Bob Garrison from the Fan Work of Cold Case Season 8: he has a sadistic love of torture, tries to kill a witness for watching him torture a man to death, and, finally, in his crowning act of evil, he has his men murder and frame a recovering alcoholic in order to trick people into thinking his murder was a mugging.
The Firefly fanfiction Forward has Inducer One-One-Nine, aka Kathryn Wade, and a prime example of how subjective this trope is. She's undoubtedly sociopathically violent, with brutal Mind Rape and mass murder as her first resorts, and she's killed no fewer than a thousand people. However, she is also a definite Woobie, Destroyer of Worlds given the horrors she's suffered and being only nine years old, leaving reviewers torn between loathing her and pitying her.
Ein Woe seems to be this trope...but one of my biggest changes was making the real monster in this scenario Lawrence Vist-Acturia, who is actually Lucian Vist-Acturia, following a Twin Switch. Lawrence/Lucian believes the world is based on lies and is not the true Earth. He is right, but the World of Gaea's existence is equally valid as Earth's. Instead of accepting this, he blamed this "world of lies" for his suffering throughout his early life, and essentially made Ein Woe, Zachaia, Frederick (his own FATHER), and Cal evil in the first place through careful Manipulative Bastard behavior. As soon as Cal realizes that the magic he wanted to use just plain doesn't exist, Lucian rips him in half while mocking Cal's Knight Templar Fundamentalist behavior as "sealing the deal that you go to Hell, Cal. Its so funny! Its just fucking hilarious! You were so faithful to your religion...too bad you took some tenets a bit more seriously than others. You got nobody to blame here but yourself." Following this and an evil costume switch, he just gets worse and worse.
Clown (AKA Mayuri Kurotsuchi) in the Bleach fanfic 'Clown'. As far as fictional serial killers go, he is one of the most vile, evil creatures ever conceived. Mayuri tricked Ichigo's mother into going to an abandoned warehouse to talk about her son. A scene was not dedicated to it, but it is explained that she was brutally murdered, gutted, and then hung from the roof by her own intestines. Ichigo is also led to the scene where he discovers his mother. He feeds someone through a mulcher, eats children, and horrifically tortures most of his victims.
Master Samuel from The Adventures Through Runescape. He crossed the line early on in the story when he kidnapped, gruesomely tortured, and murdered a Herblore mage just so he could get the recipe for his potion. It's a crowning moment of awesome when his hand is sliced off by Haru while trying to get the second ingredient of his potion, although his right-hand James ultimately replaced it with some claws. And then he gets worse. He forces Dream Decay to betray Mainiac97 by holding his girlfriend hostage, brutally tortures him with the God Rune, and kills Dream Decay right in front of Mainiac97. It's a pretty sweet moment when he gets what he deserves near the end of the story.
Dirty Potter brought us an evil version of Winnie the Pooh (although, arguably, his villainy is played for laughs). While he acts no different from the other characters in Parts 1 and 2, he sells his soul to the devil in Part 3...and that's when he starts crossing the Moral Event Horizon...
The Day of the Barney Trilogy turned Barney the Dinosaur into one of the most evil characters ever created in fan fiction. Convincing the children to start a Holocaust that wipes out much of the adult population, he proceeds to murder all children that reach the age of 13 simply to prevent them from reaching adulthood, one of which was Jeremy's best friend Cameron. Once he is accidentally shot in the arm by Jeremy, he attempts to brutally murder him, only to be stopped by Fran. He becomes even worse in the sequel, turning Jeremy's children against him and is also revealed to be responsible for many infamous events throughout history.
His henchman Baby Bop is just as bad, considering she impregnated teenage girls with Loved Ones that bursted out of their stomachs and gleefully assisted him in his horrific deeds throughout the fanfic.
From Neon Genesis Evangelion fic Nobody Dies, we have Iruel. During a synch test, he traps the pilots and Mana in a Lotus-Eater Machine and turns their dream worlds into horror. The only thing keeping the chapter from being 100 percent nightmare fuel is Rei's scenario.
Hetalia Dark Fics like the infamous Financial Crisis Gangbang revel in this trope. In such cases, most if not all of the characters are reduced to this.
Debt has China as this. He is annoyed that America and England have not payed off their opium debt. In return, he does things that, as one person said, "make Hannibal Lecter look like Mother Theresa". Among other things, he chops off America's arms and England's legs, rapes them dozens of times, humiliates them, snatches out their eyes, skullfucks England through his socket, whores them out, has them raped by dogs, slices out their tongues, feeds them dog food, uses the infamous medieval "pear" on them, tears out their toenails, and does some weird Pavlov's dog thing with them. Meanwhile, all the countries have been hit hard; China tells America and England that no one missed them. In Hetalia canon, China is actually one of the kindest and most sympathetic characters, and compare it to...well, this.
The same authors did the same thing to Canada, making him cut his own brother's limbs off for the crime of not remembering Canada's name (though, admittedly, that has happened a lot). Then, in the same fic, made every single other character into Complete Monsters, torturing and raping America just for the heck of it.
These are not the only fics that reduce China to a caricaturesque monster. One that's thankfully a Missing Fic has China torturing and raping a wimpified Hong Kong within hours of the 1997 Passover Ceremony and leaving it clear that he will rape the poor kid every single day from then on. Another, Dollhouse, has him as at least a borderline example: China is at first shown as a troubled nation who cannot handle his decline and is both despaired and shady (the second shows specially when he subjects child!Taiwan to foot-binding), but then he becomes this by not only getting the already broken Taiwan into opium, but by violently raping her while high and taunting her on how she can't get away from him due to her bound feet. Again, compare this to his canon characterization and step away slowly.
They get off light compared to what Japan undergoes, especially in fics set during his imperial years, where he remorselessly tortures and rapes a wimpified China during World War II or imprisons/abuses/rapes Taiwan, Korea, Hong Kong, and/or Thailand For the Evulz.
Let's not forget Turkey. It was extremely common in the early days of the Hetalia fandom (and still is, to an extent) for Dark Fic about his history with Greece to have him rape Greece as a youth or child and mock him the entire time while doing sowith a smirk on his face and display absolutely no remorse about it. It even shows up sometimes in Turkey/Greece shipping fics where Turkey is a Bastard Boyfriend who gets off on raping Greece or generally does everything in his power to make him feel like dirt.
Pokémon Storm Clouds gives us Masque, a Team Rocket agent who specialises in using hypnotic powers to strip Pokémon of their identities and make them his willing servants. While initially presented as an ambiguous figure in the story and somewhat Affably Evil, he is gradually revealed to be a sick, twisted individual who enjoys the amount of control his mind games give him over others. He takes pleasure in stripping Pokémon of their identities and secretly manipulates all the higher-ups of Team Rocket for fun. He later breaks away from Team Rocket and attacks the hometown of the protagonists. While he does have an ulterior motive, it's still clear that he takes a disgusting amount of pleasure in terrorizing and slaughtering the residents of the small town with his Pokémon. When one of the protagonists call him out on his manipulations and accuses him of viewing humans as nothing more than tools, he responds with a chilling quote that really tells you all you need to know about this guy:
Masque: I don't see human beings as tools. That distinction is reserved for Pokémon. No, I see people more as... toys. There's a distinct difference, you see. A tool is used to accomplish something, while a toy is just there to be played with. I wasn't using Giovanni for anything other than my own amusement. And like any toy, he eventually stopped being entertaining—and when a toy bores you, there's only one thing to do: snap it in half and throw it in the garbage. That's it, end of story.
