Unami, who gets killed by Team Summer A when they awaken in the future. Unami was one of the teachers in their facility and he was physically and verbally abusive, misogynistic and, like the other teachers, set up a "test" to see if they would be lured into multiple death traps and simply watching from afar how students died. Nobody cares that this person died, most people likely even cheered when he died alone.
Ukai from the Team Summer A candidates counts as one, too. He's quickly introduced as an arrogant, rather confrontational guy and he considers himself Ango's rival, though it's not mutual. Ukai decides to kill Ango during the Final Test because he is constantly in his way, as well as Ryo, and the final drop was Ango refusing to share supplies when the test began. Ukai ends up getting one of his eyes slashed out by a bear's claws and it begins to drive him insane. Eventually, Ukai dies by freezing to death but only after he has taken advantage of Shigeru's good nature and makes him call Ango out, lures Ango into a trap and pushes him into a deep cave in the hopes that he'll either die on impact or starve since he cannot come out and also ends up shooting and injuring Shigeru. Once again, you probably didn't shed a tear for this guy.
Yanagi, the guide of Team Spring. And he's even the first death in the series! Yanagi was a misogynistic jerk who thought women need to be submissive and do as men tell them to, even going so far to try to rape Hana in order to knock her down a few pegs. Yanagi was also willing to throw Hibari to some large, hungry insects so the rest of them could flee! While he ultimately decided to burn himself to let the team escape from the insects' nest, he is not one to feel too sorry for... though he does gain the pluspoints of sacrificing himself to help others and for the fact that, despite him being a jerk, he really shouldn't have had to become the breeding grounds of insects.
Seiji Noumi's Start of Darkness involves betraying his Big Brother Bully Yuichi, who'd exploited him for points since serving as his "parent" on Brain Burst, and then killing his Duel Avatar repeatedly in horrific manners until he lost all his points and Brain Burst. It's hard to feel sorry for Yuichi, even if Seiji ends up being no better than him.
The PKers, which, in this series, means "Player Knockers," are considered the worst scum on Brain Bust, since they repeatedly target players for points until they lose them all, and even target people in the real world. As such, it's cathartic as well as horrific when Sky Raker throws one such individual into an area where he will repeatedly be killed by an enemy, or when Cyan Pile, under the influence of the ISS kit slaughters the members of the PKer guild Supernova Remnant, forcing them off Brain Burst.
In the Ace Attorney manga, Robin Wolfe. He essentially drove Eddie Johnson to suicide by restraining him in a chair in a room full of spiders, presumably knowing that he was arachnophobic. This was presumably because Eddie was disrespectful at work, but it may have been motivated merely because he didn't approve of Eddie dating his daughter Lira. Afterward, he laughed about it while telling his wife what he had done, and claimed that Eddie was "weak" for committing suicide. As a result, his wife and daughter hate him, and he also hates his reclusive spider fanatic brother Bobby, thinking of him as an eyesore, keeping him restrained and denying his existence while guests are visiting. As a result, Brock comes off as a Sympathetic Murderer. Lira still calls Brock out on it, though; no matter how much she may have hated Robin, he was still her father, and she still grieves for him.
Also from the Investigations manga, Marco Swindell, a con artist who takes advantage of a kindly clinic doctor to bilk money out of the clinic, before being killed by one of the doctor's patients.
Akame ga Kill!: Pretty much all of Night Raid's targets are the most despicable, Obviously Evil human beings with no sympathetic qualities whatsoever. By slaughtering these monstrous people who abuse their power, Night Raid slowly tears down the corrupt empire oppressing the once peaceful capital.
At least one of the delinquents who ridiculed Armin in the first chapter is killed by debris during the Wall breach.
A story arc shows Mikasa's childhood. When she was a child, her parents were brutally murdered, and she had to watch everything. Then she was kidnapped and the kidnappers wanted to sell her as a sex slave. But Eren had decided to help her and killed the kidnappers.
In Grisha Yeager's backstory, there's Sergeant Major Gross of Marley. After catching Grisha and his 8 year old sister, Faye, trying to leave their designated ghetto just to see the airships, he beats up Grisha and feeds Faye to his dogs. Years later, he participates in turning rebellious Eldians into Titans while releasing one man to be chased and ultimately devoured by his former comrades, just for the sheer fun of it. He gets absolutely no sympathy when Eren Krueger kicks him down a wall to be eaten by a Titan.
Griez spends much of his limited panel time badmouthing the recently deceased Sasha as a "whore" and a "tramp" in front of the man who loved her, and referring to her as a "daughter of devils." No one feels very bad for him when Yelena blows his brains out.
Taken Up to Eleven with the second victim, an old woman. When we first see her, she's mocking and ridiculing the lead character's mother for daring to not have a husband. (It's implied very shortly after that she was previously married and her husband died, or at least ran out on her) Next, we see her berating a neighbor for roof tiles falling into her yard during an earthquake — then further insulting them for daring to suggest they could clean up the tiles to make it up to her. Next, when she first sees a Bio Meat, she mistakes it for a pig, and calls Animal Control... and when they turn out to be taking too long, she decides to try to stab it to death with a broom handle for no reason. She gets picked off shortly thereafter, but she's still not done being an asshole, as she had decided to attack it in front of a little girl, who gets so traumatized by witnessing what happens to the woman that all she can do when the Animal Control officers finally arrive is repeat the Madness Mantra "Little piggy dragged off the big lady..."
BioMeat even includes Troper Namers, listed in the credits as "Asshole Victims" in the fifth volume. This is a group of the main characters' fellow middle school students who are saved from being eaten when Bio Meats swarm the school by the quick thinking and leadership skills of one main character, and then given an avenue of escape and communication with the outside world by the inventiveness of another, though said escape route has to be used sparingly and carefully lest the Bio Meats use it to invade the safe room. Just as the last of the main characters leaves through the escape route to bring back help, the "Asshole Victims:"
Cut the only rope that allows them to enter and leave the safe room, for no other reason than to amuse themselves by watching the last of the main characters plummet loudly to the ground and alert the nearby Bio Meats to his presence.
Sneeringly (and loudly) voice disappointment when the last main character escapes being eaten due to a previously unnoticed weakness in the Bio Meats.
Make a "You're Not The Boss Of Me" speech as the escaped main characters are yelling for them to close the entrance to the safe room because all the insults the "Asshole Victims" have been yelling have alerted the Bio Meats, which are now rushing toward the entrance.
Continue ignoring the Bio Meats even as they're climbing into the no-longer-safe room, just to yell a few more accusations at the main characters of being responsible for their deaths by creating the escape route that they misused.
The Weston College Arc has a strange example with Derrick Arden. He's been missing and Sebastian and Ciel only hear the greatest praise of him during their investigation. Derrick was The Ace of the school: he wrote amazing stories, had the best grades, an incredibly kind personality and was a star when it came to sports. Then the truth rolls around when his killers admit that they found Derrick abusing other students, bullying them out of fun and forcing them to do his homework, while relishing in his disgusting behavior. And one of the teachers was supplied with alcohol, meaning Derrick would never face consequences.
