Encyclopedia SpongeBobia


Encyclopedia SpongeBobia
Encyclopedia SpongeBobia

Karen is one of the show's ten main characters, as well as one of the two main villains along with Plankton.

Karen was named after Karen Hillenburg, the wife of the show's creator, Stephen Hillenburg.[1] Stephen called his wife "the funniest person he knows"[2] and her sense of humor inspired the cartoon Karen's personality. Karen's voice is provided by Jill Talley, who is the wife of SpongeBob's voice actor, Tom Kenny.

In early episodes up to the season 4 episode "Best Frenemies," Karen was an immobile computer screen stationed in the Chum Bucket. Starting with The SpongeBob SquarePants Movie and the season 5 episode "Friend or Foe," Karen is given a "mobile form" that allows her to interact with other characters.

Doug Lawrence decided that Plankton and Karen should be an inseparable duo, with Karen as the brains of the operation, always supplying Plankton with evil plans. Lawrence said: "I want more Karen on the show ... The married life of an evil genius is the funniest thing to me, so in that regard [Karen] definitely enhances Plankton’s stories making him more than just your typical bad guy."[3]

The SpongeBob SquarePants Movie 844

Plankton and Karen promoted to the "Main Cast" section.

Doug Lawrence says that Plankton and Karen finally became main characters after the third season. The credits of the 2004 movie were the first time that the SpongeBob franchise ever billed a "Main Cast" in its credits. Both Plankton and Karen were both officially promoted to main characters in the film's credits. Since then, their stories have been one of the show's most popular and important elements. Karen has also appeared in numerous tie-in books, comics, and video games.


SpongeBob SquarePants[]

Note: In the first three seasons, Karen and Plankton were not main cast members yet.

