Dexter's Laboratory title

Dexter's Laboratory

The following is a list of episodes of Dexter's Laboratory. This is an animated television series created by Genndy Tartakovsky for Cartoon Network. Initially debuting on February 26, 1995, as a seven-minute World Premiere Toons pilot, it was expanded into a full series after gaining network approval. The first season, which consists of 13 episodes divided into three segments each, premiered on TNT on March 24, 1996, and TBS on April 14, 1996 and later Cartoon Network on April 28. A second season of 39 episodes followed in 1997. In this season, Allison Moore, the voice actor for Dee Dee, was replaced by Kathryn Cressida. "Last but Not Beast", the second season finale, was originally supposed to conclude the series in 1998. However, Tartakovsky directed a television movie titled Dexter's Laboratory: Ego Trip which aired on Cartoon Network on December 10, 1999. He left the series after the movie, focusing on his other projects, Samurai Jack and Star Wars: Clone Wars.

Production on a third season began in 2001 with Chris Savino taking over as creative director and later producer. It premiered on November 16, 2001, during Cartoon Network's "Dexter Goes Global" marathon. The third season episode "Poppa Wheely/A Mom Cartoon/The Mock Side of the Moon" is the first to feature Christine Cavanaugh's replacement Candi Milo as the voice of Dexter. Milo would voice the character from the next episode onward, with the exceptions of "Tele Trauma". A fourth and final season consisting of 13 episodes aired from November 22, 2002, to November 20, 2003. In total there have been 78 episodes and a television movie across 4 seasons. Also released was a controversial unaired episode called "Rude Removal", which was originally only shown at certain comic conventions. The segment was later picked up by Adult Swim and released to the public on January 22, 2013, online.

Pilots (1995-1996)

# Title Directed by Original air date Production Code Network
1 Dexter's Laboratory Genndy Tartakovsky February 26, 1995 01 Cartoon Network
2 The Big Sister Genndy Tartakovsky March 10, 1996 02 Cartoon Network
3 Old Man Dexter Craig McCracken and Genndy Tartakovsky March 24, 1996 03 TNT
4 Dumb Like Dee Dee Genndy Tartakovsky April 14, 1996 04 TBS

Original series (1996-1998)

Season 1 (1996-1997)

No. in
No. in
Title Airdate Production
1 1 DeeDeemensional April 27, 1996 102a TNT
When Dexter becomes a victim of one of his inventions, Dee Dee goes back in time by one hour to warn Dexter's past self about the invention's consequences, but the past Dexter proves hard to convince until he sees two Dee Dees.
Absent: Mom, Dad and Mandark
Magmanamus April 27, 1996 102b TNT
Monkey must defend the city from a giant lava monster, Magmanamus, who is wrecking it as the noise created by its residents is not allowing him to sleep.
Absent: Dexter, Dee Dee, Mom, Dad and Mandark
Maternal Combat April 27, 1996 102c TNT
When his mother falls ill, Dexter creates a Mom-Droid to do her chores. However, Dee Dee gets hold of the robot's remote control and wreaks havoc, forcing Dexter to create another Mom-Droid to counter Dee Dee and her Mom-Droid.
Absent: Mandark
2 2 Dexter Dodgeball May 4, 1996 103a TNT
Dexter is forced to play dodgeball by his P. E. teacher, but after constantly losing, he builds a robotic exoskeleton to protect himself.
Absent: Mom, Dad and Mandark
Rasslor May 4, 1996 103b TNT
Intergalactic wrestling champion Rasslor challenges all of the Earth's superheroes, including Monkey, with the very future of the Earth at stake.
Absent: Dexter, Dee Dee, Mom, Dad and Mandark
Dexter's Assistant May 4, 1996 103c TNT
In need of an assistant to operate his latest invention for the science fair, Dexter performs a brain transplant on Dee Dee to make her smart enough to fulfill the role. Unfortunately, Dee Dee, with her new brain, proves to be more intelligent than Dexter, much to his chagrin.
Absent: Mom, Dad and Mandark
3 3 Dexter's Rival May 11, 1996 101a/112a TNT
A new student named Mandark Astronomonov enrolls at Dexter's school and quickly turns out to be better than Dexter academically. He even forces Dexter to shut down his lab so that his lab (which is much bigger than Dexter's lab) can gain more power. A hurt Dexter then teams up with Dee Dee to take revenge on Mandark.
Absent: Mom and Dad
Simion May 11, 1996 101b TNT
Monkey encounters an intelligent anthropomorphic chimpanzee named Simion, who plans to take revenge on humans for turning him into his current state.
Absent: Dexter, Dee Dee, Mom, Dad and Mandark
Old Man Dexter May 11, 1996 101c TNT
After Dexter is not allowed from watching The Late Early Movie due to his age, he decides to accelerate his age, but Dee Dee tampers with the age acceleration process, causing him to turn into a 95-year old man.
Absent: Mandark
4 4 Double Trouble May 18, 1996 105a TNT
Dee Dee and her friends, Lee Lee and Mee Mee, enter Dexter's lab and create havoc, forcing Dexter to clone himself to stop them. However, this fails as the girls too clone themselves multiple times, causing more mayhem.
