This is a list of characters from the Nickelodeon animated television series, SpongeBob SquarePants.

Main characters

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• SpongeBob SquarePants - An incredibly optimistic square-shaped sponge who lives in a pineapple under the sea, he is the lead character of the show. He works at the Krusty Krab with his boring neighbor Squidward. He believes that no one has ulterior motives, and believes almost anything that anybody tells him. His interests are bubble blowing, jellyfishing, playing super heroes, and "doing things" with Patrick. He is very pliable and rubbery, and is capable of stretching, inflating, multiplying, or even breaking apart.
• Squidward Tentacles - A bad-tempered and hostile octopus (Stephen Hillenburg insists Squidward is an octopus and not a squid-this makes sense, as a squid would have ten limbs, rather than eight as Squidward does) that lives in an Easter Island moai between the domiciles of SpongeBob and Patrick. Although loved by the other characters, Squidward is rather pessimistic and antisocial, exhibiting many curmudgeonly tendencies. He is an artist who paints and plays the clarinet (badly).
• Patrick Star - A cheerful, naïve and unintelligent starfish who is SpongeBob's best friend. He lives under a rock to the left of Squidward's house. Everybody but SpongeBob and himself realize that Patrick is incredibly stupid.
• Eugene H. Krabs - The money-addicted, miserly owner of the Krusty Krab. Commonly known as Mr. Krabs, he is SpongeBob and Squidward's boss. He lives in an anchor with his daughter Pearl, who is (somehow) a whale while he is a crab. Mr. Krabs once said that Pearl "takes after her mother that way", in a guide to the show.
• Sandy Cheeks - A karate loving daredevil martial artist and scientist squirrel who moved into an air-filled dome under the sea in Bikini Bottom. Her dome is located somewhere directly down the road from SpongeBob, Patrick and Squidward's houses. She used to live in Texas.
• Gary - SpongeBob's pet snail, who acts very much like a cat, for example, meowing, sleeping, and avoiding baths. Very intelligent, as revealed in the episode "Your Shoe's Untied". Gary actually wears shoes, and taught SpongeBob how to tie his shoes. Gary also has a record player in his shell.
• Sheldon J. Plankton - The owner of the restaurant Chum Bucket and Mr. Krabs' main rival. Usually referred to by his surname, Plankton, he has one yellow eye with a red iris. Plankton is supposed to be modeled after a kind of plankton called a copepod. He is determined to steal the secret Krabby Patty formula from The Krusty Krab and run Mr. Krabs out of business. His restaurant, which never made business except for the movie, is across the street of the Krusty Krab. He is married to his computer, Karen.
• French Narrator - The one who introduces the viewers to most episodes and the one who reads the time cards--a parody of oceanographers such as the French Jacques Cousteau. He also does the voice of the "realistic talking fish head" reporter.

Major characters

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• Larry Lobster - A very strong lobster. Regularly goes to Bikini Bottom's beach, Goo Lagoon and works as a lifeguard there. He is basically congenial, but SpongeBob seems to suspect him of deliberately stealing his time with Sandy. Next to her, Larry is the strongest critter in Bikini Bottom.
• Mrs. Poppy Puff - A Boating School Driving instructor who teaches students (including SpongeBob) at Mrs. Puff's Boating School. She often gets hurt by SpongeBob's bad driving, and ended up in jail a few times. She went on two dates with Mr. Krabs in "Krusty Love". Her erratic behavior comes from two fears: the first, being stuck teaching SpongeBob, an annoyingly painful, and yet perfect, student; the other is letting loose a monster like SpongeBob who could destroy Bikini Bottom with his awful driving skills. Being a pufferfish, she often inflates herself when something bad happens, such as when SpongeBob crashes during boating lessons. Mrs. Puff has a pet, Snellie, the same one Squidward entered in the Great Snail Race. Not much has been revealed about her personal history, except that she has had to move from another town and start a new boating school under a new name ("...I'll move to a new town, start a new boating school under a new name. No. Not again..." No Free Rides), doesn't like to talk about what happened to her late husband (Mr. Puff was turned into a lamp), and has had a history of mental instability ("You can get through this without losing your sanity. Whew, that's a road we don't want to go down again" Doing Time); suggesting that she may have killed her husband and fled. Mary Jo Catlett, better known for her role as Pearl the maid on "Diff'rent Strokes", provides Mrs. Puff's voice.
• Squilliam Fancyson - An octopus that attended Squidward's band class, and always puts Squidward down. He is a very wealthy, snooty, unibrow-endowed rival of Squidward who looks down at Squidward for being just a lowly cashier in a greasy spoon. When Squilliam takes his band to the "Bubble Bowl", he comments that he is living Squidward's dream. However, at the end of "Band Geeks", Squlliam, painfully aware of how good Squidward's band's performance is, has a heart attack and is rushed to hospital, therefore Squidward gets his own back. Squidward is painfully jealous and schemes constantly to show Squilliam he isn't a loser. He later returns in "Squilliam Returns" and thinks that Squidward was the owner of a five-star restaurant. He owns a private yacht, a private lake, a private heliport, a private island, and a balloon/casino + he owns beautiful clothes, velvet shirts with a leather collar, and gold-silver alloy buttons for his leather cloak. Squilliam's name is a combination of the name 'William' and the name 'squid' (Squidward has a similar combination of his name, which is "squid" and "Edward").
• The Flying Dutchman - A green ghost named after the famous ghost ship of the same name. He lives in a giant ship that floats in the "sky" (underwater). When he died they used his body as a window display. Now he haunts the seven seas because he was never put to rest. Whenever he appears, a thunderstorm suddenly occurs. He last wore shoes 5,000 years ago. He has won the Fancy Knotting contest for the past 3,000 years. The knots he knows are: Pretzel Knot, Double Diamond Knot, Square Knot, The Constrictor, Gut Knot, Pillow Knot, Butterfly Knot, Monkey Chain, Monkey's Fist, The Monkey and the Loop Knot a.k.a. Poop Loop. He cannot eat without his dining sock.
• Patchy the Pirate - President of the SpongeBob SquarePants Fan Club. Presents SpongeBob SquarePants specials. Has an eyepatch and hook for a hand that alternates between his left and right hands. Tom Kenny plays Patchy.
• Potty the Parrot - Patchy's pet parrot. He normally annoys Patchy and likes future stuff while Patchy likes prehistoric stuff. Voiced by Steven Hillenburg. Potty's favorite band is "The Birdbrains."

