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Sibling Murder

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Killing a sibling may not have quite the negative implications of Patricide and Matricide, but it's still traditionally seen as worse than killing someone you're not related to.

This can result from a Cain and Abel situation, but that's not required. Accidental deaths, mercy kills and the like can also fit under this trope. In those situations, this can overlap with Kill the Ones You Love.

A subtrope of Murder in the Family. May be the outcome of a Princeling Rivalry or Annoying Younger Sibling.


Adoptive siblings and half-siblings also qualify for this trope. "Brothers" or "Sisters" in a religious or martial order don't, as those terms are being used as a standard honorific (on the same line as "Mister" or "Madame") instead of describing relationship.

Killing a brother is technically known as "fratricide", and killing a sister is "sororicide", but many people use fratricide to refer to both.

As a Death Trope, spoilers are unmarked.



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    Anime and Manga 
  • Akame ga Kill!:
    • This is one of the goals of the titular Akame, who has sworn to kill her sister. This is subverted, however, when Kurome makes a Heel–Face Turn.
    • It's played straight in the anime, however, when Kurome chooses to meet her end in her final duel against her sister. She is impaled upon Akame's katana, Murasame in the ensuing fight, despite the intervention of Kurome's Love Interest, Wave.
  • In Code Geass, Lelouch does this twice, reacting badly to it each time:
    • The first major blow Lelouch deals to the Britannian Empire actually involves fratricide: he murders his own half-brother Prince Clovis, the current governor of Area 11 in episode 2.
    • After accidentally using his Geass abilities to send his half-sister Euphemia into a murderous rampage, the only way to stop her was to kill her.
  • Fullmetal Alchemist:
    • Near the end of the first series, Envy kills his half-brother Edward. The reason Ed was impaled was because he was so shocked by the reveal that the villainous Envy was his brother that he froze up and left an opening. He is later revived.
    • In the manga and second series, Pride horrifies even his enemies when he eats his younger brother Gluttony, his own ally, to regain the advantage in the fight they are losing. Note that he does this in front of Edward (the personification of Big Brother Instinct) and Greed (another one of his and Gluttony's brothers).
  • In Juuni Taisen, Boar's backstory shows that she killed her little sister in order to participate in the Zodiac War. The anime adaptation turns up the cruelty, where she bullies her into insanity by making killing others the only thing on her mind, then passes her a knife when her sister's been isolated from the rest of the family.
  • It is Sasuke's goal for most of Naruto to kill his older brother Itachi for murdering the rest of their clan. He doesn't technically succeed. Itachi dies while fighting Sasuke but not directly due to him.
  • Strider: Hiryu was forced to do this to his sister Mariya after she went insane and started murdering other Striders. He tried to talk her out of fighting, but being unable to, was finally forced to fight back and pierce her through with his Cypher. This would weight heavily on his mind afterwards, eventually leading to him leaving the Striders.
  • The anime of Shaman King has Yoh killing his brother Hao in the final version. However, Hao was hellbent on capturing the King of Spirits so he and his followers could eradicate the human race to create a kingdom for shaman only, so this is somewhat justified.
  • In Kemono Jihen, Kabane does this in Shiki's place after Shiki's uncle sics the grotesque, monstrous children of Shiki's mother with other Kemono on them, fulfilling Shiki's plead for help by killing them all.

     Comic Books 

    Fan Works 
  • The Big Bad of the My Little Pony: Friendship Is Magic fic Princess Trixie Sparkle is Celestia's and Luna's older sister who wants revenge on Celestia. Her goal is to kill Celestia.
  • Aksel attempts to poison his brother in the Frozen fic In Pain And Blood. He fails when it's noticed that his father died in a suspiciously similar fashion a few years prior.
  • In Frost Killing Hour, Elsa accidentally freezes her younger brother Jack to death when her ice powers get out of control.
  • In To Belong, Prince Charming ran away from home because he murdered his fiancee Belle and his older brother John. It is thought that he killed them in a drunken stupor, but it's implied that something forced him to kill them.
  • Blood! Rusty AU: Rusty and Scourge force Socks and Ruby, their half-siblings and full-blooded siblings respectively, to jump into sewer waters. It's a moment that signifies that Rusty is becoming more cold-blood and desensitized.

