Villains can become popular enough that the fandom becomes sympathetic to them. However, meshing them into the main cast can be [[BadassDecay dangerous and disappointing]] if GoodIsDumb. This can also be unrealistic since even those downgraded to protagonists tend to be unsure of anyone trying to help them. Some heroes wouldn't exactly be quick to accept them, either.

One way to handle this is to present another character to [[FriendlessBackground befriend them.]] Ideally, this should be someone who could pose no threat or even be demanding, and depending on how the plot goes, the recovering villain becomes fond of this other character and may [[LivingEmotionalCrutch draw stability from their presence]]. The Morality Pet may even be somewhat pathetic (and will be told so), but has often gone through some anguish to which the recovering villain can relate secretly, or reminds the villain of someone he lost long ago. They're usually upbeat, though they might go a little [[TastesLikeDiabetes overboard sometimes.]] If handled poorly, they might become a SatelliteCharacter for the former villain.

This also makes for a convenient excuse to help the heroes if needed; an ex-villain can simply claim to have his own '[[IWasJustPassingThrough selfish reasons]]' and save face. Anyone messing with the Morality Pet can expect a full-on MamaBear or PapaWolf response from the ex-villain or antihero in question.

They are a living and recurring incarnation of PetTheDog, i.e., something to placate the audience regarding the hero's tolerance of the amoral character, while focusing on the true villains. (Unless they KickTheMoralityPet, that is, which leads their character arc in a different direction.)

This isn't just for villains, either. Despite sidekicks being less popular in comic books than they were originally, some writers pair them with {{Anti Hero}}es in an effort to humanize them.

Not to be confused with a magic-user's {{familiar}}, the creature type of which often reveals the kind of person who owns it, though if the magic-user is fond of the familiar and treats it well, it could very well be a Morality Pet.

If the Morality Pet dies or disappears and this causes the villain/anti-hero to revert back to his or her old ways, the Morality Pet was acting more like a MoralityChain.

Parent trope of LittleBrotherIsWatching.

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!!Examples:

[[foldercontrol]]

