Plankton Junior｜Sheldon J. Plankton, referred to as Plankton, is a smart, diabolical, evil, hard-shelled organism who runs this dinky, unpopular restaurant called the Chum Bucket. Plankton tries to steal the Krabby Patty formula from Mister Krabs, who owns a very popular restaurant across the street called the Krusty Krab. WIth that formula, he would conquer fast food popularity. He hasn't done it yet, though, and he wants his son to live up to his name and continue running the Chum Bucket. Plankton loves his son very much, but he doesn't show it often. He may be evil and diabolical on the outtside, but on the inside he just loves his son and wants to protect him.