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Movies don't all have to end with an all-out, epic Final Battle; sometimes the heroes simply turn the villains' plans on themselves.

Films — Animated

  • Aladdin: Jafar has Aladdin cornered and brags that he's the most powerful being ever and that Aladdin is nothing without the Genie. This gives Aladdin the idea to claim that his power is only second to the Genie's, tricking him into using his last wish to become an all-powerful genie, resulting in being imprisoned in his own lamp.
  • Though he survives, it's his own love for opera that undoes the Cat R. Waul's plan in An American Tail: Fievel Goes West. Though his plan is initially to kill all the mice in town with a giant mousetrap, once he hears Tanya's singing, he decides to spare her. When she discovers Cat R. Waul's plan, she places herself on the mousetrap to warn the others. Cat R. Waul stops his henchman from activating the mousetrap to keep from killing her and her beautiful voice, giving the other mice a chance to escape. This very same mousetrap is also used to catapult Cat R. Waul and the other cats out of town.
  • Towards the end of Barbie & The Diamond Castle, Lydia is turned to stone by the very spell she was casting on the heroines.
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    • A better Barbie example would be Barbie as Rapunzel. Gothel casts a spell to try and trap Rapunzel permanently within the tower, but the wording of the spell meant it was Gothel who ended up sealed inside, while Rapunzel was able to just stroll right out.note 
    • And Diamond Castle wasn't even the first time Barbie bounced back a spell to its caster: in her version of 12 Dancing Princesses, her Wicked Stepmother has a wish-granting flower. Genevieve (Barbie) has a fan. Figure it out. What makes it this trope is the fact that earlier in the movie, said villain was seen giving Genevieve and her sisters a lesson on how to use said fan.
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  • In The Batman vs. Dracula movie, even though The Joker has his namesake immunity, he briefly experienced this after he plummeted into a canal with a malfunctioning electrified joy-buzzer.
  • In The Black Cauldron, the Horned King spends the entire movie trying to get his hands on the Black Cauldron, an Artifact of Doom that can create an army of invincible undead warriors out of corpses. Gurgi's sacrifice near the end of the movie causes the Cauldron-born to die. The Horned King, who was pushed near it by Taran, realizes to his horror that the Cauldron is drawing him into it. The Cauldron reduces the Horned King to dust as it sucks him in and brings the castle down with him.
  • At the climax of Cars 2, Miles Axlerod straps a Time Bomb to Mater and leaves him chained up in Big Ben to die. Naturally, Mater escapes, and confronts Axlerod in public while the bomb is still ticking down. At the last second, Axlerod panics and issues the verbal deactivation code, saving himself and Mater but outing himself as the Big Bad in the process. Of course, if he hadn't done that, he would have been blown up by his own bomb, which would also be this trope. He was screwed either way.
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  • In Cats Don't Dance, Darla Dimple's attempt to discredit animals one last time backfires as each thing she does just adds more to their show-stopping performance. As the roof-blowing finale pushes her into a Villainous Breakdown, she cements her hoisting by crawling over to Danny and, unwittingly, growls out that she "Should have drowned them all when she flooded the stage" in front of the audience.
  • Mrs. Tweedy, the main antagonist of Chicken Run, after accidentally cutting the Christmas light chain on the crate, falls back into her own chicken pot pie machine, causing it to get jammed and explode. All her Henpecked Husband afterwards is "I told you they were organized!", and then push the barn door down and crushes her, after she growled at him through gnashed teeth.
  • In Despicable Me 3, Gru defeats Balthazar Bratt with the latter's own keytar and giant bubble gum bubbles.
  • Heavy Metal segment "Taarna". Taarna kills the Barbarian Leader by pushing his chainsaw hand into his own chest.
  • In Help! I'm a Fish, Joe the pilot fish dies (rather horribly) when he drinks too much of the Anti-Fish potion, effectively turning into a human. Whilst underwater. He drowns.
  • In The Hunchback of Notre Dame, Frollo while trying to kill the heroes, keeps hacking the stone gargoyles they are clinging to with a sword. The circumstances conspire so that he has to use one of the gargoyles for support. As he climbs on top of the gargoyle and raises his sword to kill Esmerelda, Frollo bellows "AND HE SHALL SMITE THE WICKED AND PLUNGE THEM INTO THE FIERY PIT!!". But just then, the cloven stone breaks under his weight and he plunges to his death.
    • For extra flavor, said gargoyle appears to come to life to snarl at Frollo, who has only enough time to let out a shocked cry of "NO!" before he falls.
  • The Incredibles
    • Syndrome is knocked onto the wing of his jet and subsequently sucked into its engine. There's a long enough pause between the two that Syndrome easily could have survived had he not been wearing a cape (which the audience had been warned is a bad fashion choice for a superhero), or remembered one of his rocket boots was still working.
    • This happened a good deal to Syndrome. His robot was so smart that it figured out his wrist computer was a threat and shot it off. He was knocked into the engine by Mr. Incredible's sports car, which Syndrome had essentially paid for by hiring him for secret hero work. Also, this secret hero work helped Mr. Incredible bounce back from a flabby has-been who barely survived a prototype robot, into the efficient, superheroic persona of his glory days who could fight back. And his right-hand, Mirage, betrays him at the critical moment, largely due to his own cavalier attitude when Mr. Incredible was threatening to kill her.
    • Speaking of the robot, the only way to destroy it is to get it to attack itself, which becomes a Chekhov's Gun when fighting the second, more powerful robot. Score one Moment of Awesome for the Parr family, and Supers in general besides.
  • Similarly to the comic book variant, in Justice League: The Flashpoint Paradox, Zoom confronts Barry Allen and begins beating him up, gloating over how he broke time saving his mother, but Zoom can do whatever he pleases because trying to stop Zoom will break time. He doesn't count on the Thomas Wayne Batman shooting him in the head.
  • Lord Shen in Kung Fu Panda 2 invents cannons, which he uses to kill some of the best kung fu masters in China and plans to conquer all of the land. Po manages to find inner peace and masters the technique for catching raindrops without breaking them, which he uses to catch cannonballs and throw them back. Thus Shen's entire armada gets destroyed by their own weapons. He is killed when he tries to kill Po with his knives and accidentally cuts a rope that holds his biggest cannon, causing the heavy weapon to fall on the wicked peacock, crushing him to death.
  • Mentioned in the DVD Commentary for The Lion King (1994) when Scar is eaten by his hyena minions, who had heard him lie to Simba about how they were his enemies. Even moreso when it appears as if the trio were all set to come to his aid before they heard him throwing them under the bus to save his own skin.
  • The Little Mermaid (1989): Ursula (now gigantic) became a bit of a showoff when she aims the trident of King Triton at Ariel, until Eric rams a sunken ship's splinter bowsprit into her. And to top it off, the built-up power in the trident backfires on Ursula, electrocuting her brutally before she sinks into the ocean.
  • In Pixi Post & the Gift Bringers, the Big Bad uses a device to turn the other holiday genies, and at one point the protagonist herself, into advertisements. When his plan has been foiled, he attempts to use it on Hoteiosho and Pixi again, only for Pixi to reflect the beam with a piece of ice and turn him into a rubber ball that is then played with by her whale friend.
  • In the animated film version of Planet Hulk, the Red King gets a triple whammy on this trope, as he is betrayed by his Shadow who he had personally sought after, infecting him with his greatest weapon which he personally called his "Legacy", which led to him being burned to death by the very Mecha-Mooks that he had called upon as reinforcements as they had been programmed to exterminate all infected beings.
  • In The Princess and the Frog, when Dr. Facilier's demonic amulet gets shattered, that's considered to his Friends on the Other Side as breaking their contract, causing the shadowy demons that once worked for him to drag him into a gaping mouth to his doom, all the while happily chanting the exact same song that he was singing when he was cursing Naveen.
  • In Quest for Camelot, Ruber's tricked into slamming Excalibur back into the Stone. However, since he had earlier used magic to fuse his hand with the legendary weapon (since the weapon would not allow him to wield it otherwise), the magics inside the stone reacted violently, tearing apart the mad knight.
  • At the end of Robots, Big Bad Madame Gasket falls into her own incinerator, which she was previously established as using to melt down lower-class robots into products for her son's company to sell.
  • At the end of Snow White and the Seven Dwarfs, the Evil Queen (disguised as the Witch) actually threatens to kill the seven dwarfs by crushing them with a boulder after they've discovered that she actually "killed" Snow White with a poisoned apple and had her cornered at a cliff. Just right before she dislodges the boulder, the ledge the Queen is standing on is struck by lightning, and she plummets into the gorge below. Shortly afterwards, the boulder falls off the same cliff in the same direction as the Queen. Splat! And to top it all off, the two vultures that had been following her the whole time swoop down toward her body...
