwards. The only time she deliberately unleashes death is [[spoiler:at the end when the four bullies are attempting to drown Oskar.]] This clearly hits her BerserkButton and launches an UnstoppableRage.
* Pretty much every vampire in the ''Film/BladeTrilogy'', whether five minutes or five centuries old, is invariably fine with messily killing humans. Vampirism comes with a nearly insatiable thirst for human blood. The handful of exceptions were all cured with an anti-vampire drug, and of course Blade himself (being a [[{{Dhampyr}} Daywalker]]) is the big exception. Blade did feed on humans at one point, mostly homeless people, but that was before meeting Whistler and developing the thirst-suppressing serum.

* The [[OurVampiresAreDifferent hemophages]] in ''Film/{{Ultraviolet}}'' follow the "race war" scenario, but since the humans treat them like a plague to be eradicated, it's not like they have a lot of options. At the beginning, two investigators arrive to the scene of the crime, where a hemophage's body can be seen. One of them accidentally touches the blood. Two seconds later, his partner pulls out a gun and puts a bullet in his head (which is, of course, ignoring the fact that he's bound to get some of his partner's blood on him).
* A heroic example occurs in ''Film/{{Avatar}}''. As Jake gets used to his new body, he also shifts loyalties towards the alien race, and he eventually leads them to war against the humans. And by the end, [[spoiler:he gives up his human body to stay with the Na'Vi]]. So do all the other Avatars, for that matter.

* In the ''Film/CountYorga'' movies all the turned victims instantly become evil and obey Yorga without question examples being Erica, who attacks Hayes along with the other brides, tries to attack Michael when he comes across the dying Hayes (and yet oddly gives him a chance to [[StakingTheLovedOne stake her]], he doesn't go through with it) and attacking Michael and Donna as they're leaving right after [[spoiler:Yorga is killed. Showing that the vampirism is permanent and she is beyond saving, plus that the vampires are inherently evil. We also find out that the blonde haired bride of Yorga's is Donna's mother (who at the beginning had "mysteriously died")]] who likewise attacks Dr. Hayes with the other brides. An unused scene also showcased she had become monstrous enough to [[EatsBabies eat a]] [[http://i149.photobucket.com/albums/s56/Retro7/19643eb0.jpg baby]]. [[spoiler:Donna herself turns at the end of the film and instantly attack Michael when his guard is down]].
** In the sequel, theres the Cynthia's sister, Ellen, who joins Yorga's brides after his harem attack their family. She, along with the other brides, torments Cynthia mentally as she trying to find her way out of Yorga's mansion. She is also part of an ambush on her boyfriend which results in him killed and thrown to the vampire brides for food (of which Ellen joins in on). [[spoiler:At the end, one of the heroes, Balwin, succumbs to vampirism after Yorga is killed and instantly claims Cynthia as his own victim right after he saves her.]]
* Lillian and Mara in the first film of the Film/{{Subspecies}}. Mara is the first victim of Radu's, after being buried and rising as an undead later, helps Radu lure out her friend Michelle and capture her. Lillian is kidnapped in the middle of the film and slowly turned by Radu. We actually see her becoming a monster as her transformation finishes while Michelle and she are trying to escape Radu's castle. Lillian instantly turns on Michelle once her fangs form, scaring her right into the arms of Mara. The next scene sees the two dragging Michelle to Radu so he can bite her and even smiling wickedly as they hold her down so she can't escape, pretty much solidifying their loss of humanity. [[spoiler:Radu succeeds in turning Michelle but she mostly flip flops on this trope through the series, trying to fight from becoming an all out monster like Radu is though falls off the wagon now and then due to his influence.]]

** ''Film/HorrorOfDracula'': Lucy , after becoming a vampire, preys on her niece as one of her first victims.
** ''Film/TheBridesOfDracula'': A village girl and a school teacher, Gina, fall victim to the vampire Baron and instantly become evil upon resurrecting. [[spoiler:Though oddly the Baron's mother doesn't succumb to this trope when she is turned.]]
** ''Film/DraculaPrinceOfDarkness'': Helen, the protagonist's sister in law, tries to attack her two remaining family upon becoming undead.

