History MoralityPet / AnimeAndManga

** For a short while, Erika was this to [[EvilPrince Richter]]. Though he disagrees with her philosophy and was enraged when she departed from the Undersea Castle, he was happy when she returned and tried to make her feel better. Even after she betrays him for Earth, he feels conflicted about punishing her because she's his sister, before deciding that capital punishment is what she deserves.
-->'''Richter, after having a flashback of him and Erika's childhood:''' ''"Erika....why did you betray me?"''
** [[spoiler: However, after Erika escapes execution, he's hell-bent on finishing her, subverting this trope]].

** Kazuya becomes [[spoiler: Balbas' in episode 35. Though the Baamite general starts off as abrasive and confrontational, he is touched by the boy's [[AllLovingHero unflinching kindness]], though he tries to suppress it. After Kazuya is attacked by Georiya's goons, Balbas takes off his own bandage and places it on Kazuya's injury to nurse it.]]
* ''Anime/{{Daltanious}}'':
** Danji's is Sanae. She is the chain that holds him back from letting his wrath consume him and harm others, and it is implied he has feelings for her.
** The cold hearted Dr. Namil is in both ends of this. He's an emotionless EvilGenius and had no issue helping Dolmen rise to power. However, he never forgave himself for what he did to Kloppen, and confessed to his crimes against the boy at the price of his own death. Kloppen, who up to this point was portrayed as a gleeful massacre-happy ConqueringAlienPrince visibly shivers at Dolmen's order of shooting Namil, and repeatedly asks himself why of, all people, it had to be him.

** 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.]]

* [[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.

* ''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.]]

* ''Anime/{{Daltanious}}'': The cold hearted Dr. Namil is in both ends of this. He's an emotionless EvilGenius and had no issue helping Dolmen rise to power. However, he never forgave himself for what he did to Kloppen, and confessed to his crimes against the boy at the price of his own death. Kloppen, who up to this point was portrayed as a gleeful massacre-happy ConqueringAlienPrince visibly shivers at Dolmen's order of shooting Namil, and repeatedly asks himself why of, all people, it had to be him.