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One-Time Characters

    Flats 

Flats the Flounder

https://static.tvtropes.org/pmwiki/pub/images/flats_the_flounder_6.png
Hi, Spongebob. I'm gunna kick your butt.
Voiced by: Thomas F. Wilson
Debut: "Sandy's Rocket"

A bully at Mrs. Puff's Boating School who wants to kick SpongeBob's butt.


  • Abusive Offspring: At one point Spongebob tries to appeal to Flats father for help, only for it to turn out he's also terrified of Flats as he's apparently kicked his butt in the past.
  • Actor Allusion: He's the primary antagonist of the episode who's the threatening central bully to SpongeBob. He was also voiced by Thomas F. Wilson, as he portrays a bullying character in the Back to the Future movies known as Biff Tannen, who's essentially an Arch-Enemy bully to Marty McFly.
  • Ascended Extra: He was a background character for a few early episodes before coming into the spotlight as the infamous bully he's known as now.
  • Big Bad: He's the main villain in "The Bully."
  • Blatant Lies: He employs obvious lies very often, especially when covering his own ass. The most notable one is when he convinces Mrs. Puff that where he's from, saying that you want to kick someone's butt means you want to befriend them.
  • The Bully: He threatens to kick SpongeBob's butt the minute he lays eyes on him.
  • Character Catchphrase: "I'm gonna kick your butt."
  • Demoted to Extra: After his A Day in the Limelight episode, he returns to being a background character. Like fellow bully Bubble Bass, he was absent for several years before returning. Unlike Bubble Bass, however, he has yet to have a speaking role in the later seasons.
  • The Determinator: Much like John Ryder it's impossible for SpongeBob to avoid him for long.
  • Early-Bird Cameo: He appeared in "Sandy's Rocket" as one of the people that SpongeBob and Patrick kidnap.
  • Even Evil Can Be Loved: Love is probably pushing it, but Patrick and him seem to get along swimmingly.
  • Flat Character: And not just because he's a flounder. His only character trait is wanting to kick butts.
  • For the Evulz: The episode doesn't give him a reason to want to kick SpongeBob's butt beyond just because.
  • Hoist by His Own Petard: His excessive brute force being used on SpongeBob (who can't even feel a thing) and constant assault is what tires him out where he's punched him so many times, he can barely even attack him from a standing position along with his poorly made swings, and passes out.
  • Jerkass: He has absolutely no reason to antagonize SpongeBob, but does so anyway.
  • Karma Houdini: For someone who had nothing better to do than to perform antagonistic things he attempted towards SpongeBob other than wanting to beat the daylights out of him such as trying to run him over with a garbage truck of all things, somehow he doesn't even receive any form of punishment for his pointlessly violent intentions. Subverted where after he failed to even physically hurt SpongeBob at all, no matter how many times he's punched him for days on end, he finally collapses from utter exhaustion. This gets seemingly double subverted where after Mrs. Puff arrives at the worst time to see Flats lying unconscious as SpongeBob was holding his fist up in the air, making her come to the conclusion that SpongeBob himself is the aggressor, even though he's literally done nothing wrong.
  • Pet the Dog: An oddball example. While still willing to beat up SpongeBob, in spite of the former saving his life, Flats is nonetheless touched by it and is estatic SpongeBob brought him flowers.
  • Punch-Clock Villain: Apparently when he's not trying to kick someone's butt, he can be a chill guy. He remains friends with Patrick some several years after they attended community college together.
  • Pushover Parents: His father is terrified of him.
  • Ungrateful Bastard: He still wants to beat SpongeBob up even after the latter performs CPR on him.

    Wormy 

Wormy

https://static.tvtropes.org/pmwiki/pub/images/wormy.jpg
Click here to see his current form
Voiced by: N/A
Debut: "Wormy"

Sandy's pet caterpillar, who turned into a butterfly.


  • Artifact Name: Despite being a caterpillar, he's still called "Wormy". After he metamorphosized into a butterfly, that only made him less like a worm than before.
  • The Dreaded: Inadvertently becomes this to SpongeBob, Patrick and the rest of Bikini Bottom when he transforms into a butterfly overnight, causing mass hysteria even though he's harmless.
  • Jump Scare: Whenever someone stares at Wormy, it's usually accompnaied by a sudden closeup of a buzzing horsefly following by anyone who saw Wormy screaming and running away.
  • Non-Indicative Name: He's named "Wormy" even though he's actually a caterpillar who later becomes a butterfly.

    Kevin C. Cucumber 

Kevin C. Cucumber

https://static.tvtropes.org/pmwiki/pub/images/kevin_c_cucumber.jpg
Voiced by: Dee Bradley Baker
Debut: "I'm Your Biggest Fanatic"

An obnoxious sea cucumber, who SpongeBob and Patrick formerly admire and idolize.


