Complete Monster/Web Original

"God, I just really want to savor this. You know, once the feds and rebels kill each other, I don't know what I'm gonna do. I mean, we've been playing these guys for years. How do you just walk away from something like that?"
—Felix, Red vs. Blue

Who knew stick figures could be so brutal.

Whether you're making whimsical fan videos or your own dramatic series, out on the new media wave, there's no limits on how bad you can make a character.

See also:

Bionicle

Creepypasta (Fanfics, SCP Foundation, Related Media)

Mortal Kombat

RWBY

Survival of the Fittest:

Cody Jenson starts out as simply a perverted, arrogant asshole. Then he gets hit with a tire iron, and his mind breaks down. Then he brutally rapes Madelaine Shirohara, kills her, and accidentally shoots Adam's girlfriend. And those are just his first two kills. Adam Dodd gets his revenge and Cody gets his comeuppance at the end of Version 1, when he kills Cody with a katana and carves the word "Rapist" into his stomach. Walter Smith from version two was an example of a badly written Complete Monster, as he came off as pointlessly evil for no real reason; part of this was due to a character whose plotline he was supposed to be a part of not making it into the game, but he was still written poorly and inactively, contributing to his status as an Anticlimax Boss fairly early into the game.

Some like to put Danya in this category, what with the whole "kidnapping high school students and forcing them to do horrible things to each other because he hates the US for some reason" thing. And if that weren't enough, he makes snide and sadistic remarks about the students involved, with one snippet of his dialogue making fun of how Adam was raped and left for dead by Angelina Kaige. This is made all the worse by his status as a Karma Houdini.

Let's see, committing horrendous acts? Check. Played completely seriously? Check. No justification for his actions? Check. Showing no remorse, and enjoying it? Check. No chance of redemption? That's Maxwell Lombardi in a nutshell, folks.

There is absolutely nothing sympathetic about Ashlie Jackson of the Mini site spinoff Evolution, who started out as a Bitch in Sheep's Clothing before getting abducted and assigned a power, and, from the minute she arrived on the island, she had absolutely no problems with killing. One of the best examples is how, when blood appears on her clothes, indicating that she had just killed a person with Invisibility without realizing it, her first thought was that it was that easy, and the second was to worry about the blood on her clothes.

Fear, Loathing and Gumbo on the Campaign Trail '72: The world in general in this Alternate History story has become a major Crapsack World, but some dictators outshine all others in heinousness.

Mao Yang-jin is Mao Zedong's successor as dictator of the Chinese People's Republic. He manages to be even worse than his predecessor, turning all of China into a horrifying hybrid of post-Cold War North Korea and Khmer Rouge-era Cambodia, with totalitarianism ramped up to eleven and the country turned into a giant death camp and killing field. When the military rebels against him for his regime's excesses, he destroys the rebel-controlled city of Kwangsi with a nuclear missile. Later, he creates a virulent strain of influenza that kills the better part of a million people worldwide, none more so than in China itself, creating the worst health year since the Spanish Flu.

General Magnus Malan of South Africa makes the Apartheid system even worse until it is effectively a Neo-Nazi state except in name, nominally supported by the United States for its anti-Communist hysteria. His regime is actively waging a losing war in the rest of Southern Africa, committing constant massacres against African natives and using chemical weapons and dirty bombs against their enemies. When their fascist state eventually collapses, he arranges to wipe out most of the continent with South Africa's nuclear arsenal.

President Donald Rumsfeld is a dictator who doesn't care about his own people's wellbeing. Since taking office, Rumsfeld has destroyed all forms of "welfare" and any regulations on business, causing the poor immense suffering and the workers extreme hardship (and borderline enslavement), along with wanton destruction of the environment. He imprisons or murders critics of his regime on a regular basis, used massive voter fraud and other illegal actions to win the 1984 election, and directly supports the regime of the aforementioned Magnus Malan, along with other right-wing regimes like Israel and Chile, with military and economic assistance. Rumsfeld supports terrorism in Northern Ireland simply because the UK voted for a Labor government. Rumsfeld later crossed the Moral Event Horizon when "Liberty Legion" officers were ordered to kill soldiers wounded on the battlefield in order to save the costs of caring for them. He's also trying to weaponize AIDS and exploited the aforementioned flu outbreak to spread anti-Chinese racism and get more votes in the election. Finally, he also invaded Cuba in order to distract Americans from their domestic problems, rather than to remove a dictator or help the Cuban people.