Minor characters

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Family Members/Ancestors/Descendants

Family Members

=SpongeBob's Family

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• Mr. and Mrs. SquarePants - SpongeBob's parents, made their debut in "Home Sweet Pineapple", where they came to pick up SpongeBob after nematodes ruined his pineapple house. They later appeared in "Culture Shock " as they watched the Krusty Krab talent show, and in "No Free Rides", where Mr. SquarePants kissed Mrs. Puff's hand and gave his son a boatmobile for passing his driver's test. Mr. SquarePants has a moustache, wears thick glasses, is bald, wears a white short sleeve shirt (which the sleeves are only seen) and brown pants pulled up high. Mrs. SquarePants has black hair and is dressed in a purple pillbox hat with matching sleeveless dress and has a pearl necklace, her appearance resembles Jacqueline Kennedy. Strangely, neither Mr. SquarePants or Mrs. SquarePants are square. Mr. SquarePants is voiced by Tom Kenny and Mrs. SquarePants is voiced by Sirena Irwin.
• Grandma SquarePants - SpongeBob's grandma and Mr. SquarePants' mother (voiced by Marion Ross). She made her debut in "Grandma's Kisses" and treats SpongeBob like a baby, which he resents because other characters make fun of him for it.
• Grandpa SquarePants - SpongeBob's grandpa and Mr. SquarePants' father (voiced by Tom Kenny). He made his first appearance in "The Sponge Who Could Fly". "Sayings" he has said: "If we were meant to fly, we'd have propellers on our heads or jet engines on our backs." and "Don't chase after a bus, especially one that's going up at a 90 degree angle."
• Todd SquarePants - SpongeBob's cousin who officially (and only) appeared in the Story Reader book, The Never-Ending Stay. He was to stay in SpongeBob's house forever but Todd left in the end after being offended by SpongeBob. He is voiced by Tom Kenny.
• Sherman "Sherm" SquarePants - Mr. SquarePants' brother and Grandma SquarePants' second son. Uncle Sherm was first mentioned in the episode "Krab Borg".

=Patrick's Family

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• Ed Star - Patrick's cousin. He only appeared in the end of the Story Reader book, The Never-Ending Stay. He stayed in Bikini Bottom for 14 weeks.
• Mr. Star - Patrick's father. Voiced by Thomas F. Wilson.
• Mrs. Star - Patrick's mother. Voiced by Lori Alan. In addition to his real parents, Patrick once confused them with two starfish named Janet and Marty. They were equally confused, but it was cleared up when Marty reminded Janet that they don't have a son.

=Squidward's Family

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• Mrs. Tentacles - Squidward's mother. She made a tiny appearance in "Fools in April". She says "You stink!", possibly indicating a bad childhood, in a flashback of when Squidward pulled a bad April Fool's prank on SpongeBob, which occurred a short time before he realized his mother was there. She made her first live appearance on the episode, "Krusty Towers", because Squidward wanted cookies like mother used to make. She made a small appearance in "Ghost Host" when the Flying Dutchman haunted him.
• Mr. Tentacles - Squidward's father. He was mentioned in "Krab Borg" When SpongeBob wanted to test if Mr. Krabs was a robot or not, he said that Squidward's father never hugged him. Squidward however said that his father loved him very much.

=Mr. Krabs' Family

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• Mama Krabs - Mr. Krabs' mother and Pearl's grandmother. The episodes that have featured her have shown her to be very strict and no-nonsense. In "Sailor Mouth", she made Mr. Krabs, SpongeBob, and Patrick repaint her pink anchor home as punishment for foul language, and in "Mid-Life Crustacean", she grounded her son for the night after he stole her bloomers. In Enemy In-Law, she also fell in love with Plankton once. She was voiced by Paul Tibbitt in her first two appearances, but was voiced by Sirena Irwin in her third appearance. She laughs like Popeye.
• Pearl Krabs - The teenage whale daughter of Mr. Krabs. She is popular at school, can be mean in a typical high-schooler way, and has the ability to cry very hard. She is often embarrassed by her father's lack of cool or "coral" (the Bikini Bottom teenagers' temporary way of saying "cool" which went out when Mr. Krabs began to say coral to be "young" again), depending upon the in-word of the week. In early episodes she seems to do things teenagers don't do, like tea parties, but later on, she starts acting more and more like a teenager. The difference between her and her father in terms of species has never been addressed; possible theories include that Mr. Krabs was once married to a whale or that Pearl was adopted, though these are mere speculation. In the episode "Whale of a Birthday", it can be proven that Pearl was not adopted, since Mr. Krabs had a banner for her since the day she was born (The banner said "It's a Boy", with boy crossed out and "girl" put in its place). Her favorite band is an all-boys band called "Boys Who Cry."

=Plankton's Family

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• Karen - Plankton's "computer wife". She is the brain to Sheldon J. Plankton, supplying him with plots. She is voiced by Tom Kenny's wife, Jill Talley.
• The Plankton Family - A large number of plankton hillbillies. They are relatives of Sheldon J. Plankton, and although they aren't the evil geniuses Plankton thought they were, they are still powerful in great numbers. They all seem to like root beer. Some of them are named:
  • Clem - Plankton's cousin, he doesn't know how to read.
  • Zeke
  • Rufus
  • Jeke
  • Billy Bob
  • Billy Jim
  • Billy Billy Bo Willy Banana Fana Fo Filly
  • Doug
  • Toad
  • Enos
  • Fletcher MaGee
  • Rainchild
  • Cleatus
  • Flem
  • Enis

=Mrs. Puff's Family

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• Mr. Puff - Mrs. Puff's deceased husband; he was turned into a lamp by a fisherman

=Sandy's Family

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• Pa- Sandy's father, who was refrenced in Sandy, SpongeBob, and the Worm. SpongeBob refered to him as "Pappy," but Sandy calls him "Pa".

