Recurring and guest characters • '''''' (voiced by
Betty White) is the owner of Grandma's Apron, the store where Pearl goes to work in "Mall Girl Pearl". An older woman, Beatrice convinces Pearl not to let her teenage friends make fun of her job. • ''''
(voiced by Bob Barker) is the director of an animal rescue center where snails escaped from to find SpongeBob in "Sanctuary!" He delivers the "have your pets spayed and neutered" line Barker used to close his game show The Price Is Right''. • '''''' (voiced by Brad Abrell) is a humanoid bubble created by SpongeBob in "Bubble Buddy". His apparent inanimateness annoys other people of Bikini Bottom, but he is later revealed to be a sentient being before moving out of the town in a taxi-shaped bubble. He later returns in the season 8 episode "Bubble Buddy Returns", having been found to live in Bubbletown, a city made completely out of bubbles. • '''''' (voiced by
Jeff Garlin) is a giant, bowtie-wearing hamster from the eponymous episode who can only be seen whenever someone ingests a rotten Krabby Patty. • ''''
(voiced by Paul Tibbitt) is a drawing created by SpongeBob in his image using a human pencil, which is seemingly able to animate anything it draws. He speaks through unintelligible phrases. He appears in "Frankendoodle". He returned later in "Doodle Dimension", torturing SpongeBob and Patrick in a doodling dimension. He also featured as the main villain to defeat in the Drawn to Life: SpongeBob SquarePants Edition'' video game. In "Captain Pipsqueak", DoodleBob made a cameo among the villains auditioning to join E.V.I.L. • ''''
(voiced by Thomas F. Wilson) is a green flounder who had several silent cameos in various season 1'' episodes before appearing as the new student at Mrs. Puff's Boating School in "The Bully". He wants to kick SpongeBob's "butt" for no apparent reason and SpongeBob takes it as if Flats wants to murder him. He also appears during the credits of
The SpongeBob Movie: Sponge Out of Water • '''''' (voiced by
Ian McShane) is the leader of a band of Vikings who kidnap SpongeBob and Squidward in "
Dear Vikings". Except for himself, all of his crewmen are named "Olaf". In "Captain Pipsqueak", Gordon made a cameo among the villains auditioning to join E.V.I.L. • '''''' (voiced by
Amy Poehler) is an elderly fish who appears in "
Have You Seen This Snail?". She finds snails and force-feeds them so that she can eat them and lock their shells in a closet. She adopts Gary, who was lost in an alley, as her latest victim, but he manages to escape. • The
Ice Cream Man (voiced by
Tom Kenny in most appearances,
Dee Bradley Baker in
The SpongeBob SquarePants Movie,
Mr. Lawrence in "My Friend Patty") is a bartender in a peanut mask who works in Goofy Goober's Ice Cream Boat. In
The Patrick Star Show, the Ice Cream Man is shown to operate an ice cream boat trick that Patrick often targets. • '''''' (voiced by
Johnny Depp) is a legendary human-like surfer who appears in "SpongeBob SquarePants vs. The Big One". He teaches SpongeBob and his friends how to surf so they can go back home and fend off from a legendary tidal wave known as the Big One. • '''''' (voiced by
Patton Oswalt) is the Krusty Krab's original fry cook, as revealed in "The Original Fry Cook". His cooking is legendary throughout Bikini Bottom, and he is shown to be an even better chef than SpongeBob. Jim left the Krusty Krab after Mr. Krabs declined to provide him with a higher salary. • '''''' (voiced by
Biz Markie) is a gray tomcat from the eponymous episode who claims he can hold his breath underwater. He is idolized by SpongeBob until it is realized that Kenny requires an oxygen tank to breathe. After the ruse was exposed by Sandy, SpongeBob got him to continue his goals by putting him in one of Sandy's diving suits. • '
(voiced by David Bowie), also referred to as LRH', is the king of
Atlantis in "
SpongeBob's Atlantis SquarePantis". He invites SpongeBob and his friends for a visit to Atlantis after they find the lost piece of the coin, but eventually regrets it since they (especially Patrick) end up popping the longest living bubble accidentally with a camera flash. • ''''
(voiced by Kristen Wiig in "The Curse of the Hex", Jill Talley in "Terror at 20,000 Leagues" and "Captain Pipsqueak") is a fish and an expert witch. In "Captain Pipsqueak", Madame Hagfish is among the villains auditioning to join E.V.I.L. In The Patrick Star Show'' episode "Terror at 20,000 Leagues", Madame Hagfish runs a Were-Hair Botique that tends to the underwater versions of werewolves. • '''''' (voiced by
