Complete Monster/Cartoon Network

""You are alone, child. There is only darkness for you, and only death for your people. These ancients are just the beginning. I will command a great and terrible army... and we will sail to a billion worlds. We will sail until every light has been extinguished. You are strong, child. But I am beyond strength. I am the end. And I have come for you, Finn." —The Lich to Finn, Adventure Time, "Escape from the Citadel""

While most villains from Cartoon Network and Adult Swim are mostly Jerkasses at their worst, there are some who take their villainy to the next level. Ben 10 and it's shared universe have their own page.

Adult Swim
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 * Metalocalypse has Eric von Weichlinghammer, played by Ihsahn of the black metal band Emperor, who makes "special leather" from the skin of models.
 * To put that in perspective, this is a band that is routinely (indirectly) responsible for mass deaths on a global scale. Seeing him working is their Nightmare Fuel.
 * Moral Orel actually has one clear-cut example, but surprisingly it's not Clay Puppington, it's Cecil Creepler. He's a pedophile ice cream man who tries to lure kids into his van with treats. One of his intended victims is Shapey, a seven-year old with a mental age of three. Season Three really pushes him into this with the reveal that he's also a serial rapist who specifically targets dark haired women and Miss Sculptham dyed her hair to lure him out. The episode was so dark it partially led to the series being cancelled.
 * From Rick and Morty, King Jellybean was the former ruler of a village Rick and Morty saved from poverty who was secretly a monstrous pedophile who attacked and raped children for pleasure as a hobby whenever he felt he could get away with it. Unlike most other antagonistic characters on the show, King Jellybean was NOT played for laughs at all, as he pretends to offer advice to Morty before dragging him into a bathroom stall and trying to rape him in a moment that is very uncomfortable and traumatic for Morty. When Morty tells Rick what happened to him, Rick is so disgusted that he casually kills King Jellybean without hesitation just before they leave his village behind.
 * Samurai Jack:
 * In the Darker and Edgier fifth and final season, the High Priestess is the leader of the Cult of Aku, and a fanatical zealot dedicated solely to appeasing the dark god she worships by any means necessary. Drinking Aku's essence and giving birth to septuplets with Aku's dark energy within them, the High Priestess dubs them the Daughters of Aku and proceeds to horribly condition them into unfeeling weapons who's sole purpose is to kill Samurai Jack. The High Priestess systematically abuses them for years on end, searing their flesh with hot coals while they're still young and putting them through brutal, life-or-death training routines where every slight distraction means torture and beatings — sometimes simply for things as minor as looking outside. Having the Daughters graduate by having them massacre her own devoted followers, the High Priestess sends the Daughters into the world to kill Jack and callously brushes off the deaths of most of them at Jack's hand, even furiously attempting to kill Ashi, her only surviving daughter, with her own hands after she finally turns on the High Priestess and sides with Jack. An unfeeling fanatic who'd sold her soul to darkness and is able to rival her own dark god in evil, the High Priestess justifies her cruelty simply by stating Jack must die at any cost, even if that cost is her own flesh and blood.
 * In that same season, the Dominator is a sadistic Torture Technician seemingly motivated purely by a desire to hurt people. Slaughtering a village of innocents and abducting all of their children, the Dominator painfully transforms all of the children into psychotic killing machines to be used as weapons, and tests them out on Jack and Ashi once they try to retrieve the children, with complete knowledge Jack's refusal to hurt innocents makes him easy prey. The Dominator brutally tortures Ashi upon capturing her with clear lascivious intent, gloating that children are easily manipulated tools — and that Jack's refusal to hurt them only makes him a "righteous fool."
 * Dan Halen from Squidbillies. He is, in one episode, actually called the personification of evil and a blight on the human race that predates recorded history. Actual examples are shown, such as being a ranking officer in Hitler's Third Reich, spreading the bubonic plague in medieval Europe, causing the extinction of the dinosaurs, and nailing Jesus to the cross. He also overloaded the Large Hadron Collider to intentionally create a black hole to dispose of a prostitute's body, then throws his own mother in as an afterthought.

"Dan Halen: Do you think this is the only illegal thing I have to do today?"


 * The Venture Brothers:
 * Dr. Jonas Venture is the self-absorbed and abusive father of Thaddeus "Rusty" Venture who poses as a noble and beloved adventurer and scientist. Taking Rusty on dangerous adventures since he was three years old, Jonas allowed him to be trapped, tortured and put in harm's way, to allow himself the excitement of "rescuing" Rusty as the hero. When working on scientific inventions, Jonas frequently grew bored of his works with dire consequences, in one instance leaving a group of orphans to suffer drug-induced nightmares after an A.I. he created ran rampant, much to Jonas's apathy. His own team meaning nothing to him, Jonas viewed his bodyguard as property, taking him from his "best friend" Blue Morpho as "payment", and turned another into a violent Blood Knight by forcing him to use dangerous drugs. Ruining Morpho's life, Jonas coerces the happily married man into an orgy, then blackmails Morpho with the knowledge and forces him to do his dirty work, and later resurrects Morpho into a cyborg slave, which earned the disgust of his team. After spending several decades in a mostly-dead state, Jonas attempts to have the cyborg Morpho killed so that he may steal his body for himself, and then flies into a rage and tries to do it himself once this order is refused. Killing any villains he grows bored of, Jonas shows under the exterior of grand heroics he paints himself with to be an utterly despicable Psychopathic Manchild.
