Disney villains tend to be very noteworthy, both for their personalities and their songs. However, some of them can also be horrible, ruthless, and despicable. As Disney is primarily about kid-friendly fare, please note that qualifying for this trope takes something pretty extraordinary.
The Coachman from Pinocchio. Seemingly a kindly old gentleman, he kidnaps a bunch of troublesome boys who willingly went through with it so they could do whatever they wanted without adult supervision, and laces their cigars and beer with something that, when they act like jerks, turns them into donkeys he then sells as ordinary animals (one crate is even marked "SALT MINES". Considering the Real Life work conditions there, that's a Fate Worse than Death right there). From what he says to "Honest" John, he has been doing this for years, and the police have never caught him because by the time they arrive, the boys have all become donkeys, leaving no evidence that they were even there. The transformed boys who can still talk are locked up in a pen (it is unclear what becomes of them, though we're probably better off not knowing). Worst of all, he is a Karma Houdininote Although you do kick his ass in the SNES game of the same name..
Percival McLeach from The Rescuers Down Under is a sick and twisted poacher. He starts by kidnapping Cody, a child who confronts him about his poaching, and then McLeach tricks the authorities into thinking Cody is dead by throwing Cody's backpack to the crocodiles. From there he tosses knives at Cody, locks him in one of the cramped cages he keeps the animals he's captured in, and to top it all off, ties Cody to a crane and lowers him into another river filled with crocodiles, only to raise him back up — then almost does it again just to toy with him. When the power on the halftrack goes out, stopping him from lowering Cody, McLeach takes out a gun and shoots the rope holding him above the river. Oh, and it is heavily implied that the reason he is a poacher is specifically because he enjoys hurting and killing animals.
Sykes from Oliver & Company is a disturbingly realistic villain for a Disney film. A loan shark who demonstrates his nastiness by rolling up his car window on the neck of a man who's late in his payments, Sykes has no hesitation releasing his savage attack dogs on the man's own pets. He later receives a phone call from a fellow mobster in the process of killing someone and even gives the man advice on how to do it over the phone. Sykes later kidnaps a little girl to extort money from her parents and indicates he'll feed her to his dogs. When Oliver and team frees her, Sykes unleashes his dogs after them and rides after them himself, fully intending to kill everyone.
Shan Yu of Mulan views the Emperor of China having built the Great Wall as both an insult and a challenge. As a violent Blood Knight, Shan Yu leads his horde of Huns to invade, relishing when China knows he's there. After capturing two Imperial spies, Shan Yu releases them with a message for the Emperor- but has one of his archers kill one anyways as you only need one man to deliver a message. Shan Yu later ambushes the armies of General Li at a village, resulting in a mass slaughter, not only of the soldiers, but every civilian as well, with no children spared either. Even after his army's downfall, Shan Yu attacks the Imperial Palace with his remaining men and takes the Emperor hostage, furiously attempting to kill him when he refuses to kneel to Shan Yu.
Rourke, from Atlantis The Lost Empire. He's a tomb-robbing mercenary who only cares about profit, but what cements him is his attitude toward his current assignment. He takes the Heart of Atlantis, which is precisely what keeps the Atlanteans alive. Without it, they'll all die. Rourke fatally assaults the king of Atlantis and takes the Heart, knowing that the civilization will die, and just plain doesn't care. In fact, he's happy about it, as it will make his stolen artifact worth more. Later on, in order to ensure his escape, he throws his loyal Dragon off of his ascending zeppelin. What settles his evil here is that he jokes about it, and caps it off with a "Nothing personal!" What's rather frightening is that it isn't personal; he hadn't had any problems with Helga beforehand, and betrayed her simply because it slightly benefited him.
Lotso from Toy Story 3 . He allows the toys to be tortured by the too-young toddlers in the Caterpillar room, and will do anything just to keep his reign. Here's just a short list of his atrocities: lying to Big Baby and Chuckles just so he wouldn't be alone in being lost, ordering the resetting of Buzz Lightyear, watching him beat down his former friends with a cold sense of satisfaction, beating Chatter Telephone to a pulp in order to find out about Woody's escape plan, and, in the climax of the film, he leaves Andy's toys to burn in the Incinerator after they risked their lives to save him! And he does so with a SMILE, a mocking salute and while yelling out "Where's your kid NOW, sheriff?!" And while he does have a sad backstory, there's a scene where Woody point blank calls him out on how weak it is (his owner replacing him with a new Lotso was, considering she doesn't know toys are alive, a sign of how she loved Lotso; bascially Woody says that it was Lotso who abandoned HER.)Karma does kick him in the balls when he gets condemned to an eternity in a dump due to the very emotion that he scorned.
