General Information
Gender: Male
Color: Green
Eye Color: Red and yellow
Height: 2 inches
Occupation(s): Owner and Founder of the Chum Bucket
Aliases: Peter Lankton (Mr. P. Lankton), Planky, Mr. Brain-a-tron 5000, Professor Plankton, Robo-Krabs, The Amazing Plankton, Gammy-Maw
Family & Friends
Family: Karen (wife)
Clem (cousin)

Fredrick (father-in-law)
Zeke (cousin)
Rufus (cousin)
Jeke (cousin)
Billy Bob (cousin)
Billy Jim (cousin)
Billy Billy Bo Willy Banana Fanna Fo Filly (cousin)
Doug (cousin)
Enis (cousin)
Rainchild (cousin)
Gram Gram (grandmother)
Grand Dad (grandfather)
Planktonamor (ancestor)
Dead Eye Plankton (ancestor)
Mr. Plankton (father)

Friends: SpongeBob SquarePants (sometimes)
Patrick Star
Mr. Krabs (sometimes)
Mama Krabs
Pet(s): Labrador
Employees: SpongeBob SquarePants (previously)
Patrick Star (several times)
Stanley S. SquarePants
Enemies: Eugene H. Krabs
SpongeBob SquarePants
Patrick Star
Squidward Tentacles
Sandy Cheeks
Other Informations
Interests: Crushing his enemies
Feeding people chum
Ruining Mr. Krabs' business
Trying to rule the world and Bikini Bottom
Awards: 10 Fry Cook Games trophies
Series Information
First appearance: "Plankton!" (SpongeBob SquarePants)
"A SquarePants Family Vacation" (SpongeBob's Runaway Roadtrip)
Portrayer: Mr. Lawrence
List of characters

Sheldon James Plankton is Mr. Krabs' nemesis and the antagonist in the series. He is the main antagonist in several SpongeBob SquarePants episodes, a protagonist-villain in Walking the Plankton and a non-villain in episodes when he is not portrayed as an antagonist/villain.

He operates a struggling restaurant called the Chum Bucket, located directly across the street from the Krusty Krab. His primary goal in the series is to steal the Krabby Patty recipe and put Mr. Krabs out of business.

He succeeds in stealing the patty's formula in the "SpongeBob SquarePants" movie, though would not have if he did not receive advice from his computer wife, Karen.


Plankton has spent a long period of time trying to destroy the Krusty Krab, a franchise owned and operated by Mr. Krabs. He is married to a computer named Karen.Sometimes his computer wife would come up with an idea but he dosen't accept it, but then uses the same idea as his own.He always comes short of getting the Krabby Patty formula.



Sheldon is made up of two dark green antennae, a set of stubby arms, a set of legs, and a green short body. Plankton's short height is often mentioned and pointed out in episodes of SpongeBob SquarePants.


Family with PlanktonEdit

Plankton's wife is his computer system, Karen, even though neither of them fully consider the other their true soulmate, and their relationship is a very troubled one, although it was slightly mended by the events of the SpongeBob SquarePants episode, Komputer Overload. Plankton has thousands of hilbilly cousins as revealed in Plankton's Army.


Planktons ancestor is the evil Dead Eye Plankton