The Code Geass fanfiction Code Geass Mao Of The Deliverance has a few of these. The first is Dr. Huai, a sadistic psychiatrist who abuses the mental patients in his care and experiments on them with Refrain. It's also implied he gets sexual satisfaction from doing so. Although he's got a (admittedly very ugly) Freudian Excuse, it's only revealed later on and is barely relevant to any of his actions. Later, there are the scientists at the Rosenberg Institute, whom even Dr. Huai is afraid of, who fund his experiments in order to develop a version of the drug that could addict the people under their control and, Mao discovers, have been killing C.C. in various gruesome ways to test the limits of her immortality. Compared to any of the abovementioned characters, Mao looks downright decent!
Darthipedia, a parody of the Star Wars Wiki, brings us Darth Elmo. Describing his birth as the birth of pure evil, Darth Elmo starts his own planet destruction team, causing countless deaths throughout the galaxy. It's not a surprise that even other villains, such as Gunter and Darth Bob, despise him. He attempts to kill Kermit single-mindedly simply because he distracted him from Big Bird while he was in war. After he was killed in action, After Bert takes over his planet destruction team during his kidnapping and changes it. He attempts to kill him (his second-in-command, by the way) by dropping inflatable forklifts on his head, and only forgives him when he eats his own head while standing on a pineapple in space. He ultimately ends up killing himself because he is so paranoid he believes that even himself is an enemy to him. He also planned on killing his own boss afterwards, for seemingly no reason at all. It's entirely played for laughs, but still...
From Yu-Gi-Oh!! Fanfic Tilting the Balance, we have Jacob Waterknot, who is willing to kill and slaughter people for his own gain. One of the most triumphant examples, the line crossing is when he plays a card that, in normal game terms, call down several a dozen meteors and destroy the field. However, he made the duel as real as it could be. The meteors were real and destroys a good portion of St. Paul, killing countless people just so he could attempt to defeat one person.
Deoxys from Latias Journey is one of the most shining examples of Complete Monsters in Fanfiction anywhere. His first action after coming to earth is murdering and torturing a small Pokémon child after his twin was just murdered before his eyes. Over the course of the story, he maims, murders, slaughters, mutilates, mindfucks, and does everything in his power to make the heroes' lives a living and total hell. He nukes several heavily populated areas around the world with his virus to acquire more mindless minions for his goal (and I would like to point out that every single one of his minions is in agonizing pain every second they're existing) and will do everything and anything to punish those who gets in his ways. In fact, he says it perfectly when questioned why he does all of his atrocious acts.
Deoxys: Because it is my wish. Because they were in my way. And most importantly, because I can.
In the sequel story Brave New World, the Nihilators are MADE of this trope. We could list all of the monsters here, but there's a more detailed list on the page. Although, bizarrely enough, the aforementioned Deoxys has made a Heel Face Turn. Justified because of the new world and because both Deoxys and the Mother came together as one, so he isn't really the same one. Before, he was pure evil (see quote above) and apparently anything evil could be traced back to him. Now, he's more of a Hive Mind and a local deity.
Ultimate Sleepwalker: The New Dreams has several of these: the demonic Cobweb, who imprisons Sleepwalker in Rick Sheridan's mind as part of a larger Xanatos Gambit and later Mind Rapes one of Rick's friends into committing suicide less than two days after Rick's birthday; FeverPitch, a Manson-like cult leader and serial killer who voluntarily transformed himself into a fiery skeletal monstrosity as part of his divine crusade; Jack the Ripper, who returns to terrorize New York City in the twentieht century; and Psyko, a terrifying monstrosity who subjects his victims to their worst nightmares while they're wide awake, even as he uses their bodies as People Puppets.
Jerry Tagger in the Pokémon fanfic A Little Night Music. For the majority of his life, he has believed himself to be "superior" to ordinary men, and, as such, he does not care what effect his actions have on other people. This may not sound so bad, but wait till you hear how he tested his belief: when he was eight years old, he reasoned that a truly superior being would be able to kill without feeling anything, so he set his own sister on fire to see how he would react. He felt nothing.
Shinji and Warhammer 40K has the usual Neon Genesis Evangelion examples of Gendo and the members of SEELE, but also manages to have a surprise example with Kaworu. He is directly responsible for the deaths of millions of people and sees nothing wrong with, say, dissolving helpless humans into a formless lump of biomass or twisting them into mindless daemons, managing to surpass both the Angels and SEELE combined in sheer cruelty. Making it worse is that he genuinely believes he is working towards the Greater Good, but actions speak louder than words.
Zhan Zheng and Ilook from the Azula Trilogy. Zhan Zheng is the personification of war and manipulates various individuals to try to start another war. Ilook is a sociopath who loves torturing others and who bastardized waterbending into an art of destruction.
The Team Fortress 2 fanfic Respawn Of The Dead gives us RED Spy. Not only did he play his own teamates like a fiddle (planning their deaths, to boot), he also made sure to get Soldier and Heavy killed first, to make it easier to get rid of the others (and, in the case of the latter, convincing him to die for Medic's sake), locked Medic and Pyro in a room full of zombies, and then invited Engineer to help him rape Sniper. When he eventually gets his just deserts, they're well-deserved.
The Total Drama Island fan fiction Lost and Found has Gwen's dad: he abducts Gwen's mom and brother and sets her home on fire to fake their deaths so that Gwen ends up living with him, and once she gets there, he starts beating her daily and cuts her whenever she tried to do something about it, threatens to kill Gwen's mom and brother who he had locked up so that she'll do whatever he'd tell her, shoots a maid in the face with no second thoughts because she tried to stand up for Gwen, and it was revealed that he only had her around so he could use her to make money off via modeling gigs and having her win a season of Total Drama. He meets his end when the girlfriend he betrayed and killed after she grew a conscious shot him in the chest before she died.
Hollowmoon from Fill the Moon is a colossal Eldritch Abomination that gleefully destroys anything he can. It's heavily implied that it drove the protagonist to suicide, he destroys a village, eats most of the villagers, and eats the hearts of the Apprentices.
His sister, Kingdom Hearts, isn't much better. They're implied to have an incestuous relationship, and she/it openly states that she and Hollowmoon drove Senayax—the adorable little woobie—to suicide to use her as a pawn for their games, while she had just actually stolen Senayax's body and was wearing it like a second skin while discussing this with the Organization.
Oh, and the best part? After Zexion dies in a Heroic Sacrifice and Senayax commits suicide by Keyblade, Kingdom Hearts openly states that she could heal them but won't, just so she can take advantage of their state and eat Senayax's baby. She/it's not just the Anthropomorphic Personification of Kingdom Hearts, she is the personification of pure, unadulterated, puppy-kicking evil.
And now there's a definite new one in Larxene's husband. He goes from rapist to a monster who would lock his wife in a box for three days without food, clothing, or water, just for not cleaning properly or some other petty offense. He's also implied to have raped her with a knife, bitten her, burned her, beat her, and threatened to cut off her breasts. While Hollowmoon and Kingdom Hearts have the excuse of being Eldritch Abomination monsters and thus not subject to human morality, Larxene's husband is absolutely human and absolutely monstrous.
