Harold is a fish who makes many cameos throughout the show.
He appears often as a background character in scenes. In "Ripped Pants" he is seen rkasting marshmallows and
SpongeBob asks him if he can use two of them. In "New Digs" he is seen wiping his mouth with SpongeBob's underwear in the Krusty Krab while SpongeBob lives there.
He is red-orange and lighter colored fins. He has chubby cheeks and wears blue and green-yellow swimming trunks.