| Tom Kenny | SpongeBob/Narrator/Gary/Clay/Tough Fish #2/Twin #2/Houston Voice |
| Bill Fagerbakke | Patrick Star/Fish #2/Chum Customer/Local Fish |
| Clancy Brown | Mr. Krabs |
| Rodger Bumpass | Squidward/Fish #4 |
| Mr. Lawrence | Plankton / Fish #7 / Attendant #2, Lloyd |
| Alec Baldwin | Dennis |
| David Hasselhoff | Himself |
| Scarlett Johansson | Mindy |
| Jeffrey Tambor | King Neptune |
| Jill Talley | Karen, The Computer Wife / Old Lady |
| Carolyn Lawrence | Sandy |
| Mary Jo Catlett | Mrs. Puff |
SpongeBob and Patrick head for Shell City to retrieve King Neptune's stolen crown and save the life of Mr. Krabs .
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