In the Pokémon fanfic Reunion, there are a bunch of OC and returning villains who do horrible things, but there are two characters in particular that stand out as complete and utter monsters. The main antagonist, an OC named Nathanael Butler, starts off just looking like a regular asshole, seeing as how he hits on all the female characters. However, it soon becomes obvious that he intends on raping several female characters, more obvious when he tries to rape Misty, and successfully manipulates sort-of OC character Ka into having sex with him. He also intends on back-stabbing Team Rocket, who is helping him out, by stealing a powerful Pokemon that he's offering funding to develop and murdering countless people in brutal fashions. The other monster is Rocket Elite Frollo (probably an allusion to another Complete Monster), a psychic who kills thousands of people and Pokemon and assimilates their souls into himself to increase his psychic powers. Neither character is given an explanation for their powers, and both suffer a fate worse than death...
Count Fernando VIII in Pokemon Ranger and the Gardener of Gratitude, part of the Pokemon XD Enigma Shadow Series. He expresses extremely sexist views against women, believing them to be nothing but sex objects (parodying his obvious Bishounen appearance). He also murdered at least three people in cold blood - his own parents and an elderly man - for the purpose of obtaining information to advance his own goals. Eventually, he gains control of one of the Olympus Mons and begins destroying his entire city, explicitly getting off to the suffering he's inflicting.
Naga!Riku from Naga Eyes was probably not intended to be this, but from a non-vorephile's perspective, he's definitely this. To wit: the second Sora arrives on his island and he initiates a long and brutal rape. Sometime during all this, he starts to eat Sora, still raping him during it. Eventually, Sora gets down to the stomach, where he uses a shuriken still stuck in his hair (despite the fact that Kairi had apparently removed them a while ago) to cut his way out. Unfortunately, it does absolutely, positively shit to Riku, who decides to make him his eternal pet.
The Avatar: The Last Airbender fic The Fall Of The Fire Empire features an elderly Azula in a world where Ozai succeeded in conquering everyone. She finally hits her Villainous Breakdown with the realization that there is no way she can escape her impending death from old age, so she decides to go out in a blaze of glory, starting a war that will probably kill a good percentage of the world's population, and also set things up so that she'll be remembered as a hero who tried to stop that war. Making this even more disturbing is that the story was written by the same person as the Azula Trilogy mentioned above, which gives Azula a very believable Heel Face Turn. And for a while, he was even writing both stories at the same time.
A lesser example who should not be overlooked, regardless, is Gian. Ruthless and sociopathic, he doesn't care who is in charge of the world order or who his employers are, so long as he's paid for his services - which involve murder. In a rather telling scene, he brutally kills an Earthbender slave girl - not because she posed a potential threat (she was rather meek, actually), but simply because she'd served her purpose - and simply dumps her body into the lake. Mercifully, he's also the Climax Boss for the First Act of the story and suffers a Cruel and Unusual Death when Jiazin stabs him with her blazing sword - a blazing sword with blue fire - and burns him from within.
In the Pokémon fanfic Dark Growlithe, an Eevee turns into one. Unusually well-written in that he started with a terrible but reasonably believable personality and the evil just sort of grew out of it. His punishment is brutal and descriptive, and oh so very wonderful.
The Neon Genesis Evangelion fanfic Witness poses Ritsuko as a sadistic bitch who seduced Shinji and later forced him into committing various sexual depravities. Not only doesn't she feel any guilt for it, but Gendo lets her get away with itbecause she's too important to NERV.
Another Evangelion example is Taboo Parallel where Yui claims that the real reason Kyoko went insane and killed herself was because she was a slut but suppressed it. She sees Asuka's tsundereness as a warning sign of Asuka suffering from denial as well. Yui's response? Use her connections in a pharmaceutical company to create a very potent date rape drug with aphrodisiac properties, then have two guys use it on Asuka and Rei to repeatedly rape them while filming the whole thing as blackmail material to prevent Asuka from not complying (due to the drug, Asuka is behaving like she's a willing and very eager participant). Apparently, Yui wants to prevent Asuka's self-destruction by forcing her to turn into what Yui claims Asuka is suppressing; Yui also knows about Asuka's crush on Shinji and claims that Asuka's self-destruction would pull Shinji with her as well, hence why she's turning a teenage girl into someone who can only relate to people via sex and is completely incapable of loving anyone. Makes sense, doesn't it?
It gets even better: Asuka's ordeal is exactly what triggers her attempted rape of Shinji, making it impossible for him to return her feelings. Then it turns out that Mana is in on Yui's crazy plan as well because she loves Shinji but hates Asuka for loving Shinji as well; end result is that Mana is an eager participant in Asuka's torment and sets up Shinji to witness how far Asuka had fallen to eliminate any possibility of Shinji actually having feelings for Asuka. That's two Complete Monsters now.
Speaking of which, the two guys working at breaking Asuka? One of them is only in it for the sex while the other is the Unlucky Childhood Friend of Mana and is only venting his frustration on Asuka...at first. ThreeComplete Monsters for the price of one!
And now we have a FOURTH Complete Monster! Ritsuko joined in on the fun as well, forcing Asuka to work as, in her own words, "a special sex education lecture to a few students who have shown an affinity for certain potentially unhealthy habits."
The Naruto fanfic Naruto Vs Sasuke The Aftermath has Sasuke and the rest of the Sound village, who rape and kill just because. Sasuke rapes Sakura just because she wanted to join him and for some weird reason, this is treated as a Kick the Son of a Bitch moment.
Also, the fanfic Janita has Air Jay, who kills people on a whim.
Fedt-geszhine, of Yukari Is Free. Currently holding the highly-coveted title of "Most Evil Character", Fedt-geszhine is the bespectacledDragon of Warmaster, the head of the Veluszhi Imperial Army. Fedt is a genius who is currently working on his life goal: learn everything. He once locked himself in a cage with an angry, rabid animal just to see if his regeneration serum worked (It Did). He isn't above using living human test subjects for his experiments or just for fuel for the bio-reactor. And when he was a child, he killed his mother, just so he wouldn't get in trouble for drilling a hole in his baby sister's head.
Total Drama Letterz has Kasimar. From his violent nature, his blue mohawk, and the fact that his stereotype is The Complete Monster, he is pure evil in most readers' opinions. Word Of God confirms HE is the main antagonist, not Tabitha, not Nakia, not Wallace, and not Daisy. He is, in a nutshell, sadistic, sexist, violent, cruel, perverted, and directly responsible for serious injuries other campers have received. Even Tabitha has a small simmer of kindness deep within her, but not Kasimar. Chris Maclain actually tilts the game in Kasimar's favor and points out several unfair loop holes just to keep him in and raise ratings. Though Word Of God has heavily hinted that Kasimar meets a delightfully sticky end, he is still in the competition currently. He is considered by some to be the most evil OC in the whole fandom.
It seems that even the Tales Series fandom is big on having evil characters if the fangames are anything to go by. Tales of a Twist, a parody of Tales Of Symphonia, gave the protagonists elements of this trope. Colette delights in watching the suffering of people relatively early on. While the dialogue tries to play all of this for Comedic Sociopathy, it doesn't really excuse the fact that they blew up a Human Ranch with the humans still inside it. Tales of the Ocean, however, doesn't play this for laughs. The main protagonist turns out to have been Evil All Along and was responsible for drowning the entire island he grew up on because of the racial prejudice against him, and the only thing he regrets is that his Morality Chain got hurt. All those hundreds of deaths on his head? The fact that he smiles while telling you all this should say it all.
The Legend of Spyro: Zonoya's Revenge incarnation of Malefor is even worse than his canon counterpart, and that's saying something. To start, he has the newly corrupted Cynder slash out Zonoya's, her best friend, eye and left her thinking Cynder betrayed her, making Zonoya's grudge on Cynder his doing. This means he's indirectly the cause of all the horrible things Zonoya did. The emotional Mind Rape he subjects her to. And let's just say his plan to destroy the world could be considered merciful to his vision of ruling it.
