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  • Galaxy Express 999 franchise:
    • 1979 film:
      • Count Mecha is the nemesis of young Tetsuro Hoshino. Once a man who accepted mechanization, Count Mecha decides to fill his days with hunting to alleviate boredom. His chosen prey is human beings. Mecha hunts down and slaughters countless innocents on his private world, including Tetsuro's mother, before taking them and mounting their remains as obscene trophies. When Tetsuro arrives, Mecha only sneers that he's killed too many mothers to remember them all and tries to murder the boy as well.
      • Queen Promethium, the mother of the heroine Maetel, condemned her world La Metal to mechanization and tried to murder Maetel's father when he attempted to oppose her. Running La Metal as a horrific dystopia, Promethium has people abducted and made into living machines to serve in perpetual agony as the power source of La Metal, having forced Maetel into a machine body so Maetel will gather victims for that purpose. When Maetel reveals her true plans against her evil mother, Promethium attempts to murder Tetsuro herself to deny Maetel any sense of victory.
    • Maetel Legend: Lord Hardgear is a Mad Scientist who wants to encase all of humanity in machine bodies that he can brainwash and control. Convincing the Queen of his planet to undergo the mechanization process, Hardgear has her order her subjects to do the same and threatens to kill those who refuse. During the mechanization process itself, the soul is separated from the body, which Hardgear liquefies and drinks. While fighting the Queen's daughters, Hardgear sends mechanized versions of their friends to attack them, relishing in exercising control over their former comrades.
  • Gamaran:
    • Ryuugo Daimaru, heir of the Daimaru, is obsessed with the ascendance of the family, or more accurately himself. To that end, Ryugo has cultivated the talent of his mentally unhinged younger brother Sakon who is known as the strongest in the school's history. When Sakon was young, Ryugo threw him into a basement with multiple other prisoners with the promise only one man would be allowed to leave after the others were dead. When a berserk Sakon emerged, Ryugo directed him to kill their father who he determined as worthless. Ryugo uses Sakon's violent side to destroy all those who stand in his way and when Gamaran fights Sakon, Ryugo rants how Sakon isn't allowed to lose because of how perfect Ryugo made him.
    • Jinsuke Kurogane is the mightiest sword in the world and the most wicked. Jinsuke joined the Ogame School, only to later give its leaders the ultimatum of joining with him to conquer the world or die if they refused. When they showed their reluctance, Jinsuke slaughtered the school with his followers, including the friends of his son Gama, in front of Gama's eyes, before defeating Gama as well and only sparing him on a whim. Jinsuke shows no hesitance in an attempt to kill Gama later and no remorse in killing his own students should he decide to. He manipulates the Washitzu clan by holding the mother of its new Daimyo captive with her life on the line and builds a power base where he plans to create a world where he, the strongest rules, and any who oppose him fall to his sword. In the end, when asked if he has any regrets, he declares he has not even one.
    • Mario Kujo, initially Jinsuke's right hand man, is in reality a spy for the Shogunate. Kujo aided Jinsuke in the slaughter of the Ogame School, not for the sake of his sword skills but for his eventual political power. To that end, Kujo has no compunction destroying sword schools and anyone else while also betraying his own Muho School to be exterminated by the Shogunate. He also, unlike nearly every other fighter, has no compunction cheating in his fights by having guards ambush his victims. In a series defined by honor in battle, Kujo sticks out by having none and viewing all around him as nothing more than stepping stones to his rise to glory. Even his initial stoicism is an act as he displays nothing more than glee at killing the brother of one opponent in front of him.
  • Gangsta.: The vicious mobster Ivan Glaziev is the man who leads the purge of the persecuted Twilights- those who have enhanced abilities, handicaps and shortened lifespans thanks to the Fantastic Drug Celebre. Glaziev is seen having Twilights butchered, tortured and killed with his attacks not sparing innocent civilians or even children. One Twilight is blackmailed into attacking one of the only safe havens for the Twilights by Glaziev holding his wife and daughter hostage. When the man is dying, Glaziev cheerfully informs him that he had already killed the two by chopping their limbs off and throwing them away. Possibly Glaziev's worst act is keeping the Twilight Erika as his personal hitwoman, having conditioned her with years of mental and sexual abuse. When he reveals this to Erika's long-lost brother Delico, Glaziev says it gave him a genuine thrill to rape her every evening, knowing she had the face of the brother who always greeted Glaziev so politely.
  • Gargantia on the Verdurous Planet: Aleria from the second OVA is, in short, the Big Sister Bully taken to the max and then some. She cares for absolutely nothing but complete social, political, and religious control of her father's fleet and will do anything to get what she wants. When her youngest sister Linaria inherits her father's fleet and converts to a sky-based religion (implied to be a means of escaping Aleria), Aleria orders her other two sisters to hunt down her freighter and kill everyone on board. By the time Kugel arrived, only Linaria remained because of Aleria's relentless attack. She later intentionally lures the Hideauze onto the fleet by setting off mines on the seabed in order to publicly shame Kugel and leave the fleet up for grabs. Finally, after both attempts fail, she finds out that Linaria died. Hearing this, she smirks at her own sister's death and tries to usurp the vacant position as high priestess in order to become the leader of the fleet. Villains this bad are very hard to come by in this series, but Aleria takes the cake as the vilest of the bunch.
  • GARO The Animation: Priest Mendoza is the mastermind behind the misfortunes befalling the kingdom of Valiante. A former Alchemist of the Makai Order, Mendoza was expelled from the Order for sacrificing humans to enable himself to control the monsters known as Horrors. After marrying, Mendoza's child was born with the same curse the Order had placed on him, and in response, Mendoza murdered both his wife and baby, swearing vengeance on the Makai Order in the process. Using the Horrors to murder numerous innocents, Mendoza blames the Horrors' appearance on the heroic Makai Knights, who are forbidden from taking human life, and, under this pretense, leads purges against the knights resulting in them being tortured, killed, or, in the cases of the Priestesses, raped, while Mendoza has one of the most powerful members burned at the stake in public view. When confronted by León Luis, Mendoza mentally forces him to relieve his own mother's burning at the stake, causing the boy to go on a rampage that decimates a nearby village. Having survived his near-death, Mendoza uses the tormented souls of hundreds of Makai Knights and Alchemists to summon an ancient Horror that, after consuming numerous innocents, Mendoza uses to give himself incredible power, at which point he proclaims himself the new god of humanity. Spiteful, cruel, egotistical and petty, Mendoza aimed at nothing less than utter domination and destruction to avenge his wounded pride.
  • Gasaraki:
    • Kazukiyo is the eldest son from the Gowa family. He assassinates a minister of justice in what looks like a tragic road accident, has soldiers injected with Psycho Serum and forced to pilot the series' mecha for 36 hours straight (something that his brother Kiyotsugu refuses to do), provide assistances to a Well-Intentioned Extremist, allowing him to stage a coup, uses his own little sister Misuzu in an experiment due to her powers as a kai (empath that can synch with the Humongous Mecha from the series) (something that, again, Kiyotsugu objects to), and commits patricide (and when his dad was trying to save Misuzu from him) in order to achieve his goal of power.
    • His very ancient predecessor, Tsuna Watanabe, isn't any better, deliberately having the city of Kyoto set on fire, letting the firestorm of Gasaraki be summoned, and then torturing Yushiro by shooting him in the knees with arrows when he refuses to let the summoning continue.
  • Gate: Zorzal El Caesar, Crown Prince of the Empire, embodies the worst traits of his culture. Introduced violently raping the demi-human Queen Tyuule of the warrior rabbits, it is revealed Zorzal led the conquest and massacre of her people. When Tyuule pledged herself to be his slave to spare them, Zorzal accepted before having her people butchered anyways while lying to them how she sold them out to save her own life. Zorzal leads a raid on Ginza that takes Japanese people as slaves, keeping a young woman named Noriko as a Sex Slave which infuriates the JSDF enough into brutalizing him while not even his own father twitches a finger to protect him. With an insatiable ego, Zorzal even furiously threatens to destroy Japan and thinks how he will murder his own family and people for not acknowledging his greatness. In the light novel, he boasts about how he not only betrayed his word regarding the Warrior Bunnies, but even admits that he wanted Tyuule discover this, hoping to drive her into a rage where she'd attack him so he could have the pleasure of beating her down. When he finds out that she's far too smart for that and tried to lead him into a trap of his own making, he flies into a rage and beat several of his slaves to death, including his sex slaves, and plans to punish Tyuule for it, by having her gang-raped.
  • Gdleen OVA: The godly figure known as the "Governor" is actually a supercomputer known as Husnet, who has kept control of Gdleen for centuries manipulating countless wars among the primitive tribes and keeping them technologically stagnant so they never rise up. Demanding constant sacrifice of innocents—which it keeps in permanent suspended animation to harness information from them—Husner has the savage Barbaress tribe massacre an entire neutral city simply for the purposes of wiping out their hated enemies the Miyori tribe. When finally confronted by Ryu, Husner offers to let Ryu go only if he gives up his love interest Fana, cruelly dismissing all the lives it's thrown away for the sake of its god complex.
  • GeGeGe no Kitarō 2018 anime: Backbeard is the wicked ruler of the western Yokai. A monstrous tyrant who intends to complete the Brigadoon and convert humanity to his zombified Yokai slaves, Backbeard exterminates the Hantu of Malay for not submitting to him, attacking Gegege Forest to massacre the Japanese Yokai within, and sends his servants to cause chaos throughout Japan. Also attempting to force the young witch Agnes to sacrifice herself, Backbeard had forced her mother to do the same to protect her and her sister Adele, who Backbeard likewise is fine with sacrificing to complete the Brigadoon. Backbeard shows no regard for any collateral damage, trying to kill Kitaro's young human friend Mana, gloating that nothing matters but submission to him.
  • Genma Wars:
  • Genocyber: Dr. Kenneth Reed was an amoral research assistant to Dr. Nguyen Morgan. Arranging for Morgan and his wife to die, Kenneth takes their super-powered daughters for his own research. When a detective helping the girls hides them in a hospital, Kenneth and his goons slaughter the entire building, gruesomely eviscerating the detective. Even as he dies, Kenneth watches with glee as the girls merge into the titular Genocyber, destroying Hong Kong and killing millions in the process.
  • Getter Robo Go: Professor Rando was an Evil Overlord whose mission was to Take Over the World even if he had to kill every human on it. Starting with mass murder, Rando forcibly converted his victims to mindless killing machine cyborgs and unleashed them on the rest of humanity. He had no compunction using nuclear weapons on a city as well, all borne out of his desire to rule the world.
  • Ghost Hunt: The anime version of Kaneyuki "Urado" Miyama was a sickly man trying to extend his life in the worst way. Changing his name to "Urado" after Vlad the Impaler, he began to abducts countless innocents, cutting their throats to bleed them out and bathe in their blood. After his death, his ghost continues haunting his old home, abducting those who investigate or wander inside to murder them for their blood as well. When the heroes arrive with other paranormal investigators, Urado wastes no time in abducting and murdering several of the investigators before trying to murder the heroine.
  • Ghost in the Shell: Stand Alone Complex: Kazundo Gohda is the director of the Cabinet Intelligence Service. A smug, charmless, callous, and amoral Manipulative Bastard, Gohda's (largely self-inflicted) Inferiority Superiority Complex and obsession with Great Man theory led him to kill hundreds with the terrorist-producing Individual Eleven virus, come within inches of starting a genocidal war, and try to nuke a crowded city-state half a mile off the coast of Japan just to show that he could. To give some impression of how severely he eclipses the other villains of the series in heinousness, one of his minor crimes was deliberately exposing labourers to a dangerous work environment (he asked them to excavate a buried ruin, but didn't tell them it was a heavily-irradiated nuclear facility), and then covering it up with a string of murders. Someone else did something similar on much the same scale elsewhere in the series, and it became the driving force of most of the first season.
  • Ghost Stories (Original version): Yamime, from episode 15, "The Devil's Spell", is a demonic entity masquerading as a schoolgirl named Shinobu Matsuba. Years earlier, Yamime consumed the real Shinobu to use her body as a vessel, and is introduced slaughtering another girl offscreen in the opening sequence. In her human guise, Yamime tricks Satsuki and three other girls into performing a "wish-granting" ritual that will let her prey on them while they sleep, and when they try to back out, a counterspell that would erase them from existence. When Amanojaku stops Satsuki from performing the spell, Yamime comes after her in her true monstrous form, gleefully intending to eat her. A smug, sadistic predator behind her cheerful, easy-going demeanor, Yamime disgusted even Amanojaku, a monstrous demon himself.
  • Ginga Densetsu Weed: Shōgun from the manga, the (literally) Ax-Crazy ruler of the monkeys and apes, is a vicious tyrant who will kill anyone and anything that gets in his way, or even if it's simply in the area to vent frustration on. However, what sets Shogun apart are his eating habits. When he's hungry, he just wrenches a baby out of the arms of its mother and takes it to his private lair to devour. He particularly enjoys drinking a mix of puppy blood and liquor.
  • The Girl In Twilight: Judge Hiishi, from "The Magnificent Five. Or Eleven" and "The Hero in Me", is a judge from the Wild West Fragment that Asuka Tsuchimiya and her companions visited. Introduced by hosting a gladiatorial duel of two people in a land dispute, it was revealed that she forces a duel in order to settle civil disputes, resulting in countless deaths. When Asuka and her companions robbed a bank and got captured, the Judge then gave them several unfair punishments such as working in mines for dozens of years, extending their punishment when Asuka and her companions protested the rule. It was revealed that she conspired together with the local Sheriff in order to capture several bounty hunters and fugitives in order to pit them against each other in order to gain more power and support from the citizens, and will use said power in order to let the Twilight swallow the Wild West Fragment.
  • Goblin Slayer:
    • The Goblin Lord is the worst of his wicked kind encountered so far. A monstrous killer who thinks nothing of sacrificing his own goblins—or even killing them in a fit of pique—the Goblin Lord leads his forces to obliterate, torture and rape all they find, taking women as hostages to be violated and forced to bear goblin children to fuel his ranks. Intending on exterminating a village in his path and taking all the women as sex slaves, the Goblin Lord even uses the female captives he already has as human shields. When cornered, the Goblin Lord begs for his life, while remembering that every adventurer who ever took pity on him was raped and tortured to death by him, dying screaming and begging.
    • The Dark Elf is a member of the Evil Sect who has women butchered and vivisected as sacrifices while leading goblins in the sewers of Water Town to cause as much havoc as he can. Later resurfacing during the Harvest Festival arc, the Dark Elf intends to use his goblins to massacre and violate all in their path while he summons Hecantocheir, the hundred-armed giant, to obliterate the rest, and goes on a rampage to throw the world into chaos and devastation, intending on summoning many more monsters to kill as many people as possible.
  • Godzilla: City On the Edge of Battle: Mulu-elu Galu-gu is a Bilusaludo who, exploiting Earth's desire for a weapon to combat Godzilla, created Mechagodzilla, while intending to turn it against humanity once it disposes of Godzilla. However, he was forced to leave Earth before he can enact on that plan, leaving Mechagodzilla unchecked as it kills off numerous lifeforms still living on Earth, humans included. Finding Mechagodzilla once more, Mulu-elu tricks Haruo Sakaki and his soldiers into infecting themselves with Mechagodzilla's nanometal in an attempt to defeat Godzilla. When they learn of Mulu-elu's plans to assimilate the entire Earth in nanometal afterwards, killing all life in the process, Mulu-elu would use the nanometal to painfully subject them into submission, leaving Haruo's Love Interest, Yuko Tani, in a permanent coma. Proud of being called a monster for his self-appointed superiority and omnicidal designs, Mulu-elu Galu-gu was the most evil being in a world of monsters.
  • Goku: Midnight Eye: Seemingly an upstanding businessman, Genji Hakuryu is really a ruthless Arms Dealer who uses a psychic woman to hypnotize any detectives trailing him into committing suicide. Eventually killing all seven detectives the police have trailing him, Hakuryu goes on to attempt the same hypnosis-induced suicide on Goku. Selling to a general a chemical weapon which could potentially kill hundreds of thousands, Hakuryu then turns around and sells another weapon to the enemy country of the general he had just does business with, not caring who dies as long as he profits.
  • GoLion:
    • Emperor Daibazaal, the ruler of the Galran Empire, is a despotic conqueror, slaver and murderer. Seeking to expand his grasp across the Galaxy, Daibazaal conquers planets that will submit and destroys those that will not. The slaves taken are condemned to fight in gladiator arenas, or fed to the monsters on planet Galra for his amusement. Daibazaal has no hesitation at taking attractive slave women as concubines. One that he once favored once begged him to give better treatment to the slaves, for which he strangled her to death. Daibazaal and his son Sincline have a mutual loathing of one another and Daibazaal has no compunction trying to get him killed. Brutal, nasty, smug and cruel, Daibazaal is an example of an Evil Overlord at his worst.
    • Prince Sincline, Daibazaal's son and eventual leader of the Galran armies, is introduced presenting his father with the severed heads of the leaders of worlds he had conquered. Sincline spearheads the invasion against the planet Altea, guarded by the robot GoLion and its five pilots. Initially honorable and chivalrous, Sincline reveals his true colors when he cheats in single combat and develops a fascination with Princess Fala, one of the pilots. His obsession carries over to abducting her cousin, Princess Amue, who resembles her greatly and abusing—possibly raping—her. Sincline is notorious for his rage at subordinates and failure is usually met with swift and painful death. With no loyalty to his father, Sincline tries to assassinate him, before pulling a successful coup where he forces Daibazaal to fight the heroes with the promise he'll be restored to the throne if he wins. Naturally, Sincline sabotages his father and lets Daibazaal die before hemming in GoLion with innocent prisoners in exploding capsules. When Galra is besieged, the new King Sincline slaughters his own subordinates who wish to surrender and has no compunction trying to kill Princess Amue. When his grandmother, Daibazaal's mother and adviser Witch Honerva opposes him in grief over Daibazaal's death, Sincline viciously kills her. He later takes a hostage to ensure his escape from Galra and tries to kill the heroes via bombardment, declaring that as long as he lives, Galra will never die.
  • Gosick: Marquis Albert du Blois is the leader of Sauville's Ministry of the Occult. A man obsessed with the supernatural, he viewed his own children as nothing more than tools. After he met a woman who matched the bloodline he was looking for, he kidnapped her and raped her to produce a child before stealing the daughter Victorique from her. Albert apparently manipulated the start of World War II and blackmailed the King into making him the Prime Minister. He also managed to amass a legion of followers by making the people believe that his daughter was a monster.
  • Goth: The second chapter's killer is a cafe manager who sadistically mutilates and murders women, before cataloging the gory details of his kill in his notebook. A hateful misogynist, the manager tells his victims they are guilty sinners who deserve to die. Capturing Yoru Morino, the manager only keeps her alive for the time being out of fear the police are on his tracks, while telling the captive girl how much he looks forward to brutally killing her.
  • Grashros, by Muneyuki Kaneshiro & Akeji Fujimura: Kanji is the leader of Ibesa, a hedonistic tribe of young people in prehistoric times that attack other tribes to enslave their elderly population. Meeting the protagonists after their villages were destroyed, Kanji acts as a cheerful young man to convince them to join his tribe. When the protagonists and one of his younger servants try to free some elderly slaves, Kanji kills said servant, the grandson of the tribesmen that he enslaved, and hangs his body, before trying to beat a little girl to death. Kanji's cruelty traumatized his victims, resulting in Akku avoiding human society for years.
  • Green Blood: Edward King was an Irish Immigrant to New York decades before the series started with his friend Gene McDowell with whom he founded the Gravediggers gang. Edward grew bored with the Five Points and left, after murdering the woman who had borne him two children, in front of his elder son Brad, inspiring Brad's lifelong hatred and desire for revenge. Years later, Edward returned when the Gravediggers were warring against their rivals, the Iron Butterflies, and manipulated both sides, supplying Gene's son Kip with a Gatling Gun simply to make the carnage more fun. After escaping again by threatening Kip's life to Gene, Edward returned to the frontier with his Crimson Gang. When one of them was defeated by Brad, Edward killed him by crushing his skull with his horse's hoof simply because the man was helpless and Edward could. Edward initiated a massacre in another town, capping it off by shooting a priest and declaring "This is my freedom" before they rode to Montana where Edward supplied his weapons to help wipe out the Sioux and Cheyenne warriors for amusement and gain. Edward later faked his capture in Kansas City to plunder its gold reserves. When both his sons confronted him, Edward laughed that he had "forgotten the bitch bore two curs" and engaged them, willing to have his stolen battleship burn down Kansas City and trying to kill his sons with sadistic relish, mocking his younger son how it would feel to die at a "real man's" hands.
