Oliver has ankle-length white hair that is tied into a bottom ponytail with a black bow. He has black horns. Additionally, his right arm is replaced with a pencil. His outfit consists of a black collared shirt with white stripes on the sleeves and hems, along with a rhombus with a slash in the centre of his shirt. His attire is finished with white knee high socks, black boots with white shorts, accessorised with a watch on his left arm.