Douglas Coe, known among his followers as "The Great Teacher", is a fundamentalist preacher who seeks to spread his particular brand of Evangelical Christianity across the United States by any means necessary. Coe first works closely with President Rumsfeld, helping the President turn the country into a kleptocracy and remove political dissident. When Coe feels that Rumsfeld is no longer politically useful to him, Coe arranges for the latter's impeachment and arrest. When Congress refuses to cooperate with him, Coe launches a coup that leads to the destruction of the Capitol and numerous deaths of Washington's political leadership. Under his rule, Coe turns the US into the "Christian States of America", where dissent is outlawed, and non-Evangelical Christians and "degenerates" such as homosexuals or drug addicts are designated for death. In his campaign to bring the rest of the country to its knees, Coe has at least a dozen American cities destroyed with nuclear weapons. In order to stop a Cuban invasion of Florida, Coe uses several more nuclear weapons, indifferent to the millions of innocent people killed due to his actions. When the nuclear stockpiles begin to run low, Coe authorizes the use of chemical and biological weapons in his war against the resisting American populace. Believing himself to be the messenger of God, Douglas Coe created one of the most oppressive and violent regimes in American history.

In Book III of Tasakeru, an exiled wolf named Ares is introduced as being one of these: a completely unrepentant rapist. He gets worse. The title of Book III is Soulsnatcher, to give you an idea of how much worse. He quickly adds mass-murder and screwing with the process of life and death to his repertoire.

Camilla The Series: Baron Vordenberg from Season 2 is an elderly Austrian baron who is a member of the Silas Board of Directors. When he is first introduced, he seems to be a kind and friendly man, despite his apparent disdain for vampires. Once Laura gets him voted as the Chairman of the Board, he immediately shows his true colors by ordering a detainment of all vampires and anything supernatural in Silas University. He has some of the students, including Laura's friend Danny (whom he lies that he will stop after arresting Carmilla and Mattie), recruited into his militia, and preaches anti-vampire propaganda. It is discovered that, despite the potential consequences, he intends to kill Lophiiformes, all to make a name for himself. After killing Lophiiformes, he intends to execute Carmilla and Mattie, along with any students protecting vampires; the attempted arrest indirectly leads to Mattie's death. After almost callously shooting one of his men, Laura starts a resistance against him. In the battle, he has Theo betray them and kill Danny. The next day, he has the other board members shot over the announcements and prepares to execute Carmilla in front of Laura's webcam, taunting them all the while.

Harmony & Horror: Martin Greywhinder was the co-founder of M&H Harmony Toys alongside his brother. Even before his truly horrible crimes, he was reported to not be the best father and had several allegations of Domestic Abuse and child abuse. He eventually became obsessed with creating the "perfect toy"; to this end he made a Deal with the Devil, to make his toys lifelike, but in order to do so, he had to kill, a deal that would result in the deaths of several children. Martin would begin his quest by killing his entire family. He would eventually switch to murdering random kids using his multiple costumes to lure them, kidnap them, and finally murder them. After all of these killings, he would use Satanic rituals to bind their souls to toys where they would still be conscious but unable to die.

Imperium Nova doesn't have many of these, but Patrice Rey Barte of Gemini managed to earn the title by orchestrating an orbital bombardment of the planet Dnoces 13 that can killed over a billion people because he was bored.

Marrissa from Adam Cadre's Dark Marrissa. Among other things, she beams down half of a baby to punish its parents for suggesting that she take a moment to reconsider committing genocide on a planet for launching a scientific probe at the ship.

Alexia from The Return who uses Mind Rape as a recruitment tool, turning unwilling humans into her compliant, loving daughter Succubi, and then gleefully abuses, discards, and uses them as Cannon Fodder; after all, it doesn't matter if they die - she can always make more. Of the villains so far, she might not have been the biggest, but certainly the scariest due to her ability and willingness to strike at our heroes' sense of identity and security. She also caused the most pain and suffering and was considered appalling even by the standards of other demons.