Ancestors

Basic Prehistoric Era

These characters appeared in "SB-129":

• Primitive SpongeBob - SpongeBob's ancestor, before SpongeGar. He is one of the first jellyfishers.
• Primitive Patrick - Patrick's ancestor, before Pattar. He is one of the first jellyfishers.

Advanced Prehistoric Era

These characters appeared in "SpongeBob B.C. (Before Comedy)":

• SpongeGar - SpongeBob's ancestor, who looks like SpongeBob but without his clothes and with a five o'clock shadow.
• Gary - Gary's ancestor. SpongeGar's pet. About fifty times the size of modern Gary.
• Pattar - Patrick's ancestor. Large jaw and Neanderthal-like brow
• Squog - Squidward's ancestor.
• Crabs - A possible ancestor of Mr. Krabs. They run around saying "Money, money, money, money", which is all it can say. One was killed when SpongeGar sqashed it. Later in the episode, various of them appear when a rock is lifted.

Medieval Era

These characters appeared in "Dunces and Dragons (Lost in Time)":

• Squidly - Squidward's great-great-great-great-great-great-great-grandfather. King Krabs's royal fool, who curses his great-great-great-great-great-great-great-grandson to never be able to play the clarinet properly.
• King Krabs - Mr. Krabs's ancestor, the king of Bikini Bottomshire.
• Princess Pearl - Pearl's ancestor, the daughter of King Krabs.
• Planktonamor - Plankton's ancestor, an evil wizard. He is the rival of King Krabs.
• The Dark Knight - A possible ancestor of Sandy, a servant of the evil Planktonomor, but turns good after being defeated. She lives under the sea without an air helmet; how her descendants wound up in Texas is unknown.
• Karen - A possible predecessor of the modern Karen (or just Karen before being merged with a supercomputer). Instead of the modern computer, she (or, more accurately, it) is a crystal ball.
• Blacksmith - The ironman that made SpongeBob and Patrick's armor.
• Leech - A leech that is only shown in one scene, without a shell and sharp teeth.

Descendants

41st century

These characters appeared in "SB-129":

• SpongeTron - SpongeBob's descendant, works at the Krusty Krab which is still operating, even over 2 millennia later.
• SpongeTron's clones, each representing all 486 letters of the future English alphabet. They enjoy jellyfishing.
  • SpongeTron X
  • SpongeTron Y
  • SpongeTron Z
• Pattron - Patrick's descendant. He is two-headed and likes jellyfishing just like his ancestor, Patrick.

Mermaid Man and Barnacle Boy Characters

• Mermaid Man - A semi-retired superhero who lives in the retirement home Shady Shoals. He is older than Barnacle Boy. He forgets many things at times and he enjoys sleeping, watching TV and playing Bingo. He is voiced by Ernest Borgnine.
• Barnacle Boy - Semi-retired superhero, who is Mermaid Man's sidekick, and he also lives at Shady Shoals retirement home. In the episode "Mermaid Man and Barnacle Boy V", he changes his name to Barnacle Man. This was not a permanent change; in " The Motion Picture", he is Barnacle Boy again. According to Battle for Bikini Bottom, he has a son, a daughter-in-law, and four "screaming" grandchildren. Barnacle Boy is old (68 years old). His real name was revealed to be Kyle. He is voiced by Tim Conway.
• Atomic Flounder - A retired villain who can blast hot radioactive beams from his mouth. He was in "Mermaid Man and Barnacle Boy II". Capable of third degree burns from his beams, speaks with a Kennedy-esque New England accent.

• Dirty Bubble - A giant dirt bubble who is Mermaid Man and Barnacle Boy's arch nemesis. For some odd reason, he enjoys making his enemies eat dirt. Dirty Bubble first appears in Mermaid Man and Barnacle Boy II, where he tries to capture the heroes, who attempt to ditch SpongeBob. He has successfully captured the two, before SpongeBob pops him with a pencil. Later, in Mermaid Man and Barnacle Boy V, Dirty Bubble is brought back by Man Ray. In the episode, Man Ray has teamed up with him to form an organization called EVIL (Every Villain Is Lemons). When Barnacle Boy tires of Mermaid Man treating him like a little kid, he joins the two, and commits crimes. In the end, Barnacle Boy returns to the good side, and the two villains are arrested.
• Jumbo Shrimp - One of Mermaid Man and Barnacle Boy's rivals. From Mermaid Man and Barnacle Boy II. Once referred to (perhaps mistakenly, or in reference to a different villain) as "The Killer Shrimp" by the Dirty Bubble.
• Kelp Thing - One of Mermaid Man and Barnacle Boy's enemies. Seen in Mermaid Man and Barnacle Boy VI. "I've got to do what I do." He parks his villian car in no parking zones, but Mermaid Man and Barnacle Boy tow his car away.
• Sneaky Hermit - A super hermit crab who is one of Mermaid Man and Barnacle Boy's enemies. He plans to rule the world by means of sneakiness. He steals buildings in a sneaky fashion. His weakness is pepper. Seen in Lights, Camera, PANTS!. In the New Adventures of Mermaidman and Barnacleboy episode in that game, he called Man Ray, Moron Ray and the Dirty Bubble, the Dopey Bubble.
• Snorelonn - An enemy of Mermaid Man and Barnacle Boy. Only mentioned in Nickelodeon Magazine, in the special SpongeBob issue. Apparently his evil plan is to wake everyone up with loud snoring noises. SpongeBob and Patrick were playing Mermaid Man and Barnacle Boy and said that Squidward was Snorelonn. Snorelonn also plans to eat them and suck out their brains with a turkey baster.
• Man Ray - Man Ray was first mentioned in Mermaid Man and Barnacle Boy by Spongebob when he's trying to get Mermaid Man and Barnacle Boy to come out of retirement. He later appears in person in Mermaid Man and Barnacle Boy III, where SpongeBob and Patrick released him from tar-tar sause. When he discovers that he has a tickle belt, Man Ray tricks the duo to teach him kindness. After the class, Man Ray grabs two devices from Mermaid Man and Barnacle Boy to take over Bikini Bottom. When he discovers that he has become good, he quits villainy. It is also revealed that Man Ray doesn't really have a head. His head is made up of his mask/shoulder pads combo and is headless underneath that. Later, in Mermaid Man and Barnacle Boy V, he becomes evil again, and brings back the Dirty Bubble and they team up with Barnacle Boy (who became evil) to form an organization called EVIL (Every Villain Is Lemons). At the end, Barnacle Boy becomes good again, and, Man Ray is taken to jail with Dirty Bubble. John Rhys-Davies voices Man Ray.
• Prawn - Once of Mermaid Man and Barnacle Boy's enemies, Prawn turned Mermaid Man's socks pink. SpongeBob had once defeated him though.
• Reflecto - An enemy of Mermaid Man and Barnacle Boy. Squidward was mistaken for Reflecto when SpongeBob and Patrick were playing Mermaid Man and Barnacle Boy.
• Sinster Slug - One of Mermaid Man and Barnacle Boy's Arch rivals. From "Mermaid Man and Barnacle Boy II".
• Dr. Octofish - An enemy of Mermaid Man and Barnacle Boy. Barnacle Boy used his paddleball of fury to break this villain's concentration. Mentioned in Lights, Camera, Pants! Possibly the villain at the beginning of Mermaid Man and Barnacle Boy. "Doctor Octofish" is a possible parody of Doctor Octopus from Spider-Man.
• EVIL - An organization of supervillains. It stands for "Every Villain Is Lemons".
• IJLSA - An organization of superheroes. It stands for "International Justice League of Super Acquaintances", as a parody of the Justice League and other superhero societies. Other than Mermaid Man, it contains:
  • The Quickster - Able to run at high speeds. SpongeBob temporarily held the position. A parody of the Flash.
  • The Elastic Waistband - Able to stretch himself to several times his normal size. Patrick temporarily held the position; this hero is a satire of Mister Fantastic of the Fantastic Four.
  • Captain Magma - Has a volcano on the top of his head from which he can shoot lava. Squidward temporarily held the position. A parody of the Human Torch.
  • Miss Appear - Able to become invisible. Sandy temporarily held the position. A version of Invisible Woman, part of the Fantastic Four.

