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!Main Characters


[[folder:[=SpongeBob=] [=SquarePants=]]]
-->''"I'm ready!"''

->Voiced by: TomKenny
->Debut: ''"Help Wanted"''

An outgoing sea sponge who lives in a pineapple under the sea, as the show's ThemeTune implies. Works as a fry cook at the Krusty Krab. Although not very bright, he has a good heart and constantly strives to help his friends...even when they don't really ''want'' it.

* TheAce: Occasionally, though generally only when he needs to make someone else jealous.
* AchievementsInIgnorance: In "House Sittin' for Sandy", he spends quite a while in Sandy's treedome without a helmet and manages not to dry up until Patrick visits and [[CentipedesDilemma reminds him that the treedome is filled with air.]]
* AdaptationalBadass: In some of the Video Games.
* {{Adorkable}}:
** He comes off as this for his good heart and cheerful, naive personality.
** His occasional thick-rimmed glasses and his nerdier traits (especially in the first season) like pulling out a textbook when he first sees Sandy.
** His hobbies include bubble-blowing, jellyfishing, reading superhero comics, bedtime stories, and playing in giant cardboard boxes.
* AlliterativeName: '''S'''pongebob '''S'''quarepants.
* AllLovingHero: No matter how much the others find him annoying or treat him badly, Spongebob genuinely loves everyone and everything.
* AlwaysSomeoneBetter: Occasionally plays this role to Squidward and once plays it for Patrick in ''Big Pink Loser''.
* AmbiguouslyGay: Parents made a big controversy of his sexuality after the movie and the episode where he raises an Oyster with Patrick. The writers have since said that he's canonically asexual, though they do slip in a few lines containing some HomoeroticSubtext. It gets more and more exaggerated as the show goes on.
* AndCallHimGeorge: His attitude towards Squidward, Mrs. Puff, Gary, Barnacle Boy... everyone in Bikini Bottom at some point or the other.
* AnnoyingLaugh: Sounds like a sheep's bleating.
* {{Asexual}}: [[TeasingCreator Stephen Hillenburg]] plays around with this quite a bit. He mentions that Spongebob is asexual, but since actual sponges usually (though not always) reproduce by budding, he could be referring to the biological aspect only. Because there's little indication in-series that he's ever attracted to anyone, he might be asexual in orientation as well.
** Mentions that he has a crush on Sandy could mean one of four things: he is asexual but heteroromantic [[note]](Not sexually attracted to anyone, romantically interested only in the opposite gender.)[[/note]] , [[SingleTargetSexuality demisexual]], biologically asexual but heterosexual in terms of orientation, or...it's simply ShipTease, an accepted staple of any show.
* AttentionDeficitOohShiny: His attention can be limited and he's prone to distraction.
-->'''Squidward:''' Attention, everyone, run for your lives! Robots have taken over the world! ''Our'' world! What do we do now?!
-->'''Spongebob:''' I don't know!! ... Hey, a nickel!
-->'''Squidward:''' ''Spongebob''.
-->'''Spongebob:''' ...sorry.
* BadassAdorable: He's an {{Adorkable}} little guy who's saved the day a couple of times. And he's a master of karate.
* BerserkButton: Don't hurt his friends; even if you're Eugene Krabs.
* {{Beware the Nice|Ones}}/[[BewareTheSillyOnes Silly Ones]]: He's a very kind-hearted and sweet-natured guy, but as shown in "Can You Spare a Dime", when he gets mad, he gets ''scary''.
* BigGuyLittleGuy: The little to Patrick's big.
* BornLucky: Sometimes, good things just seem to happen to him out of nowhere. Especially noticeable in comparison to Squidward.
* BreakTheCutie: Subverted in "Fools in April," played straight in "Have You Seen This Snail?" and others.
* BunnyEarsLawyer: Despite his [[{{Cloudcuckoolander}} weirdness]] and frequent wacky antics, Spongebob is very good at his job and loves it so much that he'll gladly take any opportunity to do more work.
* BurgerFool: Subverted. He ''loves'' his job and people come from all over to eat his Krabby Patties.
* ButtMonkey: If an episode focuses solely on Spongebob (Picture Day and Blackened Sponge, for example) something bad is almost certain to happen to him.
* CampStraight: Whenever he cross-dresses or has to act like a girl, he seems to enjoy it very much, as well as having a pretty girly giggle. Despite this, there have been hints that he has a crush on Sandy, a girl.
* CaptainOblivious: Taken UpToEleven in "A Pal for Gary," in which, even after seeing Puffy Fluffy's [[EldritchAbomination monstrous true form]] firsthand and ''nearly being eaten by him'', he fails to notice anything amiss.
* {{Catchphrase}}: "I'm ready!"
* CharacterTitle: And the main character of the show.
* ChasteToons: In one of the comics, he has three nephews.
* {{Cloudcuckoolander}}: Considerably so, though DependingOnTheWriter, he can on rare occasions play the role of OnlySaneMan.
* CloudcuckoolandersMinder: To Patrick. He's not the sharpest knife in the box himself, but he's certainly more level-headed than his best friend.
* ComicalOverreacting: To levels just avoiding DramaQueen.
* ComicTrio: TheLeader to Patrick's TheFool and Squidward's OnlySaneMan.
* CompetitionFreak: DependingOnTheWriter, Spongebob has a rather SeriousBusiness attitude about games, he once became paranoid about Squidward winning Employee Of The Month, and took sandcastle building with Patrick to its most surreal.
* CovertPervert: If he, along with Patrick and Mr. Krabs, tries to steal panties from a woman's house in ''Mid-Life Crustacean'' is anything to go by.
* CuddleBug: He loves cuddling, [[DoesntLikeBeingTouched much to Squidward's chagrin.]]
* TheCutie: Most of the time, anyway. In later seasons he's waltzing into JerkassBall territory more often than not.
* DeadpanSnarker: Not as much as Squidward, but he has his moments mostly in the pre-first movie seasons.
* DependingOnTheWriter: His popularity in town varies depending on the episode. In some, he's beloved by everyone for his nice guy attitude and helpful nature, while in others he's hated to the point where the town actively tries to avoid him due to how obnoxious he is. In others, nobody has any idea who he is.
* DetachedSleeves: Rare male example. Probably not intentional (they supposed to be part of his shirt, apparently), but due to his AbnormalLimbRotationRange, they're not actually attached to his shirt. During the few times his "square pants" and shirt are torn off, he keeps the sleeves.
* {{Determinator}}: He may be a pushover most of the time, but nothing will stop him doing his duty for the Krusty Krab, whether it's delivering a pizza or saving his boss from execution.
* TheDogBitesBack: To Squidward in "Can You Spare A Dime?" [[StatusQuoIsGod It doesn't last long though]].
* TheDragon: Unwitting one to Mr Krabs.
* TheDitz: More so as the series progresses.
* DrivesLikeCrazy: Probably the king of this trope in Western Animation. In early episodes, he states that he ''does'' know how to drive, but he always ends up panicking behind the wheel and cannot concentrate. Due to {{Flanderization}}, it deteriorates to the point where, whenever he gets behind the wheel, he's a [[WalkingDisasterArea Driving Disaster Area]]. Although in "Pizza Delivery," he drives a ''giant rock'', and he drives a giant sandwich in the movie. Apparently he can drive anything ''but'' a boat!
* DrillSergeantNasty: When training Gary for the Snail Olympics, he puts Gary through Boot Camp training. This shows he does indeed have a serious side when things get real.
* EpicFail: Poor guy managed to get fired five times in one day. Not mention, failing to get your boating license, ''even in your dreams!''
* ExtremeDoormat: Has shades of this, particularly around peers such as Mr. Krabs, often making him a convenient patsy. Occasional stories show him attempt to gain abrasive skills, only to decide he is happy being "aggressively nice". And it's almost impossible for him to say no to Sandy.
* FailureIsTheOnlyOption: He can never get his boating license. ''[[YankTheDogsChain Ever.]]'' '''[[UpToEleven Not even in his dreams!]]'''
* FamedInStory: DependingOnTheWriter, he is often portrayed as a local celebrity for being the Krusty Krab's frycook.
* {{Flanderization}}: After season 3, he gravitated steadily towards the role of TheFool.
* TheFool: Mostly in later seasons.
* FourTemperamentEnsemble: The Sanguine.
* FragileFlower: He's a crybaby. He cries ''all the time''. He even mentions in one episode that he cried for ''twenty minutes'' after stubbing his toe.
* TheGadfly: Certain episodes imply that he will sometimes act ''deliberately'' annoying when his life is in danger, so his captors will release him- such as "Welcome to the Chum Bucket," "Spongebob Meets the Strangler," and "Born Again Krabs." He manages to drive Plankton, a serial killer, and the Flying Dutchman ''insane'' enough to allow him to escape safely.
* GeniusDitz:
** He can flip burgers to suit a royal palate! A running gag is that he's also great at math, and artistically inclined. If he focuses, he can be ''really'' smart.
** In a post-movie episode, he was asked to dismantle a car and then put it back together. He ended up building a ''functional rocket ship''. His teacher was amazed.
* GoodWithNumbers: He's good at math. When Squidward asks him for change for a bill, he replies with [[MotorMouth this]]:
-->'''Spongebob:''' Do you want four quarters? Or ten dimes? Or twenty nickels? Or one hundred pennies? Or one quarter, three dimes, seven nickels, and ten pennies? Or, if you give me a five dollar bill, your options are...
* HealingFactor: Being a sponge, he can regenerate lost limbs. This is exemplified in an episode where he removes an arm and a new one pops up in its place. He then removes his other one, and the process repeats until he has a wall of arms holding arms. Said episode involved a scary story about a clumsy fry cook who cut off his own hand. Spongebob began repeatedly removing his arm and regrowing it to get an idea of what it was like, not seeing what was so scary about it.
-->'''Squidward''': Except he wasn't a sponge.
-->'''Spongebob''': So?
-->'''Squidward''': ''So it didn't grow back!''
** Strangely enough, he can even regenerate ''[[UpToEleven his internal organs]]'' as well. Because of this, he could theoretically be a good organ donor.
* HeterosexualLifePartners: With Patrick. Believes himself to be this with Squidward. He isn't.
* HiddenDepths: He's repeatedly shown to be artistically gifted, a rather Shakespearean thespian and a talented gardener, though almost none of these traits are ever important to the plot.
* HorribleJudgeOfCharacter: Especially with regards to Mr. Krabs. He also thinks that Squidward is a good friend of his and that Mrs. Puff is a nice teacher willing to help him, when in reality, both of them hate him to the point of insanity and want nothing more than to be rid of him.
* HotBlooded: Especially when it comes to [[MundaneMadeAwesome fry cooking.]]
* HyperCompetentSidekick: To Squidward, Patrick and Mr. Krabs at different times. He's constantly shown to be pretty much the only competent employee at the Krusty Krab, and is luckily ''incredibly dedicated''.
* HypocriticalHumor: Anytime he is forced to put up with someone as obnoxious and clingy as himself, he will become as irritable and neurotic about their lack of consideration as Squidward does about him. In one episode, he encountered a girl who looked ''exactly like him'' and he referred to her as "ugly" behind her back.
* IdiotHero: One of Western Animation's most iconic examples. Although in the earlier seasons he was more of a naive CloudCuckoolander than an IdiotHero.
* IdiotHoudini: To the point when he gets away with making Squidward and Mrs. Puff's lives a living hell. An example being in a short that involves Mrs. Puff trying to cover "Boat Smarts". Being the reckless driver he is, Spongebob causes a crash, and a big accident on the road. Instead of apologizing or feeling bad, he chastises Squidward and Mrs. Puff, claims they forgot their boat smarts, and drives off laughing without punishment.
* IncorruptiblePurePureness: Simply injecting himself with DNA from one of Spongebob's tears was enough to make Plankton pull a HeelFaceTurn, and his heart is so pure that he's immune to jerktonium (a chemical which turns people into jerks.)
* InnocentBlueEyes: He has an innocence about him.
* InnocentlyInsensitive: All though SpongeBob means well, he unintentionally ruins other peoples' lives. Just ask Squidward or his boating school teacher Mrs. Puff. At worst, his behavior can also cross under UnsympatheticComedyProtagonist territory.
* InTouchWithHisFeminineSide: He wears his heart on his sleeve, cries openly and ''very'' often, has some effeminate mannerisms, and has been shown wearing women's clothing several times. There's also the fact that he apparently ''owns'' a lot of women's clothing and make-up in the first place. Patrick mocks him for this in "I'm With Stupid," saying, "Do you have any mascara I could borrow?"
* JerkassBall: He's still a nice guy, but he does have his moments of being a huge prick in the post-movie seasons, especially in the infamous episode "A Pal For Gary," [[UngratefulBastard when he acts like a complete jerk to Gary, even after Gary saved his ungrateful life]].
* {{Keet}}: He's small, cute, cheerful and exuberant.
* KindheartedSimpleton: The large majority of times, [[StopHelpingMe he at least means well]], anyway.
* [[KindheartedCatLover Kindhearted Snail Lover]]: His pet snail, Gary.
* TheKirk: More rational than Patrick; still not as level-headed as Squidward or even Mr. Krabs.
* LargeHam: One has to assume that Spongebob's taken drama lessons at some point or another, because overdramatizing is his specialty. He can be more reserved when he wants to be, but it's usually hard for him to go a full episode without lapsing into this at some point.
* LethallyStupid: His relentless stupidity has driven many people (mainly Squidward and Mrs.Puff) borderline, if not completely, insane.
* MadeOfIron: Depends on the episode. Spongebob can take a lot of pain, and he just shrugs it off or regenerates.
* ManChild: He's old enough to hold down a job and live on his own, but is so immature and goofy that he's been referred to as a kid on multiple occasions.
--> '''SpongeBob:''' I'll have you know [[MinorInjuryOverreaction I stubbed my toe last week while watering my spice garden, and I only cried for TWENTY MINUTES!]]
* MarriedToTheJob: He's very devoted to his job at the Krusty Krab.
* MasculineGirlFeminineBoy: Feminine Boy to Sandy's Masculine Girl.
* MesACrowd: Sometimes after being cut into pieces, those pieces form miniature Spongebobs.
* MinionWithAnFInEvil: To Mr. Krabs sometimes, and in the episode "Welcome to the Chum Bucket" to Plankton.
* MotorMouth: Tends to talk ''really'' fast and rapidly when he's very excited, much to the annoyance of other people.
* MrImagination: He provides the page quote. Another example (though it doesn't spell it out as clearly) is an episode where Spongebob manages to have lots of fun with only a piece of paper Squidward discarded. When Squidward tries, he can't do any of the things with the piece of paper Spongebob did, probably because he has no imagination.
* MundaneMadeAwesome: In "Procrastination", when writing an essay, he makes the pencil fall like a toppling airplane against the sheet of paper and begins writing rapidly while shouting "Yeah!" When he's finished, he lets go of the pencil which fumes from the use of it, then it turns out he just [[CrowningMomentOfFunny wrote "The" in a very artistic way.]]
* NeatFreak: In contrast to his friend [[FatSlob Patrick]].
* NiceGuy: Almost absurdly nice, on a good day: he's a borderline doormat sometimes. [[JerkassBall Most of the time.]]
* NiceMeanAndInBetween: He's so nice it hurts. [[BewareTheNiceOnes Most of the time]].
* NighInvulnerability: He seems to be practically impossible to kill at times (he can regrow ''internal organs''). In fact, only when he suffers from a ''very painful'' situation [[spoiler: such as launching himself onto an island made of spikes or being caught in the demolition of a high tower]] does he not regenerate near-instantly from his injuries.
* NoIndoorVoice: Whenever he gets excited or hyped up about something.
* NoSenseOfPersonalSpace: As Squidward says in one episode: "Spongebob, do you remember that little talk we had about ''personal space?''"
* NoSocialSkills: Frequently laps into this territory.
* NosyNeighbor: Towards Squidward (see above).
* OlderThanTheyLook: He's a grown adult in his twenties (his driver's license, when seen, says he was born on July 14th, 1986) but with his freckled dimpled cheeks, high-pitched voice, big blue eyes, naive demeanor, long eyelashes, and short stature, he easily passes for an actual ''child''.
* ObliviouslyEvil: Not technically "evil," but he fails to realize the hell he puts Squidward through.
* ObfuscatingStupidity: Several episodes do show him acting serious and even competent, suggesting that he can choose to be smart anytime he wants.
* OneNoteCook: Spongebob can make excellent Krabby Patties, sometimes it's the only thing he can make. He doesn't even know what a "salad" is in an early episode and the concept of just lettuce and tomato shocked him.
* TheOneWhoWearsShoes: With the exception of Sandy, and even then, she takes them off in her Treedome. In one early episode, it's implied he's been wearing shoes since ''before he was born''.
* PapaWolf: To Gary, his pet snail. Also shows up when he's left to care for a bunch of baby worms.
* PingPongNaivete: Is capable of surprising bouts of [[GeniusDitz resourcefulness and wisdom]] and can even play the StraightMan on occasion, but can never figure out that [[StopHelpingMe half the town wants him to leave them alone]].
* ThePollyanna: He's always cheerful and positive, no matter what.
* ThePowerOfRock: CrowningMomentOfAwesome in The Movie, along with episodes like "Ripped Pants," "Band Geeks," and "Hello Bikini Bottom."
* TheProtagonist: The main character of the show.
* PunchClockVillain: PlayedWith, he willingly works for [[BigBad Mr. Krabs,]] or rather, just the job itself, but he only occasionally does malicious things. Such as [[spoiler: not actually]] killing a health inspector, or feeding people spoiled food.
* RedOniBlueOni: The red to Squidward's blue.
* RidiculouslyCuteCritter: Just look at him!
* RubberMan: He can stretch his limbs towards great lengths & put himself together after being cut into pieces.
* SarcasmBlind: Whenever Squidward delivers sarcastic remarks at him, he never seems to notice.
* SelectiveObliviousness: He just ''cannot'' seem to comprehend the obvious fact that not only is Squidward not his best friend, but in fact hates him to the point of madness. Even though Squidward has flat-out told [=SpongeBob=] to his face that he can't stand him on at least one occasion.
* SeriousBusiness: He once cried because ''he arrived at the Krusty Krab one minute late.''
* ShipTease: There's a lot with Sandy, for example whenever they're at the beach, his attempts to impress her are usually what create the plot.
* SicklyNeuroticGeek: He has the tendency to start wheezing loudly when he gets too excited about something. Krabs also implied in one episode that he takes allergy medication.
* SignatureLaugh: It's annoying, but so much a part of his character that it alone is enough for one to recognize him.
* SmallAnnoyingCreature: Especially if you ask Squidward.
* SmallNameBigEgo: DependingOnTheWriter.
* SmallTaxonomyPools: Why he was made a sponge, an animal rarely mentioned in media.
* StrongAsTheyNeedToBe: Spongebob's strength varies from episode to episode. Some episodes depict him as so weak he couldn't even lift a straw, other depict him lifting a mailbox straight off its hinges. This also applies to his skills in karate; at times he can fight Sandy evenly or even beat her with ease, while at other times he's incompetent to the point where Sandy [[CurbStompBattle literally kicks him around like a football.]]
* TheSouthpaw: He is said to be left-handed or ambidextrous, some episodes you can see him using his left hand to flip patties. In "I Was A Teenage Gary," he says that he's a leftie, but he claims to be ambidextrous in "You Don't Know Sponge." He probably has a preference for his left hand.
* SpeaksFluentAnimal: Can understand snails.
* [[SpeciesSurname Species Forename]]: Part of his full forename.
* SphereEyes: He has them.
* StalkerWithoutACrush: On Squidward.
* StepfordSmiler: Some episodes imply that he's one.
* StoneWall: Depicted as one in "The Bully," where he took punches to the head for an entire week without any damage, until his assailant passed out from exhaustion. Of course, another episode stated that he cried for 20 minutes after stubbing his toe, so this largely depends on RuleOfFunny.
* SuperSpeed: As the Quickster in ''Mermaid Man and Barnacle Boy V''.
* TenderTears: He cries when bad things happen to other people. At one point, he got tearful when he saw a snail stuck in a tree.
* TooDumbToLive: At his worst.
* TookALevelInDumbass: When the series began he was fairly intelligent but incredibly naive and childlike; in the later episodes he is barely smarter than pre-first movie Patrick. In any case, Patrick still makes him look like a genius by comparison.
* TookALevelInJerkass: In later seasons, see UnsympatheticComedyProtagonist.
** The episode "Demolition Doofus". While his injuring Mrs. Puff was an accident, he takes the level when he shows absolutely no remorse whatsoever for his actions, and makes jokes about her situation instead of apologizing. Mrs. Puff, however, wasn't any better during this incident however.
* TrulySingleParent: Spongebob, like real sponges, displayed the capacity for asexual reproduction in "Pressure", though the new Spongebobs were gone by the next scene.
* TurnTheOtherCheek: Case in point: no matter how heinous Mr. Krabs' actions are or how badly he is treated, [=SpongeBob=] will ''always'' forgive him by the end of the episode.
* UndyingLoyalty: His unbreakable dedication to the Krusty Krab and by extension Mr. Krabs surpasses even his loyalty to his friends.
* UngratefulBastard: In "A Pal For Gary". Throughout the whole episode, he has [[NeverMyFault blamed Gary for Puffy Fluffy's actions, cumulating in scolding Gary]] ''[[TooDumbToLive when the snail is clearly about to be eaten by the now-monstrous Puffy Fluffy]]''. Puffy puts Gary down and starts eating Spongebob, and Gary (who has ''NO REASON WHATSOEVER'' to help Spongebob, at this point) bravely comes to the rescue, acting like a cowboy and whipping Puffy to knock Spongebob out of his mouth and drive him away. How does Spongebob reward this act of heroism? He tries to get Puffy Fluffy back, but after that fails, he [[NeverMyFault scolds Gary AGAIN,]] ''[[CaptainOblivious completely]]'' ignoring the fact that the snail ''[[TookALevelInJerkass just saved his ungrateful life]]''!
* UnsympatheticComedyProtagonist: Zigzagged. His behavior can sometimes go beyond InnocentlyInsensitive. Sometimes in episodes when he pesters and causes pain to the other characters (Boat Smarts, Good Neighbors, A Pal For Gary, etc), and we're supposed to root for him.
* VagueAge: {{Subverted|Trope}}, in a dream when he got his driver's licence it has the birth date July 12th 1986, meaning Spongebob is 28. Though, that doesn't really explain how he has over 300 employee of the month awards or how he failed the drivers test over ''one million times.''
* VocalEvolution: His voice has gotten a lot higher in later episodes.
* [[WhyDidItHaveToBeSnakes Why Did It Have To Be Clowns?]]: Apparently, Spongebob is seriously afraid of clowns, as the only reason he summoned all of Bikini Bottom to his Pineapple in the episode "Rodeo Daze" was to save Sandy from the clowns at the rodeo.
* WideEyedIdealist: Luckily for him, though, his idealism [[{{Reconstruction}} usually makes things work out for him]].
* {{Workaholic}}: At one point, Mr. Krabs's forcing him to take a vacation nearly caused him to ''go insane''. In "The Splinter," he frantically tries to avoid being sent home early. In "Suds," he drags himself to work, despite being so sick that he can barely stand or keep his eyes open and he's sneezing constantly. Despite [[BlatantLies insisting that he is okay]] (punctuated by a loud sneeze,) Mr Krabs sends the guy home so he can rest. This exchange from "Graveyard Shift" says it all:
--> '''Mr. Krabs:''' From now on the Krusty Krab is open 24 hours a day.\\
'''Squidward:''' What...!\\
'''Spongebob:''' Wooow! Now we ''never have to stop working''!
* YesMan: While he occasionally plays an ignored voice of reason to Mr. Krabs, he generally goes with whatever he says without raising a finger.

