Tanaka has a slender physique with short, fluffy dark-brown hair. The left and right side of his bangs are swept toward his ears, though the middle falls between his eyes. His black-colored eyes often appear to be dull. He is usually seen wearing an apathetic expression. His casual wear is simple jeans with a t-shirt or hoodie. Due to his indifference towards everything, it can be assumed that his choices in clothing are arbitrary at best and lazily thrown together otherwise.