Absent: Mandark
Barbequor May 18, 1996 105b TNT
Monkey's birthday party is interrupted by intergalactic villain Barbequor (Robert Ridgely), who plans to eat the Earth for his next meal, and his sidekick, the Silver Spooner.
Absent: Dexter, Dee Dee, Mom, Dad and Mandark
Dexter's Laboratory May 18, 1996 105c TNT
Dexter and Dee Dee test the former's latest invention: a device that turns people into animals, which yields crazy results.
Absent: Dad and Mandark
5 5 Jurassic Pooch May 25, 1996 106a TNT
Dexter uses his dog's heart and brain to make up for missing dinosaur DNA taken from a granite sample. His newly cloned dinosaur acts like a dog, and Dee Dee treats it like a large pet.
Absent: Mandark
Orgon Grindor May 25, 1996 106b TNT
While on a date with Agent Honeydew, Monkey gets hypnotized by the music of an alien named Organ Grindor, who then commands him to steal the gold at Fort Knox.
Absent: Dexter, Dee Dee, Mom, Dad and Mandark
Dimwit Dexter May 25, 1996 106c TNT
Dexter cracks due to overwork and starts acting idiotic, which makes him the butt of jokes among Dee Dee and the entire neighborhood.
Absent: Mom, Dad and Mandark
6 6 Dee Dee's Room June 1, 1996 104a TNT
After finding out that his critical invention has been stolen by Dee Dee, Dexter ventures into her room to find it.
Absent: Mom, Dad and Mandark
Huntor June 1, 1996 104b TNT
Monkey encounters an alien hunter named Huntor and must fight him before Agent Honeydew and Commander Chief are killed.
Absent: Dexter, Dee Dee, Mom, Dad and Mandark
The Big Sister June 1, 1996 104c TNT
When Dee Dee eats an experimental cookie of Dexter's design, she grow into a giant and makes the city her dollhouse. As she destroys the whole city, it's up to Dexter to pilot his giant Robo-Dexo 2000 mecha and bring her back.
Absent: Dad and Mandark
7 7 Star Spangled Sidekicks November 20, 1996 107a Cartoon Network
Dexter and Dee Dee enter tryouts to become Major Glory's next sidekick. When Dee Dee wins, Dexter realizes that fancy costumes are not the only criterion to become a superhero.
Absent: Dad and Mandark
TV Super Pals November 20, 1996 107b Cartoon Network
With only one television in their apartment, Major Glory, Krunk and Valhallen cannot decide what to watch: Major Glory's televised capture of the Disgruntled Postman, TV Puppet Pals or the monster truck pull.
Absent: Dexter, Dee Dee, Mom, Dad and Mandark
Game Over November 20, 1996 107c Cartoon Network
Dexter and Dee Dee's father buys a video game for them to play, but the game sucks Dexter inside when he plugs in the cartridge, and it is up to Dee Dee to get him out.
Absent: Dexter, Dee Dee, Mom and Mandark
8 8 Babysitter Blues November 27, 1996 108a Cartoon Network
Dexter has a crush on his teenage babysitter Lisa. When he finds out that she has a boyfriend, he sabotages their relationship and accelerates his age by ten years to win her heart, only to get knocked out by her boyfriend, who thinks that Lisa dumped him for the "teenage" Dexter, when he comes over.
Absent: Mandark
Valhallen's Room November 27, 1996 108b Cartoon Network
Valhallen loses his magic ax and starts turning into a nerd, forcing Major Glory and Krunk to enter his room to find it.
Absent: Dexter, Dee Dee, Mom, Dad and Mandark
Dream Machine November 27, 1996 108c Cartoon Network
When Dexter's nightmares become frequent and problematic, he invents a machine which will allow him to have only good dreams, as long as Dee Dee can operate it properly while she is awake. Things turn bad when Dee Dee falls asleep.
Absent: Mom, Dad and Mandark
9 9 Dollhouse Drama December 4, 1996 111a Cartoon Network
Suspicious that Dee Dee has not entered his lab even once on a particular day, Dexter shrinks himself and enters her room to spy on her to see what is she doing. He soon becomes an unwilling character in Dee Dee's doll story, but believes the story to be real, due to the shrinking's side effect that makes him confuse reality and fantasy.
Absent: Dad and Mandark
Krunk's Date December 4, 1996 111b Cartoon Network
While the Justice Friends are fighting Comrade Red and his gang (the communist equivalent of the Justice Friends), Krunk falls in love with his equivalent in their gang, She-Thing.
Absent: Dexter, Dee Dee, Mom, Dad and Mandark
The Big Cheese December 4, 1996 111c Cartoon Network
Dexter invents a device that will allow him to learn for the next day's French test while he is asleep, but it malfunctions, causing it to repeat only a single phrase: Omelette du fromage (which is an incorrect and meaningless translation of cheese omelette) throughout the night. As a result, he wakes up in the morning speaking nothing else but Omelette du fromage. Strangely, this makes him a celebrity overnight, although when he tries to enter his lab later, he is unable to say the password, causing his lab to self-destruct as a security measure.