[[folder:{{Anime}} and {{Manga}}]]
* In ''Manga/GetBackers'' Makubex first appears as a BigBad and manages to keep his cool down most of the time. When Sakura Kakei, a woman close to him, almost dies in combat Makubex hates himself for what happened.
* ''ReimeiNoArcana'': Nakaba is one for both Loki and Caesar. Vernas' younger sister Lemilia is one for Vernas.
* ''Manga/NabariNoOu'': If it weren't for Gau, Raikou would basically be a villain.
* ''Manga/{{Bleach}}'':
** Yachiru Kusajishi is the adorable child vice captain of Kenpachi Zaraki, one of the [[BloodKnight most violent]] and physically monstrous of the 13 captains that rule Soul Society. Kenpachi may be a savage now, but before he took in Yachiru he was little more than an animal with a sword. ''All'' he did was kill. Yachiru enthusiastically encourages "Ken-chan" to go wild when he gets a chance to fight. And is STILL a positive influence on him.
** Rangiku towards Gin. Especially evident when it's revealed [[spoiler:the only reason why he joined Aizen was to get revenge because Aizen's underlings and he injured Rangiku in the past.]]
** Lilinette seems to serve as this for Stark. When [[spoiler:Aaroniero]] was killed, Stark ''went right on sleeping'' until Lilinette woke him up and asked him what he was going to do about it.
* In ''Manga/InuYasha'', Rin's humanizing (so to speak) effect on Sesshoumaru. Her introduction was the start of his shift from ''Villain'' to ''NominalHero'' and finally to full on ''AloofAlly''.
** Kohaku became like this for Kagura. Especially notable because later, she ends up [[spoiler:dying for him.]]
* One of ''Manga/RozenMaiden'''s Mediums, the IllGirl Megu Kakizaki, is paired up with the villainess from the first season, Suigintou. Megu's [[HeroicSelfDeprecation own self hatred]] forces Suigintou [[CharacterDevelopment to recognize her own, and to value another person]].
* Mokuba Kaiba from ''Anime/YuGiOh'' sometimes takes this role, making Seto Kaiba somewhat approachable. This, however, is averted in the manga, where, in the arc where Seto is actually a villain, not only does Mokuba epically fail to rein in his brother's sadistic tendencies, he is actually a willing accomplice to Seto's EvilPlan. After Seto's [[MindRape Mind Crush]], Mokuba plays this straight.
** Most ''Yu-Gi-Oh'' villains have something like this. Pegasus had his dead wife Cynthia/Cecilia, but she is more of a CynicismCatalyst. Marik had his sister Isis and his adoptive older brother Rishid/Odion, Dartz as well. Bakura has 99 metaphorical {{Cynicism Catalyst}}s, which prompted him to go on such a wild RoaringRampageOfRevenge that he made a DealWithTheDevil.
** Yami himself has Yugi and his TrueCompanions. When he briefly becomes the sole occupant of Yugi's body during a filler arc, he starts [[MoralityChain acting more ruthless]].
* Haku from ''Manga/{{Naruto}}'' for Zabuza.
** Kimimaro for Juugo.
** And Yukimaru is this for Guren in the Three-Tails Arc.
** Izuna was his brother Madara's entire ''world''. [[spoiler:Madara is the man he is today because of Izuna's death.]]
* In ''Manga/FullmetalAlchemist'', the terrorist Scar obtains May Chang, an [[TokenMiniMoe adorable little munchkin girl]] who is an active practitioner of a form of alchemy, the very art he despises.
** [[CutenessProximity He seems to have a thing for cuteness]], judging not only from May, but also [[PandaingToTheAudience her little pet panda]], and [[CuteKitten a certain]] {{Omake}} chapter (which might or might not count).
** [[spoiler:Mrs. Bradley]] serves as a Morality Pet for both [[spoiler:Wrath and Pride]]. Fitting, considering [[spoiler:they're pretending to be her husband and son, respectively.]]
** Hawkeye is this to Mustang, whenever he gets a little bit too [[RoaringRampageOfRevenge caught up in]] [[AFatherToHisMen avenging his subordinates]].
** In the [[Anime/FullmetalAlchemist first anime]] Bradley's pet was his son, Selim. Until he appeared he gave off an ambigious air after [[spoiler:how easily he killed Marta and his reveal as being an homunculus.]] Selim showed off he had a nice side too. [[spoiler:Or really how great he is with facades. He ends up [[WouldHurtAChild killing]] his Morality Pet before he himself dies]]
* Wormmon to his partner Ken Ichijouji from ''Anime/DigimonAdventure02'', after Ken's repentance. (Unlike the standard depiction of this trople, when Ken was ''evil,'' Wormmon was basically the dog, as in "[[KickTheDog kick the]].")
** Not to mention Gatomon with a Morality Pet Wizardmon in the original.
*** And Gatomon's eventual partner replaced that wizard [[spoiler: when the poor wizard kicked the bucket]]. Kari being a Morality Pet to something normally considered a pet?
** Kari reached morality pet status before that. The assigment was to ''kill'' the kid, but when the time came, she just couldn't.
* In ''MagicalGirlLyricalNanoha'', Hayate acts as a morality pet to the Wolkenritter, especially Vita, who was rather hostile to everyone before Hayate appeared, and Signum, who was extremely serious and emotionless about her "job".
* ''Anime/CodeGeass: Lelouch of the Rebellion'' has the title character who is an arrogant ManipulativeBastard and murders members of TheEmpire rather easily. However, he dotes on his IllGirl sister, Nunnally, and [[KnightTemplarBigBrother all of his acts are to create a better world for her]]... [[AlternateCharacterInterpretation Or, at least, so he keeps telling himself]]. He's not even sure whether it would be worth living if she has to live in this quite unkind world. To a degree she's also Suzaku's once he gets far enough on the KnightTemplar side.
** Euphemia is also the Morality Pet of her older sister Cornelia; Cornelia's doting on her younger sister is her main point of humanization.
** Not only is Nunnally something of a Morality Pet for Lelouch, Kallen and his other Ashford Academy friends are as well. Without being around them, he becomes more prone to violent behaviour. And though C.C. isn't really a Morality Pet, as C.C. is pretty amoral herself, when she reverts her pre-Code self, he becomes ''even more'' violent and unstable than he was. [[spoiler: Without anyone to keep him afloat after the apparent death of Nunnally and the betrayal of the Black Knights, [[DespairEventHorizon he tries to doom himself to death by starvation just to see his father suffer - a madness from which he doesn't recover]], to which effect, after said effort fails and he instead [[DidYouJustScamCthulhu erases Charles and stops Ragnarok from happening]], he enacts a plan specifically intended to [[ZeroApprovalGambit make himself look like the world's worst tyrant]], and while [[FridgeLogic it somehow achieves the intended result of world peace despite all improbabilities]], Lelouch [[WoobieDestroyerOfWorlds ends up causing more death and destruction than he otherwise would have]], and pretty much [[ShootTheShaggyDog turns out to be all for naught when one realizes it was to fulfill Lelouch's still-unresolved death wish and that Nunnally, whose apparent death was one of the reasons behind said death wish, turns out to not only be alive, but ends up as Lelouch's final obstacle in his now unretractable plan]]]].
*** Speaking of C.C., one might say that Lelouch becomes a Morality Pet to her, in that she begins to feel human emotions once again while in his presence, even [[{{Kuudere}} against her own admission sometimes]].
* Downplayed with Ralph in ''SoukouNoStrain'' is kind to the living Emily and protects her from the rest of the Deague, but [[spoiler:when he throws a coup on the ship and kills everyone but Emily and Medlock, it's clear that even that won't save him. He's insane, and if he's allowed to live, he'll turn on Emily just like his real little sister, Sara. He does find a [[RedemptionEqualsDeath glimmer of sanity]] near the end, though.]]
* ''Manga/DragonBall'''s straight application of this trope would have to be Piccolo and Gohan. While Goku's influence means Piccolo is no longer evil, essentially adopting and training Gohan made him proactively ''heroic''. [[spoiler:He is then promptly hit with RedemptionEqualsDeath, though not permanently.]]
** Vegeta's family forms this for Vegeta later in the series. Ironically, [[GenreSavvy he is aware of this (and not pleased with it)]], and has to resort to magical brainwashing to perform a real FaceHeelTurn and [[LonersAreFreaks become more powerful]]. Luckily, his love is strong enough that the change doesn't stick. [[spoiler:He also seems to get hit with RedemptionEqualsDeath.]]
* Kazuma of ''LightNovel/KazeNoStigma'' acts distinctly uninterested in helping people or saving the day unless he can extort a profit... but he cares a great deal about his little brother, Ren, and will not hesitate to save him...and he'll still charge you for it in order to keep up his image.
* [[NonActionGuy Raki]] fills this role for [[EmotionlessGirl Clare]] in ''Manga/{{Claymore}}''. Of course this trope was even more pronounced in the flashback arc when [[TheWoobie Clare herself]] helped the legendary [[BadAss Theresa of the Faint Smile]] reconnect with her own humanity.
* Alyssa Searrs is Miyu's Morality Pet in ''Anime/{{Mai-HiME}}''. When Alyssa is introduced in episode 9, Miyu (who is the daughter/[[RobotGirl creation]] of [[spoiler:Father Joseph, a priest at the school's chapel]]) is actually seen ''crying'', genuinely moved by her young {{protectorate}}'s singing abilities.
** Of course, this is then subverted when you find out what Alyssa is [[spoiler: a 'fake [=HiME=]' created by [[NebulousEvilOrganisation Searrs]], who is a living remote control for an orbiting KillSat she is not afraid to use to hold the school hostage with. Oh, and ''she has a private army'']].
* The fact that she ''doesn't'' treat WideEyedIdealist Rock as badly as she does almost everyone else is probably one of the few humanizing features that Revy from ''Manga/BlackLagoon'' possesses. Come to that, Rock has much the same effect on a large percentage of the assorted [[PsychoForHire sadistic psychopaths]], {{magnificent bastard}}s and heroic sociopaths that make up the cast. Being actually ''mean'' to him (in a non-humorous way) is a good way to [[KickTheDog show that the character in question is scum]] -- [[EvenEvilHasStandards even by their standards]].
** Also [[PlayingWithATrope played with]] in that the CrapsackWorld and '''multiple''' cases of ShootTheShaggyDog are finally beginning to [[BreakTheCutie take their toll on Rock's psyche]], and Revy seems to be in denial about the fact that her Morality Pet might not be so moral anymore.
** Garcia Lovelace is [[RetiredBadass Roberta's]] Morality Pet. Around him she acts like a nice {{Meido}}. When he's not around her, [[ImplacableMan she tends to go crazy.]] .
*** This may have something to do with threatening Garcia being her BerserkButton as well, however.
* Casca and Puck act as this for Guts from ''Manga/{{Berserk}}'' following the events of the Eclipse that shattered Casca's mind. Guts's concern for Casca's welfare in particular, and his need to protect her from the same demons that constantly hunt him due to her having the same Brand of Sacrifice that Guts has is about the only thing that keeps him from becoming completely consumed by his hatred for Griffith and the Godhand.
** Collectively speaking, all of Guts' current TrueCompanions act as his voice of reason.
** Also, [[DarkMagicalGirl the Apostle Rosine]] had [[NaiveEverygirl Jill]], her best friend from the time she was a human girl [[BreakTheCutie and things still]] [[DespairEventHorizon had not gone]] [[FromBadToWorse pitch black for her]].
** Another Apostle, the Count, had a daughter named Theresia, the only thing that remained of the family he had before he became an Apostle. While he still was very evil, his reactions to her show that he was quite more than a mere monster. [[spoiler:When the Count lost against Guts, summoned the Godhand with his Behelit, and was told by Femto to sacrifice Theresia so he could be reborn or be condemned to Hell, he chose Hell over handing poor Theresia over.]]
** In a tragic aversion Casca and the band of the hawk were almost this for Griffith/Femto. First, [[spoiler:when Griffith is permanently crippled and right at the breaking point to use the behelit he stops and considers the peaceful life he could have with Caska and calms down, her being the one thing that could make him give up on his ambition, but then when he overhears Caska planning to run away with Gutts it pushes him right off the edge. And then after becoming Femto when he returns to the physical world, he visits the memorial for the band of hawks and sees Caska just to prove to himself that he doesn't have a morality pet.]]
* In ''SpiderRiders'', Princess Sparkle plays this role to Grasshop, [[spoiler:eventually leading him to switch sides]]. Also, to an extent, Aqune to Buguese.
* In ''Manga/MahouSenseiNegima'' (the manga, at least), Chachazero serves as a reverse morality pet to Evangeline. She's generally harmless when encountered, but being basically a [[AxCrazy serial killer]] in the body of a [[DemonicDummy puppet]], and ''designed'' as such by Eva, her comments and reminiscing about the bad old days demonstrate how much her creator's softened since. At times, Chachamaru verges on the straight version of this trope, but tends to stay in BattleButler territory.
** Fate's group of female minions serve as his Morality Pets. They serve him so loyally because they are all war orphans he rescued and took in, and they chose to aid him in his mission in return. [[spoiler:He actually took in around ''fifty'' such orphans; those that didn't want to join Cosmo Entelecheia were were given a decent education at Fate's expense.]]
* While he isn't really evil, Kaze's concern for Takeshi in ''{{Gantz}}'' definitely reveals kindness beyond his ArrogantKungFuGuy image.
** More notable is the effect Tae Kojima had on main character Kei Kurono, practically single-handedly turning him from a JerkAss to an outright [[TheHero hero]].
* Goldie Musou, arguably the worst BigBad in the entirety of ''Anime/GunsmithCats'', had a ''literal'' morality pet. In a flashback to her past, we see her grandfather give her a dog. After her parents are assassinated by a rival mob and she takes over in their stead, the dog growls at her and runs away. It smelled the chemicals on her hands from her mixing the prototype version of the drug Kerasene that she'd later use to make her criminal empire a dominant power. She even gets AnAesop from her grandfather's echoed words. "The truest test is to let something go. If it doesn't come back on its own, it wasn't yours to begin with."
* [[GentleGiant Kurita]] could be considered [[MagnificentBastard Hiruma's]] (enormous) morality pet in ''Manga/{{Eyeshield 21}}''. Sure, Hiruma inflicts his over-the-top violence on Kurita just as much as anyone else, but the choices he made because of Kurita really show the "heroic" aspect of his sociopathy. Interestingly, Hiruma's ''actual'' pet, Cerberus, is, um. Not a Morality Pet.
* In ''LightNovel/ACertainMagicalIndex'' [[spoiler:Last Order]] acts this way for [[spoiler:Accelerator]] who up to this point seemed like a mass murdering psychopath. Fairly credible job deconstructing his motives too. Though he's ''still'' a huge asshole if he doesn't like you. Then there was that one time he rescued a woman through the most violent means he could think of (slaughtering her captors to the last man).
* [[Manga/VinlandSaga Askeladd]] has a rather unusual one - the country of Wales, [[SexSlave his]] [[SonOfAWhore mother's]] homeland that he would apparently rather die than see come to harm. [[spoiler: He actually killed King Sweyn in front of his vassals to prevent him from invading.]]
* In ''[[Anime/TenchiMuyo Tenchi in Tokyo]]'', Sasami becomes this [[spoiler: for the BigBad Yugi by befriending her.]]
* ''Manga/GunslingerGirl'': Given that Guiseppe treats his [[CuteBruiser cyborg assassin]] Henrietta far better than any of the other handlers, it's easy to forget that he too is a ruthless anti-terrorist operative, seeking revenge for his dead little sister Enrica. Lampshaded in a scene where a female politician crippled by a terrorist bomb comments on how cold and frightening Guiseppe seems. Henrietta, naturally, protests that he's "the kindest man in all of Italy!" The politician wisely lets the matter drop.
* A strange inversion happens in ''Manga/RanmaOneHalf''. Akane adopts an [[RidiculouslyCuteCritter adorable black piglet]] as her pet, which unbeknownst to her, is Ranma's exceedingly violent and hostile rival Ryoga in cursed animal form. As a result of her affectionate treatment, and because he's incredibly lonely due to his WalkingTheEarth lifestyle, ''being'' the pet causes Ryoga to fall hopelessly in love with her. This greatly softens his character and partially contributes to his eventual HeelFaceTurn (as he'll nearly always prioritize Akane over his grudge against Ranma, which allows for numerous EnemyMine team-ups). Of course, there's the questionable morality of disguising himself as her pet in the first place, but hey...
* From ''Manga/ShamanKing'': Hao's androgynous companion, Opacho, who uses toddler-speak and turns into a sheep. D'aww.
* From ''LightNovel/{{Slayers}}'': Not quite to the same extent, but Zelgadis acts far less like a JerkAss and more like a casual, if not aloof young man when Amelia's around. Compared to the other members of the group, he has an easier time softening up around her. Even though there is far less ShipTease from them in the novels, he still gravitates toward her there.
** A straighter example is Luke's bounty hunting partner Millina. She convinced him to end his assassination job, and he winds up falling for her to the point of [[TastesLikeDiabetes gushing over everything she says]] since then.
* In ''Webcomic/AxisPowersHetalia'', Switzerland is a gun-toting Gunslinger JerkAss. But when he's with his adoptive sister [[TokenMiniMoe Liechtenstein]], a completely different side of him emerges.
* Zwei, the cold-blooded assassin in ''PhantomOfInferno'', adopts Cal, the kid sister of a dead hooker, in an attempt to protect her from his superiors. With a cute little kid tagging around behind him, he stops acting like the borderline villain he'd become and starts to ease back over into more standard AntiHero territory.
* [[JerkAss Cold, sociopathic gun-for-hire]] Katana from ''Anime/GadGuard'' has the adorable little blonde girl Sayuri. Though he finds her annoying at first, after following him around for a while insisting she's his "fwend" and getting into danger a couple of times, she makes him see the [[HeelFaceTurn error of his ways]].
* Double subverted in ''Anime/YuGiOhGX''. Amon's little brother acted as one for him, but Yubel convinced him ditch his loyalty to the Garam group in order to fulfil his will and become king. [[spoiler:After that, he sacrifices the woman who loved him and he loved back for power by unleashing Exodia. The double subversion comes in when he [[UtopiaJustifiesTheMeans states that he will become king to make a perfect world]] so that no one suffers what he did nor can act on their deep, dark desires. This renders Yubel unable to feed off him, as he's not exactly 'evil.']]
* Ex-JerkAss, now JerkWithAHeartOfGold [[AntiHero Jin Akutsu]] from ''Manga/ThePrinceOfTennis'' has not one, but ''two'' Morality Pets. One is his ForgottenChildhoodFriend Takashi Kawamura, the other is cute boy Taichi Dan.
* From [[Franchise/StarWarsExpandedUniverse Star Wars Manga]], ''Darth Vader'' had a secret apprentice to soften him just a shade. No, not [[TheForceUnleashed Starkiller]]. A Jedi child named [[http://starwars.wikia.com/wiki/Tao Tao]]. Vader killed Tao's family, razed his planet from orbit, and spared Tao himself after being attacked by the child and sensing a lot of raw Force potential. Then he tried training the child, but since DefeatMeansFriendship Tao refused to tap into his rage and hatred, endured Vader's frustration at this, and was eventually told that because of his weakness he was free to leave. ...Not something Sith say often.
** And then the Emperor found out and had Vader mortally wound Tao, and for whatever reason Tao ''still'' didn't hate Vader, and was in fact glad that Vader was taking him to die on his homeworld. The homeworld that Vader razed. And when there, Tao saved him from a planet-hopping vengeful Tusken Raider, then told Vader that there was still good in him, before dying and making the Dark Lord feel remorse. This manga is quasicanon at best.
* In ''Manga/KenichiTheMightiestDisciple'', Kenichi's sister Honoka is pretty much the sole reason that Tanimoto doesn't act like a total jackass.
* In ''Anime/{{Noein}}'', cute little Miho serves as JerkAss villain Atori's Morality Pet. He was initially introduced as a PsychoForHire villain but eventually gets bumped on the head and loses his memory as well as his JerkAss nature. He grew a fondness for her during this time, but after his memory (and true nature) returns and he starts being a jerk ass villain again, Miho is still able to bring back the dormant good and kindness in Atori, which eventually leads to his [[spoiler:HeroicSacrifice]].
* In ''Anime/EurekaSeven'', Dominic is with the bad guys, sure. But his [[LoveMartyr kindness]] to [[DarkActionGirl Anemone]], who alternates between [[CuteAndPsycho violently insane or just insane]], makes it really hard not to feel for him, especially when they play up his NotSoDifferent aspect with the hero of the story, who is also devoted to protecting Eureka, the girl he loves.
** Holland is a major JerkAss toward Renton for a good part of the series, but he has a major soft spot for Eureka, practically to the point of a BigBrotherInstinct. [[spoiler: He has good reason to do so: she's part of the reason he came to his senses and abandoned the military death squads he served under.]]
** The little kids seem to be this to Eureka. [[spoiler:Flashbacks show her as having been cold, efficient, and mechanical, essentially a killing machine who only knew how to follow orders, when she was a part of the military. Then one day, she found three small kids that somehow survived the violent massacre ''that she just committed''. Something about seeing them like that, vulnerable and utterly terrified, kick started something inside her, made her more human until she became the gentle, motherly girl she is when the series begins.]]
* Inverted twice in ''Manga/DeathNote'', which has what could be called an 'immorality pet'. At first, Light (and the reader) believe that Ryuk, whose spare Death Note leads Light to become a WellIntentionedExtremist MagnificentBastard, is his immorality pet. However, it's actually Light who is Ryuk's immorality pet, providing him with some interesting [[ForTheEvulz sick entertainment]], and when Light no longer becomes interesting, [[spoiler: Ryuk kills him.]]
** Kind of played straight with Light's affection for his little sister Sayu and Mello's reaction to [[spoiler: Matt's death]], though.
*** That may have been true for pre-timeskip Light, but post timeskip, there's not much evidence that Light feels any kind of affection for his family, [[TheSociopath or anyone for that matter.]] To prevent his plans from being ruined, [[spoiler: he attempts to kill her after she is abducted]], but doesn't only because it wouldn't make sense for Kira to do that. He also shows no reaction at all to her [[spoiler: near catatonic state following the abduction]], meaning that Light likely sees Sayu as nothing more that another person he could potentially use to further his own goals, much like all the people he interacts with.
* In the later chapters of the manga version of ''YamiNoMatsuei'', [[IllGirl Ukyou]] [[VictoriousChildhoodFriend Sakuraiji]] is the Morality Girlfriend to the DepravedBisexual Muraki.
* Bando from ''Manga/ElfenLied'' has almost no redeeming features, being a {{Jerkass}} BloodKnight who kills either for fun or revenge and beats up people for any slight provocation. But when he ends up basically homeless waiting for an opportunity to kill the person who almost killed and crippled him, he kind of becomes friendly towards Mayu, who has fled from her sexually abusing step-father and depressed mother. When she and her friend are assaulted by a man several times worse than him, he does get his opportunity to be a BigDamnHero.
** Chief Kurama has Nana, one of the mutants experimented on he has grown attached to and he tries to help as much as he can. While still taking part in the cruel experiments with the mutants. [[spoiler:She is kind of a substitute for his own mutant daughter, who is so dangerous he tried to kill her after birth, which resulted in his wife's death when she tried to stop him, and their daughter growing up in a sealed vault fed by tubes.]]
** Also Lucy has Kouta, but that was actually the reason the whole mess got started...
* Keith Anyan in ''Manga/TowardTheTerra'' has two, Sam Houston and Jonah Matsuka. Sam's interaction with Keith, particularly as the series progresses, always serves as an outlet for Keith's otherwise mostly repressed humanity; at one point Suena observes to herself that Sam is the only person Keith opens his heart to. Matsuka's relationship with Keith is a [[MindGameShip bit more tangled]], but also ultimately humanizing.
* ''Manga/BlackButler'': Sebastian has his cat friends (and possibly Ciel himself depending on character interpretation—whether he genuinely cares about Ciel or if he wants nothing more than to eat his soul), Ciel has his household staff and Elizabeth.
* ''Anime/{{Texhnolyze}}'': Ran for Ichise, to some extent.
* ''Anime/DarkerThanBlack'''s protagonist, Hei, is an extremely dark AntiHero, being a notorious assassin for TheSyndicate who's been forced to abandon most of his morals or die. However, he also has major [[BigBrotherInstinct protectiveness issues]], so if you mess with the [[{{Moe}} adorable]] EmotionlessGirl who acts as his MissionControl, you will suffer a world of hurt.
* ''KaguyaHime'': Akira initially thought Midori was this to Yui, but... not really. In vol 13, one of mafia boss Mamoru's henchmen cheerfully remarks that Kaede has become this for him, goes on to make a joke about [[HoYay how it looks from the outside]]... and promptly apologizes, worrying for his life, when [[DeathGlare Mamoru glares at him, saying absolutely nothing]].
* Subversion: Lua Klein from LightNovel/{{Baccano}} is a quiet, gentle WomanInWhite who seems like a perfect foil for her [[LargeHam extremely enthusiastic]] PsychoForHire squeeze Ladd Russo. However, she's really a suicidal masochist who seems to privately thrill at the idea of being murdered by Ladd, and Ladd's calm, sincere promises to kill her someday only emphasize his craziness.
** However, it's played more straight when Ladd's arguably [[PetTheDog only redeeming act]] in the entire show is to [[spoiler: throw himself off a moving train to ''save'' Lua, sacrificing his arm in the process.]]
* Yuusei, the protagonist from ''Luck Stealer'', is an assassin who will only kill criminals. This is because he wants to be a good person for the sake of his daughter.
* Hibari, Mr. "Don't crowd or [[CatchPhrase I'll bite you to death]]" from ''Manga/KatekyoHitmanReborn'' has two literal {{Morality Pet}}s in the form of his pet bird [[HeadPet Hibird]] and his hedgehog [[CoolPet Roll]], the ''only'' two beings in the entire series he is not violent towards.
** Then there's [[NietzscheWannabe Mukuro]] whose HeelFaceTurn is coupled with the introduction of [[IllGirl Chrome]], his Spirit Medium/Vessel, who he is shown to be rather fond of to the point that she is arguably his BerserkButton.
* While ''LightNovel/{{Durarara}}'''s Shizuo Heiwajima isn't evil so much as he just [[HeroWithAnFInGood sucks at being a good guy]], it's noted that there are a handful of individuals (such as Tom, Kasuka, Celty and later Akane) that motivate Shizuo to go the extra mile to keep his [[HairTriggerTemper violent temper]] in check. [[spoiler:This is what keeps him from lashing out at the {{Yakuza}} when they go after and corner him. He doesn't care what the {{Yakuza}} do to him, but he realizes that if he attacks them (and thus [[NotHelpingYourCase destroys any chance of convincing them that he didn't kill three of their men]]), they're likely to go after his brother or friends to get back at him. This thought is just enough to hold him back]].
** Shinra ends up fulfilling this roll for Celty, his father Shingen and surprisingly [[spoiler: Izaya. It's to be noted that Izaya leaves Shinra out of his plans more often then not, and DOES try to help him during the Valentine's Day special in the novel. Naturally, this might have to do with the two knowing each other since middle school [[NoodleIncident and Izaya did something to him that makes him shut up immediately whenever Shinra brings it up.]] Turns out that Shinra protected him during middle school from someone that tried to kill Izaya with a knife by taking the wound for him; maturally, this is probably the only kind thing that has happened in Izaya's life.]]
* ''Manga/VampireKnight'': Yuuki is this for Kaname.
* ''Anime/WolfsRain'': Toboe for Tsume.
* [[TagalongKid Rana]] serves as one of these for the villainous servant Airi in ''Anime/QueensBlade''. She literally starves herself to death (but she recovers ) due to the kid's influence.
* ''HaouAiren''. Kurumi Akino became this for Uo Hakuron after saving his life when he was wounded in the streets of Tokyo. Even more so after she learns his DarkAndTroubledPast, since she actively aims to become this for him. Not very GenreSavvy in regards to [[BastardBoyfriend what kind of guy he is]], eh, Kurumi?
* ''Manga/HunterXHunter'': Komugi, the blind IllGirl who can only play board games, to Meryem, the [[ImAHumanitarian man-eating]] [[ArrogantKungFuGuy Chimera Ant King]].
* ''Manga/RosarioPlusVampire'': Tsukune is somewhat this to Inner Moka, and tends to keep her from going too far, first seen when he defended Kurumu.
* ''AiOreLoveMe'': Mizuki tends to bring out the heart of gold in [[JerkWithAHeartOfGold Akira]].
* Yanagin in ''Manga/DailyLivesOfHighSchoolBoys'' is a strange example as she ''made herself'' [[spoiler:Habara]]'s morality pet. Eight years ago, she was part of the ten-kid alliance that challenged [[spoiler:Habara]], who at the time was an EnfantTerrible-level TheBully who terrorized ''every'' boy in town--and barely made a draw. She then started to hang out with the person she just fought with, keeping an eye on her in case she relapses back. This turns out to be a good thing as the latter [[ReformedButRejected still has social acceptance issues up to this day]].
* In ''SaintBeast'', Kira's little brother, Maya, is his morality pet as he has a bit of a BigBrotherInstinct. Otherwise he can be pretty {{jerkass}}.
* Manga/{{Toriko}} is more neutral than anti-heroic at the start, but hanging out with [[TheHeart Komatsu]] turns him into a proper hero. Komatsu ends up as the morality pet for other characters as well, including SociopathicHero Zebra and the creepy as hell Livebearer.
* ''Manga/AttackOnTitan'':
** Krista is this to [[{{Jerkass}} Ymir]], tempering her worst behaviors and providing her with motivation to be heroic.
** Eren and Armin have shades for this for Annie, providing her most [[DefrostingIceQueen humanizing]] character development.
** [[spoiler:Reiner]] suffers a particularly horrible example of BecomingTheMask, thanks to the others being this for him. In particular, he's shown to be protective of Armin, Connie, and [[IfItsYouItsOkay Krista]].
* ''Manga/PuellaMagiOrikoMagica'' has Yuma, who acts as this in relationship to [[JerkWithAHeartOfGold Kyouko]] from [[Anime/PuellaMagiMadokaMagica the original series.]] Given Kyouko's backstory, Yuma doesn't take long to get in her good graces as her apprentice. In the ''[[ForWantOfANail Symmetry Diamond]]'' spinoff, she acts as this to [[BigBad Oriko]] and [[TheDragon Kirika]]; ordinarily [[LonersAreFreaks social pariahs]] who [[StartOfDarkness become villains in most timelines]], they waste no time in assuming guardianship over Yuma after [[BecauseYouWereNiceToMe she treats them kindly.]]
[[/folder]]

