- Tom Kenny (SpongeBob SquarePants / Gary the Snail (voice))
- Bill Fagerbakke (Patrick Star (voice))
- Rodger Bumpass (Squidward (voice))
- Clancy Brown (Mr. Krabs (voice))
- Carolyn Lawrence (Sandy Cheeks (voice))
- Mary Jo Catlett (Mrs. Puff (voice))
- Mr. Lawrence (Plankton / Larry the Lobster (voice))
- Jill Talley (Karen Plankton (voice))
- Lori Alan (Pearl Krabs (voice))
SpongeBob SquarePants — S1E12
Episode: Mermaid Man and Barnacle Boy
Air Date: 1999-08-21
Runtime: 11 min
Overview
SpongeBob and Patrick find that their television heroes, Mermaid Man and Barnacle Boy, are retired old people. SpongeBob and Patrick try to get them back into Superhero business again.