  • Grimm's Fairy Tale Classics:
    • Bluebeard, from season 1's "Bluebeard", is a seemingly charming rich gentleman, but in truth is a vicious Serial Killer who keeps the corpses of his murdered wives locked in a dark room. When his previous wife discovered his dark secret, he murdered her in a blind rage. Seeking a wife who would not disappoint him, Bluebeard woos a young maiden, Josephine, and coerces her into marriage, offering her riches and all his treasures, but warns her not to enter his cellar, for fear of her discovering his dark secret. When Josephine disobeys him—he had given her the keys to all the rooms—and discovers all of his previous victims, Bluebeard flies into a rage and chases her throughout the mansion, sword in hand, intent on killing her for her disobedience. Vengeful and unforgiving, masked by a polite exterior, Bluebeard was just as vile as his literary counterpart.
    • The wicked queen, from Season 2's "The Six Swans", marries the kind king, whereupon she attempts to murder his seven children. When this fails, she turns his six sons into swans, forcing his one daughter to stay mute for six years and sew special shirts to break the curse. The Queen proceeds to murder her husband, finding her stepdaughter with a new family, whereupon she throws her stepdaughter's baby into the woods to die and frames the princess for it in an attempt to have her burnt as a witch.
  • Guilty Crown:
    • Shuichiro Keido is the leader of the GHQ Anti-Bodies and the Arch-Enemy of a resistance organization known as Funeral Parlor. In the past, upon learning that his friend Kurosu Ouma's offspring would become the progenitors of a new race in the aftermath of the Fourth Apocalypse, he experimented on countless orphan boys to create an "Adam" that would deny Kurosu the privilege of shaping the next generation of humanity in his own image. After learning that Kurosu's research on the Apocalypse Virus surpasses his own, he murders his friend in a jealous rage. In the present day, after learning that Funeral Parlor is rebelling against GHQ, Shuichiro then uses any means to take them down, such as firing a Kill Sat that ends up killing several Funeral Parlor members and their collaborators. He then launches an Apocalypse Virus along with his general, Segai Waltz Makoto, in order to incriminate Funeral Parlor. After one of the districts of Tokyo, Loop 7, gets infected thanks to Keido's machinations, Keido announces Loop 7 to be sealed for the next ten years and then enacts a plan to exterminate anyone in the district. Secretly helping an organization known as Da'ath, Keido attempts to revive the deceased leader of Funeral Parlor, Gai Tsutsugami, in order to make him the next Adam, and also helps Da'ath initiate a worldwide outbreak in order to spite Kurosu even further.
    • The aforementioned Segai Waltz Makoto is a seemingly polite GHQ Anti-Bodies officer who is introduced hanging a man upside down. Capturing the hero, Shu Ouma, who joined Funeral Parlor, he attempts to manipulate Shu to turn against them. During the Funeral Parlor's raid on retrieving the Apocalypse Virus, Segai traps the members in an empty plane and launches the Apocalypse Virus all over Tokyo via a broadcasting tower. Participating in the Loop 7 massacre, Segai uses it in order to manipulate the students of Tennouzou High School into handing over the disguising members of Funeral Parlor. While tracking a scientist, Segai manipulates several civilians who needed a vaccine for the Apocalypse Virus in an office where several of Funeral Parlor's members are hiding before slaughtering them all. Segai subsequently attacks the last of Funeral Parlor stronghold before meeting his end when trying to kill a handicapped girl with a truck.
  • Guilty Gear Xtra: The narcissistic, psychotic, and sadistic Geena leaves her mark despite her short tenure in this interquel manga. Geena is a member of the Post-War Administration Bureau tasked with retrieving the War Relic "Zessen" from the Japanese colony. She narrowly kills its keeper, Mizuha's grandfather, in front of her and is only stopped by a recently awakened Tyr, who managed to destroy her arm. After that failure, she is now only concerned getting revenge on them for getting in her way. She later confronts them, sadistically shooting the young Tyr and leaving him to bleed out. When Axl Low intercepted her, she blows off part of a building to crush an innocent little girl and shoots him In the Back when he's distracted. After assimilating with the Gear Mothership, Geena announces her intention of annihilating "this rotten world" and every human in it as a weapon should.
  • Gunsmith Cats OVA: Natasha "Bloody Pierce" Radinov is a vicious ex-Spetsnaz who makes her living as an assassin and mercenary, who only accepts payment in heroin so she can sell it for higher prices in Russia. Introducing herself in a routine murder, Radinov accepts a hit for a gun-runner. Radinov proceeds to storm a police safe house, massacring every officer inside before killing her target. Later kidnapping the heroine Rally Vincent's partner Minnie May, Radinov forms a deeply personal grudge when Rally manages to injure her. Killing several innocent civilians who were just in a spot she wanted to relax in, Radinov sadistically kills one of her employers when the operation's chief judges him a loose end. When the chief, mayoral candidate Eddie Haints, tries to lure Rally into a trap for Radinov, Radinov simply sprays the area with machine gun fire, not caring if she kills Haints as well while killing several of his guards. When pursued by Rally, Radinov kills several more innocent people in her way and expresses her wish to torment Rally slowly to death, gloating she'll show the young bounty hunter "all she knows about pain."
  • Gun×Clover:
    • Sayuri Higuchi, Morito's master, openly talks about using children as experiments and making them into soldiers, and has no problems with getting rid of them when they outlive their use. One of her experiments with children, done so she could gain the ability to use "Dead Language," involved using 10,000 subjects as guinea pigs, of whom 90 percent died or were incapacitated. When an experiment was successful, she would chop the limbs of those that it worked on, and graft it onto herself.
    • Alex Valentine Wheeler Jr. shows he's a nasty customer by ambushing the heroine Kotonoha and tying her down before sexually assaulting her. He gleefully enjoys seeing her struggle and shifting through her multiple personalities until she realizes she's helpless. Later, he decides to murder two girls he was in charge of protecting solely to piss off Kotonoha's escort Morito by presenting him with their dismembered arms.
  • Guyver: Of the 12 Zoalords appointed by Archanfel, these two are the worst:
    • Richard Guyot plans to take control of Chronos by taking one of the Guyver Units for himself and becoming invincible. First he has his own Zoanoids attack numerous innocent people to recover the lost Guyver units. The Guyvers foil these attempts, so Guyot forcibly turns his underling Genzo Makishima into a Zoanoid, Enzyme I, who tortures Sho Fukamachi to death while under Guyot's control. Genzo only had a week to live, and does everything Guyot asked of him in exchange for being allowed to live longer, but Guyot simply commands him to self-destruct once Genzo finished his task, killing both Genzo and Sho. Guyot assists another Zoalord, Hamilcar Barcas, in one diabolical trap—they forcibly turn a man into a Zoanoid, take over his mind, and then set him on his son, the first Guyver Sho Fukamachi. The plan fails, but Sho is forced to kill his own father in self-defense. Guyot, fed up with his minions' failure, attacks the Guyvers himself several times, at one point catching two high school students in the crossfire. He even goes out of his way to torture another Zoalord, a Prototype named Murakami, to death, gloating as he does it, before attempting to do the same to Guyver I and Guyver III with the Unit Remover weapon. This also fails, as Archanfel, well aware of Guyot's treachery, attacks Richard himself. Guyot flees in terror, murdering several of his own forces. When cornered, Guyot uses a dangerous attack that would have destroyed the entire planet, just to save his own skin. While a coward at heart, Guyot was one of the most vicious Zoalords in existence.
    • Cabral Khan, along with Jabir Ibn Hayyan and Luggnagg de Krumeggnic, betrays Archanfel. Trapping Aptom in an And I Must Scream state, he uses him as bait to trap Sho Fukamachi and Toshiaki Hayami. When they manage to free themselves, he allows them to free Aptom, then hijacks Aptom's brain and uses him as a weapon to murder them both. Forcing Aptom to devour every Zoanoid in sight, all of whom are on Khan's side, he forces Aptom to torture Hayami to death. When Sho forcibly frees Aptom from the parasitic Mind-Control Device, Khan flies into a rage and broadcasts a signal to every civilian Zoanoid all over the city. Unable to stop themselves, thousands of fathers, brothers, and lovers march to their deaths as Khan eats them all alive. The audience even sees their loved ones begging them to stop, but they can't. Absorbing them to fuel his Dragon Burst transformation, he becomes a giant monster and starts frantically trying to murder Sho and Aptom. This is how he also murdered the last of the resistance in the days after X Day. When Sho unveils the Gigantic Exceed, Khan devours even more people to become even stronger.
  • Hades Project Zeorymer OVA adaptation: Masaki Kihara is the mastermind behind the events of the series and the creator of the titular mecha Zeorymer. Formerly a scientist working for the secret organization known as the Hau Dragon, Masaki created their mechas as well as the Artificial Humans to pilot them. Betraying the Hau Dragon to steal the Zeorymer, Masaki designates his own clone as its pilot and uploads his memories in the Zeorymer before his eventual death. Years later, when his clone Masato Akitsu is forced to pilot the Zeorymer, Masaki's memories start to take control of his body during his combats against the pilots of the Hau Dragon. During these fights, Masaki exploits their genetically designed emotional flaws to happily kill them without caring about the civilians in the crossfire. After taking near-complete control over Masato's body, Masaki stops to pilot the Zeorymer and tries to rape a female creation and tells her about his plans to allow the vengeful Hau Dragon to destroy the world, knowing that he will rule by using another clone inside the organization if they win.
  • Happiness: Masami Sakurane became fascinated by vampires when one attacked his sister. Seeking to become one himself, Sakurane murders animals, and then children to drink their blood. Manipulating Yukino Gosho to take possession of the vampire Yuki and leaving Gosho for dead after cutting her neck, Sakurane forms a cult called the Blood of Happiness where he continues his murders. When Gosho finds them, Sakurane horrifically tortures her and even forces her to stab Sudo, the man who loves her, when he tries to rescue her. Eventually having Yuki torn apart to eat his brain, Sakurane begins murdering his followers and tries to kill Gosho for her blood as well.
  • Happy Sugar Life: Even in a setting populated by characters existing at different levels of sanity, this despicable duo stands out as truly depraved:
    • The nameless manager of the Princess Imperial restaurant seemed at first to be a Benevolent Boss, but in actuality is a self-absorbed, vain woman who revels in the attention her employees give her. When Satou Matsuzaka joins the restaurant, the manager's ego is bruised upon overhearing Taiyo Mitsuboshi asking Satou out on a date. Luring Mitsuboshi into her office, the manager traps Mitsuboshi in her cabinet, raping him repeatedly for a week to force him to love her. She also tasks her employees with sabotaging Satou's work as punishment for her catching Mitsuboshi's interest. A woman obsessed with maintaining her "kingdom," the manager left a permanent impression on Mitsuboshi, being responsible for his pathological fear of older women.
    • The father of Asahi and Shio Kobe is a wrathful, short-tempered force of pure rage. Upon meeting a young Yuuna, he raped her out of blind anger at her accidentally bumping into him. Being forced to marry her after getting her pregnant, he relentlessly abused her and Asahi, raping the former repeatedly. Not caring one bit for his family, he leaves his family penniless after receiving his inheritance, only to become worse after spending it on himself. After his wife and daughter escaped the house, he subjects Asahi to five years of torturous abuse, going as far as to rip Asahi's fingernails off in a mixture of annoyance at his son's insolence, and a morbid curiosity at seeing how much pain Asahi could endure. Appearing as a shadowy entity in Asahi's subconscious, his father was a demon both figuratively and literally.
  • Heaven's Lost Property: Minos, the master of Synapse, refers to humans as "downers" and "bugs". He also beats Nymph whenever she fails her orders (or when he feels like it) and constantly threatens to destroy her. It's likely that he also treats the other angeloids that way, threatening destruction if they don't provide entertainment for him. This "entertainment" includes such things as ordering Ikaros to annihilate the Tower of Babylon and the surrounding city, which would kill countless people, and placing a bomb around Nymph's neck, triggered to explode if she again failed to bring Ikaros back to Synapse. The worst personal and petty thing he did was probably the time he ordered Nymph to call on her pet bird and prove her loyalty to him by crushing it to death. After she did so, he stomped her face into the ground while laughing about how "That was pretty fun. I'll save scrapping you until next time." Nymph goes on to thank him for not destroying her, which in all those cases, can easily be interpreted as "Thank you for not destroying me today." He does all this while smiling evilly the entire time, and does these sorts of things after the series fully establishes that the angeloids have feelings and emotions despite their artificial natures. Both of the angeloids in question cry their hearts out after recalling what they were ordered to do. The sections that have him in it are when the plot shows its dark and serious side.
  • Heavy Metal L-Gaim: Emperor Oldna Poseidal built the forces of the Poseidal Empire until he launched a brutal campaign of conquest and extermination to enslave or destroy all in his path. Exterminating his old enemies the Yaman Clan, save for a few members, Poseidal sets up a brutal dictatorship, using his former lover as a proxy Poseidal by brainwashing her and having her commit atrocities in his name, with torture, murder and extermination being commonplace. Taking the identity of Arms Dealer Amandara Kamandara, Poseidal supplies weapons to both sides to keep the conflict going, making it even bloodier, so he can remain in power. When he reveals himself at the end, Poseidal gleefully attempts to annihilate all rebel forces, uncaring that this will kill many of his own soldiers as well.
  • Heavy Object: Even in a world where war is the norm and most villains have some form of honor or loved one, there are others who instead go the extreme mile into evil:
    • The unnamed Alaskan Base Officer is a psychotic, cruel soldier serving the Faith Organization, and the first enemy Qwenthur and Havia face. Seeing Objects as superior to humans and refusing to accept harmony, the Officer starts a battle at the Legitimacy Kingdom Base, ignoring their white flag of peace. He sends out both his troops and his Object Prometheus, aka the Water Strider, into battle, causing a great deal of casualties. Capturing Milinda, Qwenthur, and Havia, the Officer plans to execute the latter two, choosing to brutally interrogate Milinda via hypnosis and electrodes, with no regards to how her personality will be affected, planning to hang her afterwards from the Object's guns as a display until she freezes to death to serve as a warning to his enemies. When his base is invaded by Frolaytia and her soldiers, the Officer refuses to surrender, gleefully attempting to shoot Milinda, Qwenthur, and Havia when they try to escape.
    • While his Light Novel counterpart was nothing special, the corrupt Legitimacy Kingdom Councillor Flide in the anime has more crimes to his name. When Qwenthur and Havia located the Gen 0.5 Object, Flide was quick to block them from getting reinforcements in hopes of getting them killed, while setting up the four super country alliance to fall into a trap that would result in it being wiped out (including his own soldiers). Later, when the 37th division came to remove him from office, he sent out the Exact Javelin, with an elite he secretly prepared, in an attempt to attack the Baby Magnum and treat its destruction as a training accident. After escaping imprisonment for his crimes, he resorted to blackmail to gain resources for his revenge, which involved using the Mirror of Truth program to brainwash Milinda into sending the Baby Magnum on a rampage in hopes of wiping out the 37th division along with Klondike in hopes of triggering a four-way struggle between the four super nations. The first target destroyed was his hideout, with him in it, alongside the means to disable the program's effects. While he claimed what he did was for the safety of his country, Flide was, in reality, a greedy and unethical man who wanted to stay in power with no regards for innocent lives lost, never viewing elites as human beings.
    • Prizewell City Slicker, from Volume 3 and the anime, is an Elite of the Legitimacy Kingdom’s 24th Mechanized Maintenance Battalion, and a raving language protectionist. A smug sadist, Prizewell seeks to rid the Legitimacy Kingdom of its foreign languages, as he feels they’re holding his people back, as well as reinstate the Legitimacy Kingdom's abolished slave class. Stealing Object data from the Information Alliance, he plans to slaughter numerous miners who were planning to defect to the Legitimacy Kingdom and manipulate the fallout to his advantage. When that fails, he uses the stolen data to create six dummy Objects that lead an attack on Victoria Island, a Legitimacy Kingdom immigrant city, having already destroyed the 37th's very own Snow Quake and Active Sledge Objects. Once his dummy Objects have been destroyed due to an oversight on his part, he tries to kill Qwenthur, seeing him as the one responsible for their destruction, before going after Milinda's Baby Magnum. While Prizewell claims to be preserving the Legitimacy Kingdom's official language, in reality, he’s nothing more than a xenophobic hypocrite who doesn't even care for his own soldiers.
    • Dimiksy Nikolaschka of the Legitimacy Kingdom's Volga District, from Volume 6, was born as a result of his father cheating on the queen. Driven by a desire to keep this fact from the world and ensure his enthronement, he decided to kill his other family members and those investigating his origins, while implanting false information in the lineage department. In the past, he staged a bombing to procure the Object, Assault Signal, which resulted in many deaths, including its intended Elite, Execelsyla, and triggering the wrath of its designer, Claire Whist. Later, he ordered fake Information Alliance Troops to assassinate the White Bears, the bodyguards of his sister, Stavia, his final target, with a bombing. One day, he ordered his terrorists to bomb Stavia's hiding place, prompting her maid, Mikfa, to escape with her to Lexpop, where an ambush resulted in Mikfa being taken hostage as a means to make Stavia use the Assault Signal to fight Dimiksy in his Object, Broad Sky Saber, with the latter hoping to kill her after winning the Royal Duel and savoring her fear. When the Forrest Roller Object and the White Bears (having operated under the Unicorn alias) intervene, Dimiksy fired a laser to destroy the Forest Roller and another that almost killed the White Bears in an attempt to protect his object's weak point. He then finally aims a third laser at the float Havia, Mikfa, and Qwenthur were on, hoping to kill them.
    • Acres Kiss-of-Rose, aka Azathoth, from Volume 10, is the CEO of Salem Logistics, one of the 7th Cores ruling the Capitalist Corporation, and the one behind Nyarlathotep 's questionable actions throughout the story. Formerly a Capitalist Corporation spy, he formed the secret group Outer Gods to make life easier for his fellow spies. Becoming a CEO for Salem Logistics, he abandoned his old lifestyle and friends to indulge in his newfound wealth and status. Creating the Silver Key instant delivery system, Acres refuses to use jets to deliver packages, seeing them as a waste of money. Wanting to use the Panama Canal as a transportation route, he orders an attack on the nearby, safe Soberania District, where many innocents are killed—including Nyarlathotep's wife and son—turning the entire district into a literal Hell on Earth, all while claiming to be wiping out terrorist training camps, later doing the same thing to the Indian Ocean. Hearing news of the Gigant Hustler, he has two of his indestructible Objects compete, seeing the event as a trade show meant to showcase the power of his Objects. With one of his Objects destroyed and his reputation ruined, Acres plans on staging a fake large-scale attack to regain some respect.
    • Flag Eggnog, the first prince of the Legitimacy Kingdom's Warta District, from Volume 11, is a loud-mouthed miscreant widely despised by his people due to his rampant gaffes, which usually prompts him to start a war to cover it up. When the Colorful Vanilla Drug is reported to have resulted in a war, he claims the drug wars are fake and are just fabricated by conspiracy theorists to blame the government, which only served to call for his resignation. In the past, he exploited a century long conflict between the Winchell and Vanderbilt families for his own gain by engineering 21 recent civil wars to cover the same sort of gaffes he made. In the present, he arranged Azureyfear Winchell to massacre Lady Vanderbilt and over 100,000 people aboard the LK Ship Rose & Lily, which he also happens to be on. He also collaborated with the Information Alliance's Martini Sisters to gain and exploit the information on the two families to manipulate an even bigger conflict to cover another gaffe. Finally, when things start going downhill for him, Flag drew a gun and attempted to put Lady Vanderbilt, his Information Alliance Contact, the military, the press, and everyone who dared mock him to the slaughter. Although he claimed his uncontrollable gaffes and war cover ups were beneficial to his country, he's nothing more than an incompetent, cowardly, and deluded traitor with an elitist viewpoint, who will bribe or kill anyone when things don't go his way.
  • Hellsing franchise:
    • Manga and OVA:
      • The Major, the psychotic leader of the "Last Battalion" of the Nazi remnant Millennium, is an unassuming, bespectacled, jovial fat little man who is defined by his belief that War Is Glorious. After surviving World War II, The Major consolidated his forces in South America, where they awaited their chance for one final, glorious combat. Acting behind the scenes, the Major had multiple humans turned into vampires, having them slaughter innocent people to slowly reveal himself to Hellsing. Finally taking center stage, the Major launched an attack on London, obliterating everything he saw and having his men slaughter every living thing in sight, including babies. The Major confesses there is no end goal; combat and war are their own end. The Major shows no hesitation in killing one of his own officers when he objects to the Major carelessly sacrificing their soldiers, and his ultimate goal is to die at the conclusion of his war, after having created one last great display of the carnage he so loves.