Baron Kelvin during the Noah's Circus Arc. This man became obsessed with beauty and infatuated with Ciel since he first saw the little kid, to the point of submitting himself to plastic surgery over and over again to become beautiful enough to be near him. But he also took in orphans off the streets and gave them shelter, food and a good life. He also forced the first ranked members of the Circus to travel to cities and kidnap children, to give them to him for horrible, ritualistic torture and getting them killed during 'circus acts' as a form of entertainment. And the ritualistic torture was all so he could recreate the torture room that Ciel was caught in and redo those events. Ciel shoots him in a moment of distress and Sebastian stomps his head in. And then you learn that the circus members only agreed to kidnap children because Kelvin would otherwise cease funding a workhouse where other orphans were living well. And it turns out that the workhouse is an abandoned ruin and those kids have probably been dead for a long time.
During the same Arc, the doc. He's a paraplegic and makes prosthetics that are used by the circus members, who lack a limb from birth. It turns out he's in cahoots with Baron Kelvin on the business of kidnapping children, but utterly detests the Baron himself. The doc takes the corpses of the children, or sometimes kills them himself, to make the prosthetics out of their bones because they are of amazing quality. He's also not a paraplegic.
Chaka from Black Lagoon. An asshole Yakuza punk who kidnapped Yukio Washimine and put her through hell, and then proved to be a Dirty Coward when Revy and Yukio's guardian Ginji Matsuzaki attacked his bowling alley. His death was horrible, involving losing his gun and his hands to Ginji's shirasaya blade before being thrown into a pool to drown, but he was a complete and utter bastard who deserved every second. He is the only major villain in the series to not be sympathetic in any way at all.
In Farewell To The Eyewitness, there's the perverted teacher Takashi Murakami. He picked up Ryouko's dropped train-pass and used it as the premise, to blackmail and attempt to rape her. The fact that, according to rumors, he's done this before to other students in previous schools, makes nobody give a damn that this guy is dead.
In Suicide Room Number 404, there's Mari and her boyfriend Tooru. Mari faked her suicide and proceeded to emotionally torture her friend over it, finally getting her boyfriend to agree to kill Eriko, by making it look like a suicide, too. All so that Mari can get Eriko's life insurance. That Tooru helped and even made use of Eriko's unrequited feelings for him to make her compliant makes both of them look worse.
In When The Bell Rings 5 Times, any of the four guys who grabbed poor Yoshie and tried to gang-rape and ended up killing her.
In Claymore there is a group of robbers. First, they want to rape the warrioress Teresa of the Faint Smile, but they decide not to do this when they see that her body is only half human. Shortly after, they attack a remote village in the mountains, killing most or all of the men there. The women, on the other hand, they plan to sell into slavery. When Teresa returns to the village, she sees that the robbers are having way too much fun doing their horrible deeds, and one of them has even mistreated Clare, the little girl she'd encountered earlier. This is enough to drive Teresa to break the rule of never killing humans that Claymores are supposed to abide by, and the robbers pay the ultimate price.
A whole bunch of people marked a villain in Code Geass:
Clovis is a deconstructed one as even though he deserved to killed for murdering Elevens to cover his mistakes, much of his family and even Lelouch misses him.
The High Eunuchs live in luxury while the rest of their land lives in poverty, and think nothing of mistreating the masses. They manipulate the child Empress and attempt to kill and replace her for political gain. And then, they turn on their top commander, Li Xingke, after signing a treaty to sell all of China to Britannia. Eventually, they get their forces easily wiped out, have their whole political scheme exposed, completely lose their eligibility for Britannian noble title (as even Schneizel doesnt think highly of them), and are left to be killed by the man they just betrayed.
Fianlly, theres the Britannian Royal Family itself, save for Lelouch, Nunnally, Euphemia, Cornelia, and Schneizel. The rest are mostly overprivileged parasites who use their power and philosophy as an excuse to step on whoever they want. When Schneizel launch his Damocles plan, his first step was simply to wipe them off the map.
D.Gray-Man is a Crapsack World where good people tend to die, so when the ones that get murdered have proven themselves to be assholes, it feels extremely satisfying. One example is the village in a filler episode of the anime who would single out a person as a scapegoat witch and banish them to a run down shack and refuse them any supplies. The entire village who followed this tradition was gorily wiped out when the last witch's twin sister became an Akuma to avenge her death by illness that the villagers refused to help cure even though they could have. Even Kanda's seeker refuses to show remorse for them.
In Date A Live, Kurumi Tokisaki kills three thugs that try to rape her, then three guys who were tormenting a cat with airsoft guns.
Occurs often in Death Note, although the victim is often only inferred to have been an asshole by virtue of having been in prison. In fact, that's part of the point - Light Yagami claims that he researches these people to make sure that they really 'deserve' to die before he offs them and that he spares the criminal if the person they committed the crime against was an asshole victim. How reliably he does this is questionable at best.
In Chapter 2, L mentions that his first suspected victim, Kurou Otoharada's crime was the least serious (not including Shibutaku, who L has no reason to know about, since he isn't aware that the Death Note can kill by means other than heart attacks). Otoharada is the guy who was holding a group of pre-schoolers at gunpoint at the moment Light killed him.
On the other hand, he kills several law enforcement officers pursuing him, and also intends to kill people who don't contribute to society enough (although it's unclear what criteria he uses or what his standards are; when Teru Mikami starts killing people for being lazy and disrespectful, Light doesn't approve, as he thinks it's "too early" to be doing such things, and he's even more upset when Mikami begins targeting minor and reformed criminals).
This trope is played absolutely straight at least once, without any debate in universe. When Teru Mikami offs Hitoshi Demegawa, even the Kira Task Force didn't hold it against Kira, even mentioning that if anyone deserved getting killed off by Kira, it was him.
Kyosuke Higuchi. He's the only one who has no motive or attempt at justification whatsoever, he's just a mass murderer. When he was arrested, Light kills him off to regain control of the note book, making him the only Death Note user whose death has no aspect of Alas, Poor Villain whatsoever.
In the pilot, Taro Kagami picks up the Death Note, and while writing in it, accidentally kills some of the bullies who had tormented him.
Takua Shibuimaru in the anime and especially in the film. Averted in the manga, however. His death seemed a little too harsh (even Light thinks that he didn't deserve to die). All he was just doing was flirting with a woman, but doesn't do any outright criminal activity towards her.
Delicious in Dungeon has the corpse hunters who stalk Team Kabru and attempt to murder them when they try to leave the dungeon. Kabru rejects the leader's offer of letting his party claim the reward for retreiving the corpses of two members of the hunters' team (who were still alive by the way, just unconscious) and instead stabs him in the throat. They kill the rest of the hunters and dump their bodies in a lake where they'll likely become fish food and so be much harder to revive.
Played with in another episode: the victim hadn't just done something wrong previously, he was currently stalking the victim (and getting away with it by being rich) and she suspected he was going to kill her. And she was right—the contents of his bag made it clear that, right before he died, he was planning to kidnap and torture her to death. However, since she didn't see this evidence, instead basing her actions on an assumption, it still didn't qualify as self-defense.
Giran from the original series, who was murdered by Tambourine after terrorizing an animal village and stealing food. He was eventually revived by the Dragon Balls, which implied he had some redeeming qualities despite being a total jerkass. To his credit, he did get kinder after he lost to Goku at the tournament and showed Goku respect. He even helped Nam with his village's water problem in the filler episode and he seems to care for his own people.
General Blue is given a horrific death by Tao Pai-Pai by getting a tongue straight to the temple. Blue had gotten close to killing Krillin in the pirate cave, had a soldier executed for picking his nose, and even had shades of pedophilia in the Japanese anime when visiting Penguin Village.
