No matter how evil the villains are, the good guys can't just kill them: heroes are supposed to be better than that. They need to stay pure and noble (or innocent); role models, exemplars of solving their problems without resorting to bloodshed. If they take another person's life, no matter how justified, they will lose their moral edge, but when the villains are just arrested and hauled away by the police, this isn't satisfying. For one, they have a tendency to escape. For another, the mundane workings of the criminal justice system seem woefully inadequate to hold or to punish a really evil villain. We, the viewers, want to see real justice administered, and we don't trust human hands (or at least not ''heroic'' human hands) to administer it.
So, the writers arrange for the villain to die in a manner that is completely their own fault, or, at least, obviously not the hero's. If they die right in the act of attempting to kill the hero, this gives a particularly nice karmic zing. If they attack after being defeated and then spared by the hero, this is one of the rare circumstances where the hero can dispatch the villain personally and still come across as blameless.
Note that this only applies if the villain is clearly human or the setting's equivalent. If they change into some kind of monster, they are no longer protected by this trope: the hero might hesitate to kill another human, but a mutated, horrendous beast is fair game — doubly so when the villain took this form for the sole purpose of murdering the hero. The trope may still apply if the villain's inhuman nature somehow allows him to escape justice at the mortal heroes' hands; in such a case, their doom would come from a completely unexpected quarter, such as previously abused minions finding and shattering the villain's Soul Jar to avenge themselves, without any involvement from the heroes whatsoever (and the minions possibly not even pulling a Heel–Face Turn) and if a Karma Houdini finally becomes the receiving end of this trope, this is Karma Houdini Warranty.
It's more common in Western markets, as a result of heavy censorship and the general reluctance among writers to feature their character (usually in a show with a younger demographic) doing such acts as killing, especially if they're underage. Occasionally known by the older demographic as "getting one's comeuppance." Given that there is a certain charm to Self Disposing Villainy, this trope can show up in works that allow the hero to kill people; it's just that it's much more common for it to show up in situations where the hero has a no-kill policy for one reason or another.
This trope is less common in more cynical works, where the good guys using lethal force is not only more expected but the refusal for a hero to kill comes off as naive at best and irresponsible at worst.
Compare Asshole Victim, Hoist by His Own Petard, A Taste of Their Own Medicine and Karmic Butt-Monkey. See also Cruel Mercy. Adaptational Self-Defense usually involves this. The Killer Becomes the Killed is a Crime and Punishment Series variant.
As a Death Trope, all Spoilers will be unmarked ahead. Beware.
- Anime & Manga
- Comic Books
- Fan Works
- Films — Animated
- Films — Live-Action
- Live-Action TV
- Video Games
- Western Animation
- In "Bluebeard", the titular Serial Killer is cut down by the brothers of the bride he attempts to murder, just as helpless as the women he terrorized and slaughtered.
- In The Brothers Grimm's "The Robber Bridegroom", the seemingly charming and pleasant bridegroom is a cannibalistic serial killer who lures women to be eaten by he and his men. When a victim's finger is severed, it lands in the bodice of the young heroine who later uses it as proof to prove the bridegroom and his men are murderers, resulting in their executions.
- The wolf that wants to eat the pigs in the tale of the "The Three Little Pigs" gets himself killed in trying to break into the house of the third pig, and in Joseph Jacobs' variant the pig actually eats him. In some versions, the wolf may instead survive his break in and flee, or just give up after failing to blow the brick house down.
- The official music video for Foster the People's "Best Friend" revolves around an envy-maddened supermodel wannabe, who discovers she can steal desired traits from other supermodels by swallowing them whole and alive is ultimately killed when she fails to successfully barf up the dress of her latest kill, choking to death due to it lodging in her throat.
- mothy's Seven Deadly Sins song series has plenty of this:
- In "Evil Food Eater Conchita", the titular character (a hedonistsic glutton who soon develops a taste for everything) eats herself. This is only her first death, and she later escapes the series as an immortal demon, sailing the stars in search of different food to eat.
- In "The Lunacy of Duke Venomania", the duke (an aristocrat who brainwashed droves of women to keep in his mansion) is killed by the fiance of one of the women he kidnapped, who went in a female disguise.
- In "Judgement Of Corruption", Marlon (a corrupt judge who only pardoned those with enough money) is sent to Hell with the exact same words he gave criminals.
- Subverted in "Princess Sleep-Bringer". While Margarita commits suicide by drinking the poison she had given to everyone, this is exactly what she wanted to happen.
- Riliane (Story of Evil), Kayo ("Tailorshop on Enbizaka"), and Nemesis ("Muzzle of Nemesis") are the only ones who avert this trope. Kayo is simply arrested and put to death, Riliane's situation is… complicated (she has a revolution turn on her and execute "her", but they unknowingly capture her brother instead) and Nemesis is the one who's dishing OUT karma in her song.