    Film — Animation 
  • Elsa from Frozen nearly accidentally killed her sister as a child. They were playing with Elsa's ice powers when Elsa slipped and hit Anna on the head. Anna was saved by trolls but afterwards their parents separated the sisters. Years later this occurs again when Elsa accidentally freezes Anna's heart during a panic attack. Anna turns to ice in the climax but is revived through The Power of Love.
  • The Lion King:
    • Scar is a big time contender for this in The Lion King, having killed his brother Mufasa to take over the Pridelands. He even made his nephew Simba believe he killed his father and let him run away, though Simba didn't end up dying like expected and came back after a Time Skip.
    • In the book A Tale Of Two Brothers, it's revealed that Scar (then known as "Taka") tried to kill Mufasa as an adolescent. Taka himself ended up getting injured by the buffalo, which is why he has a scar.
    • The tie-in animated series The Lion Guard reveals that Scar was bestowed with the Roar of the Elders when he headed-up the Lion Guard during Mufasa's rule. But when his Lion Guard refused to help him in overthrowing Mufasa, Scar used the roar to destroy them. But as the Roar was never meant to be used for evil, the Great Kings of the Past depowered him of it.

    Film — Live Action 
  • Stardust mixes this with Deadly Decadent Court. As the king lays dying he notes that three of his sons still live, commenting that he'd killed all his own siblings before his father even fell ill. Moments later ones of his sons, Secundus, is pushed out of the tower by one of the other sons (Septimus, if I recall), and joins his other brothers, who's ghosts show signs of the various ways they were murdered.
  • First invoked, then subverted, in Zombieland. Wichita asks Tallahassee and Columbus to perform a Mercy Kill on her infected sister, Little Rock, then stops them and insists that she be the one to do the deed. She then promptly turns the gun on the two men so that she and her NOT-infected sister can steal their weapons and vehicle.
  • Subverted at the end of Pan's Labyrinth. Ofelia is asked to kill her baby brother to prove herself as a princess of another world. She refuses to do so. Soon, she's killed... and then she's spirited away to her real home anyway.
  • The Cable Guy: A Running Gag on the background of the plot is the trial of Former Child Star Stan Sweet, who murdered his twin brother Sam in cold blood (after they went their different ways, Stan into a life of crime and debauchery and Sam entering a cult). The events of the film end up disrupting the live transmission of the trial's verdict, and thus (at least for the audience) it will forever remain unknown.
  • What Ever Happened to Baby Jane?:
    • The twist is that Blanche crippled herself when she attempted to run over her sister Jane. Throughout the film both the audience and Jane herself thought that Jane had tried to kill her sister in a jealous, drunken rage. In reality Blanche was mad at Jane, tried to kill her, but Jane moved out of the way and Blanche broke her spine instead.
    • It's possible this occurred at the end. Blanche is dying due to dehydration and starvation brought on by Jane's Villainous Breakdown. The police find her at the end but it isn't specified if they were too late or not.
  • In Alice, Sweet Alice, the Enfant Terrible Alice is accused of murdering her younger sister Karen. Subverted when it turns out that Alice was a Red Herring.
  • It's revealed near the end of Wonder Woman (2017) that Diana is Zeus' daughter. This means that the Big Bad of the film, Ares, is her half-brother. Diana ends up killing him in the end.
  • Nine Dead: One of Leon's past sins is the murder of his own brother. They were both criminals, one was just trying to backstab the other.
  • In Chicago, Velma Kelly kills her sister for having an affair with her husband.
  • Both "the Big One" raptor in Jurassic Park and the I. rex in Jurassic World ate the siblings they were recluded with first.
  • In Sleepy Hollow (1999), two little girls are first seen in identical dresses during the flashback sequence leading to the Hessian's death. They are later revealed to be Lady Van Tassel and her sister, the crone in the Western Woods.
    Lady Van Tassel: Oh, my sister, by the way, sadly passed away. Quite recently.
    Katrina: You killed your own sister?
    Lady Van Tassel: She brought this on herself... (to a creeping young Masbath) by helping you and your master!
  • In The Good Son, Henry had drowned his baby brother in the bath just because he had Henry's rubber duck. He later attempts to kill his sister by throwing her onto thin ice. She is saved from drowning, but ends up in the hospital.
  • SHAZAM! (2019): The antagonist Dr. Sivana throws his Big Brother Bully out of a window. In the same scene, he lets his father be eaten by the Seven Deadly Sins.
  • Julia X: When Jessica goes fully Axe-Crazy, she stabs her sister Julia to death, because she has decided that it is her 'turn' now and she needs to take Julia's place.

