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 chest circumference of 91cm, he has a sturdy build that isn't very noticeable under his clothes. His birthday is January 1st, and his blood type is A. He likes kusa mochi but dislikes sakura mochi. He does not use formal speech and addresses others by their names. A student of Hope's Peak Academy. He has admired Hope's Peak Academy since childhood, describing his feelings as being on the same level as a boy who loves soccer looking up to a professional team. However, due to amnesia of unknown cause, he cannot remember the Ultimate talent he was recognized for at Hope's Peak Academy. Because of this, he feels constant internal anxiety and dissatisfaction with the current situation, but he tries to enjoy life while resigning himself to the idea that he is the only strange one. Rather than unconditionally protecting others, he shows a sharp attitude depending on the situation. He possesses strong mental fortitude and always pulls himself together, putting all his effort into navigating the situation to survive.

A stuffed bear with a protruding belly, featuring a perfect half-and-half 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 craftily bypasses or denies situations that are disadvantageous or bothersome to him. He leads the Killing School Trip, forcing students to suspect and kill one another, finding the ultimate joy in the pain and despair of others. He cracks jokes or makes lighthearted remarks even in serious situations, showing an unpredictable personality where he gets angry easily and cools off just as quickly.