Commander Red. Despite being shot in cold blood by his assistant Adjutant Black over the exact purpose of gathering the Dragon Balls (for him to become taller), he still ran what is described as the most powerful military force on the planet, and was apparently easily capable of taking over the world if he weren't so concerned about his height.
Tambourine. He killed Krillin and several other innocent people for fun, and even bragged about his murder of Krillin to Goku's face. He more than had it coming when Goku killed him in the rematch.
Dodoria. Hes just as sadistic as Frieza, taking complete delight in killing and tormenting others, and took delight in killing Bardocks team. No one misses him when Vegeta blows him up.
Android 20, aka Dr. Gero, was killed by his creations Androids 17 and 18 after being backed into a corner and activating them. Among other acts, Gero had kidnapped 17 and 18 when they were still human teenagers, had a vendetta against Goku to destroy the world after he defeated the Red Ribbon Army, and created the super being Cell who was capable of sucking people into goo with a needle-tail. If one counts Dragon Ball Fighter Z, he also converted his wife into Android 21.
In the anime, Van Zant, a Trigger Happylunatic, and his pal Smitty certainly qualify. They kill numerous people for no reason other than that the world is being destroyed, so they might as well, only for one of them to decide to try and kill Fat Buu because he wants to kill more people. They shoot Hercule and Bee and anger Fat Buu into creating another entity who becomes the new antagonist. The very first thing Evil Buu/Super Buu does is obliterate Van Zant with a Wave-Motion Gun technique, while Smitty gets quite possibly the most brutal death in the series, which involves Super Buu shooting down his throat and causing him to swell up until he explodes.
Paragus qualifies as an Asshole Victim in the ending of Dragon Ball Z: Broly The Legendary Super Saiyan when his son Broly offs him when the latter attempted to escape from the planet. First off, after planting a Slave Crown on Broly's head to control his actions, he ended up using Broly to destroy far more planets than Broly was willing to destroy (and considering the fact that Broly was so Mind Raped from his near-death experiences as a baby as well as driven insane from the Trauma Conga Line he suffered, that he becomes Ax-Crazy enough to try blowing up planets as a kid, that's saying a lot), namely to lure Vegeta, the son of the guy who nearly had Broly and himself executed (and in a way contributing to Broly's insanity) over to be killed by a comet, and then enslaved an alien race that fell victim to Broly and Paragus's actions, and later attempts to abandon Broly to the planet (which was in the direct trajectory path of said comet).
Ditto for Paragus's canon counterpart in Dragon Ball Super: Broly who is even more despicable than his original incarnation having shaped his good-hearted son Broly into a tool of revenge against King Vegeta and actually puts a Shock Collar on his son just to keep him in line. Paragus's causal death at Freiza's hands inspires zero sympathy from everyone (save poor Broly) and comes off as karma pure and simple.
In one of its sequels, Dragon Ball Z: Bio-Broly, Maloja, the shaman and village idiot, has people sacrificed once a year to appease a monster attacking them. When Goten and Trunks kill the monster he is kicked out so he attempts revenge by bringing Broly's blood to Jaguar, thus resulting in an equally powerful clone of Broly. Jaguar and his cousin Men-Men—both of whom have their ownstandards—are saved from the resulting destruction, but Maloja isn't as lucky when the acidic culture fluid enters his room and he speaks his last incantation.
Any character on Earth you can think of not specified to have died already or to be somewhere else is killed either by his Human Extinction Attack or by blowing up the earth. This includes douchebags like Goten and Trunks' first opponents in the junior division, Master Shen, Emperor Pilaf, Vodka the gangster, Mr. Shu, the Red Shark Gang, Colonel Violet, Mr. Musuka (the circus man who kidnapped Chobi), Tao Pai Pai and Captain Ginyu. Granted most of them may not have been considered "evil" enough to remain dead when Dende wishes everyone back except the evil ones - Pilaf certainly falls into that category, as he was brought back to play a role in Dragon Ball Z: Battle of Gods and beyond.
Dragon Ball GT: Eis Shenron, the Three-Star Shadow Dragon. Goku punches a hole through his gut and then obliterates him with the Dragon Fist, and after all of the dirty tricks he pulled during the fight, up to and including using Goku's own granddaughter as a Human Shield, he more than deserved it.
Future Beerus is this, by merely being sleeping all the time. To wit: His laziness and continuous sleeping allowed the murderous future androids to live and kill many Earthlings for years, if not decades. And besides the androids, there are also Future Babidi, Future Dabura, and Goku Black; the latter two ended up killing Future Shin in the manga or anime, respectively, and thus killing the still-sleeping Future Beerus indirectly.
Ro, the Supreme Kai of Universe 9. He is considered one of the most jerkass gods and his future counterpart was strongly implied to have died along with the other Supreme Kais as a part of Goku Black's genocidal rampage to eliminate all opposition from all of the other gods. And then his universe becomes the first to be wiped out.
Frieza's Universe 6 counterpart, Frost, is erased from existence in the Universe Survival Saga when he tries to attack Frieza from the stands after being eliminated by him. Considering that he is a two-faced space pirate who indirectly destroyed or ruined countless lives for the sake of fame and fortune, one could argue it serves him right.
Quitella, the God of Destruction of Universe 4. Both his present and future version. For his future self, if there was any God killed by Goku Black who would have gotten no pity for being a Jerkass God, it was him. Counts for his present version too, he gets erased after his universe is eliminated and deservedly so easily when he threatens to murder everyone else in the Tournament beforehand.
Exaggerated in Durarara!!. At the end of every season (though, only Played for Laughs in the first), Izaya is injured in some way. Izaya is behind a great amount of strife for the characters in the series for the hell of it, and has pretty much manipulated everyone from day one. At the end of the first season, Simon gives him a black eye for his antics and the only reaction Izaya gets is being laughed at by Namie. In the second season, he's stabbed by Yodogiri. In the next episode, he's recovering in the hospital and when he tries calling Shinra, he's almost immediately hung up on and the only one who visits him at all is the girl trying to kill him. In the third season finale, he's captured by Kasane Kujiragi and knocked unconscious. His minions don't really care, but Kine still makes him go to the hospital for an exam. In the final six episodes of the series, Izaya tries to kill Shizuo once and for all but, in return for his efforts, he is struck hard enough by a steel beam to hit him into an adjacent building; causing very obvious internal bleeding, nearly hit by several vending machines, gets both his arms broken and is finally shot with a knife. He leaves Ikebukuro for good afterwards, with the cast unaware if he is either alive or dead. He is later confirmed to have PTSD from this encounter, and can no longer walk. When asked about his whereabouts, his sisters have no problem with the idea of him being dead.
Young Lucy from Elfen Lied is bullied by the other children in the orphanage. Finally, it goes so far as they kill her puppy before her eyes. As a result, Lucy's telekinetic powers awaken and she tears the children apart.
Another episode shows Yu Kakuzawa. He stuns the defenseless Nyuu to rape her. But when her other personality, Lucy, wakes up, she decapitates him.
The Killer's brother in ERASED is incredibly abusive to his younger brother, rapes several young girls monthly while ordering his younger brother to keep quite of the incidents by either guarding the shed or manipulate the victim to keep quiet of the incidents. One day, when their mother nearly walks in to his rape attempt, he accidentally kills the victim by choking it to death. Afraid of the consequences, he attempts to frame his younger brother for it but upon realizing, The Killer kills him by hanging him up and make it look like an accident.