Image # Episode Role in episode
Season 1
Plankton! 166
"Plankton!" (trga) Debut Minor(wall form); she analyzes a piece of seaweed and Plankton.
F.U.N. 123
"F.U.N." (trga) Supporting; she gives Plankton the plan to trick SpongeBob.
Sleepy Time 190
"Sleepy Time" (trga) Cameo; her rarely-seen desktop form is on Plankton's desk.
Season 2
Imitation Krabs 197
"Imitation Krabs" (trga) Supporting (Robot Krabs form); her system is built into Robot Krabs, and her voice announces the self-destruct mode.
Welcome to the Chum Bucket 103
"Welcome to the Chum Bucket" (trga) Supporting; she gives Plankton the plan to show SpongeBob some compassion.
Season 3
The Algae's Always Greener 045
"The Algae's Always Greener" (trga) Supporting; she gives Plankton the plan to use his transmogrifier.
Plankton's Army 069
"Plankton's Army" (trga) Major; she helps and consoles Plankton after his failures, and later meets Plankton's cousins. She learns Plankton's first name, Sheldon.
Season 4
Fear of a Krabby Patty 029
"Fear of a Krabby Patty" (trga) Minor; Plankton asks Karen why she isn't laughing with him.
Note: This is Karen and Plankton's first appearance as official main cast members, as they were both promoted in the credits of the 2004 movie.
Krabs vs. Plankton 008
"Krabs vs. Plankton" (trga) Minor; she gives a depressed Plankton words of support.
Dunces and Dragons 232
"Dunces and Dragons" (trga) Supporting, Karen's medieval ancestor appears as a crystal ball.
Enemy In-Law 200
"Enemy In-Law" (trga) Major; Plankton is bored and annoyed with her and wants to find a new romance.
New Leaf 057
"New Leaf" (trga) Cameo, Robot Krabs form; the Robot Krabs (which has Karen's system built into it) appears.
Best Frenemies 165
"Best Frenemies" (trga) Supporting; she analyzes the Kelp Shakes and finds out what they are made of.
Season 5
Friend or Foe 370
"Friend or Foe" (trga) Major; she tells the real story of how Plankton and Mr. Krabs became enemies.
Karen in Spy Buddies
"Spy Buddies" (trga) Non-speaking cameo; Plankton talks to her from off-screen, and she is later seen in the Chum Bucket.
Krabs à la Mode 099
"Krabs à la Mode" (trga) Supporting; Karen gives Plankton the idea to steal a Krabby Patty in the cold confusion.
Bucket Sweet Bucket 189
"Bucket Sweet Bucket" (trga) Major; she wants the Chum Bucket to have a makeover.
Goo Goo Gas 065
"Goo Goo Gas" (trga) Major; she tells Plankton how to make his plan really work.
Mermaid Man vs. SpongeBob 032
"Mermaid Man vs. SpongeBob" (trga) Supporting; she brings Plankton a Mermaid Man kids' meal.
20,000 Patties Under the Sea 062
"20,000 Patties Under the Sea" (trga) Karen's voice is built into the Chum Bucket glove and says "Customer approaching." Her control panel is also seen in the Chum Bucket.
Banned in Bikini Bottom 101
"Banned in Bikini Bottom" (trga) Supporting; she explains that the Krusty Krab was closed down.
Season 6
Krabby Road 023
"Krabby Road" (trga) Supporting; she throws Plankton out of the Chum Bucket for being a jailbird.
Spongicus 045
"Spongicus" (trga) Supporting; she is Plankton's helper at the Chum Coliseum.
Patty Caper 071
"Patty Caper" (trga) Minor; she gives Plankton their own version of a Krabby Patty.
Plankton's Regular 274
"Plankton's Regular" (trga) Major; she pays Nat to eat at the Chum Bucket.
The Krabby Kronicle 128
"The Krabby Kronicle" (trga) Minor; Plankton tries to show Karen a chum stick when the restaurant gets shut down. Later, Karen is seen powered off when Plankton is out of business.
Komputer Overload 089
"Komputer Overload" (trga) Major; Plankton tries to replace Karen with an army of new robots.
Chum Bucket Supreme 029
"Chum Bucket Supreme" (trga) Supporting; she gives Plankton the idea to advertise his products.
Single Cell Anniversary 039Single Cell Anniversary 057
"Single Cell Anniversary" (trga) Major; it is Karen and Plankton's anniversary, and Plankton gets SpongeBob to help him find a gift for Karen.
Truth or Square 172
"Truth or Square" (trga) Supporting; she gives Plankton the courage to go out and steal the formula. All three of her main forms are seen in this episode: wall, desktop, and mobile.
Chum Caverns 034Chum Caverns 055
"Chum Caverns" (trga) Major; Karen gives Plankton the directions to the cavern, and later gives him the plan to use the scenery to attract customers.
Season 7
Tentacle-Vision 148
"Tentacle-Vision" (trga) Cameo; Plankton watches the show on Karen's screen.