Animals and Other Creatures

• Worms
  • Alaskan Bull Worm - A giant pink worm. Described as "Big, Scary, and Pink!" It appeared in the episode, "Sandy, SpongeBob, and the Worm". Has a tongue that could pass for a worm, as Sandy mistakenly found out when she caught the tongue and tied it in a knot.
  • Mr. Doodles - Mr. Krabs' pet worm. He was first shown in "Sandy's Rocket," but his name was first introduced in "As Seen on TV."
  • Rex - A bluish green worm adopted by SpongeBob to replace Gary in "Dumped"; ends up ditching SpongeBob in less than 10 seconds when he appears on a bus.
  • Guardworm -A very vicious worm with a black chain collar, it lived in the junkyard and attacked whomever got close to the bed it was lying on Mr. Krab's matress of money, and foiled SpongeBob and Patrick's every attempt to get the matress, however Mr. Krabs just shakes it off.
• Non-Aquatic Creatures
  • Birdy - A bird who is one of Sandy's pets. Gets fed twice a day.
  • Cricket - A cricket who is one of Sandy's pets.
  • Snakey - A snake who is one of Sandy's pets. Eats mice.
  • Wormy- -A caterpillar who is one of Sandy's pets. Befriended SpongeBob and Patrick in "Wormy". Wormy turned into a butterfly and caused a major disaster since the citizens of Bikini Bottom thought it was a monster.
• Jellyfish - Creatures who wander around Jellyfish Fields.
  • King Jellyfish - A large purple jellyfish with a crown. It is attracted to queen jellyfish and very much enjoys pie. Its scientific name is Cnidaria rex.
  • No name/Friend - A blue jellyfish that was later renamed "Friend". The last jellyfish SpongeBob ever caught. Creates blue jelly.
  • Queen Jellyfish - A large pink jellyfish that appeared in the episode, "Jellyfishing". In "I'm Your Biggest Fanatic", there is a robot version of this jellyfish.
  • Twelvy - A jellyfish that was named by SpongeBob in the episode, "Jellyfish Hunter".
  • Big Lenny - Apparently the most dangerous jellyfish in the world, with nearly every sting being fatal. However, Doctor Mannowar actually lived through it, and is the only person to ever accomplish this so far. Big Lenny is seen in "I'm Your Biggest Fanatic" as a picture and in the PC game "Operation Krabby Patty" during the jellyfishing game with Sandy and Patrick.
• Snails
  • Jerry - A realistic-looking snail pulled out of SpongeBob's pocket in "Dumped".
  • Lary - A pale purple snail adopted by SpongeBob to replace Gary in "Dumped"; is very rude and selfish with big bushy black eyebrows and a tan shell.
  • Lightning Larry Luciano - An old snail with a moustache that appeared in the episode, "The Great Snail Race". He is snail racing's 1st champion.
  • Snellie the Snail - Squidward's pet. First appeared in "The Great Snail Race". She fails Squidward in the race and loses to Patrick's rock. She appears again in "The Sponge Who Could Fly" as Mrs. Puff's pet.

