Plankton and Mr Krabs have been enemies for a long time. However, Mr Krabs reveals that they were not always this way and that they used to be friends.
| Actor | Role |
|---|---|
 Tom KennySpongeBob (voice) / Patchy | SpongeBob (voice) / Patchy |
 Bill FagerbakkePatrick (voice) | Patrick (voice) |
 Rodger BumpassSquidward (voice) | Squidward (voice) |
 Clancy BrownMr. Krabs (voice) | Mr. Krabs (voice) |
 Mr. LawrencePlankton (voice) | Plankton (voice) |
 Carolyn LawrenceSandy (voice) | Sandy (voice) |
 Mary Jo CatlettMrs. Puff (voice) | Mrs. Puff (voice) |
 Paul TibbittPotty (voice) | Potty (voice) |