  • Asshole Victim: He constantly gets injured when he tries to get SpongeBob hurt. And he gets the fronds on his head torn off at the end of his episode. It should be Body Horror, but he deserved it for the massive jerk he was being.
  • Broken Pedestal: SpongeBob immeditely loses his admiration toward Kevin upon realizing how much of a jerk he truly is.
  • Crown-Shaped Head: Near the end of the episode, his "crown" is revealed to actually be part of his head.
  • For the Evulz: He picks on and belittles SpongeBob and then tries to drive him off a cliff for no apparent reason behind his own amusement. And later it's implied that he's done this to all of his "biggest fans".
  • Hate Sink: One of the biggest deliberately unlikable characters in the series along with Bubble Bass and Squilliam. Coincidentally, all three characters were voiced by Dee Bradley Baker.
  • I Want My Mommy!: Breaks down and cries for his mama after he and the other Jelly Spotters are trapped by the King Jellyfish.
    Help me, Mommy! Help me, Mommy! I want my blankie! I want my blankie!
  • Jerkass: He acts smug and antagonistic towards SpongeBob, and his tests are just hopes of SpongeBob getting seriously hurt.
  • Karmic Butt-Monkey: Kevin ends up getting injured a few times in this episode. Considering how much of a jerkass he is, his butt monkey status is well deserved.
  • Kick the Dog: The way he taunts SpongeBob after he realizes that the Queen Jellyfish was fake was definitely the cruelest thing he did to him in the episode.
  • Know-Nothing Know-It-All: The end of his first appearance reveals that he actually knows nothing about jellyfish, and the only reason he got into jellyfishing in the first place was because of the merchandise.
  • Laser-Guided Karma: After everything Kevin did toward SpongeBob throughout the episode, the other Jellyspotters rightfully punish him by ripping off his Crown-Shaped Head and exiling him. SpongeBob also rightfully turns down the offer to join, having realized it's not about Kevin, but the jellyfish themselves.
  • Miles Gloriosus: An apparent expert at jellyfish hunting, if not the king of the activity. When King Jellyfish arrives on the scene, he becomes a snivelling coward who leaves it up to SpongeBob to deal with.
  • Nerdy Bully: While Kevin has all the outward trappings of a nerd (nasal voice, niche interests, and even a pocket protector), he behaves more like a mean-spirited fratboy; he leads an exclusive clique, decides what's fashionable and what isn't, and enjoys hazing "losers" like SpongeBob after baiting them with the promise of getting into the club.
  • Noodle Incident: The King Jellyfish gets really angry when it sees him, implying that the two have some sort of history. It even bellows his name the minute it notices him.
    King Jellyfish: KEEEEEEVIINNNNN!!!
  • Punny Name: His initial is C and his last name is Cucumber. He's a sea cucumber.
  • The Reveal:
    • He actually doesn't know anything about Jellyfishing, and just got in Jellyfishing for the fashionable merchandise.
    • It's also Played for Black Comedy. His "crown" is actually part of his head, and the other Jellyspotters basically ripped off the top of his head and gave it to SpongeBob.
  • Smug Snake: Constantly attempts to sabotage SpongeBob's attempts to get into the Jelly Spotters and is always convinced that his plans won't fail. Except they do fail. Constantly. And hilariously.
  • Species Surname: He's a sea cucumber, and Cucumber happens to be his last name.
  • Stealth Insult: The crown is the butt of the sea cucumber. Kevin literally has an asshat (or a butthead).
  • Ungrateful Bastard: Even after SpongeBob saves his life, he's still a massive jerk to him! This prompts the Jellyspotters to turn on him and evict him from the club.
  • Visual Pun: A sea cucumber who looks like an actual cucumber.

    Clamu 

Clamu

https://static.tvtropes.org/pmwiki/pub/images/clamu.png
Voiced by: Frank Welker
Debut: "The Smoking Peanut"

A non-anthropomorphic giant oyster at the Bikini Bottom Zoo, trained to perform tricks.


    DoodleBob 

DoodleBob

https://static.tvtropes.org/pmwiki/pub/images/doodlebob_tvtropes.png
Me Hoy Minoy!
Voiced by: Paul Tibbitt
Debut: "Frankendoodle"

SpongeBob and Patrick's creation, a crude doodle of SpongeBob come to life, and on an Unstoppable Rage.


  • Abusive Offspring: He's both SpongeBob and Patrick's creation. Unfortunately, he holds no love for his creators and won't hesitate to erase them too.
  • And I Must Scream: Inverted when SpongeBob trapped him in paper, making him Go Out with a Smile. However, this was how SpongeBob justified DoodleBob's Unstoppable Rage; He longed for a purpose.
  • Ax-Crazy: He seems to love inflicting pain on others.
  • Big Bad: He is the main villain in the SpongeBob edition of Drawn to Life.
  • The Bus Came Back: He returns in "Doodle Dimension" after Patrick accidentally redraws him Back from the Dead.
  • From a Single Cell: When SpongeBob destroys DoodleBob the first time, he forgets to erase Doodle's arm. Despite the rest of him being erased, the disembodied arm develops a mind of its own and re-draws DoodleBob exactly as he was before.
  • Go Out with a Smile: When SpongeBob traps him in a book (presumably killing him off), his face goes from angry and confused to a genuinely happy smile.
  • The Grotesque: Compared to SpongeBob, he's definitely uglier.
  • Kill and Replace: DoodleBob saying "You Doodle, me SpongeBob!" suggests his goal near the end of his debut episode is to erase SpongeBob and take his place.
  • Mad Eye: Due to SpongeBob’s poor drawing skills, one eye is a lot bigger than the other.
  • Nightmare Face: He isn't very pleasant to look at.
  • Super-Strength: He can easily smash through rocks and throw people.
  • Tragic Villain: How SpongeBob described him.
    Patrick: It's the evil doodle!
    SpongeBob: No, no, not evil. He was just a two dimensional creature, lost in our three dimensional aquatic world, longing for a purpose.
  • The Unintelligible: His speech is mostly random gibberish.
  • Vile Villain, Saccharine Show: Given that it's strongly implied he wanted to erase SpongeBob and take his place, he's definitely a rather dark villain for this kind of show, given that Plankton was a Harmless Villain and the Flying Dutchman wanted to be left alone.

    Hash Slinging Slasher 

Hash Slinging Slasher

https://static.tvtropes.org/pmwiki/pub/images/hash_7.png
Click here to see his actual face
Voiced by: Dee Bradley Baker
Debut: "Graveyard Shift"

Legend, or rather, Squidward, has it that a fry cook cut off his own hand with a spatula and was subsequently killed by a passing bus. Now his ghost haunts the Krusty Krab every Tuesday night with a vengeance.