Pat Morita) is an old karate master who appears in "
Karate Island." He is actually a scammer who wants people to invest in his condominium project, disguising it as the "King of Karate" crowning that he presents to SpongeBob. • '''''' (voiced by
Victoria Beckham) is King Neptune's wife and Triton's mother. She is worried by her son's attitude of not wanting to inherit the throne. • '''''' (voiced by
Sebastian Bach) is the teenage son of King Neptune who appears in "
The Clash of Triton". He initially wants to be a normal fish like everyone else, but his father convinces him otherwise. • '''''' (voiced by
Gilbert Gottfried) is the proprietor of the Slop Pail restaurant seen in "The Hankering". Mr. Krabs frequents the establishment until Sal decides to close it down permanently so he can pursue an acting career. • '''''' makes several appearances throughout the series, portrayed in live-action form by series writer Michael Patrick Bell in "
Christmas Who?", then in claymation by
John Goodman for "
It's a SpongeBob Christmas!".
Lewis Black took over the role for later seasons, with Santa appearing traditionally animated and for a
Kamp Koral episode in CGI. The Lewis Black version is generally annoyed by SpongeBob's antics, referring to him as "a menace" in a non-spiteful kind of way. • '''''' (voiced by
Gene Simmons) is a lizard-like sea monster who appears in "20,000 Patties Under the Sea". After having slept for 79 years, he demands for SpongeBob and Patrick to sell him food in exchange for giant dollar bills. • '
(voiced by Henry Winkler), (voiced by Michael McKean), (voiced by Clancy Brown) and ' (voiced by
David Lander) are a street gang of sharks who appear in the episode "Sharks vs. Pods", in which SpongeBob joins them. They are actually dancers rather than fighters and are rivals to Squidward's gang, a group of octopuses called the Pods. • '''''' is Plankton's pet
amoeba, who lives in the Chum Bucket with him and Karen. Spot behaves similarly to a puppy, is a good retriever, and can grow very large when he needs to protect his owner. He first appears in the season 9 episode "Plankton's Pet," and reappears in several episodes from season 11 onward. • '''''' (voiced by
Dee Bradley Baker) is an octopus and Squidward Tentacles' arrogant, wealthy arch-rival, who has succeeded in everything Squidward had aspired to. He owns a four-story mansion with an expansive garden on the rooftop. He appears in six episodes throughout the first seven seasons, most notably in "
Band Geeks" where Squidward finally emerges victorious against him by leading an unexpectedly successful band performance. Alternate versions of him appear in "Back to the Past" and "Code Yellow", but he has not made a physical appearance since "Keep Bikini Bottom Beautiful". • ''''
(voiced by Joe Pantoliano in "The Getaway" and "End of Summer Daze", Tom Kenny in "Captain Pipsqueak") is a prisoner who escapes from Bikini Bottom Prison in "The Getaway" and mistakes SpongeBob as his getaway driver which makes things worse for him. In "Captain Pipsqueak", Sticky Fins Whiting is among the villains auditioning to join E.V.I.L. In the Kamp Koral: SpongeBob's Under Years'' episode "End of Summer Daze", Whiting and Dorsal Dan show up at Kamp Koral where they end up hiding the loot they've stole in the pies that were made. Both of them were chased away by the jellyfish. • '''''' (voiced by
Steve Buscemi in "The Getaway", "Ain't That the Tooth", and "End of Summer Daze",
Clancy Brown in "The Krusty Slammer",
Rodger Bumpass in "Captain Pipsqueak") is a fish who was supposed to be Sticky Fins Whiting's getaway driver only for a mix-up involving SpongeBob to occur. In "Captain Pipsqueak", Dorsal Dan is among the villains auditioning to join E.V.I.L. In the ''Kamp Koral: SpongeBob's Under Years'' episode "End of Summer Daze", Dorsal Dan and Sticky Fins Whiting sho up at Kamp Koral where they end up hiding the loot they stole in the pies that were made. Both of them were chased away by the jellyfish. • The '''''' (voiced by
Thomas F. Wilson) is a criminal fish who appears in "SpongeBob Meets the Strangler". He is detained for repeatedly strangling someone and promises to strangle SpongeBob when the latter has him arrested. He escapes from jail and pretends to be a bodyguard to get close to SpongeBob, but SpongeBob's behavior annoys him to the point where he would rather be back in prison. In "Captain Pipsqueak", the Tattletale Strangler" made a cameo among the villains auditioning to join E.V.I.L. When he objects to not going first, the Tattletale Strangler is zapped by Man Ray.
