Best Friends:
* Patrick Star: SpongeBob's best friend, a pink starfish known for his childish antics and dimwitted nature.
* Sandy Cheeks: SpongeBob's other best friend, a squirrel who lives underwater in a special diving suit. She is intelligent, resourceful, and loves science.
Other Close Friends:
* Squidward Tentacles: SpongeBob's grumpy, cynical, and artistic neighbor who constantly tries to avoid him.
* Plankton: A tiny plankton who runs a failing fast food restaurant called the Chum Bucket. While often seen as a rival, SpongeBob often shows him kindness and tries to help him.
* Mr. Krabs: SpongeBob's stingy but loving boss, who runs the Krusty Krab restaurant.
Other Notable Friends:
* Gary the Snail: SpongeBob's pet snail who speaks in "meows."
* Pearl Krabs: Mr. Krabs' daughter, who is a teenager and often finds SpongeBob's antics embarrassing.
* Larry the Lobster: A lifeguard at Goo Lagoon, SpongeBob's friend who loves to work out.
* Mrs. Puff: SpongeBob's boating school instructor, who is constantly exasperated by his lack of boating skills.
SpongeBob has a wide circle of friends, showcasing the importance of friendship and kindness in the show.