Patrick Star (voiced by Bill Fagerbakke) is SpongeBob's best friend. Squidward Tentacles (voiced by Rodger Bumpass) is the neighbor of SpongeBob and Patrick. Eugene H. Krabs (voiced by Clancy Brown) is a sea crab who is the owner of the Krusty Krab. Sandra Sandy Cheeks (voiced by Carolyn Lawrence) is a squirrel and one of SpongeBob's best friends. Gary the Snail (voiced by Tom Kenny) is SpongeBob's loyal pet, although his behavior in several aspects resembles a snail. Sheldon J. Plankton (voiced by Mr. Lawrence) is Mr. Krabs' nemesis and the main antagonist in the SpongeBob SquarePants series.