Little does Squidward know that there is more to his ghost story than he realized... or less, rather.


  • Accidental Truth: Zig-zagged. Squidward told the made-up story of The Hash Slinging Slasher, only for all of these details of the story to start happening in real life, and then we're given one final rug pull, when "The Hash-Slinging Slasher" emerges from the shadows and we find out he's just a harmless nerdy dork named Richard.
  • Artificial Limbs: The Hash Slinging Slasher replaced his severed arm with a spatula.
  • Butt-Monkey: The Hash Slinging Slasher accidentally chopped his own limb off, got hit by a bus, and at his funeral, he was fired from his job.
  • Electromagnetic Ghosts: One of the signs of his arrival is that the lights will flicker on and off. Subverted; that was actually Nosferatu.
  • Recurring Extra: In the newest seasons, Richard has become a semi-recurring background character.
  • Red Eyes, Take Warning: His silhouette makes a pair of scowling, glowing red eyes the only part of him clearly visible. Subverted, as what appears to be the Hash Slinging Slasher's "eyes" are actually just Richard's nostrils.
  • Sudden Name Change: The credits for "Graveyard Shift" as well as DVD extras related to season 2 refer to him as Richard, while SpongeBob's Truth or Square calls him Hervy. Officially, he is known as "Incidental 189," suggesting he doesn't actually have a canon name.
  • The Unreveal: Turns out that the horrifying silhouette of the Hash Slinging Slasher was just a regular guy named "Richard" all along, just politely applying for a job.
  • Vile Villain, Saccharine Show: He's the main antagonist of one of the darkest episodes of the early seasons and his arrival is played almost completely seriously as Squidward realizes he told an Accidental Truth about him. Thankfully in his final scene, it turns out he's not a villain at all and is just some guy wanting a job application.

    Alaskan Bull Worm 

Alaskan Bull Worm

https://static.tvtropes.org/pmwiki/pub/images/alaskan_bull_worm_3.png
Voiced by: Rodger Bumpass
Debut: "Sandy, SpongeBob, and the Worm"
A colossal worm feared by the citizens of Bikini Bottom when it rampaged through it, eating anything in its path.
  • Ascended Extra: Has made a couple of cameos in other SpongeBob source material, its most prominent appearance being in SpongeBob SquarePants: Creature from the Krusty Krab as the game's resident Womb Level.
  • The Dreaded: One of the few legitimate examples in the series, being a monster worm capable of devouring anything.
  • Extreme Omnivore: The Alaskan Bull Worm has an appetite for just about anything it comes across. This is taken to its logical extreme in SpongeBob SquarePants: Creature from the Krusty Krab where its bowels are littered with inedible junk that can't be digested.
  • Red Herring: When Sandy encounters what she believes is the Worm inside a "cave", she manages to give it a beating and tie it up, only for SpongeBob to tell her that what she just defeated isn't the Worm itself, but its tongue.
  • Your Size May Vary: For most of the episode, while certainly very large, it could still conceivably move through Bikini Bottom's streets. But at the very end, it's large enough to crush the entire city beneath its bulk.

    Kenny the Cat 

Kenny the Cat

https://static.tvtropes.org/pmwiki/pub/images/kennythecat.png
"See, above water, I'm a nobody; just another annoying cat. But down here, I'm someone special. Someone who can make people happy."
English Voice: Biz Markie
Debut: "Kenny the Cat"

A cat who's famous in the underwater realm for being able to hold his breath for a very long time. Spongebob is a huge fan of him and is delighted when he comes to visit Bikini Bottom.


  • Broken Pedestal: SpongeBob discovers that Kenny secretly uses an oxygen tank hidden in his fur to regain his breath. Kenny manages to convince SpongeBob to keep it a secret, but his cover is blown after Sandy calls his bluff and pressures him to explain how he's managed to hold his breath for so long.
  • I Just Want to Be Special: Kenny wants to be famous underwater because on the surface, there's nothing remarkable about him. SpongeBob suggests he could be famous just for being a mammal that lives underwater, similar to Sandy, though she shuts it down by sending Kenny home right then and there.
  • Shout-Out: He looks similar to Tom from Tom and Jerry.
  • Tuckerization: He is presumably named after Tom Kenny, SpongeBob's voice actor.

    Mystery the Seahorse 

Mystery the Seahorse

https://static.tvtropes.org/pmwiki/pub/images/mystery_the_seahorse.png
Voiced by: Frank Welker
Debut: "My Pretty Seahorse"

A seahorse whom SpongeBob bonds with, and causes hysteria for his job.


    Plankton's cousins 

Plankton's cousins

https://static.tvtropes.org/pmwiki/pub/images/hqdefault_067.jpg
English Voice: Dee Bradley Baker, Jill Talley, Tom Kenny, Bill Fagerbakke, Carlos Alazraqui
Debut: "Plankton's Army"

Plankton's hillbilly cousins. He contacts them in an attempt to raise an army so he can get the secret formula to the Krabby Patty.


