Genocide Jack is a fictional character from the video game series Danganronpa. He is known for his sadistic personality and is a serial killer who takes pleasure in murdering his victims in gruesome ways. His character is often associated with themes of despair and chaos, reflecting the darker aspects of human nature. In the game, Genocide Jack is also known as Genocide Jill, a persona adopted by the character Jill who has a split personality. This duality adds complexity to her character, as she oscillates between being a cheerful girl and a ruthless killer. The character serves as a commentary on the impact of trauma and the fragility of the human psyche.