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->''"YEAH! Burn his house down! Burning people! He says what we're all thinking!"''
-->-- '''[=GLaDOS=]''', ''VideoGame/Portal2''

A psycho supporter follows someone else's beliefs simply because said supporter is ''nuts''.

Used a lot to deconstruct other tropes, most notably the GenkiGirl, TheDragon, and SycophanticServant. If this character is initially a good guy, a FaceHeelTurn will most likely happen.

May also intersect with the {{Yandere}}, LadyMacbeth, and OverzealousUnderling. A lot of Psycho Supporters also suffer from MadLove or the SubordinateExcuse if they're ''really'' devoted to the leader in question.

Not to be confused with a character who supports a psycho; that's FriendToPsychos.

In real-life situations, they will [[UnwantedAssistance usually]] be seen as [[YourApprovalFillsMeWithShame a liability]] to the [[ContemptCrossfire movement they support]], and will constantly be told to StopBeingStereotypical.

[[noreallife]]
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!!Examples:

[[foldercontrol]]

[[folder:Anime & Manga]]
* In the ''[[Manga/PhoenixWrightAceAttorney2007 Ace Attorney Investigations]]'' manga, Marco Swindell, who is extorting money out of the head doctor of the Jiffy Clinic, is found dead of poisoning. The culprit turns out to be [[spoiler:a patient, Clive Fortuna]], who decided to kill him to free Dr. Jiffy of him. Dr. Jiffy tells the culprit that he finds [[spoiler:his]] devotion touching, but that [[spoiler:his]] crime must be punished.
* ''Manga/AttackOnTitan'': After the timeskip, [[spoiler:Floch Forster]] turns into this, as he's essentially at the forefront of the Yeagerists' worst crimes, gleefully betraying and brutalizing comrades and civilians alike. Whether he's been consulting Eren for his marching orders or simply acting in his master's stead is unclear at best. Either way, he seems to be enjoying the atrocities he commits — a stark contrast to the troubled Warriors.
* Christopher Shouldered serves as this to Firo in the ''Literature/{{Baccano}}'' LightNovels. Thanks to Firo's uncanny [[WeirdnessMagnet lunatic]] [[MagneticHero magnetism]], the flippant, AxeCrazy Christopher decided that they were friends almost immediately upon crossing paths with him. His first order of business is helping Firo find the (not actually) kidnapped Ennis, committing copious amounts of murder along the way. Firo gets a brief reprieve from Christopher when he winds up in Alcatraz and Chris goes to Chicago... only to find himself saddled with ''another'' self-appointed Poisonous Friend, [[spoiler:Ladd Russo]].
* ''Manga/BlackCat'': In the anime, Creed Diskenth takes this to creepy extremes. He has such a constant hard-on for Train that at one point he ruthlessly butchers three intelligence officers for referring to Train as 'that guy'. The kicker is that he does this just after Train, once a heartless assassin, reforms and abandons the life of a killer, deciding to never take another life. Train pays little attention to the fact that Creed goes on a killing spree anytime Train's honour is insulted.
* Uta in ''Anime/BlueReflectionRay'' does believe in the Red Reflector's cause to strip away emotions since she thinks that will create a world more appropriate for her, but she's equally invested in sending others into despair and causing havoc as well.
* ''Anime/CodeGeass''
** Rolo, who has an obsessive devotion to his "brother" Lelouch... so much that he wants to prevent Lelouch from reuniting with his real sibling, and [[spoiler:murders Lelouch's possible love interest when Rolo decides she might get in the way of this goal.]]
** Alicia Lohmeyer is this to Nunnally, as she tries to go behind her back on multiple occasions and take a much more hardline approach, as she cares nothing for the Japanese.
** , Diethard Reid, a TV producer who joins LaResistance not because he agrees with them, but because they're ''epic''. And because he was bored. Later on in season two, Diethard elaborates that the reason he finds them so cool is that he hates the current state of the world and wants it to change... but he doesn't really care ''how'' it changes or who does it, so he follows them just because they are changing things. [[spoiler:[[FairWeatherFriend And thus he will latch onto whichever side he thinks is winning/changing at the current moment]], which gets proven when Lelouch/Zero gets kicked out of the Black Knights and Diethard promptly gloms onto Schneizel with the same fanatical devotion. Unluckily for Diethard, Lelouch had [[CrazyPrepared anticipated such a betrayal]], and Diethard is shot dead by his new master, who has been geassed, the second he tries to kill Lelouch on his behalf.]]
** V. V. is a Poisonous Brother to Charles. He is so devoted to their goal of "a world without lies", [[spoiler:he murders Charles' most beloved consort, Marianne (which has the side effect of setting the events of the series in motion), among other things done behind his brother's back]]. None of this is lost on Charles, who, fed up with V. V.'s lies after a series of failures, [[spoiler:takes his code and leaves him to die]].
* ''Manga/DeathNote:'' Misa is unwaveringly faithful and supportive of Light Yagami -- and also much cruder and more indiscriminate in her use of the Death Note, which Light considers an insult to his goal of punishing only criminals.
** Mikami's even worse, killing exactly a page a day but killing reformed criminals and those that Light thought were redeemable or innocent.
* In ''Anime/DragonBallSuper'', Jiren is this to Universe 11's Pride Troopers. [[spoiler:Pride Troopers all gravitated to him because of his power and they all consider him their friend, but Jiren absolutely refuses to do anything with them, seeing them as stepping stones to his goals.]]
* A lot of characters follow this pattern in ''Literature/{{Durarara}}'':
** [[spoiler:Izaya]] is revealed to be this to [[spoiler:Shinra]]. How bad is [[spoiler:Izaya]] willing to protect [[spoiler:Shinra]]? Well [[spoiler:it all started in middle school when a student named Nakura tried to stab Izaya after trying to bet on him and losing the money because Izaya purposely didn't succeed. Izaya didn't expect anyone to protect him because he was technically getting what he deserved which is why he panicked when Shinra jumps in the way of the knife. Izaya swears that Nakura will regret this for the rest of his life. After that, he stalks Nakura after that incident and continues to keep in touch with him in order to destroy his life when the time is right. He frames him for two major incidents at the end of the novel and outright tells him that those bosses will get him.]]
** Mikado, Kida, and Anri are all willing to be this for the naive, nice people they believe the others to be.
** Walker and Erika are this for Kadota, though he has some idea about what they're doing while he averts his eyes.
* Excel from ''Manga/ExcelSaga'' is a psycho supporter of Lord Il Palazzo. Il Palazzo may be using mind control to gain supporters, but Excel is the only one who acts unhinged around him. She also uses the SubordinateExcuse to hang around him.
* ''Manga/{{Eyeshield 21}}'': Hiromi Kisiragi of the Hakushuu Dinosaurs is a WeakButSkilled cornerback who is absolutely dedicated in his support of team leader Marco and centre Gaou. He is also very quietly insane, preaching a BloodKnight [[TheFightingNarcissist Fighting Narcissist]] philosophy that claims only strength is beautiful. This stems from his past as a weak, bullied chump, and plays directly into his support of [[TheJuggernaut Gaou]] and [[ManipulativeBastard Marco]].
* Yuno from ''Manga/FutureDiary'' is Yukiteru's creepy stalker-for-a-girlfriend. She'll gladly risk her own life to protect Yuki, and she won't think twice about slaughtering anyone who dares to harm him. She's also extremely jealous, and Yuki finds himself struggling to convince her not to kill his friends.
%%** As well as Akise
* Alucard of the ''Manga/{{Hellsing}}'' Organization clearly qualifies as Sir Integra's anti-conscience by the way he is able to stir Sir Integra into giving him the most ruthless orders so he can indulge his bloodlust as well as succeed in whatever mission he is sent to.
* While there are plenty of zealots in ''Manga/{{Hellsing}}'' 'verse, the Iscariots are prepared to commit any sin in the service of the Lord.. because their ultimate goal is to continue the fight [[ToHellAndBack in Hell]].
* ''Franchise/{{Gundam}}'':
** Yazan Gable of ''Anime/MobileSuitZetaGundam'', originally introduced as a PsychoForHire BloodKnight. He's eventually recruited by ManipulativeBastard Paptimus Scirocco, but unlike most of Scirocco's supporters, Yazan has no illusions about Scirocco's goals and seems to be following him purely for [[OnlyInItForTheMoney the long green]].
** Lady Une from ''Anime/MobileSuitGundamWing'' and her not-so-hidden adoration of MagnificentBastard Treize Khushrenada, whom she serves as his [[TheDragon Dragon]]. Her pacifistic "Saint" personality is the one that is most in love with him, but her "bun and glasses" personality is [[TheBaroness exceedingly cold and ruthless]].
*** Treize [[HandWave explains]] to his friend Zechs, and the audience by proxy, that Lady Une developed split personalities due to her feelings for him. She gets better, possessing a combination of "Saint"'s compassion with "Iron Une"'s competence.
* ''Manga/HunterXHunter'':
** [[spoiler:Shaiapouf]]. [[spoiler:His goal is to make the Chimera Ant King's plans a reality, and, when Komugi, the human girl the King has taken in and played Gung-gi against, threatens to have the King turn back on his original plans by having him [[MoeCouplet develop human emotion towards her]], Pouf has an epic breakdown and decides that it would be best to kill himself for the King's former ideals. Like Itsuki from ''Yu Yu Hakusho'' below, his character seems to also have elements of MadLove and HappinessInSlavery added in.]] It's especially funny because what he melts down about is that he almost just killed the girl to get her out of the way, before realizing that if she died his king could never beat her, never get over her, and never ''forget'' about her, and it would be the worst thing he could do. Therefore suicide pact with himself and screaming while he plays the violin.
** The other two Royal Guards are comparatively sane, though they have basically the same worldview. They're just...a lot more matter-of-fact and less romantic about it. Although when Pitou was on the ground in front of [[TheHero Gon]], begging to be allowed to save the life of the blind girl who was "of importance to one who is of importance to me" before Gon proceeded with the revenge killing attempt, that was pretty...[[WhatTheHellHero impressive]].
** Killua Zoldyk knows all about sneaking behind friends' backs to get a morally questionable, if logically justifiable, job done. Unlike most of the rest of his family, however, he tends to keep the body count fairly low and the collateral damage to his relationships as minimal as he can.
* ''Manga/JoJosBizarreAdventure'':
** All of DIO's minions in ''[[Manga/JoJosBizarreAdventureStardustCrusaders Stardust Crusaders]]'', special shout out to Vanilla Ice, who's so obsessed with DIO [[AxCrazy he'll outright KILL anyone who makes him destroy any images of the Vampire]]. Ironically, Ice was ''too'' psycho for [=DIO's=] tastes [[spoiler:to entrust his master plan of "Heaven", which is why Pucci below got the mission.]]
** ''[[Manga/JoJosBizarreAdventureStoneOcean Stone Ocean]]'': [[SinisterMinister Enrico Pucci]], the DragonAscendant of DIO, and also the closest the vampire has ever been to [[HoYay a homosexual relationship]], the main antagonist of Stone Ocean. He has such an obsession with DIO, he's willing to [[spoiler:achieve "Heaven", a secret which was well-kept in DIO's diary, which of course he possesses, and resets the universe]], simply to fulfill his EvilPlan. He might be an insane priest, but he's one amazingly loyal follower. [[spoiler:In fact, it's the fact that Pucci was more stable and an earnest equal than Ice despite his devotion that he got the mission instead]].
* ''Literature/KinosJourney'': Kino meets a woman traveling with the intent of spreading peace, but the man she is traveling with is a highly skilled gunman. He kills people trying to attack the woman and she is none the wiser.
* ''Literature/KyoKaraMaoh'':
** Oddly, some of Shibuya Yuri's most avid followers in are open to this accusation; i.e. following someone because of your own insanity rather than the merits of their position. Yuri's a Demon King, but his goals involve "world peace through people not fighting any more," "not doing his own paperwork" and "playing baseball."
** Gunter--apparently actually an extremely competent academic, highly skilled swordsman, and powerful majutsusha, despite coming off as a brain-damaged SquishyWizard. Being around Yuri just makes him dopey as hell, but also means he intently supports whatever Yuri wants, even when it's counter to every custom of the land.
** Conrad--almost as hypercompetent as he seems, and in fact a decent guy, but ''insane.'' Hard to say whether that first comes through when he tells Yuri that if Yuri gets killed Conrad will 'see him again soon' or when he is firm that to protect Yuri he will kill absolutely anyone, but that's just in the first dozen episodes, and by the end the level of his lifelong codependency issues have been thoroughly plumbed. He quite frankly states that he is this to Yuuri in relation to both Greta and Hube, who respectively tried to kill Yuuri to please her racist guardians and to [[DeathSeeker get Conrad to kill him]], and who Yuuri wants to save and protect when they're disabled afterward. Conrad's first priority will always be Yuuri's safety, no matter how cruel he has to act.
*** He doesn't really believe in this peace thing, but he believes in Yuri. Because it's Yuri. And Yuri is the center of his universe. Because someone has to be.
** Wolfram--well, okay, he's just an eighty-four-year-old teenager in love. Pass.
** Hube--his TheAtoner thing seems weirdly noble and is totally crazy, especially with the DeathSeeker element. Especially crazy when you find out that the sin he was banished for was being a gung-ho commander during the last war and being careless with the troops. Which people don't even hold against him because of all the soldiers who died, they hate him because ''the blind WhiteMagicianGirl everyone loved knowingly worked herself to death trying to heal his casualties''. So he's basically a scapegoat for the whole ruling class' guilt about everything that went wrong in that effed-up war. And then he follows Yuuri with dedication for not entirely buying into that, even though ''he'' still does.
* Paul von Oberstein plays this to Reinhard in ''Literature/LegendOfTheGalacticHeroes'', [[spoiler:purposefully delaying the information that a faction opposing Reinhard was carpet bombing a planet with nukes]] and later [[spoiler:intentionally or unintentionally causing the death of Reinhard's moral compass Kircheis]].
