Professor Heathormen is a black-furred monkey who wears a pair of spectacles and a white lab coat. He studies insects on Mount Cheeseopolitan Island, lives in a hut and drives a hovercraft when he goes out to sea. Reader Rabbit, Sam the Lion, Paige and Chester meet him in Reader Rabbit 2nd Grade: Mis-cheese-ious Dreamship Adventures! when they are stranded by the Pirats.