  • The Belgariad: Inheritance in the Murgo court is oldest surviving son gets everything. Urvon used to have lots of brothers and half-brothers, but when we meet him he's an only child.
  • The Chronicles of Ancient Darkness: The father of Torak is killed by a demon-possessed bear in Wolf Brother. It turns out in Spirit Walker that the bear was created specifically to kill Torak's father by his brother Tenris.
  • Star Wars Legends: Jaina Solo has to kill her twin brother Jacen when he becomes Sith Lord Darth Caedus. Granted, he does hesitate momentarily during their battle to save someone else's life by warning them of something, but Jaina still has to kill him. The only upside is that she thinks she felt him die as Jacen, rather than Caedus, through their Force twin bond, and it gives hope that he might have been redeemed at the last minute. She takes it really hard, as Han and Leia find her cradling his body and sobbing when they arrive.
  • In The Magician's Nephew, Jadis casts a forbidden spell to kill her unnamed younger sister (along with everything else in her universe) at the end of a civil war and prevent her from becoming Empress.
  • Subverted in Survivor Dogs. Blade tries to force Storm and her litter-brother Fang into a fight to the death, however Storm refuses to kill Fang.
  • In the final book of The Spirit Thief, Benehime kills her brother and steals his power so that there'd be no-one left able to oppose her plans to kill the world.
  • Warrior Cats: Scourge is Firestar's Ax-Crazy half-brother. He was responsible for taking Firestar's first life and attempted to kill Cloudtail, who is Firestar's nephew and thus is also his own kin. Firestar saves Cloudtail by biting Scourge's neck, killing him.
  • Subverted in Wings of Fire. Peril was told that she killed her twin sibling prior to hatching. In reality, her mother was forced to kill one dragonet to save the other. Burn then proceeded to double-cross her and try to kill Peril, however she ultimately she let Peril live.
  • The Bridge Kingdom Archives: this is what Lara seems to be doing at the beginning of the book and what her sister Marylyn tries to do near the end (but is killed by Lara instead).
  • In Animorphs, this is attempted three times, only the last of which is successful:
    • Esplin 9466 the Greater (aka Visser Three) attempts to kill his own twin, Esplin 9466 the Lesser, out of jealousy. The latter's fate is left unknown, but at the time the Animorphs meet him, the Visser is wholly unsuccessful, despite cutting his brother off from the Kandrona.
    • Then, we meet Arbat, brother to Alloran (aka Visser Three's host). It's unknown how much he actually meant his assassination mission of killing the Visser - as his real mission was something else - but he was also unsuccessful. Had he been successful, his brother would have died along with Esplin.
    • Finally we have Tom, Jake's brother, an involuntary controller. When the Yeerk in Tom's head becomes too high-ranking and dangerous, Jake sends his cousin Rachel on a suicide mission to murder Tom/the Yeerk in his head. Both Rachel and Tom die.

    Live Action Television 
  • In The Borgias, Cesare kills his younger brother Juan, after Juan has brought a humiliating defeat onto the family. Lucrezia also tries to kill Juan earlier (for threatening her baby) but her attempt doesn't succeed.
  • Doctor Who: In "Demons of the Punjab", Hindu fanatic Manish, although not pulling the trigger himself, does everything else to arrange his brother's death for daring to marry a Muslim woman.
  • House: One episode featured a teenage patient-of-the-week who had run away from home and was supporting herself. Her Dark Secret is that she accidentally killed her brother. By the end of the episode she's reunited with her parents, who had already lost one child too many.
  • Law & Order: In one episode, a boy is forced to murder his brother by his possessive, controlling mother when the state was planning on taking him from her.
  • In Lucifer, the titular character is forced to kill his brother Uriel with Azrael's blade (it eradicates a being's soul, without sending it to Hell or Heaven), in order to save Chloe and Mother. For the following episode, he tries to come to terms with killing his own brother and acts out, even putting himself in front of a sniper (while near to Chloe, which would render him mortal) to be punished.
  • Subverted in Riverdale. Everyone believes Jason was murdered by his twin Cheryl, however Cheryl didn't kill him. Their father did.


    Mythology & Religion 

  • In Hamlet, Claudius killed his brother, married his wife, and became king, setting up the main plot which has said brother's son, the title character, seeking revenge for him.
  • In King Lear, Goneril poisons her sister Regan because she saw her as competition for Edmund.