Dredd, the commanding Ape in the Tall Plains area in The Legend of SpyroRetelling: A New Beginning, fits this big time. His Establishing Character Moment is trying to get information out of Kane by dropping one of Kane's tribesmen to his death from several thousand feet. He then tells Kane he intends to kill as many of the Atlawian Tribe as he has to in order to get the information he wants, happily adding that he might use some of them as target practice. What does he want? The few, very minute mining deposits they have left that the Ape hadn't already pillaged from them. He only gets worse after his Villainous Breakdown when his Bad Boss tendencies begin to kick in...
Mobile Suit Gundam's Prince Ghiren Zabi was never a nice guy to begin with. However, it could be argued that his entire character boiled down to his desire to conquer the earthsphere. Zeon Quest, however, shows what Ghiren is willing to do in order to rule, from masterminding the notorious Operation British, fully aware of the massive civilian casualties it will cause (and it's hinted that he lied to his family and allies to get it approved), to trying to nuke neutral civilians so his rival siblings will get blamed, to blowing up a friendly island just to ensure his forces will have a monopoly on producing advanced mobile suits. And much like his canon counterpart, Ghiren has no problems with killing his father to stop a peace treaty (and his own prosecution for war crimes). But in this fic, he also shows that he has no problems killing off the majority of supporters as well, and his plan to sell them all out to save himself. His obsession with conquest at any cost turned him into The Caligula.
In the Harry Potter fan fic Notebooks And Letters, Severus Snape. Although helping the trio and the others escape from Malfoy Manor, he refuses to do so until Harry drinks a specially concocted potion that will completely wipe out every pleasant memory Harry has, until he is ultimately left with nothing but his self loathing and a seething hatred for the entire world and all of those he once loved. Snape sees this as his ultimate revenge against James Potter, having refused to accept any responsibility for losing Lily, and as seen in a pensieve memory, relished that Harry would have to die against Voldemort and had asked Dumbledore if HE could be the one to kill Harry. When the group have escaped, Snape slaughters any survivors and burns the mansion down with Fiendfyre, and then kills himself so as not to face any repercussions.
The Blood+ fanfic Nobility has Didier, who will kill anybody who supports Anjou. At first, it appeared that he simply wanted to become the chiropteran king. However, it is revealed that he had several chances to kill Anjou, but he disregarded them in favor of Mind Rape.
The Touhou fanfiction Imperfect Metamorphosis has charming, genial Yuuka Kazami. She will (and does) kill people for mildly annoying her, enjoys "games" (i.e. brutal torture), and absolutely loves children, all because it amuses her. She has her standards and is unpredictable enough to often leave people alive inexplicably, but there is a reason everyone in Gensokyo voids themselves at the mere mention of her name.
Actually, as long as you don't break her rules, she's quite predictable. She wouldn't have killed the two humans in the house she moved into if they had welcomed her as a guest rather than thrown stuff at her and screamed, and if she gives her word in a deal, she will keep it. As long as you do as well. If Yukari hadn't brought an additional TEN people to what was supposed to be a one-on-one fight, she wouldn't have brought Elly. And outnumbered 11-2 ,she still won and killed Satori and Flan. Yukari breaking the deal didn't work as planned. As long as you don't break your word and treat her with respect and proper etiquette, you'll survive. Knowing that YuukaKazami is just waiting for you to slip up might make you nervous, which could cause you to forget your manners, which...brr.
The Shadow Youkai is no slouch either. Essentially the Anthropomorphic Personification of death and destruction, it delights in havoc and carnage, but, even rendered relatively powerless, demonstrates an incredible fondness and proficiency for Mind Rape as well, shattering the mind of one of its "captors", and is motivated by nothing but raw sadism.
The Council from Naruto Veangance Revelaitons is going this route. They're willing to kill large groups of innocent people after losing a Cooking Duel, and their ideal world is the opposite of Ronan's (but otherwise killing anyone who doesn't agree with them on religion, music, and sexuality), with the only difference being that theirs is actually portrayed as evil.
The last place you'd think to find one is My Little Pony fanfic, but Cupcakes manages to completely destroy ANYTHING that resembles what a MLP fic should look like. And with Pinkie Pie and Apple Bloom of all ponies as the culprits. Pinkie tearing off Pegasus wings, cutie marks, and unicorn horns and wearing them like a dress are only the least of the crimes committed.
On that note, Eppaljeck. Her Establishing Character Moment involved killing Pinkie Pie and Applejack, right before murdering Painis Cupcake. Her next appearance has her torturing Vagineer, right before killing him. One could possibly justify her killings of Snyphurr, Staregineer, or even Dangerous Bacon, but any respect for her vanishes when she murders Derpy. After this, she is implied to have raped the Demoman over a kids show. However, it really shows during the 4th video in the series; she prevents the innocent bystander from the first video from escaping and proceeds to blow him up. When Fluttershy stumbles upon Eppaljeck's room (filled with even more Eppaljecks), she finds that Rainbow Dash has been used as fireplace fuel. Whilst Rarity is mourning at a graveyard, Eppaljeck rips the graves out of the ground and crushes her to death with them. Twilight Sparkle tries to send a letter to Celestia to find out how to stop Eppaljeck, but is soon interrupted by her. Fluttershy tries to bribe Eppaljeck with chocolate to stop her from killing Twilight, which works...right before Eppaljeck turns Twilight Sparkle into a doughnut and force-feeds her to Fluttershy. Needless to say, it's extremely satisfying to see her meet her end...and really terrifying to see a swarm of Eppaljeck clones appear out of nowhere.
Lets just look at Eppaljeck's kill count: Pinkie Pie, Applejack, Painis Cupcake, Vagineer, Pyro, Weegee, Scout, Snypurr, Staregineer, Dangerous Bacon, Derpy, Engineer, Chuck Norris, Heavy, Demoman, Mane 6, Tails, Knuckles, Sonic, the pedestrian, Rarity, Rainbow Dash, Twilight Sparkle, Travis Touchdown, Deadpool, Fluttershy, Dr. Hax, Kenny, and then maybe the entire plant.
Lest we forget, Princess Celestia, the mare who sent Twilight out on this mission in the first place.
Frigid Winds and Burning Hearts gives us Captain Braveheart, commander of a Royal Guard Pegasi unit. Using his rank and the current crisis, he flagrantly, rampantly, and gleefully tramples over all he perceives as getting in his way. Every chance he gets, he gloats about how superior he is to the commoners he's crushing and views Luna's supposed rebellion as nothing more than a chance to prove he's better than a princess. Not that he doesn't care who gets hurt in the process — no, rather, the more the merrier!
In the My Little Pony Friendship Is Magic/Doctor Who crossover Time Lords and Terror, the Smooze from the G1 movie is reimagined as the S'muz, an omnicidalEldritch Abomination that seeks to devour the multiverse and absorb the psychokinetic energy it believes other life-forms have "stolen" from it, is gleefully willing to torture anyone that gets in its way, and refuses to stop until it's the only thing left in all of existence.