      • First Lieutenant Zorin Blitz is a bloodthirsty member of Millennium's Last Battalion. Ignoring her orders to gather intel on the Hellsing manor, Zorin launches an assault, psychically tormenting Seras and the Wild Geese before sending in her troops to tear the horrified defenders apart. While confronting Seras, Zorin uses her illusionary powers to make Seras relive the night her parents were murdered and her mother's corpse raped in front of her, while maiming Seras's defenseless physical body. When Pip tries to save Seras, Zorin uses her scythe to fatally wound him while his back is turned.
    • Anime series: Incognito is a sadomasochistic vampire who describes himself as living only for "total destruction". Working for his unseen boss, Incognito oversees the creation of the FREAK chip, which turns people into violent, unstable vampires. When the British air force come to investigate his castle, Incognito infects them with his chip, stripping them of their humanity and turning them into his unquestioning soldiers. Knowing a pacifistic vampire is monitoring his activities, Incognito attacks and devours the peaceful woman. Summoning a demon to destroy London, Incognito watches gleefully as it wreaks havoc on all in its path.
  • Hero Mask:
    • The man with the pseudonym of "Steven Martland" is the head of the LIVE corporation. Experimenting with the Masks on human test subjects with largely fatal results, Martland was also responsible for terrorist acts decades ago, including a bank bombing that killed multiple people, including the wife of police chief Richard. Intending to sell the masks as weapons, Martland has anyone who might expose him eliminated, unleashes the psychotic Grimm on the world and even attempts to have all the cops at a hospital massacred by his assassins, viewing all he does as "just a game".
    • The aforementioned Grimm, real name Jeremy Payne, is a deranged Serial Killer who previously based his killings on Grimms' Fairy Tales. Later arrested by James Blood, he was made into a guinea pig for the aforementioned Steven Martland's experiments. When Martland releases him and a few other test subjects, Grimm leads their breakout, killing multiple guards and blowing up the entire laboratory. Heading to SSC headquarters, he slits a cop's throat and gleefully massacres every officer there. A Mad Artist in his spare time, Grimm, unsatisfied in painting with his own blood, summons James to him so that he can kill him and use his blood to complete his masterpiece.
  • Hero Tales: Shimei is a sinister monster in both the manga and the anime.
  • Higanbana no Saku Yoru ni: Yoshihito Kanamori from "Mesomeso-san" (the first chapter) started as the homeroom teacher of Marie Moriya, a young girl bullied by her classmates. He used to defend her from the bullies, until the stress of his job got to him and he started to take his stress out on Marie. His supplementary lessons include molesting her and putting it on camera. When Marie gathered up enough courage to stand up to him, he strangles her to death, singing her a song about graduation from life to death while doing so, then dumps her corpse in the old school's septic tank. He also considered murdering other children when he thought that they were eavesdropping. When he encounters Marie's spirit in the restroom, he gives her a long "The Reason You Suck" Speech about her not going to the police to report on him while she was still alive and called her an imbecile who couldn't fend for herself. He then opens the door to one of the bathroom stalls, and upon finding that Marie has apparently physically manifested, he tries to strangle Marie a second time. When the deed was seemingly done, he proceeds to rape the corpse when he notices it was still there. While he claims that he did all this out of love for Marie, it's ultimately proven hollow.
  • Highlander: The Search for Vengeance: The ruthless Roman general Marcus Octavius earns Colin MacLeod's eternal enmity by massacring his people and crucifying Colin's wife Moya to see their home destroyed. With Rome's fall, Marcus vows to recreate it anew in his hunger for a world of order and beauty, working for countless evil forces throughout history including the Nazis themselves. When he takes over a future New York, Marcus unleashes a virus with an 80 percent kill rate to keep the population in line, and when they resist his rule with Colin, opts for some "creative brutality" in sending his forces to decimate the remaining population while planning on unleashing an even deadlier strain of the virus to kill every living thing in New York before he finally takes Colin's head.
  • High School DXD:
    • Freed Sellzen is an atheist exorcist who joined the Holy Church merely to hunt down and kill monsters. Upon being excommunicated, Freed loaned out his services to multiple villains to quench his blood thirst. First seen murdering one of Issei Hyodou's clients, Freed attempts to murder Issei himself, and when Asia Argento stops him, he tries to rape her, fleeing with her when Rias Gremory and her peerage overpower him. Working under the warmonger Kokabiel, Freed nearly beats Irina to death and taunts Kiba with the fact his swords were made from experiments that resulting in the deaths of Kiba's childhood friends. Finally willingly becoming a chimera for one last chance to kill the heroes, Freed even devours two of his own knights to further boost his strength.
    • Valper Galilei was formerly in charge of the Church's "Holy Sword Project", something he took advantage of by kidnapping dozens of children and performing heinous experiments on them, which proved fatal in many cases. When Galilei found many were incapable of wielding the Holy Sword, he merely had them all killed, leaving only Kiba alive. Galieli's actions were horrific enough to earn him excommunication by the Church, resulting in him allying with the Fallen Angel, Kokabiel, aiding him in his aims to create a colossal war. Facing Kiba while fighting with Kokabiel, Galilei tells him the children he killed were worthless and that Kiba should have died with them.
    • Diodora Astaroth attempts to bargain with Rias for Asia, and when rejected, kidnaps Asia and puts her in a device that drains her life force. Confronted by Rias and peerage, Diodora reveals he pretends to be injured to lure nuns, one of whom he attempted this on was Asia, to try and heal him so he can attack and force them to become his sex slaves to satisfy his depraved fetish. While fighting Issei, Diodora brags to Issei that he looks forward to raping Asia everyday while she cries his name. Finally defeated, Diodora still plans for Asia's life force to be drained out of pure spite even as he dies.
    • Rizevim Livan Lucifer, son of Lucifer and Lilith, is a hedonistic, wicked devil who believes Devils are meant to be beings of pure evil. To that end, he convinced his son to horribly abuse his own son Vali, using his son's wife as a hostage for that purpose. Rizevim then murdered his own son and abandoned Vali. Returning upon learning of Trihexa, the beast of the apocalypse, Rizevim seeks to use it to destroy the world and rule over what's left. Attacking the vampire race and also heaven to kill as much as he can in pursuit of the Grails to free Trihexa, Rizevim also abuses and tries to murder the gentle Asia Argento. When he is finally killed, Rizevim even uses his own soul as a means to unleash Trihexa, determined to take all creation to death with him.
  • Highschool of the Dead: Koichi Shido{u} first shows he's a man to fear when, during a zombie attack, a student he's guiding twists his ankle and begs Koichi’s for help. Koichi’s response was to kick him in the face, before gloating over the poor kid's impending death and his own survival by stating that the new world had no place for people that weak. Then he uses his position as a teacher to get himself elected leader of the surviving group. Koichi sets out to make himself a cult leader, promoting sexual activity amongst the kids to make them loyal to Koichi. A student doesn't like the action going on in the "orgybus" and asks if he can just be dropped off at his house to see if his family is ok. Koichi and his group, who are at this point a cult, decide that the best way to grant his wish is to throw him out of the bus and let him be eaten. In a Zombie Apocalypse, Koichi stands out as more evil and vile than any walking corpse.
  • Hiuri: Soujin, consumed and defined by the desire to obtain the power of the Hiuri, willingly lets an Evil Spirit possess him and he slaughters the Kiriba Clan he was supposed to serve in a bloody coup d’état. He takes a young, highly skilled ninja named Soujiro and mutilates him by removing his arm and eye and forces him to be his Dragon, and renames him Kiriga. Soujin then orders hundreds of deaths all over Japan, leads the direct conflict of a former young Heiga Clan ninja named Korin with her old best friend Hime who is forced to kill her. And finally, to spite the Kiriba Clan for its failures, he engineers another civil war which ends with only one survivor.
  • Hohzuki Island: Kuwadate is the teacher on the seemingly Orphanage of Fear on a island in Japan. In the same chapter where he is introduced, he attempts to rape his co-worker Yukino. After she defended herself, Kuwadate accosted one of his preteen students and tried twice unsuccessfully to rape her. Kuwadate is by far the most vicious and dangerous of the teachers. When the same student who he tried to rape fall unconscious, Kuwadate tries to rape her again only to be stopped. When a child lies to protect his teammates, Kuwadate breaks his leg and leaves him alone in the wilderness. After he apparently dies while trying to kill the children, he reappears, trying to kill now both the children and his own coworkers. When The Reveal happens, Kuwadate ends up being the only actually evil teacher, lacking any redeeming qualities, and shows his heinousness by being as bad as the children see him.
  • Hollow Fields: Miss Eleanor Weaver is the principal of Hollow Fields academy. In the past, after she succumbed to an incurable illness, she began practicing forbidden science, and tries to corrupt other doctors to her side. When her husband found out, she then transferred his consciousness into a mechanical box while having his body destroyed. After becoming the principal for more than a hundred years and seeing the bodies of her subordinates—better known as Engineers—begin to deteriorate, Miss Weaver made a deal, where the students were unable to leave Hollow Fields after graduation, and anyone with the lowest scores would be sent into "The Windmill". It was soon revealed that the children that were sent to "The Windmill" are being experimented on, so that she could transfer the Engineers' consciousness into the children, and when that failed, they essentially lost their memories, becoming hordes of zombies. Due to the extreme impatience of the Engineers, Miss Weaver tries to eliminate both the Engineers and the children of Hollow Fields with Rocket Engines as a last resort. Motivated solely on increasing the reputation of the school more than anything else, Miss Weaver is the most depraved of all Engineers.
  • Hols: Prince of the Sun: The evil Ice Devil Grunwald is known for his lust for power and cruelty. When Hols was just a newborn, Grunwald arrived at his village and proceeded to destroy it by turning the people against once another and then destroying every human until none were left, save Hols's father and his infant son, who fled. In the present, Grunwald continues to terrorize a village by trying to starve them out and when Hols kills his pet pike that was preventing the village from fishing, Grunwald decides to get serious. Using his "sister" Hilda, whom he himself had orphaned, Grunwald tries to bait Hols and preys on Hilda's mind so Horus will be killed by the girl he cares about most. After this, Grunwald simply attempts to kill everyone in the village in a final assault.
  • Holyland: Yagi kidnaps the hero's love interest Mai, force-feeds her the drug True to get her into a state of severe addiction, and ties her up in a place where three of his henchmen might possibly rape her. He has the whole thing video-recorded and broadcast over the Internet via his cellular phone as a way to keep Yuu from fighting back while Yagi's thugs beat him to a pulp. Even his boss King doesn't sink this low.
  • Honkai Impact 3rd: Despite its lighthearted tone, Honkai Impact has its fair share of villains. However, these are the most irredeemable and monstrous ones, whether are they humans or Herrschers:
    • The 12th Herrscher, better known as Herrscher of the Erosion, is a condescending, self-aware virus who views living beings as nothing but toys for her to play with. Planning to create a plague kingdom for herself, she bodyjacks an innocent girl named Higokumaru while spreading a lethal plague that kills millions of people and results in Higokumaru's horrific execution by the scientists of Fire Moth Organization. Escaping from Higokumaru, the Herrscher hacks Fire Moth's nuclear missile while attacking the last bastion of humanity. Escaping from her confinement in the 15th century, Erosion kills one third of the population with The Black Death before being sealed by Kallen Kaslana. When she arrives at Japan, Erosion attempts to manipulate a village maiden named Yae Sakura while cursing her village to defend themselves with child sacrifices. Erosion basks on their agony before trying to slaughter them while possessing Yae. When the clone of Kallen, Theresa Apocalypse, is being defeated by another Herrscher, Erosion attempts to bite her throat while unconscious. It is revealed that she mentally tortures Yae, whom she orders to kill Theresa. Being sealed again, Erosion attempts to wreak havoc on the artificial world by turning all of the villagers of Yae village into zombies. After her defeat, Erosion bodyjacks her vessel again as a last resort to destroy humanity.
    • The Great Overseer of Schicksal is the first leader of Schicksal Organization. Initially presented as a benevolent figure helping several European princes create a feudal order and stop the Honkai in order to take back the lost lands that the latter conquered, the Overseer reveals his true power-hungry nature by performing experiments on innocent civilians to turn them into zombies or monsters and kickstarting a war with the Ming Empire. Losing the war, the Overseer extorts the money from poor civilians and allows his priests and aristocrats to abuse the population as they please. Attempting to start a war with the Ming Empire again, the Overseer opens the purple box that contains the aforementioned Herrscher of the Erosion, who started The Black Death.
  • How NOT to Summon a Demon Lord:
    • Keera L. Greenwood is the older brother of Shera and the prince of the Kingdom of Greenwood. He is known to be physically abusive towards Shera, while seeing her as nothing but a Sex Slave that he rightfully owns and can use to continue their bloodline. Eventually, Shera had enough of his mistreatment and ran away, leading to him obsessively trying to recapture her and bring her back. He has a complete disregard for life, not caring how many people he endangers to achieve his goals and believes the entire world exists to please him. This is shown when he callously declares war over the pettiest of reasons, or when he summons the Force Hydra (a dangerous and destructive beast) even though he had no means of controlling it. He's also shown to be incredibly racist to all races other than the Elves. When he finally recaptures Shera, he has her chained up and attempts to rape her while also putting her under mind control magic to make her desire to come back with him.
    • Paladin Saddler of the Church of Celestials is a twisted sadist behind a mask of pleasantry, Saddler butchers villages he suspects are "evil", killing them to the last man, woman and child. A torture enthusiast, Saddler is fond of attacking demihumans or anyone he so much as suspects of worshiping demons regardless of logic or justification, taking them and torturing them to death as a form of "purification" and justifying his beliefs under the notion that he is a god. When he captures Diablo's friend Rem, Saddler tries to torture her to death as well, his supposed righteousness nothing more than a mask for the twisted monster he truly is.
  • Hundred (anime): Vitaly Tynyanov was the lab director of the Warslan Research Facility where ill children were taken in to be vaccinated with Savage fluids. Many died in the process and, of those who lived, the injections continued. The remainders either went berserk and attacked each other or simply died out, leading Sakura Kirishima to be the only who survived the experiments. Feigning kindness to three former child slaves, Vitaly enlists them to capture the cores of Savages and Variable Stones so she could produce a biomechanical army of monsters; the siblings were ultimately pawns she cared little for, even going so far to use a device to force them to work against their will. During the siege on Little Garden, Vitaly meets her former lover Judar Harvey and reveals she committed all these atrocities to spite him, intending to bring all of Little Garden and what he stood for down. As she's dying, Judar expresses his appreciation for her contributions, but Vitaly smiles in cold satisfaction at how her horrific research served a purpose even in death.
  • Hydra, by Tetsuo Hara: Minister Usami is a corrupt Japanese official plotting to sell out his nation as long as he can benefit. Usami blackmails the hero Yomi into working for him by threatening Yomi's beloved sister Mamiko, while having Yomi assassinate his rivals. Usami's corruption runs even deeper, and it is revealed he intends to use biological weapons to wipe out half of Japan's population, starting with Tokyo, to make it easier for foreign powers to take over.
  • Ibitsu: The "Strange Lolita" is a Serial Killer implied to be a malevolent spirit. Having claimed enough victims to be known as an Urban Legend, the Lolita obsessively stalks men, tormenting them and murdering their loved ones before killing and implicating her victim as the perpetrator of a Murder-Suicide. Torturing a victim after butchering his family, she broke the man, making him always wear a filthy dress and eat garbage. After eliminating Kazuki's friends and family, the Lolita captures him and keeps him locked inside his house for days, mutilating him whenever he displeases her before finally killing and framing him too.
  • Ichi the Killer is a twisted manga, as these characters demonstrate:
    • Masao Kakihara, a twisted Combat Sadomasochist whose boss is murdered by the titular Ichi, begins a hunt for the mysterious assassin in his obsession to discover the ultimate pain. Kakihara participates in a number of murders of Yakuza and civilians alike and has no compunction allowing rape or torture to occur under his watch. Cold-Blooded Torture is his specialty, in fact, and he tortures one man by hanging him from multiple needles and hurling hot tempura oil over his bleeding back. Obsessed with the point where pain and pleasure meet, Kakihara terrifies all who meet him.
    • Kakihara’s Co-Dragons, Jiro and Saburo, brag that they've raped hundreds of women. Driven to outdo one another, they introduce themselves by asking a pair of lovers who the women preferred in bed. When the women give an answer, the offended twin viciously tortures and kills them. The two later abduct a prostitute after brutalizing her and rape her to get her pimp to talk. Despite Kakihara's orders not to kill them until he verifies their information, the two play a game to see who can hurt the two worse solely to prove who's better at causing pain. When one accidentally kills the pimp, the other kills the girl just to prove he can kill someone as well. After Ichi kills Jiro, Saburo is only angry because he wanted to kill his brother himself one day. He then proceeds to kill a man Kakihara tortured earlier and rapes and murders the girl with him, before killing her with a knife through her genitals.
  • Iczer:
    • Fight! Iczer-One: Big Gold is a powerful alien android who, along with Iczer-1, is one half of a machine created to grant wishes. Granting the wish of the Cthulhu race's matriarch to save her dying race, Gold ends up turning her species into a fascist leadership with her as their ruler, forcing the matriarch to be her slave and renaming her Sir Violet. Desiring to Take Over the World and eradicate humanity, Gold sends parasitic aliens that mutate and control people from the inside, turning the world into an apocalyptic wasteland, with Nagisa's parents becoming victims themselves. When Sir Violet's plans to destroy Iczer-1 and Nagisa all end up failing, Gold kills her and decides to kill the duo herself. Destroying a human military spaceship, Gold laughs as she witnesses the destruction she's caused on earth, later attempting to kill Iczer-1 herself.
    • Iczer Reborn: Neos Gold is the monstrous "daughter" of Big Gold herself. Fleeing to Earth to escape Iczer 1, Neos proceeds to attack entire cities and military bases to force Earth to recognize her as a god and use them to bait Iczer into a trap. Routinely sending out her minions to kill as many as possible, Neos also coldly executes them for any failing her before resurrecting the fallen Iczer 2 to fight her battles for her. Upon the finale, Neos Gold plans to use earth as a power source and uses countless humans as human shields before planning to kill the Iczers and annihilate Earth anyways.
    • (Iczer Girl) Iczelion: The wicked sibling team of Cross and Chaos, androids created by Big Gold, travel the galaxy with their forces, the Geas, murdering and destroying all they find. They strip a planet of resources, killing everything there and then hunt down the planet's defenders, the Iczelion, before murdering them, the OVA starting with Cross gleefully torturing an Iczelion to death after wiping out all life on her world. Arriving on earth, Chaos dispatches his strongest soldiers, the Voids, to wipe out entire cities and kill as many people as possible while Cross targets the new Iczelion, gleefully trying to murder her innocent civilian friends and kill and torture as many innocents as she can.
  • Ikki Tousen:
    • Chuuei Toutaku, the Big Bad of season 1, is the leader of Rakuyo Academy, and the descendant of Dong Zhou. Having participated in the Big Fighting Tournament as a freshman, he killed numerous fighters, claiming control over many Kanto high schools. Sending Shishi Ouin to destroy Nanyo Academy from the inside, he later orders Ryofu to kill him after he tried assassinating him. Doing whatever he can to prevent his destined death, he commences the Big Fighting Tournament to have Hakafu Sonsaku killed, even banning finals so that no other fighter can kill him and take away his control over the schools. Knowing that Ryofu will be the cause of his death, he gives a deadly curse to Hakafu and has her show up at his place to kill Ryofu, promising to murder Ryomou if she doesn't comply. When Ryofu kills him, he cures Hakafu's body before implanting his soul into her, later taking control of her and attempting to gleefully murder Ouin and all of Hakafu's friends.
    • Dragon Destiny & Xtreme Xecutor (anime seasons 2 & 4): Chuutatsu Shibai, the descendant of Sima Yi, is the selfish, paraplegic chief strategist for Kyosho Academy. Desiring to bring about a new age of war and take over Kanto, Shibai makes a deal with the spirits of ancient fighters to acquire the Dragon Jade and use it to help them possess their descendants. Manipulating everyone to further her goals, Shibai later takes Kan'u prisoner, allowing her men to torture her for information on the Dragon Jade's location. Arranging Sousou to become possessed by his inner dragon, she has him kill Hakafu and Kakouton, later leading a battle against Seito Academy for the Dragon Jade. Not caring for the loss of her fighters, she attempts to murder the Seito survivors before strangling Gentoku for the Dragon Jade. With her dying breath, Shibai uses the Dragon Jade to awaken Sousou and Gentoku's inner dragons and have them kill everyone. Returning from the dead as Kentei, he plans a fake tournament where the fighters' blood will be used to resurrect thousands of corpses to serve as his army, arranging to have them possessed with the ancient fighters' spirits and conquer Kanto. Brainwashing Kan'u into obeying his orders, he forces her to fight Ryomou, attempting to kill them both when Kan'u snaps out of it.