  • Comically Missing the Point: Despite the rest of the family panicking about Mr. Krabs' cookbook claiming Krabby Patties contain plankton as an ingredient, Clem doesn't react because he can't read the cookbook. Mr. Krabs tells him to buzz off and he does.
  • Country Cousin: All of Plankton's (known) cousins are hillbillies, in sharp contrast to the evil genius inventor that Plankton is.
    Plankton: I've been away from home longer than I thought...
  • Given Name Reveal: Clem calls Plankton "Sheldon" in front of Karen, who spends the next two minutes laughing non-stop about it.
  • Early-Bird Cameo: Plankton mentions a few episodes before "Plankton's Army" in "The Algae's Always Greener" that he's never reviewed anything besides an exercise video from one of his cousins.
  • Everybody Has Standards: The entire extended family is disgusted and frightened upon learning that the secret ingredient to the Krabby Patty is (supposedly) plankton, to the point that they run away because of it.
  • Feuding Families: Plankton's relatives, cousins included, are mortal enemies with Narlene and Nobby's family, as revealed in "Something Narwhal This Way Comes."
  • Never Learned to Read: Clem is illiterate, which results in him not reacting to the reveal that Krabby Patties supposedly contain plankton.
  • Nice Guy: The cousins are all decent if dumb-witted fellows.
  • Skewed Priorities: The cousins lack any interest in evil-doing, and most of them want comically small payments in exchange for helping Plankton to steal the formula, such as matching boots, new banjo strings, and more memory for a laptop. Plankton ultimately sways them to help him by offering them an unlimited supply of root beer.
  • Trademark Favorite Food: The family as a whole is highly enthusiastic about the prospect of having root beer, to the point where they agree to help Plankton in exchange for getting as much root beer as they want.

    Sea Bear 

Sea Bear

https://static.tvtropes.org/pmwiki/pub/images/web_capture_1_5_2023_11242_staticwikianocookienet.jpeg
English Voice: Dee Bradley Baker
Debut: "The Camping Episode"

A wild animal believed to be a hoax. Squidward accidentally summons one in an attempt to spite Spongebob and Patrick during their camping trip.


  • Berserk Button: A variety of seemingly-minor things can summon/aggravate a sea bear (and subsequently a sea rhino), which include: playing the clarinet badly, waving a flashlight's light back and forth really fast, stomping the ground (as they take it as a challenge), eat cubed cheese (sliced is fine), wearing a sombrero in a goofy fashion, wearing clown shoes or a hula skirt, and screeching like a chimpanzee. If you do end up facing off against a sea bear, attempting to escape will just prompt it to attack you more.
  • The Bus Came Back: A Sea Bear returns in "Out of the Picture".
  • Weaksauce Weakness: Sea bears can be repelled if you stand inside an anti-sea bear circle.

    Sea Rhinoceros 

Sea Rhinoceros

https://static.tvtropes.org/pmwiki/pub/images/web_capture_1_5_2023_11513_staticwikianocookienet.jpeg
English Voice: Dee Bradley Baker
Debut: "The Camping Episode"

A wild animal that can be attracted by the sound of a sea bear attack.


  • From Bad to Worse: Even if you get rid of the sea bear, now you have to deal with a sea rhino...
  • Weaksauce Weakness: Sea rhinos can be repelled if you wear anti-sea rhinoceros undergarments.

    Smitty WerbenJagerManJansen 

Smitty WerbenJagerManJansen

https://static.tvtropes.org/pmwiki/pub/images/dead_smitty.png
Voiced by: Dee Bradley Baker
Debut: "One Krabs Trash"

The skeleton of a dead fish, who was buried with a soda drinking hat.


  • The Ace: While it's never stated what exactly Smitty did when he was alive, it was enough to have his tombstone shaped like a giant "#1", and he's apparently popular enough to have a whole army of zombies who would fight to help him retrieve his stolen soda drinking hat.
  • Accidental Truth: Mr. Krabs makes up his name on the spot, when pressed about the original owner of the soda hat, but it turns out there really was a Smitty WerbenJagerManJansen who owned the hat, died, and had it stolen from him.
  • Decapitation Presentation: Inverted, when he carried his own dismembered head when rising from the grave.
  • Everyone Has Standards: Smitty becomes disgusted when Mr. Krabs mentions that his undead army will eat out his innards and leave his corpse for the buzzards. He just simply wants to take his hat back from him.
  • Hero Antagonist: He's the undead leader of a hoarde of Zombies, but his only goal is to get his property back from a guy who stole it. They're antagonists because Mr. Krabs is the lead character of that episode.
  • Mellow Fellow: He seems oddly calm for a zombie, and the only reason he has his army fight Mr. Krabs is to get his prized hat back from the man who stole it.
  • Overly Long Name: Smitty WerbenJagerManJansen. It's so long that his tombstone can't even fit the whole name on it, requiring two planks to be posted to it so they could fit in (and even then, they still couldn't fit the "Jager" part on.)
  • Posthumous Character: Long-dead by the time Mr. Krabs awakens him.
  • Resurrection Revenge: Smitty rises from the dead to summon an army of skeleton zombies on Mr. Krabs for robbing his grave and stealing his hat.
  • Rise from Your Grave: Smitty rises from his grave to get revenge on Mr. Krabs.
  • Signature Headgear: His #1 soda drinking hat.

    Sergeant Sam Roderick 
https://static.tvtropes.org/pmwiki/pub/images/sam_roderick.png
Voiced by: Robin Sachs
Mrs Puff's replacement in "Mrs Puff You're Fired".
  • Artistic License – Military: He's stated to be a Sergeant, yet his jacket only has the markings of a Corporal. Two chevrons instead of three.
  • All There in the Script: His name is not mentioned in-episode, only in the credits.
  • Crippling Overspecialization: With his methods, Sergeant Roderick teaches SpongeBob to become an excellent driver, something Mrs. Puff herself couldn't accomplish... except Spongebob can only drive exactly how he was taught, which was blindfolded. When Sarge informs SpongeBob it's illegal to drive with a blindfold in public and makes him remove it for the test, SpongeBob does disastrously, only managing to park the vehicle when he gets accidentally blinded.
  • Didn't Think This Through: He forces SpongeBob to learn how to drive while blindfolded. He actually succeeds, but fails to consider that SpongeBob wouldn't know how to drive without a blindfold.
  • Drill Sergeant Nasty: In that classic Large Ham fashion that Full Metal Jacket made famous. But it's mostly just Tough Love as he actually does care about Spongebob, in his own way. Just like the film, however, the flaws in this trope come in too. He drives away his entire class except SpongeBob, his harsh methods only manage to teach SpongeBob how to drive in a way that's useless, and just like Full Metal Jacket, his teaching methods may have gotten him killed.
  • Epic Fail:
    • Roderick teaching SpongeBob how to drive blindfolded, as it results in SpongeBob being unable to drive properly unless he wears one.
    • His attempt to stop the out-of-control boat just results in him being knocked away and presumably killed while the boat continues on regardless.
    • His introduction scares his entire class away except Spongebob, who is incompetent behind a boat.
  • Heroic Sacrifice: Sergeant Roderick tries to jump in front of the out-of-control boat, to no avail.
    "Come, get some!"
  • Jerkass: Comes with being a Drill Sergeant Nasty... despite only having the markings of a Corporal.
  • Killed Off for Real: Implied, since his last appearance has him being run over and he makes no further appearances in the series.
  • Large Ham:
    "NO EATING IN MY CLASSROOM!"
  • Stern Teacher: While he's very strict, he's also genuinely pleased when SpongeBob seems to be making progress.

