- 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 — S4E20
Episode: Karate Island
Air Date: 2006-05-12
Runtime: 11 min
Overview
SpongeBob receives an invitation to take part in a competition on mysterious Karate Island for the chance to be crowned "King of Karate." SpongeBob and Sandy arrive at Karate Island and it turns out that it was just all a set-up to make SpongeBob buy real estate.