** ''Film/TheSatanicRitesOfDracula '': All the women in Dracula's cellar were once agents investigating the cult a company had ties with and were captured and turned. In the film we see the secretary of one of the agents, Jane, kidnapped herself and turned by Dracula. When Jessica discovers her in the cellar and tries to free her. Jane bares her fangs and tries to bite her, helping the vampire women knock her down so they can feed on her. She also tries to pull the same trick on her boss as well.
* In ''Film/{{Dracula 2000}}'', gives us the three Dracula's brides of the film. While the first two are somewhat dubious (Solina was a thief as a human and seem to gleefully relish being a vampire, and we don't know much about Valrie as she just a reporter in the wrong place at the wrong time), Lucy fits the trope well as she was a roommate of Drac's main target Mary and the two got along well. Once she was turned however, she had no reservations on attacking Mary with the other two brides.
* This is thought to be the case with Will's nanomachine-augmented hybrids in ''Film/{{Transcendence}}''. [[spoiler:But it's not.]]
* In ''Film/DraculaUntold'', once the fledgeling vampires Vlad has sired are finished with the Ottomans, they start eyeing Vlad's son hungrily. Their spokes-pire even going so far as to say "they (humans) are ''all'' our enemies now."
* In ''Film/BordelloOfBlood'', Catherine is kidnapped by Lilith's men and brought to bordello. She awakens to find herself tied down with her younger brother, Caleb, now turned into a vampire (which was fairly obvious since the last time we saw him human was when Lilith was approaching him for a three way), standing over her. She begs him to free her but he claims he can't.

[[folder:LARP]]

* Creator/EdmondHamilton's ''The Man Who Evolved'' might be the UrExample. A man invents a machine that accelerates his evolution. The first two stages, he is still somewhat decent in behavior. In the third stage, he states he intends to take over Earth and use it as a laboratory. The protagonist stops him by [[spoiler:convincing him to evolve further. It works; the next stage is beyond such desires]].
* Usually averted by Creator/AlastairReynolds, but his most recent [[Literature/RevelationSpaceSeries Revelation Space]] prequel, ''Literature/ThePrefect'', includes [[spoiler:Aurora, the only survivor of the eighty experimental subjects who were uploaded into computers. Some trauma was involved (like seeing all her fellow Transmigrants freeze or crash), but basically she decides her survival trumps everyone else's and plots to kill everyone in the Glitter Band habitats for safety.]]
* In ''Literature/TheDresdenFiles'' all the vampire courts appear to have this to a greater or lesser degree. When the Red Court fully transform the human part of them dies entirely, though the physical form is still used as a "flesh mask" by the creature within. However they don't cross over until they kill a human and drink their blood, and several members of the organization dedicated to fighting the Red Court are [[VampireRefugee Vampire Refugees]]. The Black Court are Dracula style vampires, but little is mentioned about how they reproduce except that they do it fast, which does imply a pretty complete transformation. The White Court are the least hit by it. They end up sharing their body with a demonic Hunger that heavily influences them, but it is possible to fight against it. They're also a family, so it's more a matter of accepting the family business than a 180 degree allegiance switch.
* In ''Literature/KnownSpace'' if an ape or hominid at a certain age eats from the Tree of Life it becomes a Protector (too young, and it doesn't do anything; too old and they don't survive the metamorphosis) where they enter true adulthood and have a massive amount of changes, making it stronger, faster, more resistant to damage, and granting it super-human intelligence. A Protector is compelled to protect his genetic lineage, and his species from any possible harm. As a matter of course, Protectors exterminate any nearby alien species on the grounds that they ''might'' become a threat.
** Most Protectors are ''only'' interested in protecting their direct descendants and are perfectly willing to nuke other human groups to do so. It's a rare Protector who can make itself feel concerned for humanity as a whole, and usually only either when all of its own lineage has been killed off, or when it realizes that helping humanity as a whole is the best way to help its own bloodline. WordOfGod says that the more intelligent a Protector was as a breeder, the easily it can make the jump to protecting everybody and not just its own children.
* Inverted in ''Literature/TheVampireFiles'' with [[spoiler:Whitey Kroun]], who'd actually been prone to rape and murder women while drugged out of his mind prior to becoming a vampire. His transformation rendered him unable to do drugs anymore, and brain trauma suffered when he died stripped away his memories of his past misdeeds and their motives, allowing him to achieve a HeelFaceTurn ''because'' he'd ceased being human.
* In Creator/OlegDivov's ''Brothers in Reason'', the BigBad turns out to be [[spoiler:a result of a [[SovietSuperscience Soviet experiment]] to turn 1000 children into psychics; only half-a-dozen children survived the process. He is one of the three to actually get enormous PsychicPowers]]. Subverted in that [[spoiler:the two other super-psychics as well as numerous other lesser ones stayed true to their ideals]].

