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Mainimage plankton

Sheldon Plankton is a major antagonist in Spongebob Squarepants and a member of the Organization.

Canon BioEdit

Plankton is Eugene Krabs's arch rival and the main antagonist of the series, though the two were once best friends, as revealed in "Krabs vs. Plankton" and "Friend or Foe?". He operates a struggling restaurant called the Chum Bucket across the street from the Krusty Krab. His primary goal in the series is to steal the Krabby Patty recipe and drive Mr. Krabs out of business. SpongeBob has also had a few temporary friendships with Plankton, such as in "F.U.N.", when Plankton learns what fun is. Plankton has also been revealed to an immense fear of whales.

Plankton has a computer wife named Karen, who is actually a "W.I.F.E." (Wired Integrated Female Electroencephalograph) Karen apparently has a mind of her own, to the point of making fun of her husband. She usually gives him ideas which he often censors out and takes them as his.

Appearence in UltimaEdit

Edited Plankton picture

Plankton with some battle-scars (edited to include Plankton's eyebrow)

Plankton became a frequent menace for the Society during their journey to find the other Ultimaweapons. During his many encounters, his plans are always foiled and failed thanks to the Ultima Wielders, or sometimes his own doing. Because of this, he's a laughing stock towards the Org. Even Maleficent chuckles while punishing him for his failures. But as stubborn as sea urchin, he's never quite give up after failing again and again. Padro Lodo has shown interest in making Plankton a Harbinger, and granting him his own "abilities".
Giant-plankton

became a giant when infused with heartless-cell power

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