Akira in Fasting cruelly rejects Tomoko, mocking her for her weight. He doesn't recognize her after she goes on a starvation diet, and when her hunger finally gets the better of her, the closest thing to eat is his face.
Shinji Matou was already defeated, so it wasn't entirely justified when he was minced (off-screen) by Berserker. He did, however, just try to kill off a school's worth of people, and laughed when one of them managed to beg for help. If you've read Heaven's Feel and know just what he likes to do at home, you know that there really isn't anything he doesn't deserve. And in the Heaven's Feel arc, it bites him right in the ass.
Any time Gilgamesh is shown in pain or not getting his way is satisfying, considering his haughty, stuck up, "I'm grand ruler of everything" attitude.
The prequel has Lord Kayneth Archibald El-Melloi. Though he's an interesting case: while he was a complete jerk certainly deserving of a Karmic Death, the method by which he was killed was so brutal and mean-spirited it's hard not to feel sorry for him. His killer, Kiritsugu, is actually considered to have crossed the Moral Event Horizon In-Universe for doing so, and gets a What the Hell, Hero? speech from his own Servant. Though he justifies it by saying I Did What I Had to Do. As the entirety of Fate/Zero can be considered a deconstruction of edgy Anti-Hero type protagonists like Kiritsugu... things don't end up pretty for him.
It's also made worse by the fact that Kayneth had just chosen to throw away his pride and give up on the Grail War to save the life of the woman he loves... the same woman who tortured him for his command spells while he was helpless and was planning to run off with his servant. His devotion to her is almost enough to make him sympathetic, and he's often considered something of a memetic woobie for it.
Fate/Apocrypha: Celenike, who tried to get Astolfo to kill Sieg, gets decapitated by Mordred, that along with other horrible things Celenike did would easily make her the most unsympathetic member of the Black Faction.
In Fixed Damage, all the victims of Chrome's "Instant Death" Radius truly deserve the fates they endure. They are all heinous, heinous people with no redeeming features whatsoever, except maybe the death of a demon king they killed, but they only did that for fame, glory, and power which they quickly then proceed to abuse, to horrific consequences for whoever has to work under them, or helps them out.
Shou Tucker, who infamously turned his own daughter and her dog into a chimera in one of the most heart-rending and horrible moments in the manga and subjected his wife to the same fate two years prior, really had it coming when Scar killed him, even though he wasn't even a State Alchemist at the time of Amestrian military's genocide of Scar's people. It's a telling sign that he's notably the only character to be sent to Hell rather than Heaven in the manga's "In Memoriam" pages.
The Gold-Toothed Doctor is a human working for the Homunculi who's fully aware that Father plans to absorb the souls of everyone in Amestris and nearly kills Riza Hawkeye to force Roy Mustang to attempt human transmutation. Nobody mourned when Pride impales him because he's of no more use to the Homunculi.
Of particular note, only one episode after his death, it's revealed he forced Roy Mustang to kill Winry's parents, which in turn left Roy so horrified he nearly committed suicide.
Yoki from the 2003 anime is something of a subversion; his last act is leading the military to Scar and harassing the Ishvalan refugees to reveal him, so his death by Lust's hand is not exactly a tragedy. But it does ignite a battle between the two sides, so it's definitely not good either.
In Future Diary, the young girl Ai is lured by her classmates into an old, resettling warehouse. There she is to be raped by three guys. When the young girl enters the warehouse, two of them are holding her, and one rapes her. Shortly thereafter her boyfriend Marco entered. When the rapist sees him, he takes a knife, and wants to kill him with it. But Marco is the better fighter and stabs the rapist with his own knife. Marco was horrified later, but not because he killed the boy, but because he came too late to protect his girlfriend.
In Goddess Creation Systemthe queen is forced to commit suicide after Ping Yang Hou's coup and it's kind of sad, especially since she was his actual sister and seemed to have grudgingly accepted Xiaxi tutoring the prince. However, afterward it's revealed that she had her brother's wife assassinated as well as Mingluan's mother because she didn't like them getting above their station.
Almost all of the people sent to Hell by those seeking revenge in Hell Girl were getting what they deserved... Though there is the occasional episode where the perpetrator is equally culpable, or the string pull is an accident.
Mobile Suit Gundam: The 08th MS Team: When a trio of Zeon mobile suits occupies a guerrilla village, the first one to die is the unsympathetic asshole of the three. There is also Isan Ryer who sent his troops to their deaths in countless battles. With his Big Tray about to be vaporized by the Apsalus III, he states there is no time for evacuation.
The adults who rule over CGS on Mars get their just deserts for constantly mistreating the Child Soldier protagonists after Orga has their food laced with sedatives and has them all tied up and brought to the same room so he can inform them that he's running CGS now. Mika calmly Double Taps two of them — Haeda Gunnel in cold blood when he refuses to acknowledge that he's been disposed, and Sasai Yankus who tries to bum rush them as a result.
Commander Coral is The Neidermeyer and corrupt to the core, making his death about as unmourned as can be.
Jasley looked down on women, helped cause Naze and Amida's deaths out of jealously, killed Lafter to get rid of Tekkadan, tried to usurp the mafia leadership of McMurdo, and had no problem using human debris. He died begging for his life as Mika kills him off.
Likewise, Iok gets many people kills and causes problems for both Tekkadan and the Arainrhod Fleet. Then, he collaborated with Jasley for the incident above. In the end of the series, he gets crushed to death by an enraged Akihiro moments before his death.
Finally, in the finale, theres Nobliss Gordon. After everything from trying to kill Kudelia to turn an independence movement into a violent upheaval for him to profit from to ordering Orgas death while spreading Demonization propaganda of Tekkadan, hes finally shut up when Ride shoots him four times on the toilet.
Mobile Suit Zeta Gundam: Admit itwhen Yazan Gable killed Jamaican Daninghan , you either didn't care at all or cheered.
Mobile Suit Gundam 00: Wang Liu Mei, who gets killed by Nena Trinity, is arguably this after delivering a set of kick the dog moments, from playing both sides to being abusive towards her brother.
Heavy Object: Nyarlathotep trapped Acre Kiss-of-Rose, his former boss, in a barrel and filled it with pebbles and an adhesive, with the latter setting and expanding, squeezing Acre until he died of shock, but the fact that he got many innocent people, including Nyarlathotep's family, killed in the name of greed most certainly makes his death well-deserved.
In Episode 162, Sesshomaru kills several robbers who have just attacked a village.
When Rin was still in her home village, and wanted to steal food for the injured Sesshomaru, several men have caught her, and so badly beaten that she was visibly injured afterwards. Shortly thereafter, this village was attacked by Kogas Wolves, and the humans there were killed. Inuyasha and his friends have never accused Koga of doing so.
Practically every single antagonist in Iron Ladies classifies as this, being scumbags, war criminals, wannabe rapists and mass murders. Of all antagonists only two have had redeeming qualities, and they suffered from Redemption Equals Death, all others are complete assholes who got what they deserved.
Liliruca from Is It Wrong to Try to Pick Up Girls in a Dungeon? has been beaten and abused by other members of her guild since childhood. Finally, they leave them behind with a horde of monsters and want them killed by these monsters so they can escape themselves. But Bell is on time to rescue her. One of their tormentors is killed by monster ants in the same episode, and the other two are killed by a Minotaur in the next episode.
