Tom Kenny as SpongeBob / SpongeBot / Gary / Robo-Gary / French Narrator

Bill Fagerbakke as Patrick / Pat-Tron

Rodger Bumpass as Squidward / SquidBot / Captain Doug Quasar / Demon

Clancy Brown as Mr. Krabs / RoboKrabs

Mr. Lawrence as Plankton / PlankBot / Rube / Rubedor / Robo-Larry

Jill Talley as Karen / Squidina Star

Carolyn Lawrence as Sandy Cheeks / Sandroid

Lori Alan as Pearl

Thomas F. Wilson as Cecil Star

Cree Summer as Bunny Star

Dana Snyder as GrandPat Star

Patrick Pinney as Painty the Pirate