A 179cm male student with dark brown hair, a prominent cowlick, and a plain outfit consisting of a white short-sleeved dress shirt and a green tie. Standing at 179cm and weighing 67kg with a 91cm chest, he has a sturdy build that isn't very apparent under his clothes. His birthday is January 1st, and his blood type is A. He likes kusamochi and dislikes sakura mochi. He does not use polite honorifics and addresses others by their names. A student of Hope's Peak Academy. He has admired Hope's Peak Academy since childhood, to the point where he describes his feelings as being like a boy who loves soccer looking up to a professional team. However, due to amnesia of unknown causes, he cannot remember the Ultimate talent for which he was recognized by Hope's Peak Academy. Because of this, he feels constant internal anxiety and dissatisfaction with the current situation, but he tries to enjoy life, resigning himself to the thought that he is the only strange one. Rather than unconditionally protecting others, he shows a sharp attitude depending on the situation. He has considerable mental strength and always pulls himself together, doing his best to navigate the situation in order to survive.

A teddy bear with a protruding belly, featuring a perfectly asymmetrical design with a white left side and a black right side. His signature laugh is "Upupu!" As the headmaster of Hope's Peak Academy, he enforces absolute rules, but he cleverly avoids or denies situations that are disadvantageous or annoying to him. He leads the Killing School Trip, forcing students to suspect and kill each other, and finds the greatest pleasure in the pain and despair of others. He cracks jokes or makes lighthearted remarks even in serious situations, and he is unpredictable, getting angry easily and then cooling off just as quickly.