<p>Of course (warning; it's quite disturbing from Patrick Bateman onward):</p><p>
</p><p>*Bane of the Darth Bane trilogy (Star Wars):</p><p>Darth Bane is the one who both destroys and reinvents the Sith. Born Dessel to a simple miner, Bane became a soldier and eventually joined the Sith Academy at a young age. Soon enough, Bane became a devotee of the Dark Side and came to the conclusion the current Sith were weak and flawed. Bane would soon abandon anything resembling morality or compassion. When poisoned, he saved his life by slaughtering a father's three young sons in front of him, drinking in the man's agony before killing him as well. He received healing only when he threatened to torture a healer's young daughter to death. When he rejoined the Sith with the goal to purge them, Bane led them in a ritual that stripped a world of life and finally tricked the leader of the Sith brotherhood, Lord Kaan, into using a forbidden technique that wiped out the Sith and Jedi armies, leading their souls imprisoned in a horrible prison for the next thousand years.</p><p>
</p><p>*Patrick Bateman of American Psycho:</p><p>Patrick Bateman is a despicable and narcissistic psychopath who moonlights as a horrific mass murderer while keeping up his public image as a stock broker. Bateman's career of torture and murder having started for no discernible reason, his most frequent act of depravity is luring women to his apartment, then brutally raping and butchering them in the most horrifying ways he can imagine. Be it nailing them to the floor, lopping their heads off, or bisecting them with a chainsaw, Bateman indulges in every act of sick cruelty he can muster, and even delves into cannibalizing his victims. Bateman's evil is so petty and unpredictable that he disembowels vagrants after giving them pep talks, takes an axe to one of his associates for, among other slights, having a better business card than him, and tortures defenseless animals. One of his crowning moments of vileness comes when Bateman slashes a child's throat, then pretends to be a doctor trying to save him, just to see how it feels, quickly deciding it isn't as fulfilling as killing someone who has lived a full life and thus loses more when he ends them. After going on a slaughter spree throughout his city, gunning down everyone he sees, Bateman comes to the conclusion that he is completely and totally wicked with no capability of care or compassion for others. Though the idea that some of his crimes were just figments of his imagination is implied, Bateman's character is nevertheless pure evil. Driven by his sadism and pathological desire to be important, Patrick Bateman fully earns the various terms he is referred to as: an inhuman, a ghoul, and a monster.</p><p>
</p><p>*Louis "Lou" Bloom of Nightcrawler:</p><p>Louis "Lou" Bloom is what is known as a "Nightcrawler," a reporter who prowls the nights for the most gruesome footage he can gather. Louis is also a total sociopath who opens the film by attacking and perhaps murdering a security guard for his watch. Once he discovers the money in reporting, Louis devotes himself wholeheartedly to the endeavor. He blackmails his boss into sleeping with him once his position is secure, knowing that she needs his footage. Lou sabotages the brakes of a van belonging to a rival, so he can film said rival dying on a stretcher. Lou later reports gang violence as a home invasion, so he can create a panic-laden story of urban crime creeping into the suburbs, and later engineers a confrontation with the police in a crowded diner, so he can film the resulting carnage as gang members, police and innocent civilians die. Finally, Lou follows a car chase and when one of the gang members crashes, Lou lies to his assistant Rick that the gangster is dead, causing Rick to be shot dead by the gangster once he goes over to film the body; the motive was Rick wanted more of the profits. A media sensation with his new company of Video Production News, Lou covers his lack of humanity with a seemingly friendly mask, all the while promising his new employees he'd never ask any of them to do something he wouldn't do himself.</p><p>
</p><p>*Alan Yates of Cannibal Holocaust:</p><p>Alan Yates is a traveling filmmaker with a sadistic streak. Not above staging events for his documentaries, Yates and his crew embark to South America in search of cannibalistic indigenous tribes. When Jack wounds a Yacumo man, they follow him to his village. Once there, Yates forces the tribe into a single hut and sets it ablaze. Locating the Yanomamo, or Tree People, Yates and his crew take advantage of the fact that the tribe wouldn't attack them lest provoked by partaking in filming themselves gang-raping a helpless Yanamomo woman. When they later learn that she had been impaled—crotch-first— as punishment by the natives, Yates—unfazed by the sight before him—is thrilled by what he had done. He also has no qualms with sacrificing his own crew when it suits him as he shoots Jack so that he could film the vengeful tribe desecrating his body. He even betrayed his girlfriend Faye to be gang-raped and eaten by the Yanamomos just so he could film it.</p><p>
</p><p>(credits to TV Tropes)</p><p>
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