[[folder:Patrick Star]]
->Voiced by: Bill Fagerbakke
->Debut: ''"Help Wanted"''

A not-quite-bright starfish and Spongebob's [[HeterosexualLifePartners best friend]].

* AccidentalTruth: In the episode "Patrick-Man!", he started attacking patrons at the Krusty Krab, believing that one of them was a supervillain in disguise. When Mr. Krabs is about to throw him out, it turns out that the Dirty Bubble was in fact there in disguise.
* AcquiredSituationalNarcissism: All the freakin' time.
* {{Acrofatic}}: He's pretty quick and nimble for a fat guy, [[DependingOnTheWriter though, it depends.]]
* AdiposeRex: In "Rule of Dumb".
* {{Adorkable}}: In earlier seasons.
* AllTakeAndNoGive: As shown in "Yours, Mine, and Mine," in Patrick's eyes, sharing amounts to [=SpongeBob=] paying for such things as food and toys and Patrick getting them all to himself.
* AmbiguousDisorder: There's often the implication that Patrick has genuine mental problems in addition to just being extremely stupid. Just see AxCrazy below.
* AttentionDeficitOohShiny: PlayedWith, sometimes he's easily distracted, and sometimes nothing distracts him.
* AttractiveBentGender: When he's disguised as Patricia in "That's No Lady", every male in Bikini Bottom is attracted to him.
* AxCrazy: In "Valentine's Day" and "Nature Pants".
* BelievingTheirOwnLies: In "I'm With Stupid," he made a plan with [=SpongeBob=] to have [=SpongeBob=] pretend to be stupid for Patrick's parents so Patrick would look smarter by comparison. Somewhere along the way, he began to think that [=SpongeBob=] really ''was'' stupid and that he himself was a genius.
* BerserkButton: In the first three seasons, Patrick would go a rampage if anything greatly upset him. Examples include being the only person who didn't get a gift from Spongebob on Valentine's Day, Spongebob living with the jellyfish, and being called "Tubby".
* BewareTheSillyOnes: Seriously, he can go from being delightfully silly one moment to being an AxCrazy psycho the next.
* BigGuyLittleGuy: The big to Spongebob's little.
* BigEater: Throughout the series.
* BigFun: Patrick is a funny, lovable fat guy.
* TheBigGuy: Fits all the criteria.
* BumblingSidekick: And considering whose sidekick he is, it's an accomplishment.
* ButtMonkey: At times.
* ChildhoodBrainDamage: It is often suggested that Patrick's stupidity is the result of frequent head injuries. In "Squidward the Unfriendly Ghost", Patrick mentions that he knows a lot about head injuries, then spaces out mid sentence. In "Big Pink Loser", Spongebob tries to discourage Patrick from mimicking him by hitting himself with a hammer, to which Patrick responds, "I've been doing this way before I started copying you."
* ComicTrio: TheFool to [=SpongeBob=]'s TheLeader and Squidward's OnlySaneMan.
* CovertPervert: If he, along with Spongebob and Mr. Krabs, tries to steal panties from a woman's house in ''Mid-Life Crustacean'' is anything to go by.
* DangerouslyGenreSavvy: For an idiot, Patrick may come off as this sometimes, mostly during some of his antagonistic roles.
* DeadpanSnarker: In the earlier episodes, and occasionally the later ones, but not as frequently.
* DespotismJustifiesTheMeans: In "Rule of Dumb," when he becomes the king of Bikini Bottom, he becomes a ruthless despot who believes he has the right to take and do whatever he wants.
* DestructiveSavior: In the episode "Patrick-Man!", he tries to fight the Dirty Bubble, but in the process he completely destroys the Krusty Krab and only defeats the Bubble through sheer dumb luck.
* {{Deuteragonist}}: In TheMovie, with Spongebob as TheProtagonist.
* DiabolusExMachina: Occasionally starting in season 7.
* DisguisedInDrag: When he thought a salesman was threatening his life, he, with Spongebob's help, disguised himself as a girl named [[GenderBlenderName Patricia]]. Cue every other male in Bikini Bottom (especially Squidward and Mr. Krabs) falling for him.
* TheDitz: He makes [[{{Cloudcuckoolander}} Spongebob]] look intelligent.
* DumbassHasAPoint: Occasionally.
** One such instance has him beating out Sandy in coming up with a plan.
** In earlier episodes, Patrick tended to be the one to suggest that Squidward didn't like him and Spongebob. Spongebob, naturally found such a notion unthinkable.
** Played with in "Wet Painters". After [=SpongeBob=] panics over getting paint on Mr. Krabs' first dollar (he was warned not to get paint on it), Patrick Star points out that Mr. Krabs' first dollar doesn't look any different from a normal dollar and could easily be replaced with any old dollar without Mr. Krabs knowing. The way this is played with is that Patrick immediately uses the dollar [=SpongeBob=] asked him to use on a vending machine instead of replacing the dollar that got covered in paint.
* DumbMuscle: He has been shown on a few occasions to be fairly strong, though this is especially prominent in the games.
* EvilCounterpart: To Spongebob in "The Fry Cook Games".
* ExposedAnimalBellybutton: He provides the trope's page image.
* FatBastard: At his worst, mostly in later episodes.
* FatBestFriend: To Spongebob.
* FatIdiot: Fat? Check. Idiot? Check.
* FatSlob: If "The Battle of Bikini Bottom" is to be believed.
* {{Flanderization}}: Patrick started out quite dim, however as the series progressed Patrick became dumber and dumber until it became the vehicle for all his appearances.
* TheFool: Along with Spongebob.
* FourTemperamentEnsemble: The Phlegmatic.
* GeniusDitz: He has his moments of brilliance. In at least one boating episode, he was shown to be perfectly accurate behind the wheel, as he could give perfect instructions to Spongebob simply via a large telescope, sometimes while barely paying attention, and in another episode, he even GOT a boating license despite not knowing everything there is to know about boats.
* HalfDressedCartoonAnimal: Only wears a pair of shorts.
* HeterosexualLifePartners: With Spongebob.
* HealingFactor: He can regenerate his arms in the unlikely case that they get severed.
* InnocentlyInsensitive: Like [=SpongeBob=], he can often be simply oblivious to and ignorant of how his behavior affects others. At times, the "innocent" part gets a little dubious.
* IdiotHoudini and KarmaHoudini: Often gets away with the things he screws up. The most notable moment is in ''I'm With Stupid'', when he lets Spongebob pretend he was stupid to impress his parents, but then he went too far and actually believed Spongebob really WAS stupid. This causes the sponge to run off in a rage...and Patrick gets away with it.
* {{Jerkass}}: On occasion, though as usual this was emphasized more due to {{Flanderization}} in later episodes.
* JerkWithAHeartOfGold: When he's not being a jerk, he still can be a well-meaning idiot and a good friend to Spongebob.
* KindheartedSimpleton: Mostly in the pre-movie seasons.
* LackOfEmpathy: At his worst (at his best he's just too dumb to know any better). It's another case of DependingOnTheWriter, in some cases he just blows off any pain or anguish he causes, in others he can be [[MyGodWhatHaveIDone brought to tearful remorse]] for [[PokeThePoodle stealing a donut that is actually his gift]].
* TheLancer: To Spongebob's TheHero.
* LargeHam: Moreso in earlier episodes, but still somewhat in later ones.
* LazyBum: In contrast to the hard-working Spongebob.
* LethallyStupid: Whenever he shows up in newer episodes, it's almost guaranteed everything will go horribly wrong.
* LoveHungry: See AxCrazy above; he has a tendency to react ''badly'' when under the impression that his friendship with [=SpongeBob=] is in jeopardy.
* MadeOfIron: Just like Spongebob, there isn't alot of things in the series that can put him in the hospital.
* TheMcCoy: With Squidward as TheSpock and Spongebob as TheKirk.
* ManChild: Patrick is an adult and he's almost as childish as Spongebob, if not [[UpToEleven more]].
* ManipulativeBastard: This is often how Spongebob goes along in one of his schemes. An example would be the episode in which Squidward accidentally swallowed his reed. Spongebob was told to watch the submarine, and Patrick asked him if he looked after it from the inside as well.
* TheMillstone: Whenever SpongeBob or anyone has a plan, Patrick is sure to screw it up, or do something stupid to make it worse.
* {{Neet}}: Does not have a job.
* NiceMeanAndInBetween: The in-between, at least in earlier seasons, where he wasn't as overly affectionate as [=SpongeBob=] but also wasn't as snide as Squidward. Later seasons, however, and even some earlier episodes, show that Patrick can be plenty mean in his own right.
* TheNoseless: He doesn't have a visible nose, [[DependingOnTheArtist though he's been portrayed as having nostrils on occasion]].
* ObfuscatingStupidity: Possibly. Some people suspect that Patrick is not really stupid, but a sociopath who does stupid and often assholish things ''on purpose'' just because he knows his low intelligence (or facade of it) will keep him from punishment. In "The Card" he even says "You can't always expect my usual brand of stupidity. I like to mix it up. Keep you on your toes."
* ParentalNeglect: In "Rock a Bye Bivalve," he repeatedly refuses to help the baby scallop. Though that in his eyes seems to be a traditional father figure.
* PoisonousFriend:
** Patrick was willing to assault Spongebob's kindly grandmother to keep him from being teased by others.
** An episode called ''Ghoul Fools'' showed that Patrick was willing to sacrifice Spongebob because he "lived a full life." This was actually lampshaded by Lord Poltergeist, who says sarcastically "[[SarcasmMode Great friend you got there]]."
* PsychopathicManchild: During his more villainous roles. For example, in "Valentine's Day," he threw a destructive temper tantrum when he believed that [=SpongeBob=] hadn't given him an actual Valentine's Day gift.
* RidiculouslyCuteCritter: Less so than Spongebob, but he's still chubby, pink, and cute-looking. He also has purple eyelids and flowered swimming trunks.
* RubberMan: As the Elastic Waistband in ''Mermaid Man and Barnacle Boy V''.
* SimpletonVoice: Even his voice sounds stupid.
* SnarkBall: Often.
* SpeciesSurname: Patrick ''Star'' is a starfish.
* StockSoundEffects: His BigEater moments are often punctuated by the sound of a Hoover vacuum cleaner.
* StoutStrength: He's overweight but still quite strong.
* StrawLoser: Spongebob is a often a brainless irritance to others, when paired alongside the even dumber Patrick however, he can often come off as vaguely competent and level headed.
* StrongAsTheyNeedToBe: Typically, he's strong enough to lift and throw things as heavy as a Dumpster with ease, but in "Krusty Krushers," he couldn't even tear a piece of paper in half and got a paper cut trying to do so.
* SuperStrength: At times, he is able to throw boulders as if they were pebbles & break through ''steel walls''. On at least one occasion, he actually managed to overpower Sandy.
* SweetTooth: Because he is a starfish, he loves to eat ice cream and many other junk foods.
* TemporarilyAVillain: At his worst.
* TooDumbToLive: At times, like when he forgets how to breathe.
* TooIncompetentToOperateABlanket: In "Big Pink Loser," he's shown needing to actually be talked through the simplest tasks, such as sweeping floors or opening jars.
* TookALevelInDumbass: He becomes much dumber in later seasons.
* TookALevelInJerkass: Even more so than Spongebob. The prime example? The episode "Rule Of Dumb".
* UnsympatheticComedyProtagonist: In post-season episodes, DependingOnTheWriter.
* VagueAge: He's apparently old enough to live on his own and have a job, but is childish to the point where everyone, including himself, refers to him as a kid. However, there are several episodes where Spongebob proves that he is capable of acting his age. And unlike Spongebob, his driver's license never revealed his date of birth, though it's assumed that he's around his late 20's like Spongebob is.
* VocalEvolution: His voice has gotten quite a lot deeper in later episodes. Almost to a creepy extent, he used to sound like a goofball, and now he sounds a tad thuggish.
* WalkingShirtlessScene: FanDisservice.
* WhyDidItHaveToBeSnakes: In one episode, he starts smashing Spongebob with his house in his sleep, screaming "SPIDERRRS!"
* WouldHurtAChild: When Spongebob teaches him karate he uses it to go around town destroying property, and attempts to kill a baby until Spongebob stops him.