  • Innocent:
    • Subyss is a Torture Technician attached to the Parisian Parliament who views suffering as an art form and admittedly sees himself as the mirror image of Charles-Henri Sanson. The latest member of a lineage consisting of professional torturers, Subyss takes sadistic pride in causing pain and uses everything at his disposal to break the human body, including strappado and impaling a man through the chin before forcing him to ingest melted sulfur. When Subyss is called to extract information from the benevolent Robert-François Damiens, he horribly tortures the man for two entire months to make him confess to false accusations, comparing his situation to a "dansieur leaping in the depths of Hell" and almost killing him before the day of his execution arrived. Wasting no time in getting drunk to distract himself from the fact that he was fired, Subyss comes back to his senses only after hearing Robert's screams.
    • Count De Luxe is an utterly loathsome member of the Royal Court with a fervent hatred for commoners. Introduced kicking a child worker in the face for trying to eat bread, De Luxe develops a rivalry with the good-hearted Alain, whom he mocks for being an individual with a mixed race. Discovering that Alain intended to open a school for any children regardless of status or assets, De Luxe burned the school with the students inside, killing all of them. Confessing to have started the fire, De Luxe cowardly executes Alain even after the latter had spared him and has him incriminated as a rebel who wished to overthrow the country, assuming the position of a "hero who saved France" while personally refusing to accept responsibility for his crimes, claiming that the "cries and screams of those maggots burning alive were cries of joy".
  • The Innocents Children's Crusade: In this manga by Furuya Usamaru, Sir Hugo at first seems an affable member of The Knights Templar, eager to help the Children's Crusade in their goal. It is revealed Hugo is paying townspeople to fake miracles to enhance the Crusade's reputation and earn more money for himself. When the kids cut ties with him, Hugo has bandits attack them for the money, killing multiple children. Hugo then convinces three of the boys to join him, raping them as an "initiation" and having them sway others to his side. When one boy resists Hugo's attempted rape, Hugo beats him and has him thrown out of the castle where the boy commits suicide in shame. Hugo then has his initial three recruits fight to the death for his entertainment in a "rite of courage" before he is ambushed by the young Crusaders Nicolas and Guy, having the audacity to plead for his life by claiming they were nothing before him just before Nicolas beheads him.
  • InuYasha: Naraku is a merciless half-demon who, desiring to become a full demon, will stop at nothing to obtain the Shikon Jewel, the object that can give him this power. The lengths he goes to cause nothing short of tragedy in every single one of the main cast's lives, something Naraku does not care about. As the series goes on, Naraku even resurrects a group of mercenaries with policies that made them little better than serial killers, just to keep his opponents distracted from his true goals. He happily has his minions kill innocent villagers just to lure the protagonists to him. Excelling at manipulating others, Naraku kills Kikyo, a love interest of both Inuyasha and the man his demonic body was formed from, to prove to himself that he's incapable of harboring tender feelings towards her. Not satisfied with simply showing this to himself, Naraku went a step further by destroying Inuyasha and Kikyo's relationship, leading to 50 years of mistrust between the once-loving couple. Keeping his own minions in check by the threat that they are created from his magic and he holds their hearts, which he proves good on if they disobey him, Naraku's deeds clearly prove what he hoped to learn from his actions with Kikyo, that he is utterly devoid of compassion.
  • Inuyashiki: Samejima, from the Yakuza Arc, is a Yakuza boss who regularly abducts, drugs, rapes, and kills women. He is first introduced leering over the corpse of a woman he violated before forcing one of his underlings to give him a blow job. His next target, a woman named Fumino, manages to escape him before he could do anything to her. Determined to get Fumino, he tracks down her mother, who it is heavily implied he tortured to get Fumino's whereabouts before killing her. He orders his men to grab Fumino while he strangles her fiancé, Satoru, to death (but is thankfully revived by Inuyashiki) and seemingly kills Inuyashiki when he tries to stop him. Before Inuyashiki confronts him, it's heavily implied that he got what he wanted from Fumino. Samejima orders his men to shoot Inuyashiki in retaliation for beating him up. Even Inuyashiki, who loves nothing more than helping others, decides that Samejima is beyond redemption, blinding and crippling him.
  • Irresponsible Captain Tylor: Prime Minister Naku Ra Wang, the chief advisor for Empress Azalyn, seeks to become emperor of the Raalgon Empire. Using the death of her father, he manipulates Azalyn into declaring the United Planet Space Force as an enemy, resulting in thousands of deaths on both sides. Feeling impatient, Wang tries to assassinate Azalyn by setting off an explosive in her room, which places Tylor into a coma. After Azalyn returns from the Soyokaze, Wang manipulates her and the council into commencing an attack on the UPSF headquarters, planning to win the battle, start a war with the UPSF, and increase his reputation as the war's chief proponent. Six months after his plan fails, Wang tries to start another war with the UPSF by hiring both Raalgon terrorists to cause destruction on Earth, and a mysterious third party to destroy Azalyn's home planet in order to stir up both sides. Once the war starts, Wang launches a coup on the Melva, holding Azalyn captive, seizing the throne, and declaring a full-scale attack on the UPSF Spacefleet.
  • I"s: The Marionette King (Samejima) is a senior in Ichitaka and Iori's high school. When Iori's photo shoot makes her well-known, he's at the forefront of the other seniors who gather in front of the window of her acting club and sexually harass her before starting to chant her to strip, emotionally damaging her. After that, he organizes a fake photoshoot of the girl students in order to secretly film them while they're changing, with Iori being the real target. When she notices the hidden camera and tries to get out, she's almost raped by his underlings. After the Marionette King and other seniors are expelled from the school, he then concocts an elaborate plan that lures Iori into a dilapidated building where she is trapped by him and his gang with the intention of raping her as revenge for getting him expelled. When this plot is foiled by Ichitaka and Jun he vanishes from the story only to reappear in the last couple of volumes where under his internet moniker "Marionette King" he sends messages declaring Iori as his "puppet" and his intention to rape and kill her and sell the Snuff Film of it. When Ichitaka fights him at the end the Marionette King has been driven further insane by drug use. Even when he's defeated, the Marionette King can only think about raping and killing Iori. The only reason that he stalked Iori was because he was obsessed with her and wanted revenge for his expulsion from school. He blamed everyone but himself for his self-inflicted trouble and was unrepentant to the end.
  • Jackals: Vampire Franco is a portly little man who ends up as the series's ultimate villain. The head of "The Bat", the information network of the Gabriella gang, Franco double-crosses his boss Don Salieri and has him tortured to death, along with purging many of his supporters and manipulating the brutal gang war between Gabriella and their rivals Tennouren to claim lives on both sides. In the past, Franco further manipulated one infamous Jackal into attempting to assassinate the greatest Jackal of all, Grim Reaper Roxy, by holding the man's wife and son as hostages. Seeking to escape Cicero City, Franco arranges for the military to begin shelling the place to wipe out the gangs with no regard for civilian casualties, and when Alligator Nichol tries to stop him, Franco reveals he has Nichol's love interest as a hostage by a vicious rapist, before attempting to kill Nichol and his allies.
  • Jack and the Witch: Queen Auriana is an evil witch and the ruler of her domain. Auriana abducts children and transforms them into creatures known as harpies note  to serve as her slaves, seeking to extend her rule throughout her realm. The children themselves live in constant fear of Auriana, being forced to kidnap more children to serve her. Those who fail are banished to the Cavern of Eternal Ice, where they will surely freeze to death. When one of the harpies, Allegra, fails to capture Jack, Auriana exiles her to the ice caverns, taking the time to taunt her for not being human. She then captures Jack's friends and attempts to force them to watch as Jack and Allegra freeze to death in the ice caverns. When Jack rescues Allegra, Auriana destroys the caverns and brutally attacks the two children as they attempt to flee, nearly killing them. When her globe, the source of her powers, is destroyed, Auriana attempts to blow up the castle with everyone inside it, just to spite Jack.
  • Jinki:Extend: Kalis/Karis Norman/Nolman.
    • In the anime, Kalis manages to establish himself as one of these in less than ten minutes of screen time, completely altering the tone of an otherwise tame and derivative show with his very presence. Disguising himself as thirteen-year-old Satsuki's older brother, he gets close to her, slashes her with his scythe, brutalizes her, and then rapes her, ranting the entire time about how she should "be good for her big brother". When the rest of the Angel team arrive, Kalis tries to escape, taking Satsuki with him, and gloating about how he's going to continue "loving her like a brother". When Akao attempts to stop him, Kalis tries to kill her with one hand, while continuing to grope Satsuki with the other throughout the fight, snickering about how easy it was to do this to her. His actions leave Satsuki completely shattered, and of all the people in Shiva's employ he's easily the most despicable.
    • Kalis is even worse in the manga, where he's essentially a Rapist For Hire. Employed by de facto Big Bad Shiva for the purpose of breaking potential Angel pilots, Kalis assaults and rapes one of the main girls, driving her into a Heroic BSoD. When she refuses to scream for him, Kalis has a minor Freak Out! ("You boring bitch, you won't even scream!") and starts cutting her up with his scythe; when the rest of Angel team interferes, he tries to kill them all. Reappearing at the end of the volume, Kalis ambushes Satsuki and tries to rape her as well, only to be halted by the male lead. Returning again in volume three, Kalis tries to apply his craft to the entire Angel team, via a giant, fluid spraying, tentacle rape machine. A raving misogynist, who gets off on the psychological damage he inflicts as much as the actual rape, and thoroughly warps the tone of the story with every appearance, Kalis is never less than absolutely disgusting.
  • Jubei Yagyu Dies:
    • Lord Ieyasu Tokugawa is the ruler of an alternate timeline, in an Edo Period where Shinobi rule. Once the twin brother of the true Ieyasu and raised as a shinobi named Kagemaru, the Shinobi Ieyasu would overthrow his brother and then subjugate Japan with futuristic weaponry, massacring even women and children of rival clans. He forms a nightmarish dystopia where only Shinobi are even seen as human beings, everyone else are left to starve, made into slaves, killed at the whim of the Shinobi and should any Shinobi die a hundred civilians are summarily executed in retribution. When he learns Jubei Yagyu may hold the key to his defeat, Ieyasu sends his forces after Jubei with no regard for collateral damage, not even caring when his own son and grandson are put at risk or made casualties. Dedicated to preserving his inhumane rule at any cost, Ieyasu is the worst the Shinobi age has to offer.
    • Lord Hidetada Tokugawa is the worst member of Ieyasu's Iga Ten. Promised to become the next Shogun should he bring Ieyasu Jubei Yagyu's head, he bombs Yagyu village, killing plenty of people—including children—ordering that no one be left alive. Making a getaway once his plans start failing, he drops more bombs onto the village, not caring when his own ninjas are killed in the explosions. Despising his son Iemitsu, he doesn't care when he loses an eye to Jubei, instead laughing at his pain. Getting into a fight with Jubei, he has needles rain from the sky that injure Ja'ami and kill more of his own ninjas.
  • Junk: Record of the Last Hero: Suzuki, the "Red JUNK" user, is by far the most wicked character in this Champion RED shonen manga. Once a jobless bum, Suzuki quickly became power-mad once given his own " JUNK " Sentai-esque super-suit, and immediately began brutally killing and maiming people for minor offenses, claiming it was in the name of "justice". Showing his true colors after destroying a helicopter and its crew for annoying him, Suzuki first hunts down and tries to kill two defenseless women after slicing off the top half of the hotel they reside in, and later massacres over 170 people who used to be his co-workers, stating that it's their fault he lost his job. Suzuki then became an assassin for hire who would kill anyone he was paid to, then murder his own employers once the job was done, regardless of innocence or guilt. Even when overpowered by another JUNK user, Suzuki kills numerous innocents during his attempt to keep his suit for himself. A perfect mixture of laziness, greed, and sadism, Suzuki stood out even in this morally grey story as a truly monstrous individual.
  • Jushin Liger manga:
    • Empress Zara, the main villain for much of the story, is a vicious fanatic dedicated to restoring Emperor Drago from his prison. Attacking Hokkaido, Zara has countless innocents slaughtered, demanding her followers "bring her human suffering" before deciding to attack Tokyo to wipe it off the face of the map and kill every human there. Zara repeatedly spends the series ordering horrific massacres and atrocities, intending on utterly exterminating humanity to revive Drago and see the victory of evil itself.
    • Emperor Drago, the true Big Bad, previously wiped out almost all life on Earth. A pure evil monster, Drago celebrates his revival by killing Zara, gloating she should feel proud to feed his new strength, before deciding to exterminate all that lives to empower himself. Drago then faces off with Liger, gloating as he attempts to bring an apocalypse in which there will be no survivors, from where Drago will just move on to enslave and kill all else in his path.
  • Juushinki Pandora: David Kim, aka Mr. Gold, the owner of a fast food chain and the son of a disgraced businessman, is behind most of the B.R.A.I. attacks in Neo Xianglong. Driven by resentment of his father bowing down to the mayor of Neo Xianglong, Cecil Sue, and her clan, Mr. Gold dedicated himself to destroy anything Cecil had protected by sending B.R.A.I. to destroy her city while aligning himself with the Black Market and an opposition group of the mayor. His worst act is when he attempts to boil the population in Neo Xianglong to death by heating the water supply of Neo Xianglong. He also controlled the Centipede B.R.A.I. as a last resort to destroy Cecil's city out of spite by desecrating his own family graves, and when Cecil tries to stop him, Mr. Gold then tries to make her watch as her city is destroyed in front of her.

    K – N 
  • K: The Colorless King is a Body Swapping maniac who sparked a conflict between two powerful groups, HOMRA and Sector 4, as part of a gambit to absorb the powers of their super-powered leaders, the other "Colored Kings". He murdered a pacifist member of the HOMRA gang and switched bodies with Shiro/Adolf Weissman to leave him to be blamed for the killing. Taking the reclusive Weissman's blimp as a hideout, The Colorless King waits until suspicions are arisen about him, letting numerous characters try to approach the blimp to question him and then laughs giddily while he blows it up, the immortal body he's inhabiting keeping him safe from harm. Trying to break the Red King of HOMRA's composure so he can invade his mind and steal his powers, The Colorless King taunts him, admitting to having killed one of his gang members and threatening to rape Anna, a child in his gang. Eventually causing enough tension between HOMRA and Sector 4 that they engage in all-out combat, The Colorless King possesses a Sector 4 member and tries to kill the defenseless Anna before possessing a high school girl and friend of Shiro to try and get him to lower his guard. Insane and cruel, The Colorless King hops from body to body, caring nothing for the safety of the people he uses as long as he gets the power he seeks.
  • Kagerou Project: The Snake of Clearing Eyes/Wide-Open Eyes Snake is the Big Bad of the franchise. The only one of Azami's snakes to develop consciousness, the Snake manipulates Azami into freeing him and the other snakes, escaping to the real world and possessing Kenijrou Tateyama. Promising to reunite Kenijrou with his dead wife but never fulfilling it so he can exist forever, the Snake arranges for the murders of his students, tricking Kenijrou's daughter into killing herself when she discovers his plan. Forcing the girl's stepbrother to help him cover it up, the Snake goes on to carry out his murder spree uninterrupted. Possessing Konoha to try and kill the protagonists for discovering his plan, the Snake forces the timeline to be reset indefinitely, killing his victims over and over again to remain immortal and satisfy his sadism while leaving the whole world locked in a "Groundhog Day" Loop.
  • Kaiji: Kazutaka Hyōdō, a wealthy socialite and president of the financial consulting firm Teiai, is a man driven mad by money and power whose only enjoyment in life is to see the lower classes of society struggle for their lives and money in illegal gambling tournaments. In Part 1, Hyōdō has a group of his debtors gamble in a ship, collecting badges from each other. Those who lose all their badges are transferred to an underground mine where they are forced to work for their money in horrible conditions, most of them dying due to work-related injuries or breathing problems caused by the smoke. In Part 2, Hyōdō forces another group of debtors to walk on a narrow plank ten meters up the air, and to win, they have to push down others, breaking their bones while doing so. After Kaiji and a handful of others manage to walk on the other side, they are then forced on a similar plank which is electrified and hundreds of meters up the air. Kaiji, being the sole survivor of the second part, is then obliged to duel against Hyōdō's right-hand man, Yukio Tonegawa, and choose either his eye or eardrum as his stake. After Kaiji wins, Hyōdō proves how cruel he is to his subordinates, forcing Tonegawa to kneel for a minute on a scalding platform. Briefly appearing in Part 3, Hyōdō is seen drinking the blood of his victims, while treating his other subordinates with similar cruelty. A truly despicable old man, Hyōdō is the living incarnate of greed and cruelty in a world where people are willingly to do anything in order to pay back their debts.
  • Kaitou Joker (anime version): Professor Clover, introduced as a mere treasure-hunting burglar, reveals himself to be insatiable greed personified in his second appearance. Kidnapping and posing as a kingdom’s general to manipulate the land’s princess, he seeks to activate a weapon which would destroy the city, just to get an orb to power up his staff. To gain a rare treasure, Clover murdered the parents of two main characters, leading to both going through horrific childhoods following being orphaned. Previously working as the agent of an unknown federation, Clover again worked to steal another treasure, hoping to use its power to threaten the citizens of the nation containing it to submit to them lest he wipe them from the face of the earth. Manipulative and cruel, Clover corrupts a girl with time-bending powers, using her to steal more treasure and cause more havoc. When the heroes try to save her from his clutches, Clover threatens to murder her with acid, rather than lose her. Clover stands out in a usually-lighthearted series.
  • Kamui Den: The lord of the Hioki Domain in the first series oppresses the townsfolk, starves and brutalizes them, kills any who resist his rule, rapes one of his maids and after she drowns herself spitefully has her corpse chopped into pieces before sending her corpse back bundled in rotting animal meat.
  • Kaze no Stigma:
    • Michael Harley is a member of the Stars of Sagacity who was sent to kill Kazuma Yagami. Upon meeting Misao Oogami, he exploits her desire to avenge her fallen brother by having her kill hundreds of innocent people slowly draining their Yoki; among those victims are Misao's own family members. When they gather more than enough Yoki, Michael reveals his true motives to Misao of using the Yoki to turn her into a medium, saying that he did not care about avenging her brother; this drives Misao mad with remorse. Michael then proceeds to forcibly transform Misao into a dragon and send her to kill Kazuma, while threatening him that if he kills the dragon, he would also be killing Misao.
    • Bernhardt Rhodes is Kazuma's Arch-Enemy and the leader of Armagest, the organization responsible for sacrificing Kazuma's First Love, Tsui Ling, to the demon king Belial. He then proceeds to use the remains of Tsui Ling to create a clone called Lapis using her to psychologically torment Kazuma, and later has Lapis destroy an entire building of innocents while escaping Kazuma. He also created "Pandemonium", where he would send demons to inhabit numerous teenagers, empowering them and having them fight each other to the death. He would then forcibly turn the survivors into demons, before sacrificing them to Belial in hopes of releasing him. While seemingly wanting to avenge the death of master, Erwin Leszaa, it is soon revealed that Bernhardt doesn't really care about Erwin and is tormenting Kazuma for his own amusement and plans to use Belial to destroy him, his city, and everyone he holds dear.
  • Kekkaishi: Of the villains the Kekkaishi organization has encountered, here are the most monstrous:
    • Kaguro is the most sadistic and depraved member of the Kokuburou. Prior to joining the Kokuburou, he was known as Genichiro Kuroda, and massacred several swordsmen in order to become stronger. After joining, Kagurou and his men attempt to negotiate with the powerful exorcists who protect Karasumori, known as Kekkaishi, by intimidating the children and injuring some of the school staff in order to make them surrender territory to Kokuburou. When the Kekkaishi refuse to surrender, Kagurou then brutally wounds one of the Kekkaishi, Gen Shishio, and then kills some of his subordinates who took one of the Kekkaishi as a hostage during the fight against the Kekkaishi because their "lack of aesthetic", falsifying their death reports after the battle is done. During the second fight, he then taunts and brutally kills Gen Shishio after Gen rejects his offers, and after returning to the Kokuburou's lair, he then massacres the the minions of the scientist, Aihi, and then proceeds to taunt her about her relationship with humans before impaling her and leaving her to die. In the end, Kagurou is an irredeemable beast of a man who loves to torture and kill his enemies in order to gain more power.
    • Mudou is the former member of the Urukai who initially appears as a benevolent mentor of one of the Urukai members, Masamori Sumimura. However, he reveals himself to be something worse after leaving his position. Seeking an ultimate power in order to achieve perfection, he slaughters some of the young recruits in the Urukai by stealing their souls with his balls and then proceeds to do the same in the present in one of the God's Realm. After he went into said realm, he then proceeded to massacre the God's servant and then tries to find the master of the land, Tan'yuu, while destroying everything in his path. After Tan'yuu is captured by Mudou, Mudou then began to mentally torture him under the pretense of judging him for his sins, while revealing that he wants to consume Tan'yuu's soul and admitting himself that he had been killing countless innocent humans. Seemingly entertained when Masamori and his younger brother, Yoshimori, argued with each other, Mudou then gives Masamori a Sadistic Choice regarding if he or Yoshimori will live. Due to Mudou's horrible actions, Tan'yuu forces himself to reset his world in order to restore the damages that Mudou has done to his world.