  • In Steven Universe: The Movie, during their initial fight, Steven is able to defeat Spinel using her own rejuvenator. However, this bites him in the ass not long after, as it's designed to revert Gems to their factory default states and he needs to restore the mind-wiped Spinel's memory because she's the only one able to stop the Doomsday Device that she brought to destroy Earth.
  • A Downplayed Trope in Strange Magic. The imp is only successfully caught by Sunny because of help from the lizard that the imp had love potioned into loving him. The imp had love potioned the lizard partially so that Sunny wouldn't get eaten by the lizard, and partially because it amused him to have a lizard fall in love with an elf.
  • The Swan Princess: In the third film, Zelda traps Odette and Jean-Bob inside a green dome that will destroy anything that touches it. Her fight with Derek ends with him knocking her onto the same trap, instantly vaporizing her.
  • Tangled:
    • Gothel knocks aside her own basket in her haste to avoid the search parties. If she hadn't, the flower she was using to keep her youth would never have been found.
    • Flynn's attempt to scare Rapunzel back to her tower, with the Snuggly Duckling, backfires badly when the thugs there realize they can turn him in for the reward. Only Rapunzel's intervention saves him.
    • Gothel's vanity is what ultimately does her in when Flynn cuts Rapunzel's hair, killing the magic in her hair — and letting himself die in the process.
  • In Disney's Tarzan, Clayton repeatedly tries to slash Tarzan with his machete. Tarzan throws down a cluster of vines to entangle Clayton. Clayton slashes through the vines in a blind fury, not noticing one is wrapping around his neck. He chops through all the vines holding him up and plummets with the one still wrapped around his neck. The vine pulls tight and Clayton is hanged.
  • Starscream's Chronic Backstabbing Disorder comes back to bite him in his shiny, metal ass terminally this time in Transformers: The Movie when he dumps the badly damaged Megatron out into space. This puts Megatron in a position to be found by Unicron and reformatted into Galvatron. Naturally, Galvatron decides to test his new weapons out on Starscream.
  • One of the tasks in The Twelve Tasks of Asterix is to enter The Place That Sends You Mad and retrieve a certain permit. However, the building is full of incompetent, selfish or unhelpful Obstructive Bureaucrats, a nonsensical structure and tons of rules and required documents. Asterix drives this against them by asking for a non-existent permit, based on a non-existent note... which makes the bureaucrats run around in circles, unable to find either, and eventually going mad.
  • In Wreck-It Ralph, King Candy has this inflicted on him twice. The first time, he grapples with Vanellope as he attempts to kill her. Her glitching ends up revealing the truth — that he was the thought-dead racer Turbo. The second time, after fusing with a Cy-Bug, he became drawn into the Diet Cola Beacon through the Cy-Bug's programming, and is destroyed by the hot soda.
  • In Zootopia, Bellwether's plan is to have a savage Nick kill Judy, allowing her to further inflame anti-predator sentiment. As such, she calls the ZPD to come witness the death of Judy, but she does so before Nick actually kills her. When it's revealed they are carrying out a Batman Gambit, Bellwether has no time to adjust her plans (which Judy had caught on tape) and is caught red-handed by the ZPD.

Films — Live-Action

  • In 10 Cloverfield Lane, as Howard started stalking Michelle as payback for trying to escape the underground bunker, Michelle dunks Howard with his own barrel of perchloric acid that starts corroding Howard to death.
  • The ABCs of Death: In the "H" segment, Frau Scheisse falls victim to her own Death Trap.
  • Across the Universe: The anti-war activists Lucy joined turn to violence out of anger over the continuing war and peaceful protests being quashed, building pipe bombs (though she doesn't join in). Later, it's revealed that they blew themselves up accidentally (probably based on some Weathermen doing this).
  • Debbie Jellinsky of Addams Family Values gets hers big time when she rounds up the entire family (with the exception of the new baby, Pubert) and puts them all in electric chairs. Pubert, after taking a very improbable trip to the sky, lands in the middle of the basement where Debbie is carrying out her plan and connects two frayed cords just as she throws the switch, which proves to short-circuit her plans as she is electrocuted instead.
  • In The Adventures of Rocky & Bullwinkle, Fearless Leader (Robert De Niro), Boris (Jason Alexander) and Natasha (Rene Russo) are de-generated by their own CDI (Computer De-Generating Imagery) which they attempted to use on Rocky and Bullwinkle over the course of the movie. They are transformed back into cartoons and are sent into the internet "where they were heard from no more."
  • Alien
    • The Corrupt Corporate Executive in Aliens who ordered the colony to acquire the alien eggs (and thereby caused all of their deaths) was eventually killed by the aliens himself.
    • In Prometheus, the Engineer's own bioweapon is what kills him in the end. Though, Shaw stuck it on him making it a borderline case.
  • In Anaconda, Sarone tries to feed a bunch of people to the biggest Anaconda to capture it, but the Anaconda escapes from its restraints and pursues him instead, eating him whole.
  • In Andhadhun, Manohar tries to shoot his way out when he is trapped in an elevator. The bullet ricochets, killing him.
  • Assassin's Creed (2016)
    • By imprisoning multiple Assassin descendants and putting them into the Animus, Abstergo is able to track down the Apple of Eden. However, they realize too late that they've also made their prisoners stronger thanks to the Bleeding Effect, allowing them to escape and take down many of their personnel. To make matters worse, their victory in finding the Apple is short lived because those very same Assassins are able to infiltrate their grand temple, assassinate Alan Rikkin, and steal the Apple. One of the security officials even lampshades it while looking at surveillance footage of Callum:
    "We are feeding the beast."
    • Collecting the weapons of previous Assassins (most likely for research in boosting synchronization) might have seemed harmless at the time. That is until it gives their prisoners a full armory to take down everyone.
  • The Assignment (2016): After his unwanted sex reassignment, Frank gets back at Dr. Jane by mutilating her hands so she could never operate again.
  • The Avengers (1998). While Sir August is fighting Steed, he's stabbed through the chest with his own fighting staff and then hit by a bolt of lightning from his Weather-Control Machine and killed.
  • In the Disney adaptation of Victor Herbert's Babes in Toyland, Barnaby, having come into possesion of Grumio's shrinking gun, which is used to shrink objects down to toy size and which can then be shrunk away into nothingness when used a second time, discovers that the shrinking gun works on people, too, since he uses it to shrink the Toymaker as a test. Barnaby then uses it to shrink Mary Contrary's beau, Tom Piper, so that Mary will be forced to marry Barnaby, lest he use the shrinking gun a fatal second time. Fearing for Tom's life, Mary agrees. But as the wedding begins, the shrunken Tom sneaks away to assemble an army of toy soldiers to launch an all-out attack on Barnabyright at the moment where the Toymaker, forced by Barnaby to be the wedding parson, asks if anyone objects, which Tom, of course, does. When the attack ends, Barnaby retaliates by grabbing the shrinking gun to make good on his threat to shrink Tom away forever. But before he can do this, Mary grabs a toy cannon used in the attack and fires a shot from it at the gun, shattering it and spilling its contents all over Barnaby, shrinking him down to toy size, whereupon he is forced to fight Tom directly in a Sword Fight (his cane is in fact a sword in disguise). Naturally, Barnaby loses.
  • In Back to the Future Part II, Future Biff meets his end when he gets back to 2015 from sending the almanac to his younger self. This action, though it made his alternate self rich, also resulted in Lorraine killing him in 1996-A, as revealed on the audio commentary, which caused old Biff to fade from existence upon returning to 2015.
  • Batman
    • Batman Returns has the Penguin getting this in spades. When he appears to have the race for Mayor of Gotham City in the bag, Bruce Wayne and Alfred broadcast his previous rants directed at Batman over the loudspeakers during his speech, which include such gems as "I played this stinking city like a harp from hell!" Penguin's Villain with Good Publicity status goes bye-bye, and the eggs and tomatoes are broken out. Later, after his plot to kill all the first-born sons of Gotham is foiled, Penguin straps rockets to his hundreds (thousands?) of penguins in order to destroy the city. Alfred is able to jam the signal used to control them, sending them off to follow a new beacon. When Batman arrives at his Elaborate Underground Base, Penguin wields a sword-umbrella, only for Batman to simply pull out a small remote control with a blinking red button. His eyes shift from the control, to something on the opposite side of the screen. Penguin does likewise, and sees his entire penguin army. He snaps (further than he already had) and is able to take the controller and press the button. The rockets launch, destroying what remains of the park, but also releasing a swarm of bats from the Batski which immediately descend upon the Penguin (a double Hoist By His Own Petard when you remember that he used a similar swarm of bats released by an umbrella in order to send the Ice Princess off a building and kill her, framing Batman for the whole thing). He stumbles backwards, through the ceiling glass, and into the icy polluted water.