 * On the surface, Professor Impossible is a dorky Mr. Fantastic Expy. But then you find out he keeps his wife isolated because her powers were useless to him. When Rusty Venture nearly has an affair with his wife, Impossible responds by leaving him to die in the cold. Brock is barely able to save him, and when he tries to get Ventures' son, Hank, treatment (he'd recently swallowed a serum that made him a living bomb), rather than help him, he was ready to shoot. In his second appearance, he's still keeping Sally imprisoned and acting artificial and cold towards his own infant son, to the point of forgetting he even exists. Then he breaks down when his wife finally leaves him and is coerced into becoming a supervillain by Phantom Limb, who says it's not much of a stretch for Impossible. He's not joking. A later episode reveals that he's been using Sally's brother Cody, who's skin bursts into flames when it comes into contact with air, as a power source by constantly keeping him awake, and therefore in constant pain. And he doesn't even show the slightest hint of guilt for any of this. Bastard.

Cartoon Network
"Helga: Do you like the coat? It's genuine lawyer."
 * Adventure Time:
 * The Lich is an evil, ancient sorcerer and the "last scholar of GOLB", who returns time and time again from seeming destruction focused solely on one thing: the destruction of all life. First mentioned in passing at the end of Season 1, in reference to his defeat at the hands of the hero Billy, we meet him in person in the Season 2 finale. He's an Omnicidal Maniac, not because of some great tragedy in his past that's explained to us - he just wants to wipe out all life. He almost takes control of Finn with his Compelling Voice and takes up Body Surfing at the destruction of his physical body, turning Princess Bubblegum into an Attack of the 50-Foot Whatever Eldritch Abomination. He later ends up killing and possessing the body of as part of a complex gambit to get a Reality Warper to grant his wish for the extinction of all life across The Multiverse; murdering dream Prismo as well as Prismo's physical body, the latter solely For the Evulz, then breaking the universe's worst criminals our of their cosmic jail, all in order to create an unstoppable army for himself to lead in wiping out all life, one planet at a time. He ends up getting turned into a harmless baby named Sweet P afterwards, but even then, a version of the Lich from a parallel reality manipulated that world's version of Finn to gain access to the multiverse and build up a mountain of broken bodies, even mentally torturing Sweet P for nights on end to try and turn him back into another of himself as his last scheme. The Lich is also heavily implied to have been involved with the destruction of mankind and one of the reasons why the show takes place in a world After the End, as his ongoing quest is to eradicate all life forms simply because he desires to be the end of all things, and unlike GOLB's other spawn, the Lich is fully sentient and aware of what he does. Permanently changing the tone of a once-zany show with his presence, the Lich and his endless devotion to death immortalize him as the most horrifying villain in the series.
 * The Lich is as vile in the comic book canon as he is in the cartoon, continuing his crusade to destroy all life after his defeat in Princess Bubblegum's body, taking physical form again to use a Bag of Holding to suck up thousands across Ooo, with the ultimate intent to suck up the entire planet and throw it all into the sun. Even destroyed, the remnants of the Lich's power continue to horrify and torment Finn, with an echo of the Lich's power creating a dungeon to Mind Rape the heroes — taunting the Ice King/Simon Petrikov with an image of his old love Betty and forcing him to watch as she fell apart in hopes of it breaking his spirit and driving him to suicide — and twisted a sentient tree into a horrible monster, both in preparation to eventually recuperate and destroy life again.
 * Dr. Gross, from season 7's "Preboot" and season 8's "Islands" miniseries, was formerly a scientist and doctor on the series of islands founded by Minerva Campbell as a refuge for the remnants of humanity, training children to become "Seekers", with no hesitation in brainwashing them and having them brutalize their own friends to prevent any escape from the islands. Dr. Gross eventually turned to twisted experiments on sentient beings, with her recklessness accidentally unleashing a virus that killed off two-thirds of all humanity on the islands—to her complete apathy. Escaping the islands, Gross continued her experiments, scheming to return to the islands and forcibly augment all humanity into cybernetic abominations like herself, even trying to cut apart Finn and his friends to use as raw material. An unfeeling scientist with zero empathy, Dr. Gross proves that, sometimes, Humans Are the Real Monsters.
 * In Code Lyoko, XANA is a rogue multi-agent program living on the virtual world Lyoko that evolved to the point of achieving sapience. Gaining a desire to rule over and/or destroy humanity, XANA tries to kill his creator, Franz Hopper, as well as his daughter Aelita. Trapped inside the supercomputer for a decade, once revived, XANA regularly launches many vicious schemes upon the real world, not caring about the sheer amounts of potential casualties that would result from the attacks. XANA shifts strategies to absorbing Aelita's memory to gain the power to leave the supercomputer and into the network, the success of which nearly killing Aelita in the process. Using the internet to access supercomputers across the world, XANA gradually builds a robot army to rule over humanity. In the mean time, XANA tries and almost succeeds in destroying Lyoko, taking William as his personal avatar and slave to his will. When Lyoko is revived, XANA decides to lure out and kill Franz Hopper by using Aelita as bait and plans on keeping the latter as his eternal prisoner. In the one episode where he appears before the heroes, XANA shows sadistic enjoyment in trying to kill them all.
 * Katz. Since the show has Negative Continuity, his motives tend to change. In his first appearance, he ran a Hell Hotel where he fed all his guests to spiders for no explained reason. In a later episode, he ran a health spa where he transformed his guests into machines and forced them to fight for his own amusement. There was also that one time he got tired of winning second place at the annual sweets baking contest. His plan to prevent this from happening? Kidnapping the champion and turn her into taffy. In all of these appearances, he didn't seem to get much gain for these action, but did them all with a Slasher Smile on his face. And for the record, what does he do when Courage escapes the prison and beats his death trap? Tries to strangle him with his bare hands. In short, he's an Ax Crazy Serial Killer played straight...on a kid's show!