** Walter von Schenkopp occasionally plays this role for Yang Wenli, often suggesting that Yang should consider seizing power for himself, forming his own nation, or [[spoiler:killing Reinhard after being ordered to surrender just as he has the latter dead in his sights]]. This is mostly because Schenkopp honestly feels Yang would do better than the pack of {{Ungrateful Bastard}}s they've been working for who have alternately [[spoiler:ignored intelligence or advice from people smarter than them, and (consequently found themselves staring down the barrels of Imperial particle-beam cannons) or screwed Yang over and/or the Alliance over even after Yang just got through saving their asses]]. One of the prime differences between Reinhard and Yang is that Reinhard listens to Oberstein, while Yang usually rejects Schenkopp's suggestions due to [[HonorBeforeReason his moral code]] and [[BrilliantButLazy general lack of ambition]].
*** Another is the fact that Oberstein is a brilliant strategist where Schenkopp is a bruiser. The former's advice is somewhat better thought out and presented.
* In ''Literature/TheLegendOfTheLegendaryHeroes'', Miran Froaude is this to King Sion Astal.
* Amamiya Yuuhi of ''Manga/TheLuciferAndBiscuitHammer'' instantly pledges his complete loyalty to Princess Sami after she vows to stop the mages' plot to destroy the world so that she can do so ''herself'' with her own fists.
** Although after fighting the mage's golems, befriending his fellow beast knights, and coming to truly love both Sami and the world, he [[spoiler: decides to stop her by his own hands]].
* ''Anime/MagicalGirlLyricalNanohaAs'':
** The Wolkenritter go out to complete the Book of Darkness despite Hayate ordering them not to, [[DownplayedTrope but they do it regretfully and only because they believe it's the only way of saving her]] (which is not far from the truth). They go so far as to [[ThouShaltNotKill avoid killing people]] so that Hayate won't be responsible for murder.
** Reinforce, after seeing that [[spoiler:the Wolkenritter have been absorbed into the book]], targets those she thinks are responsible: [[spoiler:Nanoha and Fate]]. Hayate makes it very clear that this is ''not'' what she wants
* ''Manga/MariaNoDanzai'': [[spoiler:Between his trauma and festering hatred for Okaya's gang, [[TroubledTeen Akihiro Yuda is]] ''[[TroubledTeen not]]'' [[TroubledTeen alright in his head]]. After learning that Maria also wants to kill them and watching her work, Yuda is now obsessed with becoming her instrument, both as a way to be of use to his idol and to [[MustMakeAmends make amends]] to [[ItsAllMyFault Kiritaka]] for [[TakeMeInstead letting him die in his place]]. He even addresses her with the "-sama" suffix when she confronts him, as [[LikeAGodTome he has come to see her as a god]].]]
* Baron Ashura and Count Brocken from ''Anime/MazingerZ'' loyally followed Dr. Hell. The remainder Hell's CoDragons do not count because Pygman and Gorgon followed their own agendas.
* ''Manga/{{Monster}}'': Johan served as Anna Liebert's Poisonous Brother, murdering anyone their pursuers might have possibly used to pinpoint their location before she finally caught on and [[spoiler:shot him in the head. He got better.]] Johan also helps Tenma's promotional woes by killing off all his superiors that were keeping him down.
%%** Roberto, in a thoroughly creepy fashion.
%%* Maki from ''Manga/MyBrideIsAMermaid''.
* Shizuru of ''Anime/MyHime'' could be seen as being one of these to Natsuki; the latter seems pretty horrified when she sees that Shizuru has [[spoiler:destroyed First District Headquarters, and her defeating Yukino and Nao and by proxy killing their loved ones- Haruka, and Nao's mother]] in the name of 'protecting her'.
* In ''Manga/{{Naruto}}'' [[spoiler:[[WellIntentionedExtremist Danzo]]]] is revealed to be one to his {{Rival}}, [[spoiler:The Third Hokage, Hiruzen Sarutobi]]. In an effort to keep the village safe, and prevent the idealistic [[spoiler:Hiruzen]] from having to tarnish his image [[spoiler:Danzo created Root]], a Black Ops organisation that has been involved in all sorts of unpleasant business over the years, all, at least in his mind, for the good of the village.
* In her DeathbedConfession, Baron Hisamichi in ''Manga/OokuTheInnerChambers'' admitted that she [[spoiler: poisoned Yoshimune's older sisters (and a rival claimant to the throne) to ensure that Yoshimune would become shogun. She was ''twelve'' when she poisoned Yoshimune's sisters.]] It's not entirely clear what Yoshimune's thoughts on this were, but their parting was amicable enough.
* ''Manga/OnePiece'':
** Bartolomeo was once a crime syndicate leader, but soon became a fan of Monkey D. Luffy, setting out to sea in hopes of finding him one day. He keeps up to date with all the news regarding Luffy, even knowing of information that the [[OneWorldOrder World Government]] does not want leaked. Bartolomeo finally catches up to Luffy in Dressrosa--while he is normally quite villainous, causing death and destruction wherever he goes, he will gladly support the more heroic Luffy in everything he does (and has thus far been of great help to Luffy). He also cuts the tongues off of or otherwise maims anyone who speaks ill of Luffy within earshot.
** Almost every subordinate member of the Donquixote Pirates falls here. Hell, [[spoiler: Trafalgar Law]] initially joined as a child due to suffering a psychotic break and seeing joining Doflamingo as his best chance to hurt as many people as he could before dying of a terminal illness. Doflamingo's only even become the figure he is today because the four executives of the crew, Pica, Trebol, Vergo, and Diamante, realized the power of his Haki and became his fanatically devoted followers on the spot, to the point of ''burning down a town'' because its uneven pavement caused kid-Doffy to trip. Other crew members are equally fanatical in their devotion, a mentality Doflamingo clearly encourages as it makes them easy pawns.
* TheChessmaster Kyoya Ohtori (and, to a degree, all other male members of the ''Manga/OuranHighSchoolHostClub'') is utterly devoted to the idealistic and naive club founder Tamaki Suou and is not above using dirty tricks and threats to cover up for his blunders from the shadows, which Tamaki generally fails to notice. This is most evident in episode 14 ("Covering the Famous Host Club").
* ''Manga/PandoraHearts'':
** Gilbert is utterly dedicated to his master Oz and will do anything to protect him. Although he hasn't yet killed anyone (onscreen, anyway) for Oz's safety and well-being, he's tried, without any hesitation - despite being the gentlest, sweetest, most pathetic character of the series. However, his backstory flashbacks show that he cold-bloodedly allowed himself to be adopted by an 'enemy house' to become nobility and to steal their secret family weapon (the Chain called Raven), and then became an assassin, all in order to gain the power to save Oz. [[spoiler:It gets very, very worrying when poor Gilbert starts experiencing a nearly overwhelming compulsion to kill Alice, despite the fact that Oz adores her.]]
** Oz himself has had a scary unnatural breakdown in which he wanted to do this for Alice, to stop her from suffering [[spoiler:by killing ''her'']].
** And let's not even get into the absolute {{Yandere}} mess that is [[spoiler:Jack]]. Basically, it's safe to say that nearly everyone in the cast is a Poisonous Friend to someone else.
%%* [[spoiler: Sasame]] from ''Manga/{{Pretear}}''.
* ''Anime/PuellaMagiMadokaMagica'':
** Seemingly played straight with Homura to Madoka, but subverted. [[spoiler: It appears as though she attempts to kill Sayaka for causing Madoka grief as she slowly positions a glowing hand near her chest. However, since Homura fights and kills quickly and efficiently with ''handguns'' or ''explosives'' (especially since her offensive ability with magic is incredibly weak or nonexistent), and she doesn't go for Sayaka's Soul Gem (which had been on the ground at the time and even when she's transformed, it's on her bellybutton), an act that would ''actually'' kill her, it appeared to be an intimidation tactic in order to [[ScareEmStraight scare Sayaka into using a Grief Seed]]]]. She also [[spoiler:tries to kill Kyubey for her sake, but in a previous timeline, Madoka had asked her to keep Kyubey from tricking her]]. In ''[[Anime/PuellaMagiMadokaMagicaTheMovieRebellion Rebellion]]'', however, Homura becomes an [[ExaggeratedTrope extreme example]] of the trope. [[spoiler: Homura literally ''hijacks'' Madoka's goddess powers and imprisons her in a LotusEaterMachine.]]
** [[spoiler:Kirika Kure]] is willing to do absolutely everything for her best friend [[spoiler:Oriko]] (who she's in love with), [[spoiler:to the point where she kills other magical girls because Oriko tells her to.]]
* In ''Literature/RebuildWorld'', Alpha offers her assistance to Akira in exchange for helping her achieve her goals. It's blatantly clear that she's preying on Akira's naivety and sense of gratitude to manipulate him, but it's unclear what exactly she wants from the relic she wants him to track down. She's also frustrated by his growing number of relationships, as it means that she can't manipulate him as easily.
* ''Literature/TheRisingOfTheShieldHero'': While [[BitchInSheepsClothing Malty/Myne]] is ''definitely'' fit for this category and so much more, the one that manages to really sink their [[FantasticRacism racism-laced fangs]] longest is Mald from Itsuki's party. Even his appearance alone is more than enough to tip one off of his [[DumbMuscle uncaring, muscle-headed self]], always taking strides of [[TheBully abusing Itsuki's less-experienced party member's]] [[LackOfEmpathy without a shred of remorse]] and, like the rest of those shitty nobles in Melromarc, [[JerkAss hates demi-humans and anything related to them just for being viewed as "scum"]], as well as always viewing the [[ATrueHero Shield Hero]] as a [[BlatantLies useless, inferior speck of dirt]] [[SelectiveObliviousness despite the massive amount of evidence to the contrary.]]
* ''Manga/RurouniKenshin'':
** Yumi Komagata and her love for the ([[ManOnFire literally]]) flaming Makoto Shishio. At least Yumi is secure in the knowledge that, [[MadLove in his own twisted way]], Shishio ''does'' love her back. [[spoiler: He ''does'' fatally injure her, but then he cradles her in his arms as she dies so [[LetThemDieHappy she can pass away in peace]].]]
** CreepyCrossdresser Kamatari Honjou, on the other hand, is ''fully'' aware that he'll never be loved like Yumi (because he's not a real woman) or favored like Soujirou (because he's not as good a fighter), and yet he is ''still'' obsessively loyal to Shishio to the point that Misao has to knock him out and Chou has to ''lie'' to him in order to keep him from [[{{Seppuku}} killing himself in disgrace]] after he fails to carry out Shishio's last command to him.
** And then there's [[EvilGenius Hoji]], who is clearly insane. He follows Shishio out of a near fanboyish belief in the latter's ability to change the world, and [[spoiler: kills himself at the end when he realizes that he won't be able to spread Shishio's philosophy to the rest of the world]]. But he gets to go help Shishio and Yumi conquer Hell! Look how happy he is when Shishio asks if he's coming!
* Fiore from the ''Manga/SailorMoon R'' movie is a textbook example; obsessed with his friendship with Mamoru to the point that he'll destroy Earth for his sake, even though that's not at all what Mamoru wants.
* Ni Jieni in ''Manga/{{Saiyuki}}''. Interesting in that he is both a Psycho Supporter of Gyokumen.
** Arguable since it's very possible that Ni Jieni is the one manipulating Gyokumen.
** At any rate, just using her. He's psycho, and he's backing her up, but his psychosis doesn't instill loyalty or associate him with her cause.
* Ukuleleman from ''Anime/SpaceDandy'' is a huge fan of Space Dandy (the character), particularly in awe of his smile. Ukuleleman likes Dandy's smile so much that he invites Dandy to come visit his planet, where he intends to kill Dandy while he's smiling and preserve him as a statue so that Ukuleleman can admire Dandy's smile forever.
* Ralph Werec from ''Anime/StrainStrategicArmoredInfantry'' is one of these, and relies on the expectation of MadLove as a motive; he only pretended to be in love with Vivian Medlock and to have made his FaceHeelTurn for her sake. His motivations were far more scarring ([[GoodScarsEvilScars in more ways than one]]) and left him flat-out insane, and once [[YouHaveOutlivedYourUsefulness Captain Medlock outlives her usefulness]], he turns on her too.
* ''Manga/{{Trigun}}'':
** [[TheDragon Legato]] in the manga who decides to torture and kill Vash while Knives, the BigBad, is recovering from his last encounter with Vash, knowing that Knives will kill him when he wakes up.
** Also Wolfwood, most notably when he shoots Zazie the Beast, who looked like he might have been calming down. [[spoiler:Vash's idealism has infected him so badly by this point that he ends up feeling horribly guilty over everyone else's reactions, which eventually gets him killed.]]
* Subverted in ''Literature/TheTwelveKingdoms:'' In the last arc, Kouya initially appears to be a Poisonous Friend to his leader, Atsuyu; he murders dissidents regularly and claims to have "exiled" them when Atsuyu, who is presented in a positively saintly light, asks. However, Atsuyu is revealed to be a ManipulativeBastard who abuses Kouya's extreme loyalty to get away with atrocities while keeping his own hands clean.
* Michiko of ''Anime/{{Texhnolyze}}'' is a seemingly quiet secretary/driver for Onishi. Then we see her collecting the Texhnolyze parts, many of which are still attached to living people...
* Kuroi from ''Manga/ThouShaltNotDie'' to Mashiro. He will protect her with his life... and also murder anybody who harms her, looks at her funny, or even simply gets too close to her.
* In ''Manga/{{Trigun}}'', Dominique the Cyclops seems to be following Legato like this, just as Legato follows Knives (which is far more obvious in the manga than the anime). Knives isn't exactly sane either, though.
** Dominique never gets much character development. Legato, though...even the comparatively sane anime version of him is, in fact, fucking nuts, and this is presumably most of the reason he's so dedicated to helping Knives KillAllHumans.
** Since Knives himself isn't human, his desire to kill them could be considered rational in light of his and his species experiences with them. But any human who knows the extent of his omnicidal plan and follows him anyway would be a psycho supporter. Legato hates all humans including himself and believes they deserve to die, an attitude which Knives considers enlightened for him.
%%* Dilandau in ''Anime/TheVisionOfEscaflowne''.
* Yubel from ''Anime/YuGiOhGX'', one of Judai's Duel Monsters, whom he apparently sent into outer space when [[{{Hermaphrodite}} they]] started killing anyone who defeated or upset him. They now hold a homicidal grudge against Johan because of his friendship with Judai. [[spoiler:They get better after they and Judai fuse their souls.]]
* Itsuki from the ''Manga/YuYuHakusho'' anime ''loves'' [[BigBad Sensui]] because... Sensui is beautiful. In all kinds of senses, with a stress on the functional beauty of tremendous power.
** In the manga, where Itsuki is more twisted, it's because he's gotten the opportunity to see all that [[IncorruptiblePurePureness purity]] get twisted and warped and spit out a shattered genocidal maniac who's more powerful than ever and still charismatic and brilliant. He compares it to [[CorruptTheCutie "a little girl who believes babies come from storks growing up to star in pornos"]]. He loves that kind of thing. He plays this ''so'' straight.
** [[DarkMessiah Sensui]] is an odd subversion: due to his BlackAndWhiteInsanity, he developed a new split personality each time he needed to do something he considered evil, leaving his central persona pure.
[[/folder]]