Absent: Dad and Mandark
10 10 Way of the Dee Dee December 11, 1996 109a Cartoon Network
Dee Dee teaches Dexter how to live life her way instead of being lonely and purely focused on science, but regrets her decision after he becomes more carefree than her.
Absent: Mom, Dad and Mandark
Say Uncle Sam December 11, 1996 109b Cartoon Network
Major Glory forces Krunk and Valhallen to tidy up their apartment for his Uncle Sam, who is coming over for a visit to Glory.
Absent: Dexter, Dee Dee, Mom, Dad and Mandark
Tribe Called Girl December 11, 1996 109c Cartoon Network
To learn more about girls, Dexter camouflages himself and enters Dee Dee's room, where she is having a sleepover with her friends Lee Lee and Mee Mee. However, he gets caught by the girls, who then force him to take part in their activities.
Absent: Dad and Mandark
11 11 Spacecase December 18, 1996 110a Cartoon Network
To prevent himself from being taken away by aliens for experimentation, Dexter sends Dee Dee with them under the pretext that they are taking her to Candyland; however, he quickly regrets his decision after realizing how much he cares for her.
Absent: Mandark
Ratman December 18, 1996 110b Cartoon Network
While trying to fix their apartment's plumbing, Krunk and Valhallen go down to the basement, where they meet Ratman, a diminutive vigilante raised by rats (a parody of Batman).
Absent: Dexter, Dee Dee, Mom, Dad and Mandark
Dexter's Debt December 18, 1996 110c Cartoon Network
Dexter's lab is threatened with repossession unless he can repay his debt of a record of $200,000,000 to NASA, as they are monitoring his lab. When Dee Dee wins the same amount in a lottery, he decides to steal her money out of desperation, but Dee Dee realizes the whole ordeal and agrees to help Dexter pay NASA back if he shares his lab with her in return.
Absent: Mandark
12 12 Bee Where? December 25, 1996 112b Cartoon Network
Major Glory, Krunk, and Valhallen try to rid their apartment of a bee, but they end up being thrown out of the apartment by the bee.
Absent: Dexter, Dee Dee, Mom, Dad and Mandark
Mandarker December 25, 1996 112c Cartoon Network
Following the destruction of his lab by Dexter and Dee Dee (from "Dexter's Rival"), Mandark turns to magic to beat Dexter at the science fair.
Absent: Mom and Dad
13 13 Inflata Dee Dee January 1, 1997 113a Cartoon Network
Dee Dee inflates Dexter's hydro-plasmatic suit and constantly floats in the air, prompting Dexter to try and bring her down.
Absent: Mom, Dad and Mandark
Can't Nap January 1, 1997 113b Cartoon Network
After fellow Justice Friend White Tiger helps Valhallen stop a super-villain, the latter invites him to spend the night in his apartment, forgetting that Major Glory is allergic to cats.
Absent: Dexter, Dee Dee, Mom, Dad and Mandark
Monstory January 1, 1997 113c Cartoon Network
Not interested in hearing Dee Dee's long-winded story, Dexter gives her a silencing formula to keep her quiet. To his horror, he finds out that the formula he gave her turned her into a giant monster, who is still bent on telling her story. When he realizes that nothing can make her quiet, he decides to become a giant monster himself. Dexter's giant monster form looks like Godzilla and Dee Dee's giant monster form looks like an alien type giant monster.
Absent: Mom, Dad and Mandark

Season 2 (1997-1998)

No. in
No. in
Title Airdate Production
14 1 Beard to Be Feared July 16, 1997 201a 34-5418 Cartoon Network
After watching an Action Hank movie on television, Dexter grows a beard like him to try to be cool, but is soon mistaken by the police for Action Hank himself.
Quackor the Fowl July 16, 1997 201b 34-5406 Cartoon Network
Mandark decides to bring his lab duck Quackor for show and tell to counter Dexter and his lab monkey. Despite the fact that neither creature displays anything remarkable at school, Quackor is actually a supervillain going by the name of Quackor the Fowl, a fact not known to Mandark, similar to how Dexter is unaware that his lab monkey is a superhero.
Ant Pants July 16, 1997 201c 34-5401 Cartoon Network
When Dexter catches Dee Dee killing some ants, he shrinks themselves to ant-size to take her inside an ant colony so that she can learn how organized the ants are. However, he eventually learns that though the ants are indeed organized, they are very nasty in behavior.
15 2 Mom and Jerry July 23, 1997 202a 34-5417 Cartoon Network
Dexter accidentally switches his brain with that of a mouse's and must avoid his mother when she decides to exterminate him.
Chubby Cheese July 23, 1997 202b 34-5403 Cartoon Network
While out for dinner at the Chubby Cheese pizza restaurant, Dexter tries to slow down the "Whack the Weasel" machine to win a stuffed Monkey doll before Dee Dee does. When he gets captured by security for tampering with the machine, he falls into the hands of a mad scientist who seeks to use him as his assistant.
That Crazy Robot July 23, 1997 202c 34-5409 Cartoon Network
One of Dexter's robots becomes Dee Dee's servant when she removes a wrench that froze him up and tries to destroy anyone who is mean to Dee Dee, including her friends, her mother and Dexter himself.
