Quislings seen in Anime and Manga.
- Buso Renkin has "familiars", humans who serve the hommunculi and will mark themselves with the same insignia to avoid being eaten by them.
- Suzaku Kururugi in Code Geass, who ingratiates himself thoroughly into Britannian culture after becoming the Knight of Seven. And later the Knight of Zero, right-hand man to the new Emperor...his childhood friend, Lelouch. Who he helped dismantle the empire entirely. But since their plan involved Lelouch building an image as the worst dictator in history, and Suzaku seeming to die in service of that dictator, all but the small handful of people who figured out what was happening will remember him as nothing but a traitor. And that's just fine with him.
- The Kyoto House is the last type, as they publicly surrendered to the Britannians, but they secretly support the JLF and later the Black Knights by building Knightmare Frames.
- In the final arc, Nina, Lloyd, Cecile, and Sayoko all act as this, of the Heel–Face Turn type specifically under orders of Lelouch as he didn't want them to be dragged down with him when he finally died as the most reviled tyrant.
- A very strange and unique example of this comes from the Crest of the Stars franchise. Ghintec/Jinto starts out a little ambivalent about the centerpiece Space Elves of the work, the Abh, but by the start of the second "season" of the TV series he's unflinchingly loyal to the Abh and their conquering empire (in part due to, uh, his loyalty to Lamhirh/Lafiel, one of the princesses of the Abh). The people of his own world definitely see him (and his dad) as examples of this trope in-show and it causes a lot of trouble later on. The unique element? Ghintec is our hero and point-of-view character.
- Becomes a big plot point in Banner III, when Jinto's foster parents (leaders of La Résistance) attempt to convince him to defect. Jinto points out that he can't defect, as he's the only thing standing between them and annihilation by the Abh. (Although his mother suspects it's really about the girl he brought home to dinner with him). It's all very tragic. Leads to Jinto's foster mother pleading with the Abh princess Lafiel to take care of her son. Her response was poetic and quite moving.
- It's actually lampshaded, when Jinto wonders if he had met other Abh before Lafiel, would he still be on the side of the Abh?
- George "President Chicken-Maggot" Sairas in Death Note earns his nickname from collaborating with Kira after his predecessor kills himself following a failed operation against the mafia (one that may or may not have been caused by the actual Kira writing in the Death Note).
- In Fullmetal Alchemist the entire upper echelon of Amestris's government is composed of Quislings. They all secretly serve an inhuman being bent on killing everyone in the country, being promised immortality in return.
- The mayor of Shinjuku in Karas fits this trope, cheerfully doing Eko's bidding—and believing in his philosophy.
- Kill la Kill: Ragyo Kiryuin is a (former) human who willingly supports the invasion and destruction of Earth by the Life Fibers.
- Job Trünicht in Legend of the Galactic Heroes eventually becomes this, selling out his nation to Reinhart's invasion force by leveraging the fact that he still has legitimacy in Free Planets Alliance space (and his own private army of followers). His end eventually comes during the Empire's second civil war when his lack of moral scruples becomes too much for Reuenthal, who uses the fact that he's currently a traitor to the Empire anyway to kill Trünicht.
- In No Game No Life, when Sora and Shiro first arrive in Disboard, they see a tournament held to determine the next ruler of Elkia, the last city of Imanity. The candidate closest to winning, Kurami(a slave of the elves), is collaborating with an elf named Feel(who treats her as a friend rather than a slave), who provides magical assistance that none of the other candidates can notice or hope to match, and says that if she wins, she'll make Elkia a Protectorate of the large elven nation so that Imanity won't have to face a Hopeless War against them and the other 14 more powerful races. While Sora's disgusted by Kurami's lack of faith in Imanity's potential, he concedes that an alliance with the elves is a good idea, so he seems to understand that Kurami's not after power.
- In Overlord (2012), while Ainz is generally not a good leader, he does have good social skills due to his past as a salaryman. This has helped him convince people to sell out in exchange for things they have always desperately desired:
- Fluder Paradyne betrays the Empire he helped found and protected for centuries and the Emperor whom he loved and raised as if he were his own grandchild because Ainz embodies the peak of magical power Fluder has sought out his entire life.
- Pluton Ainzach throws in his lot with Ainz after Ainz promises to turn the Adventurers' Guild into true explorers of the unknown as opposed to glorified monster hunting mercenaries.
- Princess Renner brokers a secret deal to sell out the Re-Estize Kingdom to Ainz for Demiurge, in exchange for becoming one of his minions afterwards.
- Neia Baraja was so impressed by his "war efforts" against Jaldabaoth that she worships him like some sort of god who can do nothing wrong (despite the Jaldabaoth attacks were something he had a hand in arranging). It reaches the point where she usurps the holy authority to become the Holy Kingdom's authority after the war.
- Gondo agrees to share runecrafting with Ainz since runesmiths are no longer appreciated in the Dwarven Kingdom and Ainz is the only one willing to help them revive the dying art.
- Sailor Moon:
- Sailors Neptune and Uranus in the final season of Sailor Moon give up their star seeds willingly to Galaxia for power, gladly fight their own friends and teammates, and kill 2 of the others Sailors Pluto and Saturn. This is a gambit on their part to use their powers to capture Galaxia's own star seed. They manage to fool Galaxia well enough, but their plan still fails miserably because Galaxia has no star seed.
- According to the manga, every member of the Sailor Animamates group was originally a normal soldier on their respective home planets. They each betrayed and murdered their planet's real Sailor Senshi to pave the way for Shadow Galaxia's hordes, and Galaxia rewarded them by making them fake Sailors, hence the "artificial" nature of their names.
- Eggman does this a bit during the Metarex Saga of Sonic X... that said, he doesn't do a terrible job of it and is out for himself from beginning to end.