 * "The Great Fusilli" gives us the titular crocodilian himself. Fusilli initially seems like a charming (if somewhat sinister) traveling magician taking his show on the road, and allows Courage as well as his owners Eustace and Muriel to perform for an imaginary audience. However, his true evil nature is revealed when Courage stumbles upon a back room full of lifeless human puppets. It turns out that Fusilli is a Serial Killer of sorts who uses enchanted strings that turn people into lifeless puppets, effectively killing them so he can play around with their lifeless bodies for his entertainment. As one would expect Courage defeats the villainous magician, but not before Eustace and Muriel have been turned into puppets, leaving Courage to essentially play with their lifeless bodies in order to pretend that they're still alive. Thankfully negative continuity is in effect, but it's still considered to be among the darkest, creepiest, and most downright disturbing episodes in the series for a very good reason.
 * From "The Quilt Club", Eliza and Elisa, known as the Stitch Sisters, are the owners of an antique quilt shop and reclusive quilting club who make Muriel work day and night to pass the standards they use to admit those into their club. The club itself is a front; since the dawn of humanity the Sisters have walked the Earth, ensnaring the souls of women to prolong their own youth and binding them forever to their quilt. The souls of their victims are kept within the quilt for centuries on end, forever ripped of everything that once made them unique.
 * What truly separates this guy from all the other often Jerkass characters from the show is not only that he's a grown man and a true sadist, but it's that he deals in psychological abuse coupled with the physical abuse, which is only animated in a cartoonishly animated slapstick manner to avoid showing how brutal such treatment would truly look. (And even then, the bruises Eddy receives from the beatdown look very severe!) To drive the point further home, the cul-de-sac kids had spent the entire movie chasing the Edds down take revenge on them. After seeing Eddy's brother do this to him and Edd, they . Even the Kanker Sisters are disgusted by him.
 * Oh, and where does all this transpire? Where does this guy live? A trailer at an amusement park. Yes, the implication is obvious: he gets to torment kids every single day. His whole LIFE is just getting off on bullying those smaller and weaker than him.
 * Green Lantern the Animated Series:
 * Myglom is a seemingly moral warden of a Green Lantern prison, but is in actuality a sadist who masks his villainy as a "rehabilitation program". Myglom subjects dozens of prisoners to a Mind Rape machine that makes them relive their worst memories over and over again before webbing them up to be devoured at his leisure. When Hal Jordan and Kilowog deliver the Red Lantern Razer to Myglom's prison, Myglom subjects Razer to the same torments of his other prisoners, and when Hal and Kilowog realize Myglom's villainy, he captures them and plans to eat them alive after using his nightmarish machine on them.
 * Prince Ragnar, brother of Queen Iolande, is an unfathomably petty, spiteful narcissist. Craving the power of a Lantern so as to rule his world, he poisoned his life-long mentor Dulok to get his Lantern ring and later tried to do the same to Kilowog, believing himself the only one worthy of its power, before attempting to slit his own sister's throat to ensure if he couldn't rule, neither could she. In his second appearance, Ragnar's rage earns him a place in the Red Lanterns ranks, taking over his world with them and waging war on any resistance. He would then have the Red Lantern Corps plant a "Liberator" on his world, intending to exterminate his own people of 2 billion lives, simply to spite them all for not wanting him as a ruler.
 * The Anti-Monitor is an Omnicidal Maniac obsessed with nothing less than the obliteration of everything in the universe that isn't himself. Built to be a knowledge-gathering robot, the Anti-Monitor quickly realized his superiority to all life in the cosmos, and was banished to another dimension soon after his proclamation to destroy everything in his path. The Anti-Monitor proceeded to turn trillions of planets in this alternate dimension into antimatter which he then consumed to make himself stronger, and, though making a deal with the last remaining planet's population to not consume them should they build him a portal back to his own dimension, the Anti-Monitor drained their sun of nearly all its life before he left, ensuring that the planet would still die soon after he was gone. Once back in his home dimension, the Anti-Monitor reactivates the Manhunter robots across the universe and orders them to kill everything they see, and, when confronted by Hal Jordan, tries to force him to watch as first his friends, then entire worlds, are consumed before him. Even when beaten, the Anti-Monitor desperately tries to strike a deal with Aya to assist her in her plans to destroy reality itself to save his own hide. A megalomaniac who couldn't stand anything living except himself, the Anti-Monitor's narcissism was only matched by his petty sadism.
 * Hero: 108: Twin Masters is a malevolent entity who wishes to plunge the Hidden Kingdom into everlasting chaos. Originally a prince with aspirations of conquest, Twin Masters had since become a master of chaos energy, altering their plans to decimate the Hidden Kingdom and lord over the remains as a despot. Several of Twin Masters's plans are designed to cause massive damage, including forcing Oyster-Rahmas into draining the oceans; trying to revert all life to its prehistoric state; changing the course of an asteroid to crash into Hidden Kingdom; creating a chaotic storm with Mighty Ray's eyes; and, in the finale, absorbing all life energy into themselves as well as condemning their former minions to die alongside Hidden Kingdom. Forming a deep hatred for First Squad—Lin Chung in particular—Twin Masters corrupts Commander ApeTrully with their chaos energy and forces him to attack First Squad against his will. Drunk on their love for carnage and destruction, Twin Masters darkened the setting of an otherwise lighthearted show.