16 3 D & DD July 30, 1997 203a 34-5405 Cartoon Network
When Dexter's friends become completely tired of Dexter's complicated traps he sets up as Game Master (as well as his cheating) while playing a RPG game, they put Dee Dee as Game Master in his place. She completely changes the style of play, which annoys Dexter but impresses his friends.
Hamhocks and Armlocks July 30, 1997 203b 34-5416 Cartoon Network
Dexter's father is challenged to an arm wrestling match by a man named Earl at a truck stop. Stunned at the strength of Earl and his determination to beat his father, Dexter attaches a robotic arm to his father to enable him to win.
17 4 Hunger Strikes August 6, 1997 204a 34-5413 Cartoon Network
After being denied dessert by his parents for not eating his vegetables, Dexter uses radiation therapy so that he can like them, but it causes a severe side effect that turns him into an Incredible Hulk-like character if he goes too long without them.
The Koos Is Loose August 6, 1997 204b 34-5420 Cartoon Network
Dee Dee's imaginary friend Koosalagoopagoop (Dom DeLuise) suddenly comes to life and starts annoying Dexter.
Morning Stretch August 6, 1997 204c 34-5422 Cartoon Network
After staying up late at his lab, Dexter oversleeps and wakes up one minute before the school bus arrives. With no time to do his morning chores and homework, he pulls out a secret prototype device, which will convert his last 30 seconds into 30 minutes. unaware that the school has been closed due to a snowdown.
18 5 Dee Dee Locks and the Ness Monster August 13, 1997 206a 34-5426 Cartoon Network
Dexter's mother asks him to read a story to Dee Dee, who is sick. However, Dee Dee becomes bored of Dexter's story and invents her own story, Dee Dee Locks and the Loch Ness Monster, which is a spoof of Goldilocks and the Three Bears.
Backfire August 13, 1997 206b 34-5425 Cartoon Network
Dexter tries to supe up the family car with anti-matter in an attempt to shorten road trips with his family due to Dee Dee's annoying nature, but ends up accidentally fusing Dee Dee with the car, causing mayhem.
Book 'Em August 13, 1997 206c 34-5423 Cartoon Network
When Dee Dee causes Dexter to take a book from the library without checking it out by mistake, they sneak into the library at night to put it back without getting caught, but when Dee Dee's antics cause Dexter to scream at her to keep quiet, they get caught anyway.
19 6 Sister's Got a Brand New Bag August 20, 1997 207a 34-5428 Cartoon Network
Dee Dee's new dance moves annoy Dexter to no end.
Shoo, Shoe Gnomes August 20, 1997 207b 34-5414 Cartoon Network
Dexter calls upon the "shoe gnomes" to repair his shoes, but cannot rid himself of them afterwards. He has to seek Dee Dee's help whose knowledge of the gnomes is vital to getting rid of them.
Lab of the Lost August 20, 1997 207c 34-5402 Cartoon Network
Following a mishap in his lab, Dexter ends up in the old, long-abandoned part of the lab, and discovers his early inventions, which are unhappy to see him as he had neglected them.
20 7 Labels August 27, 1997 205a 34-5429 Cartoon Network
Dee Dee starts to take anything that belongs to Dexter, claiming that it "doesn't have his name on it", forcing him to invent a label-making gun to make sure his things do have a name on him.
Game Show August 27, 1997 205b 34-5412 Cartoon Network
Dexter and Dee Dee compete against each other on a game show.
Fantastic Boyage August 27, 1997 205c 34-5424 Cartoon Network
Dexter tries to inject himself into an ill Dee Dee to find a cure to the common cold, but accidentally ends up inside his dog, subsequently believing that Dee Dee is infected with a dog virus. When the veterinarian comes in, he finds Dexter, believing that Dexter is the new virus and shows him to the medical community.
21 8 Filet of Soul September 3, 1997 208a 34-5408 Cartoon Network
Dexter and Dee Dee refuse to flush their dead goldfish into the toilet, and are later haunted by its spirit.
Golden Diskette September 3, 1997 208b 34-5412 Cartoon Network
Dee Dee wins a golden diskette, earning her a free trip to the laboratory of Professor Hawk (Tom Kenny). Her behavior there frees Hawk from his robotic body, and it leaves Hawk impressed with her spirit.
22 9 Snowdown September 10, 1997 210a 34-5415 Cartoon Network
When Dexter becomes the constant victim of Dee Dee's snowballs, their father teaches him to be the snowball terror that he used to be in his youth. However, it is later revealed that Dee Dee learned her snowball skills from her mother, who was a bigger snowball terror than her husband.
Figure Not Included September 10, 1997 210b 34-5411 Cartoon Network
Dexter makes his own Major Glory action figures so that he can join the neighborhood's Major Glory gang, but gets into serious trouble when the rest of the gang find out that none of his action figures are original.
Mock 5 September 10, 1997 210c 34-5407 Cartoon Network
Dexter participates in the "Annual Soapbox Derby down Volcano Mountain".
23 10 Ewww That's Growth September 17, 1997 209a 34-5427 Cartoon Network
Unable to ride in a roller coaster due to his height, Dexter creates a device to make himself taller than he actually is, but the device malfunctions and he grows so tall that his face gets rammed by the top edge of the roller coaster's tunnel.
