An athletic, orange-skinned male Snork, Dimmy fancies himself to be a comedian as well as a fighter, but his attempts at comedy usually lead to awkward results. He has learned ballet from Daffney Gilfin to improve his Snorkball skills. He also has a big appetite, and hates being called by his full name.
He is Allstar Seaworthy's good friend and Daffney's love interest, although he is temporarily replaced by Jo-Jo as Daffney's date to the debutante ball and becomes jealous. He once had a crush on a little mermaid whom he saved from a storm and the evil Dr. Strangesnork. From the beginning of season 3, he is written out of the storylines for unknown reasons, but he does make some cameo appearances.