[[folder:Comic Books]]
* ''ComicBook/{{Batman}}'':
** Depending on who is writing, Batman is this to the ComicBook/{{Justice League|OfAmerica}}, and the superhero community at large. Hard not to be when your teammates stumble across detailed plans on how to kill each and every one of them in case they go rogue and have to be put down.
*** He's this especially to ComicBook/{{Superman}}.
*** Although Batman did at one point say that he trusted the Justice League to be the ones to take him down, should he ever [[FaceHeelTurn go rogue]].
** Some comics have played with the idea that Harley Quinn of ''Franchise/{{Batman}}'' was at least slightly cracked ''before'' she met ComicBook/TheJoker and that he simply unleashed her inner crazy, or that she'd still be just as nuts were he out of the picture. When it comes to her successor, Punchline, there's no ambiguity at all: she's nuts. Having watched the Joker during his career, she decided as a college student [[StrawNihilist his worldview]] [[ForTheEvulz fit in nicely with her own,]] and she actively sought him out in order to join him (before murdering her dean to prove her loyalty). It's perhaps for the reason that she seems to have more of Joker's respect than Harley initially did.
* ''ComicBook/BirdsOfPrey'': ComicBook/{{Huntress}} was this to ComicBook/BlackCanary in pre-reboot series. She was extremely loyal to the Canary personally, but there was no question that she remained one of, if not the, darkest antiheroes in the DC universe. Interestingly, however, she did moderate her behavior so that Canary would be comfortable working with her; Canary did not really see Huntress' dark side until Huntress was about to throw Yasemin off a building and Canary had to talk her out of it. Canary made her final decision to leave the group directly after this incident, which seems not to have been a coincidence.
* ''ComicBook/{{Bone}}'': The Hooded One is devoted to the Lord of the Locusts and is content with helping him bring about the apocalypse.
* ''ComicBook/CaptainAmerica'': One of the interpretations of Captain America's sidekick ComicBook/{{Bucky|Barnes}} was as the guy who did the backstabbing Cap was too moral to do.
** Another is that Cap wasn't too moral for that kind of work, but that his public image could not be so sullied. There are several instances where Cap is portrayed as accepting, even approving, of Bucky's "extracurricular activities," although there are quite a few where he is not.
** Averted in the [[ComicBook/UltimateMarvel Ultimate universe]], where Cap fights the way a real soldier would.
* ''ComicBook/IdentityCrisis2004'': DC Comics' controversial storyline turned a small group of lesser Franchise/JusticeLeague members into this for the League at large. While the Big Three heroes like Superman, Batman, and Wonder Woman went about living and acting on their ideals, lesser members would do necessary "clean-up" jobs to preserve the League's secrets, primarily by having Zatanna wipe minds and reprogram someone's personality. Used as a {{Retcon}} to explain away events where the villains learned (or should have learned) the identities of various heroes, but never acted on them.
** Especially applied to the odd devolution of Doctor Light from a physics genius able to make light waves sit up, roll over, and otherwise do basically impossible things (i.e. turning afterimages into explosive holograms) who could convincingly take on the whole Justice League into a ButtMonkey with a ray gun that was basically a suped-up flashlight, who regularly lost to the Teen Titans. What happened to him caused many villains, and heroes, to look at the Justice League as having crossed a MoralEventHorizon.
* ''ComicBook/TheIncredibleHercules'': Glory to the Chaos King.
* ''ComicBook/JohnnyTheHomicidalManiac:'' NNY meets a fan who idolizes and copycats his work because he thinks it's ''just that cool''. NNY is outraged because he doesn't kill for the fun of it -- he does it because he needs the outlet to survive his role as a "Flusher" for the world's negativity. (NNY then proceeds to do to the copycat what he does to everyone.)
** Also, oddly enough, this becomes an example of EvenEvilHasStandards as well. It is implied by NNY's killing rant that the impostor raped a woman, and that NNY would "never do...that". (Though, this may be more because NNY loathes physical contact than anything else.)
* ''ComicBook/JudgeDredd'': Halfway through the story "The Torture Garden", Chief Hershey discovers that one of the members of the strike team she sent to take out the Dark Judges on Dominion falsified his records, and is in fact an AxCrazy nutjob. Sure enough, he turns out to be a secret Death Cultist [[spoiler:who also smuggled in Judge Fear as a WillingChanneler.]]
* ''Franchise/MonsterVerse'': In the ''Film/KongSkullIsland'' graphic novel sequel ''Skull Island: The Birth of Kong'', [[Characters/MonsterVerseSkullIslandExpedition Riccio]] is this. As his SanitySlippage progresses, it becomes more and more clear that he's this regarding his initial respect for the Iwi and his reverence for Kong as a divine being, what with the actions he takes to endanger the Iwi and his conviction Kong is the only thing in the world that matters.
* ''ComicBook/{{Nexus}}'': Kreed was a super-strong alien called a Quatro who had lived all his life as a member of an assassin's guild. Killing was the only thing he knew how to do, but he had come to find it pointless. When he learned of Nexus, he came to revere him as a man who had learned how to use those skills in a worthwhile cause, and he followed Nexus unquestioningly like a loyal puppy, even at times when Nexus himself was showing terrible judgment, and Kreed would threaten terrible violence to anyone who he perceived as a threat to his hero. When Nexus finally decided he trusted Kreed enough to send him on a mission -- to hunt down and execute a list of murderers for the [[SufficientlyAdvancedAliens Merk,]] a task Nexus himself had always despised -- Kreed and his fellow Quatro Sinclair went mad with bloodlust, going on a wild killing spree that Nexus was only able to halt after countless innocent people had been already killed.
* ''ComicBook/{{The Outsiders|DCComics}}'': The Outsiders have had three different incarnations over the years. They were founded by Batman, whose ties to the League had become strained. He has stated his intent to use the team as a black ops version of the Justice League, able to take the proverbial "fall" in public opinion where the League cannot.
* ''ComicBook/SpiderMan'': In one issue of ''ComicBook/TheAmazingSpiderManJMichaelStraczynski'', Spidey defeats the villain-of-the-month using a modified version of a plan he had to take down the Hulk, and mentions that most of the Marvel Universe's heroes have plans for taking each other down, although it isn't something they like to talk about.
* ''ComicBook/TheTransformersIDW'': Megatron's ideology was [[FantasticRacism already]] pretty [[RobotWar extreme]], but Tarn of the Decepticon Justice Division, introduced in ''ComicBook/TheTransformersMoreThanMeetsTheEye'', is ''worse''. Even ''Megatron'' comes to see him as a dangerous maniac. To anyone less than Megatron, he's TheDreaded.
* ''ComicBook/XMen'': Professor Xavier has made contingency plans to take down all of the other X-Men at one point. Given the number of times a hero's gotten {{Brainwashed}} or hypnotised or had some other EnemyExchangeProgram weirdness happen to them, [[ProperlyParanoid that probably isn't such a bad idea]]. The fact that he included one for taking ''himself'' down probably mitigated any hard feelings.
[[/folder]]

