Mr. Lawrence

Plankton / Teen Plankton / Rube (voice)

Jill Talley

Karen / All the Karens / Alarm Voice / Various (voice)

Tom Kenny

SpongeBob / Gary / French Narrator / Random Student (voice)

Bill Fagerbakke

Patrick / Troop (voice)

Rodger Bumpass

Squidward / Fish Troop / Goofy Goober Employee (voice)

Carolyn Lawrence

Sandy (voice)

Clancy Brown

Mr. Krabs / Pa Plankton (voice)

Mary Jo Catlett

Mrs. Puff (voice)

Lori Alan

Pearl / A Woman in Crowd (voice)

Dee Bradley Baker

Perch Perkins / Roommate / Various (voice)

Kate Higgins

Ma Plankton (voice)

Toby Larsen

Sand Castle Boy