Basic Trope: A Sibling Rivalry turns violent as one sibling becomes hell-bent on murdering the other.
- Straight: Bob wants to murder his brother, Charles.
- Exaggerated:
- Bob has fifteen siblings, he plots to kill every single one of them.
- Most of the work's characters feels murderous hatred towards at least one sibling.
- Charles is practically a saint and Bob wishing to hurt him (let alone murder him, and never mind actually doing the deed) is treated by the narrative as a Moral Event Horizon crossing bigger than the entire blood-stained career of every tyrant in history (especially Adolf Hitler).
- Downplayed:
- Bob hires a hitman to kill Charles.
- Bob intentionally injures Charles, but not fatally.
- Bob and Charles are half-brothers.
- Justified:
- Bob and Charles never really liked each other.
- Bob is angry and jealous about the fact that his parents have always prefered Charles over him.
- Bob knows that Charles is dangerous to society.
- Bob considers Charles annoying.
- Charles tried to kill Bob, so he acted in self defense.
- Bob thinks Charles dishonored the family and deserves death.
- Inverted:
- Bob saves Charles from a murderer.
- Bob resurrects Charles from the dead.
- Thicker Than Water
- Subverted:
- Charles suffers a Disney Death at Bob's hands.
- Bob thinks he's killed Charles, but it turns out that "Charles" was just a dummy planted by the real Charles in order to fool Bob.
- Charles was murdered, and the police suspect Bob at first, but they later figure out that he's innocent.
- Double Subverted:
- Later on, Bob kills Charles for real.
- Bob realizes his mistake and kills the real Charles.
- The real culprit was their previously-unseen sister, Alice.
- Parodied: Bob does a musical number about killing Charles, and vice versa.
- Zig Zagged: Bob kills Charles, and later saves Alice's life.
- Averted: No one attempts to kill or injure a sibling.
- Enforced:
- "The plot requires Charles to die, but how should we kill him off?" "We know he has a brother who never liked him. Let's have his brother kill him."
- Bible Stories has reached Genesis 4:1-18 and isn't skipping it.
- Lampshaded:
- "Why do want to kill Charles? Sibling Rivalry?" "No, I just feel like it. That's all."
- "I need today off. There's about to be a death in the family." "Wait, how do you know that?" "...Do you not know what a one-liner is?"
- Invoked:
- Bob decides to kill his brother just for kicks.
- Bob is the only person who knows that Charles is plotting world domination, and no one believes him. He believes the only solution is to kill Charles, and in order to avoid getting caught, he attempts to make it look like either suicide or an accident.
- Exploited:
- Bob's parents are villains who want to get rid of Charles for opposing them, so they manipulate Bob into killing him by feeding him lies about his good-hearted brother.
- On the other hand, Bob is The Unfavorite who desperately wants his parents' approval, so his parents give him the task of killing Charles, who Bob hated for being the favored child, knowing that Bob would mostly like fail and either incriminate himself or die at Charles' hands.
- Defied:
- Charles suspects that Bob is out to get him, and flees the country.
- Bob refuses to kill Charles.
- Alice intervenes and forces Bob and Charlie to settle their differences in a manner that doesn't involve fratricide.
- Discussed: "I didn't kill Charles. Why does everyone always suspect the victim's siblings?"
- Conversed: "What did I miss?" "Not much. Bob just killed his brother."
- Deconstructed: When Charles is found dead, Bob's previous and repeated outspoken hatred of Charles and his wish to kill him means he is quickly found out and arrested.
- Reconstructed: Bob comes up with an alibi in advance, and destroys any surveillance cameras that are present. The key piece of evidence, a hair, is DNA tested, and though to be Charles's. It's actually Bob's, but him and Charles are identical twins.
- Played For Laughs: The police overlook some seemingly obvious evidence that Bob murdered Charles. Bob publicly boasts about his successful murder scheme, and still doesn't get arrested.
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