      • Max Shreck, the other major villain, after receiving a Humiliation Conga of his own for his manipulation and betrayal of the above villain, is eventually electrocuted by a power overload to the Arctic World park (presumably coming from the power plant that he had been doing a lot of his evil doings for), with the Kiss of Death delivered by none other than Catwoman, whose alter ego (Selina Kyle) he had been treating like shit through most of the movie. Turns out that one really can have too much power.
    • Two-Face in Batman Forever is done in by his reliance on his special double-headed coin. When he flips it to decide whether or not to shoot Batman, Batman throws a handful of coins into the air to obscure it, causing Two-Face to lose his footing and fall to his death as he tries to grab them all.
    • Poison Ivy in Batman & Robin is ultimately undone by her own kiss and her plants. When she finally gets Robin alone she is able to get him to kiss her by telling him her plans, as a sign of trust between lovers, but immediately shows her true colors after their kiss. Robin reveals he protected himself from her poison with rubber lips, and Poison Ivy had just given herself away, failing Robin’s Secret Test of Character to see if she loves him. Shortly afterwards she is defeated by Batgirl and knocked back onto her own Rose Throne, which closes on her and traps her. The Rose Throne was part of her seduction of Robin, a sign of her false love to him, being where they shared their kiss and after Robin outsmarted her she angrily shoves him from it, out of its range of harm. Ultimately her seductions of Robin led to her own undoing.
  • In Bats, McCabe is killed by the bats he genetically engineered to be the ultimate predator and to prey on humans.
  • Berlin Syndrome: Clare lures Andi back into the apartment near the end, having been released by his student Franka, and then locks him inside after he'd shut down the utilities in preparation to move.
  • In Bloody Homecoming, the killer dies when they fall on top of the sharpened spirit staff they have been using as an Improbable Weapon and are impaled. At the time, the staff is stuck in their husband.
  • In Bride of the Monster, Dr. Eric Vornoff is killed by his own giant octopus. "He tampered in God's domain."
  • Vic Deakin (played by John Travolta) of John Woo's Broken Arrow gets hit by the nuke he intended to slaughter innocent millions with. It doesn't detonate, though.
  • In Cabin by the Lake, serial killer Stanley murdered his victims by tying their feet to a concrete block and drowning them in a lake. As he tries to kill his two latest victims an underwater fight ensues with the police and they kill him in the same way. Subverted when they throw in a "the killer has survived" ending even though there's no way he could have survived.
  • Captive State: One of the aliens' trump cards is an organic explosive that cannot be detected by any means by humans... or aliens. Subsequently, it's used extensively by the Resistance.
  • In Casper, Carrigan is killed and returns as a ghost, snatching up the treasure hidden inside Casper's dad's workshop and the Lazarus formula and plans to use the formula to rob banks as ghosts and revive herself (now having gotten rid of her Mook). However, Casper and Kat are able to convince Carrigan that she has no unfinished business, causing her to cross over to the other side.
  • Creep Van: The killer has been using his modified van to commit multiple murders throughout the movie. In the end, Campbell uses it to kill the killer by slicing his face off (along with half of his head) with its razor-sharp windows.
  • Criminal: Bill/Jericho has The Dutchman fix the Wormhole program so that any missile Xavier fired would turn back and target him instead.
  • In Crouching Tiger, Hidden Dragon Jade Fox tries to kill Mu Bai with a hail of poison darts, but Mu Bai deflected them back at Jade Fox.
  • C.S.A.: The Confederate States of America:
    • The racism that the Fauntroy family espoused, encouraged, and applauded end up costing John Ambrose Fauntroy V the presidency when he's unable to shake accusations that he has a black ancestor.
    • More specifically, him personally intervening to get the reporter Lindsay an interview with some slaves directly led to the JBU and his slave Horace exposing Fauntroy's possible black ancestry through a clandestine note passed to her by one of the slaves. One wonders if him knowing he engineered his own downfall was a contributing factor to his suicide.
  • Cryan from The Daisy Chain sets a trap for Daisy, planning to burn her to death. Instead, he accidentally sets himself on fire.
  • Non-Fatal version appears in Daredevil, when Matt Murdock's partner Foggy puts some stuff in Matt's coffee as a practical joke. The moment Foggy's head is turned, looking at Elektra, Matt switches their coffees, giving Foggy a taste of his own medicine.
  • The Dark Crystal: SkekZok's killing Kira gives Jen the resolve to heal the Crystal, causing the downfall of the Skeksis Empire.
  • In Dave, White House Chief of Staff Bob Alexander chooses to have Dave pose the President when the real President is felled by a stroke. It works...only Dave decides to go ahead and embark on things against Bob's interests such as a major job bill and because everyone believes he's the President, they go with it.
    • Bob tries to fire Dave only for Dave to fire back that's he perfectly ready to go ahead and tell the world the truth. Too late, Bob realizes there's no way he can expose the scam without revealing himself as the mastermind and going to jail.
    • Fired, Bob tries to hit back by revealing how the President was behind a corrupt S&L deal. Dave proceeds to address Congress, confess to "his" involvement but then reveal files on how Bob was just as complicit in the corruption. Bob ends up being sent to jail, once more unable to tell anyone how Dave is an imposter as it would just get him in worse trouble.
  • DC Extended Universe:
    • In Batman v Superman: Dawn of Justice, during the warehouse fight scene, one of Lex's Mooks tries to use a grenade against Batman. As he pulls the pin out, Batman punches another mook he had hung up by the leg onto him, knocking the grenade to the floor - the resulting explosion taking out both mooks.
    • Justice League (2017): Steppenwolf's Parademons seek out and attack anyone who experiences fear. They turn on him in the end when he experiences fear of failure at the hands of the Justice League. Whether this is fear of the actual League or of what he fears Darkseid will do to him upon discovery of his failure is unclear, but fear is fear to Parademons.
  • In Death Race, Jason Statham's character is imprisoned and forced to participate in the titular event in order to get a "get out of jail free" card. However, the Warden is not willing to let anyone out of prison, especially since the Frankenstein (whom he impersonates for the public) is the most popular racer of all. So she has her guards put a bomb in his car. When Frankenstein starts to win, she has her people detonate the device. Cue the pit crew laughing as the light on the disarmed device turns on with nothing happening. As the lead mechanic puts it, "Nobody fucks with my cars!" At the end, the Warden receives a package. She eagerly opens it, only to find out it's the same (rearmed) bomb. Cue the view from outside her office, as the building is engulfed in an explosion, as the same mechanic looks on.
  • Deep Blue Sea: In the climax, Dr. Susan McCallister is eventually eaten by the intelligent supershark that she herself had modified with illegal brain hormones.
  • In Deep Rising, Simon Canton hired mercenaries/pirates to scuttle his luxury cruise liner and sink it with torpedoes so he could collect the insurance money. He meets his demise when the boat carrying the torpedoes (all of which had been armed previously in the film) collides into the ocean liner...with him on it and helpless to change its preprogrammed course.
  • In Desktop Desperadoes As skillfully manipulative as the main antagonist Alex may be, to leave your gun in a huff within easy reach for a hostage to grab is a mistake somebody with half a brain cell could have avoided. It later backfires even further when he is shot and it evaporates his human hologram disguise. This exposes his true identity, Pointer 95, Pointer's obsolete brother. https://www.youtube.com/watch?v=Zc1tr1cwiZs
  • At the end of Dirty Pretty Things, the villain, who runs an illegal organ harvesting operation that preys on desperate illegal immigrants, has the tables turned on him by the heroes, who knock him out and steal his kidney.
  • In Dick Tracy's Dilemma, The Claw suffers a High-Voltage Death when he attempts to stab Tracy with his Hook Hand and his hook gets snared in the high voltage wires of the electrical substation where he is hiding.
  • Doc Savage: The Man of Bronze: The Indian who had acted as Captain Seas' assassin by using the Green Death (created from the venom of poisonous snakes) falls into the pit holding the snakes and is bitten repeatedly, killing him.
  • In Dream House, Jack Patterson tries to kill Will and Ann in a house fire. It does not end well for him.
