Silly is a large red dinosaur resembling a Tyrannosaurus Rex. His body is covered with lighter red spots. His belly is striped and has a pale blue color. His eyes are crossed eyed and have purple irises. His tongue is purple and is very long, with it always sticking out his mouth. He has short arms with three fingers on each hand and two legs with three toes on each foot. He has a long tail that also has spots on it.