Someone's in the Kitchen with Sandy 050Someone's in the Kitchen with Sandy 064
"Someone's in the Kitchen with Sandy" (trga) Supporting; Karen thinks Plankton's plan is repulsive.
The Inside Job 031
"The Inside Job" (trga) Major; Karen gives Plankton her mind connector to get inside other people's brains.
Greasy Buffoons 131
"Greasy Buffoons" (trga) Supporting; Karen helps serve the greasy food.
SpongeBob's Last Stand 313
"SpongeBob's Last Stand" (trga) Minor; Karen gives Plankton a back massage.
One Coarse Meal 111
"One Coarse Meal" (trga) Supporting; Karen doesn't believe that Pearl is actually following Plankton.
Dialogue mention
"Gramma's Secret Recipe" (trga) Indirectly mentioned as "family"
The Great Patty Caper 072
"The Great Patty Caper" (trga) Non-speaking cameo; Plankton says goodbye to her.
Buried in Time 199
"Buried in Time" (trga) Cameo; she watches Plankton in his restroom.
Shellback Shenanigans 036
"Shellback Shenanigans" (trga) Supporting; she uses her telescope to spy on SpongeBob and Mr. Krabs.
Perfect Chemistry 040
"Perfect Chemistry" (trga) Supporting; Sandy compliments Karen when she visits.
Season 8
Frozen Face-Off 327
"Frozen Face-Off" (trga) Major; after Plankton leaves Karen in the snow, she teams up with SpongeBob to stop Plankton.
Sweet and Sour Squid 030
"Sweet and Sour Squid" (trga) Minor; Plankton shows Karen his idea.
Walking the Plankton 184
"Walking the Plankton" (trga) Major; Karen and Plankton go on their second honeymoon.
Plankton's Good Eye 037
"Plankton's Good Eye" (trga) Major; Karen gives Plankton the eye surgery.
Fiasco! Credits
"Fiasco!" (trga) Deleted scene, credited in voice cast
Free Samples 007
"Free Samples" (trga) Supporting; Karen is confused by Plankton's free sample idea.
Karen 2.0 147
"Karen 2.0" (trga) Major; Plankton builds a new version of Karen, making her feel devastated.
For Here or to Go 181
"For Here or to Go" (trga) Supporting; Karen cuts the patty out of Plankton and analyzes it.
It's a SpongeBob Christmas! 072
"It's a SpongeBob Christmas!" (trga) Supporting; Karen tells Plankton that he would get a real present if he wasn't a jerk.
Chum Fricassee 114
"Chum Fricassee" (trga) Supporting; Karen is the cashier for the restaurant.
Move It or Lose It 118
"Move It or Lose It" (trga) Supporting; Karen helps Plankton sell things to earn money.
Season 9
Eek, an Urchin! 080
"Eek, an Urchin!" (trga) Distorted voice only; Karen calls Plankton on his cell phone.
Jailbreak! 027
"Jailbreak!" (trga) Minor; she visits Plankton in jail.
Evil Spatula 084
"Evil Spatula" (trga) Supporting; she mixes the ingredients that Mr. Krabs says.
It Came from Goo Lagoon 122
"It Came from Goo Lagoon" (trga) Minor; she has a mini form built into the submarine.
Plankton's Pet 036Plankton's Pet 124
"Plankton's Pet" (trga) Major; she gives Plankton the idea to get a pet.
Screen Shot 2019-04-05 at 3.06.10 PM
"Company Picnic" (trga) Deleted scene, credited in voice cast
Mall Girl Pearl 070
"Mall Girl Pearl" (trga) Cameo (non-speaking); she is at the mall on the top floor.
CopyBob DittoPants 100
"CopyBob DittoPants" (trga) Supporting; she has a party with SpongeBob and Plankton, then tries to help teach the SpongeCopies.
Lame and Fortune 078
"Lame and Fortune" (trga) Major; she makes the fortune cookies and calms down the crowd.
Pineapple Invasion 005
"Pineapple Invasion" (trga) Minor; she gives Plankton a push.
Salsa Imbecilicus 114
"Salsa Imbecilicus" (trga) Major; She and Sandy team up to help make the town smart again.
Season 10
"Mimic Madness" (trga) Deleted scene;[4] in the original storyboard, when Sandy and Plankton are playing chess and SpongeBob mimics them, Karen comes out of the Chum Bucket and laughs at SpongeBob's impression of Plankton.
Plankton Gets the Boot 038
"Plankton Gets the Boot" (trga) Major; she kicks Plankton out of the Chum Bucket and he tries to make her jealous.
Plankton Retires 084
"Plankton Retires" (trga) Supporting; she consoles Plankton after his failure.
The Incredible Shrinking Sponge 126
"The Incredible Shrinking Sponge" (trga) Minor; she scans SpongeBob and flicks him away.
Karen in Feral Friends deleted scene
"Feral Friends" (trga) Deleted scene;[5] in the rough storyboard, she gave Plankton his food when he got turned into a feral copepod.
Don't Wake Patrick 090
"Don't Wake Patrick" (trga) Cameo (wall form); Karen's wall form is seen in the corner of the Chum Bucket.
Season 11
Spot Returns 188
"Spot Returns" (trga) Major; she has a "cute overload" from all the puppies.