SMG4:

From the popular Australian web series we have Filthy Francis in the "Anime Arc". He initially starts off as a ruthless crime lord who harshly punishes Mario after losing all his illegal anime supplies, but later does help the heroes unban anime. During the second half of the arc, however, he loses all his redeeming qualities and mitigating factors. After stealing the inkweaver pen and kidnapping all of Inkopolis to harvest their ink so he can create an island of waifus, which is shown to cause them extreme pain, and he does not care if they are all killed while this happens. But Francis really shows how horrible he can be when he sadistically kills Desti so he can demonstrate what happens when people cross him and laughs about it. Unlike Waluigi and Bob, Francis does not get redemption in the end, but instead is killed by Saiko when she puts him in one of his own ink extractors and leaves him on the exploding island. Francis is by far the worst villain in the entire SMG4 universe who, unlike most other villains, is taken completely seriously and has no redeeming qualities.

Sunset Paradise: Sir Benedict Cumbersnatch is the leader of the Port Aurora Crime Syndicate. Once a powerful crime boss, Benedict attempted to steal the Phoenix Egg to use its ashes to become immortal and make a criminal empire that will last forever, uncaring that this will cause death and ruin to come to Port Aurora. Benedict is stopped and sealed inside an egg shaped body by Sheriff Aloysius Bori, but only after mortally wounding the latter. Returning 100 years later, Benedict forms a crime syndicate to help him with his plans, while also ordering the Spud Buds to kill Aloysius' grandson, Auri Bori, just to spite his deceased Arch Enemy. When Meggy and Auri interfere with his plans, Benedict has the Funky Fource frame them for attempting to assassinate Mayora Bora, before attempting to kill the duo with a bomb. Upon taking over Port Aurora's lighthouse, causing pain to several children in the process, Benedict has his minions rampage throughout the island, uncaring if anyone gets killed in the process. When confronted by Meggy and Auri, Benedict manages to kill Auri by attempting to shoot Meggy with a laser, forcing Auri to sacrifice himself to save her, before proceeding to gloat about it and attempts to use the Phoenix Egg to restore himself to his original form and resurrect his criminal empire.

The Whateley Universe:

Emil Hammond, a modern-day Josef Mengele who likes to perform horrific experiments on kidnapped mutant children—and believes himself justified because, to him, they're not even human.

Deathlist, a psychopathic, Nigh Invulnerable cyborg who gets off on widespread carnage and considers the world to owe him a debt of pain. The most horrific thing he's done so far was to kidnap a mutant superheroine, jam a power-neutralizing device into her skull, then hack off her arms and legs and give her to his troops as a sex toy. Then, when she died after more than a month of torture and rape, he impaled her corpse on a pole with a message to one of her former team-mates carved into her chest. Not even his Freudian Excuse (namely, that his parents tried to kill him by crushing him in a garbage compactor) nets him any sympathy after that. The really horrifying part: that message to a former teammate? It was a thank you note, for allowing him to do that. Moral Event Horizon for said "hero" right there.

Hekate, a wizardess supervillain-in-training, whose rap sheet includes using a spell to enslave two of her classmates for a year, during which they were repeatedly raped and otherwise abused while being completely aware of what was happening but powerless to stop it, as well as the fact that the athamé she used in the spell was empowered by the ritual sacrifice of two young children. Not only that, but during a magical battle with Fey (after trying and failing to ensnare her in the same enslavement spell mentioned earlier), she summons a trio of iron elementals using the promise of dozens of future sacrifices. To top all that off, she used her athamé to stab Jade in the heart beforehand, just to torment Fey.

Four: Overclock, who plans to trap super-regenerator in a holographic sim, drive her insane, cause her to accidentally kill someone and maybe blow up her friends too, all so she'll end up in the prison known as ARC Red Complex until she dies...which, since she's a super-regenerator, might be forever. Why? She ate up all of his favorite cereal one morning, before he got any.

Twp'atwt from Protectors of the Plot Continuum. Easily the most sociopathic Guard, he was also the one who began murdering the prisoners when the DIS was defeated, and he loved to make people hurt. Word of God is that his name was an acronym for "The Wrong Place At The Wrong Time", which was certainly his modus operandi. His maiming and later Karmic Death at the hands of Blue Photon are two of several CMOAs in the series.

Many of the DIS in general were portrayed as Complete Monsters, particularly the Bracket Fungus' Dragon, Nendil Morifëa, an old follower of the Sons of Fëanor whose name was even Elvish for "Black soul". The Bracket Fungus himself would count, if not for the fact he doesn't directly act often enough to qualify; the only time he's shown taking things into his own hands is during one of the final battles in the Crashing Down story.

