Roscoe is one of only two quadrupedal Fat Dragons, his plush posed laying on its stomach instead of sitting up like most of the others. He is also the only one to lack external ears and to have a horn on his nose, giving him a distinctly dinosaur-like look. He also lacks the underbelly scales that other Fat Dragons have, contrary to the art from the 2002 Peponi website shows. Additionally, the pads on his feet are magenta rather than the cream color shown in these illustrations.
Roscoe's largest plush size is 24" long. His personality, skills and interests remain unknown.