[[folder:Fan Works]]
* In ''Fanfic/ACrownOfStars'', former BigBad Winthrop was a psychopath, a rapist and a blood-thirsty dictator. His DragonWithAnAgenda -and current BigBad- Jinnai was a paranoid, megalomaniac, power-thirsty, rapist, raving lunatic. And after replacing his former boss he got ''worse''.
* In ''Fanfic/AForceOfFour'', Badra is completely committed to carry out [[WarGod Mars]]' plan to destroy Earth because she's also a raving, mass-murdering lunatic.
* Narcissa Malfoy in ''Fanfic/ForLoveOfMagic'' undergoes HeelFaceBrainwashing after Harry kills her husband in a duel. Within a couple years, her devotion to Harry is explicitly compared to her sister's towards Voldemort, including believing he should rule the world. Harry dislikes it, but has just enough morals left to not [[YouHaveOutlivedYourUsefulness kill her even though he doesn't actually have a use for her anymore]].
* ''Fanfic/HellsisterTrilogy'' has Nemesis, a blood-thirsty, mass-murdering half-[[ComicBook/{{Supergirl}} Kryptonian]] raised by ComicBook/{{Darkseid}} who considers it's his duty to ensure that his god's will to conquer everything and enslave everyone be fullfilled.
* In ''Fanfic/KaraOfRokyn'', Cyber and Starfire -not ''that'' ComicBook/{{Starfire}}- are two nutjobs who think ComicBook/LexLuthor is a misunderstood genius and do his bidding slavishly.
* ''Fanfic/TheNewAdventuresOfInvaderZim'': Season 2 newcomer Nyx is Zim's self-described biggest fan, and also happens to be [[BombThrowingAnarchists completely nuts]].
* As the story progresses, the Barty Crouch Jr. of ''Fanfic/TheParselmouthOfGryffindor'' grows more and more delusional about the extent of Voldemort's power, referring to his fallen master as though he'd been some sort of disembodied, immanent god of darkness. (He is still massively dangerous, however.)
* Chiron in ''Fanfic/SOE2LoneHeirOfKrypton'' is Gendo's subordinate and he's even more depraved, more blood-thirsty and pettier than his boss. Gendo is a Manipulative Bastard and an asshole, but he's pragmatic: he doesn't go out of his way to mess someone up and he may deem torture as necessary but not enjoyable. Chiron? Chiron enjoys it.
[[/folder]]

[[folder:Films -- Animated ]]
* ''WesternAnimation/BatmanBeyondReturnOfTheJoker'': We see that Nanna Harley paid Delia and Deirdre Dennis' (better known as Dee Dee, Harley's granddaughters) bail to keep them out of jail. Even when Harley was calling them out, she ''paid their bail''. In an alternate timeline, those two managed to kill all the Justice League.
* Implied with Le Fou in ''WesternAnimation/BeautyAndTheBeast''. Not only does he continue to follow Gaston and like him despite being treated like trash, but the literal translation of his name is "The Fool" or "The Madman".
* Zira in ''WesternAnimation/TheLionKingIISimbasPride''. Besides being a loyal follower of Scar, she’s also pretty obviously crazy by the end of the film. Even the other outsiders have enough and go back to Simba’s side. Zira just ends up dying when she won’t let go of her fanaticism.
[[/folder]]

[[folder:Films -- Live-Action]]
* The photojournalist played by Dennis Hopper in ''Film/ApocalypseNow''.
* ''Film/TheDarkKnight'' incarnation of the Joker's various minions have a healthy proportion of madmen among their numbers, who follow him because of his own crazed will.
* ''Film/{{Downfall}}'' presents Magda Goebbels, wife of Joseph Goebbels, as one of the more fanatical believers in the tenets of National Socialism in the bunker, to the point of BlueAndOrangeMorality. She's arguably even ''more sociopathic'' than ''Hitler is''. In the end she [[OffingTheOffspring poisons all six of her children]] because she believes that it would be [[MercyKill merciful]] compared to allowing her children to grow up in a world where Jews and homosexuals are allowed to live.
* In ''Film/FromDuskTillDawn'', Richie is unquestionably devoted to his more mature brother Seth. Of course, this could be simply because they're brothers. On the other hand, Richie seems to enjoy - really ''[[ForTheEvulz enjoy]]'' - being a criminal in ways that [[EvenEvilHasStandards even Seth finds repellent]]. When Richie rapes and murders a woman the brothers were holding hostage, for instance, it's hard to tell if Seth is upset because he's ashamed of Richie or because [[PragmaticVillainy Richie's psychosis has put a crimp in their carefully-laid plans]].
* ''Film/HappyGilmore'': Shooter [=McGavin=] is more than happy to use his borderline stalker as a weapon against Happy Gilmore, up to and including [[spoiler:running him down with a VW Beetle on a fairway]], so long as he can get away from him as fast as possible afterwards.
* In the horror movie ''Film/{{Nightwish|1989}}'', a MadScientist who uses his graduate students as bait to investigate poltergeists at an OldDarkHouse, makes use of several patients from a mental asylum to control them because they're easy to order around.
* ''Film/RepoTheGeneticOpera'' has the three Largo children for their father Rotti, and later, [[spoiler:Luigi and Pavi for Amber in her bid to get control of Gene Co]]. In both cases, the leader isn't really outright evil until you take into account that not only do they turn a blind eye to the activities of their supporters, they actively enable them. Pavi Largo is the creepiest example of this; he seems fairly well adjusted as far as scarred sex addicts go until the crazy comes out to play.
* ''Franchise/{{Saw}}'': Most of the Jigsaw Killer's apprentices and major accomplices willingly follow him and support his cause as a PoeticSerialKiller. Amanda in particular came to embrace his twisted ideology and views him as a father figure. However, they usually [[BastardUnderstudy end up screwing his philosophy in different ways]].
[[/folder]]