Nuclear Confusion September 17, 1997 209b 34-5421 Cartoon Network
Dee Dee hides the core of Dexter's nuclear lamp and he must decipher her clues to find it within one hour after which it would explode, destroying the Earth with it.
Germ Warfare September 17, 1997 209c 34-5434 Cartoon Network
When his entire family is suffering from the flu, Dexter tries his best to not acquire the illness, but his efforts are thwarted by a sick Dee Dee's presence in his lab and he ends up with the flu anyway.
24 11 A Hard Day's Day September 24, 1997 212a 34-5430 Cartoon Network
Dexter tries to move the Moon, which is blocking Saturn and its "science waves" (which is what makes it a "good day for science"). Unfortunately for him, he brings the Moon to the Earth, destroying his lab.
Road Rash September 24, 1997 212b 34-5436 Cartoon Network
Dexter's parents get him a bike for exercise, but he's unable to catch Dee Dee on her inline skates.
Ocean Commotion September 24, 1997 212c 34-5419 Cartoon Network
Dexter's family goes to the beach, where Dexter tries to communicate with whales, and must rescue Dee Dee (dressed as a mermaid), when she is captured by manic pirates.
25 12 The Bus Boy October 1, 1997 213a 34-5442 Cartoon Network
A couple of girls push one of Dexter's pencils into the back of the school bus. Dexter goes to retrieve it; however, a legend says that no one has ever returned from the back of the bus, and Dexter has to find ways to "rescue" himself.
Things That Go Bonk in the Night October 1, 1997 213b 34-5435 Cartoon Network
After a Puppet Pals marathon, Krunk dreams the Puppet Pals are attacking puppet versions of Major Glory and Valhallen.
Ol' McDexter October 1, 1997 213c 34-5438 Cartoon Network
Dexter is disappointed when he ends up at an Amish farm instead of a high-tech farm for summer camp. His subsequent attempts to modernize the Amish family do not go down well with them.
26 13 Sassy Come Home October 8, 1997 211a 34-5439 Cartoon Network
During a camping trip, Dee Dee befriends a sasquatch due to their huge feet and they have to contend with Dexter, who is determined to capture the sasquatch.
Photo Finish October 8, 1997 211b 34-5433 Cartoon Network
When Dee Dee takes photographs of his lab, Dexter goes on an adventure to retrieve the photos before his parents see them.
27 14 Star Check Unconventional October 15, 1997 214a 34-5432 Cartoon Network
Dexter and his friends try to escape a Darbie doll convention where they arrived because they were not paying attention to where they were going, while dressed as "Star Check" characters, a spoof of Star Trek.
Dexter Is Dirty October 15, 1997 214b 34-5447 Cartoon Network
Tired of bathing, Dexter laminates himself to keep himself clean.
Ice Cream Scream October 15, 1997 214c 34-5449 Cartoon Network
Dexter cannot get the ice cream truck to stop for him following an incident where he paid for his ice-cream in pennies to the driver, and creates a series of disasters to stop him.
28 15 Decode of Honor October 22, 1997 215a 34-5437 Cartoon Network
Dexter and Dee Dee's secret decoder rings hold the keys to joining the Action Hanks and Pony Puff fan clubs respectively, but they interchange the clues by mistake, causing them to switch clubs.
World's Greatest Mom October 22, 1997 215b 34-5443 Cartoon Network
Dexter accidentally gives his mother superpowers, when she is hit by a ray of energy. She does not even notice that she has superpowers, but acts like a superhero.
Ultrajerk 2000 October 22, 1997 215c 34-5445 Cartoon Network
Dexter creates a new robot Ultramark 2000 to assist him, but when the robot starts controlling his lab and tries to destroy Dexter, he must find a way to destroy it.
29 16 Techno Turtle October 29, 1997 217a 34-5441 Cartoon Network
When a turtle Dee Dee has befriended gets severely injured, Dexter not only heals it, but also makes it more powerful by giving it bionic limbs, super-hearing and a super-strong shell.
Surprise! October 29, 1997 217b 34-5451 Cartoon Network
On his birthday, Dexter makes himself invisible so that he can find out whether his parents have bought him the Major Glory action figure he always wanted.
Got Your Goat October 29, 1997 217c 34-5444 Cartoon Network
Dexter and Dee Dee go to South America to catch the legendary chupacabra, which is actually one of Dexter's early experiments that had escaped, though he has forgotten why he had created him.
30 17 Dee Dee Be Deep November 5, 1997 218a 34-5454 Cartoon Network
Dexter is tired of Dee Dee's bad singing, so he tries to "improve" her singing by transforming her voice to a beautiful one, but ends up giving her a baritone voice, which is even more annoying.
911 November 5, 1997 218b 34-5446 Cartoon Network
When an Action Hank episode is interrupted by the Emergency Broadcast System, Dexter sets about fixing any emergencies in the neighborhood, hoping to make the signal go away. However, Dee Dee uses her imagination, which works well by the time the Emergency Broadcast System ends.
