Nagumo is a tall man with short black hair and large, dark eyes. He is seen wearing a polo shirt with a large trench coat as well as black pants and formal shoes.[2] He also carries a briefcase around on his back, which in it contains his signature, large, swiss army knife-like weapon.[8] Tattoos Nagumo has many tattoos, most of which are hidden by his clothing. His tattoos have mathematical inspirations, in particular, referencing the Golden Ratio.