[[folder:Literature]]
* From the ''Literature/AlexRider'' series: Conrad, TheDragon of General Sarov. Sarov at least has a noble goal from his mindset. Conrad just wants to kill things.
* The Vengeance in ''Literature/ATaleOfTwoCities''
* In Patrick O’Brian's ''Literature/AubreyMaturin'' novels, the dual protagonists are frequently ''each other's'' poisonous friend: each man has been known to aid his dearest friend’s missions by conducting hostilities in ways that are appalling to the latter’s sensibilities or morality--the swashbuckling captain Jack Aubrey with large-scale naval carnage, the surgeon/intelligence agent Stephen Maturin with cold-blooded assassination and deception.
** Maturin also [[ArsonMurderAndJaywalking reads other people's mail]]. Aubrey is not cool with that.
*** And, on the flip side, while Aubrey is by no means a "[[BadBoss flogging captain]]" he uses the lash sometimes, much to Maturin's displeasure.
* Valentinian in ''Literature/BelisariusSeries'' has some aspects of this; not only is he Belisarius' bodyguard, but he is also his personal executioner and hatchet man. When Belisarius wants some shocking bit of violence done he simply says "Valentinian..." which is shorthand for OffWithHisHead.
* [[Literature/TheBible The Biblical figure]] of Joab in [[Literature/BooksOfSamuel Second Samuel]]. As King David's general, he frequently performs David's dirty work including orchestrating the death of Uriah the Hittite (on David's orders) so David may marry Uriah's widow, Bathsheba, and executing David's son Absalom for rebellion, against David's orders. While Absalom's death enables David to remain king, David publicly mourns for Absalom. Even then, David didn't technically give the order. Solomon gave the order on his behalf after yet another betrayal and David confiding in him about Joab's past actions.
* In the sequel to ''Literature/CharlieAndTheChocolateFactory'', ''Literature/CharlieAndTheGreatGlassElevator'', the President's [[GeneralRipper chief general]] is a PsychopathicManchild. ("[[StuffBlowingUp Let's blow everybody up!]] [[SayingSoundEffectsOutLoud Bam bam boom blam blam!]]") The President and the Vice-President have to constantly keep him from going rogue...and he does respectfully, if unhappily, defer to them, thus fitting this trope.
* ''Literature/TheCulture'': The whole purpose of Contact's ''Special Circumstances'' division.
* Vimes and Vetinari in ''Literature/{{Discworld}}''.
** Vimes's butler Willikins is this to Vimes. He has been for a long time, but as of ''Snuff!'' he identifies as such.
* Monk Mayfair is just short of this to ''Literature/DocSavage''. Creator/PhilipJoseFarmer theorizes that in addition to Savage needing someone who can kill (and lie, steal and seduce), Mayfair's obvious enjoyment of these gives Savage vicarious pleasure.
* ''Literature/TheDresdenFiles'':
** Rare protagonist example: Harry Dresden to [[ThePaladin Michael Carpenter]], his good friend, who is a (literal) KnightInShiningArmor and has an uncompromisable code. There are times when Harry will lie, strike, or kill someone Michael cannot harm without breaking his moral code. The first example of this happening is in ''Death Masks'', he asks Michael to leave the room while he [[ColdBloodedTorture breaks the legs]] of Quintus Cassius. He later talks Michael out of beating to death the man who kidnapped and threatened the life of his daughter, simply by saying that if it has to be done, ''Harry'' will do it.
** And then Ebenezar is something of a PapaWolf Poisonous Friend to Harry and the White Council. [[spoiler:Ebenezar is the "Blackstaff", the assassin of the White Council who has the sole directive to protect the Council when abiding by the Laws of Magic will end them in a worse place. He has used magic to kill thousands of people. It is only because the Staff absorbs the black magic that would taint Ebenezer can he remain a good person.]]
* Suzette, Lady Whitehall in ''Literature/TheGeneralSeries''. She's the wife of the straightforward and honest Raj Whitehall, who survives the Byzantine machinations of the Governor's court despite his total lack of aptitude for such things... because Suzette is entirely happy to seduce and manipulate his rivals, poison his enemies, and arrange for obstructionist officials to be quietly dropped into the river with a sixty-kilo roundshot chained to their ankles, all without telling him. Disturbingly, he is ''well aware'' of what she is doing and yet is on occasion preachy about the morality of doing it.
* ''Literature/TheGirlAndTheGhost'': Suraya tells Pink not to use his powers to hurt people, even the ones who bully her. He does it anyway, though subtly enough that he hopes she won't notice. She is not pleased when she catches on.
* Lord Montfallcon does this for a living in ''Gloriana'' by Creator/MichaelMoorcock, working behind the scenes to maintain order because he fears his queen's idealistic policies aren't enough to secure the realm's new golden age.
* ''Literature/HarryPotter'':
** Among the [[Characters/HarryPotterDeathEaters Death Eaters]], Bellatrix Lestrange. WordOfGod states that "[[{{yandere}} her true love was always Voldemort]]," but he had no discernible affection for her, [[LoveMartyr merely using her loyalty]]. She even had a ''[[Theatre/HarryPotterAndTheCursedChild child]]'' with the man, despite him being a [[EvilMakesYouMonstrous hideous snake-man]]. Likewise Barty Crouch Jr. and a few others who are truly {{Sycophantic Servant}}s and not in it for the power involved.
** Dolores Umbridge in ''Literature/HarryPotterAndTheOrderOfThePhoenix'' knows that Cornelius Fudge would never permit her to [[spoiler:use the torturous Cruciatus Curse to get information out of Harry and his friends]], but as she says, "What Cornelius doesn't know won't hurt him". Even the book synopsis on the dust cover describes Umbridge as having "a personality like poisoned honey."
** In a more complex way, and probably not intentionally, it's Snape for Dumbledore, being the Bad Teacher for Harry (Dumbledore obviously being the good one). His constant nitpicking, bickering, and sneers served to harden Harry's spirit and supposedly not to get a swollen head. Not that it was pleasant, or remotely useful, given that Harry [[HumbleHero hated the fame from the beginning]] and already had to go through the traumatic experience of being a murder target almost every year. Not that it was ''successful'', either, since not only did Harry already arrive at the school detesting excessive fame and attention thanks to the Dursleys' treatment, Snape's treatment also caused Harry to constantly suspect Snape of evil through all of the books, which almost allowed Voldemort to win several times (a notable example being the first book, where Harry attempting to prove the wrong person guilty gave the ''real'' Voldemort ally too big of a lead).
* The Dennis Hopper character in ''Film/ApocalypseNow'' was modeled on "The Harlequin", a young Russian man in a harlequin-like suit in Joseph Conrad's ''Literature/HeartOfDarkness''. He views the AntiVillain of the novella, Kurtz, as some sort of religious cult figure (of course, Kurtz is plenty psychotic himself) -- and it is implied (cautiously, as the story was written in 1899) that [[HoYay he and Kurtz have been in a homosexual relationship]].
* [[TheJeeves Jeeves]] of ''Literature/JeevesAndWooster.'' Frequently puts others, including Bertie himself, through the wringer in order to restore [[StatusQuoIsGod the status quo]], and has been known to interfere in Bertie's relationships and deliberately drive away prospective fiancées--all for his own good, of course.
* [[TheFairFolk The Gentleman with the Thistledown Hair]] in ''Literature/JonathanStrangeAndMrNorrell'' gets it into his head that working as a butler constitutes abuse for Stephen Black, and decides that because he's handsome and courteous, he needs to be king of something. He even tries to get him to [[YouKillItYouBoughtIt kill the king of England for this reason]], and Stephen has to explain that it doesn't work like that.
** There's a dark sort of OverlyLongGag late in the book where The Gentleman tells Stephen a rambling story of the lengths he went through to find Stephen's "true" name and the many people he ended up murdering directly or indirectly in the process.
* The ''Literature/KnightAndRogueSeries'' has a mild example in Fisk. While Michael is so righteous that he won't even tell a white lie, and encourages Fisk to follow this example, Fisk is willing to lie or con his way out of a situation when need be-usually when Michael isn't looking. He becomes less of one by the third book, though.
* Captain Badaya ''would'' be this to Admiral Geary in later volumes of ''Literature/TheLostFleet'' series, leading a faction of the fleet that would back him in a full-blown coup... except that Admiral Geary, who's considerably smarter than Badaya as well as {{Incorruptible|PurePureness}}, successfully bluffs him into thinking he's blackmailed the government into making him TheManBehindTheMan instead.
* In ''Literature/TheLostStars'', one of [[TheHero general Drakon]]'s aides is colonel Roh Morgan, who, in addition to being an excellent assassin and bodyguard, is a bloodthirsty madwoman who has to be held back from murdering everyone she sees as a threat and who latched onto Drakon with enthusiasm of a {{yandere}} because she's convinced she's destined to [[spoiler:give birth to his child, whom she intends to raise to conquer all of human space]]. When Drakon realizes just how badly messed up she is, he's horrified.
* The CorruptCorporateExecutive Cassandra Cautery is all kinds of this to Dr. Charles Neumann in Max Barry's ''Literature/MachineMan''. She claims to have his best interests at heart but is clearly only looking out for Better Future.
* ''Literature/NoLongerHuman'' has Horiki, who also has a convenient habit of showing up just as the protagonist Yōzō is about to recover from whatever ails him.
* In [[Literature/{{Okuyyuki}} "Okuyyuki"]], the sentient sword nicknamed [[ICallItVera Audrey]] is quite the HungryWeapon--not really villainous, but she can come across as an example of this trope. Some of this is DeliberateValuesDissonance, since she was forged in an ancient warrior culture with somewhat different standards of conduct than present-day America.
* [[AlphaBitch Zadie Smith]] of ''Literature/ReconstructingAmelia'' is this to her best friend Dylan, who's sweeter, quieter, and has a much harder time standing up for herself -- including standing up to Zadie. Zadie genuinely cares for Dylan... and this drives her to [[spoiler:out her girlfriend Amelia, which indirectly leads to Amelia's death]], for Dylan's "own good." Rather than humanizing Zadie, their friendship makes Zadie ''[[TeensAreMonsters terrifying]]''. It doesn't help that there are some [[AmbiguouslyGay undertones]] that imply that [[spoiler:Zadie hates Amelia because she [[ClingyJealousGirl wants to]] [[IfICantHaveYou keep Dylan]] [[{{Yandere}} all for herself]].]]
* The novel ''Shady Corners'' by Mathew Williams has a Poisonous Friend as the ''protagonist''. It's every bit as creepy a read as you'd expect.
* In ''Literature/ASongOfIceAndFire'', being Cersei Lannister's enemy is a hassle, but being her friend is, arguably, even worse. Everyone she has ever associated herself with has suffered for it. Even if Cersei means well going in ([[FalseFriend she doesn't always]] -- just ask Sansa or Lancel), she's still at heart a [[{{Narcissist}} narcissistic]], [[SmallNameBigEgo overly-proud]], [[EntitledBastard entitled]], [[PsychopathicManChild overgrown]] RoyalBrat with a tendency towards [[TheAlcoholic alcoholism]] and BlackAndWhiteInsanity. So, even if she likes somebody, she'll wind up screwing them over with it because she just can't do healthy relationships thanks to her skewed paranoia either being a little too catching or being liable to go off at the wrong time at the wrong thing. Even with best intentions, since secret, "bold" MurderIsTheBestSolution or LetsYouAndHimFight actions done behind other allies' backs to help finish the problems they're all dealing with can backfire when the [[DisasterDominoes knock-on effects start to stack up and interact]]. '''''Badly'''''.
* ''Franchise/StarWarsLegends'': ''Literature/XWingSeries'' had TheSpymaster of TheEmpire, Ysanne Isard. She was TheSociopath and fanatically loyal to TheEmperor because they were both [[DespotismJustifiesTheMeans power-hungry]] {{sadist}}s, to the point she even became his lover. Palpatine, on the other hand, didn't trust her as far as he could throw her (without the Force) and feared that she'd attempt a KlingonPromotion on him [[SelfMadeOrphan like she did her father]].
* Creator/StephenKing's thriller ''Literature/{{Thinner}}'' gives us an anti-heroic example: Protagonist Billy Halleck is cursed to die by a pack of traveling Gypsies after accidentally killing the leader's daughter. Billy's best friend, mafioso Richie Ginelli, responds by poisoning their guard dogs, shooting up their camp (without killing anyone), and assaulting the clan leader's granddaughter. The old leader takes the curse off, but Ginelli is killed by said granddaughter in the end.
* In ''Literature/{{Victoria}}'', John Rumford becomes one to President Yancey, General Laclede, and the other Neo-Confederate leaders through his ruthless solution to the Atlanta insurrection, which he then gives them credit for.
* ''Literature/{{Warbreaker}}'' features Nightblood, a magical sentient sword forged to smite evildoers on behalf of the forces of good. Unfortunately, he doesn't really have any comprehension of what evil ''is'' since he's an inanimate object with no real moral compass of his own. As a result, he mostly just wants to [[HeroicComedicSociopath kill everyone in sight on the off-chance that they're bad guys]].
* ''Literature/TheWheelOfTime'':
** Perrin's loving girlfriend and wife Faile in . Besides being a very jealous type and giving him a hard time over any woman she suspects might want him, she also indulges in all the dirty aspects of politics he considers to be wrong, including sabotage, espionage, manipulation, and assassination. Some of those things he tells her not to do, but she doesn't listen. The rest, he chooses not to ask about or think about too closely.
** There is Masema, a fanatic devoted to serving [[MessianicArchetype the Dragon Reborn]], whether he wants it or not. He raises a rabble and mostly terrorizes the countryside. The Dragon makes some perfunctory efforts to get him under control, but in the end he has to be put down.
[[/folder]]