Spin the Bottle 014
"Spin the Bottle" (trga) Supporting; she asks Plankton about his genie scheme.
The Legend of Boo-Kini Bottom 115
"The Legend of Boo-Kini Bottom" (trga) Supporting; she puts on a show about the horrors of the Krusty Krab.
Krabby Patty Creature Feature 151
"Krabby Patty Creature Feature" (trga) Minor; she gets infected by the patties.
Grandmum's The Word 036
"Grandmum's the Word" (trga) Supporting; she and Plankton try to have a date when Plankton's grandma interrupts it.
Bottle Burglars 130
"Bottle Burglars" (trga) Supporting; Karen is proud of Plankton, and later, she sleepwalks and scares SpongeBob.
Shopping List 196
"Shopping List" (trga) Minor; Karen is a chef and tells Plankton not to add the last ingredient.
Patnocchio 170
"Patnocchio" (trga) Narrates episode; she plays a computer fairy who tells the story of Patnocchio.
Karen's Virus 152
"Karen's Virus" (trga) Major; she gets a virus, and SpongeBob has to journey into her hard drive to get it out.
Girls' Night Out 170
"Girls' Night Out" (trga) Major; she is one of the Gal Pals.
Season 12
Gary & Spot 048
"Gary & Spot" (trga) Minor; she sleeps while Spot escapes.
King Plankton 019
"King Plankton" (trga) Supporting; she offers to watch SpongeBob's sea chimps for the day.
Plankton's Old Chum 015
"Plankton's Old Chum" (trga) Supporting; she tells Plankton to throw out his old chum.
The Krusty Bucket 036
"The Krusty Bucket" (trga) Minor; she watches the creation of PlanKrab.
Karen's Baby 073
"Karen's Baby" (trga) Major; she orders a baby computer for her and Plankton.
SpongeBob's Big Birthday Blowout 448
"SpongeBob's Big Birthday Blowout" (trga) Minor; she and Plankton dance at the party.
The Ghost of Plankton 155
"The Ghost of Plankton" (trga) Supporting; Karen puts on a funeral for Plankton when he is thought to be dead.
My Two Krabses 088
"My Two Krabses" (trga) Minor; she brings out some chum to make Chum Krabs.
Hiccup Plague 114
"Hiccup Plague" (trga) Minor; she catches a hiccup bubble, but shortly after gets rid of it.
A Cabin in the Kelp 129
"A Cabin in the Kelp" (trga) Major; she is one of the Gal Pals.
The Hankering 200
"The Hankering" (trga) Supporting; she analyzes Mr. Krabs to find Plankton inside.
Who R Zoo 165
"Who R Zoo?" (trga) Minor; she and Plankton are scared by bubble penguins.
Plankton's Intern 005
"Plankton's Intern" (trga) Minor; she leaves for vacation and later returns.
Season 13
Lockdown for Love 028
"Lockdown for Love" (trga) Major; She puts the Chum Bucket on lockdown to get Plankton to prove his affection for her.
There Will Be Grease 045
"There Will Be Grease" (trga) Supporting; Karen sets up Mr. Krabs and Plankton's scheme by telling them that the grease's flavoring can be used for a profit.
The Big Bad Bubble Bass 193
"The Big Bad Bubble Bass" (trga) Narrates episode; she plays a fairy who tells the story of the Big Bad Bubble Bass.
Sea-Man Sponge Haters Club 135Sea-Man Sponge Haters Club 129
"Sea-Man Sponge Haters Club" (trga) Minor; in Plankton's story, she and Plankton try to shoo SpongeBob out of the Chum Bucket. Her wall form appears when SpongeBob enters it.
Say Awww! 021
"Say Awww!" (trga) Minor; Plankton complains to Karen about everyone finding him adorable, which gives him the idea to build a robot, Q.T.-π, that will eat anyone who says "aww!"
Captain Pipsqueak 043
"Captain Pipsqueak" (trga) Minor; she prepares a bath for Plankton and judges his supervillian costumes.
Welcome to Binary Bottom 122
"Welcome to Binary Bottom" (trga) Minor; in Binary Bottom, Karen is a fish instead of a computer while everyone else is a robot.
Karen for Spot 093
"Karen for Spot" (trga) Major; she takes care of Spot while Plankton is away, and she struggles to keep him under control.
The Flower Plot 107
"The Flower Plot" (trga) Supporting; She supports Plankton's flower shop formula stealing plot and disguises as a sunflower.
Plankton and the Beanstalk 018
"Plankton and the Beanstalk" (trga) Supporting; a storybook version of Karen named Clockwork Karen feeds Jack Plankton a magic bean.
Season 14
Single-Celled Defense 028
"Single-Celled Defense" (trga) Minor; she takes Plankton dancing to cheer him up.
Blood is Thicker Than Grease 176
"Blood is Thicker Than Grease" (trga) Supporting; she talks to Plankton about his plan and becomes a waiter at the Spud Bucket.
Tango Tangle 073
"Tango Tangle" (trga) Major; she and Plankton take tango lessons.