[[folder:Squidward Quincy Tentacles]]
->Voiced by: Rodger Bumpass
->Debut: ''"Help Wanted"''

A cranky perfectionist squid/octopus. Works as a cashier at the Krusty Krab, and is Spongebob and Patrick's neighbor, much to his chagrin.

* AccidentalTruth: In "Funny Pants," after getting annoyed by Spongebob's non-stop laughing to a joke, Squidward tells him that if he doesn't give it a break, he'll blow out his "laugh box" and never be able to laugh again. In the end, he reveals the trick to Spongebob and laughs over it, finding out the hard way that laugh boxes are real.
* AllOfTheOtherReindeer: Hated, avoided, mistreated, and sometimes even assaulted by people in Bikini Bottom, sometimes for no reason.
* AmazingTechnicolorWildlife: DoubleSubverted, some squids and octopi look blue, but it's often because of water tint. Subverted in "Reef Blower", where he turns purple above (well, without) water. Double subverted for the other times he's been above water.
* AnimalsHateHim: At times. [=SpongeBob=] even implies in "The Thing" that Gary actually ''attacks'' him.
* AnnoyingLaugh: A very honky sounding one due to his nose.
* AntiHero: At best.
* AntiVillain: DependingOnTheWriter
* AttentionWhore: To ridiculous levels.
* BornUnlucky: Nothing ever goes right for him; he is injured, humiliated and/or driven insane almost every episode.
* BreakTheHaughty: Often happens to him. The most subtle example must be the episode in which Squidward tries moving to a town of inhabitants who are just like him...only to end up so bored that he flips out. Naturally, the town haughtily expels him.
* BrilliantButLazy: It is implied that Squidward would have genuine talent if he wasn't completely sapped of any passion. In "A Breath Of Fresh Squidward" an electric shock alters Squidward's brain and makes him as devoted and high spirited an employee as Spongebob, and actually ruins Spongebob's Employee Of The Month winning streak. Similarly Squidward often goes from a hack to a somewhat plausible musician when in a satisfactory mood.
** It's also shown that he has a decent talent in different art styles, and he could make a name for himself with these if it weren't for the fact that ''they're all of him''. Also there's his ButtMonkey and [[TheChewToy Chew Toy]] status, especially in later episodes.
** He also has unusual skills, like being a surprisingly good construction worker. In one episode he rebuilds Spongebob's ''entire house''.
* BurgerFool: You can literally see his dreams of being an artist die in his eyes in each episode.
* ButtMonkey: He almost always on the butt end of the AmusingInjuries stick.
* {{Camp}}: Into fancy towel robes, flowers, tea, painting, and playing clarinet, he's definitely got this going for him.
* CannotTellAJoke: He can tell a joke, but his monotonous deadpan tone makes it not really work.
* CantStandThemCantLiveWithoutThem: In "Squidsville", towards Spongebob.
* CartoonCreature: There's squids, there's octopi and then there's... his species. WordOfGod says he's an octopus (though with the number of tentacles a squid has), but the name "Octoward" wasn't near as good.
* CatchPhrase:
** "I can't believe I'm saying this/never thought I'd say this, but..."
** His little tune of "La da dee, la da do, la da dum" in the post-film series.
* TheChewToy: Subverted, he's widely considered to be the most sympathetic character on the show and many people just want to see him succeed once.
* TheComicallySerious: Having a rather serious person in the wonderfully wacky world of this show can be funny, though with how sociopathic the Spongebob world has become it loses its humor.
* ComicTrio: The OnlySaneMan to [=SpongeBob=]'s TheLeader and Patrick's TheFool.
* CosmicPlaything: The whole universe seems to be against Squidward, as there are several episodes dedicated to making him suffer in various ways.
* CrankyNeighbor: {{Justified|Trope}}, living next-door to a guy who won't leave you alone can drive a man to this.
* DeadpanSnarker: ''BIG TIME''.
* DependingOnTheWriter:
** He can very between being a sympathetic ChewToy to an outright {{Jerkass}}, the latter being his prominent characterization in the pre-movie seasons.
** Just how sympathetic Squidward is [[DependingOnTheWriter depends on the writer]]. In the first three seasons, he was just an intolerant grouch; for example, in the first season episode "Naughty Nautical Neighbors," he discreetly ruins Spongebob and Patrick's friendship simply because their talking via bubble-blowing annoyed him. In later seasons, he jumps between intolerant jerk and sympathetic chew toy. It's taken UpToEleven in "Sponge-Cano!", where he is openly and completely rude, hostile, and disrespectful to everyone and everything he comes in contact with and declares himself to be the most miserable person in Bikini Bottom. And in "Little Yellow Book" where he shows an extreme LackOfEmpathy towards Spongebob's feelings when reading his diary.
* DidYouJustFlipOffCthulhu: In the campfire episode, Squidward does all the things that Spongebob and Patrick told him not to do to attract a sear bear. The sea bear arrives. [[DoNotTauntCthulhu It does not end well for Squidward.]]
* DirtyCoward: When things are looking bad, he'll just run away. Though, it's hard not to sympathize with how messed up the world around him is.
* DisproportionateRetribution: In "Fools in April," he gets irritated with [=SpongeBob=] pulling April Fools pranks on people and pulls one of his own on him. Of course, [=SpongeBob's=] pranks were playful and completely harmless, like putting ''one'' ice cube in a customer's drink when said customer asked for a couple, while Squidward's prank was physically painful and just plain cruel. He [[MyGodWhatHaveIDone realizes this]] only after the damage is done.
* DoesntLikeBeingTouched: Especially when [[CuddleBug Spongebob]] does it.
* DreadfulMusician: Squidward loves his clarinet. But it doesn't seem to love him. Although in some episodes, he's decent, even actually pretty good.
* DubNameChange:
** Called "Ikardo Tentacles" in Japanese, with [[{{Woolseyism}} "ika" being the Japanese for "squid"]].
** The German dub calls him [[AlliterativeName "Thaddäus Tentakel"]]. His friends call him [[InSeriesNickname Thaddel]].
** He is called "Lula Molusco" in Brazil.
** In Spain he is called Calamardo Tentaculos.
* TheEeyore: {{Downplayed|Trope}} in earlier episodes where he still had some hope of success, but played up more in later episodes to a rather depressing degree.
* EnemyToAllLivingThings: His plants aren't that fond of him either.
* EnragedByIdiocy: With how [[TooDumbToLive stupid]] Spongebob and Patrick have become, it's fairly easy to understand.
* EvenEvilHasStandards: Although not really evil, Squidward is a notorious {{Jerkass}} who hates SpongeBob with a passion. Even so, he was absolutely disgusted when Mr. Krabs sold SpongeBob's soul to the Flying Dutchman for pocket change.
* EverythingsSquishierWithCephalopods: He's an octopus... with six tentacles.
* ExoticEyeDesigns: He has rectangular red pupils.
* {{Expy}}: WordOfGod once commented that Squidward was the "[[ComicStrip/DennisTheMenaceUS Mr. Wilson]] of the show."
* TheFinickyOne: Big time, bigger time in the later episodes.
* {{Flanderization}}:
** In many of the newer episodes, his ButtMonkey status has become flat out DisproportionateRetribution.
** He's become less grouchy and more openly hostile, sometimes even physically attacking Spongebob.
* {{Foil}}: He's just about the closest you can get to an anti-[[=Spongebob=]].
* ForgotFlandersCouldDoThat: Does occasionally get the chance to display some actual musical or other talent. He was, in fact, initially characterized by Plankton as a "''mediocre'' clarinet player," but has usually been shown as an abysmal one.
* FourTemperamentEnsemble: The Melancholic.
* FreudianExcuse: Suffered a miserable childhood and lives with neighbors who harass him everyday.
* GiftedlyBad: Subverted, he can play the clarinet, or at least it's implied, but stress and loss of passion make him terrible at it.
* GreenEyedMonster: Happens whenever someone else that has artistic talent shows up.
* GrumpyBear: Oh God, yes.
* HairTriggerTemper: Early on, Squidward would be upset by Spongebob and Patrick playing dumb games with each other. Downplayed later, then brought back again, even worse than before.
* HalfDressedCartoonAnimal: Only wears a shirt.
* HatesBeingTouched: Sadly for him, Spongebob [[CuddleBug loves cuddling.]]
* HeterosexualLifePartners: Subverted. Spongebob ''believes'' that they're this. To his credit, Squidward occasionally almost reciprocates.
* HollywoodAtheist: "Just One More Bite" implies that Squidward is either an atheist or a NayTheist, with him remarking to Spongebob that he "Has no soul" (a hellish background and laugh pops up behind him when he says that, and he notices, so make of that what you will).
* HumanPopsicle: [[spoiler: During the events of "SB-129", Squidward is locked in the freezer. He thinks someone will notice he's gone and get him out. They do not after 2,000 years, where Squidward travels back to his normal time. So technically, he's over 2,000 years old.]]
* InformedSpecies: WordOfGod is he's a octopus.
* IronButtMonkey: Thankfully, like Spongebob, he's pretty much near indestructible. Being exploded, run over, hit with doors, ''having his toenail ripped off and being gored multiple times'' he's still alive.
* ItsAllAboutMe: PlayedWith, sometimes he is a selfish jerk, and other times his [[JerkWithAHeartOfGold heart of gold]] pulls through.
* {{Jerkass}}: Just how much of a Jerkass he is varies according to the writer.
* JerkassHasAPoint: Some of his anger towards Spongebob is often understandable for obvious reasons.
* JerkWithAHeartOfGold: Sometimes sympathetic towards Spongebob.
* KarmaHoudini:
** In "Grandma's Kisses" he harasses Spongebob for simply being a devoted grandson.
** "Can You Spare a Dime?" sees him taking advantage of Spongebob's hospitality.
** In "Patty Hype", him and Mr. Krabs make fun of [=SpongeBob=] for his concept of 'pretty patties'.
** In "Gullible Pants", in which he fools [=Spongebob=] with his gullibility.
* LackOfEmpathy: Taken UpToEleven in "Little Yellow Book"
* TheLancer: To Mr. Krabs in the earlier seasons, though it didn't save him from old man Krabs' schemes to get money. Case in point, he's appointed manager of the Krusty Krab 2 in the movie, and left in charge a few times while Mr. Krabs is away or in the hospital (or in one case ''dead''). Occasionally plays Spongebob's nay-saying foil when tagging along on adventures.
* LaserGuidedKarma: Happens to him occasionally.
* LazyBum: Common theme of the Krusty Krab episodes is that Squidward often dumps his workload on Spongebob. Since the latter is easily manipulated and very much a {{workaholic}}, he takes the extra work without a second thought.
* LeanAndMean: Sometimes.
* LethalChef:
** The krabby patty he made in "The Algae is Always Greener" deserves special mention.
** And this priceless little snippet:
--> '''Customer #1:''' You call this food!? My sandwich [[TastesLikeFeet tastes like a fried boot!]]\\
'''Customer #2:''' [[UpToEleven My sandwich ]]''[[UpToEleven is ]]''[[UpToEleven a fried boot!]]
** This:
--> '''Customer #1:''' He burnt my Krabby Patty.
--> '''Customer #2:''' He burnt my fries!
--> '''Customer #3:''' [[EpicFail He burnt my shake]].
** However, he's quite good at conventional baking, such as casseroles and soufflés.
* MagmaMan: As Captain Magma in ''Mermaid Man and Barnacle Boy V''.
* {{Narcissist}}: Just about all of his artwork is self-portraits.
* NiceMeanAndInBetween: In earlier seasons, Squidward was clearly meant to be the mean one in comparison to [=SpongeBob=] and Patrick, rejecting their friendly overtures and sometimes even trying to drive them apart.
* NeverMyFault: In earlier episodes, though now it really has become not his fault.
* NonActionGuy: Never shown doing the cartoonish feats of athleticism the rest of the cast are and generally seems to be pretty unathletic.
* NoRespectGuy: One episode revolves around Spongebob thinking Squidward has died and is now haunting him. When he arranges a funeral for him, the guests have this to say:
--> '''Mr. Krabs:''' Oh, Squidward... we all came as soon as we were sure you were dead.
* NonIndicativeName: WordOfGod has it he's not a squid, but an octopus.
* NonstandardCharacterDesign: Many characters are made to look cute, or at least marketable. Squidward is less so.
* NotSoAboveItAll: If Squidward ''does'' partake in Spongebob's tomfoolery, he'll end up taking the games too seriously, ruining them for everyone else.
* OnlySaneMan: This doesn't make him any better, however.
* PerpetualFrowner: With how poorly he's treated, it's understandable.
* PetTheDog: Sometimes shows compassion for others. "Pizza Delivery" is the most obvious where [[spoiler: a fish crushes SpongeBob's spirit for no good reason and Squidward gets ticked off and shoves the pizza down the offender's throat.]] Interestingly, episodes like this downplay his ButtMonkey status considerably.
* PsychopathicManchild: While he's serious most of the time, a few episodes such as ''Fools In April'' have him acting childish, and becoming a dangerous madman in the process.
* RedBaron: As the Killer Krabby Patty in ''Spongebob, You're Fired!''
* RedEyesTakeWarning: When he gets really angry.
* RedOniBlueOni: The blue to SpongeBob's red.
* ShakingTheRump: Does this on occasions, especially when mocking Spongebob in "Club Spongebob".
* SmallNameBigEgo: Just to give you an idea -- all of Squidward's art projects are self-portraits. Believes himself to be a wonderful artist when in reality he's not, [[PlayedWith sometimes.]]
* TheSnarkKnight: Always snarky and always making comments on the screwed up world around him.
* TheSpock: Much ''much'' more so in the later episodes where he seems to be the only person with a level head.
* StepfordSnarker: Implied a lot, all he wants is to not be mistreated and get some appreciation for all the work he does, but the world around him keeps messing with him.
* StrawLoser: Let's face it, it takes one ButtMonkey to make the likes of SpongeBob and Patrick look like winners.
* SurroundedByIdiots: The only characters he doesn't have a problem with are Sandy and Pearl.
* SuperStrength: Shown in "Patty Caper", where he ''literally lifts & moves his own house''. Otherwise subverted.
* TemporarilyAVillain: While ''villain'' may be a strong word to describe him, he played this role whenever he falls into the TookALevelInJerkass territory.
* ThisLoserIsYou: Probably the most CloserToEarth character in the show, though despite his superior logic and sanity over the rest of the cast, he is often depicted as a SmallNameBigEgo who is talentless and unexceptional in reality.
* ThoseTwoGuys: With Mr. Krabs, especially in earlier seasons as they're both adults compared to Spongebob and Patrick.
* ThrowTheDogABone: Gets one roughly OnceASeason. Either something finally goes right for him, or he at least gets to laugh at karma finally hitting Spongebob.
* TookALevelInBadass: Beat the tar out of a group of greedy fast-food proprietors who were trying to use SpongeBob for slave labor while dressed in a giant Krabby Patty suit. Also functions as a {{Big Damn Hero|es}} moment.
* TookALevelInJerkass: In seasons 1-3, Squidward acts like a jerk towards Spongebob and Patrick most of the time, but at some points can be shown to actually care about them. In later seasons he takes the first possible opportunity to [[KickTheDog Kick The Sponge]]. Not that it's not {{justified|Trope}}...sometimes.
* {{Tsundere}}: This trope is very [[ZigZaggedTrope zig-zagged]] as it very much [[DependingOnTheWriter depends on the writer.]] Some writers portray him as being a JerkWithAHeartOfGold deep down and likes Spongebob, whilst other writers make him a JerkWithAHeartOfJerk who really wants Spongebob gone. [[CrowningMomentOfHeartwarming Most fans like to think the former.]]
* TheUnapologetic: He wasn't sorry for reading [=SpongeBob=]'s diary in "Little Yellow Book", [[BreakTheCutie bringing him to tears]]. But when was chained in town while the people throw tomatoes at him, he asks [=SpongeBob=] to forgive him, [[JerkWithAHeartOfJerk at least until he reads his]] ''[[JerkWithAHeartOfJerk real]]'' [[JerkWithAHeartOfJerk diary.]]
* UngratefulBastard:
** In ''Squidtastic Voyage'', when he eagerly screams at Spongebob and Patrick to get out his body without even a thank you for getting the reed out of his throat. This results in a PoorCommunicationKills in the end, when he yells "Go!", resulting in Patrick pressing the grow button.
** Also on ''Good Neighbors'', Squidward had set up a security alarm in his house as Spongebob and Patrick come in without any problem to give him an apology cake and apologize for unknowingly ruining his Sunday. But Squidward tries to get them kicked out instead of accepting their apology.
** In "Can You Spare a Dime", while initially thankful of Spongebob taking him in from homelessness, Squidward becomes an absolute spoiled brat who refuses to leave and makes Spongebob wait on him hand and foot. [[KarmaHoudini And he gets away with it in the end.]] Almost.
** The entire episode of "Sponge-Cano" revolves around him admitting that he isn't grateful for anything and complains to everyone that he is the most miserable person in Bikini Bottom. At the end of the episode, Spongebob saves Squidward from falling down the volcano, only for Squidward to tell him that he outright lied to him about being grateful.
* VagueAge: He's suggested to be older than Spongebob, though how much so seems to vary. Sometimes he appears to be around the same age while others present him as a crotchety middle-aged man.
* VoluntaryShapeshifting: Into a non-anthro octopus ("Squid's Day Off") and an amorphus liquid ("Suction Cup Symphony").