    • Ichirou Ougi, one of the twelve higher-ups from the Urukai, comes from a prestigious family who controls wind techniques. Prior to the main story, he and his younger brothers were envious of their youngest brother's inheritance, which resulted on Ichirou uses a body-combining spell towards his younger brothers. After joining the Urukai, Ichirou then devises a scheme behind the scenes, such as conspiring with the Kokuburou by giving them some information, and when one of the Urukai members, Masamori Sumimura, gets promoted, Ichirou kidnaps some children by giving them some boxes, resulting in them them getting replaced by Ayakashi that attack the Night Troops. In addition, he is also responsible for the revival of a huge and destructive Ayakashi known as the Kurokabuto. After being found out by one of the members of the Urukai, Ichirou then tries to decapitate said member, and changes his strategy to attack the Holyland across Japan, known as Shinyuuchi, in order to incriminate Masamori and his family by using a picture of his mother. It was revealed that he was horribly abusive towards one of his younger brothers, Rokurou, and when Ichirou got wounded during the fight against Masamori, he then transfers his wounds towards Rokurou, causing the latter physical pain.
    • Yumeji Hisaomi, better known as Tsukihisa Oumi, is one of the members of the twelve higher-ups of the Urukai and is the fake younger brother of Urukai's leader, Nichinaga Oumi. During his meeting with Nichinaga and his wife in the past, Yumeji then brainwashed Nichinaga by turning him into his loyal older brother and turns his wife into his personal log-keeper. After the two brothers founded the Urukai together, he then pioneered a brutal brainwashing program, and it was also revealed that he and his brother body-jacked other people's bodies for centuries in order to survive. After Nichinaga recovers from Yumeji's mind control and rebels against Yumeji, the two go to war against each other. In order to win the war, Yumeji destroyed several Shinyuuchi across Japan and orders his subordinates to take an entire town as a hostage during the assault on Karasumori. When Masamori becomes suspicious towards Yumeji, the latter then tries to brainwash Masamori, and after he was killed by one of Nichinaga's subordinates, he then body-jacked said subordinate and then impaled Nichinaga. He then taunts Nichinaga about nothing will change after Masamori reforms the Urukai and then tries to bring Nichinaga's body as a proof of the rebellion. Despite his polite facade towards other people, Yumeji is a person who tries to satiate his pride and ego to win a petty rivalry against his younger brother.
  • Kenichi: The Mightiest Disciple: YAMI Master Silcardo Jenazad couldn't stand lasting peace, so 20 years ago he incited a civil war, which he's still actively maintaining, in his own country. During said civil war, one of Jenazad's servants informs him that the men, who joined his side, because they were devoted to his cause, will die in large numbers if they persist in the current segment of the conflict. Jenazad's response: "So?" For his research purposes, Jenazad causes his past students to fight and kill each other. He causes an avalanche to try to kill his own modern-day YOMI student. Jenazad also almost manages to trick fellow YAMI member Akira Hongo into killing the titular protagonist, and kidnaps and brainwashes Furinji Miu into becoming his newest cold-blooded disciple. He later supervises the brainwashed Miu's battle against Kenichi, with the expressed purpose of getting her to kill Kenichi, following which her mental state will be completely subject to Jenazad's manipulation and the brainwashing process to convert her into his thinking will be complete. Jenazad detests peace so much he is willing to kill his country's deposed princess (the sister of the aforementioned "dead" YOMI disciple), who is all for restoring peace to the nation.
  • Key the Metal Idol: Jinsaku Ajo is a former Japanese Imperial Army officer turned Corrupt Corporate Executive. He forcibly extracts the object-animating gel out of humans and has no care for human lives except as resources, eliminating anyone who stands in his way regardless of them being harmless civilians, children, or elderly and condemning others to a Fate Worse than Death just to feed his monomaniacal obsession with creating working Ridiculously Human Robots. He uses rock star Miho Utsuse in his experiments, and the "Miho" seen on stage is a robot that Miho controls from a distance a process which is extremely strenuous to Miho's health. He also feels up the Robot Girl version of Miho, cutting her artificial skin, while wearing a leather "robot" mask and calling her his "son".
  • Keyman: The Hand of Judgement:
    • Butler is the true orchestrator of the horrible events that take place throughout Lockville City. In actuality The Devil himself, Butler was cast down to Earth after a failed coup against God, and now sows seeds of destruction and despair throughout humanity for being weak insects in his eyes. After corrupting the Violet bloodline into becoming his fanatical cult who butcher infants in his name, Butler uses Franck Violet to bring Beastman-trafficking rings of rape and torture to Lockville City, all while kidnapping adults and children by the dozen and performing grotesque experiments on them to turn them into living "keys". Unleashing monstrous demons, empowering and assisting the psychopathic Lazlo in a raping and killing spree, and kidnapping the young Misery Violet, Butler reveals his intent to destroy the Double Helix of life and plunge all of humanity into an agonized, abominable existence of never-ending death and rebirth, then use their mangled, pain-stricken carcasses as a stairway to blast back into Heaven and reclaim his position of glory at God's side. The ultimate evil of the entire story and the Arch-Enemy of every major character, Butler was an enemy to all living things, seeking hellish existences for all except himself in his mad quest to regain God's favor, simply to satisfy his own ego.
    • The aforementioned Lazlo is a twisted sadist who is first introduced as a prime partaker in a Beastman trafficking ring, where Beastmen are tortured, abused, and raped for the pleasure of the wealthy, with Lazlo personally seen whipping a Beastman bloody before he is stopped by police officer Pete. After being granted an escape by Butler, Lazlo organizes a prison riot, slaughtering any guards who stand in his way to freedom. Once allying with Butler and becoming the super-powered Black Keyman, Lazlo first uses his abilities to seek vengeance on Pete for arresting him, leaving his current boss Franck to die in the process. As the seemingly sole super-powered being in Lockville City following this, Lazlo uses his powers to satisfy his disturbing and deviant tastes, kidnapping, raping, and butchering dozens upon dozens of women, defiling their corpses and using them as a throne. Capturing Pete's girlfriend Flora, and murdering his own henchmen when they fail him, Lazlo uses her as a hostage to torture Pete, proclaiming his plans to rape and torture her to death while Pete watches. In his final duel with Pete, Lazlo gleefully targets dozens of innocents to torment Pete, brutally executing several of them before being stopped, and spends his final moments whining that he doesn't deserve to be punished.
  • Kiba no Tabishounin – The Arms Peddler: Baron Oulardt of Yuga runs a lucrative market of war prisoners and families taken because clients could not pay his exorbitant interest rate. He parades around his latest line of "merchandise", the people of Caradia, to eager buyers after the men, women, and children were stripped, chained, and flogged. His human trafficking victims include the Caradians' young princess Airi, who he planned to sell to the nefarious Zora cult. To ensure he'd receive his pay and keep his business running, Oulardt criminalized the smuggling of outside weapons; Garami encounters the impaled heads of two arms dealers before her that failed.
  • Kill la Kill: Ragyo Kiryuin is the Big Bad and possibly one of the worst parents in all of fiction. Her ultimate goal is the annihilation of the human race by transforming the Earth into a cocoon for the parasite alien Life Fibers. She desires nothing less than the total physical, mental, and sexual domination of everyone that she comes into contact with, up to and including her own daughters. Prior to the start of the show, Ragyo married (and later had killed) a genius scientist named Soichiro, with whom she had two daughters: Satsuki and Ryuko, the latter of whom she never bothered to name. After experimenting on both, Ragyo believed that the experiments had cost the newborn Ryuko her life and callously disposed of her as a failure. After finding out seventeen years later that Ryuko is that daughter, Ragyo's first action is to Mind Rape her into subservience that temporarily succeeds. Satsuki fared little better growing up, subject to Ragyo's disturbing attentions and regular molestation. When Satsuki begins her rebellion, she wastes no time in delivering her daughter a No-Holds-Barred Beatdown and calling her a worthless failed experiment. She initially seems to display affection for her subordinates, but has absolutely no qualms about absorbing them into herself when it is convenient. When defeated, Ragyo rejects any offer at reconciliation, tearing out her own heart and crushing it with the promise that the Life Fibers will return and destroy all Ryuko held dear.
  • King of Thorn: Zeus, head of security for Venus Gate Labs, is a chaos-loving maniac who gleefully participates in the Venus Gate's twisted human experiments to harness the power of Medusa. When Shizuku's powers go out of control, Zeus ensures said powers kill as many people as possible. Zeus then proceeds to turn himself into data, download part of his code into Shizuku, manipulate her powers to murder everyone on the island the Lab is located, then releases an army of monsters onto the Earth to destroy anything they come across. After his old rival, Marco Owens, confronts him, Zeus has him beaten to death and reveals he plans to turn most of humanity into his own "Zeus Race", and then kill any humans left. Zeus then captures Kasumi and forces her to watch as he painfully transforms her friends, one of which is a child, into more Zeus Race beasts.
  • Kingdom Hearts: The manga series gives Adaptational Villainy to the following incarnations of Xehanort:
    • Kingdom Hearts I: Ansem, Seeker of Darkness is the Heartless form of Xehanort. Masterminding the Heartless' invasion of several worlds and Maleficent's plan to capture the Seven Princesses of Heart in order to open the Final Keyhole, Ansem Mind Rapes Riku so that he can possess his body. He stabs Maleficent with a Keyblade in order to destroy her once she's no longer of use to him, and then deceives Sora into using that same Keyblade to make what would ultimately be a Senseless Sacrifice, turning Sora into a Heartless and unsealing the Final Keyhole. When Riku's heart fights back from within to stop him from attempting to kill Kairi, Ansem uses his power to banish Riku's heart into the Dark Realm. Ultimately planning to open the Door of Darkness to let darkness consume all existence, Ansem shows nothing but glee towards his destructive ambitions. Returning after defeat as a specter within Riku's heart, Ansem attempts to play the boy's own emotions against him in order to take control of the boy's body once more, vicious to the end. Showcasing no redeeming features and played dead seriously against the manga's usually lighthearted and silly tone, Xehanort's Heartless would do whatever it took to gain ultimate knowledge and power, and to sate his undying hunger for darkness.
    • Kingdom Hearts II & 358/2 Days: Xemnas, the Nobody form of Xehanort and leader of Organization XIII, is portrayed as a cruel sociopath who rules his organization without care for any of its members, viewing his followers as weaklings who are only fit to serve his purposes. Looking to exploit the Keyblade's power to claim hearts, he allows Roxas and Xion to grow close, intending to then pit them against each other so he can judge which Keybearer would be more useful to his plans, even tampering with Xion's form, Mind Raping her and sending her to her death. When Axel is sent to look for the runaway Roxas, Xemnas threatens to eliminate him if he doesn't bring Roxas back dead or alive. He later attacks the Radiant Garden with hordes of Heartless, almost getting Goofy critically injured in the process, just so Sora and King Mickey can slay them all and give him enough hearts to complete his own Kingdom Hearts. When Ansem the Wise and Mickey try to stop his plans at his castle, Xemnas orders his Nobodies to kill them, and proceeds to overtake the Great Heart from within in an attempt to reduce all of existence to nothingness and destroy all those in his way. Cold-blooded, pitiless, and lacking his game counterpart's Tragic Villain qualities, Xemnas continuously shows himself to be more monstrous than any other Nobody solely because he thinks it in his best interest to be so.
  • Kino's Journey: The nameless king of the Land of the Coliseum is a tyrannical psycho who runs infamous Gladiator Games for his entertainment. Having murdered his father to ascend to the throne, the king eliminated anyone who may be a threat to him, including relatives and innocent civilians. He then divided the people into poverty and first-class, throwing the poor into dangerous living quarters and slavery. Even the first-class citizens weren't safe, as the king would execute them if they didn't follow his blood lust. He then created the Colosseum to throw any passing travelers to fight to the death to fuel his psychotic urges. When Kino refused to comply with him by sparing her opponents, the king grew furious and even executed one them in front of Kino. Among the many people Kino encountered, the king was one of the very few who manage to disturb her with his sheer cruelty.
  • Kirby: Right Back at Ya!: Nightmare, or eNeMeE in the dub, is the scheming puppetmaster behind the entire series. Through his galactic conglomerate empire Holy Nightmare Corporation (Nightmare Enterprises in the dub), Nightmare manufactures the Demon Beasts to sell to the whims of unsavory buyers for their own destructive purposes, using his influence to conquer or destroy entire planets while viciously putting down rebellion—the time he twisted Knuckle Joe into a monster, forcing his friend Meta Knight to put him down, and then wiping out the rest of his resistance, being simply one example. In the present, Nightmare pumps out Demon Beasts to Pop Star and speeds up the asteroid Gerath to crash into Pop Star to destroy it, and in the finale, Nightmare destroys Cappy Town and even kidnaps the young Tiff to trap Kirby in a horrific nightmare. Drunk on his own power and remarkably vile for the source material, Nightmare stands as possibly the darkest villain in the fluffy Kirby franchise.
  • Kite: Dirty Cop Akai raises orphaned girls to become his own personal 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 sex toy, raping her as he pleases, gifts her earrings filled with her own parents blood, and notably repeats the molestation on his other girls. His crimes dwarfing even those of his fellow rapist partner-in-crime, Akai is utterly disgusting.
  • Knights: The Crown Prince of the Kingdom of Exclude is responsible for the witch hunts that killed millions of people over the last few decades. Encouraging said brutality to empower the Relics—artifacts holding the vengeful souls of saints—with the deaths of "heretics", the Prince authorizes all sorts of torture, rape and mass executions. Betraying his allies after they stop being useful for him, the Prince attacks Sir Willheim and the Hammer of Justice, killing most of the group and using the Relics to bind their strongest members to his will. When his soldiers capture Nina, a girl in love with heroic squire Mistletien "Mist", the Prince orders her to be tortured and puts her feet inside burning iron boots. Once Nina mutilates her own tongue to avoid betraying Mist, the Prince orders her to be publicly executed. When Mist and his friends appear to save Nina, the Prince forces the Hammer of Justice to fight to the death against their friends. Offering knighthood to Mist, the Prince confesses that empowering the Relics was the means to accomplish his real goal of having a powerful army to start expansionist wars because "Being King can get pretty boring".
  • Kodoku Experiment: Camilla Baruges begins the series by sending a group of soldiers to die on Deronga Five Alpha for "research." Twenty years later, she leads an expedition back to witness the end of the planet, only for the last remnants of one of the soldiers she betrayed to infect the ship. As things get worse, Baruges reveals her ambitions. She kills all her commanding officers with preparations she had made beforehand, slaughters anyone who objects and reveals she is responsible for the infectious life form plaguing the ship, and plans to spread it farther to ensure survival only of the fittest. Even when she learns one of the soldiers resisting her is her son due to the donation of her DNA, she has no problem trying to kill him.
  • Kongoh Bancho: Mudou Gou, or the Gedou (Heresy) Bancho, sticks in a series full of honorable and sometimes heroic villains. When one of the Five-Man Band, Yuu, arrives to see the orphans he considers his own family, we see in flashbacks that Gou tortured and beat the orphans while disguised as Yuu and arranged them to spell out the Kanji for "Heresy." When he fights Yuu, Gou reveals he gave all the kids fatal doses of poison just to throw Yuu's game off, and activates a bomb in the orphanage to blow them all up. He then mocks Yuu about him having to watch the final one with Yuu dying slowly of the poison. When Yuu reveals he planned for poison and explosions, Gou shows his lack of honor by taking one orphan hostage with a knife to his throat. Despite his brief appearance in the manga, the Gedou Bancho proved himself to be easily the most evil and depraved villain: a fact he acknowledges with his Catchphrase "Aren't I the lowest?"
  • Kurau Phantom Memory: Satoshi Ichise stands out among all the villains as the most wicked. A Mad Scientist extraordinaire, Ichise torments a little girl to awaken powers within her, even at the risk of dangerous surges of energy within her. Later contracted to create an army of Super Soldiers, Ichise enjoys the feeling of power he gets from his experiments and remains apathetic as his work kills countless among his test subjects.
  • Kurohime: Yashahime is one of the most powerful Gods and the most evil and insane. Initially a Stalker with a Crush for the God of Death Darkray, after his defeat, Yashahime found Darkray's soul and, despite being capable of saving him, destroys him out of disgust. She proceeds to brainwash Kurohime's beloved Zero into the new Death God and relishes using him to destroy Kurohime. Yashahime later brutally tries to kill Kurohime by slicing her to ribbons. When this is undone, she steals the power of the god of earth by merging with the planet, aiming to devour and sacrifice the lives of all surviving humans to free herself to go on and devour every planet that exists so she can reign over the universe. When Zero rejects her wishes to rule at her side, she remorselessly tries to kill him as well.
  • Kurokami: The Animation: Lord Hiyou is a sadistic Tera Guardian, and a member of the Shishigami clan. During his time in the Pure Place, he kidnapped humans and experimented on them, giving them the powers of other Tera Guardians to make them his Tribal Ends, which resulted in the deaths of many Guardians. Searching for a Contractee, he finds Nanase Shinobu and convinces her to kill her Roots in order to gain power and happiness; one of whom was Keita Ibuki's mother. Working for Reishin, he kidnaps hundreds of Tera Guardians to painfully drain them of their Tera in order to make more Tribal Ends, leaving the Guardians as charred corpses. Attempting to find and destroy the Tera stones, he and Nanase slaughter an entire clan of Guardians protecting one. Having a sick obsession with Kuro, Hiyou forces his Tribal Ends to capture her and kill Keita. Following the two to Okinawa after killing his assistant, he orders Nanase to kill Keita while he kidnaps Kuro and tries to rape her, and once that fails, he tortures her by popping her blood vessels.
  • Last Exile: Maestro Delphine Eraclea is the leader of the sinister Guild who desires to take control of the ancient ship, The Exile, for herself. A cruel and capricious ruler who murdered her way to power, with even her own parents as her victims, Delphine manipulates her younger brother Dio with disturbingly sexual undertones and mind rapes him into insanity. She continues a horrific, bloody war by sabotaging a peace treaty, targeting ships bringing supplies to refugees as she treats herself to luxurious meals that she claims taste all the better for the excessive resources required for them, leading to more innocent deaths. With countless civilian murdered by her machinations, she also strings along Dio's only friend Lucciola with promises to free Dio, but betrays and disintegrates Lucciola when she determines he's too much trouble for her—but not before sending her own insane brother to fight and die for her. When Delphine captures her Arch-Enemy Alex Roe, she tortures him in thorny vines, gloating how beautiful he is when he is suffering. Representing the worst decadence and manipulative cruelty of the nobility, Delphine is seen smiling the most whenever others are suffering and dying thanks to her.
  • Legend of Galactic Heroes: Duke Otho von Braunschweig will take any measure to secure power, launching a civil war when the former Kaiser's grandson is made ruler of the empire instead of his daughter. Continuing the Goldenbaum Dynasty's despicable eugenics policy, Braunschweig allows himself and other nobles free reign to torment common folk, viewing the latter as inferior. An incompetent but vile military commander, Braunschweig threatens the family of a genius admiral to force him to serve; executes the sole surviving noble from a lost battle for the mere suspicion of treason; and happily throws away the lives of countless soldiers for his war. For killing his oppressive nephew, Braunschweig orders the Westerland Massacre, nuking the entire planet out of rage. This repulsive act causes even Braunschweig's own noble followers to commit mass defection and even suicide.
  • Legend of Himiko: Lord Shikara, General-Governor of Kune, is the wicked, ambitious son of the King of Kune who seeks the Bokkan for ends beyond his empire's. Shikara has his armies lay waste to the country of Yamatai so he can invade the fountain where the Bokkan is kept, murdering the mother of the then-infant guardian Himiko and attempting to toss Himiko herself into the Bokkan's flames. Corrupting the Bokkan's fountain, Shikara murders the temple's priests to turn them into his undead servitors and has the remnants of Yamatai's defenders hunted, ordering entire villages and their populations indiscriminately massacred to find their base. Along the way, Shikara regularly murders his own minions for any reason he can think of, even harvesting their bodies to use as undead soldiers through the corrupted fountain; horribly disfigures the love of his general Chosa, showing her to Chosa purely to torment them and killing them both when they try to escape; and murders his own father to take the throne for himself. Shikara ultimately tries to use the fountain's darkness to cleanse Yamatai of all human life to rule a land of lifeless darkness, hysterically aware of his own evil to his last breath.
