Full Name

Sheldon J. Plankton




Spongebob Squarepants


Owner and founder of the Chum Bucket


High intellect, technical knowledge


Plotting and scheming


To get the Krusty Krab secret formula (succeeded in the first film) and then take over the world (failed)

Type of Villain

Evil Genius

Sheldon J. Plankton, better known as Plankton, is the main antagonist of Nickelodeon's popular cartoon series Spongebob Squarepants. He is an evil zooplankton and the business rival of Mr. Krabs, the owner of the Krusty Krab, where Spongebob Squarepants works. While the Krusty Krab is popular among the whole sea of Bikini Bottom and The Chum Bucket is with zero customers. Plankton has no money.

Role in the series Edit

He owns a food place called the Chum Bucket and whenever he has a good plan he goes to the Krusty Krab to try and steal the formula but however Mr. Krabs, Spongebob, and Squidward stop him from stealing the formula.

The Spongebob Squarepants Movie (2004) Edit

He even serves as the main antagonist of the 2004 film based off the series. He steals the formula without being stopped, because Mr. Krabs was frozen by a king then near the end of the film he gets hurt and gets taken to sometime of hospital.

The Spongebob Movie: Sponge out of Water (2015) Edit

He served as the secondary antagonist/antihero of the sequel to the first film. Even though he is the main antagonist of the series but however Burger-Beard is actually the film's true main antagonist and he served as one of the superheroes. Then near the end of the film he becomes back to his evil side.

Video Games Edit

Battle for Bikini Bottom Edit

Plankton even serves as the main antagonist of the 2003 video game he has evil robots so he can steal the secret formula and take over the entire world.

Trivia Edit

  • Plankton can sometimes thought to be the main antagonist of Sponge out of Water

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