[[folder:Comic Books]]
* Alfred, Robin and the rest of the "Bat Family" function as Franchise/{{Batman}}'s ties to family and sanity. It's worth pointing that their ideas of sanity and/or morality doesn't necessarily fit with the rest of the world's, the Batfamily being [[DysfunctionJunction what it is]].
** Damian, the current Robin, varies between BrattyHalfPint and full-on SociopathicHero, having used deadly force on both villains and his own adopted brothers. [[http://scans-daily.dreamwidth.org/4175821.html#cutid1 He also seems to be building a zoo in the Batcave]].
* {{Wolverine}} has had a number of unofficial "sidekicks" used to balance out his ferocity and vaguely thuggish appearance. The tendency of them being young girls in most media -- Jubilee, Kitty Pryde, a younger version of Rogue -- is almost [[MemeticMutation a cliche]], possibly [[LampshadeHanging lampshaded]] in his humorous short alliance with ''PowerPack'''s ''five-year-old'' Katie Power. And when [[ComicBook/{{Runaways}} Molly Hayes]] visited ComicBook/XMen Headquarters, guess who ended up babysitting her?
** Parodied in [[http://somethingpositive.net/sp05032008.shtml this]] ''SomethingPositive'' comic.
*** Only it wasn't Pixie who ended up Wolverine's new sidekick, it was Armor, also a young girl.
** Inverted in the case of {{X-23}}, whom he least tries to edge away from ''utter'' sociopathy and hoped to secure a more-or-less ordinary life for before Summers decided she would be a good addition to the covert wetwork squad he was putting together.
*** Oddly enough, X-23 often acts as a Morality Pet for [[JerkWithAHeartOfGold Emma Frost]]. And has a Morality Pet of her own in the form of Hellion. Later she's acting as a morality pet for Gambit (and vice-versa). To a point she even managed to be one for ''ComicBook/{{Daken}}'', of all people (or at least about as close as it gets for him).
* Subverted: Harley Quinn, TheJoker's sidekick, is just as insane as he is.
** Harley has her Hyenas too.
** The easiest way of making the Joker look like a complete and utter bastard is for him to betray Harley. Harley does have [[EvenEvilHasStandards a stopping point]] when the Joker gets too out of control. Her betrayal of him is much more forgiven than his betrayals of her (which tend to be very violent).
** She has also acted as one to Poison Ivy. Whether or not Harley is around often determines whether Ivy is a WellIntentionedExtremist serial killer, or merely Harley's snarky and more level-headed CoolBigSis. ''No Man's Land'' also gave Ivy over a dozen morality pets in the form of a group of orphans she takes in and cares for in the quake ravaged city. When she surrenders to the police rather than let one of them die, even Batman admits that despite her claims to the contrary, [[CrowningMomentOfHeartwarming Ivy is still a human being at heart]].
* In James Robinson's ''Comicbook/{{Starman}}'', The Shade (already ret-conned from villain to just plain AntiHero) has a certain respect for Jack "Starman" Knight and falls in love with police officer Hope O'Dare. His true Morality Pet, though, is his home, Opal City; it is mainly because of his vow never to commit crimes in Opal City that he is able to make friends with the local law enforcement.
* In the IDW ''[[TransformersOngoing Transformers]]'' comic, Sixshot is a war machine who doesn't think twice when instructed to wipe out entire civilizations, and was a prime candidate for membership with the planet-euthanizing Reapers. But there's nothing in this universe that would make him hurt his buddies/fan club the Terrorcons.
** On a similar note Runamuck and Runabout are two thugs, basically only in the Decepticon army because they get to carry a gun and cause some damage. But if you hurt one in front of the other you're gonna be in trouble.
* J. Jonah Jameson from ''Comicbook/{{Spider-Man}}'' is more of a cranky, cigar-chomping foil than a villain [[CharacterizationMarchesOn (these days)]], but Robbie Robertson acts pretty well as his conscience, and you can count on seeing his softer side whenever his astronaut son John shows up.
** Harry Osborn was occasionally this toward his father Norman (aka the Green Goblin); in one storyline, Spiderman defeated the Goblin by showing him his son in the hospital after a drug overdose.
* Todd "Squee" Casil is the involuntary morality pet of JohnnyTheHomicidalManiac, who sneaks into his house for medical supplies and once saved Squee from a pedophile. While Squee is scared shitless of Johnny (calling him the "scary neighbor man"), Johnny tends to see himself as something of father figure to Squee, dispensing [[FamilyUnfriendlyAesop aesops]] because he doesn't want Squee to end up like he did.
* In ''UsagiYojimbo'', [[AxCrazy Jei]] has [[CheerfulChild Keiko]]. Whom he calls his innocent, and she calls Uncle.
* Alexander, the son of ComicBook/{{Ares}}, serves as this to the Greek god of war in the MarvelUniverse. To the point of being driving factor in his HeelFaceTurn.
* ComicBook/BlackCanary [[InvokedTrope invokes]] the trope in ''ComicBook/BirdsOfPrey''. As she and [[DarkActionGirl Lady Shiva]] [[OddFriendship begin to become friends]] she hopes that she can turn Shiva away from her violent and bloody lifestyle, and deliberately works with her in order to give her regular human contact and friendship. Shiva, however, recognizes that Canary is working to reform her, [[InvertedTrope and lets Canary get into her life and see what she is really like to get her to]] ''[[InvertedTrope stop]]''.
* In ''FinalCrisis,'' [[MadScientist Dr. Sivana]] wound up betraying [[GodOfEvil Darkseid]] after watching one of his daughters be enslaved by the Anti-Life Equation.
* It didn't last long, and she didn't make him turn good or consider turning good, but the appearance of ComicBook/{{Loki}}'s mortal daughter Tess Black in the Spider-Man comic "The Coming of Chaos" made the God of Mischief look less like a MagnificentBastard.
* Deconstructed in Hunter Rose's relationship with his adopted daughter Stacey Palumbo in ''ComicBook/{{Grendel}}''. He undoubtedly does have good intentions towards her (although there are some faint squicky implications of WifeHusbandry), but he's too basically sociopathic to understand what a child needs, and treats her as a pretty trophy at adult parties rather than giving her a normal child's social life. When she finds out that he's really the supervillain Grendel, she arranges his death in revulsion, and the after-effects of her relationship with him completely blight her adult life.
[[/folder]]

[[folder:Fan Fic]]
* In the Ranma, [[MegaCrossover and other things]] FanFic HybridTheory. Akane is a subversion of this. She and Chris think that his promise to her is keeping him from descending into true villain-hood, but it doesn't end up meaning much at all.
* Adamska's love for Otacon [[spoiler: and his alternate-future self's love for Big Boss]] in FanFic/{{Stray}}.
* [[FanFic/ThePrivateDiaryOfElizabethQuatermain Elizabeth Quatermain]] is a cross between this and the {{Protectorate}} for GentlemanThief Skinner.
* Chester A. Bum is this for people in the [[FanFic/HookerVerse club]]. He gives them something to look after, which is what they need.
* [[{{TheHeroine}} Rainbow Dash]] plays this role toward [[{{TheLeader}} Firefly]] in the first few chapters of ''Fanfic/AceCombatTheEquestrianWar''.
* OriginalCharacter Suzie is this for Harry/Tristan in ''FanFic/TheJadedEyesSeries'', they grew up together at the OrphanageOfFear and [[BigBrotherInstinct she's like a little sister to him.]] Also Harry/Tristan himself acts as one for Voldemort, helping him to reign in his madness.
* The ''Manga/DeathNote'' fanfic ''Fanfic/StoryOfTheCentury'' has OriginalCharacter [[{{Tsundere}} Erin]] as a {{Protectorate}} and Morality Pet of sorts for [[AntiHero L]]. It's zig-zagged, though: he does treat her more kindly than he would [[EnemyMine Light or Misa]], but she still can't stop him from [[WhatTheHellHero doing most of the crazy things he does on the case]] (not that she doesn't try), [[KickTheMoralityPet and if it came down to it, not even she's safe]] [[ManipulativeBastard from his dirty play.]] Watari may have been this for L too, as [[spoiler:L seems to take it hard at the end when Watari dies.]]
** It could be argued that the entire task force is this for him; he doesn't show it much, but a few oneshots suggest that he [[spoiler: pulled his HeroicSacrifice at least partly for their sake.]]
* In the ''WesternAnimation/RiseOfTheGuardians'' fic ''[[https://www.fanfiction.net/s/8751000/1/Guardian-of-Light Guardian of Light]]'', Pitch has Helen, [[spoiler: his biological daughter]]. While at first he tried to turn her into [[DaddysLittleVillain his Nightmare Princess]], her influence causes him to rethink and realize that he cares about her too much to do that to her. [[spoiler: This leads to his HeelFaceTurn.]]
* In the ''Franchise/StarWars'' fic ''[[https://www.fanfiction.net/s/9062775/1/The-Lost-Child The Lost Child]]'', even after turning to the Dark Side, Anakin still cares about Ahsoka enough to let her live.
* The ''Film/StarTrek'' fic ''[[https://www.fanfiction.net/s/9694363/1/Safe-and-Sound Safe and Sound]]'' has Lucille Harewood (the little girl in the opening of the [[StarTrekIntoDarkness second film]]) be this for Khan. She is able to stop him from [[spoiler: killing the man who killed most of his crew, and by the end of the story, he decides to accept Starfleet's offer of rehabilitation for her sake]].
* Another ''Film/StarTrek'' example: Towards the end of the fic ''[[https://www.fanfiction.net/s/9795158/1/Written-in-the-Stars Written in the Stars]]'', Spock begins to suffer the effects of Pon Farr which causes him to become feral, reverting back to what Vulcans were like before the teachings of Surak. He's in such a state that he doesn't recognize any of the crew and attacks anyone who comes near him...apart from Fem!Kirk. She's the only one he still seems to recognize and even defends her from a group of other Vulcans in a crazed state.
** In both Mirror universes (the original and the alt reality version) the evil versions of Spock and Fem!Kirk are each other's MoralityPet. And to a lesser extent, their crew is this to them, too.
* In ''Fanfic/TeenageJinchurikiShinobi'', Himeko, Sasuke's younger cousin. Unlike in canon, Sasuke [[spoiler: does not make a FaceHeelTurn.]] This could be attributed to the fact that both Himeko is still living and that he cares for her after the Uchiha massacre, and that Naruto is his best friend here and they have more of a FriendlyRivalry here rather than a bitter one.
* [[OriginalCharacter Amanda Adams]] from ''Fanfic/NeverHadAFriendLikeMe'' is this to [[WesternAnimation/FairlyOddParents Norm]] the Genie, or to be specific, ''grows'' into. Her selflessness annoys Norm at first, but soon it wins him over, and he goes from waiting for her to make a selfish wish he can [[JackassGenie mess up]], to giving her a beautiful dress, no wish required. It is more telling when Amanda becomes Timmy's friend, he at goes from wanting revenge on Timmy, but keeping Amanda out of it [[spoiler: to saving his life when the Pixies and Anti-Fairies decide to off him and Amanda.]]
[[/folder]]

[[folder:Film - Animation]]
* ''WesternAnimation/DespicableMe'': Margo, Edith and Agnes for Gru.
* Yubaba's son Buu plays this role in ''SpiritedAway'', being the only person she cares more for than money. In fact, when Haku implied that he had taken Buu away (when he didn't), she went full MamaBear on him to find out where her baby was.
** Chihiro is this herself, able to bring the best out of the grumpy Lin and Kamaji and the cold Haku and geniunely befriends No-Face.
* In ''CareBears [[TheMovie Movie]] II,'' [[BigBad Dark Heart]] [[DealWithTheDevil manipulates]] a girl named Christy into helping him, but develops affection for her after she saves him from drowning. After accidentally harming her, his remorse is enough to not only help save her, but also [[spoiler:[[BecomeARealBoy turn him human]]]].
* In ''Disney/{{Tangled}}'', Rapunzel becomes this for Flynn Rider. While he's not an evil guy, he still starts off showing very little concern for his cohorts (he abandons his previous two partners in crime to be arrested and, likely, executed). When he ends up dragging Rapunzel into dangerous situations though, he does whatever he can to take care of her, and ends up falling in love [[spoiler:and dying to set her free from Mother Gothel.]]
* In ''Disney/TreasurePlanet'', Long John Silver has a literal Morality Pet called Morph, a cute bloblike alien that apparently represents his conscience. One could argue Jim Hawkins himself is another Morality Pet for Silver.
* ''{{WesternAnimation/Epic}}'': Mandrake, for his whole EvilOverlord schtick, really does care about his son.
[[/folder]]