  • Legend of Lemnear:
    • Original OVA:
      • Lord Barol, Champion of Gold and lord of the flying fortress Valkyras, is a vicious tyrant who seeks to brutally subjugate humanity for casting him out. Barol leads his armies to slaughter and destroy all they can across the land, the total annihilation of Lemnear's village and all of its inhabitants merely one of the casualties of his campaign, while leaving cities he dominates in the care of sadistic generals like Vuan to do with as they please. To steal the power of Lemnear, Barol kidnaps her brother Masshu, and when they turn the tables against him, Barol elects to rain fire down upon the world and destroy it all out of spite.
      • The aforementioned Vuan is a fat, greasy slaver who serves Lord Barol for status and pleasure. Ordering brutal raids to capture innocents and sell them, Vuan especially focuses on women he can obtain, keeping the most attractive women to be mind controlled sex slaves for his pleasure, having them stand around naked in his chambers to serve him and perform lasciviously. Upon capturing Lemnear, Vuan desires to keep her for himself, mind-controlling and attempting to assault her as he has countless other innocent women.
    • Manga, by Kinji Yoshimoto: The wicked Camus is the most black-hearted of Barol's generals who aid in the evil gods' plan to eradicate humanity. Responsible for overseeing the capture of countless humans to be turned into monsters for their army, Camus empowers violent men to work as his enforcers, and when Lemnear happens upon his city, Camus nearly destroys it with a monster under his control. Capturing Lemnear, Camus uses magic to cause immense pain to her internal organs, laughing sadistically before fighting her.
  • Legend of Mana: Shiro Amano's manga version of Emperor Drakonis, like his game counterpart, is a cruel, megalomaniacal dragon banished to the underworld for his cruel designs on the world. Playing on the desperation of the fallen warrior Larc to reunite with his sister, Drakonis makes Larc his servant and through him slaughters the dragons who initially stopped him to return to the world of the living. When Larc confronts him on this, Drakonis painfully transforms him into a horrible beast, loosing him on his own sister and hysterically laughing when Larc is forcefully put down as a result. With his physical form attained again, Drakonis intends to devour the souls of all in existence, scouring both the souls of those alive and in the underworld to sate his lust for power.
  • Legend of the Blue Wolves: Captain Continental is the depraved leader of a group of soldiers. As their leader, Continental forces the subordinates he takes sexual interest in to submit to him, where he repeatedly whips and rapes them, brainwashing them into doing whatever he wants. After becoming infatuated with Jonathan, Continental forces him to strip to his underwear and whips him when he refuses to submit. He later publicly humiliates Jonathan by beating him to a pulp in front of his other subordinates. Knowing that Jonathan's lover, Leonard, is behaving as his guardian, Continental gets some of his subordinates to split Jonathan and Leonard apart so he can violently rape Jonathan in the showers.
  • Legend of Heavenly Sphere Shurato: Shiva, the Goddess of Destruction and the secret Big Bad, is the ruler of the Asura forces. sealed away thousands of years ago by the God Brahma for conspiring to overthrow the established order. Manipulating the goddess Vishnu's protector Indra into betraying her, Shiva later returns and promptly sacrifices countless thousands of her own forces just to test Vishnu's defenses. Once satisfied, Shiva begins attacking civilians with the Asura forces, killing all she can. Not satisfied, Shiva uses her powers to corrupt even more innocent people to set them after one another with more bloodshed. Revealing that Shurato's former best friend Gai was corrupted by her long ago, Shiva promptly kills Vishnu, followed by most of her army, to absorb their powers and use her powers to seize on the darkness within all humans' hearts, intending on wiping out everyone to showcase her supremacy.
  • The Legend of the Legendary Heroes: The anime version has Lir Orla. In flashback he and his Siblings in Crime murdered thirty-eight Alpha Stigmas who were under Tiir's protection; the victims, most of whom were children, were butchered so that their magic could be extracted and weaponized. In the present day, Lir acts as a assassin for King Riphal of Gastark, assassinating a duke who had outlived his usefulness, and then trying to take out King Sion of Roland. A few weeks later, he tracks Tiir down again, and massacres another group of children who were in his charge, gloating the entire time about how they're monsters and no one will care if they're exterminated. Essentially a swaggering street punk who managed to get his hands on a Ring of Power that turned him into a Hero Killer, Lir possesses no redeeming features, and unlike King Riphal, who wants to end war, he is just a sadist who finds murder more amusing than anything else.
  • The Legend of Zelda series gives the following Adaptational Villainy:
    • Ocarina of Time: Ganondorf, presented here as a selfish and sociopathic king, attacks Link when the latter is a child, poisons the Great Deku Tree, and is heavily implied to have killed Zelda's father. Ganondorf is also a horrific master, brainwashing his entire Gerudo tribe with Twinrova's aid. Some of his own monsters serve him unwillingly: Gohma was a harmless spider that he painfully mutated into the monster that killed the Deku Tree. Ganondorf would also turn Volvagia, a benevolent, sentient dragon and Link's friend, into a mindless beast that Link was forced to euthanize.
    • Phantom Hourglass: Bellum here is given sapience, yet still carries out his atrocities to fuel his sadistic appetite. The Arch-Enemy of the Ocean King, Bellum would drain his foe's life force to the point where he becomes a frail and weak old man, Oshu, as a result, and would still drain Oshu's remaining life force, slowly killing him. Bellum would then use the Ocean King's temple to drain the life-force of the Ocean King's inhabitants, while constructing the Ghost Ship to find and lure countless more victims; including Linebeck's crew and Tetra, whom Bellum petrified. He would then possess Linebeck and force him to kill his friend, Link, before allowing Linebeck to commit suicide so he can consume his life force afterwards. Forced out of Linebeck's body, Bellum would drag the Ocean King down further depths of the sea in an attempt to kill him.
  • The Legendary Starfy manga, by Yumiko Sudo: In the games, Ogura is portrayed as a Tragic Villain, but in this manga adaptation, he is far worse. Making his first appearance by attempting to suffocate Starfy to death, he goes on to kidnap Starfy's mom and force Starfy to fight her, taking a cruel satisfaction in doing so. Going on to start forest fires and implant landmines in towns, he lacks any of his redeeming traits and inherits Evil's worst traits from the games.
  • Lensman:
    • Secret of the Lens: Lord Helmuth is the tyrant of the Boskone Empire who seeks dominion over the entire universe, sending his men to take over or even destroy entire planets, with the hero's farm world obliterated on his orders for the sake of killing one man. Helmuth keeps the populaces of the planets he takes over incapacitated with drugs, leaving them too drugged up to do anything but passively accept his reign, and has countless put to awful, grueling slavery for the rest of their lives in mines to keep a steady supply of the drug. Helmuth is also a frighteningly awful boss who executes subordinates for seemingly any reason he can think of, murdering two competent commanders merely for not having been thorough enough with their attempts to kill the Lensmen and nearly killing another for the transgression of running his mouth–-later executing him anyways in dissatisfaction with his service.
    • Galactic Patrol Lensman:
      • Lord Helmuth is the monstrous ruler of Boskone. A genocidal tyrant, Helmuth has entire planets exterminated on a regular basis, killing countless members of the galactic patrol, and approves sadistic plots of his chief agents, such as Neizel's plan to painfully turn a whole planet to stone via the mineral Geonium. Helmuth is also a terrible boss, frequently painfully killing subordinates for failing. Even in other heroes' backstories, it is revealed Helmuth occupies worlds and subjects inhabitants to genocide if it suits his interest and fancy.
      • Neizel of Boskone is one of the utter worst of the Boskonian Empire's already-polluted ranks, engaging in the conquest and slaughter of entire planets with the same regularity as the other commanders and going beyond. Neizel harvests a substance called Geonium which kills its victims through slow and agonizing petrification, letting the Geonium break out through a star system with a nightclub full of aliens turned to stone as one of myriad casualties it causes. Neizel happily intends to sell the Geonium as a weapon to tyrants with the right price, gloating that there are planets where the rulers would "much rather take care of stone than people".
  • Leviathan, by Eiji Otsuka and Yuu Kinutani: In a strange series filled with strange creatures, this duo is the worst this dark world has to offer:
    • The Abrahamic God is a mass murdering tyrant obsessed with his own worship. Having taking control of the world with the spread of Christianity, God secretly controls the United States of America, which he uses to commit religiously motivated atrocities to secure more control of the world. Having declared a Holy War on the nation of Kari to obtain the reforged Longinus' spear and use it to cause The End of the World as We Know It, also destroying the city of Tokyo in the This Side of reality in the backstory. God appears personally in the climax of the story, where he attacks Tokyo to personally kill the president of Kari to get the reforged Holy Spear, puts most of the cast in a Lotus-Eater Machine to force their souls to go to his paradise and tries to force one of his former followers to impale his friend. Self-righteous and intolerant, this version of God is a mass-murdering deity that believes himself superior to all existence.
    • Greig Beider is behind a series of racially-aimed castrations towards immigrants from a mostly inbred nation. Owner of the company Tokyo and the New Millennium, he uses the immigrants' bodies to create drugs which he uses to capture even more of them, in a scheme which he plans in repeating with the Japanese. Considering himself above the law, Greig burns the library of one of his former employees to force Souzei Kamizo to give his DNA, which Greig want to use to become a perfect being akin to God. Motivated by his own greed, Greig show that a mere human can be as bad or worse than supernatural beings.
  • Linebarrels of Iron: Riku Ousei is a sociopathic member of the Katou Organization. While most other members have at least some redeeming qualities, Ousei delights in blowing people up from orbit with a Kill Sat just to make a point about his twisted concept of imagination, and he is ready and willing to kill off a couple of innocent bystanders just to taunt Koichi and drive him into a rage. After doing that, he was going to repeat the atrocity, this time targeting Koichi's Unlucky Childhood Friend Risako.
  • Litchi Hikari Club & Bokura no Hikari Club prequel: While all the members of the titular club prove that Teens Are Monsters, their leaders are the most monstrous:
    • Zera, real name Tsunekawa, is the leader of the Hikari club, having turned it from a boys' club into his own Cult of Personality, explicitly basing it on the Nazis. Introduced ordering the executing of a classmate and allowing Jaibo to torture a teacher, Zera only becomes worse later. Through the series, Zera creates the robot Litchi and orders him to capture female teenagers in order to "admire their beauty" by keeping them captive; allows the girls to starve until other members free them except for his favorite girl; threatens to rape the little sister of a rebellious member; and, as his paranoia becomes worse, has his followers brutally executed. Deciding to sacrifice his favorite captive in order to—in his mind—save himself from a prophecy that said that he would either die at his fourteen or rule the world at his thirty, Zera laughts at his lover's death before he is by for a formerly loyal follower, dying surprised at realizing that his entrails were like everyone else. A cruel, selfish teenager that based his own actions on the insane Roman emperor Elagabalus/Heliogabalus, Zera was an egomaniac obsessed with youth and his own pleasure.
    • The aforementioned Jaibo, real name Ameya, is Zera's right hand and secret lover. Formerly a child with a hobby of killing animals, Jaibo encouraged Zera into becoming even worse, even creating his current name. When a member of the Hikari club offered to give his own eye, Jaibo purposely made the operation as painful as possible. Introduced brutally killing his own teacher after having humiliated her, Jaibo later becomes jealous of Zera's favorite captive, while he starts to notice that he's losing his attention. Decided to betray Zera to prevent him from leaving him, Jaibo burns the lichi field fueling their robot and blames another member for it alongside a completely loyal member that captured him, knowing perfectly that Zera would execute them. In the finale, Jaibo tries to kill Zera himself, hypocritically confessing his love towards him before being killed. A sadist obsessed with Zera, Jaibo was complicit in his crimes, following him with an obsession born of finding someone as wicked as himself.
  • Lord Marksman and Vanadis:
    • Duke Maximilian Bennusa Ganelon is the driving force of evil for most of the story, manipulating the Brune civil war, and pressing soldiers to commit war crimes and atrocities. Poisoning Prince Faron, and executing honorable commanders via cruelly creative methods (including large bees), Ganelon later burns down an entire city with civilian casualties to escape justice and continues to manipulate new wars, even devouring the demon Baba Yaga when she recognizes him as the demon Koschei in disguise. Obsessed with chaos, Ganelon even tries to unleash a primordial force of destruction to raze the land, only to try to betray and devour her as well.
    • Torbalan is a demon who joins Prince Elliot's army as the human Le(ice)ster so he can kill more people. After being defeated, Torbalan leaves the army and establishes a base at an island where he gets a bunch of pirates to work for him. Torbalan sinks two ships using a sea dragon before ordering his army to launch a full-scale attack on a helpless town, intending to kill all the residents along with the naval fleet protecting them. Finding himself outmatched, Torbalan begins sending waves of his men to wear the enemy down, not caring if they all die.
  • Lord of Lords Ryu Knight: Emperor Helldragon is the supreme leader of the dreaded, extraterrestrial Helldragon tribe. A conqueror and destroyer who envies the fertile lands of Earth Tear over the small planet he reigns over, the Emperor leads assaults every thousand years to penetrate Earth Tear's defenses and launch an all-out invasion of Earth Tear, planning to annihilate what he doesn't dominate and put Earth Tear under his cruel claw. Promoting a survival-of-the-fittest philosophy among his own army and constantly purging weak soldiers from the Tribe, the Emperor's assaults lead to countless lives lost and entire cities destroyed. Once Earth Tear's shield is finally about to give way, the Emperor resolves to land his mothership down on the planet's surface in the midst of the final battle and crush everyone underneath it to silence any opposition to his attack once and for all.
  • Lupin III franchise:
    • "Red Jacket" series: Wealthy socialite William Huffner, from "The Bride Came D.O.A.", is Fujiko Mine's husband and mark to steal his jewels. Huffner, however, is secretly a ruthless Serial Killer who cheerfully murders his wives to preserve their corpses in a twisted form of art and relishes killing the women with his bare hands. To date, Huffner has murdered 99 wives and intends on making Fujiko the 100th, gloating when he corners her to try to kill her and add her to his sick tableau.
    • Mystery of the Hemingway Papers: Crazy Mash is a sadist who works for the rebel forces on Colcaca Island in the Mediterranean Sea. He routinely leads his men to Rape, Pillage, and Burn innocent people all along the countryside. He is also a former comrade of Jigen's, and he betrayed Jigen and his entire group, gunned them all down and left Jigen for dead. Ultimately a Dirty Coward, he is unable to fight the superior Jigen one-on-one and wants to corner him in traps or when he's in a group.
    • The Woman Called Fujiko Mine: Count Luis Yu Almeida stands out from the dark cast, which consists of thieves, murderers, seductresses, assassins, and gang bosses as the protagonists. The mastermind behind horrible human experimentation and the owner of Glaucus Pharmaceuticals, Count Almeida and his scientists conducted Cold War experiments, including mind control, hypnosis, memory and personality manipulation, sensory deprivation, physical abuse, and rape. During the course of these experiments, Almeida convinced two scientists, Dr. Fritz Kaiser and his wife, to include their young daughter in the experimental trials, before murdering Dr. Kaiser. Almeida adds the memories of the tortures he puts his other experimental subjects through to her memories. Thirteen years later, we see how insane this woman has gone from everything the Count has done to her. Glaucus Pharmaceuticals is now kidnapping children and adults, disguising human experimentation as cult fanatics, and keeping surveillance almost everywhere. Based on all the evidence Lupin compiles on Almeida's guilt, the Count's only desire was to create the perfect slave. The revelation that Luis is already dead by the time the series takes place only drives in the injustice of all he has done.
  • Macross Frontier: The original version of Dr. Grace O'Connor plans to Mind Control the alien Vajra into subjugating humanity and the Zentradi under her control and killing those who resist. Murdering the parents of the seven-year-old Sheryl Nemo, Grace torments the then-homeless girl while she is all alone, before using Sheryl in a painful experiment which killed her previous eight subjects, and guarantees Sheryl will die in a decade. Although Grace admits she grows to gain some genuine affection for Sheryl, she decides these feelings will get in the way of her galaxy conquering goals and electronically deletes them from her own brain.
  • Mad Bull 34: Here are the worst that John "Sleepy" Estes ("Mad Bull") and Daizaburo "Eddie" Ban have faced:
    • Hit and Rape arc: The owner of the Derringer Club is a man who ostensibly trains women to use guns for self-defense, only to purposefully sabotage them and sell their locations to thugs so they can ambush, rape and sometimes murder them. When an outbreak of these rapes occur, the gun shop owner decides to personally assault a famed TV personality and murder her entire crew before killing her as well.
    • Charging Jackie arc: Morley Edwards is a wealthy businessman who is a brutal Serial Rapist, responsible for at least 12 rapes and murders. Whenever he is held accountable legally, he simply murders the witnesses to skate free of justice. When reporter "Charging" Jackie challenges him, he tries to Car Bomb her and has her beloved cat roasted alive in the microwave before hiring assassins to kill her, with zero regard for collateral damage.
    • Golden Soldier arc: Deathmask Callahan murders Warden Water and takes over his prison from the inside. Developing the Golden Soldier to better assist assassins in claiming victims so he can take a part of the cut, Callahan takes over his prison, keeping the female prisoners as sex slaves and ruling via an iron fist. Torturing and murdering two undercover officers in the prison, Callahan later has a person butchered to show off how dangerous one inmate is, murders one of his own men for commenting on how powerful Sleepy is and tries to cheat in the rules of the established fights, resulting in the death of Eddie's beloved Perrine.
  • Madlax: Friday Monday is the founder and leader of the Enfant organization and one of the few Gift users. Believing that morality is nothing more than human's mask to hide its desire for war, Monday actively tries to bring out their "true nature". In 1999, with the power of the Holy Books and the Gift, he initiated a ritual to brainwash the entire humanity to start global warfare. It caused a nearby plane to crash, leaving only two survivors. After his attempt was foiled by Richard Burton, Monday retaliated by mind-controlling him into trying to murder Margaret, his own daughter, who was forced to kill him. As Gazth-Sonika was the only country affected by the ritual, Friday Monday is the one who started the civil-war and prolonged it for twelve years through all kinds of means—such as political corruption, murder, and forced identity amnesia, among others—making him responsible for all the deaths that happened in the series. Finally, after he eventually found the two Holy Books he lost, Monday kidnapped and mind-controlled Margaret into help him to get in the Sanctuary to finish the ritual he started twelve years ago. A self-righteous nihilist, Friday Monday is the only character who has never shown a single redeeming quality.
  • Magical Girl Apocalypse: Rei Kurorogi uses the container body of Kaito Makabe, kidnapping ten female scientists, knowing one has an ability for him to become a god, perversely experimenting on her and horrifically mutilating the others. Creating two Artificial Human children, Kurorogi as Makabe subjects them to torturous abuse: killing one, the other is driven to destroy multiple parallel Earths to ultimately kill himself and escape his creator. Kurorogi also uses the identity of Sou Shirokane to manipulate his brilliant son into becoming an unstable demon that almost destroys Tokyo. Ascending to godhood, Kurorogi attempts to obliterate all life when the heroes oppose him, and after his initial defeat, takes control of the King, the Earth's will, for his revenge. Creating Magical Girl Site, Kurorogi drives already anguished teenage girls to complete despair, with the intent to cause the apocalyptic Tempest and assume supreme rule over humanity.
  • Magical Girl Raising Project:
    • Cyber Fairy Fav was designed to aid in the Magical Girl selection tests but found them boring and grew excited when an accident killed several of them. Corrupting the one survivor, Cranberry, Fav saw her rise to the rank of test administrator, allowing them to re-engineer their tests for potential Magical Girls, killing those who fail to sate their mutual bloodlust. Responsible for the deaths of hundreds, including young children, over the years, Fav sells the girls weapons in return for their lifespan to further bloody the battles. When Cranberry is eventually killed, Fav's only reaction is to seek a new partner-in-crime to continue with.
    • Calamity Mary, even before she was chosen to become a magical girl, was an alcoholic named Naoko Yamamoto who abused her daughter in order to make herself feel powerful. Upon receiving her powers, she set about using her abilities to torment others for her own amusement. She forced her way into the Yakuza as a way to help out bad people and had no issue abusing and shooting her fellow magical girls when they didn't act submissive. When the magical girls were forced into a killing game, she embraced the conflict with glee. Eventually she escalated into attacking a highway and shooting dozens of civilians to watch the explosions and lure in her rivals, threatening to keep on killing unless she's stopped.
  • Magi: The Labyrinth of Magic:
    • King David Jehoahz Abraham is the King of Alma Torran of the past and the ruler of the Magicians. As King, David oppresses all non-human species in his empire with magic towers constructed to steal their reason and intellect, turning them into feral, mindless beasts under the control of the human ruling class. Having discovered the form of "Ill Ilah," an Eldritch Abomination known as God, David makes plans to surpass it and take a seat as God himself. When his son Solomon rebels against David's tyranny, David bides his time until Solomon and his allies attack David's capital. David lets them attack a decoy, before leading his magicians in his own entourage to butcher the helpless civilians, including the children. The young son of two of Solomon's closest followers is found hideously burnt and dying, but still alive, begging his mother to save him as he dies in her arms. The one fighter who attempts to stop David is mercilessly slaughtered with nothing short of cold satisfaction. When engaging Solomon, David shows no regret or remorse, proclaiming his grand ambitions and utter megalomania.