Mermaid Man and Barnacle Boy enemies In Mermaid Man and Barnacle Boy's show within a show and real-life, Mermaid Man and Barnacle Boy have fought an assortment of villains where some of them have encountered SpongeBob SquarePants and Patrick Star before. Some of them are shown to be members of the B.G.A.T.F.B.C. (short for Bad Guys All Together for Book Club) in "The Bad Guy Club for Villains". On occasion, some of Mermaid Man and Barnacle Boy's enemies come together as E.V.I.L. (short for Every Villain is Lemons). Mermaid Man and Barnacle Boy's rogues gallery consists of: • '''''' (voiced by
Carlos Alazraqui in "Mermaid Man and Barnacle Boy II",
Dee Bradley Baker in "The Bad Guy Club for Villains" is an irradiated flounder and one of the enemies of Mermaid Man and Barnacle Boy. In his youth, Atomic Flounder wore a hazmat suit. He was shown to have retired from crime. In "The Bad Guy Club for Villains", Atomic Flounder was redesigned where he now resembles a humanoid mutant flounder with an arm growing from his left arm and an eye growing from the right side of his eye. He was shown to be associated with the B.G.A.T.F.B.C. • '''''' (voiced by
Charles Nelson Reilly in his first appearance,
Tom Kenny in later appearances) is a villain against Mermaid Man and Barnacle Boy. He is a giant brown bubble with a face that is vulnerable to pointy items. The Dirty Bubble was one of the founders of the evil organization E.V.I.L. in "Mermaid Man and Barnacle Boy V" and was part of the group again in "Captain Pipsqueak" and "Delivery of Doom". He is also shown to be a member of the B.G.A.T.F.B.C. • '''''' (voiced by
Tom Kenny) is a kelp-themed supervillain who is an enemy of Mermaid Man and Barnacle Boy. • '''''' (voiced by
John Rhys-Davies in the first appearance,
Bob Joles in later appearances) is a villain against Mermaid Man and Barnacle Boy. Man Ray has a man's body and a helmet shaped to look like a
manta ray's head, which hides the fact that he does not have a head. He is a spoof of
Aquaman's arch enemy,
Black Manta. Though Man Ray retires as a supervillain in his first appearance, he later goes back to being a villain where he even became a founder of E.V.I.L. (short for Every Villain is Lemons) in "Mermaid Man and Barnacle Boy V" and was part of the group again in "Captain Pipsqueak" and "Delivery of Doom". • '''''' (voiced by
Mark Hamill) is a supervillain moth and an enemy of Mermaid Man and Barnacle Boy who appears in "Night Light". Even though he is minuscule, he has the strength to carry both SpongeBob's house and a lighthouse. • '''''' (vocal effects provided by
Tom Kenny) is a robotic
mantis that Mermaid Man and Barnacle Boy fought in the theme song seen in "The Bad Guy Club for Villains". In "Captain Pipsqueak", the Robot Mantis is among those that auditioned to join E.V.I.L. only to be destroyed by Man Ray because the piano belonging to Gramma that he turned into different instruments was just tuned. • '''''' (voiced by
Mr. Lawrence) is a gray sea slug and an enemy of Mermaid Man and Barnacle Boy who can climb walls and shoot slime. He was shown to resemble a green sea slug in a green mask and outfit in "Mermaid Man and Barnacle Boy II". In "The Bad Guy Club for Villains", Sinister Slug was redesigned with a more realistic beige body, sharp teeth, and red eyes where he was shown to be a member of B.G.A.T.F.B.C. • '''''' (voiced by