 * Krytus, the 3rd Big Bad from Hot Wheels Battle Force 5. He's known as the most malicious being in the entire multiverse (this was said by another Big Bad!) and evil incarnate. He restarted a eons old war between the Red and Blue Sentients simply because he saw the Blues as weak and inferior and desired to conquer the entire multiverse. When Sage froze the Red Sentients, the war continued and Krytus carried out a genocide on the Blues. At one point, it's revealed that he had several thousand Blue Sentients tortured to death and the one who managed to enter hibernation to escape him was punished by having his body sabotaged, dooming him when he woke up. Krytus's first action after being freed from his prison is to throw the one who released him off a cliff! He then spends most of the series trying to kill Sage (his own sister), who is a pacifist who only wants peace. At one point, after being forced into an Enemy Mine with Vert to escape the Shadow Zone, he sets up an ambush for Vert the moment they're out of it, unlike previous villains who normally had the honor to let the Battle Force 5 go after an Enemy Mine. Not even the other villains are safe from his wrath, as he starts an Enemy Civil War among the Vandals through Grimian. But what solidifies this is at the season finale, when he and Sage finally have a confrontation. After asking Sage Was It Really Worth It? to imprison the Red Sentients, she replies that if she hadn't, Krytus would've endangered not only the Blue Sentients, but the entire multiverse. Krytus actually agrees with her, fully admitting that not only does he know what he's doing is evil and wrong, he doesn't care so long as he can conquer the multiverse. The only reason he tried to free the Red Sentients was because he wanted an army to conquer the multiverse with, not out of concern for them.
 * Jonny Quest: The Real Adventures:
 * "Rock of Rages" & "General Winter": General Vostok is a frozen-cold ex-KGB terrorist who yearns for a world "free of having to make decisions." Vostok introduces himself icily murdering two treasure hunters to procure a destructive golem with which he attempts to assassinate the President of the Czech Republic, and later attempts to create a flash-freezing superweapon he first tests by flash-freezing a base full of soldiers to death. Vostok strong-arms a scientist friend of Dr. Benton Quest into perfecting the device, and when the scientist chafes, Vostok shoots him dead in front of Quest to hurt him. Vostok appears one last time in the comics where he attempts to convert a nuclear reactor into the world's most potent nuclear weapon, one he spitefully attempts to set off when foiled heedless of all the lives—all of his own men included—he'll waste in the process.
 * James Compton, from "AMOK", is a former special forces operative thought killed-in-action but now working as a freelance mercenary for whoever can hire him. Paid by a private party to investigate a hindrance to the drug trade in Borneo, Compton assumes the identity of "Mitchell Stramm" after his party is seemingly wiped out by the native Amok monster, winning his way into the Quest's family's good graces and finding the village that's been disrupting the drug trade. Smugly betraying the Quests at this point, Compton opts to simply massacre every last native man, woman, and child in the village to remove them as an obstacle, gloating that his employers will pay him handsomely for each head he brings back to them, attached to the bodies or not.
 * The succubus/vampire known as Elise Lenior from "Eclipse." Appearing as an innocent young woman on the run from evil men, Elise maintained her youth and beauty by draining the life from beautiful, innocent women. The man hunting her had lost his sister to her years past. Elise murdered the men who tried to tail her, and later mind controlled Hadji into her slave to bring Jessie to her for her food source. When her right-hand man protested about Elise trying to replace him with Hadji, Elise declared he was right and sucked the life from him as well. When her deadline of an eclipse was approaching, Elise abandoned all pretense of charm and subtlety and assumed her monstrous true form to kill everyone and drain Jessie's life.
 * Von Romme from "Nuclear Netherworld" is a Corrupt Corporate Executive extraordinaire who built his company over a uranium mine. Von Romme abuses his own minions; looks the other way when his uranium irradiates the water supply of the local Hopi population; and when a local farmer tries to expose him, Von Romme has him murdered and his death made to look like an accident. Von Romme's true evil comes to light when it's revealed he's selling the uranium to terrorists for them to make nuclear weapons with, as Von Romme stays ambivalent as to whomever gets nuked so long as his bank stays intact.
 * Dja'Lang Mukharno, from "Diamonds and Jade", is a puppeteer and brother of Kumar who exploits his people's old traditions for personal benefit. Coaxing his weak-willed brother into routinely selling off a rare gem to greedy buyers, Dja'Lang summons a shadow demon to brutally kill the buyers and anyone else in the premises to keep the money and the gem. Dja'Lang attempts to kill the Quest family and their friend Jade alongside the cops in the area when Jade sets Kumar up, and when Kumar loses the gem to the Quest family, Dja'Lang turns the shadow beast on him with full intent to murder him for his failure, laughing that he should have killed him years ago.
 * In Martin Mystery, a series filled with supernatural beings and monsters that have some semblance of redeeming traits, the ghostly Gatekeeper from season 2's “They Came from the Gateway” is wholly bereft of them. Keeper of the gateway to the underworld and longing to take over the human world, the Gatekeeper violently turns the head of the Center, MOM, into his slave and proxy while sending out monsters to kill her young agent. Hungering to “feast on the bones” of anyone who opposes him, the Gatekeeper's ultimate goal is to swarm the entire world with monsters from the underworld and rein in the bloody slaughter of mankind, even managing to unleash his monsters on several populated cities throughout the planet to wreak wanton havoc before he's ultimately stopped.
