Grayson is the Terlawk boy genius and head of the Earthworm Jim Fan Club. He is a friend of Jim and Peter. He made his only appearance once in the animated series episode, "Upholstered Peril". He is voiced by John Kassir, the same actor who did Buster Bunny on Tiny Toon Adventures.
Grayson has a blond mullet hairstyle. Big eyes with black irises. Two big top teeth showing from out of his mouth. Orange shirt under a vest, Blue shirts and pair of loafers on his feet. Notice that his gadgets (ever been used for anything) on him are the two wristbands and some device hanging on his chest.