Dee Bradley Baker) is a large muscular shrimp with super-strength who is an enemy of Mermaid Man and Barnacle Boy. He resembles a muscular pink shrimp in "Mermaid Man and Barnacle Boy II". In "The Bad Guy Club for Villains", Jumbo Shrimp was redesigned where he resembles a real shrimp with spiky antennae, muscular arms, four legs, and a long tail. He was also shown to be a member of B.G.A.T.F.B.C. In "Captain Pipsqueak" and "Delivery of Doom", Jumbo Shrimp is shown to be a member of E.V.I.L. Though the latter has him redesigned similar to his earlier appearances, but smaller and having four arms. • ''''
(voiced by Jill Talley) is a notodoris minor who appeared in "Captain Pipsqueak" as a member of E.V.I.L. She appears to have fought Mermaid Man and Barnacle Boy before as she was seen with E.V.I.L. in an episode of The New Adventures of Mermaid Man and Barnacle Boy'' lowering them into a vat of molten lava. • '''''' (vocal effects provided by Danny Giovannini) is a
little person in a full diving suit who operates a
submarine/
meatball submarine sandwich with legs. He appears in "Delivery of Doom" as a member of E.V.I.L. where the narrator had to remind SpongeBob SquarePants who he was.
International Justice League of Super Acquaintances The
International Justice League of Super Acquaintances (or IJLSA for short) are a group of the ocean's greatest superheroes that Mermaid Man and Barnacle Boy are associated with. An earlier version of the group was called the
International Justice Lodge of Super Acquaintances as seen in "The Bad Guy Club for Villains". In "Mermaid Man and Barnacle Boy V", SpongeBob and his friends had to pose as some of its members to help Mermaid Man fight E.V.I.L. In "The Bad Guy Club for Villains", it was shown that Mermaid Man and Barnacle Boy's enemies were not familiar with them at first. •
Quickster - A superhero and member of the IJLSA with super-speed. SpongeBob SquarePants once operated as him. •
Captain Magma - A superhero with a volcano on his head and member of the IJLSA that can shoot lava when "Krakatoa" is shouted. Squidward Tentacles once operated as him. •
Professor Magma (vocal effects provided by
Tom Kenny) - A magma-themed superhero and member of the IJLSA that was seen in "The Bad Guy Club for Villains". •
Elastic Waistband (voiced by
Dee Bradley Baker) - An elastic superhero and member of the IJLSA. In "Mermaid Man and Barnacle Boy V", Elastic Waistband is shown to have elasticity where Patrick Star once operated as him. In "The Bad Guy Club for Villains", Elastic Waistband was redesigned where his torso can inflate to ball shape when he unbuckles his waistband. •
Miss Appear (voiced by
Sirena Irwin) is a superhero with invisibility and member of the IJLSA. In "The Bad Guy Club for Villains", Miss Appear was redesigned to resemble a parody of
Wonder Woman. •
Pyrite Ponderer (voiced by
Tom Kenny) is a pyrite-themed superhero and member of the IJLSA who wields the Hairnet of Knowledge that can do other things. He is known for giving advice and making comments like "Do we really exist" and "violence resolves nothing".