[[folder:Film - Live Action]]
* ''Literature/TheBlindSide'': SJ for Michael.
* Chewbacca is pretty much Han Solo's Morality Pet. If he weren't so good at guilting his buddy, the ''Franchise/StarWars'' trilogy would have been over after one movie.
* In ''Film/RepoTheGeneticOpera'', Marni acted as this for Nathan. When she died, the role was fortunately taken over by Shilo, who in turn became Nathan's MoralityChain.
* Mass murderer Riddick managed to find a few morality pets in ''Film/PitchBlack'', Fry, Jack, and Imam. Of course, [[spoiler: Fry died at the end of Pitch Black,]] and [[spoiler: Jack (Kyra) and Imam died at the end of ''Film/TheChroniclesOfRiddick'', leaving Riddick with no more morality pets, and a whole empire of necromongers at his command!]] Be afraid. Be ''very'' afraid.
* His brother and mother are this for the [[HitmanWithAHeart protagonist]] of ''LittleOdessa''.
* Pita for Creasey in ''Film/ManOnFire''. When Pita gets kidnapped, [[RoaringRampageOfRevenge all hell breaks loose]].
* Ira, who plays TheChick in a FiveManBand, for RetiredMonster Charlie in ''SuicideKings''.
* Averted in ''Film/SweeneyToddTheDemonBarberOfFleetStreet''. Mrs. Lovett seems to have a soft spot for Toby and treats him as a son, while trying to keep him sheltered from her and the title character's business of murdering people and baking them into pies. Despite this, when he catches on to Sweeney's murdering ways (through his discovery of a purse belonging to Pirelli, his last master and Sweeney's very first victim, in Mrs. Lovett's possession), Mrs. Lovett's first instinct is to lock the poor kid into the basement where the pies are made preparatory to having Sweeney murder him. To top it all off she's also been feeding him human meat without him ever realizing it.
** Maybe played straighter with Sweeney and Anthony. He's a non-threatening, innocent young character, whose puppy love for Johanna might reflect the young Sweeney's for Lucy.
* ''{{Predators}}'': Unlike [[AntiHero the rest of the cast]], Isabelle is clearly a [[GoodIsNotNice tough-minded but fundamentally moral person]]. So the fact that she persistently tags along with Royce--and trusts him despite his erratic loyalties--gives the strong indication to the audience that there may a [[JerkWithAHeartOfGold decent person somewhere under Royce's mercenary exterior]], as does [[PetTheDog his behavior toward her]].
* Harley, the Tennessee boy who helps Iron Man repair and recharge his armour, in ''Film/IronMan3'' is this to Tony Stark.
* ''Film/HowTheGrinchStoleChristmas'' has Max be a literal one. Although he participates in his master's evil deeds, he makes the Grinch save Cindy from the machine in the Post Office. He even has his own Christmas party while the Grinch is down in Whoville... until his master interrupts him and throws him out.
* ''Film/NonStop'': Were it not for Becca, a little girl who's on her first flight and rather scared of it, we would hardly see Marks acting like an actual human being as he helps her cope with her fear.
[[/folder]]

[[folder:Literature]]
* Inverted in ''{{Duumvirate}}''. Luke is Paul's '''Immorality''' Pet, there to let him know that brutality, murder, and full-scale genocide are perfectly all right.
* In the ''{{Dragonlance}}'' novels, the ambitious young wizard Raistlin Majere (who goes from TallDarkAndSnarky party member and EnsembleDarkHorse to full-on AGodAmI BigBad between series...) has an early PetTheDog moment with the downtrodden gully-dwarf Bupu, whom he unfailingly treats with kindness despite the cruelty and ridicule [[FantasticRacism her race is treated with]] on general principle. She becomes symbolic of his last ties to humanity and shows up several more times in his life, including [[spoiler: a heartbreaking postmortem appearance in Raistlin's doomed, ash-choked future world.]]
* In the ''ChaletSchool'' series, [[OnlyKnownByTheirNickname the Robin]] acts as one to Jo, and later, to some of the more difficult girls, such as Gwensi Howell (''The Chalet School at War'') and Zephyr Burthill (''Jo To The Rescue''). When we first meet her, she's a cute IllGirl with an exotic accent and a dead mother. Practically everyone likes her, and being mean to her is considered an act of [[KickTheDog kicking the dog]]. She even becomes a nun later on in the series.
* In the ''Literature/{{Discworld}}'' novels by Creator/TerryPratchett, Captain Carrot's first appearance (in ''Guards! Guards!'') would count as being a Morality Pet for the Night Watch--he is everything they are not and, in many ways, are supposed to be. Even his naivete serves him well, in Ankh-Morpork of all cities.
** Similarly, Lord Vetinari might be said to have a group of Morality Pets in the forms of his favorite catspaws: Vimes, von Lipwig, etc. A more literal Morality Pet might be the Patrician's [[spoiler:since ''Making Money'', late]] wire-hair terrier Wuffles, rumored to be the only living thing he cares for, and [[spoiler:whose grave he still visits regularly]]. A more metaphorical Morality Pet might be the city itself, which he treats with care and even affection, striving to improve it, to expand its influence and power, to modernize it--but always, and most importantly, to keep it running.
** However, note that neither the Night Watch nor Vetinari are "villains" per se. (Though Vetinari ''thinks'' he is a villian, but that's because, as we learn from his BreakingSpeech in ''Guards! Guards!'', he thinks ''everyone'' is a villain. In Vetinari's world, there are only evil people, but some of them are on different sides. He's on the side of Ankh-Morpork.)
** A version is [[TheGrimReaper Death's]] adopted daughter Ysabell which humanizes him, but inverted in that, while Death is shown as reasonable, in her first appearance in ''The Light Fantasic'' Ysabell is [[spoiler:literally AxCrazy]].
*** Reversed with Death's granddaughter Susan. She was portrayed as rather cold in her first appearance, and it was arguably interacting with Death that humanized her (at the end she even allows herself to cry over her parents' death, something she had refused to do for years). Her subsequent appearances have had her working with children (as a governess and later a teacher), and these jobs seem to have [[DefrostingIceQueen increased her humanity further]].
* In the ''Literature/{{Gone}}'' series, Diana for Caine, although their relationship does show some abusive patterns on both sides. In book four, he TookALevelInJerkass and drove her away
* In ''The [[Literature/TheWheelOfTime Wheel of Time]]'' series, the Aes Sedai Cadsuane attempts to use Tam al'Thor as one to make his son, [[TheChosenOne Rand al'Thor]], remember his youth and humanity. [[FromBadToWorse After some]] [[MyGodWhatHaveIDone tense confrontations,]] it eventually works.
* One of ForgottenRealms' old villains, the Zulkir of Enchantment [[http://forgottenrealms.wikia.com/wiki/Lauzoril Lauzoril]] was a MagnificentBastard leading the Imperialist (pro-conquest) party of Thay. In ''The Simbul's Gift'' he turns out to be caring for his wife and particularly daughter, up to the point of taking an oath that his magic will never touch her, ever. [[note]]Dubious idea, but understandable considering [[{{Cloudcuckoolander}} what]] was done to his wife "[[ForYourOwnGood for her own good]]" by ''her'' father. Lauzoril killed him, but could not undo damage.[[/note]] [[spoiler:On behalf of his daughter he eagerly breaks not only Thayan law, but rules ''he set for himself''. And risks his life.]]
** Artemis Entreri and Jarlaxle [[spoiler:Baenre]] act as each other's morality pet, in a sense, as their friendship shows that they are capable of such. (It's especially intriguing when one considers Jarlaxle seems to be trying to ''reform'' Artemis.) Artemis also has a halfling friend in his home city, whom he respects and, to some degree, trusts. Note that Jarlaxle isn't actually evil: Artemis is less his ''Morality'' Pet and more his 'Look, he's capable of forming actual positive emotions right there in front of us' Pet.
* The humble scholarship boy Redwing to the unscrupulous millionaire's son Vernon-Smith in the Literature/{{Greyfriars}} series. A slight variation in that while Redwing's steadying influence generally helps Smithy stay on the straight-and-narrow (well, roughly), when Smithy flat-out [[GoodIsBoring means to be bad]], Redwing's intervention is met with a hypersensitive hostile backlash that can make things worse. Later in their friendship (for example, the Smedley series) Redwing learns not to waste a 'pi-jaw' on Smithy, and simply waits anxiously for the moment to [[GetAHoldOfYourselfMan beat some sense into him]].
* In ''The Vampire Tapestry'' by Suzy [=McKee=] Charnas, psychologist Floria Landauer functions as this for the vampire, Weyland, in that he reveals himself honestly to her, will not harm her, and even, for her sake, refrains from killing one of her clients who is harassing him.
* Numerous examples from ''ASongOfIceAndFire'':
** Brienne for Jaime Lannister. After his HeelFaceTurn, Jaime actually pretty much gathers up a Morality Menagerie - Pia, his squires, Tyrion, Tommen, and Myrcella all inspire feelings of devotion and affection in him.
** Tyrion in turn has Jon Snow and Bran. His early interactions with them demonstrate that he isn't such a bad guy. Later, he grabs fellow dwarf Penny.
** Both Stark sisters play this role to Sandow Clegane at different points.
** Davos is Stannis's Morality Pet. Their relationship is one of the only really likable things about Stannis.
* In an interesting twist, Lucius, Narcissa and Draco Malfoy all seem to play this role for each other in ''Literature/HarryPotter,'' most particularly when [[spoiler:Narcissa helps Harry fake his death, just so she can go back to Hogwarts and find Draco]].
** In a weird, [[{{Squick}} squicky]] case, one could argue Nagini serves this role for Voldemort. Granted, Nagini's evil too...but still, she seems to be the only creature he shows any true affection for, as messed up as that is.
*** Depending how you look at it, Voldemort is either Bellatrix's morality pet or a subversion, since her love for him only makes her ''more'' AxCrazy.
** [[spoiler:Kreacher]] seems to have filled this role for [[spoiler:Regulus]] (or, for that matter, [[spoiler:Regulus' memory for Kreacher]]). Really the whole [[spoiler:Black family]], since Hermione speculates his secrecy was explicitly to protect them from Voldemort's wrath.
* In Creator/WilliamShakespeare's ''Theatre/TitusAndronicus'', the otherwise cosmically evil Aaron goes to great lengths to protect his baby son/morality pet.
* In ''Literature/IClaudius'', Tiberius is portrayed as a pedophile who murders most of his relatives and a good chunk of the senate but for some reason he insists on having an innocent and virtuous senator live with him in his Evil Playboy Mansion on Capri. When the senator decides to commit suicide Tiberius is distraught, and actually goes so far as to tear up some death warrants in the hope that this will convince the senator to live on. (It doesn't work: the man wasn't committing suicide to protest Tiberius's crimes, but [[ValuesDissonance because he was tired of life.]])
* In one of the tie-in novels for ''TabletopGame/WerewolfTheApocalypse'', WellIntentionedExtremist Arkady sets out to attack Malfeas, encounters a little girl who's held captive by Black Spiral Dancers, and spends some time first trying to get her out of the way and then trying to protect her as she follows him. [[spoiler:She's ReallySevenHundredYearsOld and a manifestation of the White Howler totem.]]
* Subverted in ''TheDeathOfTheVazirMukhtar'', where Griboyedov tries to help out [[ButtMonkey ensign Vishnyakov]], but ultimately fails (and what's more, the reason for it might be that his superiors, on whose decision Vishnyakov's fate depended, were somewhat antagonised beforehand by Griboyedov's aggressive lobbying of one of his projects), [[spoiler: and Vishnyakov blames him for everything and commits suicide.]]
* ''LonelyWerewolfGirl'' is one big book full of BlackAndGrayMorality. The darkest gray character of all is probably the most probably the title character, Kalix [=MacRinnalch=]. As of the second book, she's trying (Well, maybe trying isn't quite the word-being forced is more accurate) to go to remedial school. What's the only thing keeping her from quitting completely, in spite of all the werewolves trying to kill her, her anorexia and angstiness? Surprisingly enough, it's Vex (Short for Agrivex.) who keeps her from dropping out, admitting that she pretends college is fun to inspire Kalix.
* Johnny for Dally in ''TheOutsiders''. [[spoiler: When Johnny dies, Dally is so distraught that he pulls off SuicideByCop.]]
* In DeanKoontz' ''Frankenstein'' series, Mr. Lyss is humanized by the time he spends with Nummy, who he admits is the only person he's ever met that he doesn't hate. [[spoiler:At the end he visits the grave of the grandmother who raised Nummy, whom Lyss had never met, and thanks her for the greatest gift he's ever received.]]
* In ''BlackCompany'' series Darling seems to work as this for Raven, but as the time goes on it's clear that by focussing all that's good in him on her, he becomes even worse for everybody else, up to the point of [[MoralEventHorizon doing things]] [[EvenEvilHasStandards even other members of Company finds despicable]] [[PapaWolf to protect her]]. Later Croaker starts suspecting that [[EvilOverlord Lady]] wants to make him her own morality pet, to ensure she won't end up as Dominator and outright tells her [[SarcasmMode how well]] it worked for Raven.
* In the Literature/TimeScout series, Marcus is this for Skeeter, before his HeelFaceTurn. Afterward, he's devoted to the downtimers in general, but Marcus and his family are special.
* Istvan Bathory is this for Vlad Tepes in ''Literature/CountAndCountess'', although Vlad barely tolerates his presence and only acts kindly to him because he is Elizabeth's great-grandfather.
* Nipper the pigeon in Literature/{{Wringer}}.
* In the historical novel ''Literature/WingsOfDawn'': PUPPY! %% This entry was added automatically by FELH2. In case the wording doesn't make sense, rewrite it as you like, remove this comment and tell this troper.
* In the [[Literature/TheNightAngelTrilogy Night Angel Trilogy]], Ulyssandra acts as a bizarre example of this for Vi, in that the only reason it counts is because Vi didn't decide to kill her immediately.
* ''Literature/LegacyOfTheDragokin'':
** Benji, the SupportingProtagonist, is the key to redeeming [[spoiler: Zarracka]] because he is the first person to be nice to her in years.
** Invoked by Finn. When he wants to prove that he's not evil he points to his loving wife. "She wouldn't have married me if I were evil."
* Jem and Tessa, for Will in ''Literature/InfernalDevices''.
* Arguably, in P.G. Wodehouse's stories, Bertie Wooster plays this role with Jeeves (even though Bertie is nominally the boss). In the one Jeeves novel where Wooster does not appear, Jeeves shows no compunction about taking part in crime, and in the one story Jeeves narrates, he hints that he has had no reservations about serving criminal masters in the past. But while he's with the (stupid and ineffectual but lovable) Bertie, his awesome abilities are used for good alone.
* Clary for Jace in ''Literature/TheMortalInstruments'' - [[spoiler: The reason he didn't go with Valentine through the Portal in ''City of Bones'' was because he was thinking of Clary.]]
* By the time of [[Literature/StarTrekTheFall Star Trek: The Fall]], Dr. Parmak is Garak's Morality Pet. He openly refers to Parmak as his conscience, and seeks his presence when wrestling with his questionable personal history.
* Mags to Finnick in ''Literature/TheHungerGames'', as it also works on our heroine. Katniss immediately wanted to ally with Mags because she volunteered to the take the place of another woman, despite being elderly and having absolutely no chance of fighting off any of the younger, stronger tributes (and thus, very little value as an ally). Meanwhile, she views handsome, physically fit Finnick as one of her most dangerous enemies, and one of the most ruthless killers. Now, throw them together in the arena and Finnick tells her point-blank that he can't leave Mags and proceeds to carry her around on his back, because she's his mentor and one of the few people who genuinely likes him.
[[/folder]]