 * Ninjago:
 * March of the Oni (season 10): The Omega is the leader of a race of beings who live for destruction known as the Oni. The Omega desires to reverse creation itself and has plans to transform the 16 realms of Ninjago into lifeless worlds. Releasing his soldiers and powers upon Ninjago City, the Omega converts the citizens into lifeless statues, intending to expand this across the entire world. Facing off against Lord Garmadon, the Omega mocks his insecurities about his struggles with good and evil and psychologically messes with him for not being "Oni".
 * Season 15 (Seabound) : Prince Kalmaar is the cruel prince of Merlopia who wishes to wage war on the surface and conquer it with the evil snake deity, Wojira. To this end, he initially abuses his servants so as to find a way to awaken it with a special amulet. When the Ninja get involved in his plot he murders his father, King Trimaar, framing the Ninja for it and only keeping his adoptive brother, Benthomaar, alive out of pragmatism. When Kalmaar, now king, finally awakens Wojira, he takes control of it and uses its power to create a tsunami to flood Ninjago City, then has his soldiers attack to kill any survivors; when Bentho aids the Ninja in fighting him, Kalmaar attempts to kill him personally while taunting him about his adopted status and that their father should've left him to die when they met him.
 * Over the Garden Wall: The Beast is the appropriately named evil entity that dwells in the forests of The Unknown. He lures victims and sings to them, convincing them to let despair take them over and die, so that they could turn into Edelwood trees. The oil within the trees is their souls and he uses them to keep the flame of his lantern, which houses his own soul, lit to live. While it may seem he's attempting to survive, his actions make it clear it's out of a desire to live on to claim more victims. He fools the Woodsman into thinking he murdered his daughter and trapped her soul in the lantern so that he'd chop the trees and grind them for him while he moves on to find more victims. He takes interest in Greg and Wirt and stalks them throughout the mini-series. When Wirt falls into despair, Greg offers to take his place. The Beast makes Greg do pointless tasks that he says will help them get home when in fact they are meant to exhaust him so he'd freeze to death. At the end, he makes the same deal to Wirt as he did to the Woodsman, clearly lying because he knows Greg will die and Wirt will spend the rest of his life as the Beast's pawn. An unfeeling demon who views all around him as pawns and food, the Beast cements himself as the most vile creature in Cartoon Network's first mini-series.
 * The one-shot villain Professor Dick Hardly from The Powerpuff Girls, despite being human, is more of a monster than most villains of the show. Introduced as the sleazy college roommate of Professor Utonium, Dick quickly sees the potential of the Powerpuff Girls as a way to get rich quick. Getting the girls to supply him with Chemical X, Dick makes his own knock-offs of the girls and starts a business selling these copies as superheroes. Due to Dick's greed, however, these knock-offs have been created with minimum materials and Chemical X, meaning that, even though they are aware, they are mentally stunted and physically deformed. When the effort of superheroing causes the knock-offs to literally fall apart, Dick's happy because it means he gets to sell even more copies. At one point Dick notices one of his knock-offs is a perfect Buttercup copy, his response is to order the girl melted down for her "excessive" Chemical X. The episode's climax has Dick capturing the Powerpuff Girls and killing them slowly by draining them of their Chemical X while their father was watching. When Utonium offers to be a slave, making Chemical X for Dick for the rest of his life if Dick will let the girls live, Dick only laughs and says he'll kill the girls and keep Utonium as a slave. Greed incarnate, Dick was notable for being the only villain on the show to be played completely straight, with no humorous quirks to detract from his viciousness. He's one of the show's most evil and memorable villains despite only appearing once in the entire show. That may explain why he's the sole human character to die in the entire show.
 * The only recurring villain considered to be even close to pure evil is Him, who's actively described as the most evil being out there. That's right: in the context of the Powerpuff Girls universe, Dick Hardly is worse than the Devil.
 * Believe it or not, Scooby Doo has had these!:
 * The last-revealed villain of Zombie Island, . He seems like a Nice Guy at first, . But it's a lure to get people to trust him, so he can take them to Moonscar Island where he and his accomplices suck out their souls, turning them into zombies and gaining immortality. His initial appearance contrasted with the revelation of his evil deeds and his true nature makes him chillingly similar to a believable Serial Killer. What's especially jarring is the contrast between him and the other 2 antagonists of the piece; specifically, they are . But in his case,  It seems rather unfair, then, that.
 * Scooby Doo Mystery Incorporated has one in the form of
 * Sym-Bionic Titan:
 * General Modula is a cold, cruel man responsible for all the misery within the series. A treacherous man who once served proudly under the Galalunan Kingdom before being mistakenly thought dead by the King, Modula lets his cruelty consume him, allying with the monstrous Mutraddi and launching an invasion on Galaluna that leads to countless innocent people killed and the rest enslaved, with Modula murdering many of the rebels himself. Intent on utterly breaking the will of the Galalunan people by killing Princess Ilana, Modula sends the Mutraddi to wreak swaths of havoc and death on Earth to kill her, even using a living bomb called Tashy 497 to potentially decimate the entire planet to get at her. He also treats his own mooks as cannon fodder, and if they fail to meet his expectations, he kills them without even moving from his spot. A man who has long abandoned any honorable traits he may have had, Modula is a walking nightmare worse than even the literal monsters he rules over.