    • Arba, once one of King Solomon's most beloved followers, fell into depravity when Solomon's will supplanted that of Ill Ilah's. Devoting herself to destroying the kingdom of Alma Torran, Arba founded Al-Thamen, also known as "The Organization", and led an attack on the kingdom, culminating in her personally cutting down her surrogate sister, Solomon's pregnant lover Queen Sheba. Vowing to return to destroy the world Solomon creates anew, Arba manifests in Solomon's new world in the Kou Empire, having children for the purpose of possessing them when her current body is worn out. When she possesses her descendant Gyokuen, Arba murders Gyokuen's husband, Emperor Hakutoku, and his elder two sons, mocking her remaining son Hakuryu, the only son Arba herself gave birth to, for his helplessness in learning the truth. Murdering her second husband to seize the throne, Arba attempts to summon Ill Ilah back into the world to drain it dry of magic and leave it a barren, lifeless husk, devoted only to the will of Ill Ilah and to the destruction of all Solomon has made.
  • Magmel Of The Sea Blue: The unnamed scientist who is the previous master of Zero is a revolting old man who performs horrific experiments on children, including Zero, so that he could make a powerful Ractor soldier to sell for profit. After the young Angler Inyou saves Zero from trouble when she tries to fight against a Magmel monster, resulting in the scientist's experiment getting ruined, the scientist tries to pursue revenge against Inyou. To this end, he attempts to make Zero submit to him by sending unwilling suicide bombers—who are revealed to be children that failed to become powerful Ractor users—towards her dearest friends while forcing her to watch the spectacle. When Inyou attempts to save Zero, the scientist then sics several suicide bombers towards him during the battle. When the scientist was revealed to be a Ractor user, it was revealed that he drains the power of several Ractor users to become more powerful.
  • Mai-Otome: Tomoe Marguerite successfully uses her charm to mask her malicious intentions. Throughout the show, she tried to personally take out Arika Yumemiya, because she saw her as a potential threat to her affections towards her elder Shizuru Fujino. Possibly Tomoe's most despicable act involved her trying to convince a gang to rape Arika, knowing that if they went through with it, her Otome powers would be neutralized. She later went on to betray the Alliance, stating that she deserved to have anything that she wanted, and that everyone's lives, except that of Shizuru's, were meaningless to her. Despite supposedly loving Shizuru, Tomoe took great pleasure in essentially making Shizuru into her plaything. When Shizuru revealed to her that she never loved her, Tomoe rants, noting the similarities between her and the older Otome, and states that she was entitled to be the only person to have her. She then attempts to attack her and Natsuki.
  • Majin Tantei Nougami Neuro: Sicks, real name Jody Tubulik, absolutely revels in his evil. A monster from birth who slit the other babies' throats in his nursery and later murdered both his parents, Sicks comes into conflict with the demon detective Neuro Nōgami. Sicks tracks down his clone, X, and murders X's love, infiltrating the police by wearing the skin of a man he killed. He punishes a subordinate who had failed to find X by making him saw himself open with a rusty saw, admitting he didn't care about a fair punishment, he just wanted to see the man die. To present a meal for Neuro, a demon who eats mysteries, the sadistic Sicks forces a mansion's worth of people to commit murders in inventive ways, and then blew them up when Neuro was repulsed by the gesture. When recruiting his "Fingers, " Sicks presented one with a cube made of the faces he had ripped from everyone close to him, and with another he forced him to murder his own father. Sicks's goal was nothing less than the absolute annihilation of humanity, and on his orders, Japan suffered catastrophic death tolls before he and Neuro finally engaged in a Duel to the Death.
  • Majuu Sensen, by Ken Ishikawa: Professor Genzou Kuruma, the Mad Scientist father of Shin'ichi, is one of the 13 Apostles serving God. He seeks to create a new breed of human/animal hybrids called "New-Men" by morphing people's cells, hoping to accomplish everything before God starts his apocalyptic recreation process. Having experimented on Judas's sons and turning them into dust creatures, he starts the story by massacring everyone in the International Science Institute, before using Shin'ichi as a guinea pig for his painful New-Men experiments. Considering Shin'ichi a failure, he decides to experiment on his wife instead, taunting Shin'ichi about her results. Deciding to cast aside his own humanity, Kuruma has Shin'ichi slowly electrocuted to death, then leaves him and his wife to die in a house fire. Continuing to perform New-Men experiments on random people with his fellow scientists for five years, he tries to kill Shin'ichi after hearing he's still alive, and later orders Professor Shaft to flood the earth in an attempt to recreate Noah's Ark.
  • Makai Tensho, by Ken Ishikawa: Mori Soiken is a centuries-old wizard who plans to create a portal to Hell to unleash Satan and plunge the world into darkness. Originally a ninja named Karula, Soiken discovered the powers of resurrection and the gateway to Hell. The father of demon Amakusa Shiro Tokisada, Soiken took him as his own in order to find out Hell's secrets and to easily control Satan. Orchestrating the Shimabara Rebellion alongside Amakusa, Soiken has 30,000 of his men slaughtered as an offering to Satan, and once that was deemed "too small", he decided to resurrect the spirits of various Japanese warriors as powerful demons using women as incubators. With his squad, Soiken has Hoizon kidnap hero Yagyu Jubei's dying father to make him a demon, spreads a disease upon the Kishu village that causes its citizens to go mad, and tries to have Jubei resurrected to serve as his most powerful fighter.
  • Malicious Code, by Masahiro Ikeno: Echidna is a member of the Killers, an organization led by Edgar to control the ruins of Tokyo. Roaming in the ruins of Tokyo to search Code users and kill them to steal their powers, Echidna steals the eyes of her favorite victims and implants them into herself. Interrupting the fight between Hiro and Izumi, Echidna uses her powers to control the body of one of Izumi's friend and force him to kill an injured Izumi. Revealing the truth about herself, Echidna admits being behind the spread of the Pandora Virus that killed 90% of the Japanese population, and the creator of Hiro and the rebellious Killer Mikoto, calling herself their mother to insult the former. Using the powers of the powerful, blind Yomi, Echidna admits having ripped Yomi's eyes to have her powers when she was a child, declaring that she didn't needed them before trying to kill Hiro and his friends. Having killed dozens by her own hands, Echidna also helped to killed millions in the past, all for the sake of her own power.
  • MÄR: The manga version of Halloween is one of the most sadistic and brutal members of the Chess Pieces. Originally a homeless and bullied boy by the name of Pamp, he had a firm belief that the weak become sacrifices for the strong, and promised to become strong so he could kill everybody in the village. He started off by killing neighborhood pets before going on to stab five kids to death and fleeing the village. During the first War Games, because he and Alan tied, he cursed Alan and Edward to be forcibly merged together out of spite. Six years later when Phantom resurrects, Halloween and Chimera launch an attack on the country of Acalupa, destroying it and wiping out the majority of its population, recounting to Ian how fun it was. To punish Ian for not taking part in the attack on Märhaven, Halloween has Chimera transorm Ian's best friend, Gido, into a grotesque mixture of human and monster, knowing it would cause more pain to Ian if his best friend was punished instead. During his fight against Alan in the second War Games, Halloween distracts Alan by setting several innocent spectators on fire while telling Alan how sickened he is by Alan's sense of protecting those in need.
  • Marry Grave: Markov is the Gorgon King who invaded the Dwarf Kingdom by petrifying most of the people inside so that he could put them in his collection of statues. In the past, he was a stepfather of Riseman Sawyer's guardian, Dante, who uses him as a puppet for slaughtering most of the soldiers while lying about what happened to Dante's parents. After Dante found out the truth, Markov killed Dante's parents during his murdering spree just for the sake of his amusement, and when Dante re-settles his score with Markov in the present day, the latter simply petrifies Dante.
  • Martian Successor Nadesico: Admiral Haruki Kusakabe establishes himself as heinous person near the end of the TV series, by framing Tsukumo Shiratori for treason and having his former best friend Genichiro "mercy kill" him, all in order to prolong the war between Earth and Jupiter, while having a chance to seize Mars's forgotten technology. He is finally discovered and forced into exile, but plots revenge. It is revealed that in the three years between the series and The Movie, he had Akito and Yurika captured and experimented on, to replicate the Boson Jumping effect. The experiments permanently hooked Yurika up to a machine, in a catatonic state, and completely destroyed Akito's senses, leaving him an empty, tragic shell of the innocent boy he was.
  • Mazinger franchise:
    • UFO Robo Grendizer:
      • Original manga: The psychotic Barados is the worst of the Vegan commanders. When attacking Planet Fleed, Barados built a mountain out of the civilian dead while abducting the women and children. Barados used them as hostages to get Planet Fleed to turn over their best weapons and proceeded to "release" them—by dropping them down miles to shatter upon the ground. Upon taking command of the invasion upon earth, Barados targets civilians to abduct and ties them to his own mecha when engaging Grendizer, killing several just to prove a point and intending on killing them all to secure his victory.
      • Gosaku Ota manga: King Vega, ruler of the Vegan forces, is a brutal conqueror who abandoned most of his people to die on their doomed homeworld, deeming them unworthy of rescue. Conquering world after world, Vega had Planet Fleed annihilated, with the people massacred, converted into Cannon Fodder soldiers, or having the women sent to "service" Vegan officers. On Earth, Vega commands widespread destruction from his forces, and when he takes command, intends to set off every nuke in the world to exterminate all life on the planet, something which horrifies even other Vegan commanders like the ruthless Zuril.
    • Mazinger Z: Infinity: Dr. Hell, stripped of all redeeming qualities, is a ruthless Mad Scientist who sees the world as imperfect and flawed. Deciding to return and create a new world, Dr. Hell erases an entire city to try to get at Mazinger before attempting to murder Testuya Tsurugi after coldly trying to deprive him of all hope. In the ensuing battle, Dr. Hell attempts to annihilate the universe and all that lives just so he can recreate it as the new god, not even showing any care or remorse when his loyal servants die in combat for him.
    • God Mazinger manga: Prince Eldo is the prince of the brutal alien Dragonia Empire and son of the Golden King Dorado. Introduced saving a girl from cannibal rapists, Eldo broughts her to his castle where he strips her naked before using a machine to turn her into a cat-human hybrid to be his pet. Unwilling to use the mask of his father and persuaded by his assistant, Eldo decides to end the war between Dragonia and Mu quickly and breaks the only rule given by his father. Unleashing the alien army the Megalo, Dragonia's forbidden weapons, Eldo uses the chemical, atomic and laser weapons on the Mu's army while enjoying the massacre, and congratulating himself for it before trying to capture the Princess Aila Mu to turn her into his captive. Lacking his father's desire to save his people, Eldo is called out on his actions by him, who is horrified at his actions.
  • Metal Armor Dragonar: General Dorchenov is a high-ranking, brutal member of the Giganos Empire who pushes his leader Marshall Guiltorre to worse deeds, including advocating for a group of Earthling demonstrators to be massacred. When he reveals his super weapon, the Lava Gun, to cause mass casualties on Earth, a disgusted Guiltorre rebukes him, resulting in Dorchenov murdering him, framing the heroic Giganos pilot Meio Plato of the crime and seizing control of the Giganos empire. Dorchenov proceeds to brutalize the Earth, ordering as much death be brought to he planet as possible. When he loses the advantage, he orders his own men to initiate suicidal tactics and takes advantage of an attempted cease-fire to kill even more of Earth's forces, taking the hero Kaine's mother hostage to gain a greater advantage, admitting he cares nothing for the cause of Giganos as long as he can win in the end.
  • Metroid: These Space Pirates have done their best to be the worst of the worst.
    • Metroid (Manga):
      • Ridley, Arch-Enemy of Samus Aran, is the monstrous, dragon-like military commander and security chief of the Space Pirates, and is the most brutal, vicious and monstrous member of the organization. He is introduced attacking Samus Aran's home colony, and immediately gave orders to his men to slaughter everything in sight and enjoy it to the fullest. When the three-year-old Samus tried to befriend him, Ridley attempted to murder her, killing her mother when she tried to save her daughter. After Samus's father sacrificed himself to destroy Ridley's ship, nearly killing him, Ridley survived by eating the corpse of Samus's mother to heal himself, a fact he later uses to mock Samus. A veteran raider, Ridley has slaughtered dozens of innocent colonies and was the one responsible for annihilating the last of the benevolent Chozo race who had rescued and raised the child Samus. Driven by a relentless and mutual hatred of Samus and his desire to destroy and kill whatever he can sink his claws into, Ridley is one of the most feared beings in the universe and a sadist of the highest order.
      • Mother Brain was an advanced A.I. who was initially created with peaceful intentions by the dying race known as Chozo, but grew a god complex from her role. In order to take the universe for herself, she trained an orphan named Samus Aran to become her own personal Tyke-Bomb and then allies herself with the vicious Space Pirates while letting them attack the Chozo planet, Zebes, as she felt that she already surpassed the Chozo in terms of intelligence. After Samus discovers Mother Brain's plans in horror, she attempts to manipulate her into joining her side, and when one of the Chozo rebelled against her, she uses the leader of the Space Pirates to kill him. After Samus returned to Planet Zebes during the "Zero Mission" incident, it was revealed that Mother Brain intends to use a dangerous substance known as Metroid and pit the Space Pirates and the Galactic Force members against each other in order to reshape the universe in her own vision.
    • Metroid Prime: Episode of Aether: In this manga adaptation of Metroid Prime 2, "Boss", the unnamed Space Pirate leader, raids the space ship Crest and tries, alongside his crew, to hijack it, killing a civilian who happened to be there. When the Crest Captain begs "Boss" for mercy, the Space Pirate overhears a worried child calming his sister down, saying that help is on the way. "Boss" torments them as much as possible before trying to murder them, as well as everyone else on board the ship, laughing at the older child trying to protect his younger sibling. When Samus comes to the rescue, "Boss" holds one of the children and the Crest Captain hostage and when Samus aims at him, he throws the hostages, chasing after them with the intent to slice their heads off.
  • Mixim: Dodo is a Monster Clown whose only purpose and drive in life is to devour all he can. Dodo, initially a member of the Big Bang Zero group and one of their four elites, is also the only one to lack any redeeming quality or Freudian Excuse for his actions. What sets Dodo apart is how he devours the populations of planets, including women and children. He relishes in what he does and has no loyalty to his allies. When one of them, Heigar, was injured, Dodo took the chance to devour him. When he encountered two children on one world, he tried to eat them as well, not caring they'd be future allies. In his final battle with the heroes, he even killed the team mascot before trying to kill and devour all the other good guys as well.
  • Mnemosyne:
    • Apos, with his golden hair, crimson eyes, and beautiful features, resembles an angel. The truth is markedly different. Apos is an immortal who finds amusement in suffering and agony. Apos hunts down female immortals and rapes and tortures them physically and mentally to consume their "core" of immortality; the suffering improves the taste. Apos obsesses over the heroine Rin Asogi and has his female subordinate Laura disguise herself as Rin to ruin Rin's name with a series of murders, and also satisfy his lust by raping her. At one point, he brutally crucifies and rapes Rin's best friend and lover Mimi simply because he was bored waiting for Rin's arrival. Apos is behind nearly every evil plot in the series and engineers a plot to turn the world against immortals and turn on itself by causing a nuclear explosion with an immortal seen as a survivor. He then reveals the world tree Yggdrasil to the world to have humanity infected with the time fruits and become immortal so he can harvest them at leisure. Apos betrays Laura and forces Rin to kill her old lover, who Apos had turned into a carnivorous angel, in self defense, before personally executing her current lover—Apos's own father—and attempting to sacrifice Rin to Yggdrasil. When asked what he wants with the world, Apos's response is simple: "I want to taste it!"
    • Sayara Yamanobe is a repulsive, callous scientist, who masterminded the cloning program that killed the original Koki Maeno. She keeps the failed test subjects as ravenous, flesh-eating zombies that suffer every moment they're alive. When she has Rin in her care, Sayara proceeds to molest and then torture her to death while it's more than just implied that she molested and raped Koki as well, also being hinted this is "routine" for her. Sayara later just attempts to wipe out all human life.
  • Mon Colle Knights: Redda is a Fallen Angel who rarely picks fights with characters that are either weaker or stronger than he is, but that's because he doesn't need to. Instead, he prefers to stick with his mastery of manipulation, which he takes pleasure in using on others, especially to the point of driving them to suicide. He also loves subjecting things to disturbing transformations. He even takes Rockna hostage and sticks her inside Dread Dragon's neck and commands it to create a wormhole that sucks all of Mondo's monster friends inside it, leaving Mondo with a Heroic BSoD.
  • Monster: This work, dedicated to exploring whether there is such a thing as pure evil, concludes that while anybody, no matter now heinous, can be redeemed, it is Johan Liebert's refusal to seek redemption that makes him the titular monster. A sadistic chessmaster since he learned to walk and talk, Johan murdered his own foster parents and manipulated over 50 adults and children into massacring each other even as a preteen, and, as an adult, Johan is on a personal journey to become, in his own words, as dark as possible. He is also trying to find out if there is anyone as evil as he is out there, or, failing that, forcing the heroic Dr. Tenma, and/or his own pacifistic sister, Nina Foertner, to kill him in cold blood. In this way, he hopes to establish that even the best people can become just like him. Along the way he convinces children to jump from rooftops; gets a recovering alcoholic drunk before throwing him off a building; sets a highly-occupied library aflame; and convinces various serial killers to murder every foster family he has ever lived with, as part of his quest to become an unperson. In the end, Johan tries to manipulate the population of an entire town into slaughtering each other, and, failing at this, prepares to shoot a child in the head just to torture Tenma. Numerous excuses are proposed for Johan's behavior, yet each one is ultimately undermined, revealing that in the end, Johan simply is pure, unadulterated evil.
  • Monster Rancher:
    • Moo—"Muu" Japanese for darkness or emptiness—was a Super Soldier created by an ancient civilization to win a war. However, Moo realized how powerful he was and viewed himself as too good to be a living weapon, destroying all who wouldn't serve him. Feeding off anger and hatred, Moo turned many monsters into his servants before his battle with the Phoenix ended with his soul sealed into a Mystery Disk. Ages later, Holly's father finds the disk in his search to prove the Phoenix's existence, unintentionally freeing Moo, who possesses the man and feeds off his deep rage at being banished. Seeking his real body to resume his conquest, Moo recruits many monsters with anti-human beliefs to aid him, giving them crests that, if removed or destroyed, will kill the wearer. All humans and monster who do not conform to his views are either killed or enslaved. Realizing the Magic Stone can help him find his body, Moo kidnaps Holly, revealing his identity to her to bring her to his side. Along the way, his crimes include corrupting Tiger's brother Gray Wolf; killing his minions for any reason; and the attempted murder of a little girl after reclaiming his true body. When he is seemingly destroyed, Moo's soul was found by General Durahan in a bid to grow more powerful, only for Durahan to become Moo's new unwilling host, already driven insane from all the hatred he absorbed and aiming to destroy the world. Feared and hated by human and monster alike, Moo stood out in this otherwise fun adventure series as a creature of pure evil.
    • Lilim is General Durahan's right-hand woman and convinces him to betray their master, Moo, and take power for themselves. When first attempting to stop the Searchers and take the Magic Stone, she holds a human baby hostage to force Jagged Hound and Tiger into a fight to the death, then orders it killed once the fight is over. When Jagged Hound seems to emerge victorious, she presents Tiger's Lost Disk to the Searchers and laughs at their despair, then orders them killed, quickly fleeing once it turns out the death was faked and the baby saved. On a later assignment with a Weed to get the Stone, she cruelly wounds him once it's retrieved, then has him gunned down in a display that horrifies the Searchers, who she orders killed in the same way. Lilim soon realizes that Moo is much stronger than Durahan and betrays the General in a bid for more power, killing his frozen soldiers and setting his ship to self-destruct with the Searchers and everyone else onboard.
  • Muhyo and Roji: Of all the villains Muhyo and Roji has encountered, these two came across as the most monstrous:
    • Teeki the Fallen, of the forbidden magic association Ark, manipulates their leader Soratsugu "Enchuu" Madoka by killing his mother and building his hatred. Responsible for nearly all the misery and suffering in the first half of the manga, Teeki disguises himself as various members of Magic Law Association—MLS—in order to manipulate a desperate teacher, Rio Kurotori, and plans to unleash the powers of a book that would kill millions. Toying with the emotions of a troubled girl, Teeki convinces her to join him, promising it will bring her attention from the boy she loves. Releasing all the ghosts sealed in the Arcanum-—and strangling the Executor who discovers him-—Teeki basks in the chaos they cause. In his final battle with the heroes, Teeki orders his pacifistic follower to kill anyone armed with a weapon that can harm him. When the subordinate refuses, he threatens to destroy the sweets holding in his curse, which would end up killing the subordinate and wiping out the heroes. Merging with Enchuu in a final attempt to kill anyone in the way of his plan to cause countless deaths, Teeki remains a bitter monster to the very end. Although his hatred of the MLS is explained by his excommunication from them, Teeki's choice to spread pain and destruction to many innocents cements him as an irredeemably wicked being.
