Maitre D is a character who appears in the episode "Mind the Gap."
He is a blue fish who wears a brown coat, a brown hat, a beige shirt, brown pants, and black shoes.
Role in episode
He says that SpongeBob is the coolest customer his jazz club ever had and offers him to join on a coolest table, but SpongeBob refuses because he is with Squidward. Then he says that Squidward needs to pay after the damage he did.