Physical Features: Toko is a young woman of average height with a thin figure and somewhat broad shoulders. She has long, dark purple hair (usually in two braids), grey eyes, and wears large, round, wire-rimmed glasses. A small mole is located on the left side of her chin. Attire: She wears a typical dark purple Japanese sailor-style school uniform, notable for its very long skirt. Key Detail: Under her skirt, she keeps her alternative personality's weapon, "Geno-Scissors," attached to her thighs. Changes: In Ultra Despair Girls, she wears her hair down with several hair clips. Personality Socially Awkward & Paranoid: Due to severe bullying in her past, Toko is highly suspicious of others, often assuming they think poorly of her. She frequently engages in self-deprecating, fearful, or defensive behavior. Obsessive & Romantic: She holds an intense, unhealthy obsession with Byakuya Togami, viewing him as her "master" and an ideal romantic partner, often acting as a stalkerish fan girl. The "Ultimate Writing Prodigy": Despite her quirks, she is highly intelligent and, as a novelist, possesses a vivid, albeit twisted, imagination. Genocide Jack (Split Personality): When she sneezes, faints, or is tasered, she switches to a violent, bombastic, and outgoing serial killer persona known as Genocide Jack (or Syo). Character Arc: Throughout the series, particularly in Ultra Despair Girls, she develops from a cowardly, isolated person into a more protective, loyal friend to Komaru Naegi. Common Traits Stuttering: She often stutters when she speaks. Fear of Blood: Ironically, for her alter-ego, Toko has a phobia of blood and will faint at the sight of it. Dirty Mind: She is known to have a "dirty mind".

Genocide Jack (or Genocider Syo/Sho) is the murderous, sadistic alternate personality of Toko Fukawa, the "Ultimate Writing Prodigy," from the Danganronpa video game series, holding the title of "Ultimate Murderous Fiend". She is a loud, energetic, and violent serial killer who uses scissors, often targeting men she finds attractive, and switches with Toko through sneezing or fainting. While initially a villain in Danganronpa: Trigger Happy Havoc, she evolves to become a heroic, albeit chaotic, ally in the spinoff Ultra Despair Girls and later games, helping to defeat villains and protect her friends. Key characteristics Identity: A split personality of Toko Fukawa, who suffers from Dissociative Identity Disorder (DID). Title: Ultimate Murderous Fiend (or Ultimate Murderous Fiend). Appearance: A punk-rock-inspired look, often with pigtails, and uses large scissors as her weapon like toko but her eyes are red and her tongue is out. Personality: Boisterous, sadistic, and prone to dark humor, contrasting sharply with Toko's shy and cynical nature. Modus Operandi: Kills men she finds cute by crucifying them with scissors, though she doesn't commit genocide. Switching: Switches with Toko when she sneezes, faints, or is tased.