• Clams/Scallops/Shells
  • Junior - The orphaned scallop adopted by SpongeBob and Patrick in "Rock-a-Bye Bivalve".
  • Shelly - SpongeBob's pet scallop. Not to be confused with the one from "Rock-a-Bye Bivalve". SpongeBob keeps it in a bird cage in his bedroom. Its name was revealed in SpongeBob: The Complete 1st Season.
  • Magic Conch Shell - Seen in "Club SpongeBob". The Magic Conch Shell is a toy, where you pull the string and it gives an 'answer'.
• Wildlife
  • Mystery - A wild green seahorse that likes to eat anything. Adopted by SpongeBob, but later she was let free.
  • Nematodes - Very greedy worms.
  • Polka-dot Dolphin - A dolphin among other things which SpongeBob and Patrick search for when Squidward creates a treasure hunt for them, to distract them while he practices clarinet. He says that if they find every item he lists, then he would play alarm clock pass with them, even though he is sure they will never find a polka-dot dolphin. At the end they do find one and Squidward is forced to play. This appears in the sound board book SpongeBob SquarePants Find It!.
  • Sea Bear - A large fish with clawed fins and the head of a normal bear. The majority of Bikini Bottom's inhabitants (most notable being Squidward) do not believe in the sea bear's existence; however, SpongeBob and Patrick are fervent believers, having read about them in the Bikini Bottom Enquirer (Article: I married a sea bear) and Fake Science Monthly (Article: sea bears and fairy tales are real). There is a wide range of things that can anger a sea bear, including: Playing the clarinet badly, Waving a flashlight around (flashlights are their natural prey), Eating cheese (cubed, sliced is fine), Stomping around (they take that as a challenge), Wearing a hoop skirt, clown shoes or a sombrero in a goofy fashion (such as upside down), Screeching like a chimpanzee, Running, Limping (they hate that more than running), and Crawling. The only thing that can prevent a sea bear attack is an anti-sea bear circle (but it has to be a circle, an oval will just cause a sea bear to attack you). The sea bear that appears in "The Camping Episode" takes an immediate dislike to Squidward, after he unwisely does everything that SpongeBob and Patrick warn against. It also attacks him simply because it doesn't like him.
  • Sea Rhinoceros - A fish with horns, these creatures are bigger and meaner than Sea bears and are attracted by sea bear attacks. The only way to protect yourself from a sea rhinoceros is to wear anti-sea rhinoceros undergarments.
• Insects
  • Kelp Forest Bug ("Club SpongeBob")
  • Fly
• Other
  • Bubble Buddy - A sentient soap bubble created by SpongeBob when he felt alone. Appeared in "Bubble Buddy". He also appears in the video game Battle for Bikini Bottom, teaching SpongeBob new bubble moves. Also, Bubble Buddy has been down Flounder Hill, on Sand Mountain. Bubble Buddy likes bendy straws, funny jokes, and diet shampoo. He doesn't like bun crust. He is lactose intolerant, and is naturally nervous around pointy objects. His birthday is October 9th.
  • DoodleBob - A crude drawing of SpongeBob that came to life in "Frankendoodle". He was a psychotic 2-D drawing created by SpongeBob, as the means to play a prank on Squidward. The story goes that an artist in the Pacific Ocean dropped his pencil in the water. It landed in Conch Street, Bikini Bottom, and came into the hands of residents SpongeBob and Patrick, who discovered its weird and wonderful abilities to bring its user's works of art to life. SpongeBob then drew a crude self portrait, which he christened Doodlebob. Doodlebob proceeded to commit various atrocities (e.g. beating up Squidward, trapping SpongeBob and Patrick in a hole) before being partially destroyed by his creator via rubbing him out with the eraser. However, the arm survived. It tracked down SpongeBob and the "magic pencil", drew himself (adding a pair of eyebrows) and then tried to kill SpongeBob. After rubbing out SpongeBob's behind and destroying part of the pineapple, he was 'killed' after sticking back into a piece of paper. SpongeBob later described him as: "...a two-dimensional creature, lost in our three-dimensional aquatic world, longing for a purpose." He also appears in the non-canonical Nicktoons Unite! video game as one of SpongeBob's moves in the GameCube version.
  • Rockie - Patrick's pet snail, whom he entered in "The Great Snail Race"; Rockie appeared to actually be a rock, but managed to overcome this setback to win the race.
  • Roger - An unhatched chicken in "New Student Starfish". He eventually hatches at the end, saying in a voice reminding of Don Knotts-"Hey, what'd I miss?"
  • Octozilla - A giant, mutated, prehistroic, reptillan octopus-like monster with ten long tentacles, a dark greenish-purple body and sharp dorsal fins like sharks, created by Plankton. He is really indestructible and able to shoot a fiery, electrical, radioactive lava-like substance, which melts buildings and objects. His weakness is Krabby Patties. Octozilla is a spoof of Godzilla.
  • Superimposed Donkey - appeared in Christmas Who? to provide an editorial opinion about Squidward's behaviour.

Townspeople

Characters with Jobs

• Bikini Bottom Judge - The one who judged the Krabs and Plankton case. Seen in "Krabs vs. Plankton"
• Carl the Fish - Once was a manager of the Krabby O' Mondays. Seen in "Selling Out".
• Doctorfish - Doctor who works in the Bikini Bottom hospital. He has appeared in "I Was a Teenage Gary"; "Born Again Krabs"; "Band Geeks"; "No Weenies Allowed"; "I Had An Accident"; "Squid's Day Off"; "The Bully"; "Suds"; "Once Bitten", and some other episodes. He is voiced by Rodger Bumpass.
• Frank - He is an orange fish who's name is revealed in "Dying for Pie". Also the name of the owner of the Prank Shop who gives SpongeBob the Invisible Spray.
• Fred - A dark-green fish who says "MY LEG!" and "MY EYES!". His name is revealed in "Patty Hype". He is a janitor at Shady Shoals resthome. He regularally visits the Krusty Krab on his lunch break, and he was the first customer to try SpongeBob's, "Jelly Patty."
• Hans - Hans wears a navy blue officer's jacket with gold trimmings. His arm appears occasionally to move SpongeBob, or to attempt to eat Mr Krabs.
• Lou - A tall yellow fish, with an apron and hat. He is the cashier at the Barg 'n' Mart, he also sells treats at the Goo Lagoon and The Fry Cook Museum. His name was revealed in Party Pooper Pants.
• Mailfish - Delivers the mail in Bikini Bottom.
• Mario - Works at Pizza Castle.
• Mayor - The Mayor of Bikini Bottom. Opens unfinished bridges and attends snail races.
• Officer Nancy O'Malley - A policefish.
• Perch Perkins - The news anchorman for the Bikini Bottom News.
• Peterson - A yellow fish with purple fins that works at Snailpo and other places. Although he works there, he is usually seen on the street. His name was revealed in the episode, "Missing Identity".
• Tom - A green fish who serves as bartender somewhere at Goo Lagoon. He is also the cameraman for the Bikini Bottom News. He even has another job, which is a Mattress Salesman at "Mattress Discount." His name is revealed in "Patty Hype". He was seen in Chocolate With Nuts as the Crazy Customer. He is also the very first one ever to get a Krusty Krab Pizza.
• Think Tank! Host - The unnamed host of "Think Tank!", a Jeopardy! parody. His name is a mystery. Only appeared in the Story Reader book Grand Prize Winner!. He is voiced by John Sterchi.