    Video Games 
  • In Age of Empires II, Attila the Hun must kill his brother, Bleda, to take control of the Huns in the first scenario of his campaign. The goal is for either Attila to directly attack Bleda, or allow the Iron Boar to do the job. If the boar is killed first, Bleda will then turn against Attila and try to kill him.
  • Fire Emblem:
    • Fire Emblem: Shadow Dragon: Princess Minerva wants to be the one to kill her brother Michalis, an enemy of the protagonist's group:
    Minerva: I love him enough to spare him death on some stranger's sword, do you see? Let him be punished by my hands.
    • Fire Emblem Fates has a protagonist who's a Child of Two Worlds, with an adoptive family in Nohr and a birth one in Hoshido that turns out to be adoptive too. Choosing one family will pit him/her against the other and will bring a huge chance of this taking place. The only fully inavoidable instance of this is Xander's Accidental Murder of his half-sister Elise in Birthright, when she tries to protect the Avatar with an Heroic Sacrifice; while Xander himself and Possessed!Takumi from Conquest can be put down by the Avatar, he/she is not absolutely required to do so, though the gameplay will heavily favor it. As for Ryoma, when he realized the Avatar was hestiant to kill him, and knowing the Avatar him/herself might die if he/she refuses, Ryoma commits Seppuku to spare the Avatar that burden.
  • In Kingdom Hearts: Birth by Sleep, after Cinderella is freed from their tyranny, her evil stepsisters summon an Unversed called the Cursed Coach to murder her out of hatred. The attempt backfires, and they are killed by one of its bombs instead.
  • The Overwatch short "Dragons" short tells the story of Hanzo, who was ordered to straighten out his wayward brother Genji but was forced to kill him, which led to Hanzo abandoning his clan in disillusionment. At the end, the ninja assassin he fights against turns out to be the brother he thought he had killed all those years ago.
  • Resident Evil 6: Helena is forced to kill her younger sister Deborah, who's been infected by the C-virus.

    Visual Novels 
  • Danganronpa: Trigger Happy Havoc: We learn in the final chapter that The Mastermind was sisters with one of the participants, and executed her on a whim simply For the Evulz.
  • Higurashi: When They Cry: Shion is prone to this in different arcs. Her twin sister Mion is the next in line to be the head of their yakuza clan, though in reality Shion is the heir. Years ago they switched places but couldn't switch back when Mion (Shion by birth) was given a tattoo. Shion also blames her family for murdering her missing crush. (In reality Satoshi is actually alive but is in a coma.) In Meakashi and Watagashi Shion goes on a murder spree which includes putting Mion in a cage and forcing her to hear as she killed their grandmother, her crush's little sister, and several other people. She even attempts to kill (and in the anime attempt to rape) Mion's crush Keiichi. At the end of both arcs she kills Mion and pretends to be her afterwards. Shion stabs Keiichi (though he survives) but later kills herself when the reality of her actions finally washes over her. Despite Shion's behavior in those infamous arcs, Shion and Mion get along very well in most worlds.
  • Umineko: When They Cry: We have the 4 children of the Ushiromiya householder in such an extreme situation of Sibling Rivalry to reach and overtake the Cain and Abel trope. In particular Eva (and Eva-Beatrice) and Rudolf are the most inclined to enter this trope.
  • Liar Liar 2:
    • One of the Bad Ends has Minami stabbing her older sister, to avenge her boyfriend who Yukari killed in the previous game. Minami plans on turning herself in afterwards but wanted revenge. It's one of the few Tear Jerker scenes in the series, as Yukari confesses she killed Minami's boyfriend (and her ex) to protect her from dating a two-timing jerk. Yukari is normally sadistic and Ax-Crazy but loves Minami and is content to die if it makes her happy.
    • The game's ending comes in three forms: In the Normal End, Minami does a Wounded Gazelle Gambit and tries to kill Yukari but Yukari kills her instead. The Bad End variant has Yukari not protecting herself, causing Minami to kill her. The Good End has Yukari's girlfriend kill Minami to protect her, however Yukari gets upset that Miho killed her sister and kills her.
  • In Long Live the Queen, although Elodie is an only child herself, she is close with her cousin Charlotte. However, in a playthrough where Elodie is played cruelly, unlocks her Lumen powers and uses them to accidentally summon a kraken in the process of destroying an enemy fleet at sea, and learns about Charlotte's latent powers as a Lumen herself, it's possible for her to arrange for Charlotte to be sacrificed to the kraken to appease it, as the only means of subduing it are either a monthly ritual spell for seven years, or the sacrifice of a young Lumen girl as tribute.

    Web Video 
  • My Dad's Tapes: Uncle Don was responsible for the father's death, not for any malicious reasons, but all a part of their plan to keep balance in the world.

    Western Animation 

Alternative Title(s): Fratricide, Sororicide, Siblicide


Example of: