Koko has a lean build and tall stature. He appears to have brown almond-shaped eyes. He has thin arch eyebrows, ovular ears, and fair skin. Kokonoi grows his hair to shoulder-length and dyes it white while still maintaining his unique parted hairstyle from his teenage years. He wears a different set of dangling earrings on his right ear and has the Bonten logo tattooed on the left side of his head. Koko sees the world as a series of calculations. Obsessed with money.