Down in the Dumps November 5, 1997 218c 34-5456 Cartoon Network
In a fit of rage, Dexter dumps Dee Dee's favorite teddy bear, Mr. Fuzzums, into the garbage. As a result, an upset Dee Dee begins to behave oddly, prompting Dexter to go to the garbage dump and get back Mr. Fuzzums.
31 18 Unfortunate Cookie November 12, 1997 216a 34-5440 Cartoon Network
Dexter and Dee Dee must travel to Chinatown to get their fingers unstuck from a Chinese finger puzzle, but this is made difficult due to their constant bickering.
The Muffin King November 12, 1997 216b 34-5450 Cartoon Network
Dexter and Dee Dee must protect their mother's muffins from their muffin-loving father while she is out shopping.
32 19 Picture Day November 19, 1997 221a 34-5455 Cartoon Network
Dexter is upset that Dee Dee is more photogenic than him, so he transforms his face into a handsome one for his next Picture Day, but the face melts during the photo shoot, which makes Dexter look uglier in the yearbook.
Now That's a Stretch November 19, 1997 221b 34-5453 Cartoon Network
Dexter cannot reach anything in his lab, so he makes himself more flexible by combining himself with bubble gum.
Dexter Detention November 19, 1997 221c 34-5431 Cartoon Network
Dexter is given detention after accidentally shouting out the answer to a test question to his classmate. When he and the other students try to escape from the detention room run by a fierce retired warden, they end up in a state prison.
33 20 Don't Be a Baby November 26, 1997 220a 34-5457 Cartoon Network
Dexter tries to make himself and Dee Dee older in order to see an R-rated movie, but due to an accidental mishap by Dee Dee, he makes everybody else (except him and Dee Dee) babies instead.
Peltra November 26, 1997 220b 34-5458 Cartoon Network
Peltra wants to turn Monkey into a fur coat.
G.I.R.L. Squad November 26, 1997 220c 34-5459 Cartoon Network
After a crime prevention talk at school, Dee Dee, Lee Lee, and Mee Mee become crime fighters, calling themselves the G.I.R.L. Squad. However, they unintentionally end up being neighborhood criminals themselves.
34 21 Sports a Poppin December 3, 1997 219a 34-5463 Cartoon Network
Dexter's father tries to teach his son sports, but after realizing that Dexter is not athletic, he gives up.
Koosalagoopagoop December 3, 1997 219b 34-5462 Cartoon Network
Dee Dee enters the land of her imaginary friend Koosalagoopagoop after he lies to her that he is the king of his land.
Project Dee Dee December 3, 1997 219c 34-5460 Cartoon Network
When Dexter learns that Dee Dee is trying to make a science project alone, he decides to help her, but she does not want his help. She ends up getting Dexter's help, but her resulting project propels the entire school into space.
35 22 Topped Off January 14, 1998 222a 34-5465 Cartoon Network
Dexter and Dee Dee experiment with coffee after seeing how it energizes their parents and soon become addicted to it.
Dee Dee's Tail January 14, 1998 222b 34-5464 Cartoon Network
Dexter transforms Dee Dee into a horse after she expresses her desire to become a Pony Puff Princess. However, Dexter, Lee Lee and Mee Mee try to exploit her, forcing the Pony Puff Princess to intervene in support of Dee Dee.
No Power Trip January 14, 1998 222c 34-5466 Cartoon Network
Despite warnings from the computer, Dexter consumes too much power while performing numerous experiments, causing his lab to shut down. He then tries numerous methods to restore power to his lab.
36 23 Sister Mom January 21, 1998 224a 34-5461 Cartoon Network
When Dexter is asked to bring his mother to the school, he disguises Dee Dee as her so that she can take her place, but she, unfortunately, does not behave like their mother.
The Laughing January 21, 1998 224b 34-5452 Cartoon Network
Dexter is bitten by a clown's dentures during Dee Dee's birthday party, causing him to turn into a mad clown every night, terrorizing the town with his mayhem, and only Dee Dee, who knows mime, can stop him. Despite Dee Dee saving the day, Dexter's ungrateful ego tells her that he would have saved himself eventually without her help. Dee Dee traps her ungrateful brother in a mime box.
37 24 Dexter's Lab: A Story January 28, 1998 223a 34-5467 Cartoon Network
Dexter finds a lost Labrador Retriever, but when he teaches the dog to speak human language, he turns out to be very annoying, prompting him to find the dog's actual owner.
Coupon for Craziness January 28, 1998 223b 34-5476 Cartoon Network
Dexter finds the exact opposite of his family, a hyperactive boy who is like Dee Dee and has scientist parents who are like Dexter. Sensing to fit in, he switches places with the boy. Soon enough, Dexter's "new" family starts to annoy him, prompting him to return to his "old" family.
Better Off Wet January 28, 1998 223c 34-5468 Cartoon Network
Dexter tries to avoid being pushed into the family's new swimming pool by his father, since he cannot swim and is afraid of water.
38 25 Critical Gas February 4, 1998 225a 34-5474 Cartoon Network
After Dexter orders and eats a giant burrito, he suffers severe stomach pains. Believing a test the computer gave him, he assumes that he has only 30 minutes to live. Therefore, he sets about doing things he usually doesn't do before he "dies", such as being nice to Dee Dee and giving her unrestricted access to his lab. He even decides to reveal about his lab to his parents, but as he is about to do so just before the 30 minutes are up, he does not "die", but farts so loudly that it smashes the TV behind him and can be heard all over the world.