[[folder:Eugene Harold Krabs]]
->Voiced by: Creator/ClancyBrown
->Debut: ''"Help Wanted"''

A scheming skinflint crustacean and owner of the Krusty Krab. His over-the-top greed and cheapness is played for laughs.

* AbusiveParents: He often neglects Pearl, and his miserly ways cause her no small level of grief.
* AccidentalPervert: Mr. Krabs thought it was Spongebob behind the shower curtain, but it was actually Spongebob's mom. When she shrieks, he apologizes repeatedly and backs off. [[CrazyJealousGuy Spongebob's dad didn't take this well.]]
* AnnoyingLaugh: ''Arr-har-har-har!''
* AntiHero: [[DesignatedHero Well..]] as far as "anti" and "hero" goes, when fighting against a megalomaniac sea plankton he can come of as kind of heroic, sometimes...and [[VillainProtagonist at others]]
* ArchEnemy: Plankton.
* AxCrazy: Even Mr. Krabs is often a step away from this because of his extreme obsession with the money. Watch the episode "Clams". This is even more prominent after the movie.
* {{Badass}}: Not only was he in the navy, but he also fought an ''army of skeletons with a swordfish skull''! Then he [[CurbStompBattle easily defeated]] a group of destructive ghosts ''with a freaking mop''!
* BadBoss: He has become this, not caring about his employees or his customers and willing to do anything to get a buck, even poison them. He still showed shades of this in the pre-movie seasons; for example, in "Squid on Strike," he decides to start charging Spongebob and Squidward for anything and everything they do that doesn't involve working, including breathing, talking, and even ''existing.''
* BenevolentBoss: At least toward Spongebob, less so in later seasons, but Spongebob still sees him as one.
* BerserkButton: Several and almost all of them are money related.
--> '''Mr. Krabs''': "'''''FREEEEEEE FOOOOOOOOD?!?!?!?!?!?!??!'''''
--> '''Mr. Krabs''': Day... '''''OOOOOOOOOOOOFFFFFF?!?!?!?!'''''
--> '''Mr. Krabs''': '''''[[BigWhat WHAAAAAAAATTT?!?!?!?]]''''' ''YOU THINK I'M A ROBOT?!?!?''
* BigBadEnsemble: In later seasons, with Plankton. According to Stephen Hillenburg, Mr. Krabs and Plankton are both the main antagonists.
* CarnivoreConfusion: He's a crab, who sells "Crabby Patties"--which, if we can presume it's what it sounds like, are patties made of crab.
* ClutchingHandTrap: In "Squid's Day Off," he falls prey to one when he tries to retrieve a dime from the sink... and gets his hand stuck. When [=SpongeBob=] tells him that he just has to let go of the dime to get loose:
-->'''Mr. Krabs''': I can think of ten good reasons to ''never'' let go of a dime, boy.
* ComedicSociopath: After the movie.
* CorruptCorporateExecutive: He was originally an HonestCorporateExecutive with some greedy tendencies, but he was progressively Flanderized into this - ''especially'' in the post-movie seasons.
* DadTheVeteran: He was in the Navy as a youth, and is now a father to the teenage Pearl.
* DependingOnTheWriter:
** He can either be a sympathetic guy who has a genuine good core, a {{Jerkass}} who abuses his employees and doesn't care about his daughter that's PlayedForLaughs, or a ruthless SmugSnake who commits extremely dark and serious KickTheDog acts such as relentlessly torturing Plankton that isn't meant to be funny.
** His obsession with money also varies between episodes.
* DubNameChange: In French, he's ''Capitaine'' (Captain) Krabs.
* EasilyForgiven: No matter how badly he treats [=SpongeBob=] or how heinous his actions may be, he will ''always'' be back in [=SpongeBob's=] good graces by the end of the episode. A particularly noticeable example is in "The Cent of Money," in which he uses (and abuses) Gary to steal money and loose change from all of Bikini Bottom, completely uncaring that attracting money causes Gary great discomfort.
* EvenBadMenLoveTheirMamas: He's very caring of his mother, though with the fact that his mother hardly shows up anymore it's hard to tell.
* EvenEvilHasStandards: As recently as "''The Masterpiece''" he did have far more limits and nobilities in his greed ([[MyGodWhatHaveIDone or at least felt really bad when he overstepped them, like selling Spongebob's soul in the spur of the moment and poisoning people at the Krusty Sponge]]). Prior to his own development, Plankton often represented boundaries and methods in money making that Krabs drew the line at. In the episode "Little Yellow Book," Mr. Krabs is among the many that are utterly disgusted with Squidward for stealing [=SpongeBob's=] diary and reading it to everyone, explicitly telling Squidward, "That's low, even for you."
* EvilIsHammy: Krabs can be hammy when it comes to money and has his evil moments.
* EvilIsPetty: In the episode "Plankton's Regular," he refuses to let Plankton have even one single legitimate customer out of sheer ego.
* EvilVersusEvil: Him versus Plankton, post-movie seasons. Often, he's actually even ''worse'' than Plankton himself.
* EvilerThanThou: At times, Plankton himself is shocked and disgusted by the lengths Mr. Krabs is willing to go and what lines he is willing to cross to make a buck.
* FauxAffablyEvil: Under a more negative light post-{{Flanderization}}, under a more positive one he falls into more KnightTemplar tendencies. Generally how cruel Krabs acts tends to be a case of RuleOfFunny or DependingOnTheWriter, even in later episodes.
* FourTemperamentEnsemble: The Choleric (shares this with Sandy).
* FreudianExcuse: One could easily argue that his greed stems from his bad memories of living in poverty until striking it big; as a kid, his clothing came out of the ''trash''.
* {{Greed}}: His ''entire life'' revolves around money, to the point where he has physical difficulty just giving up a penny. Heck, he's greedy enough to put [[WesternAnimation/EdEddNEddy Eddy,]] [[WesternAnimation/TheSimpsons Mr. Burns,]] and [[Franchise/SuperMarioBros Wario]] to shame.
* HairTriggerTemper: When it comes to money. Seriously you can ''hurt and kill'' his employees and he won't care, but so much as touch his money and he will flip the entire world around trying to hurt you.
* IFightForTheStrongestSide: In "Neptune's Spatula", he gives a little pep talk to Spongebob... before betting his money on King Neptune.
* ItAmusedMe: In "Wet Painters," Mr. Krabs convinces Spongebob and Patrick to paint the inside of his house, but states that the paint in question is permanent and if they get even a single drop on ''anything'' but the walls, he will chop their butts off and mount them over the fireplace. They accidentally get it on his first dollar, and Mr. Krabs simply licks the paint off and reveals that the paint is actually saliva-soluable. When he tells them that he told them as such just to mess with them, Sponge and Pat are ''not'' happy and immediately leave in disgust.
* ItsAllAboutMe: Arguably the most selfish character on the show.
* {{Jerkass}}: Occasionally in early seasons, more often in later seasons.
* JerkWithAHeartOfGold: Mr. Krabs ''was'' initially a quirky but rather fair natured boss character. [[WeaksauceWeakness He just liked money a bit too much]]. His greed was often played for laughs, and he had redeeming qualities, such as genuine care for his daughter Pearl, and for Spongebob. Now at times he's just a total jerk to anything without a currency value. There's still some episodes that show him as a good guy though.
* KarmaHoudini:
** In post-movie seasons, he is essentially the living, breathing incarnate of this trope, considering that he somehow gets away scot-free with anything he does nowadays (ranging from theft to poisoning his customers to even ''driving people to suicide''), sometimes leaving someone to take the blame/pay the price. There are even times near the end of some episodes when it looks like Krabs is about to receive his comeuppance (or in rare cases, actually does), but something happens at the end that puts the situation in Krabs's favor, if not lets him escape punishment entirely.
** However, he still doesn't get away with ''everything''. For example, at the end of "The Patty Caper," just as his plan to frame Spongebob for the theft of the Krabby Patty secret ingredient is about to succeed, he [[AccidentalPublicConfession reveals the ingredient in his hand and confesses to stealing it himself]], and is forced by the judge to give out free Krabby Patties for a whole day, while strapped to the chair and being ForcedToWatch by the cops. Might not seem like an actual punishment, but when you're as greedy and miserly as Mr. Krabs...
** What sat horribly bad with many former fans of the show was Mr. Krabs' treatment of Plankton in "One Coarse Meal". It has been labeled by many as the most disgusting and loathsome episode ever on the show. To elaborate, Mr. Krabs torments Plankton psychologically by dressing up as Pearl (since whales eat plankton) to such a degree that he is DrivenToSuicide. And Mr. Krabs just laughs [[LackOfEmpathy it off]]. Spongebob later on realizes this is going too far and tells Plankton the truth, but in the end he protects Mr. Krabs and he never gets his comeuppance or shows even a grain of remorse for his deeds. This episode made Mr. Krabs be seen as a heinous DesignatedHero and Plankton a JerkassWoobie by many fans.
* KnightTemplar: His occasional treatment of Plankton leans towards this. Early on he was merely defending his business from his schemes, now he seems to take offense even when his rival is making legitimate profits or merely isn't miserable.
* LackOfEmpathy: UpToEleven in later seasons.
* LargeHam: When it comes to anything involving money.
* LastNameBasis: Almost everyone calls him Mr. Krabs, rarely using his first name.
* LaserGuidedKarma: In earlier seasons, and again in most recent ones such as "The Scent Of Money".
* LethalChef: He's a terrible cook, creating a disgusting and freakish "appetizer", which eventually comes to life and begins attacking the restaurant's patrons.
* MadeOfIron: His shell is nearly impossible to scratch. It makes sense because he is a crab.
* MeanBoss: On his bad days.
* MoneyFetish: His defining character trait. He frequently [[ExaggeratedTrope to ridiculous levels]], to the point of taking money-baths, getting into a fight with Squidward over a dime, stalking Spongebob for a penny, and almost losing Spongebob forever in exchange for some pocket change (sixty-two cents to be exact).
* MrViceGuy: When the show started out, he was a decent guy, but a bit greedy.
* NeverMyFault: Whenever his schemes go wrong, he usually frames someone else, for example, he blames Spongebob for "killing" the health inspector with their "Nasty Patty" even though he himself made the idea in the first place.
* OnlyInItForTheMoney: He does everything he can to make more money.
* PointyHairedBoss: He's either this or MeanBoss, DependingOnTheWriter.
* RedBaron: Was known as [[AwesomeMcCoolname The Golden Claw]] back in his Navy days.
* RetiredBadass: Was an extremely tough Navycrab in his younger days, as shown in several episodes.
* RidiculouslyCuteCritter: As a baby.
* {{Sadist}}: Post Movie. Especially when it comes to Plankton, perfect examples of this are in "Plankton's Regular" and "One Coarse Meal".
* SeriousBusiness: He will put other people's lives in danger, even ''his own'', just to make a quick buck.
* TheScrooge: He is very cheap and reluctant to spend money, so much that he makes Scrooge McDuck look like an angel.
* TheSociopath: Even more than Plankton, after the movie. He is quite often immoral and insensitive when it comes to crossing the Moral Event Horizon, or whenever he wants to make easy money (which is pretty much all the time).
* SuperStrength: at times, he has been shown to move the ''Krusty Krab establishment'' without much effort!
* TeamDad: He serves as one to [=SpongeBob=] and Patrick when it comes to keeping them on the right track from time to time, examples include "Hooky" and "Sailor Mouth".
* TinyGuyHugeGirl: He's a crab and his daughter is a whale. If supplemental materials are to be believed, he was also this with his wife.
* TokenEvilTeammate: In later seasons.
* TookALevelInDumbass: He can completely lose rational thought in the face of money.
* TookALevelInJerkass: After the movie.
* UnscrupulousHero: When against Plankton.
* VillainProtagonist: Post-Movie. Though it still [[DependingOnTheWriter depends]].
* WeUsedToBeFriends: With Plankton. It was the Krabby Patty Formula that caused them to become {{Arch Enem|y}}ies with each other.

