History Monster / AnimeAndMangaGToN

* ''Anime/{{Kite}}'': [[DirtyCop Akai]] raises orphaned girls [[CorruptionOfAMinor to become]] his own personal [[{{Tykebomb}} assassins]], preaching justice to them while really using them to wipe out criminals both to stroke his own ego or remove underworld competition for his own actions. Killing Sawa's parents, Akai uses her as little more than a weapon and [[SexSlave sex toy]], raping her as he pleases, gifts her earrings filled with her own parents blood, and notably [[WouldHurtAChild repeats the molestation on his other girls]]. His crimes dwarfing even those of his fellow rapist partner-in-crime, Akai is utterly disgusting.

** [[EvilMatriarch Ragyo Kiryuin]] is the [[CorruptCorporateExecutive CEO]] of [[Characters/KillLaKillKiryuinConglomerate REVOCS]] and the [[AbusiveParents monstrous mother]] of [[Characters/KillLaKillSatsukiKiryuin Satsuki Kiryuin]] and [[Characters/KillLaKillRyukoMatoi Ryuko Matoi]]. Aiming to annihilate all human life on Earth with the alien Life Fibers, Ragyo previously married the genius scientist Soichiro/Isshin, having her daughters with him and using them for experiments with the Life Fibers, callously throwing away Ryuko when she thought her work had killed her daughter. Over the years, Ragyo has Soichiro hunted down and murdered when he betrayed her, and frequently [[ParentalIncest subjects Satsuki to sexual abuse]]. Reunited with Ryuko seventeen years later, Ragyo immediately breaks her mind into subservience and later molests her mind-controlled daughter before sending her off in an attempt to kill her friends resisting Ragyo. While preparing for her apocalyptic endgame, Ragyo has nearly all of humanity converted into enslaved, mindless COVERS to build herself an army and while Satsuki is held in her captivity, continues to subject the helpless young woman to further sexual assault. Even when eventually defeated by Ryuko and offered a chance for reconciliation, Ragyo refuses any kinship and [[SpitefulSuicide spitefully kills herself]], cementing her status as a hollow megalomaniac whose only desire was to dominate everything under her own will.
** [[Characters/KillLaKillNuiHarime Nui Harime]] is the Grand Couturier of REVOCS and Ragyo Kiryuin's most powerful agent. A [[GigglingVillain giggling]] psychopath who is eager to see the culmination of Life Fibers [[KillAllHumans annihilating all human life on Earth]], Nui kicked off Ryuko's quest for revenge when Nui viciously murdered the girl's father, Isshin Matoi. Continuing to bulk up REVOCS' power and the creation of COVERS with her own two hands, Nui later causes all sorts of mischief by turning Ryuko into a rampaging monster before playing a key role in her horrible MindRape and brainwashing. After a failed attempt to force Ryuko and her allies to massacre each other, Nui merges her essence with the Original Life Fiber and [[FusionDance combines with Ragyo]] as a last-ditch effort to ensure the annihilation of humanity.

** [[TheHedonist Shogun Tokugawa Nariyoshi]] is a [[PsychopathicManchild selfish, depraved manchild]] who loves violence as an art. [[TheCaligula The Shogun]]'s rule sees a bigoted genocide targeting nomads, with peaceful villages regularly wiped out to the last. Having numerous convicts engage in [[InvoluntaryBattleToTheDeath brutal death matches]], the Shogun intends to send them to the mysterious island to hunt for the elixir of immortality despite knowing most will die because the Shogun intentionally sent numerous others to their deaths on "test" voyages first. Steadily revealed to be worse and worse throughout the series, the Shogun even once had entire families executed, [[WouldHurtAChild including infants]], just to watch the joy of bloodshed. Upon learning of the Iwagakure village chief's treason, the Shogun not only executes the chief but is indicated to have the entire village wiped out in retribution.

* ''Manga/JujutsuKaisen'': [[Characters/JujutsuKaisenMahito Mahito]], the youngest disaster [[Characters/JujutsuKaisenCursedSpiritsAndCurseUsers Curse]], represents the fear and hatred humans have towards each other, and seeks [[KillAllHumans the eradication of mankind]]. A [[PsychopathicManchild sadistic killer]], Mahito uses his power [[{{Biomanipulation}} Idle Transfiguration]] to toy with the lives of humans, including children, by transforming them into monsters and weapons, all while they are aware of their suffering and beg for help. Meeting a troubled young man named Junpei, Mahito [[TheCorrupter toys with his head to turn Junpei into a killer for his own amusement]], murdering Junpei's mother to frame a bully, and eventually turning Junpei into a monster who dies in sheer anguish, all while laughing at Yuji's failed attempt to save him. Later on, Mahito takes part in the Shibuya incident to seal [[Characters/JujutsuKaisenSatoruGojo Satoru Gojo]] by transforming over a thousand people into monsters and slaughtering hundreds of other civilians, all while attempting to break Yuji's mind and soul for petty revenge and enjoyment by killing his mentor Nanami in front of him and one of his best friends, Nobara. A cruel and sadistic Curse lacking the care for his fellow Curses that his comrades share, Mahito lives up to being the worst humanity has to offer, even for a Curse.