[[folder:Live-Action TV]]
* Connor on Season 4 of ''Series/{{Angel}}'', regarding his loyalty to Jasmine (with maybe an unhealthy dose of PapaWolf thrown in for good measure).
* In ''Series/{{Arrow}}'', when Oliver reveals himself as Green Arrow and goes to prison, he meets a friendly yet maladjusted convict named Stanley Dover who idolizes Oliver and claims he was wrongfully labeled a killer. [[spoiler: Not only is he a ''serial'' killer, but once he escapes, he begins to stalk Team Arrow and hold Oliver and his family hostage thinking they can be together.]]
* Saul Tigh on ''Series/{{Battlestar Galactica|2003}}''. He's best friend to Commander/Admiral Bill Adama (Galactica's resident beloved leader). He's usually the guy rooting for a good fight rather than diplomacy, and occasionally, is right in doing so. But he's a liability. Time after time after frackin' time, Adama goes out on a limb for Tigh - hiding the truth of his alcoholism, appointing him XO even though he's "not cut out for command", and whitewashing, then forgiving, most of Tigh's screwups (including shooting civilians aboard the ''Gideon'', a military dictatorship, the use of suicide bombers on New Caprica, and showing up drunk to testify at Baltar's trial). Though he occasionally has to ShootTheDog to keep the blood off Adama's hands (see the entire New Caprica arc and the S3 episode "Hero"), one shudders to think how far [[spoiler:a Saul Tigh who's realized he is, in fact, the very thing he's been fighting for so long]] will go in the service of Bill Adama.
** In an odd case, Tigh himself has his wife Ellen, who encourages his alcoholism and tries to get him to be more assertive and ambitious. And betrays resistance plans to the Cylons to keep him alive. [[spoiler:However all of this is now in the past tense as he poisoned her for this last. Supposedly someone else in the resistance would have done something worse to her otherwise]].
*** He is this way up until [[spoiler:he learns that he is a Cylon]]. It is very likely his destructive behavior and drinking were his way [[spoiler:of internally dealing with his "sleeper" status, and keep himself from doing something fatal to Galactica and Adama]], but YMMV...
* [[VillainProtagonist Walter White]] is this to [[AntiVillain Jesse Pinkman]] in ''Series/BreakingBad''. While Jesse wasn't completely innocent before getting into business with Walt, it's undeniable that his life has taken a definite [[BreakTheCutie turn for the worse]] because of Walt's influence. [[spoiler:Walt even manages to manipulate Jesse into killing Gale in cold blood.]] Jesse is equally poisonous to Walt, if usually unintentionally, and in a completely different way: while his sincerity might be debatable, we continue to see Walt go to impressive lows in order to ensure Jesse's safety, despite the fact that he is an emotionally volatile wild card and a liability. Add this to the fact that Jesse is the one who gets Walt into the drug business in the first place, and you have a recipe for one of the most mutually poisonous friendships on television. One so toxic, it has a collateral death count of [[spoiler: close to a hundred, if not ''in'' the hundreds]].
* ''Series/BuffyTheVampireSlayer'':
** Caleb of the First, whom he basically sees as God.
** Giles on several occasions, in particular beating the crap out of Ethan in "[[Recap/BuffyTheVampireSlayerS2E6Halloween Halloween]]", killing Ben in "[[Recap/BuffyTheVampireSlayerS5E22TheGift The Gift]]", and plotting with Robin to kill Spike in "[[Recap/BuffyTheVampireSlayerS7E17LiesMyParentsToldMe Lies My Parents Told Me]]". And [[spoiler:sending Faith to kill Gigi]] in the Season Eight comics. He even gives a nice speech about it in "The Gift".
--->'''Giles:''' No she couldn't [have killed you]. Never. And sooner or later Glory will re-emerge, and make Buffy pay for that mercy—and the world with her. Buffy even knows that, and still she couldn't take a human life. She's a hero, you see. She's not like us.\\
'''Ben:''' ... Us?\\
''[Giles calmly suffocates Ben]''
** Believing that Buffy is compromised by her love for Angel, Xander tries to ensure his demise on two separate occasions, "[[Recap/BuffyTheVampireSlayerS2E22BecomingPart2 Becoming, Part Two]]" and "[[Recap/BuffyTheVampireSlayerS3E7Revelations Revelations]]", first by not telling Buffy that Willow was working on a spell to restore his soul, then by encouraging vampire Slayer Faith to kill Angel after he'd come back from the dead.
** Really, all of the cast for [[Series/BuffyTheVampireSlayer both]] [[Series/{{Angel}} shows]] are this for all the others (besides Dawn, Tara, and Lorne). We've seen them all without the others (Wishverse Buffy, Dark Willow, Ripper, Angel after firing everyone, Wesley after his betrayal) and they're all much, much worse without the others. So it's like ConservationOfNinjitsu, only with evil.
** In a subversion, in "[[Recap/AngelS04E05Supersymmetry Supersymmetry]]", when Fred plans to murder (or at least trap inter-dimensionally, which is probably a death sentence) her old college professor, who did the same to her and at least four other people, her boyfriend Gunn kills him for her, in an attempt to fulfill this trope. Fred does not take this well at all.
* ''Series/BurnNotice'':
** Michael is hardly a boy scout himself, but it's implied in several episodes that hanging out with a HandsomeLech FBI informant and AxCrazy arms dealer and former IRA terrorist are not exactly helping his standing with the intelligence community.
** Conversely, Sam and Fi are portrayed as good influences compared to some of the people Michael has had to (metaphorically) get into bed with in the course of investigating the people who burned him. A particularly strong example is Larry, Michael's former mentor-turned-PsychoForHire ProfessionalKiller, who's always showing up trying to convince Michael to join him. Larry thinks that Michael's true potential is [[TheyWereHoldingYouBack being stifled]] by his association with his present comrades.
* On ''Series/{{Charmed|1998}}'', Cole kills a [[CorruptCorporateExecutive corrupt landlord]] who is trying to blackmail Phoebe. This is a turning point in one of his [[HeelFaceRevolvingDoor several backslidings into evil]].
* The ''Series/CriminalMinds'' episode "The Performer" [[spoiler:has the unsub turn out to be Dante/Davies's manager using an obsessed, schizophrenic fangirl to murder other fans to get publicity for his new album. Davies is quite horrified at this]].
* '''Series/{{CSI}}'': In the episode "Shooting Stars", a con man who manufactured a fake cult [[RippedFromTheHeadlines clearly based on Heaven's Gate]][[note]]his swindle being that he establishes said cult in a location, makes his followers give him all of their money, perform a fake mass suicide with tranquilizers and by the time everybody wakes up he is long gone. Detective Brass mentions that the cops don't have an accurate figure of how many times he did it because the victims were too embarrassed to speak up[[/note]] has his attempt at doing his gig in Vegas going horribly wrong when one of the cultists [[TheOnlyBeliever truly believes his false prophecies]] and murders him when she discovers him getting ready to escape, then performs a real mass suicide.
* ''Series/DoctorWho'':
** Leela has no qualms about violently disposing of anything or anyone that threatens the Doctor, despite his many attempts to rein her in.
** Captain Jack Harkness is willing to go quite far to protect the Doctor, using methods that the Doctor would never approve of.
** River Song takes this trope [[ExaggeratedTrope to extremes]], willing to [[spoiler:let time itself be destroyed]] just to keep the Doctor alive. It frustrates him terribly.
*** On the other hand, he does admit that her methods are useful at times:
---->'''The Doctor:''' Oh, and this is my friend River. Nice hair, clever, has her own gun. Oh, and unlike me, she ''really'' doesn't mind shooting people. I shouldn't like that. Kinda do, a bit.\\
'''River:''' Thank you, Sweetie.
*** Neatly summarized when River faces a Dalek:
----> '''Dalek: Records indicate you will show mercy. You are an associate of the Doctor.'''\\
'''River:''' I'm River Song. Check your records again.\\
'''Dalek: Mercy!'''
*** She gets it from her mother:
---->'''[[spoiler:Amy]]:''' River Song didn't get it all from [[EvilMatriarch you]], "sweetie".\\
'''Madame Kovarian:''' [death wail]
** Missy. She's "I'b helpig" homicidally insane.
--->'''Missy:'''''[after chaining Clara to a wall of undead Daleks as bait, poking holes in a Dalek, then letting the undead Daleks swarm the unfortunate Dalek]'' Wheee!
* ''Series/{{The Flash|2014}}'' has Harrison Wells, Barry's mentor who is helping him learn how to control his powers. He's willing to go to great lengths to keep Barry safe, including [[spoiler:killing Simon Stagg and leaving General Eiling to the mercies of Grodd,]] because both of them had their own designs on the Flash.
* Bebe on ''Series/{{Frasier}}'' was a classic example of this: the completely unscrupulous agent. Frasier was frequently warned that agreeing to anything she suggested, however favourable and seemingly innocent, was tantamount to [[DealWithTheDevil dealing with Satan]].
-->'''Frasier''': What kind of a woman are you? You seduced me, you lied to me, you nearly got me killed. You've shamelessly manipulated not only me but the station, the news media, and the entire city of Seattle. What do you have to say for yourself?\\
'''Bebe''': Aren't you glad I'm on your side?
* ''Series/{{Ghostwriter}}'': Calvin Ferguson is this to Jeffrey Baxter. More than once, Calvin ropes Jeffrey into his schemes to cause trouble for the Ghostwriter Team. However, "What's Up With Alex?" implies that Calvin is also the CloudcuckoolandersMinder. When we finally see Jeffrey without Calvin around to tell him what to do, he causes problems for Jamal in other ways.
* ''Series/TheGoodWife'' includes Fred Weller guest-starring as a {{jerkass}} AmoralAttorney. It's implied he acts this way in part because he believes his boss deserves someone watching his back and willing to get their hands dirty. Good thing, too, because it was the only thing giving his character depth. [[spoiler:Too bad his boss doesn't deserve it...]]
* Lily from ''Series/HowIMetYourMother'' is revealed to be this, breaking up Ted's girlfriends if she thinks that it will be better for Ted (and, by extension, herself).
* On ''Series/{{Luther}}'', the eponymous Scotland Yard detective has Alice Morgan, a former ChildProdigy who brutally murdered her parents and got away with it, and has now developed a crush on the copper who investigated the case. Luther really doesn't appreciate her attempts to help him get back together with his estranged wife, which seems to involve a lot of breaking and entering and assault.
* ''Series/TheOfficeUS'': [[PsychoForHire Dwight]] to[[ManChild Michael]].
* Izzy hands to Blackbeard in ''Series/OurFlagMeansDeath''.
* ''Series/PrettyLittleLiars'': Alison is a deconstruction, as her behavior actually drives the Liars away from her. CharacterDevelopment makes her less of one as the series goes on, though.
* ''Series/{{Revenge}}'' has Nolan, who's actually an inversion of sorts: while he assists Emily Thorne in her titular revenge gladly and is significantly more cynical than she is, he also frequently points out she could easily just go off to enjoy her life and leave the people who wronged her behind.
* ''Series/{{Scandal}}'': Pretty much the entire main cast are this to each other. Olivia and Cyrus will do horrible things to protect President Fitzgerald Grant and in turn Grant will do horrible things to protect Olivia. Melly Grant will do anything to protect her husband, even though she knows that he loves Olivia because she made it her life's mission to get Fitz elected president. Olivia's Gladiators do increasingly nastier and nastier things to protect Olivia and each other. B6-13 is an entire secret government agency that is the poisonous friend for the United States, torturing and assassinating people, and even committing acts of terrorism in order to secure the well-being of the country.
* Subverted on an episode of ''Series/{{Shark}}'', when [[spoiler: SerialKiller Wayne Callison's love-smitten publisher turned out to actually be [[TheMole a spy]] planted by Stark]].
* A Season 5 episode of ''Series/{{Smallville}}'', titled "[[Recap/SmallvilleS05E10Fanatic Fanatic]]", features one of Lex Luthor's political campaign supporters going berserk and trying to kill his opponent [[spoiler:Jonathan Kent]].
* In ''Franchise/StarTrek'', "Section 31" performs questionable actions in (preemptive) defense of the Federation. Played with a bit, as when they first surfaced in ''[[Series/StarTrekDeepSpaceNine Deep Space Nine]]'' the Federation was actively trying to shut them down; ''Enterprise'' sort-of retconned them into originally being the black-ops wing of Starfleet Intelligence, and apparently losing their budget and official status at some point seems not to have slowed them down much.
** Garak proudly admits to being this trope in "[[Recap/StarTrekDeepSpaceNineS06E19InThePaleMoonlight In the Pale Moonlight]]":
--->'''Garak:''' That's why you came to me, isn't it, Captain? Because you knew I could do those things that you weren't capable of doing? Well, it worked.
** [[spoiler:Tuvok]] cites this trope as his reason for secretly betraying Captain Janeway in an early episode of ''Series/StarTrekVoyager'', saying that his role requires making the morally dubious choices she can't make in order to get the crew home. She doesn't take it well.
** Section 31's official status is also listed in the non-canon ''Section 31'' novels, where Kirk carefully reads the Starfleet Charter and locates Article 14, Section 31, which is a short clause allowing for the creation of an unspecified agency with unspecified powers to safeguard humanity.
* ''Series/TrueBlood'': Roy, the little toad who cheers Marnie's wholesale destruction and mayhem. She has her tortured backstory as the reason he does this; he just seems to think it's fun.
* [[FullyEmbracedFiend Damon]] of ''Series/TheVampireDiaries'' can sometimes fall into this role, particularly in regards to protecting Elena. He's outright stated that he will do whatever he has to do in order to keep her safe, even if she hates him for it.
* ''Series/WhyWomenKill'': Rita plans to mentor Alma in all her manipulative ways. [[spoiler: Subverted. She did not mentor her though their feud will definitely be continued]].
* ''Series/TheWire'': Jimmy [=McNulty=] is a deconstruction of the CowboyCop who always does what he thinks is right no matter the politics or his orders. This turns his career into a train wreck, but his allies usualy get taken down with him, leaving a trail of bitter former comrades in his wake. He's also extremely self-destructive in his personal life, so he even makes his own loved ones' lives worse. All of this is unintentional, however, and he really is trying to do the right thing.
-->'''Michael Crutchfield''': Did [[=McNulty=]] fuck you?\\
'''Bunk Moreland''': He tried. But mostly he just fucks himself.
[[/folder]]