* In the ''Literature/ImmortalsAfterDark'' series by Kresley Cole, [[spoiler:Webb]] is a fanatic bent on destroying immortals, believing them to be unnatural. He becomes immortal himself, and promptly begins plotting the subjugation of the human race he championed, having decided that he's now part of a master race or some such. Really, it's just a predilection of his; the only thing that changes is which team he's on.
* When [[spoiler:Stella]] becomes a vampire in ''Literature/AlmostNight'', she becomes as evil as the rest of them, and takes great joy in killing humans and animals.

** The only (known) exception is a girl named Maureen. As a human she was rather [[StalkerWithACrush annoying]], but as a vampire she is a cruel murderer. But it is speculated that the circumstances of her transformation have driven her crazy.

[[folder:Live-Action TV]]
* Lauren on ''Series/{{Being Human|UK}}'' is less than humane. Mitchell transformed her into a vampire to "save her" from dying when he fed from her and has regretted it ever since, not least because the once sweet and kind Lauren has taken to her vampiric biological mandate with gusto and sociopathy. It remains to be see whether she changes her mind or doesn't get killed first.

** All the vampires. Instantly. Although "you're not looking at your friend. You're looking at the thing that killed him," is the official story from the start, this gets... layered over time. Because vampires may have had their souls replaced by demons and a complete moral rewrite, but they still have the same memory set, and in some cases this hits harder than others.

** After [[spoiler:Vlad bites Erin]], she goes from being the face of the Vampire-Slayer alliance to biting people and actively breaking the ceasefire.

** All the Psychic Children we meet who aren't killed before they can turn their demon-blood-born power toward [[BigBad Azazel]]'s murderous expectations. Jake even kills Sam and unleashes hell on earth, intending to lead an army of demons against humanity. [[spoiler:Sam, who never intentionally betrays humanity, seems to be the only exception.]]

* The Synthetics in ''Series/OdysseyFive'' are either completely synthetically grown {{Artificial Human}}s or nanomachine enhanced humans. The latter have to obey the AIs which created the nanites, being even part of a low-grade HiveMind; however Chuck Taggart reveals after reversing his assimilation that the process can't completely subsume a human unless ''[[HeroicWillpower they want it to.]]'' The terrifying implication being that those humans infected ''want'' to serve the [[AIIsACrapshoot genocidal AIs.]]
* When [[spoiler:Tory]] discovered she was a Cylon on ''Series/{{Battlestar Galactica|2003}}'', in contrast to [[spoiler:Sam, Saul, and Galen]], who went all WhatHaveIBecome, and [[spoiler:Ellen]] who finds a measure of peace in the revelation, it didn't take her long to start seeing the benefits of it and how it meant she was 'better' than humanity, something the ordinary Cylons no longer really boast about anymore though they did [[CulturalPosturing use to]]. She even advised actions that would likely have caused thousands of humans to die in the midseason finale. All of which makes little sense given the Cylons she was with were actually in a weaker position than the humans at that point. In light of what happened later, maybe she should have waited a while before throwing her eggs into another basket.

** In "The Next Doctor", the Cybermen attempt to make their collaborator Miss Hartigan their "[[HiveQueen King]]", but she turns out to be exceptionally strong-willed - while most of her morality gets discarded, she retains her emotions and is able to take control of the Cybermen's HiveMind. The Doctor defeats her by [[spoiler:breaking her link to the Cybermen's programming, causing her to [[WhatHaveIBecome see what she had become]] and destroy both the Cybermen and herself.]]