Alastor from The Anti-Cliché and Mary-Sue Elimination Society can be counted as one. So, he's a self-insert who was forgotten about a long time ago. Okay, sympathetic, understandable. What pushes him into the Complete Monster territory is his idea to combine all of the Universes together, absorbing all the inhabitants (i.e. EVERYONE), and using them all to kill his Author, only to revive him and kill him again and again and again, mind fucking him in the process.

Sola Soulhawk from The Insane Quest: single, red-haired young woman seeking man (or woman) for companionship. Enjoys long walks on the beach, salsa, genocide, destroying worlds, murdering your closest friends, laughing at how weak you are, and Cold-Blooded Torture. Call now!

Look to the West: General Lascelles seems to have formed the Bavarian Germanic Republic just so he can genocide the population for being inferior to the Latin race (according to Evil-Steampunk-Revolutionary-France's ethnic hierarchy). Eventually, and ironically, he is killed by the leaders of La Résistance. Why is this ironic? Because both the resistance leaders are descended from real-world ancestors of Adolf Hitler. Also, they may or may not have eaten him.

"The Monster", the aptly named Serial Killer from Plagam Extremam Infligere.

Thankfully, the Global Guardians PBEM Universe only has a few of these...things.

The Blood Red King (the Anthropomorphic Personification of Terror), who, on a lark, once invaded the maternity ward of a Belgian hospital and suffocated all the babies whose name began with an "odd-numbered" letter (A = 1, C = 3, and so on). He once forced a crusading televangelist to rape, strangle, and dismember his own teenage daughter during a live television broadcast because he didn't like the man's hair. And the less said about what he did when he took over the Figlie della carità di San Vincenzo de' Paoli, a convent in Rome, the better.

Tom Foolery. When he was first introduced, the players took him to be the usual gadget-wielding psychotic clown. But then they discover his "Peanut Gallery" (inhabited by the badly embalmed corpses of over a dozen children he'd abducted), a built-in "audience" for whom he was performing his "tricks".

Swarm is a mutant driven insane by the very thought of her powers (she can turn into a horde of cockroaches). She's lost any humanity that was in her back when she was "normal" and now is little more than a cannibal Serial Killer.

Neopets has a surprising amount:

* Razul: An emperor who had a lust for immortality so great, he cast a curse upon his own city - and his own son - to become a fiery demon, and when he returned, he attempted to murder his son and his daughter-in-law.
* Dr. Sloth: He attempted to wipe out the entire Neopets staff. He even had Shankly served to The Beader and Number Six for dinner. And d also mutated an entire race of innocent aliens into savage warriors.
* Alexander Krawley: The mysterious villain of the Tale of Woe, Krawley tricked a town into taking a potion that would turn them into monsters and apparently caused the death and abandonment of The Meepit Oaks Sanitorium, all for kicks.
* Captain Scarblade: Most pirates in Neopia are pirates who don't do anything. Scarblade averts that; he's as vicious and cruel as Real Life pirates and attempted to destroy Maraqua simply because it didn't stay destroyed. He, too, is a Draco in Leather Pants.
* The Darkest Faerie: The Mistress of Nightmares, the Darkest Faerie attempted to drop Faerieland into Neopia well before Xandra did. Not only that, but she may have been un-petrified with the rest of the faeries… Furthermore, she even attempted to rewrite the history of Altador and the entire Neopia to make herself their "founder"!

Red vs. Blue has these repugnant assholes:

* The CEO of Charon Industries, Malcom Hargrove, AKA the Chairman, is one of the biggest villains in the series, and among its most evil. Even before his villain reveal, his investigation on the Director of Project Freelancer goes too far when he releases Agent Washington, who had no hesitation to kill the Reds and Blues at that point, and the Meta, a known criminal who killed Freelancers for their equipment and A.I.s, from prison to hunt down Epsilon, who was currently in possession of the Blue Team. He finds alien artifacts on a planet known as Chorus, so in order to collect them, he hires a group of Space Pirates to kill everyone on the planet by manipulating them into a Civil War. He sends ships containing cargo for the mercenaries to use to the planet, where the mercs kill everyone on the ship and steal the cargo for their own use. When the mission is in jeopardy, he threatens to kill his two lead mercs Locus and the below character by sending a new agent to finish the job. When he is exposed, he decides to kill everyone.