    Kelpy G 

Kelpy G

https://static.tvtropes.org/pmwiki/pub/images/kelpy_g.jpg
Voiced by: Rodger Bumpass
Debut: "The Thing"

A famous octopus renowned for his soothing clarinet performances.


  • Ascended Extra: He was originally a mysterious man who was seen playing for the creatures that look suspiciously like Squidward's "Smelly" form at the end of "The Thing". He later became Squidward's main objective in "Smooth Jazz at Bikini Bottom", where he wants to listen to and meet him at one of his concerts.
  • Mellow Fellow: He's unlike most other cephalopods seen in the show in that he's a pretty chill guy who likes to play soothing clarinet pieces.
  • No Celebrities Were Harmed: He's a parody of saxophonist Kenny G.

    BlackJack SquarePants 

BlackJack SquarePants

https://static.tvtropes.org/pmwiki/pub/images/blackjack_0.png
Voiced by: John DiMaggio
Debut: "BlackJack"

SpongeBob's badass, sociopathic cousin who would very often challenge him to fights before being arrested.


  • Arson, Murder, and Jaywalking: As much as he tormented SpongeBob in their youth and is an all-around thug, he ultimately served ten years in jail after littering.
  • Big Brother Bully: Or rather "Big Cousin Bully". He very often psychologically and physically tormented SpongeBob in his childhood years by exploiting his cowardliness.
  • Disproportionate Retribution: He was sentenced to ten years in prison for...littering.
  • Jaywalking Will Ruin Your Life: He serves a 10-year sentence all because he littered, which is nothing compared to the real line he crossed.
  • Jerkass: He carelessly tormented SpongeBob in his childhood, and a decade after being paroled, he still hasn't learned his lesson. Fortunately, that doesn't mean he still poses a threat.
  • Obliviously Evil: It's likely he always interpreted his childhood fights with SpongeBob as harmless fun rather than bullying, whereas SpongeBob saw him as a psychopathic brute. In the present, he still likes to tussle, but since SpongeBob has gotten a lot bigger in the intervening years, he has no reason to be afraid of BlackJack anymore, so he laughs it off.
  • Reformed Bully: Well, maybe. According to SpongeBob's father, BlackJack decided to change his ways after getting out of jail for littering. He still likes to roughhouse with his cousin, but since he's far too small to do any harm, SpongeBob doesn't care.
  • Villain Decay: Despite him and SpongeBob now being in their adulthood, and acting as threatening as ever, he only grew up to be no bigger than SpongeBob's foot.
  • Would Hurt a Child: He willingly assaulted SpongeBob in his childhood years.

    Jim 

Jim

https://static.tvtropes.org/pmwiki/pub/images/download_476.jpg
Voiced by: Patton Oswalt
Debut: "The Original Fry Cook"

One of the previous fry cooks of the Krusty Krab, now retired and rich after cooking for upscale restaurants.


  • Actor Allusion: Possibly. Jim is an insanely good fry cook played by Patton Oswalt, much like Remy from Ratatouille, which came out around the same time as his debut episode.
  • Always Someone Better: His skills as a fry cook are even greater than Spongebob's, and he was considered the "Best Employee Ever" by Mr. Krabs.
  • The Dog Bites Back: He was mistreated and underpaid by Mr. Krabs, so he left and caused the Krusty Krab to fall into disrepair. It's unclear if he knew the Krabby Patty Secret Formula, but if he did, he effectively achieved what Plankton had been targeting for years.
  • Supreme Chef: Perhaps the greatest in the series.
  • You Are Better Than You Think You Are: He firmly believes that Spongebob could do so much better than he is right now as a fry cook, seeing his talents as wasted by Mr. Krabs, and that if he wanted to make it anywhere in life, Spongebob would be better off leaving the Krusty Krab forever like Jim did. It doesn't take with Spongebob.

    Puffy Fluffy 

Puffy Fluffy

https://static.tvtropes.org/pmwiki/pub/images/puffy_fluffy.jpg
Click here to see his true form

Debut: "A Pal for Gary"

A vicious fish whom SpongeBob bought for Gary so he could have a playmate to keep him company while his owner is at work, and SpongeBob thinks Gary is ignoring him whenever he attacks him when not present. In reality, despite his seemingly harmless appearance, he, along with other members of his species, is extremely dangerous and hostile toward other pets, especially snails.