Kamp Koral: SpongeBob's Under Years[]

Image # Episode Role in episode
Season 1
Kitchen Sponge 125
"Kitchen Sponge" (trga) Minor; she is Plankton's assistant.
Midnight Snack Attack 027
"Midnight Snack Attack" (trga) Supporting; she helps SpongeBob and Patrick get snacks out of the vending machine, turning them into monsters.
Wise Kraken 002
"Wise Kraken" (trga) Minor; she is seen with Plankton in their hideout and is seen outside when Plankton participates in stand-up comedy night.
The Switch Glitch 019
"The Switch Glitch" (trga) Major; she swaps bodies with Patrick.
The Taste of Defeat 144
"The Taste of Defeat" (trga) Minor; she cleans Plankton after he is sprayed by skunks, and suggests that he take a cooking class.
In a Nut's Shell 084
"In a Nut's Shell" (trga) Minor; she plays a prank on Plankton, and later takes him to Narlene and Nobby.

The Patrick Star Show[]

Image # Episode Role in episode
Season 1
Terror at 20,000 Leagues 248Terror at 20,000 Leagues 310
"Terror at 20,000 Leagues" (trga) Cameo; she is pictured on a box of Logic Loops.
Plankenstein's ex-wife, a black-and-white counterpart to Karen, also appears.
Season 2
Chum Bucket List 070
"Chum Bucket List" (trga) Cameo (non-speaking); Plankton asks her to move her mannequin collection out of the kitchen.


Image # Movie Role in movie
The SpongeBob SquarePants Movie 070The SpongeBob SquarePants Movie 728
The SpongeBob SquarePants Movie (trga) Supporting, debut of mobile Karen; she gives Plankton the idea to use "Plan Z" and works beside him when he becomes a dictator.
Note: This is Karen and Plankton's first appearance as main cast members.
The SpongeBob Movie Sponge Out of Water 434The SpongeBob Movie Sponge Out of Water 455
The SpongeBob Movie: Sponge Out of Water (trga) Supporting; she helps Plankton and later powers the time machine.
The SpongeBob Movie Sponge on the Run 106

The SpongeBob Movie Sponge on the Run 1089

The SpongeBob Movie: Sponge on the Run (trga) Supporting; After yet another Plankton failure, Karen says that SpongeBob, not Mr. Krabs the reason for Plankton's failed attempts at stealing the secret formula. In the end of the movie, she and Plankton are walking their snail with Otto.

Video games[]

Game Role in game
PC and console games
SuperSponge PS1 version: Appears in the Chum Bucket background
Revenge of the Flying Dutchman GBA version, level 3 boss fight: Appears on Plankton's robot
Battle for Bikini Bottom Appears in opening cutscene and Kah-Rah-Tae!
SpongeBob SquarePants Typing Mentioned
Nickelodeon Toon Twister 3-D Appears in the Chum Bucket in the opening and menu
The SpongeBob SquarePants Movie (video game) PC version, Evil Under the Sea level: Player interacts with Karen
GBA and console versions: Appears in cutscenes
Lights, Camera, Pants! Console version: Host of Chum Bucket levels
PC version: Appears as an unlockable actor
The Yellow Avenger Interacts with the player in the Chum Bucket
Creature from the Krusty Krab Guide for the player in Plankton's levels
SpongeBob's Atlantis SquarePantis Mentioned many times by Plankton
SpongeBob's Atlantis SquarePantis SquareOff Wall form appears
Drawn to Life: SpongeBob SquarePants Edition Mobile Karen is one of the preset playable character designs
SpongeBob SquarePants featuring Nicktoons: Globs of Doom Appears in the Chum Bucket
SpongeBob's Truth or Square Appears and talks in the Chum Bucket throughout the game
SpongeBob SquigglePants Appears in various minigames
SpongeBob SquarePants Tooncast Studio Appears in the Chum Bucket background
Plankton's Robotic Revenge Voice only; she is heard speaking on the main menu screen and in the game's intro cutscene
SpongeBob HeroPants Karen's time machine form appears throughout the game
Battle for Bikini Bottom: Rehydrated Appears in opening cutscene and Kah-Rah-Tae!
The Cosmic Shake
Mobile apps
SpongeBob Moves In! Appears in multiple quests
SpongeBob's Game Frenzy Scan the Patty minigame: Playable
The SpongeBob Movie Game: Sponge on the Run Karen's time machine form appears throughout the game
SpongeBob Game Station Appears in Sponge Run minigame and promo art
SpongeBob Town Appears with Plankton
SpongeBob: Patty Pursuit Appears as the final boss


