
Genocide Jack, known as Genocider Syo (ジェノサイダー翔 Jenosaidā Shō) in the original Japanese version, is one of the characters featured in Danganronpa: Trigger Happy Havoc.
Genocide Jack has the title Ultimate Murderous Fiend (超高校級の「殺人鬼」chō kōkō kyū no “satsujinki” lit. Super High School Level Murderer). She is Toko Fukawa's murderous and sadistic alternate personality. She also once referred to herself as Genocide Jill as a joke, making a nod to her true gender.
Genocide Jack also appears in Danganronpa Another Episode: Ultra Despair Girls as a second playable character in order to aid Komaru Naegi's adventure.
She returns in Danganronpa 3: The End of Hope's Peak Academy.