[[folder:Sandy Cheeks]]
->Voiced by: Carolyn Lawrence
->Debut: ''"Tea at the Treedome"''

An athlete/scientist squirrel from Texas.

* TheAce: Particularity as her appearances get less frequent.
* ActionGirl: Much more so in earlier episodes, though it still shows through every now and then.
* {{Adorkable}}: Like her friend Spongebob, she's cute and eccentric. Not to mention extremely nerdy, which causes Spongebob and Patrick to often scratch their heads in confusion whenever she talks Science.
* {{Badass}}: Easily one of the coolest...
* BadassAdorable: and cutest characters in the show.
* BadassBookworm: Easily the most intelligent in the main cast, but often shown to be as physically strong as [[TheBigGuy Larry the Lobster]]. Also likes life-threatening stunts.
* BerserkButton: Never ever insult anything/anyone from Texas, or even the state itself. You will regret it, as Spongebob and Patrick faced the serious consequences.
* BrokenAce: Light case in some episodes, due to her very competitive attitude. She takes the idea of [[ATasteOfDefeat not being the best at something]] rather badly.
* CloserToEarth: Flip flops with this. While she is far more intelligent than most of the cast, she is occasionally shown to have a very rowdy and abrasive temperment when pushed. She is also sometimes more aware of her position in this trope [[SmallNameBigEgo than she really is]]. Granted as the rest of the cast became Flanderized more and more, her own flaws became less significant.
* CompetitionFreak: Sandy is used to being the best at multiple talents and sports, so gets rather aggressive with when challenged.
* CuteBruiser: She is clearly Bikini Bottom's strongest resident, occassionally challenging massive, heavily muscled fish and Larry the Lobster to weightlifting challenges.
* DemotedToExtra: Inverted: She and Gary are more common in merchandise than the show.
* EnragedByIdiocy: Quite expresses her annoyance towards Patrick's stupidity on occasions.
* EverythingIsBigInTexas
* FishOutOfWater: Played straight, though she's [[CaptainObvious actually a squirrel IN water]].
* {{Flanderization}}: Originally portrayed as TheAce in various activities, post-movie episodes have increasingly focused on her being a scientist, pretty much shunning anything else she was passionate about.
* FlatCharacter: Became this in the post movie seasons.
* FourTemperamentEnsemble: The Choleric (shares this with Mr. Krabs).
* GadgeteerGenius: She built tons of nifty gadgets.
* GeniusBruiser: She's smart and tough.
* GenkiGirl: She can be this when she wants to have a good time.
* HairTriggerTemper: Usually level headed, but being a HotBlooded Texan, she is rarely subtle when her temper flares.
* InsufferableGenius: Sometimes, especially in later seasons.
* {{Invisibility}}: As Miss Appear in ''Mermaid Man and Barnacle Boy V''.
* TheLadette: By many fan [[AlternateCharacterInterpretation interpretations]].
* MasculineGirlFeminineBoy: Masculine Girl to SpongeBob's Feminine Boy.
* NobleBigot: In "Pressure," she repeatedly bragged that land creatures are better than sea creatures, with Spongebob, Patrick, Squidward, and Mr. Krabs thinking the opposite. However, after their attempts at proving it put both sides in mortal danger, they grow out of it.
* NotSoAboveItAll: Though, sometimes her sciencey-mind can make her do some things that push her into MadScientist territory.
* OnlySaneWoman: Not as much as Squidward, but she's still fairly level-headed. This is the reason why Squidward has no problem with her.
* OutOfFocus: Appears less and less with each season, it seems.
* ParodySue: A few episodes, especially in the 2nd season, seem to [[LampshadeHanging make light of]] her [[GodModeSue somewhat lengthy amount of talents]] and [[CanonSue positive aspects]], it also usually being these points she was portrayed in a more flawed light. May count as an example of RescuedFromTheScrappyHeap with those elements considered.
* PassionateSportsGirl: To a particularly extreme level. Adding to that her occasional CompetitionFreak bouts, working out with Sandy can border out and out life threatening.
* PositiveDiscrimination: Arguable example. Is the most gifted and least flawed central character by miles, though partly due to excessive {{Flanderization}} of the bipedal, male characters. Admittedly it is also balanced by frequent NotSoAboveItAll moments. She played it undeniably straight pre-CharacterDevelopment however.
* ShipTease: Usually with SpongeBob, shown by how well they interact with one another, and some reactions to each others comments. One {{Flashback}} from "Truth or Square" even had them seemingly getting married, only for it to be revealed as a play after an AlmostKiss.
* SlapstickKnowsNoGender: Not as much as the others but Sandy suffers some physical damage at times, such as being mauled by a gorilla, having her fur torn off by Spongebob and Patrick, being plagued with fleas, being hit by a car off of a mountain and so on.
* SmallNameBigEgo: Albeit [[DependingOnTheWriter not as consistently]] as Squidward. Here are some examples:
** In "Pressure," she repeatedly stated that land creatures are better than sea creatures and went so far as to almost drown herself in an attempt to prove it.
** Then there's "Sandy, [=SpongeBob=], and the Worm," where she was firmly convinced that, being "Texas tough," she could easily handle the Alaskan Bullworm, repeatedly dismissing and even mocking [=SpongeBob=]'s warnings. When she finally reaches it and finds out that the Alaskan Bullworm is indeed as big and dangerous as everyone said, she runs in fear, and ''only'' admits she was wrong after [=SpongeBob=] nagged her into doing so.
* TheSmurfettePrinciple: Sandy is the only female who can be considered a main character, and [[OutOfFocus her appearances are becoming less frequent]].
* SouthernFriedGenius: She's from Texas, and proud of it!
* SuperStrength: Pretty obvious, actually. Especially when you saw her ''pull a boat underwater by the chain'' in "The Worm".
* TertiarySexualCharacteristics: She wears a flower on her diving helmet so it's more readily apparent she's a girl. She's got eyelashes too, but so does Spongebob.
* TokenGoodTeammate: The only main character that isn't either a {{Jerkass}} or a moron. She and Pearl are the only characters Squidward gets along with very well for this reason. Her occasional [[SmallNameBigEgo ego]] and [[BerserkButton temperament]] can provoke some unfortunate situations in the show (eg. "Pressure"), that said, she is arguably the one recurring character that hasn't had her flaws [[{{Flanderization}} Flanderized]] over her redeeming aspects.
* TooCleverByHalf: Every now and then she goes into this.
* TrademarkFavoriteFood: Nuts and anything nut-related.
* WalkingSwimsuitScene: Occasionally, but always when she's in her tree house.
* WomenAreWiser: Usually played straight to a tee, though she has occasional lapses in judgement Spongebob plays TheStraightMan towards, especially in early seasons.

[[folder:Sheldon J. Plankton]]
->Voiced by: Doug Lawrence
->Debut: ''"Plankton!"''

Krabs' business rival and arch-enemy. Is always after the formula for the Krabby Patty, the burger that SpongeBob fries up to the customers. Barring that, he ultimately aims for crushing all of Bikini Bottom beneath his feet.

