Nagumo is a tall man with black hair and large, dark eyes. He is mostly seen wearing a polo with a large trench coat as well as black slacks and formal shoes and has tattoos on his neck, arms, and legs. He carries a long briefcase around his back in which it contains his signature, large, Swiss Army knife-like weapon. Nagumo is a pro assassin and he always has a smile on his face, he also has the ability to disguise himself to look exactly like someone else and can also change others appearance.