Appearances

Karen is one of the show's ten main characters, as well as one of the two main villains along with Plankton. She was created by Stephen Hillenburg in 1998, shortly after he married his wife, Karen Hillenburg. Stephen called his wife "the funniest person he knows"[1] and her sense of humor inspired the cartoon Karen's personality.

Doug Lawrence, the voice of Plankton and a writer on the show, helped Hillenburg develop Karen's character.[2] Lawrence notably decided that she and Plankton should be an inseparable duo, with Karen as the brains of the operation, always supplying Plankton with evil plans. In early episodes and up to "Plankton's Pet", Karen was an immobile computer screen stationed in the Chum Bucket; she eventually gained a "mobile form" that allows her to interact with other characters.

Karen and Plankton were both officially promoted to main characters in the credits of the 2004 film and have been part of the main cast ever since. Karen has also appeared in numerous tie-in books, comics, and video games.

Episodes

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

Image # Title Role in episode
Season 1
Plankton! 159.jpg
3b
"Plankton!" (tr) Debut (wall form); she analyzes a piece of seaweed and Plankton.
F.U.N 094.png
10b
"F.U.N." (tr) Supporting; she gives Plankton the plan to trick SpongeBob.
Sleepy Time 134a.png
15a
"Sleepy Time" (tr) Cameo (desktop form); her rarely-seen desktop form is on Plankton's desk.
Season 2
Imitation Krabs 197.png
24b
"Imitation Krabs" (tr) 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.png
34a
"Welcome to the Chum Bucket" (tr) Supporting; she gives Plankton the plan to show SpongeBob some compassion.
Season 3
The Algae's Always Greener 045.png
41a
"The Algae's Always Greener" (tr) Supporting; she gives Plankton the plan to use his transmogrifier.
Plankton's Army 069.png
58b
"Plankton's Army" (tr) 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 015.png
61a
"Fear of a Krabby Patty" (tr) 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.png
62b
"Krabs vs. Plankton" (tr) Minor; she gives a depressed Plankton words of support.
Dunces and Dragons 124.jpg
66
"Dunces and Dragons" (tr) Supporting, Karen's medieval ancestor appears as a crystal ball.
Enemy In-Law 200.png
67a
"Enemy In-Law" (tr) Major; Plankton is bored and annoyed with her and wants to find a new romance.
New Leaf 057.png
73a
"New Leaf" (tr) Cameo, Robot Krabs form; the Robot Krabs (which has Karen's system built into it) appears.
Best Frenemies 165.png
78b
"Best Frenemies" (tr) Supporting; she analyzes the Kelp Shakes and finds out what they are made of.
Season 5
Friend or Foe 374.png
81
"Friend or Foe" (tr) Major; she tells the real story of how Plankton and Mr. Krabs became enemies.
Karen in Spy Buddies.png
84a
"Spy Buddies" (tr) Non-speaking cameo; Plankton talks to her from off-screen, and she is later seen in the Chum Bucket.
Krabs à la Mode 099.png
85b
"Krabs à la Mode" (tr) Supporting; Karen gives Plankton the idea to steal a Krabby Patty in the cold confusion.
Bucket Sweet Bucket 189.png
86b
"Bucket Sweet Bucket" (tr) Major; she wants the Chum Bucket to have a makeover.
Goo Goo Gas 062.png
91a
"Goo Goo Gas" (tr) Major; she tells Plankton how to make his plan really work.
Karen-Atlantis-game-wall-form.png
92
"Atlantis SquarePantis" (tr) Appears in video game adaptation
Mermaid Man vs. SpongeBob 032.png
94b
"Mermaid Man vs. SpongeBob" (tr) Supporting; she brings Plankton a Mermaid Man kids' meal.
20,000 Patties Under the Sea 063.png
97a
"20,000 Patties Under the Sea" (tr) 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.png
100a
"Banned in Bikini Bottom" (tr) Supporting; she explains that the Krusty Krab was closed down.
Season 6
Krabby Road 020.png
101b
"Krabby Road" (tr) Supporting; she throws Plankton out of the Chum Bucket for being a jailbird.
Spongicus 039.png
103a
"Spongicus" (tr) Supporting; she is Plankton's helper at the Chum Coliseum.
Patty Caper 071.png
108a
"Patty Caper" (tr) Minor; she gives Plankton their own version of a Krabby Patty.
Plankton's Regular 274.jpg
108b