As Yoshikage Kira, a depraved serial killer with an abhorrent fetish, struggles to get up after being pummeled by Star Platinum, he's run over by an ambulance car by mere accident. While everyone around is appalled, his death elicited no remorse given the bastard he was.
As we learn in a flashback in JoJolion, the reason Kaato Higashikata has been in jail for the past 15 years is because she killed a child... a child that regularly bullied her son and threatened to burn his face off if he didn't light a girl's house on fire.
Akura-Ou from Kamisama Kiss killed some robbers waylaying Nanami. It is implied he did it because she had canned peaches he liked and not to rescue her.
This is a staple for the mysteries in The Kindaichi Case Files. None of the murderers ever kill randomly out of pure insanity or for money. Instead, it inevitably turns out that the murderer was getting revenge for the loss/harming of a lover, family member, friends, or someone very dear who the murder victim royally screwed over in the worst possible way. There's a rare subversion in one case, however: two victims who were thought to be assholes turn out to be okay people.
Kyochuu Rettou: With so many unpleasant characters, is no surprise there are a few.
Usui is a pervert who tries to rape Mutsumi as soon as they're alone. Nobody is sorry when he's devoured alive by firefly larvae.
Miss Mazawa blackmailed and molested Aoyama even when they were on the island, so her horrible death by ticks is hardly undeserved.
Marika spends her entire page time being an unpleasant and controlling bitch, who does nothing more than get the students she's supposed to protect killed with her ineptitude. Only Aoyama is sad when she's ripped to pieces.
After being nothing more than a nuisance and later raping Suzuki, you won't feel sorry for Kamijou when he's raped by a giant botfly and eaten alive by their larvae.
Prince Lood from Lost Song basically abuses Finis, forcing her to use her song as a weapon of war. He also poisons her servant (who was trying to poison her). But the final straw is when he disguises her love, Henry, as an enemy soldier and forces her to burn him while he laughs at the trick. Let's just say it doesn't end well for him...
Early on in the series, it's revealed that Enchu killed two executors. In Rio's flashback, it's revealed that one of them was a Dirty Old Man who forced Rio to dress in revealing clothing, threatening to prevent her from finding customers for her artifacts if she didn't. The other was an unpleasant old woman who mocked Rio for caving in to the old man's demands. Both of them refused to help Rio when a haunt attacked her mother, leading to Rio's mother's death and Rio doing a FaceHeel Turn.
Face-Ripper Sophie's older sister acted like she cared about Sophie, but mocked her behind her back, claiming that someone as ugly as Sophie would embarrass the family if she went out in public. Sophie then killed her sister, ripped off her face and asked if she could go out with her parents.
Averted with Goryo, the Corrupt Corporate Executive leader of a group of magical law practitioners that uses predatory business tactics. While he has numerous Kick the Dog moments under his belt, he ends up being attacked and abducted as a result of a poorly thought-out offensive against Ark, the main antagonists, so Muhyo and the other protagonists decide to save him. It helps that Goryo's abductor is Tomas, one of the most despicable members of Ark. Nana says that while she hated Goryo for, among other things, sticking her Muggle classmates with a bill for $50,000 after saving them from spirits, she hates Tomas even more.
The Cortlaws, whose children, Ivy, Kid and Mick, joined Ark. Despite the Cortlaws being criminals MLS tried to negotiate with them, but the Cortlaws killed them instead, resulting in them eventually being killed in retaliation.
Michio Yuki from MW has killed off the people who were part of the cover-up of the titular chemical warfare including his boss at the bank he worked at.
Magical Girl Site: Since nearly everyone in this series is either an asshole or a psychopath, this happens frequently.
In the first freaking chapter, the protagonist, Aya, is graphically abused by her classmate Sarina and two of her cronies, who tell Aya that she should go kill herself, stuff her locker full of razor blades, cover her desk in glue and obscenities, physically abuse and torture her, nearly kill her by drowning her in a toilet, and gruesomely murder her pet kitten by throwing it in front of a train. The next day, they enlist one of their upperclassman friends to "take Aya's first time". The would-be rapist and one of the girls, Erika, get what's coming to them when a desperate Aya uses her magical stick for the first time. Said stick being a teleportation gun that teleports them to the train tracks where Aya's cat was killed; the two end up splattered all over.
Sarina has done nothing but make poor Aya's life a living hell since they met in junior high. Her reason? She initially tried to help Aya out when she transferred into her school, but Aya was too shy and scared to even thank her. Sarina thinks that weak people like her are worthless and don't even deserve to live. When two of her friends are killed by a train while attempting to rape Aya, she is beyond livid. Missing the point entirely that her friends were horrible monsters who deserved what they got and playing the role of the victim, she assaults Aya and plans to slit her throat with a box cutter. Fortunately for Aya, their classmate Yatsumura saves her by stopping time with her stick and repositioning Sarina's arm so that, upon Yutsumura's magic wearing off, she slits her own throat instead. Sarina survives, albit with a nasty scar across her neck, but you can't really say that she hadn't had it coming for years by this point.
Aya's brother, Kaname, is a heartless bastard with a God-complex who thinks all humans are trash and sees his little sister as nothing more than a punching bag for him to take out his frustration on over his father's abuse. He regularly abuses Aya so badly that, by the start of the story, she's worried that his repeated beatings to her stomach have messed her insides up so badly that she will no longer be able to menstruate or have children. Later on, he only gets worse by manipulating Aya's mentally unstable and insane friend/ally Nijimi into thinking that he loves her and is a good big brother and then later stealing her magical stick (a pair of mind-control panties). He then uses Nijimi's stick to attack Aya and her fellow magical girl allies and nearly kills them all. So it's hard to pity him when Kichiro Misumi, the police officer in charge of investigating the mysterious deaths of young girls in the area who were massacered by the magical Girl Site's administrators, turns out to be a serial killer and rapist of magical girls and kidnaps, tortures, and repeatedly rapes Kaname.
Kichiro becomes this himself. After torturing and raping Kaname, Kaname eventually turns the tables on him by slashing him with a shard of broken glass and burning his house down.
Yatsumura's mother, father, and unborn sibling were all brutally stabbed to death by a robber who only left her alive so that he could find her once she was older and more attractive and "have some fun with her" before killing her. Once Yatsumura is given a stick with the power to stop time by the Magical Girl Site, she takes her revenge by kidnapping him, holding him prisoner, and torturing him on for months. The guy's misery only ends once he's sliced in half by a pissed-of Sarina, who was trying to kill Aya and Yatsumura in Yatsumura's apartment
Sayuki Ringa is a Yakuza heiress who was once held held prisoner by a rival yakuza clan. She was kept chained to a bed for months and it's heavily implied that she was repeatedly raped and tortured during this time. Once she made a contract with the Magical Girl Site and received her katana magical stick she used it to slaughter all over her captors. Unfortunately, unlike most of the other examples in this series, the fact that they deserved it doesn't cut Sayuki a break; the police were able to track the murders back to her, and her mother was sentenced to life in prison after she willingly took the fall for her daughter
In Mai Hime, the first victim to be killed as a result of a Child's destruction (which results in the death of the person most important to the Hime) is the leader of the gang that tried to rape Shiho, who'd injured Yuichi's arm when he tried to fight them off, and indirectly led to him being forced out of his old school as a result of his actions. Compare this with the anime, when the first person to die is a sympathetic secondary character, and the consequences of which end up being a Tear Jerker.
