Sheldon J. Plankton

Sheldon J. Plankton, more commonly known as Plankton, is the minor character of Cartoon Parody. He is originally one of the ten main characters in the SpongeBob SquarePants franchise. He is a planktonic copepod, who runs an unsuccessful restaurant called the Chum Bucket alongside Karen, a waterproof computer who is his sidekick and wife. The Chum Bucket is highly unpopular in Bikini Bottom because it serves chum, a type of bait made from fish meat.

At first, Plankton despises his rival, Mr. Krabs, for running a successful restaurant because his own business rarely gets any customers. He is incredibly jealous of Mr. Krabs and his success. His main goal is to steal Krabs' secret formula for Krabby Patties and running Mr. Krabs out of business. Karen gives him a variety of evil plans to steal it, but their efforts always end up failing in the process.

In the series, he is now the boss of Damian Cooper, who wants to control all cartoons and take over the world togehter. But in the film, Damian Cooper instead betrays him by wanting to destroy all cartoons and rule the world for himself.

Appearence
Plankton is, as his name suggests, a tiny dark green-colored plankton who can fit in the palm of one's hand. He has some stubby appendages and one yellow eye with a red pupil. He has two long, skinny antennae with four small green spikes sticking out along them. He also has one black thick eyebrow. He has no ears or nose.

Personality
Plankton is egotistical, aggressive, and power-hungry. He is incredibly jealous of Mr. Krabs and his success. His only goal throughout the series is stealing the Krabby Patty secret formula and running Mr. Krabs out of business. A desire that has led him to destroy The Krusty Krab on more than one occasion. He is manipulative, as he manipulated SpongeBob into becoming "Assertive" to drive everyone in the beach away so he could build another Chum Bucket. He also manipulated SpongeBob by pretending to be his friend to get a Krabby Patty. He is also deceitful, as he is always trying to convince SpongeBob and the others that he can be trusted, only to use their goodwill to get closer to the formula. Either way, he's too busy plotting revenge to interact with most of the characters. Being a villain might be lonely, but Plankton seems to like it that way.

He also has an obsession with "world domination" as he is always mentioning that he will rule the world once he steals the Krabby Patty formula and becomes more successful. He teamed up with Damian Cooper in several episodes and claimed he will rule the world with him.

Plankton is also highly intelligent and is one of, if not, the smartest citizen in Bikini Bottom, with his intellect being on par with only Sandy and Damian Cooper.

He has a minuscule size and overcompensates by being evil and manipulative. He has tried everything from constructing an evil robot to hiring an assassin to kill SpongeBob and Patrick, and for also kidnapping Steven and giving him diamond powers that turned him into a monster to destroy Beach City, but all his plans end up failing in the long run.

While Plankton is one of the smartest characters in the show, he often shows himself to be short-sighted and impulsive, and sometimes lacking common sense. This is shown when all his plans of obtaining the Krabby Patty formula often fail, usually due to oversights, and he doesn't think beforehand of what might go wrong.

Trivia

 * He learns about teamwork, like The SpongeBob Movie: Sponge Out of Water.