  • Dream Lover: Lena. Her scheme to get Ray committed allows him to strangle her to death without legal consequence.
  • In Dumb and Dumber, an enemy poses as a friendly hitchhiker, intending to drop pellets of rat poison into Harry and Lloyd's food. But before he can succeed in this, he needs first aid when his ulcer flares up (which was induced by Harry and Lloyd's own practical joking). Harry and Lloyd try to administer his emergency pills, but they mistake the pellets of poison for the ulcer medication, and feed him his own rat poison instead.
  • In Edge of Darkness, Craven gains a measure of symbolic revenge when he forces Bennett, the man who ordered the radioactive thallium poisoning of both Craven and his daughter Elle, to drink a jar filled with thallium-tainted milk.
  • In Enter the Dragon, Mr. Han dies when Bruce Lee kicks him into a spear that Han had hurled at him in the adjoining museum room during the early part of the final showdown.
  • In Ex Machina, Nathan is killed by two of his creations, one of whom he had specifically mistreated and made plans to disassemble in order to motivate her to escape, which she successfully does because he underestimated the employee he brought there to see if she could manipulate him.
  • In Face/Off, Castor Troy teaches Sean Archer's daughter Jamie a trick with a butterfly knife (stabbing and then twisting the blade). In the climax when he takes her hostage, she uses it on him once she finally figures out who is who between Caster and her father.
  • In Fantastic Beasts and Where to Find Them, magic-hating Mary-Lou Barebone abuses her adopted wizard son Clarence, forcing him to suppress his magic. Unfortunately for her (and for New York City), this results in his becoming an Obscurial, the host to an Obscurus (a manifestation of great and uncontrollable magic power), and she is killed when it finally erupts.
  • Faust: Love of the Damned: Not only is M destroyed as a result of a Faustian Rebellion, but initially it was fool-proof: as part of their contract, John Jaspers couldn't harm him. It's only because of M's greed to claim the soul of Jade's child as well that he relinquishes the original agreement and removes the leash he had on Jaspers.
  • In Firestorm (1998), Big Bad Randall Alexander Shaye is ultimately killed by the very forest fire he started in order to cover his prison break.
  • Flash Gordon. At the end Ming is impaled on the nose cone of one of his own war rockets.
  • In The Freakmaker, Prof. Nolter is killed by the one successful human/plant hybrid he manages to create.
  • Get Shorty: Bo Catlett imagines how easy it would be to kill Chili if he just had Bear loosen some of the screws on the railing of his deck, which overlooked a cliff. When the eventual showdown happens at Cat's place, he's surprised to learn Bear actually did loosen them.
  • Ghost Rider's Penance Stare allows him to burn the pain of all the people someone has hurt into that person's soul. The film's villain, a demon, has no soul and is thus immune. Near the end, he takes on the power of 1000 evil human souls to start the apocalypse, which removes his immunity and allows Ghost Rider to destroy him forever.
  • More of a "Hoist By Their Own Petard" version in G.I. Joe: The Rise of Cobra; Duke activates the tracking beacon so the Joes can find Destro's base, just like Destro did so the Baroness' strike team could find the pit.
  • In G.I. Joe: Retaliation Firefly is killed by one of his own bug bombs, courtesy of Roadblock.
  • Godzilla:
    • At the climax of GMK, Godzilla explodes after his own nuclear breath backfires and instead tears him open from the inside out. Somewhat a subverted example in that Godzilla isn't killed but instead reduced to a disembodied yet still-beating heart.
    • In Godzilla: Final Wars, Gigan battles Mothra with a host of new weapons, one of which are two razor sharp discs that launch out of his chest. When Mothra is able to dodge these, Gigan shoots lasers at Mothra before turning around to perform a victory pose. Right before the two discs from before come back around and slice his head off.
  • In La Habanera, Don Pedro has worked to cover up the outbreak of fever on Puerto Rico in order to avoid damaging commerce on the island. Unfortunately for him he falls ill of the fever. Dr. Nagel has an antitoxin that could save his life, but Don Pedro's goons busted up his lab and destroyed his antitoxin. So Don Pedro dies.
  • In Hannibal, Mason Verger is eaten by the killer pigs he had been training to eat Hannibal Lecter. There's even a bit of The Dog Bites Back added in for good measure.
    Hannibal: Hey, Cordell. Why don't you push him in? You can always say it was me.
  • In Happy Gilmore, snobby golf pro Shooter McGavin is highly offended by Happy's coarse, unprofessional attitude to golf (and the threat he poses to the attention and awards Shooter believes are rightfully his) and ends up going to all kinds of lengths to undermine or sabotage Happy. Thing is, Happy initially makes no secret of his disdain for golf and is only playing in the first place to raise some quick money, but becomes so antagonised by Shooter that he decides to add "kick Shooter's ass" to his list of things to do. Shooter ends up losing the tour to Happy, whereas if he'd just bitten his tongue and waited Happy would have likely quit well before it came to that point.
  • Harry Potter and the Deathly Hallows: Part 2 has one involving Snape. He invented Sectumsempra, a spell used for emulating the effect of a sword. Guess exactly which throat Voldemort slices with it? (In the book, Nagini is used instead.)
  • Hellboy films:
    • Kroenen dies in the first film in his own spike pit. Also, Hellboy crushed him with his own giant gear.
    • In Hell Boy II The Golden Army, Mr. Wink dies after launching his Rocket Punch into a griding machine. Hellboy even states before "I wouldn't do that" and after that happened "Whoa. Told ya."
  • In Holmes & Watson, Mrs Hudson is killed when Watson throws the bomb intended to kill Queen Victoria off the Titanic, and it lands in the rowboat they are in.
  • The film Homeward Bound: The Incredible Journey features Chance and Shadow, two dogs, swimming across a shallow part of a river. The cat named Sassy, who refuses to get wet at all, tries to cross a makeshift bridge of logs, branches, and rocks in the rapids. The branch breaks, sending Sassy into the rapids, and eventually, over a waterfall. She survives. By the end of the journey, she seems to have learned her lesson.
  • In House, the Big Bad holds Roger's freshly-rescued son hostage to try to get Roger to kill himself. Roger's desire to protect his son — which had been driving him the entire movie — overrides his fear and he charges the Big Bad... which is when Roger and the audience realize that said Big Bad spent nearly the entire movie trying to scare Roger out of his wits because he's powered by fear and can't hurt Roger now that he's no longer scared of him. Cue Oh, Crap! covered by ineffectual threats from Big Bad, followed by very short Curb-Stomp Battle.
  • In The Hunt for Red October, Captain Tupelov had all the safeties on the torpedoes aboard the Konovalov disabled after the first attempt to destroy the Red October failed when Captain Ramius turned towards the torpedo and made it impact before it could arm. Tupelov orders a second torpedo launched, but some slick maneuvering by both the Dallas and Red October gets the torpedo turned back around and locked onto the Konovalov.
    Konovalov Crewman: (Immediately after the Red October pulls off a Wronski Feint with the torpedo) Torpedo, dead ahead!
    Bonovia: You arrogant ass! You've killed us!
    (Konovalov explodes)
  • In I'm Gonna Git You Sucka, Issac Hayes' character decides to load up on guns, shoving them into every nook and cranny he can find on his person. As he heads out, he slips on some dropped bullets and he's promptly shot to death by his own guns.
  • Steve Gray the antagonist of The Incredible Burt Wonderstone is a particularly extreme example in that the heroes have nothing whatsover to do with his downfall. He instead manages to give himself permanent brain damage doing an idiotic trick (drilling into his skull live on stage.)
  • In Indiana Jones and the Last Crusade, Donovan is a wealthy and amoral American socialite obsessed with living forever even if it means shaking hands with Nazis. His words to Indy are to "not trust anyone". When he reaches the finish line, he is in a room with hundreds of grails and has no idea what the Grail might look like, so he trusts Nazi archeologist Elsa Schneider to pick the real one for him. She gives him the wrong one to dispose of him, and he dies a Nightmare Fuel death by aging centuries in a matter of seconds.
  • Inglourious Basterds: The Nazis were trapped in a theater and burned - gunned down if they tried to escape - just like they had done to Jews in synagogues. Basterds being a revenge movie, this was the entire point.