"Plankton's Regular" (tr) Major; she pays Nat to eat at the Chum Bucket.
The Krabby Kronicle 128.png
109b
"The Krabby Kronicle" (tr) 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 172.jpg
118b
"Komputer Overload" (tr) Major; Plankton tries to replace Karen with an army of new robots.
Chum Bucket Supreme 024.png
122a
"Chum Bucket Supreme" (tr) Supporting; she gives Plankton the idea to advertise his products.
Single Cell Anniversary 039.pngSingle Cell Anniversary 057.png
122b
"Single Cell Anniversary" (tr) Major; it is Karen and Plankton's anniversary, and Plankton gets SpongeBob to help him find a gift for Karen.
Truth or Square 077.pngTruth or Square 076.pngTruth or Square 253.png
123-124
"Truth or Square" (tr) 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 030.jpgChum Caverns 050.jpg
125b
"Chum Caverns" (tr) 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.png
127a
"Tentacle-Vision" (tr) Cameo; Plankton watches the show on Karen's screen.
Someone's in the Kitchen with Sandy 048.jpgSomeone's in the Kitchen with Sandy 058.jpg
129a
"Someone's in the Kitchen with Sandy" (tr) Supporting; Karen thinks Plankton's plan is repulsive.
The Inside Job 031.png
129b
"The Inside Job" (tr) Major; Karen gives Plankton her mind connector to get inside other people's brains.
Greasy Buffoons 131.png
130a
"Greasy Buffoons" (tr) Supporting; Karen helps serve the greasy food.
SpongeBob's Last Stand 313.png
134
"SpongeBob's Last Stand" (tr) Minor; Karen gives Plankton a back massage.
One Coarse Meal 111.png
137a
"One Coarse Meal" (tr) Supporting; Karen doesn't believe that Pearl is actually following Plankton.
Dialogue mention
139a
"Gramma's Secret Recipe" (tr) Indirectly mentioned as "family"
The Great Patty Caper 084.png
143
"The Great Patty Caper" (tr) Non-speaking cameo; Plankton says goodbye to her.
Buried in Time 199.png
145a
"Buried in Time" (tr) Cameo; she watches Plankton in his restroom.
Shellback Shenanigans 038.png
147b
"Shellback Shenanigans" (tr) Supporting; she uses her telescope to spy on SpongeBob and Mr. Krabs.
Perfect Chemistry 032.jpg
152b
"Perfect Chemistry" (tr) Supporting; Sandy compliments Karen when she visits.
Season 8
Frozen Face-Off 335.png
156
"Frozen Face-Off" (tr) Major; after Plankton leaves Karen in the snow, she teams up with SpongeBob to stop Plankton.
Sweet and Sour Squid 031.jpg
158a
"Sweet and Sour Squid" (tr) Minor; Plankton shows Karen his idea.
Walking the Plankton 206.jpg
160b
"Walking the Plankton" (tr) Major; Karen and Plankton go on their second honeymoon.
Plankton's Good Eye 047.jpg
163b
"Plankton's Good Eye" (tr) Major; Karen gives Plankton the eye surgery.
Fiasco! Credits.png
168b
"Fiasco!" (tr) Deleted scene, credited in voice cast
Free Samples 008.jpg
170a
"Free Samples" (tr) Supporting; Karen is confused by Plankton's free sample idea.
Karen 2.0 158.png
171a
"Karen 2.0" (tr) Major; Plankton builds a new version of Karen, making her feel devastated.
For Here or to Go 188.jpg
174b
"For Here or to Go" (tr) Supporting; Karen cuts the patty out of Plankton and analyzes it.
It's a SpongeBob Christmas! 072.png
175
"It's a SpongeBob Christmas!" (tr) Supporting; Karen tells Plankton that he would get a real present if he wasn't a jerk.
Chum Fricassee 121.jpg
176b
"Chum Fricassee" (tr) Supporting; Karen is the cashier for the restaurant.
Move It or Lose It 123.png
177b
"Move It or Lose It" (tr) Supporting; Karen helps Plankton sell things to earn money.
Season 9
Eek, an Urchin! 080.png
183a
"Eek, an Urchin!" (tr) Distorted voice only; Karen calls Plankton on his cell phone.
Jailbreak! 018.png
184a
"Jailbreak!" (tr) Minor; she visits Plankton in jail.
Evil Spatula 084.png
184b
"Evil Spatula" (tr) Supporting; she mixes the ingredients that Mr. Krabs says.
It Came from Goo Lagoon 088.png
185
"It Came from Goo Lagoon" (tr) Minor; she has a mini form built into the submarine.
Plankton's Pet 036.pngPlankton's Pet 124.png
186b
"Plankton's Pet" (tr) Major; she gives Plankton the idea to get a pet.
Screen Shot 2019-04-05 at 3.06.10 PM.png
192a
"Company Picnic" (tr) Deleted scene, credited in voice cast
Mall Girl Pearl 070.png
197a
