Oliver has knee-length white hair that is tied into a ponytail with a black bow. He has two black horns and a red circled A+ mark on the right side of his hair. His outfit consists of a black uniform with stripes on his short sleeves and the bottom of his shirt, and a diamond-shaped symbol with a line. His left arm sports a black armband, and his right arm is replaced with a medium-sized pencil. He wears white socks and black boots with white shorts. He is described to be a bully.