Sheldon Plankton is a character from SpongeBob SquarePants. He is always plotting to steal the Krabby Patty formula.

Characters from SpongeBob SquarePants
SpongeBob SquarePants / Patrick Star / Squidward Tentacles / Mr. Krabs / Plankton / Gary the Snail / Sandy Cheeks / Pearl Krabs / Karen Plankton / Larry the Lobster / Flying Dutchman / Mermaid Man / Barnacle Boy / Squilliam Fancyson

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