[[folder:Live Action TV]]
* ''Series/TwentyFour'':
** Renee Walker starts out as this for Jack Bauer...then [[JumpingOffTheSlipperySlope she cut a guy's thumb off with a jamb saw]].
** Some other characters such as Kim or Chloe can be this on occasion to Jack as well, with Chloe ''especially'' serving as this in the series finale.
** After [[CharacterDevelopment transitioning]] from complete JerkAss to one that still had [[JerkWithAHeartOfGold a good side to him]], Tom Lennox actually managed to be this to Vice President Noah Daniels.
* ''Series/BabylonFive'': Vir is pretty much [[ByronicHero Londo's]] Morality Pet, especially in seasons 2 and 3 [[spoiler:as Londo becomes more and more tainted by the Shadows.]]
* ''Series/BuffyTheVampireSlayer'':
** Dawn and Joyce fill the role for Spike. Spike values how they treat him. After [[spoiler:Joyce dies]], you can see that, as soulless bloodsuckers go, he's not all bad.
** Mayor Wilkins has this sort of relationship to his [[TheDragon Dragon]], [[HeelFaceTurn Faith]], who in turn regards him as a ParentalSubstitute. Cue PapaWolf-fueled VillainousBreakdown when Buffy [[spoiler:puts her in a coma]].
* ''Series/BurnNotice'':
** Michael's mother and to a lesser extent his brother are his morality pets. His mother is a straight example. Nate is more complicated as he is useless and morally dubious but harmless and he frustrates Michael a lot. However the fact that he awakens Michael's BigBrotherInstinct makes him this.
** Michael's more pitiful clients tend to be this for Michael as well.
** Michael is arguably ''Fiona's'' Morality Pet. She would be a lot nastier without him.
* ''Series/{{Charmed}}'': Chris is hinted to be this for evil Wyatt.
* ''Series/{{Community}}'':
** Annie for Jeff.
** This is rather ironic as in the first season finale, Jeff ultimately [[spoiler: chooses Annie as a representation of both change and being oneself in comparison to Britta and Slater.]] Quite literally, Annie was [[HannahMontana the best of both worlds]] for Jeff.
** Also Pierce; Pierce has on several occasions noted that Annie is his favourite, and if anyone is likely to provoke a glimpse into his extremely well-buried nice side, it's her. Conversely, Annie will also be the first to defend Pierce to the others.
* ''CriminalMinds'': In a very dark example, Ellie Spicer becomes this to Billy Flynn, the most prolific {{serial killer}} and rapist to appear on the show. Killing Ellie's grandparents when her father, Matt, was a child, Billy develops a "grandfather complex" towards Ellie. Killing Matt, Billy kidnaps Ellie and tries to turn her into a protege, treating her as the granddaughter he doesn't have. Sick as it may be, his treatment of Ellie is the only evidence that there might still be something human inside Billy; when the fact that what he's doing to her is bad is pointed out to him, Billy [[spoiler:lets her go, than goes to his [[SuicideByCop suicidal death]].]]
* ''Series/DoctorWho'':
** The new series has suggested that the Doctor needs his companions to be this for him. After he loses Rose and Donna initially decides not to go with him, she tells him to find someone because sometimes he "needs someone to stop [him]" from [[KnightTemplar going too far]].
** This doesn't really seem like an issue, given how heroic the Doctor acts, until you see how "[[AGodAmI The Time Lord Victorious]]" [[AntiHero behaves]] [[CharacterDevelopment without them]].
** As SFDebris noted, this was possibly apparent from his earliest appearance in the Classic Series, when the First Doctor was ready to bash an injured man's head in to save his own hide and only stopped by the intervention by the human he'd previously disparaged for being a ''primitive'' in comparison to himself.
** It's also worth noting that ''The Deadly Assassin'' veered into darker territory with the Fourth Doctor, which took place immediately after the departure of Sarah-Jane Smith and wherein the Doctor had no companion for the duration of the story.
* ''{{Firefly}}'': Not a single member of the crew is too tough to be concerned about [[TheCutie Kaylee]].
* ''Series/{{Glee}}'':
** Sue's [[spoiler:sister]], and Becky Jackson. It's kind played with with Becky, as Sue is about as abusive to Becky as she is to other students, which is kind of the point, a she has Down's Syndrome, and Sue treats her like any other girl her age, likely because of [[spoiler:her sister]]
** Beth, daughter of Quinn and Puck, though she's more Puck's morality pet.
** Brittany, for Santana, showing that the latter is actually capable of a deep interpersonal relationship.
** Rachel for Jesse. He's a dick to pretty much everyone except Rachel.
** A meta example - Ryan Murphy's other shows (''Nip/Tuck'', ''American Horror Story'') are intensely dark and disturbing. If you buy ''Glee'''s hopeful and optimistic message of inclusiveness as sincere, the show itself becomes this.
* ''Series/{{Heroes}}'':
** In the fourth episode of season 3, [[spoiler:a kid named Noah, who is apparently Sylar's son]] is the most distilled version of the Morality Pet ever seen for [[spoiler:future!Sylar. He claims to have curbed his "[[EvilTastesGood hunger]]" for him. When he dies, Sylar ''explodes''.]]
** This show has quite a few: Nikki has a son that she throws herself into the action for to protect. More significantly, HRG has a surrogate daughter which leads him toward a straighter path than if he didn't have a daughter.
** ''Heroes'' writers apparently believe Sylar is in desperate need of a Morality Pet. At the end of Season 4, [[spoiler:Peter arguably applies, when he and Sylar are trapped together in the episode, 'the Wall']], although it could be argued that [[spoiler:Peter wasn't the impetus for Sylar's change of heart; Sylar's reformation was already underway.]] Too bad, but I think I see some BadassDecay in Sylar's future.
** Whatever else Nathan Petrelli may be, you can't say he doesn't love his little brother.
* ''Series/{{House}}'' has Wilson. Most of the time.
** The writers tried to set up Cameron as one in the earlier seasons, but it didn't really take and she eventually turned into a self-righteous hypocrite who only ''thinks'' she's a Morality Pet.
* ''Series/{{Jericho}}'': In season 2, [[spoiler:Heather]] is a textbook example of that to Major Beck.
* ''Series/KamenRiderRyuki'': Takeshi saves a little girl and protects her from monsters in an apparent PetTheDog moment. [[spoiler:It turns into a KickTheDog when Asakura reveals that he cares nothing for her and was just using her as monster bait. Then ''back'' to a PetTheDog when he ends up waiting outside her hospital bedroom to see if she gets better, even after she has no more use to him]].
** In ''Series/KamenRiderDecade'', Natsumi and [[TheHeart Yuusuke]] act as [[AntiHero Tsukasa]]'s moral compass.
* ''{{Series/MASH}}'':
** Charles' little sister Honoria appears to be one to him. He is a complete pompous {{jerkass}} to everybody else but his love for her inspires him to [[spoiler: stick up for a soldier who stutters. Later, it is revealed Honoria stutters.]] The few times we see him addressing her via tape recording, he speaks in a much gentler, softer voice than to anybody else.
** B.J. is frequently this to [[UnsympatheticComedyProtagonist Hawkeye]] as well, in contrast to Trapper who was purely The Foil. This is somewhat subverted, however, in that 1) Hawkeye doesn't always listen to him and 2) B.J. can be in need of a restraint sometimes himself (such as when Hawkeye has to stop him from punching out a patient in "Rally 'Round the Flagg, Boys" or when he has an emotional breakdown in "Period of Adjustment.")
** Also subverted with Margaret and Frank in that, though Margaret is the only person (besides Frank's mother) he is shown to care about, he is just as terrible and nasty with her as he without, though possibly a little saner.
** Oddly averted with Radar. You'd think he ''would'' be one of these given his loveable farmboy-naif personality, but the various jerkass/antagonist characters (Frank, Charles, Col. Flagg) not only consistently treat him like crap but seem to make an express ''point'' of doing so. Even Margaret never quite warmed up to him like she eventually did with Hawkeye and co.
*** In some ways, Klinger became this in a way Radar never did, at least after his CharacterDevelopment. His naturally kind heart and dedication to his job (once he gave up [[ObfuscatingInsanity trying to get that Section 8]]) eventually won over both Margaret and Charles, who seemed to treat him something like VitriolicBestBuds afterwards.
* ''Series/{{NCIS}}'': Gibbs is all about business and tough love with almost everyone, except with Abby, whom he kisses on the cheek and gives hugs, massages and occasional roses, among other things. No, they're not screwing. It's a [[PapaWolf father]][=/=][[DaddysGirl daughter]] relationship. He also acts significantly warmer towards children (stated to be because "when they lie, they don't have the guile to get away with it") and his father.
* ''Series/OnceUponATime'': Henry is this for Regina/The Evil Queen. In season two, [[spoiler: Belle and his son, Baelfire/Neal]] is this for Gold/Rumplestiltskin. In season three, Henry also becomes this for [[spoiler: Rumplestiltskin.]]
* ''OrphanBlack'': Kira serves as this for Helena. It's implied she plays a similar role for her mother, Sarah.
* ''PowerRangers'': Several villains in have morality pets that show them capable of love and kindness and may even try (intentionally or not) to cause a HeelFaceTurn, but the only one who actually ''succeeded'' was Nadira from Series/PowerRangersTimeForce, daughter of the BigBad, Ransik. He showed during the series that he was willing to put his hatred aside for her happiness, and pulled a HeelFaceTurn entirely when she jumped into the line of fire after twigging onto the CycleOfRevenge.
* ''Series/{{Revolution}}'': Emma Bennett in the episode "[[Recap/RevolutionS1E15Home Home]]" acts as this to [[spoiler: Sebastian Monroe]] of all people. While she wasn't able to get him to stop trying to kill people, he did prove that there is a measure of humanity left in him and that he doesn't enjoy being a Big Bad guy. [[spoiler: Her death really got to him, and the fact that she had given birth to his son and sent him away some time ago eventually causes him to experience a Heel Realization]].
* ''Series/{{Rome}}'': Has Eirene, Titus Pullo's vulnerable, doe-eyed slave and later love interest, whom he rescued. Unfortunately, Pullo's a SociopathicHero (though played for drama more than comedy) and his idea of expressing love for her is a little...[[MurderTheHypotenuse warped]].
* ''{{Series/Salem}}'': Isaac for Mary.
* ''Series/{{Scrubs}}'':
** Dr. Cox and Jordan seem to have a morality pet in their son, Jack and their daughter, Jennifer Dylan. The main character, J.D. might also count as one.
** In a strange way, Dr. Cox is something of a Morality Pet for J.D. Rather than in the traditional sense, J.D.'s interactions with his mentor sometimes force him to really think about whether he's more interested in playing by the rules or saving lives, and which is the "right" choice when the two diverge.
** The Janitor has one in Elliot (or "Blonde Doctor" as he would call her) in the more traditional sense.
* ''Series/TheSecretCircle'':
** Melissa for Faye.
** Interestingly, Diana for Cassie.
** Also, Adam for Cassie. Adam prevents Cassie from going over the edge, especially in regards to her Dark Magic. Adam, along with Diana, is one of the few people who can actually get through to Cassie.
** Diana for Charles.
** Cassie for Jake.
** Melissa for Nick.
* ''Series/TheShadowLine'': Has Joseph Bede's Alzheimer's-afflicted wife. It makes it a lot easier to root for a wholesale cocaine dealer knowing that's he's only involved in OneLastJob to pay for her treatment.
* ''Series/{{Sherlock}}'':
** John Watson for Sherlock. Sherlock sees him as a friend; indeed, John is the '''only''' person Sherlock sees as a friend. John's presence humanizes Sherlock somewhat, forcing into question Sherlock's self-diagnosis of "high-functioning sociopath". [[spoiler:When John's life is threatened in 'The Great Game', solving what Moriarty is up to becomes second to making sure John is all right. Moriarty even refers to John as Sherlock's "little pet".]]
** Also, Mrs Hudson - Sherlock may not count her as a friend, per se, but he is openly affectionate with her in a way he never is with anyone who is not John.
** Molly Hooper has gradually morphed from Sherlock's personal ChewToy to another MoralityPet. She was the first person the typically remorseless Sherlock ever apologised to for his cutting deductions, and he's started being downright ''sweet'' to her since she [[spoiler: helped him fake his own death]].
* ''Series/{{Skins}}'': Effy was this for Tony, since his relationship with her was the only sign that he had any empathy at all during the first season. Although, Effy was much more than a Morality Pet and perfectly capable of carrying her own stories, so this example isn't one-dimensional as the trope description might suggest.
* ''Series/{{Smallville}}'':
** [[spoiler:Lana]] is this for SelfDemonstrating/LexLuthor in season four, when he is pretty much already evil... [[VillainWithGoodPublicity not that anyone knows that.]] [[spoiler:But judging by how he is imprisoning meteor freaks in ''Subterranean'', capturing and experimenting on Chloe as no more than a test subject, insisting he has nothing to due with [[ComicBook/TeenTitans Victor's]] mistreatment then immediately going to discuss having Victor's girlfriend kidnapped in order to force him to cooperate, [[MoralEventHorizon he's gone too far.]]]] Of course, this lasts until season six where, in order to make her marry him, [[spoiler:[[BabyTrap he drugs her with hormones to make her believe she's pregnant,]] [[KickTheMoralityPet then stops once it's done in order to make her think she had a miscarriage.]]]]
** For a while, Grant Gabriel[[spoiler:/Julian Luthor 3.0]], who Lex personally arranged to become editor of the Daily Planet, was regularly invited to his mansion so they could have a brotherly relationship. [[spoiler:Then, when Grant learns that he's really a clone of Lex's dead brother and tries to live his own life and going against Lex's plans, [[KickTheMoralityPet he has him killed in a supposed failed mugging.]]]]
** Prior to both, [[TheHero Clark]] served as one, and we all know how well that goes.
* ''Series/StargateSG1'': Daniel Jackson and to some extent the whole team for Jack O'Neill. Daniel, enthusiastic, morally upright, slightly gullible civilian, seems to bring out the nobler side of the grouchy, hardened, ex-black ops O'Neill, who can be pretty ruthless when left to his own devices. Though the stances were reversed on one occasion.
* ''Series/StarTrekDeepSpaceNine'': Tora Ziyal is this to her Cardassian father, Gul Dukat during seasons 4, 5, and 6. Though since Dukat [[spoiler:goes insane after she is killed and eventually becomes the Bajoran antichrist, this could also be a MoralityChain.]]
* ''Series/{{Supernatural}}'':
** Dean is this for Souless Sam in Season 6.
** Castiel acts as this for Meg in Seasons 7-8. This is the only time in which he shows affection for her; when Castiel is severely depressed after [[spoiler: absorbing Sam's mental illness]] in season 7, and while he is [[spoiler: being mind-controlled by the angel Naomi]] in season 8. Once Castiel is back to full power and recovering from his depression, this trope disappears, [[spoiler: mainly because Meg dies before she can interact with her Morality Pet once he's back to full power and no longer proper "pathetic" Morality Pet material]].
* ''TheVampireDiaries'':
** Gives evil vampire Klaus one in the form of Caroline.
** Elena is this for Damon. On occasions Stefan, and lately Jeremy fulfill this function but it's really all about Elena. Depending on the viewer's interpretation of Damon, Elena may in fact be his MoralityChain.
** Stefan also gradually represents this to Katherine after she's [[spoiler: turned human by The Cure and dying from old age]]. Her feelings for him inspire her to want to be a better person and earn forgiveness.
** Matt becomes this for Rebekah in season 4.
* ''Series/WizardsOfWaverlyPlace'': Arguably Harper and/or Justin, for Alex.
* ''Series/XenaWarriorPrincess'': Gabrielle plays this role for Xena.
* Deconstructed in ''Series/TheWire''. D'Angelo Barksdale seems to think it's too late for him to get out of the game, but starts to see a bit of himself in a younger and equally disaffected dealer, Wallace, who's traumatised by witnessing a recent and particularly brutal murder. D tries to help the kid get on the straight and narrow -- however, other members of the gang see Wallace drifting away and interpret it (accurately, as it happens) as a sign he's a snitch. [[spoiler:Wallace's murder drives a wedge between D'Angelo and Avon, and foreshadows his own murder when he too expresses a desire to put "the game" behind him.]]
[[/folder]]