  • General fate of James Bond's adversaries. Some examples: Doctor No's metal hands made it impossible for him to climb to safety (admittedly, he would have even more of a hard time without any hands at all. On the other hand, he lost his hands from his work with nuclear reactors in the first place), Oddjob was electrocuted through his steel-bladed hat, Goldfinger was sucked out of his own depressurizing jet (also qualifies as an I Warned You, as Bond told him how dangerous firing a gun on a plane was), Mortner was blown up by his own dynamite, Trevelyan was crushed by his own evil satellite dish, Carver got shredded by his own giant drill, Renard was skewered by a rod of plutonium with which he was trying to blow up a submarine, Baron Samedi is knocked into the casket full of poisonous snakes into which he was intending to sacrifice Solitaire, etc.
    • If The Dragon in a James Bond film is not killed by being Hoist by His Own Petard, chances are he's not really dead... One notable exception is May-Day from A View to a Kill; after Zorin double-crossed her, she died while making a Heroic Sacrifice to foil his plans.
    • In Octopussy, Bond kills a knife-throwing assassin by throwing one of the knives back at him.
    • Bonus points in Diamonds Are Forever when Bond hoists Mr. Wint with his own petard by sticking it onto him and throwing him into the drink. He's blown sky-high before he hits the water. His boyfriend and partner-in-crime Mr. Kidd is the victim of a two-fer — not only was he burned alive when Tiffany Case splashed him with a claret as he approached Bond with flaming shish-kabobs, earlier in the film he had himself tried to burn Bond alive (with the assistance of Mr. Wint).
    • The Teaser in For Your Eyes Only: The unnamed Blofeld is thrown into the exact same smokestack he planned to have 007 put into. No less with the exact same helicopter.
    • In Casino Royale (2006), the terrorist who tries to blow up a plane via remote detonator, only to find that Bond clipped the bomb to his belt while they were grappling.
  • In Jesse James Meets Frankenstein's Daughter, Maria Frankenstein sends Igor to kill Juanita. However, when Igor sees Juanita pleading for her life, he remembers that she was kind to him when he was still Hank, and he manages to shake off Maria's Mind Control long enough to turn on her. Maria is still maniacally shouting "Kill! Kill!" as she realises Hank is wrapping his hands around her throat.
  • A Jolly Bad Fellow: After Villain Protagonist Bowles-Otterly murders Delia with a poisoned cigarette, the police accuse him of the crime. He lights up a cigarette from the cigarette box in the sitting room, and points out that they have no evidence. It is only after he has taken a couple of puffs that he remembers that the cigarette box had been empty. When he asks his newly returned wife about it, she says that she saw the box was empty and refilled it with the cigarettes she found in his laboratory. With a look of horror, he realises that he is smoking one of his own poisoned cigarettes.
  • The Jurassic Dead: Dr. Wojick Borge created an undead dinosaur, and tried to use it to kill the protagonists. Near the end, when he leaves his safe room, the dinosaur finds and eats him.
  • Jurassic Park:
    • Jurassic Park uses this; create prehistoric monsters and there is a good chance they'll kill you. It is played better in the book and the dinosaurs aren't created as weapons but for entertainment, but it otherwise fits the trope.
      • It especially fits for Nedry, as he turned dinosaurs loose by shutting down the fences' power to protect his escape, only to get eaten by one of them.
    • In Jurassic World, Hoskins strongly believes that the raptors will be very desirable weapons once they manage to get them under control. Owen warns him against that, saying that they're wild beasts and even he can barely control them. He ends up getting killed by one of those said "weapons" near the end.
  • Kafka's torture technician is gruesomely killed by his own device.
  • In a truly tragic example of this happening to a hero, the title character of the John Woo movie The Killer loses both of his eyes as he is fatally gunned down by Big Bad Wong Hoi, paying horribly for his accidental blinding of Jenny, the beautiful lounge singer who he was in love with, at the beginning of the movie.
  • Killer/saurus: The Corrupt Corporate Executive funded Professor Peterson's research into bioprinting so he could use it to recreate a dinosaur for use in making Human-Dinosaur hybrid Super Soldiers. When the Sargeant who accompanied him to the facility gets turned into one, his first action is killing the CEO.
  • In King of the Zombies, Dr. Sangre is killed when he loses control of his zombies and they swarm him and drive him into the fire pit.
  • Kingsman: The Secret Service:
    • Harry's attempt to spy on Valentine leads to the latter planting a tracker on the former, leading to the discovery of the tailor base and Valentine speaking and flipping Arthur to his side. Which leads to Valentine buying a bugged top-hat, thus revealing his plan. Which leads to Harry investigating the church, which gets him killed. Which leads to the Kingsmen learning Valentine's plan. Which leads to...
    • Arthur trying to kill Eggsy with a poisoned glass of brandy, Eggsy pulls a Poison Chalice Switcheroo. Also his unsuccessful co-opting of Eggsy and also enables Eggsy and Merlin to interfere with the plan by infiltrating Valentine's base and stopping it themselves.
    • The explosive chip that Valentine uses to keep his army under control is used by Merlin to wipe them out.
    • In the end, Valentine is killed by the bladed prosthetic leg of Gazelle, his most trusted henchman.
  • Knives Out: Ransom's decision to covertly hire renowned private eye Benoit Blanc in order to prove that Harlan Thrombey's death was suspicious ultimately leads to him being exposed as the villain.
  • In Labyrinth, upon ending up in a garbage dump outside the Goblin City, Sarah is distracted for a while by a mock-up of her bedroom back home, leading her to believe the adventure was all just a dream. Even after the lady from the dump barges inside, she's still content to sit and idle for a while with her dolls and toys. But the facsimile is too perfect; it also included a copy of her play, which reminded her about her mission to save Toby.
  • Rather literal in Law Abiding Citizen. Clyde is about to activate the bomb he set up in city hall. Nick tries to talk him out of it. He activates it anyway, and Nick leaves him in his cell and locks the door as Clyde realizes the bomb is now in the cell with him. He accepts having finally been outplayed and sits on the bomb as it goes off.
  • Subverted in L: change the WorLd, in that K is perfectly willing to die from the virus she created so long as it achieves her goal of ridding the world of humanity. L doesn't let her.
  • The Big Bad in Lethal Weapon 3 is an ex-cop who sells "cop killer" armor-piercing bullets. During the final confrontation, the villain tries to run Riggs down in a bulldozer while using the metal blade to shield himself in the cab, but Murtaugh loads some "cop killers" into a sub-machine gun and tosses it to Riggs, who uses them to shoot through the blade and take out the villain.
  • The Lord of the Rings
    • The director's cut of The Two Towers gives us a straight example: the dam that Ents break to flood Isengard was recently constructed by Saruman to speed up weapon production. It was also said production that made felling that many trees necessary, giving the Ents a reason to attack in the first place.
    • There's also one in The Return of the King, near the very end of it. The Ring's final defense is irresistible allure, ensuring that even if it reaches Mt. Doom's flames, the only place on Middle Earth where it can be destroyed, its bearer will bend to its will and keep it. However, this becomes its downfall when after Frodo reaches Mt. Doom and succumbs to the Ring's power, Gollum, who the Ring had possessed and brainwashed for centuries and who had followed the Hobbits all the way there, fights furiously with Frodo to get the Ring back. He wins, but their fight pushes them both over the cliff, and while Frodo manages to hang on, Gollum clings only to the ring as he falls into the lava, sealing Sauron's fate.
  • In The Mad Magician, Gallico falls victim to the crematorium he tries to feed Lt. Bruce into.
  • Marvel Cinematic Universe:
    • Nearly occurs in Iron Man, where the shrapnel that forces Tony Stark to wear his electromagnet comes from a Stark Industries missile used by terrorists. Obadiah Stane's Iron Monger suit was also reverse-engineered from the remains of Tony's first suit.
      • Stane being killed by the same device he decried as useful only for "publicity."
    • In Iron Man 2, lots of Hammeroids get blasted out of the air by fire from their own. Also defied, according to the novelisation, as Ivan Vanko specifically constructs his armour so that in case of a mishap (which incidentally doesn't happen) he won't cut himself with his whips.
    • In The Avengers, Loki's sceptre, has, unknown to Loki himself, been turned into the kill-switch for the portal spewing his army of Chitauri above Manhattan.
    • Aldritch Killian infusing Pepper with Extremis in Iron Man 3 ultimately allows her to survive the long trip down he sent her on and ultimately blow him away for good.
    • In Avengers: Infinity War, Corvus Glaive gets stabbed in the back with his own spear. For extra irony, his killer was the Vision, whom Glaive had impaled in a similar manner earlier in the movie.
