Plankton (SpongeBob SquarePants)
Encyclopedia
Sheldon Jim Plankton, Jr., or simply Plankton, is a fictional character
Character (arts)
A character is the representation of a person in a narrative work of art . Derived from the ancient Greek word kharaktêr , the earliest use in English, in this sense, dates from the Restoration, although it became widely used after its appearance in Tom Jones in 1749. From this, the sense of...

 on the American
United States
The United States of America is a federal constitutional republic comprising fifty states and a federal district...

 television cartoon series
Cartoon series
A cartoon series is a set of regularly presented animated television programs with a common series title, usually related to one another. These episodes typically share the same characters and a basic theme...

 SpongeBob SquarePants
SpongeBob SquarePants
SpongeBob SquarePants is an American animated television series, created by marine biologist and animator Stephen Hillenburg. Much of the series centers on the exploits and adventures of the title character and his various friends in the underwater city of "Bikini Bottom"...

. He is voiced by Mr. Lawrence
Mr. Lawrence
Douglas Lawrence Osowski , better known as Mr. Lawrence and sometimes credited as Doug Lawrence, is an American voice actor, comedian, writer, storyboard artist, animator and director.-Career:...

. The character is also in video games and other media based on the series. Additionally, he has been featured on countless toys, games, dolls, and other popular merchandise items.

Role in SpongeBob SquarePants

Plankton is a small plankton
Plankton
Plankton are any drifting organisms that inhabit the pelagic zone of oceans, seas, or bodies of fresh water. That is, plankton are defined by their ecological niche rather than phylogenetic or taxonomic classification...

 (based possibly on the copepod
Copepod
Copepods are a group of small crustaceans found in the sea and nearly every freshwater habitat. Some species are planktonic , some are benthic , and some continental species may live in limno-terrestrial habitats and other wet terrestrial places, such as swamps, under leaf fall in wet forests,...

), is rather aggressive and has two antennae and one eye.( Though in a recent episode he gains another, but decides to get rid of it) He is the main antagonist
Antagonist
An antagonist is a character, group of characters, or institution, that represents the opposition against which the protagonist must contend...

 of the series and Eugene Krabs
Mr. Krabs
Captain Eugene Harold "Armor Abs" Krabs is a fictional character in the American cartoon series SpongeBob SquarePants. He is voiced by Clancy Brown. Mr. Krabs is seen in most episodes of the show, as well as in movies, video games, and other media based on the series...

's arch rival, though the two were once best friends, as revealed in "Krabs vs. Plankton" and later explained in "Friend or Foe?". He operates a struggling restaurant called the Chum Bucket across the street from the Krusty Krab
Krusty Krab
The Krusty Krab is a restaurant in the city of Bikini Bottom in the animated television series SpongeBob SquarePants.-Depictions:The owner of the Krusty Krab is Eugene H. Krabs, although ownership changed to SpongeBob in "Patty Hype" and to Howard Blandy in "The Algae's Always Greener"...

. His primary goal in the series is to steal the Krabby Patty secret formula 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 is afraid of whales, enough to go insane. This is because a pod of whales ate his ancestors.

Plankton has a computer
Computer
A computer is a programmable machine designed to sequentially and automatically carry out a sequence of arithmetic or logical operations. The particular sequence of operations can be changed readily, allowing the computer to solve more than one kind of problem...

 wife named Karen, who is actually a "W.I.F.E." (Wired Integrated Female Electroencephalograph
Electroencephalography
Electroencephalography is the recording of electrical activity along the scalp. EEG measures voltage fluctuations resulting from ionic current flows within the neurons of the brain...

). 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.

A few episodes ahead, Plankton created a Robot
Robot
A robot is a mechanical or virtual intelligent agent that can perform tasks automatically or with guidance, typically by remote control. In practice a robot is usually an electro-mechanical machine that is guided by computer and electronic programming. Robots can be autonomous, semi-autonomous or...

 Spongebob to do his dirty work, however, he does not appear in many episodes. But he does in the game Spongebob Squarepants: The Movie, it takes place on when Plankton steals King Neptune
King Neptune
King Neptune may refer to:* King Neptune , a pig that was used to raise $19 million in war bonds during World War II* King Neptune, an officiator in a naval Line-crossing ceremony...

's crown, and he blames it on Mr. Krabs.He first appeared in the episode of the same name.

Family

Plankton has a large, extended family,containing 10,000+ members of different forms of plankton, most of whom are hillbillies
Hillbilly
Hillbilly is a term referring to certain people who dwell in rural, mountainous areas of the United States, primarily Appalachia but also the Ozarks. Owing to its strongly stereotypical connotations, the term is frequently considered derogatory, and so is usually offensive to those Americans of...

. It is from them the audience learns his full name, Sheldon J. Plankton Jr. He is also married to his super computer wife, Karen.
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