Film characters • '''''' (voiced by
Scarlett Johansson) is King Neptune's daughter. She is Patrick's love interest. She is a motherly and friendly person and a very good friend of SpongeBob and Patrick. She appears in
The SpongeBob SquarePants Movie. She isn't mentioned in the TV series, but does appear in the special "SpongeBob's Big Birthday Blowout". • '''''' (voiced by
Alec Baldwin in the film,
Clancy Brown in the TV series) is a hitman hired by Plankton to assassinate SpongeBob and Patrick before they are able to retrieve King Neptune's crown from Shell City. Before he manages to do that however he is first stomped by the Cyclops and then hit by a pier. He only appeared in
The SpongeBob SquarePants Movie and made a speaking cameo in "Captain Pipsqueak" where he was the receptionist for E.V.I.L. • ''''
(performed by Aaron Hendry, vocal effects provided by Neil Ross) is a marine diver who is always seen wearing an atmospheric diving suit and helmet, even when not underwater, and never talks but only grunts appearing only in The SpongeBob SquarePants Movie''. He is actually a normal adult man; however, because humans tower virtually all sea life, Mindy describes him as "the worst of all hazards". He is the owner of "Shell City", which is really the name of a seaside gift and souvenir shop. • ''''
(portrayed by Antonio Banderas) is a pirate who, upon discovering a book capable of rewriting reality, steals the Krabby Patty formula to open up a fast food drive-in while also changing Bikini Bottom into a wasteland. He appears in The SpongeBob Movie: Sponge Out of Water''. • ''''
(voiced by Paul Tibbitt (US)/Joe Sugg (UK)/Robert Irwin (Australia)) is an innocent seagull that listens to the stories of Burger-Beard. He appears in The SpongeBob Movie: Sponge Out of Water''. • '''''' (voiced by
Matt Berry in the film,
Jeff Bennett in the video game) is a god-like
bottlenose dolphin who is the overseer of the universe, watching them from a triangular building in outer space. SpongeBob and Plankton accidentally end up in his audience while using Karen's time machine in
The SpongeBob Movie: Sponge Out of Water. • '''''' (voiced by Matt Berry) is the ruler of the seven seas who resides in Atlantic City and is much different from King Neptune. He uses snails' slime as face cream to look younger, which is the reason he kidnapped SpongeBob's pet snail Gary once he was all out of snails. He only appeared in
The SpongeBob Movie: Sponge on the Run. • '''''' (voiced by
Reggie Watts) is King Poseidon's assistant. He appears in
The SpongeBob Movie: Sponge on the Run. • ''''
(portrayed by Keanu Reeves) is a tumbleweed with a human face who helps SpongeBob on his quest to save Gary. He appears in The SpongeBob Movie: Sponge on the Run''. • ''''
(portrayed by Danny Trejo) is the leader of vampire cowboy zombies whom SpongeBob and Patrick encountered in their dream. He appears in The SpongeBob Movie: Sponge on the Run''.
Spin-off characters • '
and ' (voiced by
Carlos Alazraqui and
Kate Higgins) are characters in the spin-off series ''
Kamp Koral: SpongeBob's Under Years''. They are a pair of
hillbilly narwhals who live in the Kelp Forest. The narwhal siblings have crossed over into the main series on different occasions: the episodes "Something Narwhal This Way Comes", "Upturn Girls", "Sandy, Help Us!" and "In the Mood to Feud". In the main series, Nobby is shown to be larger and muscular while Narlene was just taller. • ''''
(voiced by Carlos Alazraqui) is a nerd in Kamp Koral: SpongeBob's Under Years'' who resides in Pontoon Cabin with Bubble Bass and Kevin C. Cucumber. He later crossed over into the main series where the threesome made up a Captain Quasar fan club in "Captain Quasar: The Next Iteration" which SpongeBob, Patrick, and Squidina tried to get into. • The '''''' (voiced by
Brad Garrett impersonating
Rodney Dangerfield,
Jess Harnell also impersonating Dangerfield in "Kreepaway Kamp", "Rube Tube", and "SpongeBob and Patrick's Time Twist-Up") is a sea monster in ''Kamp Koral: SpongeBob's Under Years'' that was seen living in the lake at Kamp Koral where he is shown to have a comedic side. He later crossed over into the main series where he appeared at the end of "Abandon Twits". • ''''
(voiced by John Gegenhuber) is a blobfish in Kamp Koral: SpongeBob's Under Years'' who resides in Trawler Cabin with "Kidferatu". In "Kreepaway Kamp", Jimmy Blobfish appeared taller and thinner when he reunites with his cabin mates. He admits that he missed how he looked when he was young. • ''''
(voiced by Grey DeLisle) is a sea spider in Kamp Koral: SpongeBob's Under Years'' who resides in Trawler Cabin with "Kidferatu". • '
is a duo consisting of the anglerfish (voiced by Grey DeLisle) and the anglerfish lure ' (voiced by