All of the people who die in Mantis Woman are really mean-spirited people. Bullies. Teachers who love to give extra hard tests just because they can. A family of psychopathic self-appointed Moral Guardians with a very final solution to people breaking even the slightest rule.
Dr. Heinemann from Monster, as well as many of Johan's other victims.
Katsuki Bakugo. It's hard to feel sorry for him when he gets assaulted by the Sludge Villain, considering he told Midoriya to kill himself earlier.
Averted when he gets kidnapped by the League of Villains; the incident is treated as a serious emergency.
At the start of the Meta Liberation Army arc, the League of Villains, strapped for cash, raids the headquarters of the Creature Rejection Clan, seeking to loot any valuables they can. The organization is composed of religious fundamentalists who hate those with heteromorphic quirks (like the League's Spinner, a lizardman), so it's hard to feel sorry for them when the League kills them.
The first people we see Gaara kill are a team of older genin from Amegakure whose leader is an arrogant bastard who tries his best to kill Gaara unprovoked. It's kind of satisfying seeing his Oh, Crap! moment. The next two victims are his teammates who were begging for mercy at the time, and immediately afterwards we see him right on the edge of killing Team 8 as well, so it's immediately clear that Gaara is not a nice person.
Immediately before Gaara's fight, two Grass ninja come in and try to intimidate him into throwing the fight. They also end up dead, and their deaths sate Gaara's bloodlust for the moment, resulting in him not killing Naruto and Shikamaru.
Gaara's dad, the Fourth Kazekage, who had his wife die so he could try to harness Shukaku then shunned and tried to (unsuccessfully) kill his son Gaara, all before he teamed up with Orochimaru to start a war with the Leaf Village. You know Orochimaru doesn't have any kindness in his heart, but it's not like you lament that he betrayed and killed the Kazekage.
Most of the members of Akatsuki have at least some redeeming qualities or a Freudian Excuse that gives them a degree of sympathy. The sole exception to this is Hidan, who joined a Religion of Evil simply out of boredom and to have an excuse to kill people. After he killed Asuma, it feels more than justified for Shikamaru to exact revenge on him by blowing him up in pieces and burying him alive. The fact that, according to Word of God, he will slowly rot before his immortality runs out and he dies for real just makes it the more cathartic.
Let's face it, no matter how good his intentions were, or how much he loved Konoha, Danzo's actions were more negative than good and his personality doesn't really help matters. No one really grieved his death when it came. And that's not even getting into his previous known attempts at assassinating Sarutobi by means of manipulating young Kakashi into doing the deed when the boy was still grieving over his teacher's and his wife's death, nor how he withheld a young Yamato, who was being raised by Danzo's organization until young Kakashi found him and saved him, from attempting to using his Mokuton to try to stop the Nine Tails and prevent the massive loss of live that entailed later. And did we mention that the Uchiha Massacre was actually unauthorized?
Yashiro Uchiha (one of the Uchiha clansmen who questioned Itachi about Shisui's suicide) becomes this in Itachi's Story, which shows him to be a Jerkass who thinks little of Itachi's idealism, and tries to convince Fugaku to rebel, despite knowing it won't' end well for the clan or the village. When the time comes for the massacre, Yashirobegs for his life and dishonestly promises to call off the coup, but Itachi tortures him with Tsukuyomi before cutting off his head. While Itachi had given his girlfriend a peaceful death, and felt tremendous guilt about killing his parents, he feels no remorse for what he did to Yashiro.
Unlike with Obito, nobody seemed particularly upset about Madara getting literally backstabbed by Black Zetsu, force-fed chakra, and converted into Kaguya Ootsutsuki. For one, Obito wouldn't be who he is now if it weren't for Madara in the first place. For another, Madara had a 0% Approval Rating mainly because of how much of an asshole he was. Nobody liked him, even his own clan. However, later subverted since after Kaguya's defeat, as he lays dying, Hashirama, perhaps the only person to have ever truly empathized with him besides his brother Izuna, still considers them friends.
Higuma the first villain in the series a bandit bully who was willingly to kill a child (Luffy) just for insulting him, getting eaten by a Sea King definitely falls under this trope.
Mr. 11, a willing participant in Baroque Works' conspiracy to overthrow the kingdom of Alabasta, gets captured by Smoker and then killed by some of the Billions, who hope to open up an Officer Agent position. It doesn't help Mr. 11's case that he tries to order them to save him, mistaking them for Millions (the subordinates of lower-ranking Officer Agents like him), as opposed to Billions (subordinates of higher-ranking Officer Agents, who could become Officer Agents themselves).
In Skypeia when Nami is exploring the Upper Yard, she meets a Blue-Sea dweller whose found he's way to the sky island looking for treasure but got attacked by the Sky Priests. After the guy begs with Nami to give him a ride, he pulls out a flintlock and yells at Nami to give up her Waver (her only mean of transportation) but he's then disintegrated by Enel's God's Judgement attack.
Admiral Akainu ordering a ship of refugees destroyed just because a scholar might be on it is unforgivably evil. However, the civilians of Ohara often acted as All of the Other Reindeer to Robin because of her Devil Fruit powers, making them considerably less sympathetic than Clover, Olivia and the rest of the scholars.
Disco the former Human Auctioning House owner becoming bankrupt after Luffy and co wrecked his established, freed all his captives and left him dissolute and homeless in Sabaody is nothing but Laser-Guided Karma for all poor lives he treated like property.
In Luffy's flashback arc, he gets captured and brutally tortured by Porchemy, but Ace and Sabo save him. Porchemy's boss, Bluejam, kills Porchemy for letting some kids get the best of him. Some time later, Bluejam agrees to set fire to the garbage around the Goa Kingdom to please some visiting World Nobles, only to end up being betrayed and left to die by his employers.
The Fake Straw Hat Pirates, a bunch of copycats who pretended to be the heroes for two years during the crew's Training from Hell, who lorded over the poor people of Sabaody Archipelago using their stolen reputation to intimidate, bully and get whatever they want. Their arrest at the hands of the Marines and getting literally buried alive by The Starscream Caribou is very well deserved. Even Sentomaru was disgusted by them upon hearing the fake Luffy Demaro Black claim he was the real deal and struck Black down with his axe.
Vergo and Monet in the Punk Hazard arc, two members of the Ax-Crazy Donquixote Domflamingo's pirate crew who are killed in the arc's climax the latter by getting stabbed in the heart by mistake and former by the factory's explosion. Given Monet spent years experimenting on innocent children feeding them drugs disguised as sweets and Vergo was a Double Agent hiding in the Marine ranks and killed some of his devoted subordinates it's hard to feel sorry for them.
Speaking of Domflamingo, his Flash Back were he got lynch mobbed by villagers as a child, still doesn't make him sympathetic in the slightest since he incited it by ordering commoners to bow before him despite him no longer being a World Noble. Doffy also screaming that he'd kill all of them while tied up doesn't help his case either.