[[folder:Multiple Media]]
* In ''Franchise/{{Noob}}'', the relationship between Gaea and Golgotha is closer to a perpetual LickedByTheDog situation. Gaea combines DirtyCoward, ManipulativeBastard and TheScrooge, yet she and Gologotha seem to have never stopped being ChildhoodFriends and Gologotha not only actively seeks her company, but has quite a [[BigBrotherInstinct Big Sister Instinct]] towards her.
[[/folder]]

[[folder:Professional Wrestling]]
* In Wrestling/{{WWE}}, long-running ForeignWrestlingHeel Wrestling/WilliamRegal was assigned by Eric Bischoff to baby-sit and team with his "special" nephew [[Wrestling/NickDinsmore Eugene]], a mentally-challenged man who was, despite his handicap, a capable wrestler. Regal quickly grew fond of Eugene, to the point where Wrestling/TripleH's cold, cynical manipulation of Eugene served as a catalyst for a rare HeelFaceTurn for Regal.
* [[Wrestling/JakeRoberts Jake "The Snake" Roberts]], had Damien, his favorite of the many snakes he owns. Jake was never shown as anything but kind to Damien. In 1991, [[Wrestling/JohnTenta Earthquake]] [[{{Kayfabe}} squashed]] Damien. The feud against Quake was Jake's last as a face (he shortly thereafter had a FaceHeelTurn when he interrupted [[Wrestling/RandySavage Randy "Macho Man" Savage]] and [[Characters/WWEDivas Elizabeth]]'s [[{{Kayfabe}} wedding]] at ''Wrestling/{{SummerSlam}} 91'', and sicced a cobra on him), and in a bit of FridgeBrilliance, one can look to Damien's squashing as his StartOfDarkness.
* X-Pac was briefly Wrestling/{{Kane}}'s morality pet in the late 90s.
* When Wrestling/{{WWE}} wants to put Wrestling/AlbertoDelRio through a HeelFaceTurn, their formula is simple- have a heel assault his loyal manservant, Ricardo Rodriguez, and have Del Rio make with the RoaringRampageOfRevenge against the jerk who did it.
[[/folder]]

[[folder:Radio]]
* In ''Radio/TheElysiumProject'', Shay acts as this towards Mirage after their time together at Highmore Academy.
[[/folder]]

[[folder:Religion]]
* Barnabas was this to Saul/Paul when the other disciples questioned Saul's HeelFaceTurn. See Acts 9.
[[/folder]]

[[folder:Tabletop Games]]
* Archangel Dominic in ''TabletopGame/InNomine'' is often depicted as an insane KnightTemplar. One person's rather popular {{fanon}} solution to this was to give him a [[http://www.sjgames.com/in-nomine/articles/New/netanya.html kitten]] to soften his image. This more or less worked for a large portion of the fandom.
* In ''MagicTheGathering'', Xantcha serves as Urza's anchor to morality and to sanity.
* Subverted in ''Children of the Night'', a supplement for ''TabletopGame/VampireTheMasquerade''. In it is a character profile of Velya the Vivisectionist, who [[MayflyDecemberRomance fell in love]] with a [[{{Squick}} 10-year old girl]] and made her into a vampire. The source of his infatuation with her was her blatant sociopathy, and willingness to manipulate her family into insanity and murder. [[FromBadToWorse But that's not the worst part]]. Even though she was as evil as they came, Elaine Cassidy wasn't mentally equipped to handle vampiric life beside one of the most cold and calculating inhumans in the world, and quickly went batshit insane. Velya's response to his "wife's" degeneration was to [[BodyHorror graft her body into his torso]] in order to keep her out of trouble until such time as he could find a cure.
[[/folder]]

[[folder:Theatre]]
* Archie, from ''Theatre/{{Thirteen}}'' is actually an aversion of this. Archie uses the fact that he is terminally ill to [[ManipulativeBastard manipulate everyone around him to get him what he wants]].
* The eponymous character in Verdi's opera ''Rigoletto'' will simply be a small-minded, vengeful court jester, if not for his daughter Gilda.
[[/folder]]