** Subverted in "The Doctor Falls." The Doctor says that this isn't actually [[CyberneticsEatYourSoul an inherent property of cybernetic augmentation]]; plenty of people get bits swapped out without turning murderous. The problem is that eventually someone decides to remove all emotion and program in a desire to "upgrade" everyone else, and then you have an army of Cybermen rampaging across the universe. This is also why the Cybermen are so tenacious--it doesn't matter if every single one of them is destroyed, eventually ''someone'' will create new ones.
* A staple of the ''Franchise/KamenRider'' franchise. Where the many of the villains were once human but have given it up due to their season's power sources. Of course the heroes usually avert this getting their own powers from the same place.

* The series ''Series/TeenWolf'' has this. The fullness of the moon triggers a shift in personality for werewolves, which can be overcome by experience (Derek) or a special focus (Scott). Then, there are cases like Isaac, Erica, and Boyd, who are generally more bully-like regardless of the lunar phases. This is particularly ironic because Isaac, Erica and Boyd were all bullied before they received the bite.

* ''TabletopGame/DungeonsAndDragons'' werebeasts generally have a set alignment, with even good-aligned werebeasts experiencing significant personality alteration. This was used for horror in ''TabletopGame/{{Eberron}}'', where this - as a magical effect - is one of the few cases of AlwaysChaoticEvil the author left in the setting; during the Lycanthrope Purge, which Keith Baker has described as "''Film/28DaysLater'' with werewolves", the alignment-enforcing power of the transformation was abused by infectious lycanthropes to do things like turn everyone in a town into wererats in order to get them to betray templars.

* ''VideoGame/{{Starcraft}}'': Kerrigan is Queen Bitch of this trope. At first she's somewhat mind controlled, yes, but also fairly autonomous. And then she's entirely autonomous and sells out the human race to lead the Zerg. She seemed slightly sad about trying to kill Raynor out but she got better. [[AllThereInTheManual Apparently]] tied to the ''very'' nasty [[FreudianExcuse mental conditioning and childhood]] she had.
** When she infests [[spoiler:Ethan Stewart]], he becomes an intelligent and fairly free-willed Zerg-Terran (and she knows it, so she threatens him if he ever turns against her). He immediately falls in love with her and follows her orders and does everything to gain her approval. [[spoiler:It doesn't work.]] ''{{VideoGame/StarcraftII}}'' goes into a bit more detail, and the Zerg Campaign will likely go into more...
** By the end of the plot of [[VideoGame/StarCraftIIHeartOfTheSwarm Heart of the Swarm]], it's become complicated. [[spoiler:The [[{{Precursors}} Xel'Naga]] began molding both the Protoss and the Zerg into what they are now, apparently because it's just how their species perpetuates themselves. But their work on the Zerg was subverted by Amon, the Dark Voice, who gave the Zerg a biological imperative to obey him and destroy the Protoss. The Overmind freed the Zerg from that by [[ThanatosGambit getting himself killed]] so Kerrigan could take over. But it turns out that even when freed from Amon's influence, the Zerg are still a HordeOfAlienLocusts. Once freed, Kerrigan is relatively humane and an AntiVillain, but still more inhuman than she was before.]]

* ''VideoGame/MassEffect3'': Javik explains that this happened to a species during his time: the Zha'til. They resorted to cybernetic implants to save themselves, and wound up being controlled by the implants and changing into a synthetic race which waged war on the rest of the galaxy. They are one of the main reasons Javik hates AI's so much.
** [[spoiler:Cerberus's use of indoctrinated soldiers and the Illusive Man's plan to make humans the dominant species via control of [[EldritchAbomination The Reapers]] are other examples. Emphasis on treachery as TIM ends up indoctrinated by the endgame.]]
** Played with in ''VideoGame/MassEffect2''. In the ''Overlord DLC'', because of the extensive cybernetic implants that Shepard received from the Lazarus Project that brought them back to life, this was enough to allow them to become temporarily ''hacked'' by David Archer. This doesn't actually stop Shepard however, but simply lets them see the world in MatrixRainingCode.

* ''ShinMegamiTensei'' HalfHumanHybrid {{Fusion Dance}}s ''always'' end like this. The interested parties seldom lose their identities, but become quickly enchanted with their new fancy powers and start allowing their fanaticism and ego to dictate their actions. It's more a case where every negative emotion is amplified by the simple fact the newly minted hybrid is so drunk on power he or she no longer bothers to answer to any problem he or she can't deal with by simple ''power''.

