- Voice Actor: Bill Fagerbakke
Patrick Star is an ''''' pink ''sea star who lives under a rock and is SpongeBob's best friend. Patrick is not very intelligent, however he still offers SpongeBob advice and encourages dangerous and/or foolish activities which often get the two into trouble. But, like most cartoon idiots, he has occasional bursts of genius.''''' Patrick's parents, Herb and Margie, are rarely seen in the series.
- Voice Actor: Rodger Bumpass
Squidward Tentacles is SpongeBob and Patrick's cranky neighbor. His species is ambiguous, as has been called both a ''squid'' and an ''octopus'' by the series creators. Squidward is bald with green skin, a large nose, and lives in an ''Easter Island' head located between SpongeBob's and Patrick's residences. He works as a cashier at the Krusty Krab, a ''''' he despises. SpongeBob and Patrick consider Squidward their friend, but the feeling is not mutual.''''' Squidward's hobby is playing the ''clarinet, though he is not very good at it. His main rival is Squilliam Fancyson, his former band ''''' and the richest squid in Bikini Bottom.
The series animators illustrated Squidward with six tentacles, believing that giving him the proper number for a squid (ten) made him look too burdened.
- Voice Actress: Carolyn Lawrence
Sandy Cheeks is a ''squirrel who is SpongeBob's closest friend after Patrick. She is the series' only land-based character (originally from ''Texas), but lives in a large underwater home known as the "Treedome", which contains a large oxygen-producing oak tree and is sponsored by three chimp scientists who provide her with grants so she can invent mechanical devices. She is a scientific genius, practices karate with SpongeBob, and enjoys extreme sports.
Mr Krabs Edit
- Voice Actor: Clancy Brown
Eugene H. Krabs is the ''cheapskate owner and founder of the Krusty Krab.''''' He is a red ''crab, though his daughter, Pearl is a ''whale. He is the employer of both SpongeBob and Squidward. Despite his attitude and love of money, Mr. Krabs is often respected by SpongeBob while Squidward tends to loathe him.
- Voice Actor: Doug Lawrence
Sheldon J. Plankton is a small green ''copepod who is Mr. Krabs's nemesis and an ''antagonist of the series. He runs an unsuccessful restaurant called the Chum Bucket, located directly across the street from the Krusty Krab.''''' Plankton is married to a computer named Karen, and nearly became Mr. Krabs' stepfather in the episode "Enemy-In-Law." His main goal in life is to steal the Krabby Patty secret formula and put Mr. Krabs out of business.''''' Plankton succeeds at stealing the formula in ''the movie, but his goal of world domination is thwarted by SpongeBob.
Gary the Snail Edit
- Voice Actor: Tom Kenny
Gary the Snail is SpongeBob's pet ''sea snail. As worms are analogous to dogs in the series, snails are to cats, and Gary vocalizes like one.''''' He does various chores for SpongeBob, such as making his breakfast and paying the electric bill.
Recurring characters Edit
Mrs. Puff (''Mary Jo Catlett) - A ''white-spotted puffer with blonde hair and green fins who is the owner and teacher of a boating school (analogous to a driving school). She dreads teaching SpongeBob due to his reckless boating.
Mermaid Man (''Ernest Borgnine') and Barnacle Boy (''Tim Conway)''''' - Two aged superheroes that live in a retirement home whom SpongeBob and Patrick watch on television. Mermaid Man's catchphrase is "EVIL!", and the characters are the only animated humans in SpongeBob SquarePants.
Pearl Krabs (''Lori Alan) - Mr. Krabs' sixteen-year-old whale daughter, who is fairly popular but is sometimes teased about her father's cheapness.
The Flying Dutchman (''Brian Doyle-Murray) - A pirate ghost named after the famous ghost ship, The Flying Dutchman. He lives underwater in a giant ship, and collects souls.
Karen (''Jill Talley) - Sheldon Plankton's ''computer WIFE (Wired Integrated Female Electroencephalograph) who often expresses human emotions. Karen helps Plankton in his schemes to steal the Krabby Patty formula.
