Sheldon J. Plankton

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Sheldon J. Plankton
'SpongeBob SquarePants' character
First appearancePlankton! (July 31, 1999)
Portrayed byMr. Lawrence
Wayne Knight (The SpongeBob SquarePants Movie)
OccupationBoss of the Chum Bucket
RelativesWife: Karen Plankton
Son: Chip Plankton II
Pet: Spot

Sheldon J. Plankton is one of the ten main characters of SpongeBob SquarePants. He is a planktonic copepod who runs the Chum Bucket restaurant alongside with Karen, a waterproof robot who is Plankton's sidekick and wife. Plankton debuted in the episode "Plankton!", which aired on July 31, 1999.