  • Beneath the Mask: Don't trust his cute appearance one bit.
  • Berserk Button: Don't you ever put him in a house with another pet. SpongeBob should've learned this the hard way, but sadly suffers no punishment for his jerkish behavior toward Gary.
  • Bitch in Sheep's Clothing: At a first glance, he seems like an adorable, innocent little creature, but once exposed to another pet (sea snails especially), all hell will break loose.
  • The Bus Came Back: He, or his species somewhat, makes a cameo appearance in "Gary & Spot", where he's shown to be more on good terms with the two.
  • Cartoon Creature: He resembles a blowfish, piranha or angler fish in cute form, while his monster form resembles more of an eel. His species was in fact unnamed throughout the episode, though certain source releases call him a "nudibranch".
  • Cuteness Proximity: His cute form, which is enough to even woo SpongeBob into completely ignoring his warning from the seller and even straight-up steal him and take him home.
  • Eaten Alive: Almost did this to Gary and later on SpongeBob, the latter especially as a comeuppance for the way he treated Gary throughout the episode.
  • Ironic Name: He's anything but puffy or fluffy.
  • Jerkass: He solely exists to endanger the lives of other pets — especially snails.
  • Jerkass at Your Discretion: He only attempts to attack Gary when SpongeBob is not watching.
  • Karma Houdini: Downplayed, although Gary does succeed in driving him away, Puffy Fluffy faces no other consequences for attacking him and SpongeBob and destroying their house; SpongeBob himself doesn't even realize Puffy was trying to kill him!
  • More Teeth than the Osmond Family: His teeth are very jagged and nasty-looking, complete with prehensile tongues with extra teeth!
  • One-Shot Character: Only appears in "A Pal for Gary".
  • Troublemaking New Pet: Was gotten by SpongeBob so Gary won't be lonely, but he hates other pets, and brawls Gary for the sake of it. When SpongeBob returns, he thinks Gary is responsible for roughhousing his "pal".
  • Vile Villain, Saccharine Show: Would anyone expect this sort of frightening abomination to show up on the show? He also tries to devour SpongeBob and Gary, wrecking their house in the process. There’s NOTHING funny about him, either.
  • What Happened to the Mouse?: After Gary sends him away, there's no question to what happened to Puffy Fluffy. Maybe he's fled Bikini Bottom to parts unknown...

    Sam Star 

Sam Star

https://static.tvtropes.org/pmwiki/pub/images/sam_star.png
Voiced by: Bill Fagerbakke
Debut: "Big Sister Sam"
Patrick's short-tempered, unpleasant, extremely stupid older sister.

    The Warden 
https://static.tvtropes.org/pmwiki/pub/images/spongebob_warden.png
Voiced by: R. Lee Ermey
Debut: "Inmates of Summer"

The leader of Inferno Island, the prison island SpongeBob and Patrick accidentally wind up at.


  • Cool and Unusual Punishment: After learning about the kiddy stuff that happens at the summer camp SpongeBob meant to go to, he brings his inmates over to the camp as a punishment for their failed attempt at escaping.
  • Drill Sergeant Nasty: Ermey seems to be having a blast as this character, giving him No Indoor Voice and a Large Ham personality.
  • Friendly Enemy: SpongeBob and Patrick treat him like he's the camp counselor and have no idea he's a tough as nails prison warden.
  • Manly Tears: Sheds these during SpongeBob and Patrick's play.

    Chip, Penny, and Used Napkin 

Spongebob's new "friends" when he decides to stay indoors.


Comic Characters

    Squidmund 

Squidmund

A character who only appeared in the comic "Squidmund Visits", Squidmund is Squidward's cousin.

    The Kraken 

The Kraken

https://static.tvtropes.org/pmwiki/pub/images/the_kraken.png
A one-shot villain appearing in the "Untidaled" comic arc. A former circus barker who felt unloved at his profession, he develops a taste for sea creatures and decides to drain all water from Bikini Bottom and eat everyone alive by luring them with krabby patties.
  • Attention Whore: He's implied to be this, since his real concern was less of being solitary and more because people didn't look at him as just as important as the other circus personalities.
  • Bond Villain Stupidity: Just as he's about to eat the Bikini Bottom population, he decides to grant Pearl a final wish to sing a song as they await their doom. He failed to realize it was a trap by Mr. Krabs to shatter the glass jar they were all trapped in, causing the Kraken's entire scheme to unravel and for him to be flicked away to parts unknown.
  • Canon Foreigner: He doesn't appear in any other SpongeBob media.
  • Evil Is Petty: He has no justifiable reason to devour all sea life in Bikini Bottom other than people not noticing him, which is hardly a sympathetic excuse to begin with.
  • Faux Affably Evil: He tries to sound cordial to SpongeBob and the gang, but they see through that facade quickly.
  • Freudian Excuse Is No Excuse: His resentment towards fellow sea life stems from his years of nobody bothering to glance at him as he was attracting patrons to the circus. However, it was his decision not to actually connect with them and decides to just eat them all out of pettiness.
  • From Nobody to Nightmare: From carnival barker to evil Omnicidal Maniac.
  • Hate Sink: A completely despicable, nauseating person with nothing to offer in terms of redeeming traits.
  • I'm a Humanitarian: He eats fellow fish even knowing that they are sapient like him.
  • Jerk with a Heart of Jerk: Just as he's about to eat all of Bikini Bottom in one gulp, he allows Pearl to sing one final song. It's obvious, though, that this is so he can enjoy their misery than show any real compassion. This ends up proving fatal for him.
  • Laughably Evil: He shows some shades of this, though it does nothing to detract his villainy in-universe.
  • Near-Villain Victory: He would've potentially succeeded in devouring all of Bikini Bottom had he not granted Pearl a final request to sing a song. Oops, indeed.
  • No Name Given: He isn't named at all in the comic, just being called "The Kraken".
  • Omnicidal Maniac: Decides to suck all the water out of Bikini Bottom to devour all aquatic life in the city just because no one cared for him as a circus worker.
  • Sadist: He takes a callous pleasure in devouring people.
  • The Starscream: He was initially hired by Plankton to hold Pearl hostage to get Mr. Krabs to hand over the Krabby Patty formula, but soon betrays him and decides to eat everyone alive, Plankton included.
  • Uncertain Doom: Whether or not he survived being flung out of the dome is left unaddressed.
  • Vile Villain, Saccharine Show: In a franchise dominated by comedy and harmless villains, the Kraken stands out for being by far the most evil and sadistic villain SpongeBob and company has ever come across, even surpassing Dennis in terms of complete depravity.
  • Would Hurt a Child: Has no qualms eating children, especially Pearl.

