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Look I'll just cut to the chase. Do you have a dirty shell and hate bath time?
 
— Sheldon R. Shellcleaner, "Shellback Shenanigans'
Character

Sheldon R. Shellcleaner is an alter-ego of Plankton who only appears in the episode "Shellback Shenanigans."

Description

He has the same form as Plankton, but has a black afro and sideburns, a gray mustache, and wears brown suit and trousers, a light yellow undershirt, a red bowtie, a pair of black shoes, and carries a gray briefcase.

Role in episode

He arrives at SpongeBob's house, offering Gary a one night stay at Club Shell. He then offers to give Gary a temporary shell to replace his dirty one, which he accepts. Gary leaves, and Plankton takes off his disguise, and disguises himself as Gary, to try to steal the Krusty Krab formula.

Trivia

  • His last name comes from his made-up occupation, as the owner and operator of the fictional company, Super Shell Cleaner Vacations Unlimited.