Kate Higgins) that appear in ''Kamp Koral: SpongeBob's Under Years''. They reside in Trawler Cabin with "Kidferatu". In "Kreepaway Kamp", their positions have switched where Big Roxy is now elderly and small is now taller and no longer glowing at the time when they reunited with their cabin mates. • '
(voiced by Thomas F. Wilson) and ' (voiced by
Cree Summer) are Patrick's parents in the spin-off series
The Patrick Star Show. Cecil works at the Undersea Space Center while Bunny works from home. Cecil later appeared in the ''Kamp Koral: SpongeBob's Under Years'' episode "Help Not Wanted" where he visits his son and was revealed to have been a former camper at Kamp Koral as well as made cameos in the main series. • ''''
(voiced by Jill Talley) is a purple squid. She was first introduced in "Goons on the Moon" as a teenage friend of Pearl. In the spin-off The Patrick Star Show'', Squidina is Patrick's adopted sister and the director and producer of Patrick's imaginary talk show. She later crossed over into the main series where she sported a tuft of hair on her head and was first seen in "Captain Quasar: The Next Iteration". • '''''' (voiced by
Dana Snyder) is Patrick's grandfather and Cecil's father in
The Patrick Star Show. He is the smartest member of the Star family. • '''''' (vocal effects provided by
Tom Kenny) is a sea urchin who is the Star family's pet in
The Patrick Star Show. • ''''
(vocal effects provided by Dee Bradley Baker) is a sentient toilet in The Patrick Star Show''. • ''''
(vocal effects provided by Jill Talley) is a sea bunny in The Patrick Star Show''. While often shown to be feuding with Ouchie, they get along well when they are with Tinkle. • '''''' (voiced by
Mr. Lawrence) is a
mad scientist counterpart of Sheldon Plankton who lives in a black and white gothic castle. He is shown to dislike "The Patrick Show" and is shown to use his experiments and inventions for evil. Dr. Plankenstein is a parody of
Victor Frankenstein. • '''''' (voiced by
Bill Fagerbakke) is the assistant of Dr. Plankenstein and a hunchbacked counterpart of Patrick Star. He is shown to be a fan of "The Patrick Show" much to the dismay of Dr. Plankenstein. Pat-gor is a parody of
Igor. • '''''' (voiced by
Tom Kenny) is the monstrous creation of Dr. Plankenstein who is on good terms with Pat-gor and a counterpart of SpongeBob SquarePants. He is a parody of
Frankenstein's monster. • '''''' (voiced by
Rodger Bumpass) is a shark space captain who is the star of his own TV show. He later crossed over into the main series where he appeared in "Captain Quasar: The Next Iteration" where he has become old, yet manages to best his reboot counterpart. • '''''' (voiced by
Bill Fagerbakke) is a starfish robot counterpart of Patrick Star and sidekick of Captain Doug Quasar whose incompetent actions causes trouble for Quasar. He later crossed over into the main series where he appeared in "Captain Quasar: The Next Iteration" where he has become old, yet manages to best his reboot counterpart. • '''''' (voiced by Gracen Newton) is a red crab kid who was originally the intern for Squidina in "Squidina's Little Helper" before stealing from the Star family to start
The Crabina Show that her older sister Crabina starred in. In "Best Served Cold", Fentin is jealous with Squidina's success and joins with the other characters who had grievences with the Star Family in a revenge plot.
Families SquarePants • '''''' (voiced by
John DiMaggio) is SpongeBob's cousin who bullied him during their childhoods. In his lone appearance, BlackJack was imprisoned for littering but has since been released. While he appeared large in flashbacks, BlackJack somehow shrunk by the present day. • '''''' (voiced by
Christopher Guest) is SpongeBob's cousin who appears solely in the episode "Stanley S. SquarePants". SpongeBob receives Stanley in a package sent by his Uncle Clem, who is relieved to have sent Stanley, since he would destroy anything he touches. True to this, despite SpongeBob trying to teach him, Stanley constantly destroys everything and almost makes SpongeBob lose his job until SpongeBob told the truth to Mr. Krabs. This leads to Mr. Krabs hooking Stanley up with Plankton where he accidentally wrecks The Chum Bucket. • '''''' (voiced by Garnett Sailor) is SpongeBob's uncle who only appears in the episode "BlackJack". He is a retired
police captain and lives right next to SpongeBob's cousin BlackJack. In the episode, SpongeBob goes to his house to help him stop BlackJack from torturing SpongeBob's parents. However, he can't hear over the lawnmower and thinks SpongeBob wants to help him mow the lawn. It goes on like this for other noisy objects such as a
blender, a radio with static, and a
phonograph. When he finally hears the news, he drives SpongeBob over to BlackJack's house, but he warns SpongeBob to be careful. • '''''' (voiced by
Marion Ross) is SpongeBob's paternal grandmother. She spoils SpongeBob whenever he visits her house with cookies, milk, sweaters, and bedtime stories, even though it can embarrass SpongeBob.