"Mall Girl Pearl" (tr) Cameo (non-speaking); she is at the mall on the top floor.
CopyBob DittoPants 077.png
198b
"CopyBob DittoPants" (tr) Supporting; she has a party with SpongeBob and Plankton, then tries to help teach the SpongeCopies.
SpongeBob SquarePants Karen the Computer Hairnet-2.png
199b
"Lame and Fortune" (tr) Major; she makes the fortune cookies and calms down the crowd.
Pineapple Invasion 002.png
203a
"Pineapple Invasion" (tr) Minor; she gives Plankton a push.
Salsa Imbecilicus 045.png
203b
"Salsa Imbecilicus" (tr) Major; she and Sandy team up to help make the town smart again.
Season 10
Mimic-Madness-Karen-deleted-scene.png
207a
"Mimic Madness" (tr) Deleted scene;[3] 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 116.png
209b
"Plankton Gets the Boot" (tr) Major; she kicks Plankton out of the Chum Bucket and he tries to make her jealous.
Plankton Retires 075.png
211a
"Plankton Retires" (tr) Supporting; she consoles Plankton after his failure.
The Incredible Shrinking Sponge 126.png
212a
"The Incredible Shrinking Sponge" (tr) Minor; she scans SpongeBob and flicks him away.
Karen in Feral Friends deleted scene.png
215a
"Feral Friends" (tr) Deleted scene;[4] in the rough storyboard, she gave Plankton his food when he got turned into a feral copepod.
Don't Wake Patrick 090.png
215b
"Don't Wake Patrick" (tr) Cameo (wall form); Karen's wall form is seen in the corner of the Chum Bucket.
Season 11
Spot Returns 188.png
217a
"Spot Returns" (tr) Major; she has a "cute overload" from all the puppies.
Spin the Bottle 006.png
218a
"Spin the Bottle" (tr) Supporting; she asks Plankton about his genie scheme.
The Legend of Boo-Kini Bottom 115.png
220
"The Legend of Boo-Kini Bottom" (tr) Supporting; she puts on a show about the horrors of the Krusty Krab.
Krabby Patty Creature Feature 151.png
222a
"Krabby Patty Creature Feature" (tr) Minor; she gets infected by the patties.
Grandmum's The Word 036.png
228b
"Grandmum's the Word" (tr) Supporting; she and Plankton try to have a date when Plankton's grandma interrupts it.
Bottle Burglars 130.png
230b
"Bottle Burglars" (tr) Supporting; Karen is proud of Plankton, and later, she sleepwalks and scares SpongeBob.
Shopping List 196.png
232b
"Shopping List" (tr) Minor; Karen is a chef and tells Plankton not to add the last ingredient.
Patnocchio 170.png
234a
"Patnocchio" (tr) Narrates episode; she plays a computer fairy who tells the story of Patnocchio.
Karen's Virus 152.png
238b
"Karen's Virus" (tr) Major; she gets a virus, and Plankton and SpongeBob have to journey into her hard drive to get it out.
Girls' Night Out 170.png
240b
"Girls' Night Out" (tr) Major; she is one of the Gal Pals.
Season 12
Gary & Spot 048.png
242b
"Gary & Spot" (tr) Minor; she sleeps while Spot escapes.
King Plankton 019.png
245b
"King Plankton" (tr) Supporting; she offers to watch SpongeBob's sea chimps for the day.
Plankton's Old Chum 015.png
246a
"Plankton's Old Chum" (tr) Supporting; she tells Plankton to throw out his old chum.
The Krusty Bucket 036.png
248a
"The Krusty Bucket" (tr) Minor; she watches the creation of PlanKrab.
Karen's Baby 073.png
250b
"Karen's Baby" (tr) Major; she orders a baby computer in the mail.
SpongeBob's Big Birthday Blowout 448.png
254-255
"SpongeBob's Big Birthday Blowout" (tr) Minor; she and Plankton dance at the party.
The Ghost of Plankton 155.png
259a
"The Ghost of Plankton" (tr) Supporting; Karen puts on a funeral for Plankton when he is thought to be dead.
My Two Krabses 088.png
259b
"My Two Krabses" (tr) Minor; she brings out some chum to make Chum Krabs.
Karen in Hiccup Plague.jpg
261b
"Hiccup Plague" (tr) Minor; she catches a hiccup bubble, but shortly after gets rid of it.
A Cabin in the Kelp 129.png
262a
"A Cabin in the Kelp" (tr) Major; she is one of the Gal Pals.
The Hankering 200.png
262b
"The Hankering" (tr) Supporting; she analyzes Mr. Krabs to find Plankton inside.
Who R Zoo 165.png
263a
"Who R Zoo?" (tr) Minor; she and Plankton are scared by bubble penguins.
Plankton's Intern 04.png
264a
"Plankton's Intern" (tr) Minor; she leaves for vacation and later returns.
Season 13
Lockdown For Love 076.png
"Lockdown For Love" (tr) Major

