Plankton is the main antagonist of Spongebob Squarepants. He is Mr. Krabs' arch-rival who wants to steal The Krabby patty recipe. He also serves as the main antagonist of the 2004 spongebob movie, and the secondary antagonist turned anti-hero in Spongebob Squarepants: Spongebob Out Of Water. He has a computer wife named Karen.
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