Star • '
and Margie Star' are Patrick's parents in the original series. Their identities are temporarily taken by another starfish couple named Marty and Janet in "I'm with Stupid". In "Rule of Dumb", it is revealed that Herb is a brother of Gary's father, Sluggo, making Patrick and Gary first cousins. The characters were later dropped when Cecil Star and Bunny Star were created.
Tentacles • '''''' (voiced by
Rodger Bumpass in most appearances,
Dee Bradley Baker in "Fools in April") is Squidward's elderly mother. In earlier episodes, she only appears as hallucinations tormenting Squidward, but later appears in person in "Krusty Towers". She lives in a moai like Squidward, but with a curly hair-like structure on its roof and earring-like balls hanging from the sides. In "Momageddon", Mrs. Tentacles underwent a redesign that left her less wrinkly. • '''''' (voiced by
Tom Kenny in "Kamp Kow" and "Momageddon",
Henry Winkler in "Jeffy T's Prank Emporium") is Squidward's father who was mentioned before appearing in "Kamp Kow". He showed up in person in "Momageddon" where he had a brown moustache. In "Jeffy T.'s Prankwell Emporium", Jeff is the proprietor of "Jeffy T's Prankwell Emporium" and was redesigned with a white moustache, balding gray hair, and pale yellow skin. • ''''
(voiced by Mary Jo Catlett in "Chum Fricasse", Cree Summer in The Patrick Star Show'') is Squidward's paternal grandmother. She was originally mentioned in "Sandy's Rocket" before appearing in person in "Chum Fricasse" where Mr. Krabs tipped her off about Squidward and Plankton misusing her famous chum fricasse recipe by not letting it cook for 24 hours and had the customers wreck the Chum Bucket in retaliation. Then she dragged Squidward away to deal with him. In
The Patrick Star Show, Grandma Tentacles is shown to be the Star family's neighbor where she would be annoyed with their shenanigans. She is also shown to have an on-again off-again dating relationship with GrandPat Star in some episodes.
Krabs • '''''' (voiced by
Paul Tibbitt in season 2–3,
Sirena Irwin in season 4–6) is Mr. Krabs' overbearing mother who still treats him slightly like a child. She is a friend of Old Man Jenkins. She first appears in "
Sailor Mouth" and has been mostly retired from the show, aside from appearances in "Lame and Fortune" and later "Momageddon". Although her name is not officially mentioned in the series, she is referred to as "Betsy" in some merchandising. • '''''' (voiced by
Dennis Quaid) is Mr. Krabs' paternal grandfather who is a pirate. In "Grandpappy the Pirate", he visits his grandson, thinking that the latter is also a pirate instead of the owner of a restaurant. Mr. Krabs tries not to disappoint Redbeard by disguising the Krusty Krab as a pirate ship, pretending Pearl is a sea monster, and dressing his employees as sailors.
Plankton • '''''' (voiced by
Clancy Brown) is Plankton's hillbilly father. In "Blood is Thicker than Grease and Oil", Gordon leads his family in opening a potato restaurant next to Plankton after winning the lottery. It doesn't last long when Plankton joined the business after failing to ruin it and placing chum in the potatoes. In "In the Mood to Feud", it is revealed that Gordon's hillbilly family has feuded with Nobby and Narlene's family over the field of bumble jellies (a bumblebee version of jellyfish) in between their properties in Bikini Holler. • '''''' (voiced by
Kate Higgins) is Plankton's hillbilly mother. • '''''' (voiced by
Paul Tibbitt) is the father of Gordon Plankton and the grandfather of Plankton. • '''''' (voiced by
Laraine Newman) is Plankton's grandmother. • '''''' (voiced by
Dee Bradley Baker in "Plankton's Army",
Bill Fagerbakke in "Plankton's Robotic Revenge",
Carlos Alazraqui in "Something Narwhal This Way Comes",
Tom Kenny in "In the Mood to Feud") is Plankton's cousin and the leader of the rest of Plankton's cousins. • '''''' (variously voiced by
Carlos Alazraqui,
Dee Bradley Baker,
Clancy Brown,
Rodger Bumpass,
Bill Fagerbakke,
Tom Kenny,
Carolyn Lawrence, and
Jill Talley) are the rest of Plankton's hillbilly cousins where most of them aren't named.