In the sequel Mines of Dragon Mountain, Tirac — the villain from the G1 special "Rescue at Midnight Castle" — is likewise reimagined as an ancient demon who feeds on negative emotions (hate, despair, etc), and thus started a war on Equestria half a million years ago in order to feed on those emotions on a global scale, a war that wiped out several species, leveled continents, and killed most of Equestria's gods, before he was sealed away. In the present, he corrupts and possesses Gabbro, turning him into a Knight Templar, before attempting to fully escape his prison by wiping out a city and feeding on the pain of the deaths of thousands (if not more). And that's not even counting the murders, tortures, and other sick stuff he does purely for the sheer joy of it. Also, giving him bonus points for both shows; first, it's revealed that he's also TheBeast, and then the epilogue reveals that he's Discord'smaster. So, yeah, he's one evil bastard.
He gets more points (not that he needed them) in the following story Atmos-Fear, where it's revealed that he's the one who created the changelings. Now bear in mind that, going only by canon appearances, the changelings' Queen Chrysalis is arguably worse than Discord, and in this story's universe, we can blame Tirac for her existence.
The version of Discord from the Pony POV Series is easily a bigger monster than his canon self, despite having the same personality essentially. The difference is that he actually gets to the absolutely horrific stuff his canon self never did. For example, he publically announces to Cloudsdale that Rainbow Dash betrayed all of Equestria for her sake then drives the entire town insane right in front of her, pretty much making her watch. But that's nothing compared to the Bad Future we're shown that would've happened if he had won. To put this in perspective, him raising the dead to devour their friends and loved ones is apparently common place under his rule! And that's pretty much the least monstrous thing he's implied to have done. Dying is pretty much a blessing compared to some of the other things he's done to ponies...
Applejack's story shows us that, even in the present, this version of him is a total monster. Applejack gets a look at what his rule over Equestria did to a bunch of other ponies. The sadistic things he put everypony through are just horrific. For example, having Silver Spoon's father attempt to behead her. And unlike the canon version, the acts of this Discord are without a doubt Mind Rape in every way, shape, and form. This incarnation of Discord has an extremely sick sense of humor!
His Moral Event Horizon (established as his first act in the canon of the story to count as such) is Mind Raping Trixie into believing she doesn't exist. Why? To pretty much warm up for breaking Twilight. She is no threat to him, she can't do anything to harm him. He did it just to try out his method of breaking Twilight on someone.
Luna's Side Story has added three counts of genocide to his list of crimes, which he mentions as if they're no big deal to him.
In a sidestory, which is veryLoose Canon, we find out he's not the only Draconequi (or WAS not) and that his race isn'tAlways Chaotic Evil. His brother Anarchy is Chaotic Neutral at worst and helped save the universe (though admittedly in a very cruel way, but one he'd not be doing at all if there was any other option) along with the rest of his siblings. What's Discord doing? Turning the Flutterponies in Parasprites For the Evulz! Even by his own race's standards, he's considered a Jerkass. To add to it, Word Of God refers to Discord as an "egotistical sadistic hedonist" and pretty much considers him a Complete Monster. This is worth note as this is an author who actively encourages Alternative Character Interpretation with almost everything else, but makes it very clear that Discord is a monster.
About those genocides? He let the sea ponies die by "forgetting" to turn their ocean back into a desert. The Flutterponies? You Do Not Want To Know. But in case you do, three words; Public Butterfly Collection. What he did to their queen is even worse. He made her immortal so she'd be forced to live forever, seperated from her murdered subjects.
The hits keep on coming for Discord — running throughout the Reharmonized Ponies series (but primarily in the Mind Games arc), he psychically manipulates Diamond Tiara into freeing him by promising to cure her mother's insanity in return, and Mind Raping her whenever she starts doubting herself. By Mind Games part 5, he's not only talked her into killing some poor filly she barely knew, but it seems the trauma of all this has driven her completely, tragically insane. And he considers this his greatest accomplishment!
This series also gives us Angry Pie, a fractured piece of Pinkie Pie's psyche that attempts to brutally kill and eat the other parts of her personality to take over. She actually seems to enjoy doing this to some degree and effectively murders Pinkamenia's imaginary friends right in front of her. There's no indication these are more than just her imaginary friends, meaning Angry Pie doesn't have to do this, she just chooses to. What's worse is she was this close to succeeding and taking over.
"Epilogue" gives us the Bad Future versions of Fluttercruel and Angry Pie. Angry Pie is prone to brutally murdering anypony she thinks is laughing at her and is implied to have even killed her own pet alligator Gummy and mounted his skin on her wall. As for Fluttercruel, the only thing we learn about what she does is "you don't want to know what Fluttercruel does". Given the other terror-filled details Twilight Sparkle's Bad Future self has no problem telling us, that thought is pretty dang horrifying. Thank Celestia things change in the real timeline...
Rainbow Dash plays a particularly horrifying monster in the story "Rainbow Factory". What happens to the pegasi of Cloudsdale that fail the flight test? Banishment? Slavery? Oh no, it's much worse. They're taken to a secret room in the Weather factory, where they are brutally mutilated and melted down, ALIVE, into "Spectra", the supplies for making rainbows. And Dash has been doing this for YEARS.
Actually, there's a ending made by the same author, albeit a unofficial ending, where Dash manages to advert this trope by feeling remorse and regret for what she's done, more specifically to Scootaloo.Dr. Atmosphere, on the other hand, is nothing short of an evil bastard, who has no problems with what he does.
In the MLP fanfic My Sweetie, we have Derpy's mom, who pretty much cements herself as one when she abandons Derpy in the Everfree Forest simply because Derpy's presence cuts into time shared with Derpy's dad. Sufficed to say, this troper was glad that Derpy's dad divorced her.
Two Slayers - One Heart, a Buffy the Vampire Slayer fanfic, gives us a Complete Monster version of Amy Madison, who sets traps designed to kill very young slayers, watchers, and people she's never even heard of— all because those people are friends of Willow Rosenberg, whom she hates psychopathically. She also gets turned on when she discovers that her girlfriend, despite being built like the proverbial brick house (and a psychopathic murderer in her own right), is only thirteen years old. Amy even whistles cheerfully as she prepares to sacrifice a seven or eight year old girl in an attempt to bring back the First Evil and open a new Hellmouth.
Just in case KyuBey wasn't too bad in the original, you get to have TorBey. This time, as KyuBey's lackey, he forgoes all that which KyuBey at least attempted, from the fact that he doesn't bother to grant any wishes, to the fact that his purpose is to destroy the human population of Earth, he is more than qualified for a spot on this fine list of horrible villains.
Hiro Hikoro from the Naruto/Basilisk/Claymore/Fullmetal Alchemist RP I do with LS. Let's see, he's the reason why Dark Action Girl, Biri (later retconned into a WoobieAction Girl) became what she was: he controlled her through sex and made her do things she didn't want to do by using a seal that he forced his late father to teach him. He pulls the wool over A-The Raikage's eyes and becomes the Godaime Raikage...ushering a rain of terror over Kumogakure that makes Yagura's of the Bloody Mist look tame. Finally, after Kagero kills him with her Kiss of Death, he has already had a contingency of coming back to life in the future - he placed seals on all the girls he used to rape and abuse when they were part of his harem, including Biri, and siphoned off their life force to come back to life. Finally, Kuro, the current Raikage and his brother, beats him and gives him a Fate Worse than Death using a seal to make his body intangible so he sinks to the center of the planet. Completely. Deserved.
