Oliver's appearance: White skin like most students, white knee-length hair that is tied into a bottom ponytail with a back bow, two small black horns, a red circled A+ on the right side of his hair, and bottom part of left arm replaced by a pencil. Zip's appearance: Two-toned hair left is black right is white, small lower and white ponytail, right side of hair has a blue 2+2=8, has a white poncho with three drawings on it, and a tail similar to a pop-culture dinosaur tail.