- Clancy Brown
- Mr. Krabs / Pa Plankton (voice)
- Tom Kenny
- SpongeBob / Random Student / Gary / French Narrator (voice)
- Dee Bradley Baker
- Perch Perkins / Roommate / Guy in the Back of the Crowd / Muscle Fish (voice)
- Bill Fagerbakke
- Patrick / Troop (voice)
- Mary Jo Catlett
- Mrs. Puff
- Lori Alan
- Pearl / A Woman in Crowd (voice)
- Mr. Lawrence
- Plankton / Teen Plankton / Rube / Snorkeler (voice)
- Rodger Bumpass
- Squidward / Fish Troop / Goofy Goober Employee (voice)
- Kate Higgins
- Ma Plankton
- Carolyn Lawrence
- Sandy
- Jill Talley
- Karen / Smart Karen / Evil Karen / Snarky Karen / New Karen / All the Karens / Alarm Voice / Stiletto Woman / Old Lady with Cane (voice)
- Austin Valli
- Fitness Bro
- Toby Larsen
- Sand Castle Boy
- Dave Needham
- (Handsome) Plankton
- Natalie Kailey
- Sunblock Gal
- Sale Taylor
- Ice Cream Guy
- Lisa Linder Silver
- Fish Mom #1 / Fish Mom #2 / Swan / Fish (voice)
- Genesis Clarre
- Bucket Girl
- Abbi Ella Gonzales
- Sand Castle Girl
