- 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 — S0E79
Episode: Time Machine
Air Date: 2011-06-14
Runtime: 1 min
Overview
A SpongeBob SquarePants Back to the Past short. In this short, SpongeBob and Patrick go back in time to see the young Mermaid Man and Barnacle Boy.