SpongeBob SquarePants is a sponge that lives in a pineapple house in the ocean in the town of Bikini Bottom, when its customer Squidward Tentacles is an octopus living in moai's house. SpongeBob's other neighbor and intimate friend, Patrick Star a pink starfish, lives under a rock. Squidward's house is located between Spongebob's house and Patrick's house, and this is what worries Squidward.
SpongeBob and his friends live in the city of Bikini Bottom in the Pacific Ocean. Bikini Bottom is seen as an ordinary city with a city center, a suburb, a beach area, an airfield, a series of sea flowers and an amusement park. Stephen Hillenburg once said that Bikini Bottom is designed more or less based on the city of Seattle, Washington.
SpongeBob's pet is a sea slug named Gary, who "mews" like a cat. Though not saying much (except in a few episodes), other characters, he seems to be able to understand it. In addition, marine worms are designed like dogs and chained. Jellyfish is equated with bees; buzzing, shock (electric shock), and producing a delicious "jelly", which is likened to bee honey. Fish play a role as citizens but not important figures.
SpongeBob SquarePants a sea, yellow, and hollow sponge, works as a cook at Krusty Krab, a fast food restaurant, where Squidward also works as a cashier. Krusty Krab is owned by Eugene H. Krabs (Mr. Krabs). Sheldon J. Plankton is a mortal enemy of Krabs who owns a low-cost fast food restaurant called Chum Bucket located opposite the Krusty Krab. Chum Bucket seems to have never been visited by customers, and Plankton spends most of his time designing equipment to steal Mr. Krabby Patty's burger recipe. Krabs. Plankton only managed to steal the recipe in The SpongeBob SquarePants Movie; the formula was never shown to the audience. Plankton's computer wife, Karen, sometimes helps her in her evil design or quarrel with her.
Another SpongeBob comrade is Sandy Cheeks, a squirrel from Texas and lives in an antique dome insteady hibiscus flowers Bikini Bottom. He was escorted into the ocean by his chimpanzee masters. When outside his dome, he wears a shirt like Astronaut.