Captain Lutefisk is the owner of the Demolition Derby. He was revealed to be a student from Mrs. Puff's class from a long time ago. He first appears in the episode "Demolition Doofus." And the book Demolition Derby.


Captain Lutefisk is a large, light olive green fish with scarlet red stripes on his arms.. He has large, fuzzy black hair, almost like an afro, and a frizzy goatee. He also wears a light brown jacket and brown pants with no shirt. His black shoes are extremely similar to SpongeBob's.


Captain Lutefisk is first seen walking out his office along with Mrs. Puff and SpongeBob, agreeing to sign SpongeBob up for the Derby. Lutefisk then announces all of the competitors including giving SpongeBob the nickname "The Squish."

Lutefisk is then only seen calling the action and never appears again once Mrs. Puff joins the Derby by herself.