Incidentals

    In General 
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https://static.tvtropes.org/pmwiki/pub/images/ed632f85_4850_4e46_a2f4_abca6e011a18.jpeg
https://static.tvtropes.org/pmwiki/pub/images/0a43b60b_9633_4af0_ada6_4d03b1bfaae0.jpeg
The general assorted sea life that inhabit Bikini Bottom.
  • Demoted to Extra: Zig-zagged, some of them, such as Tom, Don The Whale, Sandals, Harold, Nat Peterson, Norma Rechid, Nancy, Evelyn, Jimmy Gus, and Scooter were more prominent in the first three seasons, but then quickly froze into the background, while others, such as Frankie Billy and Mimi quickly became far more important as the series goes on although they lost prominence since Season 9.
  • Didn't Think This Through: All of them have their moments of impulsivity.
  • Fatal Flaw: All of them have one, but just about every member showed signs of impulsiveness and hostility towards the others.
  • Hypocrite: Most of them are this.
  • Jerkass: Excluding Scooter, all of them are consistently hostile and antagonistic.
  • Jerk with a Heart of Gold: They all had their moments of being hostile, but they're generally good people.
  • Out of Focus: They have all been out of focus for the most part and rarely have any role in the series, however, they do play a (usually antagonistic) role in the series quite a bit.
  • Recurring Extra: They are indeed background characters after all.
  • Too Dumb to Live: They have hardly any moments of thinking things through and are very dimwitted.
  • You Are Number 6: Most of the characters do not have official names and are referred in the production documentation as "Incidental #". Ex: Fred is "Incidental 1", Tom is "Incidental 6", Scooter is "Incidental 38", etc. Most of the time the same incidental character will be given multiple names but some of them (like Fred) were later given official names by the crew. While others have been given unofficial names by the fandom.

    Tom 

Tom

https://static.tvtropes.org/pmwiki/pub/images/tom1.PNG
"Did you say... Chocolate?"
Voiced by: Mr. Lawrence
Debut: "Ripped Pants"

A large olive-green fish with anger issues who is well known for saying "CHOCOLATE!"


  • Ax-Crazy: Even before the "CHOCOLATE" incident, there were a few instances where he was pretty terrifying.
    • When SpongeBob says "April Fools" when he gives him back his drink, he grabs SpongeBob by the shirt and screams, demanding to know what he's done.
    • When Bubble Buddy first was in Bikini Bottom and wreaked havoc, he piped up with this exchange.
      Tom: He poisoned our water supply, burned our crops, and delivered a plague unto our houses!!!
      Townspeople: He DID?!?
      Tom: No! But are we gonna wait around until he does?!?
  • Comedic Sociopath: He qualifies to some extent, given how unpredictably hostile he can be.
  • Demoted to Extra: He, like Scooter, was more prominent in the first three seasons, but then became demoted to more non-speaking roles.
  • Hair-Trigger Temper: He has gotten angry more than one time, which implies why he has a tendency to yell.
  • Jerk with a Heart of Gold: Although he often gets angry over the smallest things, he can be nice to the other background characters, mainly Fred, who is implied to be his best friend.
  • Large Ham: A prime example is when he chases after SpongeBob and Patrick for selling him chocolate in "Chocolate with Nuts". 'CHOCOLATE! CHOCOLATE!'
  • No Indoor Voice: He shouts a lot of his dialogue.
  • New Job as the Plot Demands: He's been a bartender, a cameraman, a mattress salesman, a tour bus driver, an actor, a retirement home orderly, a business executive, a dentist, and a bank teller.
  • Only Sane Man: Tom is usually this due to his laid-back behavior. except when he's not.
  • O.O.C. Is Serious Business: Although he's one of the sanest characters, he goes berserk when during his infamous screaming of chocolate.
  • Real Men Wear Pink: He shows shades of this in the episode "Tutor Sauce", where he sadly says his patty taste like sadness.
  • Serious Business: Apparently food. It took three days to make the potato salad SpongeBob inadvertently ruined in "No Weenies Allowed", he screamed at SpongeBob for forgetting his drink in "Pizza Delivery", nearly assaulted SpongeBob for supposedly tainting his drink in "Fools in April", screaming at his kids to eat their patties in 'Mimic Madness', holding in his anger when his son hated his ice cream in 'Hocus Pocus', and of course his infamous screaming of "CHOCOLATE!" in "Chocolate with Nuts".
  • Trademark Favorite Food: Do we even have to say what his favorite food is? 'CHOCOLATE! CHOCOLATE!'

    Scooter 

Scooter

https://static.tvtropes.org/pmwiki/pub/images/scooter.jpg
Voiced by: Carlos Alazraqui
Debut: "Ripped Pants"

A purple surfer fish who appears mostly in the background, but has some major roles.