Felix, one of the Co-Dragons to the aforementioned character, is just as bad. When he fought in the Great War, he never showed any mercy to his enemies, even those that were trying to surrender. When one of his teammates, Locus, was broken by the war, Felix kept him from getting help and dragged him along because he knew that he couldn't survive without his partner, despite hating him. When he was hired by his boss to create a Civil War on the planet Chorus, the mercenary took his job too far by infiltrating one the sides because he thought it would be fun for them to trust him while not knowing that he was leading them to their deaths while mocking them for trusting him. He also leads the raid on prison ship where the entire crew is killed and the prisoners who are not worthy to join forces with him ejected from the ship. When word comes out about the Purge, He is unable to resist being the one to personally kill off everyone, showing that he doesn't care about the orders and more about just killing for the hell of it, going as far as to sacrifice his own men just to kill everyone else. When the Purge temple is destroyed, Felix goes after the Reds and Blues just so he can kill them.

* Sigma, representing the Alpha's ambition and creativity, is the evilest AI in the Meta. Interested in becoming human, Sigma gradually took over the mind of Agent Maine and increased his violence. He also manipulated Agent Carolina into getting two AI, leading to a mental breakdown, and helped torture the Alpha. Using Maine, Sigma stole Carolina's AI before nearly killing her. As part of the Meta, Sigma hunted down other Freelancers for their equipment and AI. The AI would be forcibly implanted into the Meta, whether they were willing or not. He also slaughtered multiple simulation teams as well as any recovery agents encountered. In a final bid to steal the Alpha, Sigma and the Meta attacked Freelancer Command, killing everyone stationed there and cornering and almost killing Agent Washington. Even with his destruction Sigma's manipulation ensured that the broken Maine would continue to act as the Meta.
* Genkins was part of a false pantheon of gods, the "Cosmic Powers", meant to trick other species into subservience. Desiring true godhood, he joined forces with Chrovos to remake the universe In Their Own Image. He proceeded to help manipulate the Reds and Blues into causing a Time Crash, going as far as to exploit Wash's PTSD he gained from his neck injury and generating a mini black hole to sadistically murder Huggins when she tried to interfere. After the time crash, Genkins traveled around the time stream to cause further paradoxes to further weaken Chrovos's prison. Eventually, Genkins stole Chrovos's power to devour them alive, before trapping the Reds and Blues in the Labyrinth so they could be psychologically tortured to the point of committing suicide. A smug bastard who is willing to tear the universe apart and stab everyone in the back for power and sadistic pleasure.
* Zero, the leader of Viper, desired revenge against the Alliance of Defense for dropping the project GLASS and taking away his chance to be the leader of Shatter Squad. Desiring the Ultimate Power, Zero attacked several bases in order to steal artifacts and coordinates for temples, viciously slaughtering those who got in his way, having Washington tortured, and only sparing those who he wanted to trounce again in the future. Finally achieving his goal, Zero declared his intention to "burn the world down" and "destroy everything", all to show off his own strength out of petty spite.

Russian dictator Gridenkov from the Chaos Timeline and many of his followers. At the end, when the Germans start to nuke his country, he goes completely off his rocker and sacrifices prisoners to Chernobog. At least, that's what some people say.

In Eclipse, Freiherr Eighinn Stossuhl is a brutish, Trigger Happy thug who firmly believes that Might Makes Right. In his first appearance, he threatens to attack a neutrally-aligned country (Cessair) if they failed to turn in the main character. When the main character actually leaves peacefully, Stossuhl attacks Cessair anyway, in a war that cost the lives of 86,492 people and eradicated Cessair's entire infrastructure. When he gets hit by a sniper, Stossuhl responds by destroying an entire building; he admitted that the sniper probably wasn't there anyway. He incinerates an entire platoon of his own soldiers when they took too much time to get through a maze. When an injured soldier grabbed his ankle, Stossuhl destroyed his entire upper torso because he was stopped from sprinting. When another soldier offers to patch him up after a fight, Stossuhl pushed his skull into his torso because "Real men never disarm themselves." When an informant reveals that all of his targets had escaped, Stossuhl immediately chokes the informant to death, while still demanding to know where they went. He proceeds to order the eradication of Cessair, and when his colleagues called him out on it, Stossuhl continues the shelling out of spite. At a public speech, Stossuhl attempted to divert his culpability in the invasion by claiming his colleagues supported it (when they didn't). Finally, Stossuhl publicly executed close to a hundred Cessair prisoners (and his own bodyguards) by unleashing a stream of magma that morphed them into a mesh of dry, organic rock.