Let's Save the World You Jerk! February 4, 1998 225b 34-5473 Cartoon Network
Dexter and Mandark team up to fight asteroids that are heading towards the Earth. However, due to their constant bickering, the asteroids end up destroying the Earth anyway.
Average Joe February 4, 1998 225c 34-5470 Cartoon Network
An intelligence test grades Dexter as average, which makes him upset. As a result, he shuts down his lab and tries to live life like a normal kid. By the end of the episode though, it is revealed that there was a mistake and Dexter is graded as a genius.
39 26 Rushmore Rumble February 11, 1998 226a 34-5472 Cartoon Network
Dexter and Mandark bring the Abraham Lincoln and George Washington faces respectively on Mount Rushmore to life and make them fight each other to determine who is the best.
A Boy and His Bug February 11, 1998 226b 34-5471 Cartoon Network
When Dexter neglects his pet bug, which he created to devour the things metal that Dee Dee destroys, it begins eating his lab as a revenge against Dexter, and Dexter needs to find a way to stop the bug before it eats his entire lab.
You Vegetabelieve It! February 11, 1998 226c 34-5475 Cartoon Network
Dexter's growth formula causes the plants in the garden to grow to an enormous size.
40 27 Aye Aye Eyes February 18, 1998 227a 34-5448 Cartoon Network
A little girl with big eyes falls in love with Dexter and follows him everywhere after he returns a toy she dropped earlier, much to his chagrin.
Dee Dee and the Man February 18, 1998 227b 34-5479 Cartoon Network
Dexter "fires" Dee Dee, only to realize that the chaos she causes has been helping him concentrate.
41 28 Old Flame February 25, 1998 230a 34-5480 Cartoon Network
Dexter brings the caveman who first discovered fire back from the past, who acts like Dee Dee and starts smashing the lab.
Don't Be a Hero February 25, 1998 230b 34-5483 Cartoon Network
Dexter tries to turn himself into a superhero, but gives up after every power he tries backfires.
My Favorite Martian February 25, 1998 230c 34-5477 Cartoon Network
Dexter travels to Mars to find intelligent life, unaware that Dee Dee has stowed away in his space capsule. After Dee Dee gets covered in red dirt, Dexter thinks she is a real-life Martian.
42 29 Paper Route Bout March 4, 1998 228a 34-5485 Cartoon Network
Dee Dee's father trains her to fight a gang of bicycle-riding rogues dressed as ninjas who target her paper route every morning.
The Old Switcharooms March 4, 1998 228b 34-5484 Cartoon Network
Dexter's father makes him and Dee Dee switch each other's rooms as punishment for running into him while they were fighting and accidentally causing his bowling trophy to break. Dexter believes that Dee Dee is destroying his lab and destroys her room in retaliation. However, it turns out that Dee Dee did not even enter his lab and Dexter is later grounded again by his father for both destroying Dee Dee's room and for having his bowling trophy get broken again and by making him switch places with the dog for the night. Ironically, while Dexter is confident that the dog won't destroy his lab, the dog actually ends up destroying his lab.
Trick or Treehouse March 4, 1998 228c 34-5478 Cartoon Network
Dee Dee builds a treehouse and allows everyone inside except Dexter, in revenge for the numerous times he kicked her out of his lab.
43 30 Quiet Riot March 11, 1998 229a 34-5489 Cartoon Network
After working in his lab all night creating his latest invention, Dexter tries to get some sleep, but is constantly interrupted by Dee Dee.
Accent You Hate March 11, 1998 229b 34-5486 Cartoon Network
Dexter and his friends are targeted by a bully at school for their multicultural accents.
Catch of the Day March 11, 1998 229c 34-5487 Cartoon Network
Dexter's father tries to get himself and Dexter to his fishing spot before sunrise so that they can start fishing before others arrive; however, they repeatedly manage to blow it. Dexter then takes matters in his own hands by driving himself, his father and the family car into the lake just before sunrise, thus succeeding before the other families arrive.
44 31 Dad Is Disturbed March 18, 1998 232a 34-5494 Cartoon Network
Dexter's father tries to watch a golf tournament, but is constantly interrupted by his wife, Dexter and Dee Dee.
Framed March 18, 1998 232b 34-5493 Cartoon Network
When Dexter's glasses are broken by Dee Dee, he creates a new fad (wearing broken glasses) and becomes extremely popular at his school with his style. However, he soon learns a lesson on the short-lived popularity of a fad when Mandark creates a new fad with his hand and leg casts.
That's Using Your Head March 18, 1998 232c 34-5488 Cartoon Network
Dexter thinks that a crazy homeless person balancing electronic devices on his head and muttering gibberish is a genius trying to contact aliens, so he takes him home, hoping that he could contact the aliens.
45 32 DiM March 25, 1998 233a 34-5501 Cartoon Network
Dexter makes an angst-ridden trip to the hardware store to buy a new light bulb for his lab.