Iggins, the Big Bad of the second story in the Invader ZimMy Hostage Not Yours trilogy. He's pretty mild compared to others on this list, but his vendetta against Gaz — which starts with sending assassins after her and her loved ones and escalates to using a Mind-Control Device to make her his slave (with some disturbing subtext to his intentions for her) — is all a result of Gaz taking his Game Slave 2 when they were kids. And he stole it from her in the first place. Oh, and when Dib and Zim attack his lair to free her, he first uses his own younger siblings as bodyguards, and when Zim gets past them, forces him to fight Gaz — which, seeing as Zim and Gaz are in a relationship by this point, adds a whole extra layer of Kick the Dog to that action. When Gaz breaks free of the mind control and proceeds to beat Iggins within an inch of his life, which renders him catatonic and promptly locked away in a mental institute, it is very satisfying to read.
The Big Bad of Poké Wars, Ho-oh, starts off as a Well-Intentioned Extremist wanting to make a utopia for Pokemon by focusing only on humans and trying to limit collateral damage. He soon starts engaging in things like killing Pokemon who don't agree with him and destroying the environment.
Winter War gives us an Aizeneven worse than in canon. How, you ask? He Hollowfies and merges captured Shinigami with their Zanpakutos so that they serve him as Tortured Abominations (after torturing them), afixing members of the 4th Division with exploding collars, and more! The worst part? The above are examples of Pragmatic Villainy. The whole letting the balance of souls slip and risking letting the worlds be annhialated? Not so much, unfortunately, for all the normal souls being eaten by Hollows. Then we meet his subordinates.
My Little Pony Friendship Is Magic has many irredeemably evil characters in fanfiction, but in Pattycakes, Fluttershy, OF ALLPONIES, became one... Fluttershy, who has an infantalism fetish and takes it out on Rainbow Dash. She holds her prisoner, and the end result is that Fluttershy brainwashes Rainbow Dash into an incontinent Adult Child. Part 2, it gets worse. Scootaloo attempts to find Rainbow Dash, who has gone missing. She winds up falling headfirst into Fluttershy's twisted little nursery, where she forced to perform demeaning tasks. Not only that, but Fluttershy has developed a serum she calls "Foalmula". Terrible pun aside, it's a drug that is completely undetectable and REVERTS THE DRINKER'S MIND INTO A PERMANENT INFANT. To make matters worse, Scootaloo has to expose her idol Rainbow Dash to it. Then, in the conclusion, you get a lovely little two way decision. Scootaloo is presented with two drinks, a glass of water and a bottle of milk, and must drink one. You decide which Scootaloo drinks, choose the glass of water and her mind is destroyed. Choose the bottle of milk, and Scootaloo becomes Fluttershy's disciple and helps Fluttershy drug the rest of Ponyville with Foalmula. And if you chose the "correct" drink, the story ends with a parody of "Want You Gone". It's sung from Fluttershy's perspective, to Rainbow Dash, about how, now that her mind and personality are gone, RD will be a nice, innocent foal and never hurt anyone's feelings again.
While we're on the My Little Pony Friendship Is Magic subject...Chwe Goleadau, the sequel to Arddun Lleuad, has "The Enemy", aka Schaden, a thing without remorse and with only one feeling: a craving to learn about pain. How does it intend to go about this? Three words: World of Pain. Which is to say, reducing every single living being in Equestria to nothing but an eternally tormented, howling, horribly conscious biomass. And then it decides to up its apocalypse class from Planetary to Multiversal. In the light of this, minor things such as torturing and disfiguring the protagonist, or using illusions and mind control to make everyone hate him, are but a cherry at the top of the cake.
The CSI: Crime Scene Investigation fanfiction Face The Music by Elm22 has two of them. Reuben Shelling is the primary one, but the other guy, Denaglio, borderlines it as well. They kidnap Grissom by first kidnapping Greg and telling Grissom, prompting him to give himself up to keep them from harming his young friend. The guys brutally torture Grissom, beating him, using a bullwhip on him, and tormenting him with roach clips in his skin. They also repeatedly rape Grissom and force him to perform on them. He's finally rescued, but left traumatized and terrified,with awful PTSD and all the typical after effects of this type of abuse. Sadly, that isn't the end. Denaglio is shot during the first rescue, but Shelling gets both Grissom and Sara again, capturing Sara and using her as bait for Grissom, and tortures both of them, first targeting Sara to torment Gil. He then turns on Grissom after Grissom tries to protect her by begging him to leave Sara alone and torture him instead. Shelling was driven by Grissom sending his brother to jail, and both villains have dark, abusive pasts, but between Shelling's past history with abuse of women and the horrors they inflict on Grissom...*shiver*. And this fic is *very* well-researched in regards to the after effects of such abuse and very well written; the author is very talented, which makes it all the more haunting to read.
The same author also wrote a kidnap fic called Thirty Minutes And Counting where Gil is kidnapped by Office Fromansky, a character from a fifth season episode. Try reading about Gil's feet getting numerous nails driven through them, plus the other abuse he took, and not getting sad for him.
The Tracker fic "In Sheep's Clothing" had a complete monster Cirronian, an anomaly in a normally gentle species. He kidnapped and tortured Mel until Cole got to them. There was skin carving and dry ice burning involved. It prompted the normally fairly nonviolent Cole, a Cirronian himself, to pound the villain until Mel coaxed him not to sink to the guy's level and just collect him already.
The fake Gennai from the Tamers Forever Series. What he does to Mimi is quite possibly the most disturbing act of callousness in the entire franchise (canon included).
Daemon definitely counts as well. There is nothing he cares about more than inflicting as much suffering as possible, and he is perfectly willing to slaughter thousands, including a seven year old girl, in order to get what he wants.
The Nightmare is another example, an Ax Crazy, digital Humanoid Abomination that delights in causing pain to others so that it can enjoy their reactions. Takato even says that it's worse than D-Reaper
Jeromy: Hurting him? I was just doing my job, exterminating pests. You dingoes are so pesky, you make the funniest sounds when you're terrified or injured. Shifty was a pretty fun toy to play with, it's a shame I broke him. Whoopsie!
Not even Lucky Star fanfics are safe from this. In The Day Everything Changed, a minor example of this is Sakura Takahashi, the school bully and an all around Jerkass. The 19 year old second year student at Ryoyou High School (she was held back twice) has beaten up every girl in the school. But for some reason, she holds a particularly strong grudge towards Kagami (who is oblivious to this fact). And towards the middle of the story, she shows this by attacking her with a metal pipe and a pocket knife, for no other reason other than For the Evulz. But Sakura really shows she is a Complete Monster sometime during the attack, when she laughs at Kagami, who by now is on the ground, crying and pleading for her to stop, making it clear that she is enjoying her victim's suffering. To top it all off, she boasts to her victim that no one can save her now. Luckily, this is what throws a now infuriated Konatawho has a major crush on Kagamiand who had seen this occur over the edge, as she then starts beating the shit out of Sakura. Despite the fact that Sakura manages to injure Konata during the struggle, the latter still manages to win the battle. Unfortunately, Kagami is badly injured in this attack and she is rushed to the hospital, but is expected to make a full recovery. Sakura is immediately arrested and placed into police custody, but not before some of the students try to get at her.
Brynn from the Battle Royale fan fic, 72Hours. She orders the Brat Pack to assault Lenore, Damien's girlfriend, and shaves her bald. Later, during the prom, when Damien went to give Lenore her corsage, Brynn replaced the flower with a lock of her hair, convincing Lenore that Damien was behind the attack. This not only causes her to break up with Damien, but also drives him to play the program and become the deranged Carrie-Gollum-Jason combo he becomes, with his first targets being the Brat Pack.