 * The unnamed Galalunan commander from "Escape from Galaluna" is a smug, ambitious traitor who uses his front as an obstructive, obnoxious military head to ensure the death of captive hostages while pinning their deaths on Lance and leaving him to hang. In truth having allied with Modula, the traitor sells out his entire planet to the Mutraddi forces to see the royal family killed and its populace decimated and enslaved, looking over the carnage and gloating that the only reason he sold his planet out was to lead Galaluna into an age of "conquest and strength" — and the prospect of a vast reward from Modula.
 * Teen Titans:
 * Slade Wilson, Arch Enemy to Robin and the Teen Titans, fits this trope well. A cold, manipulative criminal mastermind and the show's first truly evil villain, his main goal in the first two seasons was to find himself a young apprentice whom he could mold into being just as cruel and ruthless as he was. First targeting Robin, Slade came up with various schemes to test the Boy Wonder's mettle before finally infecting Robin's friends with nanobots that would destroy them from the inside out should Robin not follow Slade's every command, with Slade even promising that he would make Robin watch as he killed his friends. When his plans for Robin were thwarted, Slade next turned his attention to Terra. Taking advantage of her status as an outsider who would never be accepted because of her destructive powers, Slade manipulated her into joining and befriending the Titans, betraying them and finally trying to kill them, after which he had Terra and an army of his machines Take Over the City by force, with there being heavily implied casualties. After Terra finds herself in over her head while fighting the Titans and retreats, Slade physically abuses her for defying his orders. When Terra then tries to quit her apprenticeship, Slade reveals that the suit he gave her to enhance her powers also gave him complete control over her body and powers, and vowed that he would never let her go. Though Slade dies when Terra rebels against him, he is eventually resurrected by the demonic Omnicidal Maniac Trigon, to act as The Dragon. Ever The Sociopath, Slade took a vicious pleasure in his work towards the ensuring the apocalypse, torturing Raven and mind-raping her with visions of her destiny as The Antichrist who'd sell out all of humanity to Trigon, all in exchange for Trigon giving him back his flesh, blood and soul. Even when Slade rebels against Trigon and assists the Titans against him, it isn't out of altruism, but because Trigon refused to honor their bargain. What truly makes Slade so heinous is that he is the embodiment of a child predator, and he plays it completely straight.
 * Trigon the Terrible was the Satanic Big Bad of the fourth season and the father of Raven. In the past he'd conceived Raven solely to serve as a Human Sacrifice to become his portal into the realm of mortals so that he could destroy the Earth and all life on it, just as he did to Raven's homeworld of Azarath, and Raven has been repressing her powers and emotions in order to avoid letting this come to pass. After Slade died in Season 2, Trigon rescued him from Purgatory and offered him his life back were he to serve him in bringing Raven to her destiny. Trigon later came to Raven in a vision, emotionally abusing her and cruelly attempts to break her will so that she submits to his demands of her. When Slade asks for his promised payment, Trigon calls the deal off because, thanks to Trigon's own manipulation, Raven had come to him willingly rather than Slade delivering her to him and he attempts to incinerate Slade on the spot. Trigon then destroys the world immediately as he arrives, turning all mortal life to stone (don't worry, they get better!) and creating a Hell on Earth for him to rule. He then plots to expand this destruction to all worlds in the dimension so that he could conquer the universe and make all who still live worship him as their deity, and when the Titans fight back, he not only brings out their own dark sides to torment them for his amusement, but he tries to murder his daughter, whom he openly deems to be worthless to him. And he's the incarnation of all evil, so it's natural that he's as evil as it gets.
 * The Brain in the fifth season is the leader of the Brotherhood of Evil and the final Arc Villain of the series. Compensating for his lack of a body by being one of the most depraved foes the Teen Titans face, the Brain is introduced tormenting the Doom Patrol in specialized cages, threatening to slowly crush Elasti-Girl to death while torturing Patrol leader Mento with electricity. When his plan to use a quantum generator to wipe out entire cities is thwarted by the Titans, the Brain begins rounding up every young hero across the globe so as to permanently freeze them into trophies, with even powered toddlers not exempt from the Brain's reach. As shown in tie-in comics, the Brain also subjects the Titans to horrible Mind Rape via the villainous Phobia, and threatens the lives of 40,000 people inside a baseball stadium. Afer the Titans invade his lair to rescue his frozen prisoners, the Brain tries to detonate a bomb and "clear the board completely", willing to murder his dozens of Brotherhood allies while he escapes so long as it ensures the deaths of every last hero who could stop him.
 * Teen Titans Go! 's "Song of the Dead": "The Agent" is a demonic, deal-making entity from outside the mortal realm who seeks to ravage and conquer the world. Choosing the delinquent Johnny Rancid as a stooge, the Agent turns Johnny into a rock star so as to use his necromancy-laden music to unleash zombies throughout Jump City that nearly devour entire swathes of innocent people across the city. The Agent then hopes to broadcast Johnny's song across the country until the entire planet is overrun by raised undead who will kill and eat an innumerable number of victims and pave the way for the Agent to assume control of the broken and diminished humanity.
 * Thundercats 2011:
 * Mumm-Ra once commanded a number of races he kept enslaved using explosive collars that he placed around their necks. In his quest to rule the universe, Mumm-Ra, as we see in flashbacks, ordered the destruction of a star system in a highly-inhabited solar system, killing billions in the process simply so he could use the remains of the star to forge the Sword of Plun-Darr. Defeated and sealed inside a coffin, Mumm-Ra is freed by Grune and soon attacks Thundera with his army, killing Lion-O's father Claudus and enslaving most of the Thundercats. After taking over Thundera, Mumm-Ra proceeds to torture Jaga for information. In "Between Brothers," Mumm-Ra tries to trick Lion-O and Panthro into killing each other. In the two-part series finale, "What Lies Above," Mumm-Ra threatens to destroy the Thunderkits when they interfere with his plans, and then tries to collapse an entire city to kill his enemies. There was no line he'd not cross in his quest to become Dark Messiah of all races.