Movies

Image # Title Role in episode
The SpongeBob SquarePants Movie 070.pngThe SpongeBob SquarePants Movie 728.png
F1
"The SpongeBob SquarePants Movie" (tr) 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 434.pngThe SpongeBob Movie Sponge Out of Water 455.png
F2
"The SpongeBob Movie: Sponge Out of Water" (tr) Supporting; she helps Plankton and later powers the time machine.
Sponge-on-the-Run-Karen.png
F3
"The SpongeBob Movie: Sponge on the Run" (tr) TBD.

Video games

Title Role(s) in game
PC and console games
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
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 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!
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

Books

Title Role(s) 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 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

Comics

Image Issue Comic(s)
Comics-4-Karen-family.jpg SpongeBob Comics No. 4 A Plankton Family Tree
Comics-3-Karen-says-sure.jpg SpongeBob Comics No. 5 Truckin'!
Comics-6-Plankton-and-Karen.jpg SpongeBob Comics No. 6 Bikini Bottom 2
Comics-8-Karen-wall-form.jpg SpongeBob Comics No. 8 Formula for Success
Comics-14-Plankton-talks-to-Karen.jpg SpongeBob Comics No. 14 Dream a Patty Dream
One Night at the Chum Bucket
Plankton's Last Laff
Comics-20-Karen-has-a-present.jpg SpongeBob Comics No. 20 Tiny Tales
Comics-21-Plankton-compliments-Karen.jpg SpongeBob Comics No. 21 Eye of the Beholder
Comics-35-Karen-thesaurus.jpg SpongeBob Comics No. 35 Plankton's Petulant Protests
Comics-44-Mr-Krabs-sneaks-past-Karen.jpg SpongeBob Comics No. 44 Spongefellas
TBA.png SpongeBob Comics No. 50 Cover
50! 50! 50! (pictured)
Comics-53-Karen-explains-SpongeBob.jpg SpongeBob Comics No. 53 Seaquake!
Comics-54-talking-to-Karen.jpg SpongeBob Comics No. 54 Only the Clonely
Comics-56-Karen-roasts-Plankton.jpg SpongeBob Comics No. 56 Plankton vs. Gary
TBA.png SpongeBob Comics No. 58 Inside back cover
Comics-59-Karen-up-close.jpg SpongeBob Comics No. 59 Cover
Dry Noon
TBA.png SpongeBob Comics No. 71 Shhhh!
TBA.png SpongeBob Comics No. 72 Plankton at Home
TBA.png SpongeBob Comics No. 79 A Crosshatch of Despair
TBA.png SpongeBob Comics No. 81 The Inner Journey!
TBA.png SpongeBob Comics No. 82 Cover
TBA.png SpongeBob Comics No. 83 Inside front cover
The Goop, the Bad, and the Chummy!
Plankton's Country Cousin
SpongeFunnies
Dialogue mention SpongeBob Comics Annual Super-Giant Swimtacular No. 3 The Consumer Is Always Right (mentioned)
Season 13
N/A
"Lockdown For Love" (tr) TBD

Miscellaneous

References

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