Sheldon J. Plankton

Sheldon J. Plankton is the one of Pooh's enemies and the worst enemy of Eugene Krabs and SpongeBob SquarePants. He is married to his computer wife Karen. He always tries to get the secret information on the Krabby Patty, but his plans were always backfired.

Trivia

 * Plankton will team up with Terry Silver in Pooh's Adventures of The Karate Kid, Part III.
 * Plankton almost had his revenge on SpongeBob and Patrick in Winnie The Pooh In Fantasmic!.
 * Plankton will get his revenge on Pooh and his friends in Pooh's Adventures of The SpongeBob SquarePants Movie.
 * Plankton will get his revenge on Simba and the gang in Simba, Timon, and Pumbaa's Adventures of The SpongeBob SquarePants Movie.023.jpg
 * Plankton will get his revenge on Littlefoot and his friends in Littlefoot's Adventures of The SpongeBob SquarePants Movie.
 * Plankton will become the enemy of Thomas, Twilight, and their friends in Thomas and Twilight Sparkle's Adventures of the SpongeBob SquarePants Movie.
 * Plankton will make his first guest appearance in a Madagascar crossover in Alex's Adventures of Peter Pan, where he'll team up with Makunga to work for Captain Hook.
 * Plankton will become an enemy of Bloom and her friends in Pooh's Adventures of Winx Club Season 2.
 * Plankton will get his revenge on Bloom and her friends in Bloom's Adventures of The SpongeBob SquarePants Movie.
 * Plankton will return again in Pooh's Adventures of Avatar and the Winnie the Pooh/SpongeBob SquarePants short films.