[[folder:Professional Wrestling]]
* [[Wrestling/StevieRichards Steven Richards]] was like this to Wrestling/{{Raven}} and [[Wrestling/LisaMarieVaron Victoria]], even as the latter got BoredWithInsanity.
* The Basham Brothers to Shaniqua, who was the "center of their universe". She treated them well, all things considered, or at least as well as you could expect, [[{{Dominatrix}} given her profession]].
* Jon Heidenreich was like this to Wrestling/BookerT who "showed him the light" in the form of a steel folding chair to his skull. Jon then moved on to [[Wrestling/TheRoadWarriors Road Warrior Animal]].
* Wrestling/MickieJames, until she realized her obsession with Wrestling/TrishStratus was unhealthy and mellowed out.
* Wrestling/RosaMendes, who debuted on ''Raw'' assaulting Wrestling/{{Melina}} for "stealing" Wrestling/BethPhoenix's championship (as in winning in a wrestling match). Beth's boyfriend Wrestling/{{Santino|Marella}} had advice on [[TeamPet how they could make the relationship work for them]] but Beth just took her support for granted.
* [[Wrestling/NickDinsmore Eugene]] to Wrestling/TripleH. Unlike most examples, Eugene wasn't violent, overly obsessive or a danger to Triple H's reputation. No, he was just [[UnwittingPawn blind]] to the fact Triple H was no good for him, or anyone else.
* If it's a [[Wrestling/RingOfHonor Women Of Honor]] segment or [[GirlsNightOutEpisode show]] and you see BJ Whitmer appear, then chances are you're about to hear about Wrestling/KellyKlein, ''[[CharacterFilibuster a lot]]'' about Kelly Klein. Up until their Fight Without Honor at ''Best In The World'' she was the one thing that could take his mind off of destroying Steve Corino. Klein for her part seems to appreciate it on some level, because she will attack those who try to shut Whitmer up.
[[/folder]]

[[folder:Theatre]]
* Mrs. Lovett, the female lead of ''Theatre/SweeneyToddTheDemonBarberOfFleetStreet''. Spurred on by obsessive (unrequited) love for the title character, she shelters him despite his tendency towards psychopathic murder and comes up with the plan of disposing of the corpses he produces by baking them into meat pies and selling them for, to her great satisfaction, a tidy profit.
[[/folder]]

[[folder:Video Games]]
* Depending on how moral you want to play it, Steven Heck is this to Mike in ''VideoGame/AlphaProtocol'', murdering and framing innocents to help his buddy.
* The ''VideoGame/BatmanTheTelltaleSeries'' has "[[ComicBook/TheJoker John Doe]]", who manages to be this to Bruce. He's a violent and unsettlingly creepy lunatic who derives cruel pleasure from fighting, mayhem, and destruction, but at the same time, he's a truly loyal friend to Bruce who genuinely cares about him, even ''saving his life'' at a couple of key points in both Seasons. He manages to be simultaneously [[AdaptationalNiceGuy an innocent victim of mental illness]] as well as ''scary as hell''.
* [[DoubleSubversion Doubly-subverted]] and {{deconstructed|Trope}} in ''VideoGame/{{Brink}}''. [[LaResistance The Resistance]] has some [[WellIntentionedExtremist rather extreme followers]] who are willing to do ''anything'' if they think it will help Brother Chen and the Resistance. At one point, one of them says that they will do the dirty work while Brother Chen, the much more reasonable leader of the Resistance, will be able to keep his hands clean. The {{subver|tedTrope}}sion comes when Chen mostly tolerates such soldiers since he sees them as necessary for the war effort and for his political promotion. It's {{deconstructed|Trope}} through Moekena, who looks at Chen and the radical followers and sees a vile leader who uses others so that he doesn't get his hands dirty instead of seeing a conflicted leader who has to deal with dangerously extreme but necessary followers since Moekena does not know of Chen's point of view. It's doubly subverted when [[spoiler:Chen yells at the radical followers in rage once they attempt to cover [[DownerEnding (or succeed]] [[TheBadGuyWins in covering)]] the Ark in nuclear fallout for him in a [[MultipleEndings What-If mission]], calling the radicals idiots and rebuking them for not realizing that he was bluffing]].
* In ''VideoGame/ExoptableMoney'', you can purchase a cat for you to send out, which will come back every once in a while with large amounts of money in tow. [[spoiler:After a few goes of this, you send your cat out and it starts taking longer than usual. A ''lot'' longer.]] [[spoiler:You get a letter from Madame Sinclair, about a cat she saw recently, and she mentions that cats have [[MonsterOrganTrafficking other uses]] beyond finding money.]] [[spoiler:She then sends you [[JumpScare a letter]] with [[NightmareFace your cat's gory head]] in it, telling you about the [[SarcasmMode wonders]] of selling cat fur. "You're welcome" indeed.]]
* ''VisualNovel/Danganronpa2GoodbyeDespair'':
** [[spoiler:Nagito Komaeda]] idolizes the Ultimate students that are trapped on the island, and is willing to do anything to help them excel, even if it means sacrificing himself in the process. [[spoiler:Unfortunately, this also means setting up the first murder of the game, and then roping Hanamura into it [[UnwittingPawn without him realizing]]. With team leader Togami dead, he hoped to drive the rest to despair, only for them to regain their hope and overcome it in the end.]]
** One of the big twists of the game is that [[spoiler:all the characters (minus one) used to be minions of [[BigBad Junko Enoshima]]. They were all brainwashed into blindly following her ideals of spreading despair in the world and used their abilities to cause TheEndOfTheWorldAsWeKnowIt. They continued carrying out Junko's will even after she died, which is why they had their memories wiped for rehabilitation]].
* ''Franchise/{{Disgaea}}'':
** ''VideoGame/Disgaea3AbsenceOfJustice'':
*** Princess Sapphire has some interesting ideas on how she should help Almaz once she learns of his predicament. Most of them involve [[MurderIsTheBestSolution killing someone]], as [[AxCrazy almost all of her ideas do]]. That said [[spoiler: she and Almaz end up married at the end of the game]], so she does grow out of it, at least where he's concerned. Given the fact that [[spoiler: his temporary death]] is the first thing in a LONG time that causes her to cry, it's shown how much she does actually care. She wasn't even able to cry at her mother's funeral.
*** Mao's butler Geoffrey is a Poisonous Underling, manipulating events behind the scenes to [[spoiler:make Mao the perfect EvilOverlord so that he, in his true identity as the Superhero Aurum, can have a WorthyOpponent to battle]].
** In ''VideoGame/Disgaea4APromiseUnforgotten'', Fenrich vowed to make the vampire tyrant Valvatorez the greatest in all the Netherworld. The only problem? Somewhere along the line, Val [[FriendlyNeighborhoodVampire seems to have developed some sort of pesky conscience]], [[VegetarianVampire has sworn off human blood]] (which has massively {{De Power}}ed him), and has insisted on following a new code of evil [[NobleDemon which is not very evil at all]]. Fenrich has no intention of giving up his original vow, so...
* ''Franchise/DragonAge'':
** ''VideoGame/DragonAgeOrigins'':
*** Morrigan kind of fits this, since she approves of the Warden's more ruthless actions and dislikes his/her more compassionate ones. However, if the Warden makes an effort to befriend her, she is steadfastly loyal, even deeming a female Warden to be an honorary sister of sorts.
*** A better example appears on the antagonists' side: Arl Howe to Teryn Loghain. Arl Howe does seem genuinely loyal to Loghain and his political and military support is a great boon to him as well. However, Loghain supporting him and making him Arl of Denerim will help to screw him over in the Landsmeet if you bring up some of Howe's actions [[spoiler:like kidnapping and torturing the son of another noble.]]
*** It's possible for the Warden to play this role to Leliana at the end of her quest, where she is unnerved by a comment about [[NotSoDifferentRemark she and her ruthless former mentor being the same]]. Faced with a crisis of conscience, she asks the Warden for their opinion. At this point, it is possible to either assure her that she's a good person or tell her that she's denying her true self. Choosing the latter will cause Leliana to become more individualistic and open to supporting selfish or morally questionable actions (as well as becoming more openly promiscuous and non-monogamous.)
** ''VideoGame/DragonAgeInquisition'' turns [[TheHeart Leliana]] into one, blood loyal to her allies, but utterly ruthless. Indeed, she spies on her best friend [[ActualPacifist Josephine]] trying to resolve her family problems, before proposing going behind her back and resorting to infiltration and assassination, knowing full well it will get a WhatTheHellHero reaction but happy to shoulder that burden if allowed.
* Introduced in ''VideoGame/DynastyWarriors 8'', Jia Chong is this to the easygoing Sima Zhao. It's made quite explicit -- while Sima Zhao looks (and acts) like a Californian surfer transposed into ancient China, Jia Chong is [[EeriePaleSkinnedBrunette pale as death with hair as black as night]]. Several soldiers refer to the two as being 'like light and shadow'. Jia Chong repeatedly takes action to benefit Sima Zhao, usually without bothering to check with him first and is particularly swift to kill off enemies that Sima Zhao seems inclined to offer mercy to. Culminating in...
-->'''Sima Zhao:''' ''[standing with his sword raised over the Wei Emperor]'' This is what you want from me, right?!\\
'''Jia Chong:''' Yes... but the dirty work is my job. ''[cuts down the Emperor himself]''
* ''VideoGame/DyztopiaPostHumanRPG'': Robun is fanatical about serving the Church of the Vessel [[spoiler:and is willing to sacrifice his teammates and even himself just to slow down the party]]. It's noted that he only joined after Akari took over and spread anti-poor and pro-Zetacorp views.
* Rider to [[spoiler:Sakura]] in the Heaven's Feel route of ''VisualNovel/FateStayNight''. She's willing to let the world be destroyed or kill [[spoiler:Shirou and Tohsaka, her sister]], just to prolong her life an extra couple days if she has to, whether Sakura wants her to or not. Eventually, she realizes that [[spoiler:Sakura]] just being ''alive'' isn't sufficient, and ends up fighting against her. She's still acting almost exclusively for Sakura's benefit, though.
* Hubert in ''VideoGame/FireEmblemThreeHouses'', plays advisor to future emperor Edelgard. He considers it his role to do whatever is necessary to ensure her success, arranging bribes and assassinations behind her back. His eagerness to make himself the [[BadGuysDoTheDirtyWork bad guy doing the dirty work]] for her dismays Edelgard, who has already resolved to stain her hands with blood to bring about her vision of a better world.
* In the first ''VideoGame/GodOfWarI'', Ares honestly seems to think he did Kratos a ''favor'' when he tricked him into murdering his own family. During their final battle, Ares throws a fit and claims that Kratos had no right to turn against Ares after everything Ares did to make him stronger. In the end, when Kratos has Ares at his mercy, Ares makes one last plea for his life by telling Kratos that he just wanted to make Kratos a great warrior. [[GoneHorriblyRight Unfortunately for Ares, he succeeded]].
* In ''VideoGame/{{Hakuouki}}'', Hijikata Toshizo intentionally takes on the role of harsh disciplinarian and "Demon Vice-Commander" to keep order within the Shinsengumi and further Commander Kondou Isami's goals against the heavy opposition of the era's very classist society, allowing Kondou to remain as nice and brotherly and idealistic as he wants to be. It's a mild example since Kondou is aware of everything Hijikata is doing, but there are points at which Hijikata is specifically noted as "playing the villain" for Kondou's sake. [[spoiler:In the end, it kind of backfires on both of them, as Hijikata's efforts protect Kondou from many of the harsher realities of leadership and leave him unprepared to deal with the situations the Shinsengumi face after the Boshin War begins.]]
* ''VisualNovel/HatofulBoyfriend'' has two notable examples, both revealed in the much darker "Bad Boys' Love" route. [[spoiler:Namely, Hitori Uzune's efforts to avenge (and later, [[{{Yandere}} keep the remains of]]) his brother Nageki Fujishiro, and [[WouldHurtAChild the extremes to which]] Yuuya Sakazaki went to protect his brother Sakuya Shirogane Le Bel.]]
* Axel to Roxas and Xion in ''Franchise/KingdomHearts''. He seems like a pretty cool guy, and he genuinely cares about his friends, but a single playthrough of ''[[VideoGame/KingdomHeartsChainOfMemories Chain of Memories]]'' is more than enough to see how wickedly treacherous he can be. This becomes even more apparent towards the end of ''[[VideoGame/KingdomHearts358DaysOver2 358/2 Days]]''. He grows so attached to Roxas and Xion that he becomes obsessed with maintaining their friendship and keeping them safe -- however, to achieve this, he lies to them, does questionable stuff behind their backs, and if they try to leave the Organization of their own free will, he attempts to bring them back by force. Things come to a terrible head when Roxas finally gets fed up with this and [[spoiler: deserts the organization]], and Xion ends up initiating a [[spoiler:SuicideByCop that results in her being wiped from existence]]. Axel does redeem himself in the end, but [[spoiler:RedemptionEqualsDeath]] -- although, since he's [[spoiler:now BackFromTheDead in the form of his original self]], it's possible that he can finally make his actions speak for it.
* ''Franchise/MassEffect'': Cerberus as a whole is humanity's poisonous friend initially. Much like Section 31 described above, they too started as a black ops unit then went their own way. Some of the questionable things they are involved in -- cloning rachni to act as shock troops, attempting to repurpose Thorian creepers as shock troops, even attempting to repurpose [[NotUsingTheZWord husks]] as shock troops, siccing thresher maws on troops to study them, injecting a human soldier with thresher maw acid to see if it will turn him into a super-soldier, kidnapping humans and aliens for horrific biotic experiments, plugging in autistic savants to an AI neural network to try to control it, and finally running an extermination camp to study Huskification with the ultimate goal of subjugating and enslaving the [[BigBad Reapers]]. All of these things were done to protect or advance humanity.
* ''VideoGame/ShadowHearts1'' gives us Arcane Olga, a sadistic ghost of a witch who cackles as she drains the life out of innocent civilians. She is later recruited by the BigBad, a WellIntentionedExtremist. She works for him because she admires him and will reign in her sadism based on his orders; however, if he doesn't specifically order her otherwise, she goes right back to hurting people for the fun of it.
* A downplayed and rather strange example in ''VideoGame/StarCraft2''. At the conclusion of the Covert Ops mini-campaign, Nova comes to the conclusion that Valerian Mengsk is a great man and a worthy ruler, but also entirely too soft. Not only does she disobey a direct order to bring in a mutinous general alive, but she also makes it perfectly clear that she intends to go rogue and begin assassinating anyone she deems a threat to Valerian's rule.... despite Valerian explicitly ordering her ''not'' to do that.
* ''VideoGame/TalesSeries'':
** [[spoiler:[[WellIntentionedExtremist Mithos]] is a poisonous ''brother'' of Martel]] in ''VideoGame/TalesOfSymphonia'', whose [[spoiler:misinterpretation of Martel's wish for a discrimination-free world leads to him attempting to execute an AssimilationPlot.]]
** Sodia from ''VideoGame/TalesOfVesperia''. [[spoiler:She tries to [[MurderTheHypotenuse murder Yuri]], whom ''she'' perceives as Flynn's poisonous friend.]] Yuri also considers himself this to Flynn, citing it as the one thing he agrees with Sodia on. Flynn has none of it.
* ''VideoGame/WorldOfWarcraft'':
** Makuru is one to Obadei, insisting on taking vengeance against the orcs after learning that they killed Obadei's brother.
** In ''Mists of Pandaria'', Wrathion is shaping up to be this. He believes the Burning Legion will eventually invade Azeroth, so the Alliance/Horde war must end so that Azeroth can put up a unified front against the threat. However, being a black dragon, Wrathion's idea of world peace involves one of the two factions conquering the other. Pretty much everyone else who meets him agrees that Wrathion should not be trusted.
[[/folder]]

