Gaku is a tall young man in either his late teens or early twenties. He has bluish grey hair styled in a slick back manner as well red eyes, He wears a pair of black square-shaped earrings, a high-collared navy blue jacket with yellow buttons that loosely falls around his muscular body that's is covered in multiple scars with the sleeves rolled up, bandaged hands, navy blue baggy pants and white sneakers. He can often be seen carrying a cube-headed mace covered in wrappings over his shoulder.