Prince Dingus was Patrick Star, Gary the Snail, and Sam Star's great granduncle.
He was light green with a brown fin. His scleras were yellow with a black pupil. He wore a silver crown and red clothing with brown shoes.
He was born to an unknown King and Queen. When he was an adult, he married Prince Callous. Either he or Prince Callous had, with a woman, Carl.
He only appears in the episode "Rule of Dumb" on the family tree.