- The Terran Empire setting for Star Hero isn't a no-kill setting, but manages to sneak this in anyway. One of the later Emperors spent a good chunk of his reign giving people a reason to want him dead. He knows this, so among other precautions his bedroom is heavily armored and has a voiceprint lock on the only door. He also changes the door code daily, to keep assassins from using a recording to get in.
In 2663 he forgot the code overnight and could not get out of his bedroom. His guardian robots refused to allow anyone to approach the door with drills or cutting torches, and the Emperor died of thirst and starvation in his own room.
- In the backlore for Ravenloft, Doctor Rudolph van Richten only became a Hunter of Monsters after a tribe of Vistani kidnapped his son and sold him to the vampire Baron Metis to become that vampire's Bride note . They kidnapped his son because one of their own was mortally wounded attempting to kidnap somebody else's son to be the Baron's Bride instead and Doctor van Richten wasn't able to keep their tribesman from dying. When van Richten caught them, they taunted him about what they had done, confident that their fearsome reputation as masters of curses would keep them safe. They apparently forgot that the Dark Powers are the original curse masters of Ravenloft, and they love horrific karma. They answered the heartbroken man's call for vengeance and gave him an army of zombies who massacred the tribe. The only survivor has spent years running from the undead horde.
- Warhammer 40,000: In the final battle between the Emperor and Horus, the Emperor defeated Horus and then offered him one last chance to turn away from Chaos. Horus responded by completely obliterating the Emperor's last remaining bodyguard. Deciding that Horus was a lost cause, the Emperor gathered up all of his psychic power and wiped Horus from existence in turn.
- Ace Attorney:
- Manfred Von Karma, though it's debatable whether he was sent to life in prison or was given capital punishment (although it's implied that either way he died somewhere between the events of "Rise From The Ashes" and "Reunion, and Turnabout"). Phoenix does a turnabout and proves that Von Karma shot and killed Edgeworth's father when Edgeworth threw a gun and triggered the bullet to hit him. Von Karma goes through a long series of events to get Edgeworth guilty of either that murder, or the murder of another man. By wanting Edgeworth to believe he had murdered his own father, he helped lead to his downfall.
- In Ace Attorney Investigations: Miles Edgeworth 2, one killer fled the country for a few years after successfully testifying in a trial against the man he was framing. Eighteen years later, he admits his crime happily now that the statute of limitations is up — but by fleeing the country while still technically a suspect all those years ago, he wound up extending the statute on the case, giving him a one-way ticket to prison once he confessed.
- Ace Attorney Investigations features Manny Coachen getting murdered by the leader of a smuggling ring. Said leader ordered Coachen to kill a witness to the ring's dealings 10 years prior. The motive as to why said ringleader murdered Coachen? Because he was a witness too. Well, technically there were multiple motives, but this is one of the main ones.
- The victim in case 3 of the first game actually dies by being Impaled with Extreme Prejudice on some metal fence spikes. As revealed during the trial, the woman whom he tried to kill and who pushed him on the spikes witnessed her boyfriend being accidentally killed by the victim in the exact same manner on the same spikes.
- Case 03: True Cannibal Boy: The original Cannibal Boy ate several innocents to satisfy their grudge against their home village. In turn, they are eaten by Brucie's assimilated evil spirits and added to his collection. At this point, Lily wonders if Brucie is the one who is more deserving of the moniker "Cannibal Boy."
- Danganronpa is fueled by Death by Irony, with the executions of the killers in the Deadly Game being typically tailored to either the killer's Ultimate talent, their personality, or both at once. However it's Zig-Zagged by the fact that the killers are just as likely to be victims of circumstance rather than bad people due to the way the game is structured, but the Killer Game Master Monokuma doesn't care about circumstances and just wants everyone to suffer. There are, however, some people who really had their deaths coming. Kaito's execution is the only positive example as he got to fulfill his dream before the execution could get to him. His sickness is what's killed him rather than Monokuma's execution.
- In Double Homework, because he digs too deep into the inner workings of Dr. Mosely’s experiment, Dennis, who has manipulated everyone up to this point, gets shot after begging for his life, standing, bloodstained, in the snow, only clad in underwear.
Dennis: You don’t have to do this!Dr. Mosely/Zeta: No, I don’t have to do this. This is for my own satisfaction.
- Fate/stay night has this happen oh-so-satisfyingly to Shinji Matou in two of the three routes. In Fate, it takes the form of fleeing the scene of Rider's annihilation at the hands of Saber and Excalibur only to run into Ilya and Berserker. In Heaven's Feel, he meets his end at the hands of his own sister Sakura of all people when he tries to blackmail her into a position where he can rape her.