In fact, as a result of his actions, Lotso was so hated that even the Disney Store clerkstried discouraging a IMDb commentator's mother from buying a real Lotso bear at the Disney store in the local mall. When Disney creates a character so thoroughly despised that even the Disney staff want to prevent his merchandise from being brought, that's saying something.
For the most part, this series has a well-deserved reputation for sympathetic and three-dimensional villains - Xanatos pets at least as many dogs as he kicks, while Demona has an involved and tragic backstory that keeps her sympathetic despite the often extreme evil of her present appearances. There are, however, a few unrepentantly horrible ones, and perhaps most extreme of these is the sadistic Psycho for Hire Jackal. In most of his appearances his employers manage to keep his evil somewhat in check, but the episode "Grief" more than cements his presence here - upon acquiring the power of Anubis, he attempts to wipe out every living thing on the planet just because he can.
Thailog, the Evil Twin of Goliath. Created from the DNA of Goliath, with some more from Xanatos and Mad Scientist Anton Sevarius, Thailog ended up as an Evil Genius whose only drive was his ambition to dominate, enrich himself and control what he could. Thailog seduced Demona and attempted to trick her and Macbeth into killing one another to steal their fortunes and seize control of their assets. He later revealed he had cloned the entire Gargoyle clan in preparation for killing them...even Demona herself. When Demona stopped Thailog from killing her daughter, Thailog merely attempted to kill her as well, and later resurfaced to gut Goliath with a knife to collect his DNA and potentially kill his 'father.'
Proteus of the New Olympians is a shape-shifting Serial Killer who was imprisoned after murdering the previous captain of the guard. He consistently assumes the form of his victim to mock the man's son Taurus. When he tricks his way to freedom, Proteus delights in sowing the seeds of chaos all through the city, using people's emotions against them with his powers for a sick thrill and even attempting to destroy his city and commit genocide on his own people.
In Darkwing Duck, Taurus Bulba is probably a bigger Complete Monster than the rest of the villains with almost no ounce of comedy at all. The latter are at least over-the-top funny in their Complete Monster-dom half of the time. Taurus had Gosalyn's grandfather murdered, and when he was trying to get the code for the ram rod, he threatened to drop Gosalyn off a building if Darkwing didn't get the code, he had no proof that Darkwing was told of a code, and was willing to try it, and when he was resurrected by F.O.W.L., he destroyed the dang place. All played completely seriously.
The Dark Dragon is also a nasty piece of work. While he has much less screentime than the Huntsman, he makes up for it with the sheer scale of his evil. He basically wants to corrupt all magical beings and wipe out humanity. There's a reason the rest of the dragons consider him the Big Bad and not the Huntsman (though Jake and the Huntsman have a much deeper personal grudge).
Just an idea of how horrible the scales are: On a list dedicated to the 13 most evil beings in the Magical World, The Huntsman is only listed as #4, with the Dark Dragon taking the #1 spot.
Andrei Strasser from 1998's Mighty Joe Young is an Evil Poacher definetly turned Up to Eleven and possibly even worse than Percival McLeach since he's played on more realistic levels. Killing little Joe's mother was just the beginning, he also did the same thing to Dr Ruth Young when she tries to save the little gorilla (it's uncertain if he did it on purpouse, anyway he feels no remorse about it). He also owns a fake animal preserve while he actually secretly butchers endangered species and selling the animal organs off on the black market. This guy is so ruthless that even his partner in crime decides to quit when he arrives at trying to shoot Jill Young.