    • Avengers: Endgame: Thanos meets his final demise this way. In Infinity War, Thanos had Eitri build him a device that could harness the power of the 6 infinity stones, enter the Infinity Gauntlet. Thanos then uses this weapon to wipe out half the universe and defeat all the heroes in said movie, before destroying the stones. However, after the heroes go back in time to retrieve the stones and undo his work, the final battle commences, where the gauntlet (or more specifically, a copy designed by Iron Man that mimicked the original he had made) is used to permanently defeat him and his entire army.
  • In any given Marx Brothers film, any dialogue between the two resident Pungeon Masters was likely to end with the quick-witted Chico getting the better of the exasperated Groucho by turning his own wordplay against him.
  • At one point during the mud fight from McLintock!, Katie decides to stick one of the feathers from her hat into G. W.'s rear. This causes him to swing his arms back in pain, accidentally shoving her down into the mud pool.
  • In Medium Raw: Night of the Wolf, the Wolf removes his armor, and his knife gloves, to climb into a vent and grab the girl. This allows Johnny to grab the gloves, and stab him several times, killing him.
  • In Mirror, Mirror, Snow White tricks the Queen into eating her own poisoned apple.
  • In Mission: Impossible, Jim Phelps' demise comes when his escape helicopter is blown up with explosive chewing gum that belonged to Jack Harmon, who Jim had killed earlier in the film.
  • Towards the end of Miss Pettigrew Lives for a Day, the bitchy Gold Digger fashion boutique owner Edythe comes across Miss Pettigrew and her wealthy fiance Joe having a serious conversation and accuses Miss Pettigrew of spilling the beans about Edythe's numerous affairs, which Miss Pettigrew had previously stumbled across. Except that Miss Pettigrew and Joe were actually having a conversation about World War One and gentleman's socks, and in spitefully outing Miss Pettigrew as an indigent nanny rather than a social secretary, she accidentally reveals her own adultery to Joe, who ends up ditching her for Miss Pettigrew. Whoops.
  • Lampshaded in the 1969 farce Monte Carlo Or Bust (known in the U.S. as Those Daring Young Men In Their Jaunty Jalopies). The unscrupulous Sir Cuthbert (Terry-Thomas) has several fiendish schemes backfire on him rather nastily. At one point his put-upon henchman Perkins (Eric Sykes) turns to him and says "Hoist with your own petard! Well, it serves you jolly well right."
  • The bridgekeeper in Monty Python and the Holy Grail kills anyone who can't answer his question. When Arthur answers with another question, the bridgekeeper fails to answer it, and gets killed by his own spell.
    Bridgekeeper: What is the airspeed velocity of an unladen swallow?
    King Arthur: What do you mean? An African or European swallow?
    Bridgekeeper: Huh? ...I don't know that. AAAAAAGGHHHH!!!!
  • The high priest in Monty Python's Life of Brian; after sentencing a man to death by stoning, the victim only makes the rabid crowd angrier by pleading his case, and they really want to let him have it. However, said high priest won't let them until he finishes reading the accusation, and learns the hard way what happens to someone who threatens and insults an angry mob carrying rocks.
  • In Mortal Engines, after murdering the city control crew and setting London for a collision course with the Shield Wall and then making an escape by airship, Thaddeus ends up crashing in front of London's tracts and is crushed to death.
  • Several of the antagonist fighters in Mortal Kombat are killed off by something of their own.
    • Johnny Cage kills Scorpion with a spear and shield from several of Scorpion's previous victims, with the saw-bladed shield being used to absorb a flame attack from Scorpion and then used to slice off part of his skull and set him on fire.
    • When Liu Kang is fighting Sub-Zero, Sub ends up creating an ice field that would freeze anyone who passes through it. Liu Kang finds a bucket of water (the "element which brings life") and launches the water at Sub-Zero, who is promptly impaled by the resulting large icicle that is formed and frozen to death.
    • In the final fight between Liu Kang and Shang Tsung, Shang ends up raising a set of spikes from the floor, intending to send Liu onto them. Liu turns things around and combos him right into the spikes.
  • In Muppet Treasure Island, the first step of Silver's planned mutiny is convincing First Mate Mr Arrow to leave the ship in a leaky lifeboat, causing the rest of the crew to assume he drowned. When the plan fails and Silver winds up in the brig, he escapes and flees the ship... in a lifeboat which later turns out to be incredibly leaky.
  • The Neanderthal Man: The eponymous Mad Scientist is attacked by a saber-toothed tiger created by one of his experiments, giving a sheriff's posse time to shoot him.
  • In The Naked Witch, the witch dies when she is knocked back into her open grave, and lands on top of the stake she was attempting to kill Kirska with: impaling herself.
  • No God, No Master: Some of the anarchists' bombmakers accidentally blow themselves up with live dynamite set on the table near them.
  • In the original 1960's Ocean's 11, Danny Ocean's team decides to hide the stolen cash in Bergdorf's coffin. The plan was to wait until it was shipped to San Francisco for the funeral and buried, after which they would retrieve the money. This went quite wrong when his widow, who had not been informed of this, decides to have the funeral there in Las Vegas... and the money then gets burned with him.
  • In Once Upon a Spy, Chenault and Dr. Webster defeat Valorium by reprogramming his Shrink Ray so it bounces back off the sattelite directly on to his observatory headquarters.
  • In Pacific Heights, Carter Hayes is Impaled with Extreme Prejudice on gas pipes protruding from the floor—protruding because he himself stole the appliance they were attached to.
    • Also, his own tactics are used against him by Patty; his habit of assuming the identity of his last victim is what allows Patty to send him into financial meltdown and get him arrested.
  • In The Pelican Brief, a hitman who had previously planted a car bomb rigs another car in a second attempt to kill the heroine. Luckily, when the car has engine trouble, she recognizes the sound from the previous incident and gets out of the car to flee. The villain attempts to run her down in his own car, but loses control and crashes. Ironically, the impact alone would probably have been enough to kill him, but the car he crashed into? The very one that he rigged to explode. KABOOM.
  • Subverted in Phantasm II when Mike uses one of the Tall Man's own flying spheres against him. It only makes him spurt yellow blood, and he crushes the sphere with his bare hand before throwing it away.
  • The Pink Panther:
    • In The Pink Panther Strikes Again, Former Chief Inspector Dreyfus is killed when his Bavarian castle is disintegrated by his own doomsday weapon. It was supposed to be fired at England, but Clouseau hoist himself into the castle with a conveniently placed catapult. He proceeds to land on the doomsday machine, causing it to swivel around and hit Dreyfus instead, who has his legs disintegrated. Then the doomsday device overloads and starts to dissolve the rest of the castle. The last thing we see of Dreyfus is him slowly vanishing while playing the organ that any self-respecting villain must have in his Bavarian castle hideout.
    • Dreyfus comes back in time for Revenge of the Pink Panther.
  • In Pirates of the Caribbean: At World's End, Barbossa not only cites the code at the gathering of the Brethren Court, but calls on Captain Teague to enforce it, all to avoid fighting Beckett. Jack's motion for the Court to fight won't be entertained because only the elected Pirate King can declare war, and there's no King because only the Pirate Lords can elect one and each Lord only ever votes for themselves. So Jack calls for an election, lets everyone else vote for themselves, then throws his support behind Elisabeth, who's gung-ho for bringing war on Beckett. Now Barbossa has to go to fight Beckett, since he not only cited the rule that says Elizabeth can declare war, but called on Teague as well. He's got a better chance of surviving a war than a fight with Teague.
  • Towards the end of Popeye, Bluto, who is already winning the fight against Popeye, decides to rub it in by shoving spinach down Popeye's throat note . The spinach gives Popeye the strength to win the fight.
  • In Prince Valiant (1997), Morgan le Fay tries to blow sleep dust into Princess Ilene, but Ilene sneezes, which blows the dust back at Morgan. She gets drowsy and falls to her death. Later, Ilene knocks a mook who was wielding a primitive flamethrower into a vat of oil, with predictable results.
  • In The Purge: Election Year, the pro-purge government removes a restriction protecting the upper class from the 12 hour purge in order to assasinate an anti-purge presidential candidate. Instead, the anti-purge resistance not only manages to protect the anti-purge candidate, but also kill off many high ranking members of the pro-purge party, including their presidential candidate, allowing the anti-purge candidate to become president.
    • The sequel, The Forever Purge ultimately sees the pro-purge government destroyed after they opted to reinstate the Purge and the more radical groups decided to keep going.
  • The unspoken reason for Rotti Largo's terminal illness in Repo! The Genetic Opera? Exposure to the same poison that he used to kill Marnie Wallace.
  • Reign of Fire: The male dragon is killed with an exploding magnesium crossbow bolt fired just as he's igniting his flames, which thus chars him from the inside out.