Book Role in book
Krusty Krab Adventures Appears in "The Algae's Always Greener" segment
Tales from Bikini Bottom Appears in "F.U.N." segment
SpongeBob Saves the Day (Cine-Manga book) Appears in "Plankton!" segment
The SpongeBob SquarePants Oracle Quotes from Karen are featured
SpongeBob Exposed! The Insider's Guide to SpongeBob SquarePants Appears on Chum Bucket and Plankton bio pages
The SpongeBob SquarePants Movie (book) Same role as the movie
The SpongeBob SquarePants Movie (Cine-Manga book) Same role as the movie
Who's Hungry? Appears in "Welcome to the Chum Bucket" segment
Stop the Presses! Supporting
Comic Number 8 Appears in "Imitation Krabs" segment
SpongeBob DetectivePants: The Case of the Missing Spatula Supporting
Comic Crazy! Appears in Best Fiend
The Great Escape Same role as "Truth or Square"
Pirates of Bikini Bottom Karen's screen appears on Plankton's robots
SpongeBob's Runaway Roadtrip (book) Appears in "Walking the Plankton" segment
Dancing With The Star Minor
The SpongeBob Movie: Sponge Out of Water - The Junior Novelization Same role as the movie
Krabby Patty Caper Same role as the movie


Image Issue Comic(s)
Comics-4-Karen-family SpongeBob Comics No. 4 A Plankton Family Tree
Comics-3-Karen-says-sure SpongeBob Comics No. 5 Truckin'!
Comics-6-Plankton-and-Karen SpongeBob Comics No. 6 Bikini Bottom 2
Comics-8-Karen-wall-form SpongeBob Comics No. 8 Formula for Success
Comics-14-Plankton-talks-to-Karen SpongeBob Comics No. 14 Dream a Patty Dream
One Night at the Chum Bucket
Plankton's Last Laff
Comics-20-Karen-has-a-present SpongeBob Comics No. 20 Tiny Tales
Comics-21-Plankton-compliments-Karen SpongeBob Comics No. 21 Eye of the Beholder
Comics-35-Karen-thesaurus SpongeBob Comics No. 35 Plankton's Petulant Protests
Comics-44-Mr-Krabs-sneaks-past-Karen SpongeBob Comics No. 44 Spongefellas
TBA SpongeBob Comics No. 47 Plankton and the Amoeba Gang
TBA SpongeBob Comics No. 50 Cover
50! 50! 50! (pictured)
Comics-53-Karen-explains-SpongeBob SpongeBob Comics No. 53 Seaquake!
Comics-54-talking-to-Karen SpongeBob Comics No. 54 Only the Clonely
Comics-56-Karen-roasts-Plankton SpongeBob Comics No. 56 Plankton vs. Gary
TBA SpongeBob Comics No. 58 Inside back cover
Comics-59-Karen-up-close SpongeBob Comics No. 59 Cover
Dry Noon
TBA SpongeBob Comics No. 71 Shhhh!
TBA SpongeBob Comics No. 72 Plankton at Home
TBA SpongeBob Comics No. 79 A Crosshatch of Despair
TBA SpongeBob Comics No. 81 The Inner Journey!
TBA SpongeBob Comics No. 82 Cover
TBA SpongeBob Comics No. 83 Inside front cover
The Goop, the Bad, and the Chummy!
Plankton's Country Cousin
Dialogue mention SpongeBob Comics Annual Super-Giant Swimtacular No. 3 The Consumer Is Always Right (mentioned)