Narwhal • '''''' (voiced by
Tom Kenny) is the father of Nobby and Narlene and the patriarch of their hillbilly narwhal family. The episode "In the Mood to Feud" revealed that Pa Narwhal's family have been feuding with Plankton's family over the field of bumble jellies in between their properties in Bikini Holler. • '''''' (voiced by
Jill Talley) is the mother of Nobby and Narlene and the matriarch of their hillbilly narwhal family. • '''''' (voiced by
Tom Kenny) is the cousin of Nobby and Narlene who appears in the main series episode "Something Narwhal This Way Comes". • '''''' (voiced by
Jack McBrayer) is the cousin of Nobby and Narlene who appears in two episodes of "Kamp Koral: SpongeBob's Under Years".
Ancestors • '
and Primitive Star' (voiced by
Tom Kenny and
Bill Fagerbakke) are the earliest known ancestors of SpongeBob and Patrick, who appear in the episode "SB-129" when Squidward time-travels to the past. Upon seeing the two of them electrocuting themselves with a jellyfish, Squidward inadvertently teaches them the sport of Jellyfishing, which results in Squidward being documented as the inventor of Jellyfishing when he returns to the present. They also seem to strongly dislike Squidward's clarinet music, as they ruthlessly chase down Squidward upon hearing it. The scene where Primitive Sponge and Primitive Star are confronted by Squidward upon noticing them torturing themselves with the jellyfish, particularly, the pose struck by Primitive Sponge, has become an
internet meme, referred to as "SpongeGar" (which was actually the name given to another of SpongeBob's primitive ancestors in the episode "Ugh"). • '
, Patar, and Squog' (voiced by
Tom Kenny,
Bill Fagerbakke, and
Rodger Bumpass) are SpongeBob, Patrick, and Squidward's neolithic ancestors who appear in "Ugh." While still not being able to speak intelligibly, they are more advanced than the primitive ancestors in "SB-129" as they are shown to use stone tools and fire. Also appearing in the episode are
Primitive Gary (voiced by Tom Kenny), Gary's gigantic ancestor and SpongeGar's pet, and
Primitive Krabs (voiced by
Clancy Brown), Mr. Krabs' tiny ancestor who repeatedly chants "money." • '
and Patron' (voiced by
Tom Kenny and
Bill Fagerbakke) are SpongeBob and Patrick's robotic descendants who appear in "SB-129". SpongeTron has 486 clones, each one named after a letter of the English alphabet from 2,000 years in the future, while Patron has two heads. • '
, Pecos Patrick, Hopalong Tentacles, William Krabs, Polene Puff, and Dead Eye Plankton' (voiced by
Tom Kenny,
Bill Fagerbakke,
Rodger Bumpass,
Clancy Brown,
Mary Jo Catlett, and
Mr. Lawrence) are the main characters' wild west ancestors who appear in "
Pest of the West". They lived in the town of Bikini Gulch and frequented an old-fashioned bar version of the Krusty Krab called the Krusty Kantina. • '
, King Krabs, Princess Pearl, Dark Knight, Planktonamor, and Karen the Crystal Ball (voiced by Rodger Bumpass, Clancy Brown, Lori Alan, Carolyn Lawrence, Mr. Lawrence, and Jill Talley) are the medieval counterparts of the main characters who appear in "Dunces and Dragons". The present-day SpongeBob and Patrick are magically transported to their times and help save Princess Pearl from Planktonamor. Planktonamor additionally keeps a pet, the Dragon Jellyfish', who is a giant jellyfish with a mane and a tail. ==Reception==