The Hannah Montana sequel story 'I Didn't Sign Up For This' gives us Cheryl/Drew. She is introduced as a seemingly normal college freshman that befriends Miley at Stanford until is revealed in the final chapter that she was the one who orchestrated the explosion that killed Oliver and 8 other people just because they advanced farther than her on American Idol. She is given a somewhat sympathetic backstory in that her father was killed in a car crash, until she reveals she gave him a drug that would give him a heart attack so she could pay for her college. She even kills her minions when she no longer needs them, including her dragon, Professor King, who she was revealed to be cheating on Lilly with throughout the whole story.
Another monster is Martin (pronounced Mar-teen). He kills his brother in the same explosion because he was The Unfavorite and then vandalizes the Music Tech room for no reason and mocks his dead brother on Facebook.
Although, in an odd example, both of the aforementioned factions are long, long dead by the time the story begins.
The Vasari are this, in-universe, from the viewpoint of the Traders.
In a Phineas and FerbDark Fic, Isabella Garcia-Shapiro becomes this in Snapped, when she tortures Ferb, and cuts his organs out, and kidnaps Buford and ties him up, so that she can blame him for Ferb's murder and her being beaten up. This was done so that she could have Phineas to herself.
In Paul Robinson's The Locust, the character creates a mind control device, finds a businessman, then uses his device to get the businessman to borrow several million dollars and take out $200,000 in cash. While they're waiting, the man's beautiful 15-year-old daughter comes home from school. The character takes her upstairs and convinces her she's in love with him. Then he has sex with her. When the cash arrives, the character takes it and the businessman's wife and daughter with him and tells the businessman to wait for a phone call. The character uses his device to convince them to leave, then takes the wife and daughter to a hotel suite (which the wife charges to the businessman's credit card), calls the businessman, and starts having sex with his daughter again while the businessman has to listen to it. As he's about to climax, the character gives the special command over the phone that causes the buisnessman to believe life is worthless and he wants to die and puts a gun to his head and shoots himself. The gun goes off over the phone at the exact moment the character climaxes. Then later, he collects the assets from the family and pimps out the mother and daughter as well as lots of underage girls.
Yet another My Little Pony Friendship Is Magic fanfic example — Nightmare, the Big Bad of Night Of The Shy. Being an Eldritch Abomination, she should be Above Good and Evil. However, the sheer amount of enjoyment she gets out of her actions (which are usually Kick the Dogat best and which tend to be done purely For the Evulz) puts her straight into this territory. To sum up: not only did she possess Princess Luna (turning her into Nightmare Moon) and create Discord (making her responsible for everything he did as well), she's also implied to be behind several of the monster attacks on Ponyville in canon and is the reason Celestia and Luna are the last two alicorns. And all that's before the story even starts; in the story itself, she kidnaps the Mane Cast's pets as bait for Fluttershy, who she then takes as her new host body (trapping the poor filly in her own mind), before brainwashing and transforming the aforementioned pets into monsters as part of her army. When she realizes that Zecora followed Fluttershy and witnessed the possession, she has her minions hunt her down to stop her from telling anyone — and after she's captured Zecora, she tortures her before releasing her to hunted again for fun. She then launches an attack on Ponyville that claims the lives of Princess Celestia, Ditzy Doo, Rainbow Dash, and Princess Luna, with her personally killing the latter two. And after the rest of the Mane Cast have been forced to flee, Nightmare proceeds to eat most of Ponyville, before locking the survivors in a cage made from the bones of her victims and leaving them to die as she sets the town on fire...except Sweetie Bell, who Nightmare takes prisoner to use as a hostage/bargaining chip against Rarity and the others.
The kicker? All of the above happens within the first five chapters of the story!
Dark Specter. The first story is primarily concerned with his rise to power, and we get to see exactly why he earned the title "Grand Monarch of Evil". While having innumerable wars and genocides behind him in his quest for Dimension Lord-dom is bad enough, it's the sheer overkill he applies to our own humble blue marble, it being prophesied to birth his destroyers, that truly pushes him into this territory. Two instances in particular stand out. In the second story, he's been revived and took the galaxy's government, but he's heard that Zordon is also on his way back to the realm of the living. Specter kidnaps all the various babies he thinks might be the reincarnated Zordon, as well as Karone, to confirm their identity. When Karone tells him that none of the babies he has are Zordon, Specter blows up the room full of babies, then teleports Karone back to the Rangers...with her throat cut. Karone gets better, but we're never told if the babies do. The second instance is in a flashback in the third story, where it's revealed that Specter sold advanced alien tech to the Nazis in exchange for them turning Earth over to him when they were done conquering it. They failed to do that, but one can only imagine how much worse he made World War II. He's also behind everyone else on this list, by the way. Interestingly enough, the early parts of the first story give him a bit of a Woobie-ishBackstory that casts him as a former Ranger millions of years ago who accepted the proto-United Alliance of Evil's offer to become their leader so he could get justice for his murdered girlfriend, but the author has gone on record as saying he's grown unhappy with this backstory and plans to write it out next time he revises the fic.
Most of the Dominus Lords qualify, too. The twelve wealthiest people in the world, they've spent their entire lives subverting the government and business communities of Earth for the UAE so they can take it over more easily. Their ancestors have been doing this for hundreds of generations, going back 10,000 years, as it turns out, too. They're also fond of assassinations, unethical business dealings, and boundless decadence. Two rise above the rest: Gregory Roschin, the Big Bad of the group (actually described as "The Devil himself" by another character), turns out to be, among other things, the person who hired Mirloc to kill Sky's father, and Mr. Stonefeld, who, as a message to get the Rangers to back off from the UAE's business, has a hit put out on their families, and we get to watch (well, read) actual characters from the show die horribly. Also, ever wonder why Norg was the only yeti we see? Yeah, these guys are why. They're apparently based on real people, but good luck finding a list of crimes as long on even the most coldhearted Real LifeCorrupt Corporate Executive.
Which brings us to King Ra. He's the absolute dictator of a race of Lizard People and a high-ranking member of the UAE. He claims to have genetically engineered humanity to be his race's slaves and wholeheartedly believes this gives him every right to abuse them in any way he wants, and does he ever. As it turns out, he's lying through his teeth, but it's then revealed that he's responsible for the Dominus Lords' control of Earth, so he still believes humanity "owes him". Naturally, few tears are shed when the Rangers cut him down, with him whining about how "ungrateful" humans are all the while.
This next one is a big spoiler. It's Captain Logan, the apparent Big Good from Time Force. How bad is he? Well, it turns out that Year 3000's mutant crime wave problem was actually engineered by him, as a way to unite the people against a common foe and distract them from the dictatorship they're living under. Oh, and he shot Ransik's wife on the day their daughter was born, which drove Ransik back to crime just as he was about to completely atone from killing Dr. Fericks due to The Power of Love. He's also a nigh-unkillable Super Soldier. You can't help but cheer when Ransik jams a vial of liquid magnetite (the Super Soldiers' one weakness) down his throat, causing him to crumble to dust in an extraordinarliy painful-sounding way.
Then there's Senator John Thorne, leader of an anti-alien hate group. We realize he's this right around the time he has a refugee camp massacred. Most of his private army, used to perform the aforementioned massacre among other things, appear to qualify, too, but as they're just Mooks, it's hard to tell.
There's also Jacob Russell, an Amoral Attorney-turned-Corrupt Corporate Executive. He bought out one of BioLabs' subsidiary companies and turned it to evil. Not only that, he murdered Trini's Uncle Howard (a character fans of the show would recognize) when he wouldn't sell his research to him, making the death look like a suicide. It's even sort of hinted he greased the authorities' palms so they wouldn't consider the fact that Howard had never displayed suicidal tendencies before.