French Narrator (Tom Kenny) - He speaks at the start of some episodes, and has a French accent. He is seen as a ''scuba diver' with a TV camera, and was once hit by SpongeBob when driving a boat with Mrs. Puff. On the ''''' episode of the ''NPR program Fresh Air with Terry Gross, Kenny admitted that ''Jacques Cousteau was the inspiration for the French narrator, as series creator ''Stephen Hillenburg considered him an idol.
Patchy the Pirate (Tom Kenny) – A live-action character who is the president of the SpongeBob fan club and lives in ''Encino. He hosts SpongeBob specials and related major events.
Potty the Parrot (Stephen Hillenburg and Paul Tibbitt) - Potty is a character that appears in the live actions segments of special events. It is a crudely made puppet, controlled by very obvious strings. Potty is Patchy the Pirate's mischievous pet parrot who enjoys playing practical jokes on Patchy.
Squilliam Fancyson (''Dee Bradley Baker) - Squidward's successful and snooty rival from high school who owns a band and is well-known for the luxuries he possesses.
Minor characters Edit
Grandma SquarePants (''Marion Ross) and Grandpa SquarePants (Tom Kenny) - SpongeBob's grandparents.
Man Ray (''John Rhys-Davies/''Bob Joles) and the Dirty Bubble (''Charles Nelson Reilly) - Mermaid Man and Barnacle Boy's main enemies. Man Ray has a humanoid body with a special mask and helmet, while the Dirty Bubble is capable of encasing enemies inside his body. Charles Nelson Reilly is the primary actor for the Dirty Bubble, but Tom Kenny has portrayed the character in one episode after Reilly's death in 2007. In "Mermaid Man & Barnacle Boy IV" Barnacle Boy turns evil and he and Man Ray and the Dirty Bubble form an alliance called EVIL - Every Villain Is Lemons - with a symbol of a lemon with an evil face and tentacles.
Old Man Jenkins (''Doug Lawrence and ''Tom Kenny) - A mean old fish who used to live in the Rusty Krab care home before it became the Krusty Krab restaurant, and currently resides at Shady Shoals. His appearance changes through some episodes. Voiced by Doug Lawrence and Tom Kenny in separate episodes.
Painty the Pirate (''Patrick Pinney) - A painting of a pirate head who sings the SpongeBob SquarePants theme.
Scooter (''Carlos Alazraqui/''Clancy Brown) - A lavender-colored fish who enjoys ''surfing. He died in the second-season episode Bubble Buddy, but returned in future episodes. He talks like a stereotypical surfer dude and spends most of his time at the Goo Lagoon.
Sidney Poseidon (''Alanna Ubach) - A skinny 12-year-old singing celebrity from Greece. He was a green Greek merboy that has long dreadlocked blue hair, a ''shell necklace, two shell earrings, and a blue sparkling ''fish tail. He was also Spongebob's favorite singing celebrity. He has a ''guitar with a body shaped like a clamshell. In the 1999 music video, he sat on a giant clamshell in Bikini Bottom, plays his shell guitar, and sings "Atlantis" with a Greek accent.
King Neptune (''Paul Tibbitt/''John O'Hurley)''''' and ''Paul Tibbitt and ''John O'Hurley in the series.''''' - The king of the ocean and Atlantis, King Neptune is a massive magical blue merman with red glowing hair. Another Neptune appears as one of ''the movie's one-time characters, who is a massive green merman with a beard and a blindingly bald head, a daughter named Mindy, and is voiced by ''Jeffrey Tambor.
Jack Kahuna Laguna (''Johnny Depp) - A surfer who helps SpongeBob, Patrick and Squidward get home by teaching them how to surf.
[[Category:SpongeBob SquarePants, the title character, is a friendly and optimistic sea sponge who physically resembles a kitchen sponge, and lives in a pineapple on 124 Conch Street. He works at The Krusty Krab as a fry cook (for which he was named "Employee of the Month" many times), practices karate, enjoys jellyfishing, and attends Mrs. Puff's Boating School. SpongeBob has taken his boating school test many times, but has never passed, and his lack of a driver's license is a running joke throughout the series. SpongeBob's best friend is Patrick and he has a pet sea snail named Gary.]]