* AffablyEvil: He is no less pleasant than his rival can be anyway.
* ArchEnemy: To Krabs, and sometimes SpongeBob.
* BadBoss: While Karen dishes as much abuse as she takes, Plankton is frequently dismissive and insulting to her and isn't against using her as patsy or guinea pig for his experiments.
* BigBad: The primary antagonist of both the series and TheMovie.
** BigBadWannabe: Usually, however, he's too incompetent to pull off a successful EvilPlan.
* BodySnatcher -- A few of his plans involve mentally or physically enslaving someone with or without them being aware of the situation.
* BreakoutCharacter/ BreakoutVillain: He only occasionally appeared early on, generally when episodes needed an actual "villain" character, but he has continued to appear more and more frequently as time has gone on, to the point of being in many more episodes than either Sandy or Gary.
* ButtMonkey: Just how many times has he been stepped on and thrown?
** IronButtMonkey: A-lot, but he usually walks out of it okay. Deconstructed though, as while he '''can''' take a lot, it's strongly hinted that he became so resilient because he '''HAD''' to due his status as a plankton. It's also made clear that, resilient or not, it still bothers him on some level.
* CantGetAwayWithNuthin: Not just with his evil plans. A rather discomforting example would be "One Coarse Meal", where Plankton is punished for trying to exact justifiable revenge on Mr. Krabs, who in turn got off scot-free after tormenting Plankton for several days.
** However, Plankton does ''partially'' get away in "Someone's in the Kitchen with Sandy". After yet another failed attempt to steal a Krabby Patty, he is locked in a jar of spicy mustard. Then the police show up and - instead of arresting Plankton for stealing Sandy's pelt - they arrest SANDY for public nudity.
* CardCarryingVillain: He likes to talk about how evil he is.
* CatchPhrase -- ''"I went to college!"''
** "Ouch."
* TheChessmaster: In the movie.
* CorruptCorporateExecutive: Although the Chum Bucket could hardly be considered a corporation...
* CrouchingMoronHiddenBadass: In the movie.
* CutLexLuthorACheck: TropeCodifier. He's a scientific genius, and could ''easily'' get a career in technology if he wasn't so obsessed with running the Krusty Krab out of business.
* {{Cyclops}}: {{Justified|Trope}}, he's a plankton and many plankton are cyclops.
* DeadpanSnarker: Though not nearly as profound an example, he can dish it back to Karen at times.
* DependingOnTheWriter: How evil he is tends to vary from episode to episode. He's always a villainous character, but his antics are frequently overshadowed by [[TookALevelInJerkass Mr. Krabs]] later on.
* {{Determinator}}: Much much more so in earlier episodes, but there are some later episodes in which he's given up.
* DitzyGenius: He may be a scientist and have all sorts of gadgets, but is incompetent overall. For example, he believes that baby powder is made from actual babies in "Goo Goo Gas," and in "Komputer Overload," he has to be reminded to blink.
* TheDogBitesBack: In "One Coarse Meal", when he nearly kills himself after being frightened by Mr. Krabs in disguise as Pearl from his fear of whales for 17 straight days, he finds out about Mr. Krabs's fear of mimes and starts scaring him with that. It doesn't last long, though.
* DrivenToSuicide: Almost happened in "One Coarse Meal."
* EmbarrassingFirstName: Karen had a ''really'' good time with this one.
* EvenBadMenLoveTheirMamas: Actually his grandmama.
* EvenEvilHasStandards:
** In "The Krabby Kronicle," he doesn't invade people's privacy for a newspaper gossip and shows disgust at Krabs' greed. Quoted by him "And I thought '''I''' was evil!"
** In "Squirrel Records," Sandy comes to him asking for raw chum in order to break a world record. Plankton is actually reluctant to give it to her despite freely admitting to being an "evil, heartless mastermind," because, as he puts it, "no one can eat raw chum and survive!"
* EvilCannotComprehendGood: In "Walking Small", he's driven to a VillainousBreakdown after SpongeBob resolves to be "aggressively nice".
-->'''Plankton:''' [[TroubledFetalPosition Too... much... love...]] [[ThePowerofHate need... hatred...]]
* EvilCounterpart: To Mr. Krabs, at least in earlier seasons.
* EvilFeelsGood: As quoted in "F.U.N.":
-->'''Plankton:''' Being evil is too much fun!
* EvilFormerFriend: Towards Mr. Krabs.
* EvilGenius[=/=]EvilIsHammy[=/=]EvilLaugh: He's smart, hammy as hell, and laughs evilly quite a lot.
* EvilSoundsDeep: Downplayed later on the show.
* FailureIsTheOnlyOption: With an exception in 'Wishing You Well'.
* FriendlyEnemy: Spongebob on many occasions tries to befriend or show pity on Plankton, with varying success.
* GladIThoughtOfIt: He's guilty of this, especially when he takes an idea Karen says to him.
* HairTriggerTemper: Much more so in earlier episodes, he's calmed down a tad in later episodes.
* HarmlessVillain[=/=]NotSoHarmlessVillain: Played with, his only interest is stealing Krabs' secret formula. However depending on his overzeal, he is willing to brainwash, potentially murder and generally cause a lot of collateral damage in his attempts to do so. In other episodes that aired after the movie, he even settles for just [[VillainyFreeVillain competing with Krabs legitimately]]. When he falls into his Analyzer in his debut episode, it describes him as being made of "1% evil, 99% hot gas."
* HenpeckedHusband: Has shades of this around Karen.
* ImAHumanitarian: in Krabby Kronickles, as ode to SoylentGreen
* ImpossibleThief: In one episode, Mr. Krabs tempts a "reformed" Plankton with a krabby patty. Despite the fact that the patty is always visible and untouched on the table throughout the exchange, it somehow ends up replaced with a cardboard cutout, ''[[BehindTheBlack which Krabs should have seen from his angle, even when it was propped up.]]''
* IneffectualSympatheticVillain: In later seasons, but it varies, as sometimes he manages to be the clear cut villain. DependingOnTheWriter.
* {{Jerkass}}: When he's the main villain, he'll be as mean as he is evil.
* JerkWithAHeartOfJerk: In the first season episode "FUN".
* KnightOfCerebus: In TheMovie, He's actually played [[NotSoHarmless seriously]].
* LargeHam: Despite his small size.
* LastNameBasis: Though in his case, he considers Sheldon an EmbarrassingFirstName. Unlike Mr. Krabs, he's simply called Plankton instead of Mr. Plankton (sans one episode where he sees what it's like if they switch places).
* LaughablyEvil: He's an EvilGenius who chews up the scenery.
* {{Leitmotif}}: InUniverse. He carries his gramophone to play one, but only in his first appearance. It sometimes plays without the need of a gramophone.
* LethalChef: The reason why he doesn't have customers.
* LikesOlderWomen: He is attracted to Mr. Krabs's mother in one episode.
* MadScientist: Emphasis on mad.
* TheNapoleon -- Being constantly stepped on and flung around like a piece of trash will mess with a plankton's mind, man.
* NearVillainVictory: "[=SpongeBob=]'s Last Stand" is the closest Plankton has ever gotten in the cartoon series, with Mr. Krabs completely willing to hand over the secret formula. In one episode, he already figured out every ingredient in a Krabby, save for one, which was the {{Macguffin}} of that episode. This also goes for any scheme that DOESN'T involve stealing the secret formula.
* NiceGuysFinishLast: Says this word-for-word in "Walking Small".
* NoCelebritiesWereHarmed: Voice actor Doug Lawrence modeled his voice off of ThurlRavenscroft.
* NotMeThisTime: In "The Patty Caper," he's naturally the first suspect when [=SpongeBob=] and Patrick try to find out who stole the key ingredient to the Krabby Patty formula. However, for once, it ''wasn't'' him.
* TheNoseless: {{Justified|Trope}}, planktons don't have noses
* OmnicidalManiac: he vows to be one in the end of TheSpongebobSquarepantsMovie.
* PetTheDog: The episode ''Plankton's Pet''. He's genuinely nice to his pet amoeba Spot, feels guilty about having to punish him, and willingly works with Spongebob to find him.
* ThePiratesWhoDontDoAnything: He's ostensibly a chef/restauranteur, but it's easy to forget this when his status as a CardCarryingVillain dominates his characterization, and when the Chum Bucket resembles a SupervillainLair more than it resembles an actual eatery. He seems to spend more time plotting Mr. Krabs' downfall (and occasionally trying to TakeOverTheWorld) than, y'know...cooking food and trying to attract customers.
* [[RedEyesTakeWarning Red Eye Take Warning]]: {{Subverted|Trope}}, he's pretty harmless.
* TheRival: To Mr. Krabs.
* SeldomSeenSpecies: He's undoubtedly the most popular (and only) plankton in fiction.
* SesquipedalianLoquaciousness: Often uses strong vocabulary.
* SmugSnake: Sometimes.
* SpeciesSurname: His full name is Sheldon J. Plankton, and he's a plankton.
* SuperStrength: Shown in "Bucket Sweet Bucket", [[spoiler:where he crushes a nut with his teeth & punches the door off of a safe... from the inside,]] but normally subverted.
* TakeOverTheWorld: His secondary goal, DependingOnTheWriter.
* ThrowTheDogABone: Gets a legitimately happy ending in both ''Plankton's Pet'' and ''Wishing You Well''.
* TookALevelInBadass: After stint of VillainDecay Plankton returned to his threatening and menacing self by Season 7 and became a much more competent villain. Particulary in episodes "Frozen Face-Off", "Spongebob's Last Stand" and "One Coarse Meal'. In "Frozen Face-Off" he [[spoiler: [[KansasCityShuffle organized a race as a distraction just so he could steal the Krabby Patty formula without trouble]] and to throw off the suspicion he placed his [[ActuallyADoombot robot doppelganger to participate in the race]] and it took all the main characters to stop his EvilPlan]]. In "Spongebob's Last Stand" where he built a super highway, which directly led to Chum Bucket, and it drove away all jellyfish from their fields and took over town and almost all of Bikini Bottom's population supported him until the jellyfish attacked them in revenge for their home's destruction. It was so bad that Mr. Krabs was going to give him the secret formula ''willingly''. This and "Frozen Face-Off" are more dramatic and action packed episodes of the series. Even in "One Coarse Meal', where he was DrivenToSuicide due to Krabs masquerading as Pearl and scaring him, Plankton was very effective villain. He drops a powerful explosive the size of a TV remote on the Krusty Krab's roof; he is said to build a transmutator (a machine with the power to make an element in nature into another element, like iron into gold, fire into air, etc.); and a robotic bomb-shaped object that is actually a disguised, robotic, telescopic claw that can crush a sea creature. And at the end of the episode, Plankton uses [[spoiler:mimes to scare Mr. Krabs, who is very afraid of mimes, as the revenge for Mr. Krabs scaring him and driving him to suicide and from looks of it, Mr. Krabs' fear of mimes is bigger than Plankton's fear of whales, since Plankton managed to remain rational while being scared by whales, while Mr. Krabs was completely irrational]].
* TookALevelInDumbass: [[DependingOnTheWriter Sometimes]]. He varies from being on Sandy's level in terms of intelligence to being barely smarter than other characters.
* TragicVillain: For some, he could be seen like this. It is known that as a child, he was bullied and his only friend was Mr. Krabs. Now he is evil and despises the society, not only because of this, also for a dispute with Mr. Krabs for poisoning the old man Jenkins.
* UnknownRival: Sometimes SpongeBob doesn't acknowledge him as an enemy.
* VillainousBreakdown: He has one in ''TheSpongeBobSquarePantsMovie''. After his helmets have been proven to be defeated by the PowerOfRock, he tried to desperately beg his computer wife Karen to do something about SpongeBob. However, she was being carried off by the crowd and was too far away to hear her husband. As one final act of desperation to keep his control over the townspeople, he tried to command the brainwashed King Neptune to kill SpongeBob. Unfortunately for him, the helmet on Neptune's head was also destroyed, and he was freed from his mind control. Plankton then tried to escape through the front doors, only to be paved down by the freed Bikini Bottomites. [[LaserGuidedKarma He's later arrested]], and he threatens to murder everyone once he gets out of prison.
* VillainEpisode: "The Algae's Always Greener" and "Plankton's Army" are a couple of good examples for him.
* VillainProtagonist: Only in '''some''' episodes, showing his attempts to steal the Krabby Patty formula.
* VocalDissonance: He has quite a deep, booming voice, in contrast to his miniscule size.
* VocalEvolution: Starting in the movie, he would develop a high-pitched scream.
* YourCheatingHeart: As soon as he gets attracted to [[LikesOlderWomen Mr. Krabs' mom]], he shuts Karen down and goes after her. However, this could be debated since Karen is not a real organic being, just a computer.
* ZeroPercentApprovalRating: Has been referred to as the "most hated thing/creature in Bikini Bottom" on more than one occasion.

->Voiced by: Jill Talley
->Debut: ''"Plankton!"''

Plankton's business computer and robotic spouse. Being blessed with a complex sentient programming, Karen is well aware of her "husband's" stupidity and is [[DeadpanSnarker very verbal about it as well]].

* AIIsACrapshoot: Seems more competent and intelligent than Plankton, but also has the personality of a nagging housewife, and thus is usually more preoccupied in nagging at her husband's failures or whining for affection.
* BeleagueredAssistant: She mostly averts this as she is generally the dominant one in the relationship.
* CharacterDevelopment: Was originally a generic computer in her debut in "Plankton". Was granted a sentience in later episodes.
* DeadpanSnarker: Of the tallest order.
* {{Flanderization}}: Her DeadpanSnarker mannerisms. Initially merely acted frustrated and sarcastic on odd occasions due to Plankton's bumbling. Now she is perpetually throwing insults at her spouse.
* GreenEyes: Whenever she has them, otherwise {{Subverted|Trope}}.
* HyperCompetentSideKick: She successfully stole a Krabby Patty first time she tried alone with near zero effort (then again, it was against Squidward).
* JustAStupidAccent: Had an obnoxious Boston accent even [[CharacterizationMarchesOn before she had a personality]].
* LackOfEmpathy: Well, she's a computer...
* PetTheDog: Perpetually snarky and nagging towards her husband, and is suggested to [[ActuallyPrettyFunny even find some of his suffering amusing]], nevertheless she does love him, deep, ''deep'' down.
* RoboticSpouse: Yes and no. Yes, Karen is a robot (okay, she's technically an extremely sarcastic computer...). Yes, she is married to her creator. No, however, Plankton did ''not'' create her just to marry her. She was originally just the security system for the business he and Mr. Krabs ran together, before they began dating naturally.
* SatelliteCharacter: She has no interaction with anybody other than Plankton. [[JustifiedTrope Justified]], seeing as how she's a mostly immobile computer...
* SnarkyInanimateObject: She's a robot, and damn if she ever isn't snarky.
* {{Tuckerization}}: Named after Stephen Hillenburg's wife.

->Voiced by: TomKenny
->Debut: ''"Help Wanted"''

SpongeBob's pet snail, who meows like a cat.

* AmplifiedAnimalAptitude: Varies. Sometimes he acts like any other domestic animal, other times he can use RaymanianLimbs and understand SpongeBob well enough to hold conversations.
* ButtMonkey: He's abused mercilessly in a few episodes of the later seasons like "A Pal For Gary", "The Cent of Money" and "Pet Sitter Pat."
* CatsAreMean: Under the show's theory of snails existing as an Expy for cats. Subverted for the most part, though he has his occasional Jerkass moments like most of the cast (''Dumped'' shows he can be a rather fickle bastard).
* FourTemperamentEnsemble: The Leukine.
* FurryConfusion: Averted.
* HatesBaths: As seen in "Gary Takes a Bath" and "Pet Sitter Pat".
* HypercompetentSidekick: He often seems smarter than his owner.
* IntellectualAnimal: In the episode "Sleepy Time", he is revealed to be quite intelligent through his dream self.
* IntelligibleUnintelligible:[=SpongeBob=], Sandy, and Squidward can understand Gary.
** And Mr. Krabs:
-->'''Mr. Krabs:''' [=SpongeBob=], what's wrong with you?
-->'''Gary:''' Meow!
-->'''Mr. Krabs:''' The Suds?!
* LukeIAmYourFather: or [[spoiler: Patrick, I'm Your Cousin]] more like.
* OddNameOut: The only one of the main characters whose full name has nothing to do with his species.
* [[OnlySaneMan Only Sane Snail]]: Despite being a pet, Gary fills this role the vast majority of the time.
* OutOfFocus: more of a background character nowadays. Unlike Sandy, he is sticking to this.
* RidiculouslyCuteCritter: He's a cute little snail.
* RedEyesTakeWarning: Subverted.
* SilentSnarker: See below.
* SnarkyNonHumanSidekick: Despite all of them [[CaptainObvious being sea creatures and all]] (except Mermaid Man and Barnacle Boy). Even if the [[TheUnintelligible audience will never be able to figure out what he's saying,]] SpongeBob's retorts to whatever he says show that he is rather snarky.
* TokenGoodTeammate: One of the few characters who is not a Jerkass, an antagonist, or a moron (although he can be fickle at times).
* UndyingLoyalty: If his rescuing [=SpongeBob=] from Puffy Fluffy after the sponge treated him like crap doesn't qualify for this trope, ''nothing'' does.

!Recurring Characters
[[folder:Mrs. Poppy Puff]]
->Voiced by: Mary Jo Catlett
->Debut: ''"Boating School"''

Neurotic boating school teacher, driven (almost literally) to wit's end by Spongebob's constant disasterous attempts to gain a boating license.

