Timmy's father is a background character who first appears in the episode "Valentine's Day."
He is a tall male fish with three dark spots above his mouth. He wears a collared shirt and has a thin dorsal fin. His most common color scheme is turquoise with green spots and a purple shirt. In The SpongeBob SquarePants Movie, he is green with purple spots. In "Dirty Bubble Returns," he is yellow with orange spots.
He was originally drawn as part of the carnival crowd for "Valentine's Day." He is married to Timmy's mother and is the father of Timmy. In "Dirty Bubble Returns," he and his family are revealed to own a ship funnel house that is extremely dirty.