- Nine Hours, Nine Persons, Nine Doors: 9 years ago, Ace threw Akane into the incinerator for his research about curing his own prosopagnosia. In the "Safe" ending, he gets his comeuppance in the very same room by being burned alive.
- During Arcueid's route in Tsukihime, a combination of factors make Shiki go briefly insane and sexually assault a drastically-weakened Arcueid. The player can choose whether Shiki gets a hold of himself, or gives in to his desire and rapes her. The correct choice, naturally, is to stop; the next night, Arcueid has another spasm and tries to drink Shiki's blood… and hesitates, long enough for Ciel to come to Shiki's rescue. If Shiki gave in to his dark side and raped her, on the other hand, Arcueid doesn't hold back, either…
- The Accuser: That's what Dr. Pirot gets for helping a serial killer to survive execution.
- Happy Tree Friends loves this trope. The characters are already unlikely to survive any given episode as is, but as a rule of thumb, acting immorally or otherwise like a jerk is a good way to lower your chances even more. The episode "Sea What I Found" provides a good example: Lifty and Shifty steal Disco Bear's golden submarine in order to steal treasure from Lumpy and Russell, which they successfully do. When the submarine goes over an underwater volcano, it begins to grow in temperature and fall apart, causing Lifty to get stuck under some debris. Instead of helping his brother, Shifty takes the gold and treasure he was wearing for himself and leaves Lifty to die. However, after having to force himself to walk due to his feet sticking to the hot floor, ripping off the bottoms of his feet in the process, he finds himself too weighed down by all the gold he is carrying to crawl through the porthole leading to the ladder so he can climb up. And then, the gold reaches its melting point, causing him to get rapidly covered by boiling hot molten gold, resulting in him getting turned into a solid gold statue. As for Lifty, he survives the submarine exploding with fairly minor injuries, only to see his brother's golden corpse. Rather than swim to safety, he instead tries to drag his golden brother back to shore, entirely out of greed, mind you, only to get his arm stuck, resulting in him drowning.
- Meta Runner:
- Lucks had spent nearly two years covering up the fate of Lucinia, even willing to threaten and lie to the media and even his own Meta Runners just to keep it secret. Not only do his misdeeds eventually get exposed, but he ends up getting killed when Dr. Sheridan, the man who Lucks allowed to run his dangerous experiments unchecked and start this whole dilemma in the first place, takes control of Masa’s Meta Runner arm and shoots him point blank in the head. And for extra irony, Sheridan uses the exact same gun Lucks did to shoot off Masa’s original arm.
- The show’s Greater-Scope Villain Dr. James Sheridan is stated to have been anonymously selling Meta Bugs, computer chips capable of causing technology to malfunction, with him using one to make Masa kill Lucks. Among the people he sold the Meta Bugs to was Masa, who used one to cheat in a competition against Marco so he could get a replacement Meta Runner arm. In the Grand Finale, Marco gets hold of Sheridan and uses a box of Meta Bugs to electrocute Sheridan to death until all that remains is his charred corpse.
- NCHProductions: A Barioth in "MHWorld Shots: MHWorld Iceborne demo in a nutshell" throws a Tigrex off a cliff in an homage to Mufasa's death in The Lion King (1994). They are then booted off said cliff by a Hunter, killing them.
- While fighting Roman and Neo on top of a flying battleship, Ruby's knocked down and hangs from the side of the ship helplessly. Neo leans on her unopened weaponised parasol to kick Ruby off the ship, allowing Ruby to grab the parasol's catch; it opens, catches the wind and blows Neo off the ship, while Ruby regains her footing. Roman then brutally beats Ruby to the ground, ranting about her misguided idealism in a savage world where most huntsmen die young. His heightened negativity attracts the negativity-sensing Creatures of Grimm, and one swallows him whole just as he's stating that the only thing that matters is survival skill.
- From Volume 7, Ironwood's actions stem from his desire to protect Atlas, the two Relics and Winter Maiden from Salem, but he constantly shifts the goal posts on what that means. Believing himself to be their only hope, he loses his mind to stress and fear and descends into villainy, sacrificing everything else in the name of "protecting Atlas" and losing the trust of the heroes and kingdom's people. Abandoned by even the Ace Ops, he dies buried beneath the fallen ruins of the city he was so obsessed with saving after forcing the heroes to rescue the people instead of Atlas. Salem and Cinder successfully escape Atlas with two Relics and leave Ironwood to his fate.