[[folder:Video Games]]
* VideoGame/DragonQuestIV Gives [[BigBad Psaro]] one in the form of Rose. Her influence is the only thing that keeps him from completely and utterly wiping out the human race. [[spoiler: The second she's killed, he loses his mind and initiates a transformation so that he can destroy all mankind in retaliation. In the remakes, one can bring Rose back to life with through a sidequest. Bringing her to the location of the final boss fight causes Psaro to regain his sanity, transform back, and join the party to exact revenge on TheDragon for planning her death.]]
* ''VideoGame/DragonQuestIX'' plays with this in Coffinwell: [[{{Hikikomori}} Doctor Phlegming]] is very antisocial, and his cheerful wife Catarrhina appears to be the only other person he cares about... yet he still neglects her in favor of his research. [[spoiler:In fact, it's actually her ''death'' that spurs him to change his ways for the better, effectively Inverting the usual trope.]]
* In the HGame ''IdolsGalore'', the protagonist would otherwise be a JerkAss at best, if it wasn't revealed that it's mostly a JerkassFacade (albeit to hide his very reluctant good qualities). In fact, if he gets the ending with his Morality Pet, its revealed he's actually a fairly decent and even noble person who was hiding under several layers of asshole because he didn't want his inner decency to show.
* In a city of twelve million people, there's only one person [[VideoGame/{{Prototype}} Alex Mercer]] gives a damn about: his sister, Dana. In fact, ultimately it turns out that [[spoiler: the Blacklight Virus cares more about her than the ''real'' Alex Mercer ever did.]]
** In the [[VideoGame/{{Prototype 2}} sequel]], when Alex has [[spoiler: [[RogueProtagonist gone completely bugfuck insane and is trying to destroy humanity]], he still seems to possess ''some'' affection for her; as when he catches her he doesn't kill her, despite her role in thwarting his plans (he previously quickly killed off Heller's other contact).]]
* Arguably, Melissa Woodward, in ''HotelDusk''. Main character Kyle Hyde normally looks, sounds, and acts like a washed-up FilmNoir detective, but his actions with Melissa (including acting as her nanny, getting her out of a locked room 20 minutes later, giving her a stuffed rabbit doll, and getting an entire Christmas tree out of storage because she was complaining she didn't get anything for Christmas) prompts Hyde to note that he acts like "a sap".
* The ''VideoGame/{{Crusader}}'' games don't really show how the Silencer reacts around his fellow Rebels, but the fact that he's apparently willing to stop by the bar and talk with them, or at least listen to them, makes for a nice contrast with his being a sociopathic killing machine.
* In ''VideoGame/BetrayalAtKrondor'', whenever the dark elf Gorath does something that shows off his softer side, it usually involves his plucky young human companion Owyn.
* Most Creator/BioWare games with romance plots give you [[VideoGame/NeverwinterNights Good]], [[Franchise/MassEffect Paragon]], [[VideoGame/JadeEmpire Open Palm]], or [[VideoGame/KnightsOfTheOldRepublic Light Side]] points for doing things that advance the romance. So, to play an evil character with a LoveInterest, you have to turn back from the Dark Side at least a little bit, making Aribeth, Aarin, Ashley, Kaidan, Liara, Dawn Star, Sky, Carth, Bastila, Ashara, Mako, Vette and all the others all count as Morality Pets for the player.
** This effect is noticeably absent in cases where the LoveInterest is at least somewhat evil; see the Closed Fist option with Silk Fox, the dark side option with Bastila, and [[FaceHeelTurn Evil!Aribeth]]. The Male Sith Warrior and a corrupted Jaesa is also a ''very'' twisted case of UnholyMatrimony, as is a female Inquisitor and the pirate captain Revel. It's also subverted with some of the Republic classes (especially the Jedi Knight, the male Jedi Consular, and the Republic Trooper), as romantic options can actually net you ''Dark Side'' points.
* [[{{Cloudcuckoolander}} Merrill]] in ''VideoGame/DragonAgeII'' serves as this for most of the cast; no matter how stoic, arrogant, or generally jerkish the character, everyone's got a soft spot for Merrill.
** Except for [[JerkassWoobie Anders]] and Fenris, and even then Anders shows more concern for her use of Blood Magic than actual hatred... Whilst Fenris tells her [[KickTheDog he wishes she died with her mentor]].
*** In fact, this is subverted rather nastily with Anders: [[spoiler: he continually insists Hawke's been a better friend that he deserves, and if romanced he says Hawke is the only thing keeping him sane. In Act 3, [[KickTheMoralityPet he uses that affection to manipulate Hawke into helping with the bomb that blows up the Chantry]], and outright says to Hawke's face that his 'mission' is more important that their friendship/romance.]] [[MemeticMutation Goddamn Anders]].
** It doesn't even ''have'' to be a RomanceSidequest. Some characters, like Merill (above), Areie, Deekin, Blizz, Wild Flower, Mission Vao, Bethany (or Carver) tend to bring out BigBrotherInstinct or MamaBear reactions instead. They're just as good at putting the brakes on a dark-side action because you'd rather be a good example.
* In the later missions of ''VideoGame/StarCraft'', Jim Raynor might be seen as the Morality Pet for Tassadar and the other Aiur-dwelling Protoss.
** Matt Horner serves as one for Raynor in the sequel, stopping him from getting [[ItsPersonal carried away.]]
* Subverted in ''VideoGame/BaldursGate II'': Irenicus ''tries'' to use his old lover as a Morality Pet, but since he's been exiled and stripped of emotional response (aside from thundering rages), every attempt he makes ends up being both misguided and just plain creepy.
** To wit: he ''clones'' her, but the clones are insane and/or desperate not to be controlled by him (he can't actually feel anything for them, after all); he kidnaps dryads in an attempt to kindle the fires of passion, but then treats them more like (implied) sex slaves; he ''strips out the soul of a godling'' in an attempt to replace his own. And through all that, when he ''finally'' gets the chance at redemption and love with his old lover, he's so far gone down his path that he opts instead to try to kill her.
* In most single-player video- or computer-game [=RPGs=], [=NPC=] party members aren't so much Morality Pet as they are MoralityCompass - good characters will approve of good actions and deride evil ones, and vice-versa - but the fact that, for example, the option remains for the PlayerCharacter's old friend from childhood to still be treated like a favorite sister even after they've taken down a kidnapping ring and set themselves up in its place probably makes many players feel warm and fuzzy inside.
* Averted in ''VideoGame/BlackAndWhite'': the player's pet is a representation of the player and acts according to the player's desires. (Well, most of the time.) Of course, the player's desires can include [[strike:eating]] pooping all over one's followers?
* Raphael from the ''SoulCalibur'' series would seem more like a villain instead of an anti-hero if it wasn't for his foster daughter, Amy, being the driving motivation behind his actions.
** Of course, these actions include trying to start a bloody civil war, and later trying to turn the entire world into vampires. This may be more an example of LoveMakesYouEvil.
* Volgin's care for [[DepravedBisexual his lover, Raikov]], in ''VideoGame/MetalGearSolid3''. It's pretty much his only redeeming feature. The End also has his own Morality Pet, his pet parrot. If you shoot it, he will make a lot of noise about it. And heaven help you if you eat it...
** Snake pours scorn on the very idea, and mocks Otacon for believing that liking dogs proves that Wolf is a good person.
* In ''[[VideoGame/FireEmblemElibe Fire Emblem: Sword of Flame]]'', Nino is Jaffar's Morality Pet, changing him from a soulless Angel of Death to someone with actual feelings.
** Lesser example, in [[VideoGame/FireEmblemTellius Path of Radiance]], the main character Ike is very much one for Soren, who has a tendency to be amoral and callous at the best of times. Played with in that ''Ike's'' the big, imposing one.
* In ''VideoGame/NoMoreHeroes'', Travis owns a kitten called Jeane that you can feed and play around with. This has no gameplay purpose except to show that Travis isn't such a bad guy.
** In the sequel, helping your (now) overweight cat get back into shape unlocks a special move.
* ''VideoGame/FinalFantasyVI'': Shadow's devotion to his dog Interceptor is one of the chief things that humanizes him, despite the fact that the dog is a rabid killing machine that, according to his owner, feeds on strangers.
** Although the "feeds on strangers" thing could be a lie. Oh, and Relm is this for Interceptor! (Although if you see all the dreams, then you know why, which also makes her one for Shadow!)
* Luca Blight from ''VideoGame/SuikodenII'' may be an AxCrazy OmnicidalManiac, but he really does care for his sister, Jillia.
** Which he then subverts by promising her that if it wasn't for the way she looks, he would have murdered her a long time ago for the hell of it.
* Kel'Thuzad, TheDragon to [[VideoGame/WorldOfWarcraft The Lich King]] has a little kitten within his BossRoom named [[Film/AustinPowers Mr. Bigglesworth]]. If players kill it, he'll let out a BigNo while swearing that his armies of undead will hunt you down. Officially, it's the last of his humanity. So it really ''is'' the closest thing he has to not being pure evil.
* ''VideoGame/FinalFantasyVII'''s Barret Wallace has a daughter named Marlene to remind the audience that there's a soft heart beneath his [[PerpetualFrowner perpetually angry]] exterior.
** In the sequel spinoff, ''VideoGame/DirgeOfCerberus'', Vincent Valentine has both Yuffie Kisagari and Shelke.
** While in ''AdventChildren'', Cloud gets [[TheWoobie Denzel]] and Marlene.
** Cloud ''himself'' is a Morality Pet for the majority of the cast, [[spoiler: since he's gone through so much and keeps the cast going even when things seem hopeless.]]
* In ''VideoGame/{{Gungrave}}'', player character Grave's young protectee Mika is one the few things that keeps him from being a completely mindless killer, as she is a memento of the people he held near and dear when he was still Brandon Heat. She is something he can "live" for, the one good thing left in his "life".
* In ''VideoGame/QuestForGloryIV: Shadows of Darkness'' [[spoiler:Tanya fills this role towards Katrina, who wants to resurrect the local EldritchAbomination. Boy, do you feel like a jerk when do the right thing by returning Tanya to her rightful parents. Fortunately for you, by the time this happens in the game, ''you've'' become Katrina's new morality pet, even though she doesn't realize it until [[HeroicSacrifice it's too late.]]]]
* ''HarvestMoon DS'' has Daryl, the creepy MadScientist living in the southern part of the valley. In previous games, he was known for wanting to experiment on your cows and accusingly discussed the effects of methane produced by cows on global warming. In this game, he [[StalkerWithACrush stalks]] archaeologist [[{{Meganeko}} Flora]]. However, if you decide that you actually ''want'' to befriend him... You discover that he rescued an injured [[OurMermaidsAreDifferent mermaid]] girl named Leia after she washed up on the beach, and has been diligently caring for her ever since. She's so grateful to him, she helps him cook, and despite her being an anomaly of science, he [[TheyWouldCutYouUp never once experiments on her.]] In fact, when she's all better, he sets her free into the ocean, and she's forever grateful.
* The Magypsies in ''VideoGame/{{Mother 3}}'' all have pets to show their caring side, but Locria's pet mouse is the best example, being the only hint that he wasn't totally evil.
* Fanon likes to make [[VisualNovel/AceAttorney Adrian Andrews]] into a Morality Pet for Franziska Von Karma. In the actual games, she does latch onto Von Karma because of her dependency issues, but the main reason Von Karma is any nicer to Andrews than she is to anyone else is that at this point in continuity, she's still dedicated to her win records and knows that this is the best way to get Andrews to work with her in court. Later on, when Von Karma is less of a royal bitch and doesn't need a Morality Pet so much, Andrews is learning to stand on her own, without the aid of the strong mentor figures she relied on.
** To some extent [[spoiler: Trucy]] acts as a sort of Morality Pet for [[spoiler: Phoenix]] after he is [[spoiler: disbarred]], ''and'' as we see that he becomes totally BadAss after being [[spoiler: disbarred]], if he hadn't had a Morality Pet...
** [[spoiler: Mia]] and later [[spoiler: Maya]] as a Morality Pet for [[spoiler: Godot]]. It's his prime motivation for why [[spoiler: he killed Elise Deauxnim, who had the spirit of Dahlia Hawthorne inhabiting her body.]] [[spoiler: Maya even tries to take the heat for him.]]
* In ''VideoGame/PokemonColosseum'', ex-Team Snagem member Wes (also the main character) has Rui. He actually decided to flatten the first evil gang in the game before meeting her, having apparently decided that he just didn't like them anymore, but didn't decide to actually help save Orre until she showed up.
** In ''VideoGame/PokemonRubyAndSapphire'' and ''[[VideoGame/PokemonDiamondAndPearl Diamond and Pearl]]'' there is a subtle example. The criminal leaders of Team Aqua, Team Magma, and Team Galactic (Archie, Maxie, and Cyrus respectively) had a Golbat the first time you fight them. In the later encounters, they have a ''Crobat'', a Pokemon which evolves from a Golbat that has reached maximum happiness with its trainer.
*** Cyrus raising a Crobat is pretty much the ''exact opposite'' of his StrawNihilist philosophies, emphasizing its Morality Pet status due to the hypocrisy.
** Another noted Trainer of a Crobat is Silver in ''VideoGame/PokemonGoldAndSilver'' and the remakes, where it represents his CharacterDevelopment from a power-hungry JerkAss to a JerkWithAHeartOfGold.
** Wes also has an Espeon and Umbreon at the very beginning of the game, both of whom evolve through happiness like Crobat.
* Even Kratos of ''VideoGame/GodOfWar'' has one in his daughter Calliope. While for the most part a SociopathicHero, invoking his PapaWolf nature can lead him into acts of heroism and selflessness, as seen in Chains of Olympus, where [[spoiler:he gives up the chance to remain with his beloved daughter in the Elysium Fields in order to save her and the world, including a [[PlayerPunch button-mashing sequence]] where [[PleaseDontLeaveMe he must push her away]]]].
** In the third game, he gains another one in the form of [[spoiler:Pandora]].
* One of the more shocking twists in ''VideoGame/GhostTrick'' is that BigBad [[spoiler: Yomiel]] had one of these...and it's [[spoiler: the main character. Sissel's GhostAmnesia made him forget that he was a stray cat who became Yomiel's sole companion during ten years of undead isolation from humanity.]]
* ''{{Theresia}}'' subverts this. [[TortureTechnician Emile]] killed Leanne's mother when the latter was an infant, but kept her alive and raised her in an attempt to understand [[WhatIsThisThingYouCallLove the concept of love]]. Seeming more obsessed than truly maternal, she kept the child isolated from all other people, and sometimes kept her in chains. She never showed any love or affection towards her, but Leanne loved her anyway and considered her a mother figure, [[NightmareFetishist growing to love the smell of blood and the sound of screaming as reminders of her]]. Ultimately, [[spoiler:Emile protects Leanne from the other soldiers, but tries to kill her herself rather than let her escape to the outside world]].
* Taro acts as one to Rozalin in ''VideoGame/{{Disgaea 2|CursedMemories}}'', and Etna's a lot nicer to Hanako than she is to the rest of the party.
** Raspberyl to Mao in the third game. Becomes a MoralityChain in the bad ending.
** Flonne to both Laharl and Enta (again) in the 1st game.
* Amy Rose from SonicTheHedgehog towards E-102 Gamma, Silver, and to a lesser extent Shadow (heavy influence on his HeelFaceTurn due to reminding him of Maria).
* In CityOfHeroes, Ghost Widow has Wretch.
* VideoGame/{{Portal 2}} gives us Cave Johnson, the [[PointyHairedBoss CEO of Aperture Science]] and his assistant Caroline. Cave may have been hilariously insane and disregarding of his employees' safeties, but he had lots of respect for his assistant, who were one of the few people who could restrain him when he lost his temper. While he eventually [[spoiler:forced her to be uploaded unto GLaDOS later on against her will]], it is still obvious he still has some ounce of respect for her, in that [[spoiler:he does it not out of maliciousness, but due to wanting her to run the facility after his death due to his high regards of her]].
* Valve pulls this again in VideoGame/TeamFortress2, giving The Medic a group of doves as pets in his "Meet The Medic" short. His favorite, Archimedes, appears to be just as morbid as he is, however… when things explode, he leans in to watch, often getting covered in blood, and he has a disturbing habit of nesting in patients' open chest cavities.
* From the BanjoKazooie games, Banjo is this for the otherwise GoodIsNotNice DeadpanSnarker Kazooie.
* In the ''[[Franchise/TheElderScrolls Elder Scrolls]]'' games, Clavicus Vile is a demon prince who enjoys [[DealWithTheDevil bargaining with mortals,]] [[LiteralGenie and satisfying his end of the bargain in ways that the mortals regret]]. He's sometimes accompanied by a dog called Barbas, who is implied to be his 'better half', a supernatural manifestation of his conscience.
** In ''Skyrim,'' there's a sketchy, highly unpopular wizard by the name of Falion in Morthal. He's kind of abrasive, sells black soul gems, and is involved in secret research most likely related to necromancy. The entire town (minus his own sister and the already-crazy Jarl) knows he's up to something. However, he has also taken in a young orphan girl and is motivated by a desire to keep her safe. In turn, she adores him.
* In VideoGame/WorldOfWarcraft, Anduin Wrynn is this to his father, Varian Wrynn.
* In ''VideoGame/BreathOfFireIV'', CountryMouse Mami is at least this to Fou-Lu, and possibly much more. [[spoiler:In turn, it becomes a KickTheDog moment for the Empire, when they use Mami as the "ammo" in a cannon that runs on emotions. Fou-Lu, who had started becoming an extremely sympathetic character, [[RoaringRampageOfRevenge doesn't take it well.]] [[WoobieDestroyerOfWorlds Not well at all.]] ]]
* In ''VideoGame/BlazBlue'', [[LadyOfWar Tsubaki Yayoi]] is the Morality Pet of both Jin Kisaragi and Haku-men. The former is an AxCrazy {{Yandere}} {{Jerkass}} with [[AnIcePerson ice powers]], and the latter is a vaguely [[KnightTemplar Knight Templar-ish]] HeroAntagonist who ''exemplifies'' GoodIsNotNice. However, both of them are extremely warm and friendly to her, and woe betide the man who [[BerserkButton harms her in any way]], for ''[[ImplacableMan they will hunt him down]]''.
** Although non-romantic and to a much lesser extent, [[LittleBitBeastly part-squirrel]] PluckyGirl Makoto is also one for Jin. Jin [[TallDarkAndSnarky snarks]] at her a lot, but he cares about her well-being, and saves her life when [[BigBad Hazama]] attempts to kill her.
* In StreetFighter, BadassGrandpa Gen is one of the most merciless and skilled assassins in the world. However, there is one person whom he shows a somewhat softer side to: Chun Li, the daughter of an old friend of his's, as well as his favorite disciple. Further expanded in the UDON Comics, where one of the reasons why Gen stops being a hitman is having been forced to kill an opponent in front of a very young Chun-Li.
** Sometimes, Sakura Kasugano is this to Ryu. The biggest example is in ''Alpha 3'': [[spoiler: after Sakura attempts a GoThroughMe to protect a knocked-out Ryu from Bison and he just swats her away, Ryu temporarily goes berserk and tears Bison a new one. And this is ''after'' Ryu had been BrainwashedAndCrazy.]]
*** She does it again (via CooldownHug) in ''Ties That Bind'' when Ryu [[spoiler: loses himself to the Satsui no Hadou after Cammy is brutalized by C. Viper.]] It takes a crying, pleading Sakura to calm him back into sanity.
* [[CheerfulChild Sweet, kindly Applebloom]] plays this for [[TheMagnificent THE GREAT AND POWERFUL TRIXIE]] in VideoGame/PonyFantasyVI''
* When the CreepyTwins Hsien-ko and Mei-Ling from ''VideoGame/{{Darkstalkers}}'' became [[ChineseVampire Jiangshi]], Hsien-ko was transformed into the body while Mei-Ling turned into the soul placed inside the warding talisman on her NiceHat. If the hat ever was taken away and thus the twins were separated, a Hsien-ko without Mei-Ling's calming influence [[FaceHeelTurn would turn straight-up evil.]]
* While Fenrich in ''VideoGame/Disgaea4APromiseUnforgotten'' may be a conniving ManipulativeBastard willing to exploit foes and allies alike, he has nothing but UndyingLoyalty towards Valvatorez, and all the care he shows towards him is entirely genuine.
* Clementine serves as this for Lee Everett in ''VideoGame/TheWalkingDead.'' [[http://www.gameinformer.com/b/features/archive/2012/12/26/creating-clementine.aspx And this goes for the players, too.]]
* In the ''WhatDidIDoToDeserveThisMyLord'' series, Badmella, Badman's teenage daughter, is this for Badman. Both of the first two games include a mission where Badmella is deathly sick and Badman demands a remedy made of [[BlobMonster Slimmando Mosses]] in order to cure her, with his usual talkative and flippant demeanour gone in favour of frankness and desperation.
* Roman Bellic is this for his cousin Niko in ''VideoGame/GrandTheftAutoIV''.
* ''Videogame/BioShockInfinite'': Elizabeth is this to Booker in a fashion.
* ''VideoGame/TheLastOfUs'' - Though not exactly inspiring Joel to greater heights of moral fibre, Ellie does give him a reason to live for, rather than simply survive.
* ''VideoGame/BeyondTwoSouls'': The protagonist, Jodie, acts as one for [[{{Poltergeist}} Aiden]]. When she was a little girl, the entity actually did many nice things for Jodie, including entertaining her with shadow puppets and fetching her a cookie from that out-of-reach cookie jar. Aiden also [[GuardianEntity protects her using its powers]]. Unfortunately, the entity isn't so hospitable to other people. Usually, they never go beyond [[{{Jerkass}} dickish]] [[{{Troll}} but otherwise harmless pranks]], but if you harm or threaten Jodie, he can [[AxCrazy turn extremely nasty]]. Case in point: [[spoiler:after Jodie is mistreated rather horribly by the attendants at a birthday party, Aiden locks them in a room and the retribution he can potentially reap onto them can include smashing windows in their faces as they frantically try to escape, throwing furniture at them, stabbing one of them with a kitchen knife, and even trying to burn the entire room. The bullies ''[[AssholeVictim did]]'' [[LaserGuidedKarma partly have it coming]], but even then, this is a [[DisproportionateRetribution horrifically disproportionate response]]]].
* Nanako Dojima in ''VideoGame/{{Persona 4}}'', to the point where [[spoiler:when she apparently dies in the hospital after having been kidnapped a month prior, the Investigation Team can [[HoistByHisOwnPetard push the one responsible into the TV World]], but [[PlayerPunch this "rewards" the player with]] [[MultipleEndings the worst ending]], where she's [[TearJerker gone for good]].]]
[[/folder]]

[[folder:Visual Novels]]
* Tsugumi of ''{{Ever17}}'' was probably coming off a little too strong on the {{jerkass}} and a little weak on the BrokenBird. Plus they needed a way to suddenly make her get along better with Takeshi, so they introduced Chami the Djungarian Hamster. He's named Chami because he's charming.
* Not that Dr. Irie from HigurashiNoNakuKoroNi was a villain, but Satako Houjou was an influence in changing some of his priorities.
* Maria from UminekoNoNakuKoroNi acts as the pet for Beatrice.
* HGame ''Gibo - Stepmother's Sin'' has the main charactter, Yusuke, doing pretty much everything he can to get into his stepmother's pants. However, he also has a stepsister, Shiina. In order to get the better endings (here defined as ones where you don't turn into a total bastard), you need to treat Shiina well, making her into one of these. Even when he's being a dick, Yusuke still refers to Shiina in kind terms.
[[/folder]]