* AdultsAreUseless: Sort of. She's far more level headed than Spongebob, but she shows occasional incompetance as a teacher.
* AlliterativeName: '''P'''oppy '''P'''uff.
* AxCrazy: In "Demolition Doofus" when she becomes obsessed with attempting to get Spongebob killed in a demolition match, and tries to kill him herself when that fails.
* ButtMonkey: As a result of Spongebob's antics.
* CloserToEarth: Despite the occasional dark tint, she's one of the more level headed characters. Spongebob is constantly grating on her sanity however.
* DarkAndTroubledPast: According to at least one [[TalkingToThemself monologue]], she has previously skipped town under a different name.
** Also, her husband was apparently [[spoiler: fished up out of the sea and made into a lamp.]]
* DeterminedWidow: Amazingly, she hasn't given up on Spongebob.
* DidntThinkThisThrough: She falls victim to this in the episode "No Free Rides." Sick and tired of having to go through [=SpongeBob's=] [[DrivesLikeCrazy chaotic driving tests]], she comes up with a bogus extra credit test to just give him his driver's license and get him out of her classroom. It's only after she does so that it hits her that she has just given [=SpongeBob=] free reign to drive on public streets and wreak havoc there.
* KnightOfCerebus: She briefly becomes one in the Season 8 episode ''Demolition Doofus''. She entered [=SpongeBob=] into a demolition derby and hoped that he would die in it since he was the one who caused her to puncture her inflation sac thanks to his crazy driving. She later tries to kill him herself by entering into the demolition derby using a massive monster truck. This episode is considered her darkest role by many fans.
* NervousWreck: She's very neurotic, although it's usually justified.
* NoAccountingForTaste: Once dated Mr. Krabs.
** Granted, this was back in the second season where he was still a decent guy and before he became more of a Jerkass.
* NotSoDifferent: From Squidward. In ''Boating Buddies'', she and Squidward agree that Spongebob is the bane of their existance.
* OutOfCharacterMoment: In the infamous ''Demolition Doofus'', she is driven insane after one of SpongeBob's accidents causes her to deflate. She actually tries to get SpongeBob killed in a demolition derby. Thankfully, she was turned back to normal at the end.
* OutOfFocus: Post movie.
* RunningGag: How many times has she gotten arrested now?
* SanitySlippage: Happens to her when it involves Spongebob.
* StepfordSmiler: Implied.
* TemporarilyAVillain: In ''No Free Rides'' and ''Demolition Doofus''.

->Voiced by: Doug Lawrence
->Debut: ''"Ripped Pants"''

* AmazingTechnicolorWildlife: Has the color of a boiled lobster. Justified by that he tans a lot.
* TheBigGuy: He's a lifeguard with a muscular physique.
* ChickMagnet: He's popular and gets all the girls.
* DemotedToExtra: Post movie.
* LovableJock: Easily the physically strongest character and one of the friendliest after Spongebob himself.
* OnlyOneName: Only known as Larry the Lobster.
* CharlesAtlasSuperpower: His training practically made him strong enough to ''[[SuperStrength lift 2 bleachers full of audience members]]''.
* WalkingShirtlessScene: Always seen this way.

[[folder:Mermaid Man]]
->Voiced by: Creator/ErnestBorgnine
->Debut: ''"Mermaid Man and Barnacle Boy"''

Spongebob and Patrick's favorite Superhero, who is now elderly and lives in a retirement home.

* CloudCuckoolander: May be semi-justified as onset Alzheimer's / Dementia.
* {{Expy}}: Of Aquaman, and a deconstruction at the same time. His younger self also looks like Aquaman, and both have the ability to summon the creatures of the sea via telepathy.
** He's also clearly modeled off of Batman.
* FakeUltimateHero: Of sorts. His and BarnacleBoy's heroism after becoming semi-retired is only [[InformedAbility informed]]. When they appear in an episode, it's usually SpongeBob and Patrick who end up saving the day.
* InkSuitActor: Looks exactly like Ernest Borgnine.
* IWasQuiteALooker: Compare his elderly appearance to his younger self.
* LargeHam: EVIL! EVIL!
* {{Leitmotif}}: [[http://www.youtube.com/watch?v=wQDTKPbwxUw The Lineman]].
** SongAssociation: It has existed before ''Spongebob'' was created, but most people think of it as the "Mermaid Man and Barnacle Boy" theme.
* OldSuperhero: Was retired, but became "semi-retired" thanks to SpongeBob.
* SeniorSleepCycle: He can even sleep with his eyes open.
* PutOnABus: Hasn't appeared since Ernest Borgnine's death on July 8th, 2012.
* TokenHuman: And yet he is able to survive underwater.

[[folder:Barnacle Boy]]
->Voiced by: Tim Conway
->Debut: ''"Mermaid Man and Barnacle Boy"''

Mermaidman's sidekick, who is also elderly and lives in the same retirement home.

* ButtMonkey: He suffers the most out of the two.
* {{Expy}}: His suit is modeled after the [[TheSilverAgeOfComicBooks Silver Age]] Aqualad. Oddly, his character is more of an Expy of ComicBook/{{Robin}} than of Aqualad.
* GagNose: Which leads to him and Squidward butting noses in "Mermaid Man and Barnacle Boy IV".
* {{I Was Quite a Looker}}: See Mermaid Man's entry.
* JerkWithAHeartOfGold: He may seem harsh, but he cares about Mermaid Man.
* KidHeroAllGrownUp: He's now old enough to live in a retirement home. Still goes by Barnacle Boy though.
* {{Leitmotif}}: See Mermaid Man.
* OldSuperhero: He lives in a retirement home. It doesn't get older than that.
* TemporarilyAVillain: In ''Mermaid Man and Barnacle Boy V.'' He turned back to normal by the end of the episode though.
* TokenHuman: And is somehow able to breathe underwater.

[[folder:The Flying Dutchman]]
->Voiced by: Brian Doyle-Murray
->Debut: ''"Squidward the Unfriendly Ghost"'' (in a magazine), ''"Scaredy Pants"'' (in-person)

* BigBad: Of ''Revenge of the Flying Dutchman''.
* DressedToPlunder: He talks and dresses like a pirate.
* EvenEvilHasStandards: Not only he looked surprised that Mr. Krabs was willing to sell his soul so eagerly and took the whole ordeal lightly. But he looked dumbfounded that Mr. Krabs sold his soul to other ghosts, monsters, and demons. Plus to Spongebob because he was low on payday.
* FlyingDutchman: At least according to his backstory.
* HairTriggerTemper: He's easily angered.
* HumanoidAbomination: He is the ghost of a human pirate with [[SuperpowerLottery vast amount of supernatural powers.]]
* JerkWithAHeartOfGold: [[DependingOnTheWriter Sometimes]]. He rewards [=SpongeBob=] and Patrick with a gold dubloon each in "Argh!" for saving him the trouble of digging up his old treasure chest, and shows [=SpongeBob=] how to tie knots (though not his shoes) in "Your Shoe's Untied".
* KarmaHoudini: Often. Considering he's a deadly pirate ghost with supernatural powers, it's not surprising.
* LargeHam: Really chews up the scenery when he's being evil.
* {{Leitmotif}}: Suffers the SongAssociation.
* NighInvulnerability: He ''is'' a ghost, but he ''can'' be hurt.
* MonochromeApparition: He's a ghost and glows sickly green.
* PeekABogeyMan: As he puts it in "Shanghaied!", his job is to "sail around and frighten people".
* OurGhostsAreDifferent: This one's a deadly pirate ghost who's implied to be this show's Satan.
* OneWingedAngel: The Flying Dutchman [[ExaggeratedTrope abuses this trope]] on "''Ghost Host''" to the point of desconstruction.
* RealityWarper and VoluntaryShapeshifting: A prime source of the NightmareFuel associated with him, especially in "Ghost Host."
* SicklyGreenGlow: His body.
* YourCheatingHeart: He's apparently married (although we never see his wife), because he hit on a female fish at a party, who eyed him skeptically and noticed his wedding ring.

[[folder:Patchy the Pirate]]
->Played by: TomKenny
->Debut: ''"Christmas Who?"''

* TheChewToy: If something bad happens during his segments, it's usually him it'll happen to.
* ChuckCunninghamSyndrome: When was the last time he showed up in a while?
* DressedToPlunder: Though he doesn't really do any actual plundering.
* ExcitedKidsShowHost: ''Especially'' since he's played by Creator/TomKenny.
* {{Fanboy}}: He's the president of the Spongebob fan club.
* PirateParrot: Has an obnoxious one on his shoulder.
* TalkLikeAPirate: The accent and outfit go along well with it.
* TokenHuman: Notably the only recurring character who is live action.

[[folder:Potty the Parrot]]
->Voiced by: [[DescendedCreator Stephen Hillenburg]] (2000-2004), Paul Tibbit (2007-Present)
->Debut: ''"Christmas Who?"''

* BrattyHalfPint: He's an obnoxious parrot that messes with Patchy's show.
* HypercompetentSidekick: Although ''everyone's'' hypercompetent compared to Patchy.
* ObnoxiousSnarker: He's always getting on Patchy's nerves with witty insults.
* PollyWantsAMicrophone
%%What more can be said than "He's a parrot that talks?" It's kind of CaptainObvious to explain the trope.
* SmallAnnoyingCreature: To Patchy, that is.
* StylisticSuck: He looks like a cheap puppet that's falling apart (and his strings are always visible). His facial expressions never really change (although you can tell when he's annoyed by his voice).
* WithFriendsLikeThese: He's an annoying DeadpanSnarker who loves irritating Patchy...and yet, he seems to be Patchy's only friend.

[[folder:[=SpongeBob=]'s Gramma (Grandma [=SquarePants=])]]
->Voiced by: Marion Ross
->Debut: ''"Grandma's Kisses"''

* CoveredInKisses:(Done to SpongeBob on an implied regular basis)
* SupremeChef: Spongebob ''loves'' her cookies.
* OutOfFocus: Post-movie, borderlining on ChuckCunninghamSyndrome, as she didn't appear at all in seasons six or seven.

[[folder:Pearl Krabs]]
->Voiced by: Lori Alan
->Debut: ''"Squeaky Boots"''

A spoiled, bratty whale who represents the stereotypical teenage girl. Daughter of Mr. Krabs.

* {{Acrofatic}}: Justified. She's a whale.
* BrattyTeenageDaughter: She has her moments.
* DistressedDamsel: in ''Dunces and Dragons''
* GiveGeeksAChance: Her boyfriend was (unexpectedly) a nerdy little baitfish...although she [[InformedAttractiveness describes him as incredibly "long, tan, and handsome"]]
* HugeSchoolgirl: Considering she's a whale among little animals like starfish and squirrels.
* JerkassBall: Specifically in the episode "The Slumber Party" when she and her friends make fun of this sponge girl who looks like Spongebob.
* ObliviousAdoption: It's never openly stated that they're related by blood, but come on. Her father is a ''crab''.
* OutOfFocus: In later seasons.
* ValleyGirl: Borderline case -- she actually falls somewhere between this and a deconstruction of the AlphaBitch.

[[folder:Man Ray]]
->Voiced by: Creator/JohnRhysDavies (first two appearances) and Bob Joles (all subsequent appearances)
->Debut: ''"Mermaid Man and Barnacle Boy III"''

* ArchEnemy: To Mermaid Man and Barnacle Boy.
* {{Expy}} of [[ComicBook/{{Aquaman}} Black Manta]]
* HeelFaceRevolvingDoor: Seemed to pull a HeelFaceTurn in his first appearance, but afterwards reverts to his evil status by the next time we see him. In his third appearance though, he preferred living a normal life, but Spongebob got on his nerves when he didn't do anything wrong at all. Any evil he's done outside of the BadFuture amounts to PokeThePoodle in ''Mermaid Man and Barnacle Boy V'' or just being a villain for hire when he teamed up with Plankton.
* HumanPopsicle: He was frozen in tartar sauce since Mermaid Man's prime, [[NiceJobBreakingItHero until SpongeBob and Patrick freed him]].
* LargeHam: Especially when he's doing his EvilLaugh.
* NotSoHarmlessVillain: A minor villain in the normal series, but a BadFuture where he won proved he was actually able to take over the world and turn it into a dictatorship where everyone was enslaved to his will.
* RedEyesTakeWarning He has red eyes, and he's evil.
* SealedEvilInACan: In his debut episode, he was frozen in tartar sauce until [=SpongeBob=] and Patrick accidentally thawed him out.
* TokenHuman: Well, he's human-like, it's still not clear if he's actually human or not.
** AmbiguouslyHuman: See above.

[[folder:Squilliam Fancyson]]
->Voiced by: Creator/DeeBradleyBaker
->Debut: ''"Band Geeks"''

Squidward's rival from high school. Squilliam is essentially everything Squidward dreamed of being. Whereas Squidward is a middle-class jackass stuck in a dead end job and considered a joke by everyone except [[FanOfTheUnderdog SpongeBob and Patrick]], Squilliam is a successful, filthy stinking rich jackass beloved by all. Also, unlike Squidward, who has had a few PetTheDog moments, he appears to have no redeeming qualities whatsoever. He loves rubbing his success in Squidward's face.

* TheAce: Is this compared to Squidward.
* AlphaBastard: Apart from the fact that he's not a highschooler, he fits this trope to a T.
* AlwaysSomeoneBetter: He's ''far'' more successful than Squidward ever was or will ever hope to be.
* TheBadGuyWins: Won twice, but normally his appearances are a sign Squidward will win this one.
* BigOlUnibrow: Type I
* DubNameChange: Siegbert Schnösel in the German dub
* EvilerThanThou: Well neither are exactly evil, but he's this to Squidward. Take Squidward, add some SmugSnake and several [[TookALevelInJerkass levels in jerkassitude]], and remove any redeeming qualities. That's Squilliam.
* HateSink: Squilliam has almost no sympathetic qualities about him, making it all the easier for one to root for the normally jerkassy Squidward.
* HoistByHisOwnPetard: In "Band Geeks" and "House Fancy"
* HumiliationConga: In the iconic scene of "Band Geeks"
** Gets another one at the end of "House Fancy".
* {{Jerkass}}: Mean, selfish, arrogant and takes great delight in rubbing his wealth and success in Squidward's face.
** JerkWithAHeartOfJerk: Squilliam treats his friends to dinner in ''Squilliam Returns'' though it's most likely to show off his wealth.
* LeanAndMean
* {{Narcissist}}: Ironically, one of the only things he has in common with Squidward, and possibly with every member of his species.
* [[RichBitch Rich Bastard]]: He has a private jet, private yacht, private airship, private casino, etc.
* TheRival: To Squidward.
* SmugSnake: He never misses a chance to rub his success in Squidward's face.
* TalkingtoHimself: With Squidward in the German and Latin-American dubs.
* VillainousBreakdown: At the end of "Band Geeks", he has one. Seeing Squidward completely succeed in an absolutely epic way causes him to '''''have a heart attack!'''''. Has another one at the end of "House Fancy" where Squidward's house [[spoiler: being declared even fancier than his]] leaves Squilliam laying on the ground crying his eyes out.

->Voiced by: PaulTibbit
->Debut: ''"Frankendoodle"''

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

* AxCrazy: He seems to love inflicting pain on others.
* BigBad: Of "Drawn to Life" SpongeBob
* TheGrotesque: Compared to SpongeBob.
* KillAndReplace: "You Doodle, ME SPONGEBOB!!!"
* NightmareFace: He isn't very pleasant to look at.
* SuperStrength: He can easily smash through rocks & throw people.
* TheUnintelligible: His speech is nothing, but random gibberish.
* VileVillainSaccharineShow: He really isn't very nice, is he?
* [[spoiler:WeHardlyKnewYe: Currently, he only appeared once on the show.]]

->Debut: ''"Ripped Pants"''

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

* DroppedABridgeOnHim: subverted.
* RecurringExtra: Whenever there's an episode set at Goo Lagoon, he's usually there.
* SurferDude: He can usually been seen indulging in the sport at the beach.
* TheyKilledKenny: Died in Bubble Buddy, but appears none the worse for wear in later episodes thanks to NegativeContinuity.