Finally, let's give a nod to the small army of Corrupt Corporate Executives, Sleazy Politicians, Amoral Attorneys, crime bosses, drug kingpins, and various other powerful human villains who helped along or at least looked the other way toward the UAE's attempts to conquer Earth. They're all incredibly minor characters, most of whom don't even get names, but selling out your entire planet in order to fatten your wallet is about as despicable as it gets.
From Canzet Yote, the same guy who created Jeromy in Scars Are Forever gives us GavinBuildmore from The Adventures Of Blinky Bill fanfic Ashes To Dust. He's a Corrupt Corporate Executive crocodile who is Slick Possum's abusive boss. When Slick was 5, Buildmore tortured him by sticking a rose in his mouth and yanking it out repeatedly, and on Slick's 6th birthday, Buildmore beat his mother to an inch of her life with a lead pipe. He then forced Slick Possum into child labor and repeatedly beat him with chains and choked him. One time, when Slick was a teenager, Buildmore crushed an innocent duckling to death in front of him and mocked him for crying about it. He also brags about how he stole Slick's mothers life insurance money to buy a yacht, and once he found out Slick was gay, he mocked his sexuality by raping him repeatedly. And that's only his backstory. When he arrives in the actual fic, he implodes the theater while protestors are still inside, killing innocent men, women, and children just so he could build a brand new theater. He then kidnaps Marcia and tortures her to death with dry ice, and when Slick, Shifty, and Nutsy go to rescue her, he captures Shifty Dingo and threatens to rape him while holding a garden shears to his throat and fondles Shifty's genitals. At one point, he lets Shifty and Nutsy escape the mansion, only to try and chase them down in a helicopter, and he actually manages to shoot Shifty in the leg and laughs about it. He also orders his goanna minions to gangrape Slick Possum. Oh yeah, and he sells his own daughter into sex slavery. The worst part about all this? He gets off scot-free!
First is Nihilus, Twilight Sparkle's Superpowered Evil Side. She Mind Rapes Rainbow Dash in order to turn her into her willing slave, as well as torturing and humiliating her in order to help the Insanity break her down. And this is in addition to hunting down Luna and the rest of the Mane Six, tormenting and killing anypony in her way, all while Twilight is forced to watch — and she positively delights in this fact, taking joy from Twilight's suffering.
Titan and Terra. For all their talk of being the rightful rulers of Equestria, they show little to no concern for their subjects (with Titan constantly threatening to destroy Equestria if the ponies don't stop resisting his rule). And for specific examples for each, Titan has no problem with killing his own son after he's depowered, and Terra actually seems to greatly enjoytorturing one daughter and trying to kill the other.
Terra eventually gets a Cry For The Devil treatment that makes her more of a Jerkass Woobie, while at the same time makes Titan an even bigger monster. To sum up, Terra was originally married to her brother Empyrean (not to be confused with the son Titan killed), but had to Mercy Kill him after he was corrupted by Discord; Titan blamed Harmony (his first wife/Terra's mother) for this and killed her, before forcing Terra — his daughter, if you haven't been keeping track — to become his new wife, subjecting her to the Insanity to make her as big a monster as him.
Arguably, the worst of all is Rarity's father, General Esteem. Whereas Nihilus was created by an Artifact of Doom to be a creature of pure evil, and Titan and Terra are gods who are technically above normal morality (with Titan himself bordering on being an Eldritch Abomination), Esteem is just a sadistic asshole who's so in love with the concept of war that he raises his daughter via brutal Training from Hell, kills his wife when she refuses to help him unseal Titan, and, upon Titan's release, does whatever he can to crush any resistance. Which includes driving the Sliver of Darkness through Twilight's eye to create Nihilus — while knowing she'll be awake during everything after — and brutally killing anypony who opposes the new regime. To put it in Applejack's blunt terms, he's a jackass, and his Karmic Death at Twilight's hooves, right after confessing to killing and eating Spike*
though this turns out to be a final spiteful lie
, seems like too easy an out for him.
The fanfic Better Off Alone has Beldam. Not only does she pick on and abuse Vivian for every little thing that goes wrong and give Vivian mental damage in the form of low confidence and self-esteem, but then she plans to take over the world and kill Vivian and her friends. She makes Vivian believe that her friends were just using her! When confronted about it, she simply says, "You say that as if it's a bad thing." Yikes!
The fanfic Fortitude gives us Ashton...Ashton plans to force Zelda to marry him and also plans on "breaking" her! He stops at nothing to try and kill Link, he never cares about anyone, and he even has Heather whipped because Zelda ran away for three days!!! That, ladies and gents, is most definitely his Moral Event Horizon!
Hazel Lulamoon from Part 3 of The Greatest Gift. She was an Abusive Parent to Trixie and was so terrible that the corresponding Ask A Pony blog reveals that all it took was the threat of becoming Celestia's student as a result of defeating Twilight (her dream at that time) being like living with her to break Trixie's spirit. When she finally shows up in the fic, she has Trixie ponynapped by a hitman, along with some other poor male unicorn, just to force Trixie to have a foal with him to continue her family line (as Trixie had married Twilight) and considered having Twilight killed, only not going through with it because the hitman refuses. After that, she goes even further over the Moral Event Horizon by trying to trick Trixie into drinking apple-juice spiked with something to abort her and Twilight's magically conceived, unborn foal! All because it was born to a couple of "filly foolers". Then try to murder Trixie, stating she'll just have another daughter to continue her line Even Word Of God calls her a Complete Monster! Seeing Trixie kick her flank and Hazel having her horn cracked (preventing her from ever using magic again) losing the Beam-O-War capping it off was very satisfying. Ironically, walking out of Trixie's life (and that of her and Twilight's unborn child) after said asskicking, while no doubt meant by her to be one final insult, is most likely the best, and probably only good, thing she's ever done for her daughter.
Brass Hoof, from chapter 2 of Derpy's Album. Even though he is in it only for a little bit, he beat up Sparkler, Sparkler's pregnant teacher Mrs. Hazel, then killed her by mistake, but doesn't care, and shot Derpy, causing her eyes to derp. He even says he likes beating up other ponies just for the reaction. Don't worry, he got what he deserved.
The Big Bad of Ace Combat: The Equestrian War, Red Cyclone. He's a cunning and charismatic talker and one of the two griffins responsible for starting the entire conflict. He sees the ponies as wimps and wouldn't like to think of them as anything else other than an extinct race. When he reveals his Evil Plan to General Silverbeak, his concept is rejected. What does Red Cyclone do? He kills the general and blames it on the ponies, sending the griffins to burn Equestria down and exterminate or enslave all ponies! And he does it all because he thinks the world doesn't need the weak.
The unnamed scientist from the Pokémon fanfic Experimenting Fear. He kidnaps Nando and forces him to deal with his worst fear, abusing him, humiliating him and threatening to put him through worse torture if he doesn't comply ("I doubt you'd like to know what it feels being violated with a pipe, or having to swallow glass soaked in lemon and salt?"). What does he do, exactly? Nando is afraid of losing his hearing because of his love for music, so the scientist tortures him with high pitched sound frequencies, then deafens him with the sound of a gunshot. And it's mentioned that he's made other people confront their fears in a similar fashion — most of his victims are found dead or driven insane. And as a final insult, he gets off with zero punishment. The kicker is that in the timeline of this story, Nando is still a young child!
