- Sheldon J. Plankton
- Dead Eye Plankton
- Mrs. Puff
- Frank (lifeguard)
- Frankie Billy
- Frank (red shirt)
- Justin Bottomfeeder (debut; mentioned)
The short begins with Plankton introducing himself along with his evil genius diaries. Plankton does not feel like himself and claims he is more than just stealing the formula. He says that he has the voice of an angel, in which he then attempts to sing. He causes a window on a building to crack, as well as the windows to Mrs. Puff's Boating School to break and curious sunbathers to look up and wonder what the noises heard were.
Plankton finally appears and ends the short by saying that the world is not ready for a talent such as his, and starts to sing "The F.U.N. Song" poorly.
- This is the first appearance of Mrs. Puff's Boating School in a short.
- This short premiered on Johnny Depp's 50th birthday, four years after 10 Happiest Moments and SpongeBob RoundPants were released, and two years after SpongeBob Marbles & Slides was updated for the seventh time.
- Justin Bottomfeeder may be a parody of Justin Bieber.