Vinsmoke Judge gets held hostage at gunpoint during Big Mom along with his sons and daughter and reduced to a crying mess. This is the man whose the King of a evil army (who are designed with Nazi iconography!), uses clones soldiers as meat shields, genetically altered his wife to give birth to amoral Super Soldier babies, abused the one son (Sanji) who turned out normal and made sure his daughter could never disobey him either. What's more Judge is only at that Tea Party to marry off his most hated son to a Emperor Big Mom's daughter knowing full well how crazy said Emperor is and only sees Sanji as a bargaining tool. Judge's Inelegant Blubbering which mocked by Charlotte Perospero and his own sons comes off as one big Kick the Son of a Bitch moment, before Judge is ironically saved by Sanji.
In Charlotte Linlin aka Big Mom's flashback, her adoptive mother Mother Carmel pretend to be a benevolent nun, when she was actually a Child Trafficker who planned to sell off Linlin and other children in her keep to The Government. Carmel gets eaten by Linlin herself accidentally during a feast.
Absalom a member of former Warlord of the Sea Gecko Moria's crew, gets killed by the Blackbeard Pirates in order acquire his Invisibility Devil Fruit power. Really hard to feel bad about him, since when Absalom first appeared in Thriller Bark he used his power to lick Robin, and then went on to accost Nami while she was bathing shoving her up against a wall in what looked like Attempted Rape and attempted to marry her against her will twice before being defeated.
Same goes for Orochi's relative Kurozumi Kanjuro who lived as one of Oden's retainers the Red Scabbards and pretend to be a good samurai with Undying Loyalty. But was actually a Double Agent who was sending information to Orochi the whole time and admits when uncovered that thought his colleagues's efforts were pathetic before kidnapping and beating up Oden's only son Momonosuke. Kanjuro's death at Kiku's sword is highly welcome.
The parasite Gotou kills a whole group of Yakuza on his first appearance.
Another parasite kills several men who have sexually harassed a woman, and perhaps even try to rape her. One of them even attacks the parasites just because he protected the woman from them.
In one case, however, this is inverted. A whole street gang wants to beat up the parasite Shimada, and just as he wants to kill them, Shinichi comes and saves the gang.
Pokémon: The First Movie: The scientists, especially Dr. Fuji, at New Island's laboratory are self-congratulatory when they create Mewtwo, boasting in front of the Pokémon that they saw it as nothing more than a science experiment. This doesn't sit well with Mewtwo, who kills them all when he breaks free and destroys the lab (Giovanni very narrowly avoids this fate when he boasts about using Mewtwo for war, which makes things worse). Given how Mewtwo almost managed to destroy all of humanity later on, their deaths were absolutely well-deserved.
The two sexist guys on the train in episode 8, who believe that women should be abused as a means of being kept in line. Even as she's becoming a witch, Sayaka is fighting for justice and the viewer is meant to agree with her anger at them, though whether she killed them or not is a massive Flip-Flop of God. In the manga adaptation, there's a blood trail behind her sword. That should tell you enough.
In Rebellion, Homura -having gained godlike power- does something to the Incubators that leaves them horrified and shivering with pain. This is the first time the species have ever shown emotion, something they consider equivalent to insanity. However, given that they've conned all magical girls into a life of slavery and bloodshed, it's hard to pity them.
In the 74th episode of Sailor Moon R, Crimson Rubeus, who spent the previous episodes treating the Spectre Sisters horribly and making them go through a "You Have Outlived Your Usefulness" ordeal, is left to die on his exploding ship by Green Esmeraude after failing to defeat Sailor Moon and kidnap Chibi-Usa.
Makoto of the School Days anime adaptation. He's murdered by the girl he impregnated, abandoned, and she herself might count, depending on your interpretation, when her killing Makoto causes his girlfriend to break completely and kill her.
Double Subverted when Rio nearly kills Gon when the latter tries to rape Ruri. While Rio eventually calms down and spares him, Gon is sold off into slavery as punishment for his crimes, meaning Gon escaped death only to meet a worse fate.
Reiss forcibly transforms Alphonse into a ghoul, which while horrifying, isn't all that tragic due to the latter being one of the students who bullied Rio and framed him for nearly getting Flora killed. For additional karma, he leads an attack on Amande city, only to be easily killed by Rio.
In The Seven Deadly Sins, a boy is robbed and beaten by three men. Finally, they pursue him to his house and throw a stone at him through window to further injure him; fortunately for the boy, his sister is a knight, and protects him so that only the windowpane breaks. Later in the night, as the men talk about going back to the house and setting it on fire, the boy's sister tracks them down and kills them.
Shiki has Tomio Ookawa, an older but strong and muscular man. He has beaten and mistreated his son for little reasons of years for years, and is later one of the most fanatical vampire hunters, killing both good and bad vampires. He even kills his own son after he becomes a vampire. Finally Seishin kills him, leaving his body in a burning cathedral.
Masao is cowardly, selfish, and narcissistic. As a vampire, he is just like he was as a human. It is also shown that he has relatively little inhibition to attack humans. It is heavily implied that he will be killed by his sister-in-law. Eventually, however, it is undermined when it turns out that this is what he has become because of his family's neglect.
Tatsumi is one of the few vampires who can move outdoors during the day. He is also a cruel sadist who demands absolute obedience from the newly created vampires. He even threatens to take them outside during the day and expose them to sunlight if they ignore his orders. He proves to be excessively brutal in combat. Eventually, however, he is killed by Natsuno.
Strider Hiryu: During the final chapter, Vice-Director Matic gets impaled in the chest by Yggdrasil, the heart of the ZAIN Mind Control Project he desired for three years. Given how much of an irredeemable monster he was up to that point, it's safe to say he deserved his brutal death.
Corvatz, an officer in the "Army," a group that ostensibly helps lower-leveled players, is an unpleasant and rude individual who demands that Kirito hand over his hard-earned map data, only giving him a rather insincere thank you and no compensation. He ignores Kirito's warnings and forces his exhausted men into battle with The Gleam Eyes, boss of the level, which gets himself and two of his subordinates killed. It later turns out that he was the victim of an Uriah Gambit by Kibaou, but it's hard to feel sorry for him.
Oberon, the villain of the series' second arc, conspired to use VRMMO technology to achieve Mind Control, conspired to marry Asuna while she was still comatose, kept her caged in Alfheim Online, then near the end, tortured Kirito while sexually assaulting Asuna in-game and threatening to have his way with her body in the real world. Needless to say, no one shed a tear for him when Kirito wrested control of the game from him, turned off his pain inhibitor, and killed him in-game so viciously, his real-world player suffered permanent injuries.
Zexceed, Death Gun's first victim and the only one who shows his personality much, is introduced smugly giving an interview, even as it's revealed that his success is in part due to tricking people into having AGI-related builds, when he himself invested points into STR to equip some of the newer guns.
In the world of Talentless Nana, superpowered individuals called the "Talented" are feared by the rest of humanity due to their incredibly destructive potential and tendency to develop murderous god complexes. Nana Hiiragi is a government-sponsored Serial Killer meant to quietly get rid of them and most of her victims are shown to be well on their way to becoming megalomaniacal supervillains or already abusing their gifts in horrifying ways.
The anime Tokyo ESP has three schoolrowdies. They try to rape Minami when they find her completely alone. But she got her powers at that moment, and uses them, albeit without purpose, to kill the three. Sadly, for Minami it is the moment when she becomes evil.
Although the Emperor of Arcadia was killed by Fugil, it was understandable considering his long list of crimes against humanity.