[[folder:Web Animation]]
* ''WebAnimation/{{RWBY}}'': Salem's minions range from the WellIntentionedExtremist Hazel to the ForScience Watts, along with a few people [[TrappedInVillainy who are clearly in way over their heads]]. Tyrian, on the other hand, is so psycho that he makes ''everyone'' else look perfectly sane and rational. He worships Salem as a goddess (despite Salem doing nothing to encourage this belief), sings her praises at every opportunity, and happily tells the people he is murdering about how their deaths are for Salem's glory. When he does fail her, all she has to do is say "I'm disappointed in you" to drive him to despair.
[[/folder]]

[[folder:Webcomics]]
* Used interestingly in ''Webcomic/CobwebAndStripes'', when Betelgeuse ''offers'' to be exactly this for Lydia. He volunteers to handle anyone at her request, so she needn't get her "sweet little hands" dirty. She's not entirely comfortable with the offer, although at the same time she sort of appreciates it.
%%* Anakin becomes this for Palpatine in ''Webcomic/DarthsAndDroids''.
* ''Webcomic/FireflyCross'' has a fairly low-key (so far) example; [[LoveableRogue Katyn]]'s friend [[spoiler:Micah]] is actually Dark, and willing to kill in order to protect her. [[spoiler:Which he's already done, when a WellIntentionedExtremist stole her [[MacGuffin sword]].]]
* ''WebComic/KillSixBillionDemons'': {{Subverted}} with the Priests of the Count who serve Mammon, the Grand Dragon. They're described as being absolute nutters, and they look pretty freaky, especially when they fight. However, it's revealed that their ''reasons'' for serving Mammon, at least for some of them, are not so crazy. The former EvilOverlord has become sympathetically senile, and his vault is a refuge containing a peaceful society enclosed from the CrapsackWorld outside. It's understandable to want to defend that.
* ''Webcomic/LookingForGroup'':
** Richard. Cale has conceded that Richard is both a blight upon the world and the best chance they have at saving it IF he gets enough material to troll Cale with when the party isn't looking. And by material, we mean knights, peasants, orphans, endangered animals, funny dogmatic armies, doggy funmatic MixAndMatchCritter, etc.
** Pella commits a crime to further the main character's cause.
* In ''Webcomic/MenInHats'', Aram attacks Sam with a steamroller in the name of putting Gamal's plans into action, and Gamal is pretty sure [[http://www.meninhats.com/d/20030908.html steamrolling people wasn't his idea]]. (Aram has also been known to [[http://www.meninhats.com/d/20020830.html poison]] [[http://www.meninhats.com/d/20040331.html his]] [[http://www.meninhats.com/d/20040319.html friends]], [[http://www.meninhats.com/d/20020823.html sometimes]] with [[ScaryScorpions scorpions]].)
* In ''Webcomic/TheOrderOfTheStick'', Tarquin does seem to genuinely love Elan, but he expresses it in truly awful ways. He welcomes Elan by [[spoiler:arranging captured slaves to spell Elan's name and then burning them alive]]. He wants Elan to be happy with Haley...so he [[spoiler:frames Haley's father for murder as a "test" to see whether she deserves Elan]]. He wants Elan to grow into the role of TheHero instead of remaining a supporting character...[[spoiler:so he orders his army to kill the actual Hero Roy]]. On the other hand, being Tarquin's enemy is even worse [[spoiler:which Nale found out the hard way]].
* ''Webcomic/SleeplessDomain'': Cassidy is this to Heartful Punch. Her entire motivation for [[spoiler:aggressively confronting Undine with the implied accusation of being complicit in the Team Alchemical tragedy]] seems to be centered around protecting HP, without consideration of what the latter might know or want. HP even says as much when she finds out what happened, telling Cassidy to just leave Undine and her alone.
* ''Webcomic/SomethingPositive'': Hurt Davan in any way and [=PeeJee=] and Aubrey will respond with [[DisproportionateRetribution tenfold the pain you caused him]]. Davan is not always bothered by this.
* Jordan in ''WebComic/TowerOfGod'' to Baylord Yama, at least in Yama's own opinion at one point. Jordan expresses enthusiastic support to Yama even after hearing his dark secret, which Yama expected might turn him against him. Possibly due to his over-exuberant admiration, this prompts Yama to think to himself, "What a lunatic." So: Jordan says why he supports Yama, and Yama reacts to this by thinking he's a lunatic, so he thinks Jordan supports him because Jordan is nuts.
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[[folder:Web Original]]
* In ''Literature/{{Twig}}'', the narrator, Sylvester, becomes steadily aware that he is essentially this towards the more moral Lillian, and he worries even when they enter a romantic relationship that he isn't actually able to love her and build her up instead of tearing her down. His amorality and inbuilt ManipulativeBastard tendencies also make him worried that he'll become a poisonous influence on her future as an [[AcademyOfEvil Academy professor]].
* In ''Literature/{{Worm}}'', TokenEvilTeammate Regent, realizing that SociopathicHero Shadow Stalker isn't going to leave the [[VillainProtagonist Undersiders]] alone and will in fact keep coming after them with lethal force until she gets lucky, takes it upon himself to use his PeoplePuppets power to utterly destroy her life and drive her out of town, refraining from killing her only because it would be more troublesome and draw more attention from the authorities.
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[[folder:Web Videos]]
* In ''WebVideo/TheVeronicaExclusive'', Veronica's girlfriend Jane would do ''anything'' to make her happy, up to and including murder.
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[[folder:Western Animation]]
* ''WesternAnimation/{{Amphibia}}'': Sasha Waybright is both this and ToxicFriendInfluence: Sasha combines her controlling attitude toward Anne with a ruthless protectiveness. She used her school status to defend Anne from bullying and believes Anne would be better off if she joined Toad Tower.
* ''WesternAnimation/AvatarTheLastAirbender'': [[Characters/AvatarTheLastAirbenderPrincessAzula Princess Azula's]] devotion to Fire Lord Ozai. Though it's kind of unclear with her whether she follows the world-conquest thing so intently because she's insane, or because she was raised to conquer the world, or because of bad genetics Zuko managed to avoid, or...anyway, she follows Ozai as much because [[DaddysLittleVillain he's her father]] and she wants to please him as because she's a megalomaniac. A little more megalomania and she could have offed him at a some point.
* ''WesternAnimation/BatmanTheAnimatedSeries''
** [[Characters/DCAUHarleyQuinn Harley Quinn]] is an interesting take in the trope, because without someone to lead her, Harley doesn’t have the motivation to commit crimes. Unfortunately, [[MadLove her love for]] ComicBook/TheJoker [[MadLove keeps dragging her back to his side]].
*** The Joker abuses her with glee, until his death. After that, is implied she chose a tranquil life.
*** ComicBook/PoisonIvy also abuses Harley and doesn’t want to give her enough credit for her part at their heists.
* Inferno, the pyromaniac fire ant from ''WesternAnimation/BeastWars'', is kind of an interesting case. Due to his beast mode instincts being so overpowering he firmly believes that he is an ant and that Megatron is Queen of the colony. This means Inferno is literally incapable of disobeying orders from his Queen, a trait that makes him one of Megatron's most valuable troops.
* WesternAnimation/{{Beetlejuice}} drags Lydia into all sorts of scams, schemes, and misadventures; however, he is profoundly loyal to her, and will utterly destroy anyone else who creates difficulties for her. (Or he would if she'd let him. She stops him if he goes too far.)
* ''WesternAnimation/CountDuckula'': Igor is a CardCarryingVillain who was loyal to all of Duckula's predecessors and thus to the current one, though not without expressing his displeasure and disappointment with his master's friendliness and harmlessness. That is why he tries, without betraying him, to turn him more to his liking like the forebearers.
* [[Characters/RickAndMortyRickSanchez Rick Sanchez]] from ''WesternAnimation/RickAndMorty'', despite all the abuse, treating his family as a means to an end, and all his ''many '''many''''' flaws, will look out for his friends and family when the chips are down and isn't even sure why he bothers. Of course, since it's ''Rick'', he'll do it in some pretty ruthless, messed up, and heartless ways. Best example is when he passively protects Jerry of all people from a jealous alien out to kill him:
-->'''Message One:''' This is Garmos! I have intercepted sexual communications between you and my new girlfriend Keara! I am coming to kill you NOW!!!\\
'''Message Two:''' Yo Jerry it's the Big R. I killed that alien that was coming after ya. Looking out for you, buddy.\\
'''Message Three:''' Yo Jerry it's Rick. Don't be mad I fucked your ex-girlfriend Keara.
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