Oliver: He has knee-length white hair that is tied into a low ponytail with a black bow. He has two black horns and a red circled "A+" mark on the right side of his hair. He also has a large split ahoge atop his head. His right arm is a pencil instead.
Zip: Her hair is two-toned, with the left side being black and the right being white. The longer part of her hair is tied into a low ponytail. On the right side of her head, she has an incorrect math equation; "2 + 2 = 8", which is colored blue.