Barzeride Kreutzer spent the entirety of Volume 2 trying to force Krulcifer to marry him, all to use her to claim the technology of the Ruins for himself. He's killed by Hayes in the next volume, via forced Body Horror.
Dobar Fest is killed by Yoruka after he orders her and his soldiers to kill Airi for eavesdropping on their plans.
Gerdaf, a Sociopathic Soldier from Heiberg, spends much of Volume 8 trying to break Celestia mentally, only to be killed by an unknown Drag-knight (later revealed to be the King of Vices) when he fails.
Volume 14 features a short chain of assholes getting killed by another asshole, starting with Zweigbergk Gimle, who lost all sympathy when he tried to slowly kill the Triad for insulting his master. Then he's impaled by Hayes, an Ax-Crazy Lord who fused with Sacred Eclipse. Soon after that, Hayes is forced to kill herself due to her sister, Listelka, who is ambitious and lacks empathy towards everyone except herself and Fugil. Finally, Listelka is killed by Fugil when she outlives her usefulness and proves herself to be a threat to the world's balance.
Valvrave the Liberator has Q-Vier, the resident Psychopathic Manchild. When the truth about the Council of 101 comes to light, all of his surviving partners realize what they were fighting for was a lie and switch sides... except him. Living off of his Madness Mantra that his partners were now traitors and thus had to die, Q-Vier instead fought A-Drei, who tries to incapacitate his friend so he doesn't compromise what needs to be done. Unfortunately, the attempt fails as the ricocheted blast hits the cockpit of Q-Vier's mecha, fatally wounding him. Although Q-Vier is happy about dying at the hands of a man he looked up to, A-Drei is still horrified. So... why is Q-Vier an Asshole Victim? Well, of the Dorssian pilots, he's the only one that liked killing way too much and lacked a moral compass, yet A-Drei didn't want to kill him.
Episode 4 of ViVid Strike! featured three girls who had been bullying Rinne. And not the wimpy "call her names and steal her lunch money" kind of bullying. We're talking abut the "vandalize her desk, break and throw a family heirloom in a toilet, keep her from seeing her grandfather when he's suffering a fatal heart attack" kind of bullying. Needless to say, the No-Holds-Barred Beatdown she gave them in retaliation was as satisfying as it was horrifying.
In the earliest mangas, Yami was far darker (sometimes to the point of sadistic) than the more benign spirit he'd eventually become, and would inflict brutal "penalty games" on anyone who threatened Yugi or his friends. However, while most of them didn't actually die, all of them clearly deserved the punishments he inflicted upon them. Case in point: in an early chapter, Yami set a man on fire. The guy was a murderer who had broken out of prison, was holding up a fast food and molesting Tea, and had stated the intention of murdering Yami as soon as their 'game' finished (said game was what set him on fire). In the anime too it isn't clear whether or not he actually killed PaniK or Fake Kaiba during the Duelist Kindom arc, but regardless of what he did to them, both were horrible men who had it coming.
Marik Ishtar's father was an abusive man, devoted far too much to his duty as a Tomb Keeper to spare love for his family. He ignored his daughter, deeming her worthless, only cared for his wife if she could give him children, and treated his adopted son Rishid/Odion as a slave whom he would abuse all the time, and threaten to kill. Finally, as part of his clan's tradition, he carved the image of the Pharaoh's tablet into Marik's back with a knife, despite Marik begging against it and Rishid offering to take his place. This act created Marik's Super-Powered Evil Side, which only didn't lash out then and there because Rishid privately conducted his own ritual to protect Marik; when Mr. Ishtar took things too far with Rishid, Yami Marik emerged and, depending on what version you're viewing, stabbed his father or banished his soul to the Shadow Realm. Regardless, the old bastard had it coming.
Gozaburo Kaiba, Seto's adoptive father, was a Corrupt Corporate Executive who would sell weapons to the armies on both sides of a conflict just to prolong it to make money, and he was an Abusive Parent to both his own son Noah and his adoptive son Seto, who he harshly tried to mold him into his successor, and when Seto turned the tables on him and took over his company in a hostile takeover, virtualized his mind and became intent on world domination through seizing control of computer systems and military facilities. It was hard for anyone to feel sorry when the virtual world was destroyed, deleting him from existence. (Sadly, this took Noah's Heroic Sacrifice to accomplish.)
The same could be said for the Big Five, who were most likely deleted utterly when the virtual world was destroyed. Granted, they only became villains because Seto used their aid to take over Kaiba Corp and then reneged on his promise to give them better treatment in the company, but they still conspired to murder Kaiba twice before (this scheme had been the third) and some of them were rotten in other ways: Gansley, by his own admission, started his backhanded ways when he was a child (dub only), Crump was a Dirty Old Man who targeted Anzu because the thought of stealing a young girl's body appealed to him in a sick way, Johnson was a sleazy Amoral Attorney (likely immoral at times) and Nezbit was a Dirty Coward who targeted Duke, Tristan, and Serenity because he knew they were amateurs at the game. (Ironically, he was the one most upset when Seto turned KaibaCorp from a military firm into a more benign company; Nezbit had no problem building munitions for the military, but would likely never dare put himself within a hundred miles of a warzone where they were being used.)
In Yu-Gi-Oh! GX, Edo Phoenix's adoptive father DD committed several murders using the Ultimate D Card and imprisoned the souls of his victims, the first victim being Edo's father, and he took Edo under his wing to divert suspicion from himself. But when he tried to do the same to Edo, he finally got what was coming to him, struck down by Edo's Destiny Heroes and left to die on his burning yacht. Was he just an Unwitting Pawn of the Light of Ruin? Maybe. But before that, he was still a thief who murdered Edo's father.
Divine, from Yu-Gi-Oh! 5D's. Clearly, he was the biggest asshole in the entire franchise who was not either an Eldritch Abomination or Made of Evil, so it was hard to mourn either when he was believed to have been killed in his duel with the Dark Signer Carly, or when he was actually killed by Earthbound God Ccarayhua later... though it was revealed in supplemental material that he was revived along with the other victims and then arrested. Still an asshole, however.
In Yu-Gi-Oh! ZEXAL, there was Jin, a sadistic Numbers Hunter who, among other things, cheated in duels and tried to force Yuma to surrender by offering a Sadistic Choice, along with making him believe that Kaito - who he had recently nearly lost to - was watching, terrifying both Yuma and Astral. Jin's rather pathetic goal was to work for the real Kaito, being a slavish admirer of him. However, after Yuma finally won, Kaito showed up, and cared little for his loyalty, treating him like his other victims by taking his final Number and his soul with it.
Tarukane and Butajiri from Yu Yu Hakusho. Both of them are killed by Toguro; the former for no longer being useful to Sakyo or the Black Book Club, and the latter for trying to rig the tournament through bribery, which comes off as an Even Evil Has Standards moment for Sakyo. The rest of the Black Book Club also counts, as their deaths mean the Dark Tournament will never be held again.
Zekkyou Gakkyuu often has this, making the frequent Downer Endings easier to swallow; a particularly interesting example is the story "The Girl Under The Bed." The protagonist, after learning that her friends don't like her as much as she thought they did, decides to play a cruel and frightening prank on them instead of ignoring it or finding better friends. In the end, however, the titular character (a spirit who kills people if she deems them bad enough) comes for her instead, since what she did was worse than anything the others did.