Mori had straight, shoulder-length, black hair that’s slicked back, his eyes a amethyst colour. He wears a sharp suit, consisting of a white button-up, a black suit jacket, black shoes, and black trousers. A purple tie. Over this, he wears a black trench coat and long maroon scarf hanging over his shoulders untied and white gloves. His intelligence allows him to manipulate and abuse many people. He respects Dazai as his subordinate, not a person.