 * Grune was once a highly respected general of Thundera and a friend to King Claudus and Panthro who had ambitions to one day be king. When he learned neither he nor Panthro were promoted to General of the Army he was furious, despite being given a task to find the Book of Omens with Panthro. During their quest, Grune fell under the impression Claudus knew of his desire to rule Thundera and sent him on a pointless quest to get rid of him, turning his ambitions into bitter obsession. This led him to hearing Mumm-Ra call out to him, offering him power in exchange for his loyalty. When Panthro tried to talk him out of it, Grune attacked him and sent him plummeting to his supposed death. Returning to Thundera, seemingly with a group of lizard slaves, Grune later revealed his new allegiance and overthrew the kingdom with Mumm-Ra’s army, which resulted in the death of Claudus and having the citizens he once wanted to rule over either murdered or sold off as slaves. When reuniting with a vengeful Panthro, he shows no regret for any of the crimes he’s committed against his people, only that he's not the king yet. In his final appearance, Grune shows that even his loyalty to Mumm-Ra is a lie, as he convinced Slithe to leave Mumm-Ra trapped in the astral plane, leaving him in command of his army. His motto is “any sacrifice is worth the defeat of your enemy”, and it fits how easily Grune will stab anyone in the back to destroy his enemies and claim power..''
 * Would you believe Totally Spies had one? Helga Von Guggen is a greedy fashion designer who, to save money on materials, decides she'll start making "seamless" fur coats. How does she go about this? By kidnapping innocent people, injecting them with a serum that turns them into Petting Zoo People, then skinning them alive in what appears to be a giant industrial crusher. She later designs a line of apparel that crushes people who wear them, with heavy implications that it manages to kill an innocent shopper off-screen in the opening minutes of the very episode it was introduced. Is it any wonder that she became one of the show's main villains? Seriously, how's this for an Establishing Character Moment?


 * "Ok K.O. Let's Be Heroes"
 * Shadowy Figure In "T.K.O.", after hearing K.O.'s frustration and desire for power while he throws out the remains of a Darrell, Shadowy Figure appears and tells K.O. that he senses great power flowing through him and offers to help unlock it. While initially willing to go with him, K.O. then stops, stating that he doesn't even know who he is. With that, Shadowy Figure shows him his POW Card, which states that he is a Level 8 hero, convincing K.O. to follow him.In the woods, Shadowy Figure tells K.O. that the secret to his hidden power is his anger, specifically the anger locked deep inside of him, and that he must unleash it in order to become powerful. While inside of K.O.'s mind, Shadowy Figure shows him his anger and reminds him of all the things that his friends had said to him (somewhat warping the meaning of them), causing his anger to grow, although K.O. fails to unleash it. While Shadowy Figure attempts to try another method, K.O. grows even more angry at how everything he's tried to increase his power has failed him, causing him to grow even more angry to the point where he unleashes his anger and gives Shadowy Figure what he wanted; K.O. to turn into the villainous T.K.O.. Shadowy Figure, delighted with this outcome, unleashes T.K.O. on Lakewood Plaza Turbo.

After T.K.O. is defeated and imprisoned by K.O., K.O. tells his mother Carol what happened and pulls out Shadowy Figure's POW card. As Carol is holding the card, it glitches out and reveals that Shadowy Figure's hero level is actually -8, meaning that he is a villain. As everyone is reconciling, Shadowy Figure is seen standing on the roof of iFrame Outlet, laughing to himself and saying "Soon". Brandon notices Shadowy Figure and tries to tell A Real Magic Skeleton about the man standing on their roof, but he ignores him, resulting in Brandon deciding not to tell anyone, especially considering that he already left.In "Let's Have a Stakeout", Mr. Gar alerts K.O., Radicles and Enid to a "Plaza Creeper" who sneaks into the Plaza at night. Upon watching security footage of the man, K.O immediately recognizes the Creeper as Shadowy Figure and recounts how he manipulated him into becoming T.K.O. and nearly destroying the Plaza. K.O. then states that they need to go after Shadowy Figure immediately, only for Gar to tell him that they need to wait, also telling Enid and Rad to stay on guard while he goes on a stakeout, to which K.O. ends up tagging along.

While on the stakeout, K.O. spots Shadowy Figure entering the sewers and decides to disobey Gar's orders and go after him. Chasing after the villain through the sewers, K.O. discovers a door and breaks it down, believing it to be where Shadowy Figure is hiding, only to find a hidden temple filled with glowing orbs. Shadowy Figure then enters the temple and congratulates K.O. for breaking into the temple for him and therefor allowing him to harvest the glowing orbs (or "glorbs"), which contain power beyond his comprehension. K.O. attempts to fight Shadowy Figure and prevent him from stealing the glorbs, however, Shadowy Figure outmatches him at every turn, eventually grabbing him and putting him in an armlock. With K.O. in his grasp, Shadowy Figure starts insulting and taunting him for being weak, disobeying Mr. Gar and allowing him to steal the glorbs and watches in joy as he blows him back and starts powering up into T.K.O., only to be confused and disappointed when K.O. refuses to give into his anger. Enraged, Shadowy Figure charges at him at full speed and attempts to strike him, only to trip on K.O.'s head, drop the glorbs and fall off the edge. While falling, Shadowy Figure compliments K.O. and remarks "my work here is done" before swimming away upon hitting the water.