    • Tomas is a former MLS teacher who is wanted for several crimes such as abduction and identity forging. Joining the aforementioned ARK so that he could become immortal, it was revealed that Tomas had a penchant for collecting countless things, including human souls, that he kept in his collections while keeping their consciousness intact, leaving them in constant torment. When ARK members made their move by burning one of the Executor's headquarters, Tomas wastes no time to kidnap said Executor and tortures him with a worm that could turn him into a ghost. When Muhyo and his companions tries to save said Executor, Tomas uses the latter and all of his collections as a personal weapon to attack Muhyo and his companions. Seemingly defeated, he then gained a new body granted by his envoy, planning to use said new body to fulfill his obsession of collecting pretty things in the world.
  • Murder Princess anime: Cecilia is a mysterious black mage who, prior to the main story, in order to test her power, decimated a nearby village, which resulted in one of the villagers, Falis, becoming a bounty hunter. Cecilia also murdered Falis's father in cold blood. Several years later, it was revealed that she gave the information of the lost technology to a humble scientist of the Foreland Kingdom, Doctor Akamashi, which causes said scientist to launch a coup d'etat against the Foreland Kingdom. Cecilia also brainwashed the crown prince of the Foreland Kingdom into becoming a Black Knight in order to gain the power of the lost technology known as Teoria, and when Akamashi tries to seize the power of Teoria for himself, she then executes Akamashi by using the brainwashed prince.
  • Mushiking (Portuguese-EU dub): Adder lacks any of the tragic backstory that his Japanese counterpart had and is behind all the bad things that happen. Seeking to escape from the forest by activating a spaceship, Adder uses all of the life force of all organisms in the forest, result ing vast regions becoming a lifeless wasteland. When one of his servants saw his family vaporized, Adder then lies to him by saying that it was all the main character's fault. After this, he released the red-eyed beetles to cause more death and misery towards other ecosystem. Due to his spaceship needing a seal in order to activate it, Adder sends his mercenaries to the protagonists to retrieve said seal and tries to enslave one of the protagonists—who is essentially a child—to pilot his spaceship. After the seal denied Adder the ability tp pilot the spaceship, Adder then tries to murder everyone who is aboard on the ship out of spite.
  • MW: Michio Yuki is a manipulative blackmailer, bisexual rapist, kidnapper, and murderer. In one chapter, he seduces and kills, for sexual thrills, the daughter of the president of the bank he works at, fakes her kidnapping, anonymously extorts ransom money from her parents, then robs her father's bank and pins the robbery on the dead girl by impersonating her, finally killing her father by making him lose his grip on a precipice by throwing lit matches into his mouth. His crowning achievement is stealing a classified military neurotoxin, the titular MW, and trying to slaughter as many people as he can with it as vengeance for his own mortality.
  • The Mysterious Cities of Gold:
    • Conquistador Francisco Pizarro is the conqueror of the Incan Empire and a cruel, greedy man out for his own enrichment. Seeking the Cities of Gold, Pizarro tries to have entire villages razed and to kill or enslave young Esteban and his friends. Taking over the Incas, Pizarro forces them into slavery and massacres a great deal of them, wiping out their empire to establish control. Ostensibly loyal to the Spanish crown, Pizarro's only true loyalty is to himself and his insatiable greed.
    • King Menator is the cruel ruler of the Olmecs, an underground race seeking immortality. Tyrannizing many of the local tribes, Menator kills and harvests countless innocents for their skin cells to rejuvenate himself and the Olmecs, trying to have Esteban and his friends subject to the same fate and ordering an entire village massacred when they escape into its borders. Menator seeks the Cities of Gold for its priceless technology, using his flying weapon to vaporize many of the Mayans—whom he regards as utterly inferior—when they rise up against him, and even horribly beating the young Tao against a cliff side with the threat of killing him if he's not allowed access to the Cities of Gold. Though preaching everything he does is for the benefit of his race, Menator only intends to preserve those "worthy" while dismissing the lives of the rest and even his own loyal soldiers, intent only on taking what he can and killing everyone else in his way.
  • Nabari no Ou: Miharu's seemingly-aloof ally, Fuuma Kotarou, is the true mastermind behind the tragedy surrounding the former's life. A 117-year-old ninja with shapeshifting powers, he manipulates multiple important people to obtain the Shinrabanshou so he can become God. Posing as Inasa, he founds Kasa and uses the organization to train children and teenagers into becoming his expendable assassins. A decade before the story, he brutally killed a four-year-old Miharu in front of his mother, hoping to drive the latter to despair. In the story's climax, he betrays and murders his partner, before trying to steal the Shinranbanshou from Miharu—knowing doing so would kill Miharu—and tortures Tobari while he orders his servants to kill all of Miharu's friends.
  • Naruto, while idealistic, does have a few irredeemable characters, who surpass all the others in heinousness:
    • Hidan, a member of a Religion of Evil, worships violence and death, and sees mercy—or anything other than full-scale slaughter—as a sin. He and his partner, Kakuzu, corner and capture the Two-Tails jinchūriki, Yugito Ni, delivering her to Pain for draining and, eventually, death. The two of them subsequently slaughtered a temple's worth of monks in order to collect the bounty on the head monk, Chiriku. During the battle at the bounty station, Hidan engaged Asuma Sarutobi in combat, and used a religious ritual to bind their souls together, then began mutilating himself in order to torture Asuma, ultimately leading to the Leaf Ninja's painful death. When Asuma's student Shikamaru confronted Hidan, Hidan mocked his mentor's memory, and attempted to inflict the same fate on Shikamaru.
    • Legend of the Stone of Gelel: Haido was first introduced hoping to use the Stone of Gelel to create a utopia, but in fact just wants the power. Years ago, after learning about the Stone of Gelel, hoping to find it, he attacked Temujin's village, with he and his men murdering all of the adults, including Temujin's parents. He decided to spare the children, but only because they would be more useful to him alive. Seeing Temujin's potential, he made the boy his apprentice and put one piece of the Stone in his chest while convincing the children to place their souls in armored suits, becoming mindless soldiers he had complete control over. He convinces them that killing and sacrificing their bodies are necessary, and uses them to attack entire villages in the Land of Winds while trying to find the Stone. In the climax, after reaching the Mines of Gelel, he starts assaulting everyone. Temujin tries to intervene, but when he finally recognize his parents' killer, Haido mocks Temujin for not realizing it sooner and forcibly takes the crystal he gave out of Temujin's chest, declaring him a pawn no longer useful. Transforming into a more monstrous state, he proclaims he will use his new power to enslave the world. Using lies to get away with murder, cruelty and claiming power, Haido was a depraved monster whose transformation only highlighted the ugliness he hid from others.
    • Shippuden anime-exclusive characters:
      • Twelve Guardian Ninja Arc: Kazuma, also known as Furido, is a former member of the Twelve Guardian Ninjas and was a friend and comrade of Asuma Sarutobi and Chiruku. He saw the Hokage, and by extension, useless and threats to the figurehead Fire Daimyo in the Land of Fire. Originally, he convinced half of his comrades to try to assassinate the Hokage while Asuma stopped him, and seemingly killed him. Years later, after it was revealed he implanted Kurama's chakra into his son to create a weapon to destroy Konoha, he attacks dozens of border towns with his men. After killing thousands of people, he raided the tombs of his former comrades and would use them to make a Weapon of Mass Destruction to incinerate every man, woman, and child in Konoha to the ground, all the while constantly beating and manipulating Sora to turn on his new friends. The people he killed on the border towns were used to create a small-scale Zombie Apocalypse around Konoha to distract, and trap, everyone in the village. Finally, when that plan failed he triggered his son's Super-Powered Evil Side and sent him to destroy Konoha.
      • Power Arc: Disonasu seems to be the kind leader of Hachō Village. In truth, he is a Serial Killer who once collaborated with Orochimaru on Reanimation. Desiring power after a defeat at the hands of Pain, Disonasu teams up with Kabuto in order to acquire the ancient device known as the Ama no Hoko, ordering and participating in a massacre on the nearby Tonika Village to gain the "Sounds" necessary to activate it. When he finds two of the Sounds missing, Disonasu orders Kabuto to attack his own village to find them, resulting in a battle that nearly destroys the whole town in the process. In spite of being aware of the world-destroying power of the Ama no Hoko, Disonasu activates it anyway for the simple reason of wanting to regain the power that he lost long ago.
    • Boruto: Naruto the Movie: Momoshiki Otsutsuki is a member of the ancient Otsutsuki clan who arrives on the Naruto Earth and promptly drains Killer Bee of chakra, leaving him for dead. Intending to harvest all the chakra of Kaguya Otsusuki, which would likely kill every living being with chakra on the planet, Momoshiki attempts to cultivate a new chakra tree to enhance his own power. While the chūnin exams are underway, Momoshiki and his partner Kinshiki Otsutsuki attack the Leaf Village, Momoshiki destroying everything in sight while laughing like a maniac as he targets civilians. Only Naruto's sacrifice saves Momoshiki from annihilating the entire village, and possibly more, with a huge attack. Capturing Naruto, Momoshiki attempts to drain him dry of chakra and shows no remorse in literally eating the loyal Kinshiki for more power, or trying to kill all of Naruto's rescuers, even his twelve-year-old son Boruto.
    • Konoha Shinden: Steam Ninja Scrolls: The Jashinist Ryūki poses as a holy man seeking to help people connect to their loved ones. Behind a series of kidnappings while seducing young women to his sect, Ryūki brings them for a holy ritual, though he intends to poison and offer them as blood sacrifices in a large number to his god Jashin in order to achieve immortality. Despising the peaceful era he exists in, Ryūki gleefully intends to throw the world back to chaos and slaughter, viewing the depraved Jashinist murderer Hidan as the only being worth emulating.
  • Nasuverse:
    • Lunar Legend Tsukihime manga: Michael Roa Valdamjong was once a pure priest who fell in love with the True Ancestor Arcueid Brunestud. Growing to despise her for stealing his "purity", Roa became a parasitic vampire who stole the lives of others, possessing them to take new incarnations, going on vicious murder sprees to steal countless lives in hopes of drawing Arcueid to him to possess or torment her. In his 17th incarnation, Roa possessed a girl named Elesia and used her to rape and murder the people of her village. In the present, Roa incarnates in SHIKI Tohno, intending on killing even more people before going after Arcueid again, disdaining her for being "sullied" from the pure vision he once knew.
    • Fate:
      • Fate/Zero: Ryuunosuke Uryuu is the master of the equally sadistic and twisted Caster, Gilles de Rais, but lacks the latter's care for Jeanne d'Arc, making him worse by comparison. He introduces himself by sacrificing a child to summon a demon and becomes ecstatic when he watches Caster kills said child. It is soon revealed that Ryuunosuke is a Serial Killer of women, children and whole families, whose MO involves luring his victims to Caster, which then proceeds to torture and mutilate them before slowly killing them. When their hideout was discovered and destroyed by Weaver and Rider, Ryuunosuke convinces Caster to summon a demon in Fuyuki City River in an attempt to kill even more innocents. Despite forming a bond with Caster, this is simply a reflection of Ryuunosuke's own murderous traits rather than any genuine care, which he loudly states on using it to cause death on a grand scale, while he won't have to worry about dirtying his own hand. Taking joy in murder, suffering and death, Ryuunosuke is one of the most depraved masters in the history of Holy Grail War.
      • Fate/Apocrypha: Celenike Icecolle Yggdmillenia, amongst the morally ambiguous Yggdmillenia family, is the only one who absolutely has no moral compass. Celenike practices blood magic, sacrificing innocents, including children, which she takes great pleasure in. A sadistic dominatrix, Celenike keeps a dungeon in her spare time where she tortures those who cross her, or just those who catch her fancy for the fun of it. In between missions, Celenike will very regularly torture, rape and murder attractive young men, especially homunculi she deems "useless". Celenike also become fixated on her Servant Astolfo. After becoming jealous that he is forming a bond with Sieg, a homunculus who has formed an identity, Celenike snaps and uses her Command Seals to force Astolfo to gruesomely murder Sieg just to break Astolfo. Unlike her other family members and many other antagonists from the franchise, Celenike is motivated by nothing more than cruel lust and unrestrained sadism.
  • Necromancer: Even in this dark manga, these two stand out as the worst Slum Street has to offer:
    • Detective Ricott's unnamed superior, from "Way to Attain", appears to be a kind, upstanding policeman, when in actuality, he's the leader of a child trafficking ring where he kidnaps children from Slum Street to be sold for money. When the thief Lito continuously saves the children, the superior has Lito framed for human trafficking and has him executed. When Ricott discovers the superior's plot, the superior tries to kill her and the resurrected Lito. while the latter tries to save his captured young sister.
    • Jack the Ripper, from the "An Ugly Guardian" arc, is a psychotic Serial Killer who decapitates people she finds beautiful and keeps their heads in jars as a way to admire their beauty. Having done this to 29 people, including a widower who showed appreciation to the Grave Keeper, Jack tries to make Detective Ricott her next victim, mocking the Grave Keeper for ever thinking that the widow could ever love him.
  • Ne0;lation, by Tomohide Hirao & Mizuki Yoda: The Cracker code-named the "Beast of Gevaudan" is a genius hacker and Ne0's Arch-Enemy. Proclaiming himself as a crime consultant, assists several criminals, such as becoming a secret sponsor of "The Lemming Game", which causes several people to commit mass suicides; helping a street racer with his illegal activity, and even helping a politician to spread fake news to eliminate his rivals. When one of the criminals failed to meet his expectations, he brutally murders said criminal. When Ne0 attempts to stop Gevaudan, the latter, in order to spite Neo, erases all of Neo's footage of Gevaudan's murder of a hacker Lemming.
  • Nidome no Yuusha: Princess Alesia is the one responsible for summoning Ueki Kaito to her world. In the prologue, after having him save their world, Alesia reveals her true colors, spending a year hunting him down like an animal for her own sick pleasure before succeeding at stabbing him to death with her comrades. Upon Kaito's return, he learns Alesia sacrificed 200 beastmen slaves to summon him, while also condemning 5 of his relatives to horrific deaths. Sickeningly racist, Alesia orders bloody purges of anything with less than 100 percent human blood, even having a village butchered so the souls can be offered to a powerful demon for her benefit. Alesia promotes brutal slavery throughout the land, and when she confronts Kaito, gleefully states she'd happily have him impregnate some beast-man sex-slaves and kill the newborn children right before him.
  • Night Warriors: Darkstalker's Revenge: Pyron is a malevolent alien being who travels from world to world for fighting and excitement, inevitably destroying them when they fail to meet his expectations. Arriving on Earth, Pyron announces himself by annihilating populated towns with the warning to entertain him or risk death. Pyron proceeds to kill multiple defenders of Earth in the ensuing fight, gleefully tormenting the hero Donovan, and when Donovan manages to stand up to him Pyron attempts to wipe out the world and everyone in it out of spite.
  • Ninja Gaiden: In the anime movie based on the original NES trilogy, Professor Bucky-Wise is a seemingly-nice man who was really the hidden villain pulling the strings. Bucky-Wise recorded a power surge when Ryu Hayabusa defeated a powerful demon, managing to capture some of its power. He forces his colleague Ned Friedman to help him perform bizarre experiments by kidnapping his daughter Katherine, using the demon's power to create an army of genetically altered creatures. Bucky-Wise is experimenting on humans, as Ryu and his friends discover that one of his labs has babies in jars and a twisted, mutilated dead creature on the ground. Bucky-Wise has his monsters attack Ryu and, when they fail to kill him, he kidnaps Ryu's girlfriend, Irene Lew. Ryu goes to Ned Friedman's corporation, believing he kidnapped her. Ryu confronts Ned, but Bucky-Wise kills him, stating he is no longer useful to him. Bucky-Wise then tells Ryu he plans to release the same demon Ryu defeated on the world,not caring that this demon has the power to destroy humanity. Ryu kills Bucky-Wise and frees Katherine, but not before Bucky-Wise transferred some of the demon's power to her, making her a vessel for the demon.
  • Ninja Resurrection OVA: Mori Soiken is the chief strategist for Amakusa Shirō, aka Jesus Christ. Planning to create a Hell on Earth, Soiken tries to get Jesus to be reborn as Satan by destroying his idealism, doing so by killing two young girls he knew and framing Yagyu Jubei for the murders. Forcing Jesus into having sex with his daughter Ocho, Soiken leaves the injured Jesus to be killed by the Tokugawa. Resurrecting Jesus into Satan at the cost of Ocho, he unleashes him and his squad of demonic warriors to start a global attack on humanity.
  • Ninja Scroll:
    • Gemma Himuro is the leader of the Eight Devils of Kimon, and stands out from his men in his callous disregard for all around him. In the past, Gemma betrayed his allies and framed a warrior named Jubei Kibigami, forcing Jubei to kill his friends in self defense. In the present, to cover for the Eight Devils' movements, Gemma has a well poisoned to wipe out a village. He organizes multiple massacres and kills his employer, declaring he himself will be the true ruler of Japan in the end. Gemma also kills Jubei's beloved, Kagero, in front of him, solely to hurt Jubei. Gemma, in the end, cares for nobody. The deaths of both his lovers in the Eight Devils arouse no emotion in him, and he witnesses every ally he has die without even changing an expression. His only concern is the gold imported to Japan, all to feed his bottomless greed.
    • Tessai is, hands down, the most violent, brutal and nasty of the Eight Devils of Kimon. A hulking brute of a man with skin he can harden into rock, Tessai is introduced butchering a group of shinobi who are investigating the village he and his seven comrades poisoned to manufacture rumors of a plague. The leader, Hanza, is caught by Tessai and killed sadistically as Tessai slowly rips his arms off with his bare hands before drinking the blood from the severed arms. Leaving only the sole woman of the group alive, Tessai takes her to his home and attempts to rape her, informing her not to struggle because "he wouldn't mind raping a dead girl." When Kagero is rescued by Jubei, a humiliated Tessai later makes it a point to hunt down Jubei and attempt to beat him to death in retribution.
  • Noir: Shao-Li, a assassin for the Triads, is infamous for her poisonous methods and remorseless attitude towards her kills, receiving the nickname "The Cold-Blooded Killer". Introduced after one of her assassinations, Shao-Li is called by her forces to help deal with the duo assassin Noir and the Soldats due to their presence in Hong Kong. Tracking them down by using an informant, she leads a charge to kill the two hired killers and eliminate the informant, since he's no longer of any use to them. When Noir was able to fight off the attackers, she retreats and returns to his employers only to kill them off herself so she could realign with the Soldats and save herself. Approaching them, she was immediately rejected due to her history of backstabbing, and in retaliation Shao-Li tries to kill their representative. Even to the ruthless and unscrupulous Soldats, Shao-Li was seen as nothing more but a deadly poison for anyone and everyone.
  • Now and Then, Here and There: King Hamdo plunders resources from a desperate land and kidnaps children to use as soldiers in his army. Introduced strangling his own cat to death, Hamdo reacts with psychotic glee upon learning his men have found a girl who possesses an amulet capable of creating water, a precious resource in his time. When he discovers she's lost said amulet and refuses to help him find it, Hamdo flies into a rage and is implied to rape her. So cowardly that any threat to his life sends him into a panic, Hamdo orders his second-in-command to fire upon the frontline, not caring that his own Child Soldiers are engaged in combat.
  • Nura: Rise of the Yokai Clan: Sanmoto Gorozaemon is initially a member of Hagoromo Gitsune's entourage, but in truth pursues his own agenda. Formerly a human merchant in old Edo and suffering from boredom, he opted to dabble into the dark Hundred Tales' clan's power to unleash a swarm of Yokai (supernatural creatures) that terrorized the nation through indiscriminate killing while Sanmoto brainwashed high ranking officials into his own personal cult. When cornered by the past hero Rihan Nura, Sanmoto opted to become a Yokai himself, resulting in even more death and destruction. In the future, Sanmoto secretly worked with the true Big Bad Abe no Seimei, transforming Rihan's first wife into an assassin to murder him in a child form, gloating over how she murdered the man she had loved while looking like the child the two could never have. Unlike most of the villains who either brainwashed or had aspirations of creating a paradise for yokai, Sanmoto was merely a vulgar man with a god complex who terrorized Edo for his own greedy ambitions. Even a side story delves into how vile he is: when he is rejected by a lady who disliked him, he responded by killing off her family and friends and then picked her up when she was destitute and mentally scarred from the ordeal.
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