This is what Lenore the Cute Little Dead Girl would've become if she had not died. In a comic, she said she wanted to take over the world; she also seems to take delight in peoples' unfortunate lives. It is also hinted that she fakes idiocy to torment Ragamuffin. She also often brutally murders Mr. Gosh [1], even though she has good reason to do this to him. And given what she did to an ugly woman in A Walk in the City, this just comes out as pure villainy. But, due to her being the titular character of the series, she most likely avoids falling into this trope.

The Wolf Creek franchise has Michael "Mick" Taylor, an Australian serial killer, rapist and torturer who preys upon tourists visiting the Wolf Creek area, falsely befriending them before taking them back to his home and slowly torturing them to death. He has killed several dozen people including a little girl. One of his favorite methods is the "head on a stick", where he severs their spine to turn them into a human vegetable. At the end of the second film, he frames one of his victims for his crimes, leading to the ruination of the victim's life. In the prequel novels Origin and Desolation Game, he killed his mother who loved him dearly and killed a dog so he could force-feed it to its owner before killing him too. While being pursued by four other serial killers, Mick tied up his girlfriend Rose and used her as rape bait to lure the killers into a trap, and killed one named Jerry by gutting him and force-feeding him his own intestines. During the Vietnam War, he committed more atrocities, and continued raping, torturing and killing when he returned home. In the TV miniseries, he murders Eve Thorogood's family, and spends the rest of the series trying to kill her. He captures her Love Interest and tortures him before making her stab and kill her love interest herself. In the second season, he murders a man who had been his friend for decades to eliminate someone who could connect him to his crimes, and targets a large tour group because the guide said Mick wouldn't make a good tour guide due to how politically incorrect he was.
William Shaw in Paperwalls. Just read the story.

Venomstripe from Warrior Cats RPG is one of these, a sadistic cannibal who kills high positions for the hell of it and is quite possibly the poster child for Even Evil Has Standards - BloodClan, one of the evilest groups in the game, and SunClan, a vicious anti-Clan group, are the major cats after her.

In the original web novel version of The Rising of the Shield Hero, the King of Faubley is a grotesque pig of a man who abuses his position to gain new "playthings". Threatening other countries to send him women, the King is a Serial Rapist who takes brides to rape and torture them to death, a fate so horrible that many prospective brides opt for suicide if possible. Upon receiving them, he proceeds to "play" with them and have them healed to continue the fun, having 9,999 brides that he has raped and murdered. When even the evil Malty is sent to him, the hero Naofumi cannot even watch the horrific recording of what the king does to her, despite his hatred of Malty.

From Arby 'n' the Chief, we have Psychopathic Manchild Adam. He's a rare example in the series in that he doesn't get played for laughs or just commit console atrocities. Scott was smoking too much pot to do anything truly malicious, Sky was an idiot, Trent at least tried to be polite to Arbiter most of the time, and most of Chaos Theosis range from Affably Evil (Duncan) to Faux Affably Evil (everyone else). Adam is frequently abusive to his mother, won't even ditch his console to see his dying grandmother, frags Claire, and generally seems to enjoy fragging (and perma-banning) players for no good reason. He's the Token Evil Teammate for an already morally ambiguous group, and they are disgusted to keep him on their group.

* He treats his "friends" like crap too. He threatens to ban one of them and jokes about another one's dead mother.

Though it isn't part of Arby 'n' the Chief canon, Arby 'n' the Chief in L.A. had Mario of all people turned into this. He leads three other toys and treats them all awfully. He breaks Sonic's leg for playing Halo 3 and constantly spites his brother. He also later forces Arbiter to choose between having a place to stay or staying with Master Chief. After that, he locks Sonic in a cupboard and forces Toad to capture Arbiter and do the same. Finally, he tries to kill both Sonic and Arbiter by burning them alive.

Red Dawn Plus 20 has many monsters, by virtue of being Dirty Communists…

The biggest and baddest of them all is the GRU's General Sergei Khvostov, aka "The Butcher of Clear Lake City". His offenses include...