** Alice is stated to be antisocial and unpleasant to humans, but takes politeness and SacredHospitality as seriously as most of Gensokyo's denizens.

* ''VideoGame/MortalKombatX'': While most of the Earthrealm heroes [[ReforgedIntoAMinion turned revenants]] retain their original memories, they were brainwashed by {{Necromancer}} Quan Chi to the point of extreme hatred and rage, causing them to align more with the Netherrealm during the 25-year gap. [[EvilFeelsGood They don't feel bad committing evil deeds]] in the name of BigBad Shinnok, with [[spoiler:Liu Kang and Kitana being the worst examples, as they feltt disillusioned by the thunder god who condemned to their fates at the end of ''VideoGame/MortalKombat9'', and so, they decide to become CoDragons to Quan Chi and Shinnok]]. While Sub-Zero, Scorpion and Jax are restored to the side of good by Raiden, the remaining revenants aren't so lucky, as Scorpion couldn't contain his RoaringRampageOfRevenge against Quan Chi and kills him off without realizing why the sorcerer was needed, thereby condemning them to a FateWorseThanDeath. Also, with Shinnok and Quan Chi gone for good, [[spoiler:Liu Kang and Kitana voluntarily decide to become the Netherrealm's new rulers, thereby shaping them up to become future villains.]] Kung Lao's and Kung Jin's ''MKX'' arcade endings show [[spoiler:while ''it is'' possible for a revenant to overcome the corruption that bound them to the Netherrealm via HeroicWillpower and embracing positive emotions, the revenants were brainwashed to the point of extreme hatred, making this a long road to recovery, should they ever find redemption.]] Intros with Sub-Zero, Jax, and Scorpion show that even after being restored to life, their experiences as revenants has left them traumatized and psychologically scarred to the point they either self-isolated themselves or contemplated suicide.

* The Vanu Sovereignity of ''VideoGame/{{Planetside}}'' are ScaryDogmaticAliens minus the being aliens part, a crazed cult of scientists and tech-heads who have been "touched" by {{Precursor|s}} technology and are out to [[AscendToAHigherPlanetOfExistence "enlighten"]] humanity whether it wants to be or not. A possible explanation is the Vanu technology's neural interfaces, not designed to work with human minds, have driven the people of the Sovereignity insane.

* It happens regularly with [[OurVampiresAreDifferent Dead Apostles]]: no matter if they turn on their own with the use of magecraft or are turned by the bite of another Dead Apostle, a True Ancestor or even [[EldritchAbomination Brunestud of the Crimson Moon]] itself, by the time the process ends they see themselves as superior to humanity (or saw the Dead Apostle as superior even ''before'', in the case of those who turned themselves) and have no problem at feeding on them. So far, there are only five {{Subversion}}s: Zelretch, Merem Solomon and [[spoiler:Satsuki]] were powerful enough to skip the usual long and torturing process and their personalities remained the same (even Merem Solomon's adoration of Brunestud fits in, as [[BecauseYouWereNiceToMe it was the only one to treat him as a person and turned him as an act of mercy, even giving him a few pointers to better live as a Dead Apostle]]), Gransurg Blackmoore was a human who had decided to serve Brunestud after being crushed by him in battle and turned himself because it would be more appropriate, and Enhance {{Defied}} this by [[HeroicWillpower willing himself into retaining most of his humanity]] before starting to hunt down the other Dead Apostles.

* Brock from ''Webcomic/BracefaceFangface'' and ''Webcomic/BrockOfTheUndead''. He becomes a bloodsucking corpse who is subservient to his master's will, but finds that the [[CursedWithAwesome power outweighs the downsides]] and happily turns his girlfriend into a vampire as well.

* [[spoiler:Durkon Thundershield]] of ''Webcomic/TheOrderOfTheStick'' is a [[DoubleSubversion double subversion]] when forcibly turned into a vampire. [[spoiler:When he is freed from his sire's thralldom, he viciously attacks his sire's killers, suggesting that he's succumbed to vampires' [[AlwaysChaoticEvil intrinsically evil natures]]. He doesn't deny the evil part, but subverts it by saying that he's still committed to the Order and their quest. It's later revealed [[DramaticIrony to the reader]] that undead "Durkon" is a spirit created by Hel, the goddess of the dishonored dead, and is stealing memories from Durkon's [[AndIMustScream trapped soul]] to impersonate him while he advances Hel's agenda.]]

