This character also makes an appearance in It's a SpongeBob Christmas! For that version of this page, see Sheldon J. Plankton.
Sheldon J. Plankton (portrayed by Mr. Lawrence) played a very minor role in Christmas Who? He sang along with Mr. Krabs during the main song in the episode.
MainSpongeBob SquarePants • Patrick Star • Sandy Cheeks • Squidward Tentacles • Eugene Krabs • Sheldon J. Plankton • Santa Claus • Potty the Parrot • Painty the Pirate • Patchy the Pirate