  • In Resident Evil: Afterlife, Albert Wesker escapes from the ship in a helicopter, then triggers the ship's self-destruct device, only to find that Alice found the bomb earlier and stashed it on the helicopter.
  • During the climax of Resident Evil: The Final Chapter, Dr. Issacs is Killed Off for Real by his own clone, who is himself then subsequently Devoured by the Horde of zombies he'd been bearing down on Alice but apparently forgot about due to the confrontation.
  • In Ring of Fear, psychopath Dublin O'Malley turns loose the half-wild tiger that he has been tormenting throughout the movie as his final act of vengeance on the circus as he makes his escape. He then hides in an empty boxcar on a freight train. However, lion tamer Clyde Beatty drives the tiger into the boxcar to corral it, and then shuts and locks the door. It is only as the train starts pulling out that they hear the growls of the tiger and O'Malley's screams and realise what has happened.
  • Rio Lobo: Twice in the climax. One Mook is possibly blown up by his own dynamite after being wounded as he threw it, causing it to fall short and Hendricks is badly injured by shrapnel when his gun barrel explodes due to being lodged with dirt (he was using it as a walking stick after being shot in the leg) right before he fired it.
  • Rise Of The Scarecrows: Sheriff Howard has been sending people to their deaths in the woods at the hands of a trio of killer Scary Scarecrows for years. In the end, he's ultimately killed by said killer scarecrows.
  • RoboCop:
    • RoboCop (1987): "Dick, you're FIRED!". Robocop had a fourth hidden directive that prevented him from arresting any senior member of OCP. The one who put it in there, Dick Jones, was also the guy who helped supply the guys who killed Murphy, the man who became Robocop. First time he confronts Dick, it activates, leaving Robocop helpless. The second time, Dick makes the mistake of holding the Old Man hostage, who fires Dick. The rest is history.
    • In RoboCop 2, Dr. Faxx shuts off Cain's life support and uses his brain to create Robocop 2. Later, Cain goes on a rampage when OCP unveils him, and Faxx becomes OCP's scapegoat. Cain himself is defeated when Lewis offers him a canister of his own drug Nuke, and Robocop takes advantage of the distraction to kill Cain.
  • Salvation Boulevard: Jerry tries to set Carl on fire by using a taser, which ends up instead doing that to him and the dirty cop who helped him accidentally.
  • In Satan's Cheerleaders, Patti mockingly explains to Sheriff Bubb that he ruined his own Virgin Sacrifice when he raped the cheer coach Ms. Johnson, as she was the only 'unsoiled maiden' on the team. His demonic masters are not happy with this.
  • Done with literal hoisting in Saw 3D. Bobby Dagen is a bestselling author who became famous for writing a book about how he survived a Jigsaw trap. He had to reach a high place, and the only way up there was to dig a pair of meathooks into his chest and hoist himself up. The thing is, his entire book is a load of shit. He was never in a Jigsaw trap. He made the whole thing up. Jigsaw saw fit to correct this and placed him in a series of traps, with the final one being the one he had "survived" before. It turns out to be impossible to complete in the way he described in his book, and he fails. However, astute viewers will notice that the hooks were so large he could have either tucked them under his arms or used them as footholds, and hoisted himself up rather easily that way, no self-mutilation required. In all likelihood Jigsaw probably did this on purpose just to see if Bobby was smart enough to recognize the flaws in his trap design.
  • In Scanners II: The New Order, David and Julie kill the corrupt Dr. Morse with a massive overdose of his own drug to pay him back for destroying Julie's boyfriend Walter and numerous other psychics.
  • In She-Wolf of London, Martha dies on her own knife when she falls down the stairs while chasing the maid Hannah, who heard Martha telling her plan to Phyllis, whom she has been Gaslighting throughout the film.
  • Shoot-Out at Medicine Bend: After knocking Devlin off the mezzanine, Clark has him dead to rights as he is lying on the floor stunned. Clark grabs a rifle and attempts to finish Devlin off. However, in his haste, he loads the rifle with the same defective shells he sold Devlin's brother, and which caused the brother's death. Devlin explains this as he gets up as Clark keeps jerking the trigger with nothing happening.
  • In Silver Lode, McCarty dies when a bullet he fires at Ballard ricochets off the church bell and strikes him in the heart instead.
  • Sodom and Gomorrah:
    • Hebrew traitor Melchior leads a group of saboteurs to smash the pipelines sending oil to the wall of fire Lot and the Hebrews are using to cut off the Elamites, causing the fire to go out. But the burning oil pools on the sand, and as Ishmael chases after Melchior, the latter falls into the pool of oil and burns to death.
    • During the final destruction of Sodom and Gomorrah, two children are sheltering in a doorway from the collapsing buildings. A cackling man pulls them into the street and shelters in the doorway himself. Seconds later, it collapses on top of him and kills him.
  • In Spider-Man, The Green Goblin is stabbed in the chest by his own glider after trying to use it to kill Spider-Man (he senses it, and quickly gets out of the way). This led the Goblin's son to believe Spider-Man killed his father.
  • In Spotlight, the diocese files a court motion which allows Garabedian to file an opposition brief to which he attaches all the documents the reporters have been seeking which prove Cardinal Law was aware of sexual abuse by certain priests years before and did nothing to prevent it, putting them in the public record.
  • In Stargate, the heroes are nearly hoisted by their own Nuke, which has been been augmented by Ra, and rigged so it can't be disabled. Then they send the bomb back to Ra...
  • In Stargate: The Ark of Truth IOA Agent James Marrick recreates a Replicator, hoping to use it as a weapon against the Ori, much to the dismay of SG-1. He is later consumed by the Replicators and turned into a Meat Puppet.
  • In Star Trek II: The Wrath of Khan, Khan's done in by his "superior intellect". As his right hand man Joachim pointed out, they had the Genesis Device and they could have done anything they wanted to with it. However, his thirst for revenge causes him to take every advantage he had (a spaceship in the form of the Reliant and the Genesis Device itself) and turn it against Kirk, ultimately leading to his death.
  • Star Trek: Nemesis. The Romulans create a clone of Captain Picard for a Kill and Replace gambit, only to have their tool kill and replace the Romulan Senate. So this is a case of Hoist By Their Own Picard.
  • In Star Trek Beyond, Krall is killed by the very life-absorbing device he plotted to use on the Yorktown.
  • Star Wars examples:
    • Palpatine to a degree that verges on being a Plot Hole. On a small scale, he is the one who shapes Anakin into Darth Vader, who eventually overthrows him. On a much larger scale, he is able to completely take control of the galaxy in the prequel trilogy... And then, apparently unable to quit while he's ahead, launches an unnecessary genocide upon the Jedi, thus permanently turning the few surviving Jedi against him and triggering an epic chain of events that would eventually culminate in his being overthrown (if the title "Revenge of the Sith" is any indication, he did this mainly to settle an old score between the Sith and the Jedi). While the Jedi were no fans of his even before The Purge, they weren't much of a threat to him either, particularly in light of his being supreme ruler of the Republic. This is even coyly lampshaded in the novelization of Episode III, where it's stated that the Jedi are actively searching for the Big Bad, but don't consider Palpatine a suspect because he already rules the galaxy, and thus would have literally nothing else to gain by getting up to any Sith-related shenanigans.
    • Subverted by Dooku: during their last battle he tells Anakin: "I sense great fear in you, Skywalker. You have hate, you have anger— but you don't use them"-and while Anakin immediately starts following his "advice" and beats him with ease, it was actually the whole point, as it was part of getting him to turn to the Dark Side and the only thing deviating from plan was that Dooku didn't have to throw the fight. Then Double Subverted when Palpatine orders Anakin to finish him off in cold blood and Dooku realize that by losing that fight he's no more use for his master plan.
    • Palpatine's plan to turn the Galactic Republic in The Empire required him to start the galactic scale Clone Wars against the Confederacy of Independent Systems, that he had Dooku create explicitely to justify his takeover, and then at the end of the Clone Wars he disbands the majority of the planetary security forces (local militias that under the Republic kept order in various sectors), phases out the Y-Wing bomber from the now Imperial Navy, and prevents the adoption of the high-performance R-22 interceptor. All of that would contribute to The various rebel forces that would eventually form the Alliance to Restore the Republic: former PSF weapons, ships and even uniforms, plus Y-Wings stolen from scrapyards, would form their early equipment (to the point that Alderaan, one of the few worlds to maintain a PSF, can claim they're not supporting the growing Rebellion in spite of Rebel fleet troopers being caught using the same guns and uniforms because said guns and uniforms were nearly ubiquitous among security forces), with the Y-Wing becoming a staple of the Rebellion by being just that good; after acquiring the R-22 schematics from the small neutral system that had bought them, the Alliance improved on them and created the formidable A-Wing; and many surviving Confederacy forces would end up joining them, with equipment from Separatist forces that had been destroyed or disbanded still ending up in Rebel hands.