  • Beware the Nice Ones: He is indeed friendly, but sometimes joins the riot with the other incidental characters.
  • Dropped a Bridge on Him: Subverted. He appears to be killed off in a contrived manner when he drowns in "Bubble Buddy", but he comes back in later episodes alive and well. Unless he's a ghost and Nickelodeon's Bikini Bottom Mysteries episode on him can be taken with some degree of canon.
  • Demoted to Extra: He was more prominent in the first three seasons, but then became demoted to more non-speaking roles.
  • Everyone Has Standards: He was just as offended as everyone else by SpongeBob pretending to drown in "Ripped Pants", and can only muster up a solemn "Dude..." to express his disappointment in him afterwards.
  • Nice Guy: Much less unpleasant compared to the majority of the other fish.
  • Not So Above It All: Despite being a Nice Guy, he has no problem being hostile like the other incidental characters at times.
  • Recurring Extra: Whenever there's an episode set at Goo Lagoon, he's usually there.
  • Signature Laugh: He has a recognizably fast-paced "haw-hawhahwhawhaw" laugh.
  • Surfer Dude: He can usually been seen indulging in the sport at the beach, and he has the drawl and lingo to match.
  • Token Good Teammate: Seems to be this among the other incidentals, as he isn't as antagonistic or hostile as them.
  • Too Good for This Sinful Earth: The friendliest incidental is the one who gets killed the most. First by drowning, second by inhaling bad breath and third by being Too Dumb to Live.
  • They Killed Kenny: He died several times but came back in later episodes thanks to Negative Continuity.
    • In "Bubble Buddy", he apparently drowned when SpongeBob left him buried up to his neck on the beach. He appeared later in that episode as a angel.
    • In "Something Smells", he gets killed by SpongeBob's bad breath.
    • In "My Pretty Seahorse", after he thinks Mystery the seahorse is a ride and inserts a coin into her, she kicks him and he explodes where he lands.

    Nat Peterson 

Nat Peterson

https://static.tvtropes.org/pmwiki/pub/images/8c87bdac_d87d_4eab_ad84_7d842d707992.jpeg
Voiced by: Dee Bradley Baker
Debut: Ripped Pants
A very calm yellow fish who mostly appears as a background character. However, he did have a major role in the episode "Plankton's Regular".
  • A Day in the Limelight: The episode "Plankton's Regular" was all about Nat becoming a regular customer at The Chum Bucket. The episode's climax revealed, however, that he wasn't going regularly- Karen was actually paying him to do, and after he can stomach no more chum, he gives up on the deal.
  • Borrowed Catchphrase: In "Squid Baby", Nat steals Fred's "My Leg!" catchphrase, in a rather witty and subversive manner.
    Nat: [horrified] MY FACE! MY FACE! [flatly] Also my leg, [horrified] BUT MOSTLY MY FACE!!!
  • Continuity Drift: Nat's name has changed from episode to episode, often being "Tucker" or "Peterson" (as his first name). However, the Bikini Bottom Mysteries episode, titled him "Nat Peterson", making this the closest we have to an official name.
  • Jerk with a Heart of Gold: He can be just as hostile and antagonistic as most of the incidentals, but he isn't a bad person aside from that.
  • Mellow Fellow: Generally pretty chill & laid-back, but like the other background characters, he isn't someone to forget to join the riot.

    Harold 

Harold Bill Reginald Scott

https://static.tvtropes.org/pmwiki/pub/images/4bcc86d2_e394_4c1d_8d1d_fbce481488d7.jpeg
Voiced by: Mr. Lawrence
Debut: Ripped Pants
A cranky blue fish with a shark fin who wears red trunks. Despite being a minor character, he is among the extras with the most appearances across the series.
  • Early Installment Character-Design Difference: In the first season and parts of the second season (before character models were revised), he was typically completely naked.
  • Flanderization: In the first season, Harold started off as a character who only got angry if things didn’t go his way, however, as of the second season, he gets angry over quite everything!
  • Given Name Reveal: His name was revealed in "Roller Cowards".
  • Hair-Trigger Temper: Similar to Tom, He’s frequently depicted as quick to anger.
  • I Have Many Names: As demonstrated above, his name is never consistent across the series.
  • Jerkass: Frequently unpleasant and rude to everyone.
  • Nutritional Nightmare: "Just One Bite" opens with him ordering a king-size Ultra Krabby Supreme with the works, double batter fried, on a stick, with a bottle of mayonnaise on the side.
  • Pet the Dog: He has moments where he can be friendly or decent. In "The Bully" he leads the townspeople in beating up the old man they thought was threatening to attack SpongeBob twice. In "Band Geeks" he gets over his hatred of Mr. Krabs and calmly makes peace with him once class ends.
  • Small Role, Big Impact: His role in some episodes, as he’s still always a minor character.
  • Sudden Name Change: As can be seen by the number of names he has listed above, his name is almost never consistent across the series, even though it can be assumed that every depiction of him is the same character.
  • Unwitting Instigator of Doom: Despite being a minor character, he has caused or contributed to several negative plot developments.

    Sandals 

Sandals

https://static.tvtropes.org/pmwiki/pub/images/5e9f140e_8adb_4ac7_83b5_841d2614ba7c.jpeg
Voiced by: Dee Bradley Baker
Debut: Christmas Who?
A light olive-green fish who is a bit of an idiot and is often seen in the background.
  • The Ditz: Sandals is definitely not the sharpest tool in the shed, somewhat justified because almost all characters on the show are stupid.
  • Jerk with a Heart of Gold: He generally joins the riot of other incidentals, but isn't really a bad person.
  • Kindhearted Simpleton: Not so much of a smart character, but still pretty amiable most of the time.
  • Simpleton Voice: He speaks in a dimwitted voice which absolutely matches his personality.

    Norma Rechid 

Norma Rechid

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Voiced by: Various
Debut: Ripped Pants
A tall, light orange fish who is commonly seen in the background.
  • Beware the Nice Ones: She, along with Scooter, is one of the nicer incidental characters, but she sometimes joins the riot with the other incidental characters.
  • Nice Girl: She's one of the nicer and more generous incidental characters, for example, she hugged SpongeBob and offered SpongeBob and Squidward cookies.

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