** Likewise [[spoiler:Milly Van Helsing, Helsing's wife. Mostly as gratitude to Dracula as being turned allowed her to be cogent again after she went mad as a human (due to the loss of her son). Citing becoming Dracula's bride was better than wallowing away in a mental asylum. When confronted with her husband, she cites it as "Nothing personal, but you ''did'' leave me to rot".]]
* ''WebComic/WalkingInTheDark'': While vampires aren't inherently evil upon being turned and can go on to live semi-normal lives just now with need to protect themselves from the sun and needing blood but not necessarily having to drain humans to do it. Those that were bad in life will have this negativity increased after becoming one. One of Ian's gang, Priscilla who's likewise an UndeadChild, for example was a BrattyHalfPint in life. When she was turned in an effort to save her from a knife wound caused by a human bandit. She instantly killed her father and relished in feeding on humans left and right because she still had that child like mindset. KidsAreCruel after all and when you give them supernatural powers, that leads into disaster.

* In the ''Podcast/MetamorCity'' podcast novel ''Making the Cut'', this happens to [[spoiler:Miriam]] after she's turned into a vampire. The vampires order her (which cannot be disobeyed) [[ICannotSelfTerminate to not kill herself]], do anything against them, lie to them, and she has to operate as a spy for them. They eliminate every possible option for rebellion/escape, or letting her Psi Collective people know what happened to her in any way. [[spoiler:They miss one or two tiny loopholes, which she exploits for all they are worth in an attempt to save her allies.]]

* ''WebOriginal/OrionsArm'' presents the phenomenon of "hyperautism", a condition that arises following the ascension of a mind to one of higher toposophic level with the result that it can fully comprehend and model the mental and emotional states of its former peers. They effectively lose the ability to see less capable beings as sentients... instead envisaging them as simple automatons or even extensions of their own minds. This can result in Hyperautistic Sociopathy when the transcendant mind sees its former peers as tools to be used and abused as it sees fit.

** Inverted with the Pack. When Coyote, a robot, offers various "upgrades" to the other members, Jackal and Hyena become {{Hollywood Cyborg}}s and Wolf becomes a HalfHumanHybrid. Dingo, the group's OnlySaneMan, forgoes the transhumanism, takes a suit of PoweredArmor, and would later make a HeelFaceTurn. Thing is, the guys that remain bad guys were always crazy.
** Dingo himself is an inversion, as he only fully makes his HeelFaceTurn after himself becoming a transhuman by bonding with the {{nanotech}} AI Matrix[[note]]though it's a bit unclear whether Matrix bonded with Dingo, or just his armor[[/note]]. Matrix is also making a HeelFaceTurn as part of this process (Dingo and Goliath having convinced it not to initiate a GreyGoo scenario), and allows Dingo's consciousness to remain in the driver's seat, though it is able to speak to him.
* ''WesternAnimation/TheSimpsons'' Treehouse of Horror IV has the segment, ''Bart Simpson's Dracula'' in which Bart gets captured by Burns and bitten. Later that evening, he visit Lisa's outside her bedroom with a few other kids he's turned and tries to convince Lisa to let him bite her.

* ''WebComic/WalkingTheDark'': While vampires aren't inherently evil upon being turned and can go on to live semi-normal lives. Those that were bad in life will have this negativity increased after becoming one. One of Ian's gang, Priscilla, for example was a BrattyHalfPint in life. When she was turned in an effort to save her from a knife wound caused by a human bandit. She instantly killed her father and relished in feeding on humans left and right because she still had that child like mindset. KidsAreCruel after all and when you give them supernatural powers, that leads into disaster.

* When [[spoiler:Tory]] discovered she was a Cylon on ''Series/{{Battlestar Galactica|2003}}'', in contrast to [[spoiler:Sam, Saul, and Galen]], who went all WhatHaveIBecome, and [spoiler:Ellen] who finds a measure of peace in the revelation, it didn't take her long to start seeing the benefits of it and how it meant she was 'better' than humanity, something the ordinary Cylons no longer really boast about anymore though they did [[CulturalPosturing use to]]. She even advised actions that would likely have caused thousands of humans to die in the midseason finale. All of which makes little sense given the Cylons she was with were actually in a weaker position than the humans at that point. In light of what happened later, maybe she should have waited a while before throwing her eggs into another basket.