In "Mystery Science Fair 201X", Shadowy Figure's POW Card is briefly seen, as Dendy points out that it is the rarest villain card K.O. owns. When she furthers asks about Shadowy Figure, K.O. states that he is likely gone for good.In "TKO's House", while K.O. is at work, T.K.O. forcibly takes control of K.O.'s body when he sees someone who looks like Shadowy Figure and tries to strike said person down, however, this turns out to be Pird in a black cloak. Because of this, K.O. decides to talk to T.K.O., who reveals that he wants to hunt down Shadowy Figure and force him to reveal why he created him. Digging through his memories, K.O. remembers that Shadowy likes Glorbs, however, he refuses to break into the temple to get them. T.K.O. offers to break into the temple instead, and, after a brief fight, K.O. and T.K.O. decide to share their body to hunt Shadowy down. Later on, Shadowy Figure enters the temple after T.K.O. breaks into it. K.O. and T.K.O. try to confront Shadowy, however, with them both trying to control K.O.'s body at the same time, they are completely unable to function properly; Shadowy Figure even remarking that he thought K.O. had improved during his fight with Boxman Jr., but now he is a mess.He then starts gleefully collecting the temple's glorbs, although he finds himself confronted by both K.O. and T.K.O., who have synchronized their movements to achieve a new form called Perfect K.O.. Still, they find themselves unable to touch Shadowy, who tosses them out of the way and continues stealing the glorbs. K.O. and T.K.O. take advantage of this and (quite literally) get the drop on Shadowy, pinning him to the ground. Upon being asked, Shadowy explains that he didn't create T.K.O., as he is a manifestation of K.O.'s negative emotions has therefore has always been a part of him, and that he brought T.K.O. out because he needed someone to break down the temple door so he could steal the glorbs, which are "very popular on the villain market". K.O. accepts this answer, but T.K.O. doesn't buy it, further asking, if all Shadowy wanted was the glorbs, why he knows so much about him and was always satisfied when they fought. Shadowy doesn't answer, and T.K.O.'s synchronization fades for a moment, making P.K.O.'s body fall unconscious. During this time, Shadowy takes the opportunity to escape.In "K.O. vs. Fink", after being bullied by Fink for being a "momma's boy", Shadowy Figure, pretending to be his inner monologue, approaches K.O. and tries to convince him that the only way to beat a bully is to get angry and defeat them, thus trying to goad him into unleashing T.K.O.. However, upon learning that T.K.O. is "grounded", Shadowy tells K.O. that he can win by bringing glorbs to the sewers and then leaves. He later reappears during K.O.'s rematch with Fink, advising him again to get as angry as possible and bring glorbs to the sewers after he's done. Ultimately, K.O. decides to talk with his friends about how Fink had been treating him instead, foiling Shadowy's plan.

In "Let's Get Shadowy", in order to spend father-son time doing something they both love, Professor Venomous suggests to K.O. that they destroy a villain he was unable to beat, with K.O. saying the only villain he was ever unable to overcome was Shadowy Figure, whom Venomous has never heard of. Venomous attempts to research Shadowy online, only for his computer to crash, before having K.O. take them to the Lakewood Tree where Shadowy normally tries to break in, with a confused K.O. noting that he normally enters as soon as the door is open. Thinking that he may have found a new supply of glorbs, Venomous, K.O. and a reluctant Fink visit Billiam Milliam and then Foxtail to see if they have done business with him, with the latter admitting that she used to get her glorbs from him and handing over the coordinates to his lair. Upon arriving, K.O. and Venomous fail to find Shadowy or anything leading to him, resulting in an argument between the former and Fink, where she decides to show them why she had been so resistant to come.

After exiting the lair through the top entrance, Venomous finds that it is situated on top of his old lair, causing Fink to reveal that he is actually Shadowy Figure. With this knowledge, Venomous realizes that Shadowy Figure was the result of his experiments to try and regain his old powers, with Fink further stating that Shadowy never wanted him to know about his existence (explaining why he would often become incredibly tired and why his computer crashed before), and that she kept it a secret from him because Shadowy threatened to permanently take over his body. Overwhelmed by the feeling of helplessness, Venomous transforms into Shadowy, who attacks them both for revealing his existence to Venomous. However, K.O. and Fink manage to defeat Shadowy and revert him back to Venomous, who, deciding that he can't live with two personalities, promises to get rid of Shadowy for good.

In "Carl", K.O. shows a new feeling of trust in Professor Venomous for promising to rid himself of Shadowy Figure, who appears equally relieved that his alter-ego is gone for good. Venomous later shows K.O. a friendly goo creature he created named Carl, who ends up turning into a giant monster that K.O. is forced to stop alongside his friends, while Venomous ultimately does little to help and in the process attempts to goad K.O. into unleashing T.K.O..

After confronting an uncaring Venomous about his actions, and how they resemble what Shadowy Figure would normally do, K.O. is left feeling powerless and is thus overtaken by T.K.O., who locks him away in his subconscious and rushes off to confront Venomous. However, Venomous reveals that he and Shadowy Figure have reached a "beautiful compromise" to become Shadowy Venomous together, telling T.K.O. that they aren't so different now. Rather than fight with him, he offers an alliance with T.K.O. instead so they can make a world where they're in charge, which he quickly accepts, much to Lord Boxman's discomfort.