[[folder:Web Comics]]
* Built in to troll psychology/romance on a fundamental level in ''Webcomic/{{Homestuck}}''. MOIRALLEGIANCE pairs are basically this trope, where a calmer troll keeps a more hot-tempered or violent troll's dangerous tendencies in check and they balance and complement each other's personalities. Three examples exist at the beginning of the troll arc: Kanaya for Vriska, Feferi for Eridan, and Nepeta for Equius. Subverted in that Vriska is still a [[MemeticMutation HUGE BITCH BLUH BLUH]] even with Kanaya's [[InsistentTerminology help]], since Kanaya has less-platonic feelings for Vriska and therefore fails to exercise any real control over her, and Feferi broke up with Eridan early on because of the emotional toll of keeping him constantly in check. Nepeta plays it straight except for the fact that on closer examination Equius might not have been that bad a person without her anyways. (He says he might have been.)
** The Equius <> Nepeta dynamic is also interesting as Equius believes that he is the one protecting Nepeta; later on, he admits conversely that, without Nepeta's support, he believes he would probably be violently unstable.
** [[TheHero John]] became one for Vriska.
** Kanaya also finds herself accidentally slipping into this role for Rose, but when Rose mentions it she tries to backpedal because she doesn't want a repeat of her relationship with Vriska.
** As of late, Feferi dumping Eridan has had [[MoralEventHorizon bad consequences]] for the team. On the flipside, Karkat became one of these for the [[AxCrazy psychotic]] [[MonsterClown Gamzee]], successfully ending his murder spree without any further bloodshed.
** Draconion Dignitary ''tries'' to be this to Jack Noir [[spoiler: after he's prototyped with Becquerel and becomes [[OmnicidalManiac crazy]] but fails since Jack's too far gone.]] Interestingly played with in that DD ''isn't'' a nice guy like this trope usually requires; he's just in favor of PragmaticVillainy and thinks that Jack is going to ruin everything with his behavior (though there ''may'' be some EvenEvilHasStandards going on as well). Also subverted with Courtyard Droll who has a lot of traits in common with this trope but is to weak and easily manipulated to be an effective Morality Pet for Jack, and is hated by him anyways.
* Subverted in ''{{Furmentation}}'' - Alexi goes into a violent, psychopathic rage when his teddy bear is stolen, but having it doesn't seem to make him any nicer than usual.
* Criminy to Fuchsia in ''{{Sinfest}}''.
* While he's antisocial rather than villainous, [[SomethingPositive Davan Macintire]] and his relationship with Rory fit this trope. He's still grouchy and sarcastic around Rory, but he seems to give more of a damn about the kid than he does about most people even upon learning that [[spoiler: Rory isn't actually his son]].
* The AxCrazy Red of ''Webcomic/NoRestForTheWicked'' takes this attitude toward November.
* Mr. Scruffy in ''Webcomic/TheOrderOfTheStick'', who is probably the only living thing Belkar genuinely likes and cares for besides himself. Mr. Scruffy doesn't seem to make a dent in Belkar's morality (or lack thereof) otherwise, though. In fact, Belkar seems to like Mr. Scruffy largely because the cat appears to be as much a vicious little bastard as Belkar himself (though he partially does it in honour of Shojo).
** On the other hand, Belkar interprets such things as eating meat and batting at a piece of string as "vicious." ("Kick that string's ass.") He's inclined to see normal cat behavior as vicious and bloodthirsty; perhaps an unreliable interpretation of the cat's character.
** That said, Mr. Scruffy also actively took part in Belkar's fight with the Thief's Guild, and a recent strip has him bat a bowl of maggots on a bunch of people to apparently escalate a bar fight...
** Mr. Scruffy plays the role a little bit straighter [[http://www.giantitp.com/comics/oots0807.html here]]. Belkar even comments on that.
--> '''Belkar:''' Stupid cat. A ranger is supposed to influence an animal's behavior. You're doing it '''backwards'''.
** {{Discussed}} [[http://www.giantitp.com/comics/oots0781.html here]]:
-->'''[[SpoonyBard Elan]]:''' I can't tell if the cat is a good influence on Belkar, or Belkar is a bad influence on the cat.
-->'''Hayley:''' Both, I think, but it probably still averages out somewhere south of Neutral.
** Played much straighter with Blackwing to Vaarsuvius in the most recent arc. Vaarsuvius isn't so much ''evil'' as (possibly) TrueNeutral, but [[AmbiguousGender sie]] has [[BerserkButton anger problems]].
* While technically human, Piffany from ''{{Nodwick}}'' is the only reason Artax and Yeager actually display any kind of heroism ever. There's a reason ''A World Without Piffany'' is so [[CrapsackWorld crapsacky]] it makes even the normal ''Nodwick'' world seem pleasant.
* ''ComicBook/{{Buck Godot|Zap Gun for Hire}}'' has the Beemahs become this for the Klegdixal, starting in [[http://www.airshipentertainment.com/buckcomic.php?date=20090214 this]] comic.
** Prior to, and unbeknownst to anyone else, the Beemahs were sort of the Morality Pet the Klegs wished they had-the meeting between the Beemah and the Kleg ambassador is kind of a [[SugarWiki/HeartwarmingMoments Crowning Moment Of Heartwarming]], as the usually rude and self-serving Klegdixal pours his heart out with gratitude to Buck for reuniting the two species, as the Klegs had apparently been the original creators of the Beemahs and their one selfless urge as a species was to fix all the things that had gone wrong in the process (many of them flaws which are used to exploit the Beemahs by another party).
* Richard from ''LookingForGroup'' may be a cold blooded (literally, he's undead), ChaoticEvil, OmnicidalManiac, but no one messes with his [[FanNickname Felbunny]].
* Teeko from ''{{Chirault}}'' has proved that Kiran is not as much of a stoic loner as he thinks he is.
* In ''Webcomic/ElGoonishShive'' Lord Tedd tried to wipe out [[AlternateUniverse his alternates]] and sometimes [[http://www.egscomics.com/?date=2003-01-06 looks batshit insane]]. Then we see him looking much like Tedd we know, not just sane, but [[http://www.egscomics.com/?date=2003-11-07 downright nice and caring]] as far as his "[[SubordinateExcuse voluntary servant]]" Nioi is concerned. In turn, [[http://www.egscomics.com/?date=2004-05-17 she claims]] he's not a bad guy.
** Another side of it approaches MoralityChain, as all known AlternateUniverse variants of Tedd got a good friend Elliot and at least once the female counterpart Ellen is his girlfriend; the only exclusion is Lord Tedd's world -- and instead of Grace there's a big ill-mannered BloodKnight.
* Played with early in ''Webcomic/SluggyFreelance'', when Kiki the ferret's regular CatchPhrase was "Stay good, Riff! Stay good!" Otherwise averted; Torg's [[KillerRabbit Immorality Pet]] doesn't seem to have changed him, and Bun-Bun's AlternateReality Good Version didn't stop Torg from sliding into embittered self-interest in the Dimension of Lame.
* Creator/JonStewart seems to be this for a vampire Creator/StephenColbert in ''[[Webcomic/AndShineHeavenNow The Eagle of Hermes]]''.
* {{Subverted}}, or even {{averted}}, for [[OmnicidalManiac Black Mage]] of ''Webcomic/EightBitTheater''. Though he has an humongous crush on [[HotWitch White Mage]], her presence isn't enough to prevent him from being evil. At most, he tries to be evil without her noticing.
* In ''[[Webcomic/AccursedDragon Accursed Dragon!]]'', [[AntiVillain Wizard]] has Humpbrett, a strangely pet-like boy who has been referred to as a "stray" Wizard picked up.
[[/folder]]

[[folder:Web Original]]
* Danya, ''SurvivalOfTheFittest's'' BigBad, is occasionally revealed to take time off from his commitments running the Act (including making the announcements) and going home to see his family. The obvious love and affection he has for his wife, young daughter and grown-up son serve to humanise him somewhat. Most members, however, still loathe him.
** They also fully ''support'' his activities, giving him even more motivation to act like a monster.
* At no point in his rampages has Machinima/ChristianBrutalSniper ever killed the RED Spy.
* [[OurDemonsAreDifferent Spiro]] of the Fellowship of ''TheQuestportChronicles'' pulls a HeelFaceTurn and is banished from the demon homeland after refusing to kill a [[FluffyTheTerrible Demon Bunny]].
* Penny and Moist in {{Dr. Horrible's Sing-Along Blog}} definitely acts as morality pets.
* The SCPFoundation has SCP-085, who acts as this for ''the entire foundation''.
** SCP-053 acts as one for SCP-682 as she is the only being that 682 hasn't killed and actually ''protected'' her from the personnel who went in to separate them.
[[/folder]]

[[folder:Western Animation]]
* In ''WesternAnimation/{{Gargoyles}}'' MagnificentBastard David Xanatos has a infant son named Alex in the second season. The Gargoyles helping protect the baby from his god-like grandparents (long story) encourages Xanatos to [[HeelFaceTurn rethink his priorities]].
** Also, to some extent, his then-fiancee Fox, when she temporarily becomes a werewolf.
** Demona's daughter Angela. On any other occasion, Demona is still her usual self.
* In the ''[[WesternAnimation/HeManAndTheMastersOfTheUniverse1983 He-Man]] and [[WesternAnimation/SheRaPrincessOfPower She-Ra]] Christmas Special'', CardCarryingVillain Skeletor is chagrined to find himself looking after two Earth kids and their pet who wound up stuck on Eternia.
* In ''WesternAnimation/Ben10AlienForce'', the main reason Kevin decides to do anything good is because he has developed a crush on Gwen.
** There's also Cash and JT: at the end of the episode, JT talks Cash out of letting the robot hand take over his body and fighting with Ben.
* In the ''WesternAnimation/SamuraiJack'' episode "Tale of X9", the robot hitman X9, the only one of his model with free will and a processor about him, abandons his job after finding an adorable abandoned puppy, Lulu. As far as he was concerned, all he needed was her... which is why he was forced back to work when Aku kidnapped her. In a bit of a TearJerker, [[spoiler: Jack cuts him down like any inconsequential enemy. X9 asks him to take care of Lulu, then dies]].
* On ''WesternAnimation/TotalDrama,'' [[TroubledButCute Duncan]] is a {{Jerkass}} to other characters most of the time, but finds his Morality Pet in [[PerkyGoth Gwen]] and it's stayed that way for three seasons straight. He also is pretty good friends with Owen.
** Subverted with Courtney. It started out playing this trope straight but Courtney's derailment and Duncan cheating on her, and being more of a jerk to her than anybody else changed all that.
* Subverted in the ''WesternAnimation/JusticeLeague'' episode featuring the Justice Lords. Flash is pretty sure that the MirrorUniverse Superman (who's gone totalitarian nuts) won't be able to kill him because of what the Flash [[TheHeart represented to that group]]. Reverse!Superman is quite prepared to heat-vision his brains out. His own universe's Superman admits that he knew even Flash wouldn't be able to talk Reverse!Superman out of it.
-->'''Flash''': Can't do it, can you? I'm the last bit of your conscience. This is the one thing you'll never do.
-->'''Superman''': I've done a lot of things I thought I'd never do these part two years. One more won't hurt.
* The eponymous character of ''WesternAnimation/JimmyTwoShoes'' is this to [[EnfantTerrible Heloise]] since she's in love with him, but not even he's safe from her anger and wrath.
* Without Jane Lane, the titular character of ''WesternAnimation/{{Daria}}'' would be, well, unpleasant to be around.
** Also, as seen in the episode where Jane joins the Track team. Daria begins to obviously go mad, voicing her ENTIRE internal monologue.
* ''WesternAnimation/TheRenAndStimpyShow'': It's hinted that Stimpy is this to Ren.
* ''WesternAnimation/PhineasAndFerb'''s [[MadScientist Dr. Doofenshmirtz]] is more of a PunchClockVillain on his evilest of days, but still has a clear Morality Pet in his [[MadScientistsBeautifulDaughter beautiful daughter]] [[DeadpanSnarker Vanessa]]. It actually goes both ways; she clearly disdains him early on, [[DefrostingIceQueen but warms up to him]] as the series goes on.
** In a recent episode, it is revealed that Perry and Vanessa are the only things that are keeping Dr. Doofenshmirtz from becoming a complete monster
* [[TheHeart Noodle]] is the Morality Pet to [[Music/{{Gorillaz}} her band]], most prominently [[JerkAss Murdoc]].
* ''WesternAnimation/{{Doug}}'': [[RightHandCat Stinky]] for [[TheBully Roger]].
* [[WesternAnimation/{{Futurama}} "All those times I said, 'Kill all humans', I'd always whisper "Except one." Fry was that one, and I never told him so!"]]
* In the comic book series of ''ComicBook/TheSimpsons'', Jamshed is this to Apu, especially in the issue, "Little Big Mart".
** It happens to the TV show as well, whenever Bart and/or Homer did something too far, they'll know when their actions upsets Marge.
* ''WesternAnimation/AdventureTime'' with Gunther being the pet for Ice King. Sometimes.
** A straighter example for Ice King is Marceline the Vampire Queen, who he was a ParentalSubstitute towards hundreds of years ago. While he's since gone completely insane, he still cares about her and she's noticeably the one person he actually ''cared'' when he believed he'd hurt her.
** The Lemon Children seem to be this to the Lemongrabs. Normally the earls are rather rude and unpleasant, but they sincerely love their own children- perhaps even more than Princess Bubblegum loves ''them.''
* Taken to a dark degree with ''WesternAnimation/YoungJustice'': in the episode "Secrets," Harm [[spoiler: killed his younger sister ''because'' she was the only person he cared about.]]
* Harry to Norman Osborn in the ''WesternAnimation/UltimateSpiderMan'' animated series. Unlike other adaptations, Norman Osborn does seem to care for his son and he shows genuine concern when he hears the Frightful Four are attacking his son's school. He's is still strict with Harry though.
* ''WesternAnimation/BeastWars'', Rampage is a cannibalistic serial killer, akin to Hannibal Lecter as a transforming robot armed with mountain-busting weapons. He openly despises both sides of the conflict and would happily eat them all if he wasn't kept on a short leash by Megatron. However, he finds Transmutate, a horribly disfigured and mentally regressed Cybertronian whom the others view as a useless or even a liability, but as a freak like himself, he sees as a kindred spirit. When Transmutate dies, he actually mourns. As in "collapse onto the ground while weeping loudly" kind of mourn.
* ''WesternAnimation/MoralOrel'': Orel Puppington is this for his grandfather Arthur and possibly for Stephanie.
* WesternAnimation/DarkwingDuck has his adopted daughter Gosalyn, who is probably the person D.W. loves the most other than [[SmallNameBigEgo himself]].
* In ''WesternAnimation/MyLittlePonyFriendshipIsMagic'', Fluttershy ends up becoming this for ''Discord'' of all beings. She's the first being who he's ever developed a friendship with, and when he realized [[KickTheMoralityPet he'd hurt her to the point she almost broke that friendship]], it actually causes him to perform a HeelFaceTurn. [[spoiler:In the Season 4 Premiere when Discord learns the ponies have lost the elements and have ''no way'' of stopping him should he decide to [[FaceHeelTurn go back to his old ways]], he still remains good for Fluttershy's sake.]]
* ''WesternAnimation/FostersHomeForImaginaryFriends'': Mr. Herriman has Madame Foster, his creator, he's normally no nonsense and uptight with pretty much everyone else in the house, including her granddaughter Frankie, but he truly loves Madame Foster (especially when you consider she never abandoned him after she grew up). He's even willing to perform the incredibly embarrassing "Funny Bunny" song for her.
* In ''WesternAnimation/GarfieldAndFriends'', in the U.S.Acres segment, in the later seasons, Roy Rooster has two Morality Pets. The first one his little niece, Chloe,[[spoiler: he ditched his date to save her from the weasel and spent the rest of the night with her instead.]] The second one is [[FriendshipMoment Wade Duck]] sometimes. Altough he pranks him and they argue sometimes, Roy had moments of [[DeclarationOfProtection protective instincts towards Wade]]. In the "Snow Wade" two parter,[[spoiler: Roy was the only character to show any concern for Wade's well being, when he didn't seem to wake up from the kiss.]]
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