* He arrived at Johnson Space Center in Houston and found that NASA had managed to move everything (personnel, equipment, documentation) out of there before the invaders arrived, leaving only a mocking note that said "Catch us if you can!". His response was to order the massacre of the families of NASA contractors, astronauts and anyone else left behind in Clear Lake City.
* Bathing a Cuban officer (one of his nation's allies) in battery acid when they got into an argument over a mistress.
* Massacring the town of Freer, Texas in response to an assassination attempt (that's implied to have actually been carried out by other elements of the KGB who found his methods counterproductive).
* Forcing the mayor of San Antonio to kill one of his staff, threatening to rape her and then kill her himself anyway if he didn't. (He complied).

General Gennady Bratchenko, the brother of the original film's Big Bad, dropped VX nerve gas and/or White Phosphorous ("Willy Pete") on Louisiana towns merely suspected of aiding La Résistance.

DNA testing in-story reveals that, between 1965 and 1988, 4,000 "cold" rape cases turned out to have been committed by fourteen different PAC members.

The Questport Chronicles has the Master of Darkness, an insane wizard who aspires to plunge the entire world into darkness.

Iron Rose, the sadistic dolphin from Cold Blood. Usually, when you see a dolphin as the villain, it's Played for Laughs or as a parody. Iron Rose, though, is played straight, as unfunny and unsympathetically as possible. He murders innocent sea creatures such as porpoises for humor, captures the human girl Natalie and plans to rape her and then drown her when he's done. As soon as the protagonist, Kevin, and his bird foster parents, Ebony and Phil, come in, he breaks Ebony's wing in front of Kevin and laughs as she moans in pain. Then he tries to kill Kevin in front of Ebony and almost succeeds. At first, it looks like he has a Freudian Excuse when, at the end, he's beached and he claims that he was abused as a calf. Kevin instantly feels sorry for him and gets him back into the water. However, as soon as he's done that, Iron Rose reveals that that was all a lie, that he's been killing things for years, and that he's even murdered his own mother. And then tries to kill Kevin after the latter saved his life! Is your Flipper filled childhood ruined yet?

Sweet Tooth from Holy Musical B@man. He gleefully murders people using various sorts of deadly candy (no, seriously, candy.), but doesn't become a Complete Monster until he reveals his final plan: he kidnaps Robin and sends a video message out to Batman, telling him that he has Robin and has started a Facebook poll asking Gotham to choose - either Robin dies or Sweet Tooth poisons the water supply. And if Batman tries saving Robin, he just poisons the water anyways. And he's never given any motivation, which means that this horrible Sadistic Choice and all his other crimes are most likely For the Evulz.

In Skellington's Revenge, the Black Hiver manages to be the only YouTube Poop example of this trope, his villainy being completely devoid of laughs. When Jack Skellington summons this demon to help him take over Christmas, it gives him the power to trap the souls of those who oppose him in paintings. It then enacts it's plan by trapping SpongeBob, Patrick, the RED team, the Eds and Fluttershy in its dimension just because they were celebrating Christmas. It then proceeds to kill them all in horrific ways (burning Edd, Eddy and Spy alive before eating them; throwing a rock at Patrick, causing him to fall to his death) and turns Scout, Soldier and Fluttershy into his mutated minions. This culminates when Jack undergoes a Heel Face Turn, pissing off the Hiver, who proceeds to kill SpongeBob and try to kill off Jack. As it is doing this, it admits that its goal of ravaging and dominating all the holiday realms is far beyond what Jack wanted, and that it was using Jack to achieve it. Thankfully, once the Hiver is destroyed, all the horrors it committed come undone. Devoid of any comedy, the Black Hiver was a surprisingly dark and menacing villain for a YouTube Poop character.

In Animator Vs. Animation, the villains all either have Freudian Excuses, redeeming qualities, or was not heinous enough. That is not the case with The Dark Lord. It was a animation created as a protector of the Animator's computer, but it betrayed his creator and destroyed his computer. After escaping into the internet and terrorizing its inhabitants, the Dark Lord develops a virus that he plans to unleash on every computer in the world, wiping out all sapient programs and animations. When the other animations try to stop him, the Dark Lord violently stabs Blue, Green, Yellow, and Red to death and tries to do the same with the Second Coming and former ally the Chosen One. Fueled by nothing more than his own goals and survival, the Dark Lord proves to be the most dangerous and ruthless villain of the series.