SpongeBob SquarePants 8×18
SpongeBob and Patrick learn the secret origins of Mermaid Man and Barnacle Boy from the heroes themselves.
Guest appearances: Ernest Borgnine and Tim Conway as Mermaid Man and Barnacle Boy.
Serie: SpongeBob SquarePants
Director: Nick Jennings, Stephen Hillenburg, Tim Hill
Guest Star: Bill Fagerbakke, Carolyn Lawrence, Clancy Brown, Dee Bradley Baker, Jill Talley, Lori Alan, Mary Jo Catlett, Mr. Lawrence, Rodger Bumpass, Sirena Irwin, Tom Kenny