[[folder:Bubble Bass]]
->Voiced by: Creator/DeeBradleyBaker
->Debut: ''"Pickles"''

An obese, picky fish who was a recurring nemesis to Spongebob in the first season.

* BigEater: A fan translated his order to be a Krabby Patty with over ''twenty'' patties. Plus, he took off running when Spongebob threw a single piece of popcorn.
* DemotedToExtra: He played a major role in "Pickles" and was built up as a recurring enemy of Spongebob's, but completely disappeared from the show for years. His return was a WhamShot among WhamShot's. Even still, this is the only appearance he's made since the first season. He does pop up in video games from time to time.
* FatBastard: He's really not very nice, nor is he fit. When he's fleeing the Krusty Krab when he's been exposed, he's wheezing as he pathetically lumber-jogs off.
* {{Jerkass}}: He's this more than anything else - in his first appearance, he nearly robbed Spongebob of his self-confidence for ''[[ForTheEvulz no reason whatsoever]]''.
* MeaningfulName: Say his name repeatedly and quickly and you'll discover why the name is perfect for him.
* PetTheDog: In his most recent appearance, he came to thank Plankton for rescuing him.
* RememberTheNewGuy: Somewhat of an example; in his few appearances he was treated as a recurring nemesis.
* UnsatisfiableCustomer: Type 4, since he was making false complaints for SpongeBob's flawless service, either for a free Krabby Patty or just to MindScrew SpongeBob ForTheLulz.

[[folder:The Dirty Bubble]]
->Debut: ''"Mermaid Man and Barnacle Boy II"''

* ChuckCunninghamSyndrome: Anyone remember the last time he showed up?
* TheyKilledKenny: Killed in ''Mermaidman and Barnacleboy II'', but reappears alive and well in ''Mermaidman and Barnacleboy V''.
** This might be because he's a bubble and presumably can reform as long as there's enough of him left to make up a new body.
* WeaksauceWeakness: "Watch the POINT!!!"
* WeHardlyKnewYe: Subverted. In his debut, he is quickly killed by Spongebob less than a minute after he shows up, but is seen alive and well in his second appearance.


A fish well known for saying "CHOCOLATE!"

* AxCrazy: 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 burned our crops, poisoned our water supply, and ''delivered a plague unto our houses!!!''
-->'''Townspeople''': He DID?!?
-->'''Tom''': No! But are we gonna wait around until he ''does''?!?
* LargeHam ''''CHOCOLATE! CHOCOLATE!''''
* PaletteSwap: Into red and lime green.
* TrademarkFavoriteFood: do we even have to say it? ''''CHOCOLATE! CHOCOLATE!''''

[[folder:Betsy Krabs]]
->Voiced by: Sirena Irwin
->Debut: ''"Sailor Mouth"''

Mr Krabs mother, and grandmother to Pearl (although the two haven't been seen together).

* BerserkButton: See Mama Bear. Also, she was ''furious'' when she thought Plankton was just using her to get the Krabby Patty secret recipe.
* GoodParents: She seems to be a loving, fair, but firm mother to Mr. Krabs and also is willing to discipline Spongebob and Patrick on occasion.
* MamaBear: Do ''not'' mess with her son.
* OlderThanTheyLook: Looks about 20 years younger than she is.

[[folder:Uncle Sherm SquarePants]]
->Debut: ''"Krab Borg"'' (mentioned), ''"Pest of the West"'' (seen in a photo)

* TheGhost: His only appearance was in a photo.


->Debut: ''"Reef Blower"''

The guy seen in various episodes to say his famous catchphrase ("MY LEG!") after [[ButtMonkey something bad happens to him]].

* ButtMonkey: There's a reason he says "My leg!"
* BreakoutCharacter: Fans recognize him pretty well. He's got quite the following on the Internet.
* CatchPhrase: MY LEG!!! and DEAUUGH!!
* DemotedToExtra: The blue version is rarely seen after the second movie.
** Except in Season 7,the blue version is seen very commonly.
* OwMyBodyPart: MY LEG!!!
* PaletteSwap: He is in both brown and blue versions.
** There is a brown-green version used only once, in Professor Squidward.
* TheyKilledKennyAgain: Played with; he doesn't ''die'', but whenever he shows up you can expect him to get horribly injured and probably scream "MY LEG!".


[[folder: Other Characters]]

!!'''[=Blackjack SquarePants=]'''
->Voiced by: {{John DiMaggio}}
->Debut: ''"Blackjack"''

* BigGuyLittleGuy: The Little Guy to SpongeBob's Big Guy. The roles were switched when they were young, apparently.
* TheBully: SpongeBob believes he is one.
* DisproportionateRetribution: He got arrested for littering.

!!'''[=Grandpa Redbeard=]'''
->Voiced by: Dennis Quaid
->Debut: ''"Grandpappy the Pirate"''

* ReallySevenHundredYearsOld: If Mr. Krabs was really born in 1942 and his mother is still alive, he must be ''really'' old, considering the setting after the events on ''SB-129'' (It took place in 2017).
* WillNotTellALie: His rule for pirates.

->Voiced by: Thomas F. Wilson
->Debut: ''"Sandy's Rocket"''

* AscendedExtra: He was a background character for a few early episodes before coming into the spotlight as the infamous bully he's known as now.
* BigBad: Of his own episode.
* BlatantLies: He employs these very often, especially when covering his own ass.
* TheBully: He threatens to kick Spongebob's butt the minute he lays eyes on him.
* {{Jerkass}}: He has no reason to antagonize Spongebob, but does so anyway.

->Debut: ''"Neptune's Spatula"''

* JerkassGods: He was slightly nicer in his first appearance, though. He even stated he had no concerns for the affairs of Mortals.

!!'''Kevin the Sea Cucumber'''
->Debute: ''I'm Your Biggest Fanatic''

* ForTheEvulz: 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".
* {{Jerkass}}: And how!
* [[KarmicDeath Karmic Mutilation]]: He doesn't die, [[spoiler:but he does get the fronds on his head torn off at the end of his episode]]. It should be BodyHorror, but he deserved it for the massive jerk he was being.
* KnowNothingKnowItAll: 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.
* NiceHat: [[spoiler:Subverted]].
* NoodleIncident: 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!!!''
* SmugSnake: 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. [[HilarityEnsues And hilariously]].
* UngratefulBastard: Even after Spongebob saves his life, he's ''still'' a massive jerk to him!

!!'''Johnny Erain, AKA [=Realistic Fish Head=]'''
->Debut: ''Mermaid Man and Barnacle Boy II''

* ChuckCunninghamSyndrome: His appearances after season 3 dwindled, save for in appearances in one episode per season, in Season 4, 6, 7 and 8.
* OnlyKnownByTheirNickname: Meta-example; Most fans are unaware of his actual name, so when most people discuss him, they call him "The Realistic Fish Head". It doesn't help that the nickname is how he introduces himself.

!!'''[=Evil Granny=]'''
->Debut: ''Have You Seen This Snail?''

* {{Expy}}: Appears to be one of the evil granny in the ''RenandStimpy'' episode "It's a Dog's Life". Only Gary's lucky this time.
* FatteningTheVictim: It's unknown if she actually ''eats'' the snails she gets, but she overfed Gary constantly and when Gary realizes this, he bails.
* KnightOfCerebus: She intended to kill Gary off and empty his shell; it's shown many snails suffered this fate.

->Voiced by: Dee Bradley Baker
->Debut: "One Krab's Trash"

Spongebob's old classmate. In ''The Sponge Who Could Fly'', he wants him to rub his scalp.

* OneSteveLimit: He's not ''that'' Dennis.


!!Movie Characters

[[folder:King Neptune]]
->Voiced by: Jeffrey Tambor

The ruler of the sea, whose crown is his prize possession and holds his symbol of authority over all his undersea kingdom. It should be noted that he is '''''not''''' the same King Neptune that appears in the series, and is exclusive to the movie.

* AbsurdlyBrightLight: His bald head.
* BerserkButton: Don't touch his crown.
* DivergentCharacterEvolution: As noted, he's a wholly different incarnation of King Neptune than the one in the main series.
* TheGodsMustBeLazy: Couldn't concern himself with the fact that Plankton was ''enslaving'' all of Bikini Bottom. But his ''crown'' and bald head are SeriousBusiness
* InsistentTerminology: He insists his bald head is "thinning!"
* JerkassGods: More so than his series counterpart - he was going to imprison someone who touched his crown for ''[[DisproportionateRetribution 20 years]]''. The kicker? Said person was ''the royal crown polisher''. Also, according to Mindy, he can barely go one day without trying to execute someone.
* JerkWithAHeartOfGold: At the end of the movie, King Neptune gets an aesop on how important it is to have love and compassion when you're in a position of leadership. He also apologizes to Mr. Krabs for freezing him and praises SpongeBob.
* KillItWithFire: Probably his favorite method of solving things.


-> Voiced by: Alec Baldwin

A hitman hired by Plankton to make sure that SpongeBob and Patrick never make it to Shell City. He is a living example of the movie's DarkerAndEdgier tone.

* AxCrazy: He gleefully admits that he loves his job - which involves ''killing people''.
* {{Badass}}: He makes short work of the owner of the Thug Tug.
** BadassBiker: He drives a chopper.
** BadassMustache: He has the ability to grow a mustache on command.
* TheDragon: To Plankton.
* EvilLaugh: "I LOVE THIS JOB!"
* FauxAffablyEvil: He ends up bantering with Spongebob and Patrick for a bit before trying to murder them.
* FluffyTheTerrible: When Plankton mentions that he's a vicious killer and we first see his name, it doesn't look like he'd be threatening. ''Then'' he gets dangerous.
* [[spoiler:KarmicDeath]]: [[spoiler:Implied.]]
* GutturalGrowler
* KnightOfCerebus: When he appears the first time, you know that the movie will be DarkerAndEdgier.
* PsychoForHire
* NotQuiteDead: [[spoiler: The Cyclops stepping on him does not kill him, as he returns riding on "bigger boot". However, he's not seen again after colliding with something and falling off the back of David Hasselhoff]].
* SayingTooMuch: Lampshaded when he accidentally slips that Plankton stole Neptune's crown. Subverted because Mindy had already told SpongeBob and Patrick Plankton stole Neptune's Crown and had become The EvilOverlord of Bikini Bottom. The only thing they didn't know was that Plankton hired Dennis to not only kill them, but to dispense some LaserGuidedKarma by stepping on them, which regularly happens to Plankton
* TestosteronePoisoning: He can grow a mustache on the spot.
* TomTheDarkLord: Dennis isn't exactly the first name to come to mind when you see an insane and merciless hitman.
* VileVillainSaccharineShow: He's one of the only villains concerned with actually offing a character, and he comes pretty close.
* YouWontFeelAThing: Subverted.
-->'''Dennis:''' Don't worry, this will only hurt a lot!

->Voiced by: ScarlettJohansson

A friendly mermaid who does her best to assist SpongeBob and Patrick in their quest to Shell City. She disproves of her father's method of ruling with an iron fist, and wishes he would use a little love and compassion. She is also the target of Patrick's affections.

* [[TheGenericGuy The Generic Girl]]: Many accuse her of being this.
* HeartIsAnAwesomePower: Her supposed Mermaid Magic.
* NiceGirl: Certainly nicer than her father.


[[folder:The Cyclops]]
->Voiced by: Neil Ross (Uncredited as the Live Action Role)

The guardian of Shell City, who is actually a man in a diver suit that he never takes off.

* BiggerBad: His only role in Plankton's scheme is owning the gift shop that buys King Neptune's crown, and yet he's arguably ''far worse'' than Plankton.
* {{Cyclops}}: Well, technically, thanks to his helmet.
* EvilLaugh: The only sound he makes.
* TheFaceless: His helmet doesn't show any facial features.
* HumansAreCthulhu: To the audience, he's just a guy in an old-fashioned diving suit. To the characters, he's an incomprehensible monster defined by his unnaturalness and willingness to kill sea creatures..
* KnightOfCerebus: He only appears for a few minutes, but those minutes are probably the darkest minutes in the whole movie, maybe even the series.
* LaserGuidedKarma: He ends up being attacked by the sea creatures he turned into marine gifts and suntries.
* VileVillainSaccharineShow: Remember how Dennis came close to killing Spongebob and Patrick? This guy ''actually succeeds''. Sure, they get better, but even so...

[[folder:King Neptune's Squire]]
->Voiced by: Carlos Alazraqui

[[ExactlyWhatItSaysOnTheTin King Neptune's Squire]], who accompanies Neptune pretty much wherever he goes, and must obey his every command.

* ButtMonkey: Gets hit over the head by Neptune twice.
* OnlyKnownByTheirNickname: He is only addressed as "squire" throughout the movie.

[[folder:Burger-Beard the Pirate]]
->Portrayed by: AntonioBanderas

The main antagonist of ''[[WesternAnimation/TheSpongebobMovieSpongeOutOfWater The SpongeBob Movie: Sponge Out of Water]]'', a pirate who seeks the Krabby Patty secret formula.

* {{Badass}}: Retrieves a magical book from an island so effortlessly that he literally danced through the booby traps guarding it and toyed with the animated skeleton that tries to take it back during their fight.
* BadassNormal: Manages to put up a winning battle against [=SpongeBob=] and his friends after they gain superpowers while being just an ordinary human.
* BigBad: Of the second movie.
* CaptainColorbeard: '''Burger'''-Beard
* CoolLoser: In spite of the fact that he's pretty much an outcast that was clearly BornInTheWrongCentury, Burger-Beard owns an awesome-looking pirate ship, which is pimped-out with wheels and a ton of cannons on it.
* CutLexLuthorACheck: PlayedWith. The first thing he does once he gets the magical book is steal the Krabby Patty recipe so he can make money off of it rather than just make himself rich. Possibly justified by the fact that it is implied that the book is limited to influencing what has already been written in it, meaning Burger Beard can't do anything directly for himself with it.
* LargeHam: You can clearly tell Antonio Banderas was having one heck of a great time.
** EvilIsHammy
* PetTheDog: Sings the Spongebob theme song with the seagulls at the end of the movie.
* APirate400YearsTooLate: The live-action parts of the movie are set in a modern, United States coast town, and he clearly doesn't belong. In fact, his pirate ship has wheels on it.

[[folder:Bubbles the Dolphin]]
->Voiced by: MattBerry

* BaldOfAwesome: When we first see him it is from the back giving him the appearance of a bald man. Being a dolphin, this applies anyways.
* FluffyTheTerrible: While he doesn't look terrifying he has immense powers and can shoot lasers from his blowhole.
* HeelFaceTurn: Goes from trying to kill Spongebob to helping him.
* HeroicDolphin: gives the main characters the ability to breathe air.
* HollywoodTourettes/FurryReminder: constantly and involuntarily makes dolphin whistling noises.
* LargeHam: He's played by Matt Berry.
* SpaceWhale: Arguably. He can travel through space.
* StopMotion: How he's animated
* ToiletPaperTrail: Has this after he leaves the restroom.
* TheWatcher: He's a parody of Uatu from Marvel Comics. However he loses this job.