Characters on the Street

• Bubble Bass - An obese, snobby, geeky, picky fish who undermines SpongeBob's confidence in "Pickles" and first sits on, then nearly eats Plankton, mistaking him for a jellybean in "F.U.N.". Similar to Comic Book Guy from The Simpsons
• Dennis - A light brown fish with glasses that went to elementary school with SpongeBob. He is not to be confused with Dennis the Hitman.
• Don Funny - Joe's brother. Don was sitting next to Joe when he's saying "WHAT THE?!". Don threw tomatoes at Squidward along with Joe.
• Donald - A ochre fish.
• Evelyn - A pink fish whose name was revealed in "Band Geeks". She reguarally visits the Krusty Krab and Goo Lagoon. She is one of Pearl's friends.
• Flatts the Flounder - A student in SpongeBob's boating school class who wants to "kick SpongeBob's butt". He is also Patrick Star's college buddy. Voiced by Thomas F. Wilson of the Back to the Future trilogy.
• Grubby Grouper - A world famous surfer who has dirty hands. He was voiced by Corky Caroll.
• The Hash Slinging Slasher - A monster made up by Squidward when he was on the night shift with SpongeBob to scare him. He is revealed later in the episode as a teenager looking for a job at the Krusty Krab.
• Jimmy - Son of Evelyn
• Joe Funny - The funny fish who says/exclaims/asks "WHAT THE?!". He appears briefly in "Culture Shock" as one of the audience members.
• Monroe - Young fish who is lifted up by Mr. Krabs the episode, "Krabby Land". He wears a hat with a propeller on it.
• Nancy - A fish with white hair. Her name was revealed in "Mermaid Man and Barnacle Boy V". She visits the Krusty Krab regularly, and is one of Pearl's friends.
• Old Man Jenkins - Usually an older fish (although his appearance varies between some episodes) and is usually randomly introduced by some character. He is prominently featured in the episode "The Sponge Who Could Fly". He was voiced by Mr. Lawrence in "Sailor Mouth", Tom Kenny in "My Pretty Seahorse" and Dee Bradley Baker in "The Sponge Who Could Fly".
• Phil - He is the customer that didn't get cheese on his Krabby Patty in the movie. His name was revealed in the movie as well. Has a wife and two children.
• Reggie/Reg - A tough fish. He serves as the bouncer for the Salty Spitoon.
• Granny - She temporarily treated Gary like a pet, until he found out her secret. Seen in "Where's Gary?" and voiced by Amy Poehler.
• Scooter - A surfer fish who is lavender. He died in the episode, "Bubble Buddy" because he 'experienced high tide', but he lived again in the episode, "Squirrel Jokes". His catch phrases include "That was awwwwwsome!" and "Duuuuude." He was also seen in the episode "Ripped Pants". He enjoys surfing and participating at the Annual Hotdog Chug at Goo Lagoon. He is also seen at the Krusty Krab.
• The Tattletale Strangler - When SpongeBob turns him in, he tries to get revenge by strangling SpongeBob while posing as a bodyguard, but SpongeBob proves to be too annoying. His phone number is 555-1220.
• Jimmy - Boating School Student
• Phil - Boating School Student
• Tina - Boating School Student
• Beth - Boating School Student, graduated
• Henry - Boating School Student
• Vera - Boating School Student
• Clayton - Boating School Student
• Billy Fishkins - Anchovie High Schooler
• Brian Flounder - Anchovie High Schooler
• Oxtavious Rex - High Schooler, Pearl's ex-boyfriend
• Judy - High Schooler
• Dan - Fish who received roses from SpongeBob on Valentine's Day.
• Billy - A kid who picked up Plankton's tractor and thought it was a toy
• Billy's mother - Said the Toy Tractor had germs
• Janet - Fake mother to Patrick. Voiced by Clea Lewis. She and Marty came to Patrick's house for Starfish day thinking they were Patrick's parents.
• Marty - Fake father to Patrick. Voiced by Thomas F. Wilson. He and Janet realize they don't have a son when Patrick's real parents come.
• James B. Wilson - Health Inspector
• Mary - An old lady who was complemented on her youthfulness, somewhat unsuccessfully, by SpongeBob. She hates her VERY old mother. Later taken on a date by Patrick. ("Chocolate with Nuts")
• Mary's Incredibly Old Mother - Resembling a prune on a purple carrot, this extremely cantankerous monstrosity bought chocolate, believing it would improve her longevity. She hates her old daughter, believing she (Mary) wants her dead. ("Chocolate with Nuts")
• Gorilla: Frank Welker in a gorilla costume. ("I Had an Accident")
• George - A zebra. Dee Bradley Baker in zebra costume. ("I Had an Accident")
• Chip - A potato chip. One of SpongeBob's 'indoor' friends. Only Half of him eaten by Gary. Is responsible. ("I Had an Accident")
• Penny - A penny. One of SpongeBob's 'indoor' friends. Has a beautiful voice. ("I Had an Accident")
• Used Napkin - A used napkin. One of SpongeBob's "indoor" friends. Is a name caller. ("I Had an Accident")
• Howard Blandy - Bought the Krusty Krab in "Selling Out". He is the President of the Blandy Franchising Company. His phone number is (555) 123-7213
• Richard B. Bottomfeeder - Lawyer who worked on Mr. Krabs' case when Plankton sued him in "Krabs vs. Plankton".
• Dirty Dan and Pinhead Larry - Sandy was dreaming about Dirty Dan and Pinhead Larry in "Survival of the Idiots". They are criminals that the dreaming "Sheriff Sandy" was trying to catch. In sleepwalking episodes, Sandy mistook SpongeBob and Patrick for Dirty Dan and Pinhead Larry.