Judge Doom from Who Framed Roger Rabbit is a shockingly dark villain for such a lighthearted film. Doom starts off as a brutal, anti-toon bigot who invents a chemical called 'The Dip' that can destroy Toons, demonstrating it on an innocent little shoe Toon. Doom shows full willingness to kill or harm innocent humans, either himself or sending his toon weasel henchmen after them. It turns out Doom is responsible for the murder that has driven the plot, and the death of The Hero and private eye Eddie's brother as well. He also seeks to wipe out the entire Toon population with The Dip to profit off their destruction. What's worse is Doom is a Toon himself in secret, so he is engineering the destruction of his own species solely for his own greed and cruelty.
Lord Cutler Beckett of the East India Trading company is the Big Bad of the second and third films in the trilogy. Upon his arrival at Port Royale, Beckett assumes illegal control and has the governor's messenger to the king murdered. Beckett later enslaves Davy Jones, forcing him to kill his pet Kraken and making Jones his personal attack dog of the seas. Governor Swann himself is later murdered when Beckett decides he's of no further use. It is made abundantly clear Beckett's prime control is power and control and piracy is a threat to that, particularly when he initiates a purge of anyone even vaguely associated with piracy with all legal proceedings suspended. The result is a massive line of people, many of whom aren't even pirates, taken to the gallows to be hanged. Not even children are safe, as a little boy is shown being hanged as Beckett looks on without remorse or emotion. His only emotion is a satisfied "finally" when the prisoners indicate the pirate Brethren Court is going to be called.
Blackbeard from the fourth film is also an example: He enjoys torturing his prisoners, locks them in cages and burns them alive, punishes anyone who tries to disagree with him, his horrible treatment of Syrena, and in the end, he is ready to sacrifice his OWN DAUGHTER, to save his own life. His disregard for his own daughter's life was even implied when he was ready to force Jack Sparrow to jump the gorge under the threat of her death, and ordered a mook to load two guns with a bullet each, and keep even himself in the dark as to which guns are loaded, and later lied to his daughter about knowing which ones are loaded..
Although this is better for Literature, the adaptation of this book, Holes by Louis Sachar, was made by Disney. And it has a couple of monsters, but the best example is Trout Walker. He is the grandfather of the film's Big Bad. First he has a crush on a woman; it looks like he is a good guy. But when he notices her kissing a black man, what does he do? He tells this to the whole town, and first burns the whole school building, then he kills the black manand his donkey, Mary Lou. Later, after thirteen years, when he lost his fortune due to the fact that the lake dried up, and the woman he had a crush on came back, he asked her where she buried the treasure and he tried to torture her in a most painful way in order to find out. When the woman got bitten by a yellow-spotted lizard however, the only thing he could do was to dig. And he forced his granddaughter to dig with him, he was very abusive and he forced her to work even ON CHRISTMAS!!!! That being said, it makes even the Warden, who is said granddaughter of Trout Walker, and also horrific in her own right, someone to be pitied and felt sorry for.
Princess Mombi somehow manages to outdo the Wicked Witch of the West in sheer unpleasantness: let's start with the asking price for helping the Nome King- the heads of several beautiful women. Mombi keeps these heads, still alive and still conscious, in a hall of cabinets; every so often, she'll "slip into something more comfortable" by swapping heads. And when Dorothy arrived in the Emerald City, Mombi had her imprisoned, fully intending to keep her there until she reached adulthood just so she could have a fully-mature head to add to her "collection."
Butch Cavendish of The Lone Ranger is one of the darkest villains to ever appear in a Disney film. Rumored to be a Wendigo for his unusual habits, Butch shows why when after gunning down the hero, Reid's brother, Butch cuts out his heart and eats it. Butch uses fear to oppress any hint of rebellion and will kill at any hint of complaint At one point, he even kills a laborer for nothing more than saying the entrance of a cave he wanted entry to was blocked. Butch conspires to start a war with, and wipe out the Comanche people for the silver in the mines by leading attacks on innocent people in settlements, framing the Comanche. In the past, when the Comanche saved Butch's life, he repaid them by slaughtering them, earning Tonto's undying hatred. With his evil and his dark habits, it's easy to see why Butch is seen as a flesh eating monster of myth by Tonto.
The Phantom in Phantom Manor kills Melanie's groom by hanging him in the Stretching Room, condemns the Bride to haunt the mansion forever, and now he taunts the guests (that's "us") with his sadistic tricks and humor.