    • Rogue One: Director Krennic spent two decades leading the construction of the Death Star in the pursuit of glory as its creator. He ends up dying on Scarif when Tarkin has the Death Star fire on the planet in a futile attempt to stop the rebels. For added karma Krennic is almost certainly hit directly by the weapon's firing beam as it aimed for the top of the communication tower where he was last seen.
  • In Stealth, a medic attempts to inject an initially unsuspecting Ben (Josh Lucas) with 'pain relief' medicine (actually poison). Ben politely refuses, but the medic's stubborn insistence clues Ben in that something is wrong and a struggle ensues. The medic ends up being stuck with the needle himself and dies, showing Ben what the medic was trying to do (not that it wasn't fairly obvious).
    • This moment in itself leads into Ben's commander being hoisted by his own petard. In trying to cover his tracks by having Ben killed and failing, his duplicity is revealed to his superiors by Ben and he is relieved of command. Then he takes a bullet rather than face court martial.
  • In the climax of Strange Days, protagonist Lenny Nero, after getting stabbed in the back by his former best friend Max, ends up clinging for dear life to balcony railing 22 stories above the streets of Los Angeles, with Max dangling from his necktie hoping to take Lenny down with him. Lenny proceeds to pull the still-stuck knife out of his back and use it to cut his tie off, sending Max plummeting to his death.
  • In Super Mario Bros., Mario and Luigi use Koopa's own de-evolution guns against him, turning him into a tyrannosaurus. Then they blast him a second time, turning him into primeval slime.
  • Sweeney Todd: The Demon Barber of Fleet Street ends with the cannibal butcher Mrs. Lovett being thrown into the oven she used to bake Sweeney's victims into pies. Sweeney himself is killed with his own razor by Toby by means of Slashed Throat, the very same method he used to murder so many people.
  • Swashbuckler: When the lute player attempts to stab Lynch In the Back, Jane trips him. He falls down the stairs and impales himself on his Wolverine Claws.
  • Tales from the Hood 2: Dumass Beach is killed by his the Robo-Patriot robot he intends to become America's police force when he detects him to be a clear and present danger to America's future.
  • Tank Girl. Kesslee has a device that drains a person's blood from their body, killing them, and purifies it into drinkable water. He uses it to kill one of his subordinates, and at the end Tank Girl uses one to kill him.
  • In Teenage Mutant Ninja Turtles (1990), Shredder has the Turtles on the ropes and, after a duel with Leonardo, defeats the leader and pretty much tells the turtles to toss their weapons or he dies. As they do, Michaelangelo's nunchaku gets tangled up in the escape ladder, which, when Splinter pulls off his Big Damn Heroes moment and sends Shredder into a Villainous Breakdown, is used to toss the Shredder into a dump truck and his first death.
  • In Teenage Mutant Ninja Turtles II: The Secret of the Ooze, Shredder drinks the mutagen, becoming the massive Super Shredder and begins tearing through the support beams of the pier he landed under. Realizing that he's going to kill everyone, Leonardo begs Shredder to stop or they'll kill them all. Shredder just lifts Leo up and tells him "Then, so be it!" and keeps going. The turtles are able to survive by diving into the ocean while Shredder ends up crushed under the rubble.
  • The Terminator series is a prime example of this trope. We created the Skynet system, and right after it comes online it tries to eradicate us by implementing an all out nuclear war.
  • In Trading Places, the Duke Brothers are the architects of their own demise. The two "guinea pigs" they choose for their 'experiment' wind up figuring out what's happening and hatching their own plot. The same former guinea pigs use the Dukes' own orange juice market plot against them. Even the hooker they got to help ruin Winthorpe's life and the butler they drafted into their plan wind up playing small roles in bringing them down. Geez, they'd have gotten off easier by just being honest businessmen.
  • In Traitor, the Deep Cover Agent protagonist Samir is unable to break his cover by giving the suicide bombers that are planning to blow up busses in the United States fake equipment. His solution? He arranged for them all to be on the same bus, so that they only managed to blow each other (and one very unfortunate bus driver) up.
  • Transformers Film Series:
    • In the first Transformers live action movie, the Decepticon Frenzy is killed by one of many CD like 'throwing stars' which he himself fired. The thing arced in mid-air and came right back at him.
    • Also in the sequel Transformers: Revenge of the Fallen, when Megatron mercilessly tried shooting Optimus with his handgun laser, Optimus managed to grab Megatron's hand and point it at Megatron's face. Megatron then opens fire, burning his face very badly and losing the fight. In the next movie, Transformers: Dark of the Moon, Megatron is dying (rotting away) from the burns despite the efforts of Scalpel-like doctors to repair it, making him the target of scar insults from Starscream. Towards the end of the film, he appears to have given up leading the Decepticon cause and waits to die while watching Cybertron be restored until Carly goads him to attack Sentinel.
  • In the movie Tucker & Dale vs. Evil, almost every single death is the result of one of these, such as the one person who is intent on killing with a spear ramming himself and said spear into the earth — while holding it. Too bad the spear was pointy on both sides.
  • In The Walking Dead (1936), Professional Killer Trigger Smith trips over a table while trying to get away from Ellman and shoots himself with his own gun.
  • Weekend at Bernie's starts this way: Bernie defrauds his own insurance company and rewards the two employees that discovered it with a weekend retreat at his place. He intends for the mob to off them; the mob offs him instead. Hilarity Ensues!
  • In Who Framed Roger Rabbit, after Judge Doom reveals himself to be a toon, he meets his end by getting sprayed with "Dip," a toon-killing cocktail of paint thinners that he himself created. (Given how often he used the stuff, without ever considering that this might happen, it might qualify as Stupid Evil.)
  • In The Whole Town's Talking, Jones' Criminal Doppelgänger, Mannion, had a plan to kill him by making the police think it was himself. But when he steps out of his hide out, and Jones returns unexpectedly, Mannion's mooks confuse him for their boss, and give Jones the opportunity to find out Mannion's plans and kill him.
  • The Wind in the Willows: Chief Weasel tries to blow up Toad Hall from the dog food factory. Rat switched the labels on some barrels labeled "bones" and "explosives" earlier on. You can probably figure out how this ends...
  • At the end of the first Wishmaster film, the Djinn defeats himself by granting a time-altering wish that, as he realizes too late, means he was never released from his prison to grant the wishes in the first place.
  • Subverted in Wishmaster 2: Evil Never Dies. When Morgana confronts the Djinn near the end, she tries to make him dispose of himself with a wish, but all her attempts prove fruitless. Wishing him out of existence is not an option because he's an eternal entity, wishing him back in the fire opal can't be done either because the prophecy can't be cheated, and wishing for all evil in the world to go away is impossible because good and evil both depend on each other. Instead she later performs the Persian sorcerer's ritual to reseal the Djinn.
  • In The Wizard of Gore, Montag summons mysterious flames that he attempts to lead Sherry and the others into Pied Piper-style, only to seemingly die when Jack pushes him into the fire.
  • X-Men Film Series
    • In X2: X-Men United, Stryker's mutant-killing machine is ultimately turned on humans instead, which naturally includes Stryker himself. It gets shut off before it can do the job, of course, but it was long enough to make sure Stryker never escaped.
    • In The Wolverine, had the Big Bad not have told Wolverine how to properly hold a Japanese sword all those years ago, he'd still be around to mock him for it.
    • In X-Men: Days of Future Past, Trask is seen handing out plans to his new Sentinel units to the foreign powers at the summit in Paris. This turns out to be a major mistake on his part, as he gets arrested for selling military secrets to other countries in the new timeline, once the President apparently has a chance to take a better look at the activities he's been getting up to in the name of advancing his work...
    • In X-Men: Apocalypse, trying to do multiple master plans at once ends up causing Apocalypse's downfall. An empowered Magneto focused on guarding him rather than wrecking the planet would make short work of the mostly adolescent X-men. And if he wasn't too eager to put himself out of action in order to conquer the world by assimilating Xavier's powers in transfer and making everyone his puppet he's more than strong enough to beat anyone else who would interfere with Magneto.
  • In xXx, the chain-smoking Dragon dies when a heat-seeking rocket is attracted to his cigarette.

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