Characters not from Bikini Bottom

• Doctor Mannowar - He was stung by Big Lenny and lived. The sting only hurts if you touch it. Seen in "I'm Your Biggest Fanatic".
• Other SpongeBob(AKA The Drifter) - Appeared briefly in the episode "No Weenies Allowed". Has black Elvis Presley-type hair and acts a lot cooler than SpongeBob.
• Iron Eye - Nickname given to one of Mr. Krabs' naval buddies. His eye is actually made of Formica.
• Kevin C. Cucumber - A sea cucumber who is the leader of the Jellyspotters. He was seen in "I'm Your Biggest Fanatic". He later appeared in Lights, Camera, PANTS! as the host of finding the hunter role.
• Lockjaw Jones - Nickname given to one of Mr. Krabs' naval buddies. His teeth are different at the reunion compared to the teeth in the navy.
• Miss. Shell - SpongeBob's Kindergarten Teacher
• Monty P. Moneybags - A museum owner who collects art to put in his museum. He appeared in "Artist Unknown".
• Muttonchop - Nickname given to one of Mr. Krabs' naval buddies. His muttonchops are actually fake.
• Nosferatu - The classic vampire that had been flicking the lights on and off at the Krusty Krab, as seen in "The Graveyard Shift"
• Orville - A Tentacle Acres security guard
• Rock Bottom Bus Manager - He stole SpongeBob's candy. Later in a commercial on Nickelodeon, during The SpongeBob SquarePants Movie, SpongeBob jumped over his head while he was eating at the Krusty Krab.
• Tentacle Acres Octopi - A group of octopi who seem to act a lot like Squidward. Squidward is bored by them when he moves into Tentacle Acres and goes crazy.
• Torpedo Belly - Nickname given to one of Mr. Krabs' naval buddies. His torpedo was surgically removed.

Other characters

• Anchovies- There are various anchovies in Bikini Bottom. Some are part of the Jellyspotters, led by Kevin C. Cucumber. They mostly say meep. ("Help Wanted")
• Ice Cream Vendor - Orange with blue in the face, works at Goo Lagoon and runs the Ice cream vendor. ("Ripped Pants")
• Torquoise Fish - Seen at Goo Lagoon eating a burger. ("Ripped Pants")
• Goo Lagoon Fry Cook - Works in a kitchen at Goo Lagoon making burgers and hotdogs. (Ripped Pants)
• Goo Lagoon Lifeguard Fish - Aqua fish, who is another lifeguard at Goo Lagoon. ("Ripped Pants")
• Aqua/Lavender Fish - Fish who got sand in their buns. ("Ripped Pants")
• Black/White Whale - Was buried in the sand and forgotten in "Ripped Pants".
• Dinosaur - Asked for a job application for the Krusty Krab. He was the one who called on the phone and on the bus, parts 2 and 3 of the Hash-Slinging Slasher story. Voiced by Dee Bradley Baker.
• Ambulance drivers
• Truck Driver - Drives a semi-truck on Pizza Delivery.
• Staff at Shady Shoals Retirement home
• Old Man - Wrote the memoirs of his life in red ink; a deluge of cranberry juice ruined his hard work. He lives at Shady Shoals Retirement Home.
• Bikini Bottom Realtor - Realtor that almost sold Squidward's house on "Opposite Day"
• Scuba Diver - Played imported music at the Fancy! restaurant
• Old Man - Winked and gave a thumbs-up when SpongeBob complimented old folks.
• Family - Saw the episode "I Had an Accident", didn't get it, and turned the TV off
• Bikini Bottom Police Officers
• Anchor Arms Television Advertiser
• Referee - Refereed the Anchor Toss Competition at Goo Lagoon. He kept getting hit by anchors.
• LongTan and Handsome - The wanted cutie fish at Pearl's Prom.
• Chrome Painter - Sprays plants in 41st century Bikini Bottom
• Ancient Creatures - Various Creatures in "SB-129"
• Fisherman - A fisher at the Bikini Bottom park
• Hot Sauce Drop Said "I command this perticular drop of hot Sauce to be really, really HOT!!!" in Karate Choppers. The face inside is actually Tom Kenny, SpongeBob's Voice.
• King - The king Squidward was performing for in his dream in "Sleepy Time".
• Hans - Realistic hand
• Green Eel- The eel who cut in front of SpongeBob at the ice cream vendor at Goo Lagoon. Later Plankton made SpongeBob make the eel cry "tears of joy." Seen in "Walking Small".
• Fish with broken metal detector - He asked to use SpongeBob's metal detector at Goo Lagoon. He found treasure in a ditch and he wears sandles. Seen in "Walking Small".
• Octopus Vendor - An octopus who works at a burger/hot dog stall at Goo Lagoon.
• Bikini Bottom Firefighters
• Mrs. Crossing Guard Fish - Crossing Guard in Bikini Bottom. Seen in "Something Smells"
• Tuba player - Band fish seen in "Something Smells"
• Drummer - Band fish seen in "Something Smells"
• Guy with the cymbals - Band fish seen in "Something Smells"
• Trumpeter - Band fish seen in "Something Smells"
• Tamborine girl - Band fish seen in "Something Smells"
• Timpani man - Band fish seen in "Something Smells"
• Didgeridoo player - Band fish seen in "Something Smells"
• Triangle player - Band fish seen in "Something Smells"
• Guy with the kettle drum - Band fish seen in "Something Smells"
• Pianist - Band fish seen in "Something Smells"
• Guy with the flute - Band fish seen in "Something Smells"
• "thing" - Creature that was sticking to SpongeBob's chest in "Something Smells"
• Pirates - Sell bomb pies on "Dying for Pie"
• Balloon salesperson
• Santa Claus - Seen in "Christmas Who?"
• Bank Teller
• Seagulls
• Zookeepers
• People in perfume department on the Dutchman's ship
• Artist - Human who dropped his pencil into the ocean, falling into Bikini Bottom. Played by Mr. Lawrence.
• Fancy! Waiter - The waiter at the Fancy! restaurant
• Scuba diver pianoist - The "imported music" in "Krusty Love"
• Janitor - The janitor at the school where Squidward was teaching art at. Monty P. Moneybags called him "The Greatest Artist Who Ever Lived".
• Fry Cook Games torch lighter - Lit the torch at the 21st Fry Cook Games. The flame went out when he first lit it, and he was burned at his second attempt to light the torch.
• Fry Cook Games fishsticks vendor
• Fisherman
• Shark Family
• Sea Monster
• Picnic Supply Inc. Pilot ("Club SpongeBob")
• Picnic Supply Inc. Co-Pilot ("Club SpongeBob")
• Magic Conch Club Member - A Ranger of the Kelp Forest, he is a member of the Magic Conch Club. ("Club SpongeBob")
• Delivery fish
• Smitty Werben Jeger Man Jensen - Is dead, he was number one in his lifetime. Buried in Floater Cemetery. ("One Krabs Trash")
• Hat Collectors - Collectors that offered Mr. Krabs big money for a hat. ("One Krabs Trash")
• Clown
• Robot - Waiter at Weenie Hut Jr's ("No Weenies Allowed")
• Supervisor SpongeBob - Clever visual metaphor used to personify the abstract concept of thought in SpongeBob's mind. ("Squilliam Returns")
• Worker SpongeBobs - As above. One of them has a wife and kids. ("Squilliam Returns")
• The Appetiser - Mr Krabs' unfortunate attempt at cooking, which proceeded to attack guests.
• The Birdbrains - Band that Potty the Parrot hired at Patchy's house party.
• Boy scout fish
• Nurses at Hospital
• Mattress salesman - Helped SpongeBob and Patrick find a new mattress for Mr. Krabs
• Plankton's Giant Robot Appeared in Enemy in Law. He took citizens hostage and "forced them to eat at the Chum Bucket."
• Theripist
• Not Lisa was seen in "Have You Seen This Snail? (Where's Gary?)" when Patrick changed the message, "Gary Come Home" into "Lisa, will you marry me?" then said "Who is this Lisa person?" then slapped her boyfriend
• Not Lisa's boyfriend
• Comedy Drummer - appeared in Pre-Hibernation Week to alert us to Sandy's bad pun about fly-fishing.
• German Man With Incredibly Muscly Body - agrees with SpongeBob in Life of Crime about running being good for one's buns and thighs.
• Disembodied Voices - paradoxically tell Squidward that he is alone in SB-129.
• Kids of Monkey Lagoon - The kids featured in The Seven Trials of Monkey Lagoon in [the sponge who could fly the lost episode.
• Random Human Who Called Patchy "Barfy the Pirate" Was Featured in the Commentary of Lost In sea, Was seen after the 6th trial when patchy was on a Roundabout. Wasn't acting.