- Francis from the Anime Arc had been using machines known as Ink Zuccers, which extract the ink from Inklings in a torturous manner, in order to fuel Inkweaver, with the intention of using it to make an island of living Anime waifus. In the climax of Final Hours, Francis meets his end in one of these very machines, getting thrown in by Saiko, a living Anime girl like he was trying to create. To add extra fuel to the fire, an Ultra Instinct Goku he created using Inkweaver ends up self destructing, blowing him and the rest of the island he was on up.
- Throughout the Revelations Arc, the Box Club Leader had been seeking the God Box, a gigantic box in the Great Beyond that supposedly will grant him unlimited power. In SMG4 Movie: Revelations, he finds the God Box and jumps right in, before having a Super-Power Meltdown and being incinerated as he’s unable to handle the power.
- During SMG4 Movie: Western Spaghetti, One-Shot Wren had been using a simulation machine gifted to him by the Mysterious TV Guy as a Lotus-Eater Machine, trapping the gang inside. Once the gang escapes, Wren tries to prevent them from leaving, trying to bring the simulation into the real world. The instability of this causes the machine to collapse, with him still inside.
- In this YouTube Poop, Ugandan pastor and real-life Heteronormative Crusader Martin Ssempa suffers this when Hectan accidentally teleports directly over his hand while Ssempa is graphically describing sexual fisting as a degenerate act attributed to gays, causing the former to be fatally impaled through the anus by the latter's arm. This, in turn, causes Ssempa's followers to violently turn against him for committing the act he himself had taught them to demonize, and Dr. Rabbit, who had saved King Harkinian from a gay-hating mob incited by Ssempa in a previous video, refuses to do the same for him.
- In the Achievement Hunter Minecraft Series Ya Dead, Ya Dead 2018, Ryan, while dicking around, ends up shooting Gavin off of a ledge with an arrow, which sends him plummeting to his death. Wracked with grief, Jeremy decides to avenge Gavin. When Ryan starts building a tower to get away from him, Jeremy pulls out a bow and shoots him off the top, sending him falling to his death.
- Critical Role:
- Delilah Briarwood is offed three separate times, each by members of the de Rolo family whom she slaughtered and tortured: first Cassandra, then Percy, then finally Vex'ahlia.
- Similarly, her husband Sylas Briarwood is killed for the second (and likely final) time by Vex, whose wedding he crashed in an attempt to kill her and Percy.
- Thordak, the Cinder King and leader of the Chroma Conclave, has the most damage dealt to him by Vex and Vax, whose mother Thordak killed when he raised the village of Byroden. Vex destroys the Power Crystal embedded in him, seriously weakening him, and Vax delivers the killing blow.
- Raishan, the true mastermind of the Conclave whose greatest asset is her intellect, is Feebleminded by Keyleth in a move that significantly weakens her and reduces her to nothing but a mindless beast. Raishan had a personal enmity with Keyleth, as Raishan's machinations led to the deaths of many in a tribe of Keyleth's people.
- Utugash the Pit Fiend is killed by guest character Tova, whom he had imprisoned and tortured.
- Dragon Ball Z Abridged: Through the entire show, Super Kami Guru has been a bigger asshole than even the villains of the arc, to the point he decided to die just because dying at that exact moment would be a giant dick move. After it's all said and done, and he's revived but dying of old age, he decides to make one final Deathbed Confession that the giant drought he had blamed on the Albino Namekians was actually his fault, thus the latter were slaughtered for nothing. Then, he gurgles one last breath as everyone is too shocked to respond... only to realize he isn't actually dying, and is fine. At least until the enraged Namekians present tear him apart so viciously even Vegeta, who was watching the whole affair, is disturbed.
- Survival of the Fittest:
- Jack O'Connor cheats in a Ten Paces and Turn duel, only to find his opponent (Adam Dodd) had been walking down a slope (something of a Deus ex Machina). Jack shooting early allows Adam time to find his aim and fatally wound Jack to win the fight and v1. This also apparently makes the fact that Adam was planning on cheating okay simply because Jack tried it earlier.
- Laeil Burbank's first kill (and, in fact, first scene in V3) involves her torturing her helpless cousin, leaving him begging for mercy before killing. Of course, it's only fitting that her death involves a helpless Laeil getting horribly tortured and left to die, also begging for mercy. It's also a rare case of a Karmic Death where one can feel sympathy for the victim, mostly because her cousin was a dickweed, she had something of a temporary Morality Pet in both Jimmy Trejo and Eddie Sullivan, and the guy who tortured her, JR Rizzolo, was a monster. And there's also her tragic Back Story...
- In another example, rapist and literal lady-killer Adam Reeves has a two-for-one when he gets his nuts blown off right before his death at the hands of Alexis Machina.