Hillenburg named Karen after his wife, Karen Hillenburg. They were created and designed by marine biologist and animator Stephen Hillenburg, the creator of the series.

He only has one eye, a feature that sets him apart from the others (besides his size). while pointing at his eye as a pun whenever Mr. Krabs foiled him.Out of his whole family, he seems to be the smartest, as his family is shown to be quite clueless and unintelligent.His family is made up of hillbillies, or what they appear to be, and he appears to have forgotten their stereotype after all these years.At 2 inches tall, Plankton is actually gigantic for his kind. Enemies: 1. Later, a giant jellyfish squeezes [=SpongeBob=] and Patrick, causing their eyes to pop. tall in "Komputer Overload").His analyzer could be wrong because Plankton is really evil as seen in the movie when he steals the formula and conquers Bikini Bottom. https://tvtropes.org/pmwiki/article_history.php.TVTropes is licensed under a Creative Commons Attribution-NonCommercial-ShareAlike 3.0 Unported License. SpongeBob 2. In the episode.Mr. ** In ''WesternAnimation/TheSpongeBobSquarePantsMovie'':--->'''Strangler:''' Get your feet out of my eye sockets!\\. He is usually green, but the exact shade changes depending on the episode. with ".He and Mr. Krabs is the only in their family to ever make friends with each other, their predecesors are enemies.In several relatively recent episodes, the inside of his mouth was purple. When they were kids, Plankton and Krabs were considered outcasts by other kids. Krabs succeeded with his Krabby Patties, which he had created by accident after Plankton had slammed the door. "Spongebob Squarepants" Re-written Episode/Movie Guide,Premigration Week (321SPONGEBOLT's version),I'm With Stupid (321SPONGEBOLT's version),Party Pooper Pants (321SPONGEBOLT's version),I Had an Accident (321SPONGEBOLT's version),https://spongebob-fanon.fandom.com/wiki/Plankton?oldid=6614. At first, their burgers were not successful. Since there was not any feud between Krabs and Plankton in their early childhood, it is possible that these families settled their differences until the childhoods of Krabs and Plankton.Plankton is small and shaped like a jelly bean. He is very dark green in the first movie but lighter in later episodes. Mr. Krabs named his restaurant the Krusty Krab, after himself.To this very day, Plankton has been single-mindedly obsessed with obtaining the Krabby Patty formula and running the Krusty Krab out of business. He and Karen are the owners of a failing restaurant called the.Plankton is the size of a bug compared to the rest of Bikini Bottom residents. * In "Squirrel Jelly", one of the mutant jellyfish that Sandy created slices Patrick's head open, then two of them enter his head, push his eyes out, and zap him from his sockets.

Around this time, Plankton started dating Karen, who was only a security system. He decides to get a pet. In ",Plankton's ancestors include the evil wizard,Evil (formerly), meschievous, mean, desperate, selfish (formerly), cruel, arrogant, intelligent, backstabbing (formerly), delusional, nerdy, two-faced (situationally), vengeful, determined, obsessive, insecure, cowardly,A green plankton with a big eye, a red pupil, two antenas, skinny arms and tiny legs.Take your favorite fandoms with you and never miss a beat.SpongeBob SquarePants: Battle for Bikini Bottom.SpongeBob SquarePants: Lights, Camera, Pants!SpongeBob SquarePants: Creature from the Krusty Krab,SpongeBob SquarePants featuring Nicktoons: Globs of Doom,Encyclopedia SpongeBobia: Sheldon J. Plankton,https://nickelodeon.fandom.com/wiki/Sheldon_J._Plankton?oldid=285253,Robo-Krabs: Robot version of Mr. Krabs, with Karen's system built inside. Mr. Krabs (childhood) 4. He mistakenly perceives SpongeBob as a major ingredient in Mr. Krabs' formula for success, and is forever trying to lure the loyal employee away from his Krusty Krab duties.He appears for the first time in the episode ".Sheldon J. Plankton was born on the same day as his rival Eugene H. Krabs.