- Julian Northrup as Spongebob
- Mr. Brink as SpongeBob's Dad
- Nellie Northrup as Princess Mindy
- Marcia Giles as Sandy Cheeks
- John 'Pud' Northrup as Johnny Erain
- Mr. Grimes as Larry the Lobster
- Dr. James Evans as Tom
- Ben Pilbeam as Plankton
- Demetria Riffle as Mrs. Puff
- Sheriff Burlingame as Dennis
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