* When [[spoiler:Tory]] discovered she was a Cylon on ''Series/{{Battlestar Galactica|2003}}'', in contrast to [[spoiler:Sam, Saul, and Galen]], who went all WhatHaveIBecome, it didn't take her long to start seeing the benefits of it and how it meant she was 'better' than humanity, something the ordinary Cylons no longer really boast about anymore though they did [[CulturalPosturing use to]]. She even advised actions that would likely have caused thousands of humans to die in the midseason finale. All of which makes little sense given the Cylons she was with were actually in a weaker position than the humans at that point. In light of what happened later, maybe she should have waited a while before throwing her eggs into another basket.

* This is what is strongly implied to have happened to [[spoiler:[[TheDreaded Acnologia]]]] in ''Manga/FairyTail'' after he [[spoiler:transformed into a Dragon after overusing his Dragonslaying magic.]] Although it was also implied that [[BigBad Zeref]] had some role in the transformation, this trope was apparently a real enough threat to other Dragonslayers that the dragons [[PlayingWithFire Igneel]], [[ExtraOreDinary Metalicana]], [[BlowYouAway Grandine]], [[LightEmUp Weißlogia]] and [[CastingAShadow Skiadrum]] [[spoiler:sealed themselves within [[TheHero Natsu]], [[JerkWithAHeartOfGold Gajeel]], [[LittleMissBadass Wendy]], [[BenevolentBoss Sting]] and [[TheStoic Rogue]] respectively to prevent them from becoming Dragons just like him.]] The former three decided that it was worth [[spoiler:[[ParentalAbandonment leaving their children completely in the dark about what had happened]],]] and the latter two went as far as [[spoiler:[[FakingTheDead pretending to let their sons kill them]]]] in order to preserve the illusion. It is subverted in the case of [[spoiler:Acnologia]] since [[spoiler:he is ''still'' human. He can still transform back and forth between his 'true' human form and his Dragon form, which seems to simply be a far more powerful version of [[SuperMode Dragon Force]].]]

* Inverted by Myria Lejean in Discworld/ThiefOfTime: rather than a human made into a monster choosing to be a monster, she is something inhuman made into a human that ends up choosing humanity's side. (HumanityIsInfectious, but the other incarnating Auditors merely go insane from it).

* When [[spoiler:Tory]] discovered she was a Cylon on ''Series/{{Battlestar Galactica|2003}}'', in contrast to [[spoiler:Sam, Saul, and Galen]], who went all WhatHaveIBecome, it didn't take her long to start seeing the benefits of it and how it meant she was 'better' than humanity, something the ordinary Cylons no longer really boast about anymore though they did [[CulturalPosturing use to]]. She even advised actions that would likely have caused thousands of humans to die in the mid season finale. All of which makes little sense given the Cylons she was with were actually in a weaker position than the humans at that point. In light of what happened later, maybe she should have waited a while before throwing her eggs into another basket.

* In the final season of ''Series/EarthFinalConflict'' the Atavus are introduced. They feed on human LifeEnergy and in so doing make those fed on [[HalfHumanHybrid human/atavus hybrids]] who in turn must feed on others, repeating the process. Even PluckyComicRelief tech girl is unable to resist the urges.
** Not entirely correct. The humans they feed on usually die. The one person they only partially feed on spends most of the season in a coma. The hybrids are created intentionally using the hibernation pods they came out of. Basically, you put an Atavus and a human into such a pod, and the pod somehow turns the human into a hybrid.

** After Ingrid bites her boyfriend Will, he goes from a relatively nice guy who helps wimpier boys open their lockers and was freaked out at the sight of her fangs to living at the castle with her (as opposed to whatever his family situation was before), joining her in mocking her father and brother and admiring her evil plan to trick Count Dracula into getting himself destroyed so she can take over, not to mention being among the crowd of vampires that bare their fangs at the innocent Branaugh family to make it clear that they're on the menu.