Movie Characters

• King Neptune - He is the god of the sea (played by Jeffrey Tambor in the movie. John O'Hurley voices him in the episode "Neptune's Spatula".)
• Princess Mindy - King Neptune's mermaid daughter, she urges her father to rule with compassion. Her voice was provided by Scarlett Johansson. Mindy the Mermaid is very hopeful. She asked her dad (King Neptune) to stop being so selfish. A spoof of Ariel who is King Triton's daughter in The Little Mermaid.
• Cyclops - The evil scuba diver who took SpongeBob and Patrick to a gift shop to sell them as novelties.
• David Hasselhoff - The actor from Baywatch. Helps SpongeBob and Patrick make it back to Bikini Bottom in time.
• Dennis The Hitman - The cold blooded predator hired by Plankton to get rid of SpongeBob and Patrick. Voiced by Alec Baldwin.
• Goofy Goober - A large goofy sea peanut, and namesake of the place where "Goofy Goober's Ice Cream Party Boat" SpongeBob drowns his sorrows in after failing to get the manager's job at The Krusty Krab 2. "Goofy Goober's" is a spoof of "Chuck E. Cheese's"
• "The Bubble-blowing Double Baby" - Two brown conjoined twins that go to the Thug Tug. They got beaten up because they sang the Goofy Goober Theme Song.
• Ice-cream old lady - A long bump on a monster's tongue. She's also a "fake". SpongeBob got his hands stuck on a "fake" ice cream bowl because she gave him the ice cream. She has a cat-shaped bump as a pet.
• Royal Crown Polisher - Polishes Neptune's crown; He was almost sentenced to 20 years in the Dungeon, until Mindy freed him.
• Squire - Neptune's Squire
• Goofy Goober Clock - Clock that presents the Goofy Goober Peanut guy
• Waiter - Waiter at the Goofy Goober
• Clay - The guy who sold Neptune's crown to Shell City
• Hillbilly - One of the Gas station employees who insulted SpongeBob, Patrick, and Dennis.
• Lloyd - The other Gas station employee who insulted SpongeBob, Patrick, and Dennis.
• Trench Monsters - Live in the giant trench that SpongeBob and Patrick had to cross in the Movie. Tried to Eat SpongeBob and Patrick until they proved their "manliness," later followed SpongeBob and Patrick, but later got offended at SpongeBob's remark about "hideous monsters."
• Pirates
• Parrot

Employee of the Month Game Characters

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Characters with Jobs

• Big Mac the Bartender - A big, muscular fish that serves as the bartender of The Rusty Anchor.
• Eugene - A blue fish with eyeglasses who works at the Barg 'n' Mart.
• Frederique the Waiter - A lobster with a moustache that serves as the waiter of Sublime Seafoods. He thinks Bikini Bottom is a despicable place.
• Gary Gulper - A gulper eel that serves as the weatherman of WSEA TV.
• Lisa the Coat Check Girl - A fish that serves as the coat check person of Sublime Seafoods.
• Jojo the Repairman - An orange fish that serves as a repairman.
• Marlin the Weather Wizard - A blue marlin that controls the weather.
• Marty the Bus Driver - A fish that drives buses.
• Nelson - A green fish with sunglasses that owns Sardine's Sundries.
• Ray - A brown ray that owns Ray's Tanning Salon.
• Shapiro the Maitre'd - A shrimp that serves as the maitre'd of Sublime Seafoods.
• Stella - A gray fish that works at the Diner.
• Timmy - A fish that works at the Mezzanine.
• Tony the Bouncer - A small, green fish that serves as the bouncer of Sublime Seafoods.

Characters on the Street

• Dame Mackarel - A fish that comes from England.
• Leonard - A blue anchovy with a red shirt that has a lot of twin brothers. Petro and Ryan being two of them.
• Petro - A blue anchovy with a red shirt that has a lot of twin brothers. Leonard and Ryan being two of them.
• Ryan - A blue anchovy with a red shirt that has a lot of twin brothers. Leonard and Petro being two of them.

Residents of Waverly Hills

• Carlton Ritts - A fish that lives in a golden mansion. He has a tree that grows golden coconuts.
• Cowfish Craig - A cowfish that lives in a shack. He is a friend of Sandy.

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