Just an Old-Fashioned Lab Song... March 25, 1998 233b 34-5497 Cartoon Network
Dexter reluctantly takes piano lessons from Professor Williams (Paul Williams), but when the Professor stumbles onto Dexter's lab, he discovers that Dexter has more musical talent than he actually thought.
Repairanoid March 25, 1998 233c 34-5498 Cartoon Network
When an electrician comes to Dexter's house to repair a blown-out fuse, he accidentally stumbles onto his laboratory. Eventually, Dexter enlists him to repair his lab electricals, resulting in the electrician's overall bill going up to $40000.
46 33 Sdrawkcab (a.k.a. Backwards) April 1, 1998 235a 34-5500 Cartoon Network
Dexter invents a belt whose wearer can do anything backwards, but mayhem occurs when Dee Dee gets hold of the belt's directional switch.
The Continuum of Cartoon Fools April 1, 1998 235b 34-5499 Cartoon Network
Dexter tries to figure out how Dee Dee keeps entering his lab every time he kicks her out through one entrance and seals it. When she finally reveals that she entered through the bookcase entrance, he seals that too, only to realize that he cannot enter his lab anymore.
Sun, Surf, and Science April 1, 1998 235c 34-5491 Cartoon Network
Mandark enters a surfing contest and tries to cheat his way to victory to win Dee Dee's heart from another surfer.
47 34 Big Bots April 8, 1998 231a 34-5469 Cartoon Network
Dexter and Dee Dee team up to try to save an island's population from being destroyed by an erupting volcano using their giant robots. They fail in their mission though, due to their constant bickering.
Gooey Aliens That Control Your Mind April 8, 1998 231b 34-5481 Cartoon Network
Dexter's parents and Dee Dee have their minds taken over by an alien life form that escaped from Dexter's lab.
Misplaced in Space April 8, 1998 231c 34-5481 Cartoon Network
A teleporter malfunction sends Dexter to an alien prison, prompting Dee Dee to go on a mission to save Dexter. Instead of being grateful, Dexter egotistically blames Dee Dee for her distractions as he was trying to fix the malfunction in the teleporter.
48 35 Dee Dee's Rival April 15, 1998 236a 34-5505 Cartoon Network
Mandark's sister Olga Astronomonov (a.k.a. Lalavava) tries to upstage Dee Dee at dance school. However, when they realize how their rivalry matches that of the rivalry between their brothers, they call off their rivalry and form a truce.
Pslyghtly Psycho April 15, 1998 236b 34-5504 Cartoon Network
On Mother's Day, Dexter's mother has her yellow gloves taken away by the rest of the family so that she can relax and not do any housework, but it turns out that she is unable to adjust to a life where she cannot keep the house spotless even for a day.
Game for a Game April 15, 1998 236c 34-5509 Cartoon Network
After Dee Dee declares that she can beat Dexter in any game, Dexter challenges her to a series of games in his lab, most of which he wins by cheating, but when he is about to lose the final game, he goes ballistic and destroys his lab.
49 36 Blackfoot and Slim April 22, 1998 237a 34-5496 Cartoon Network
A nature documentary team observes "Blackfoot" (Dexter) and "Slim" (Dee Dee) in their "natural habitat".
Trapped with a Vengeance April 22, 1998 237b 34-5490 Cartoon Network
Dexter is trapped in his school by the janitor in revenge for making him work late everyday due to Dexter's habit of leaving the school last everyday.
The Parrot Trap April 22, 1998 237c 34-5495 Cartoon Network
Dexter invents a robot parrot that happily repeats every self-congratulatory comment he makes, but when it starts repeating things about his lab, courtesy of Dee Dee, and escapes, he sets out to destroy it for good before it tattles to his parents about his lab. Ironically, when he is confronted by his parents after destroying the parrot, he accidentally reveals about his lab anyway.
50 37 Dexter and Computress Get Mandark! April 29, 1998 234a 34-5508 Cartoon Network
Created and narrated by a six-and-a-half-year-old boy named Tyler Samuel Lee, who sent a tape containing the episode's audio to Cartoon Network, the story follows Dexter and Mandark's robot "brother" Computress teaming up to make Mandark's head shrink.
Pain in the Mouth April 29, 1998 234b 34-5503 Cartoon Network
When Krunk gets a tortilla chip stuck in his tooth, Major Glory decides to fix it by pulling the tooth out himself.
Dexter vs. Santa's Claws April 29, 1998 234c 34-5502 Cartoon Network
Dexter tries to prove to Dee Dee that Santa Claus is not real and is actually their father is disguise, but he turns out to be wrong and also ruins his family's Christmas in the process.
51 38 Dyno-Might May 6, 1998 238a 34-5492 Cartoon Network
In this crossover between Dexter's Laboratory and the 1970s Hanna-Barbera cartoon Dynomutt, Dog Wonder, Blue Falcon (Gary Owens) comes to Dexter's house and asks him to rebuild an injured Dynomutt. When he does so, the rebuilt Dynomutt ends up destroying his lab due to his stupidity, forcing him to deactivate him and build an entirely new Dynomutt, the Dynomutt X-90, which proves to be a menace. Blue Falcon teaches Dexter a lesson when he calls him out for deactivating his original Dynomutt when he reveals that despite his stupidity, the original Dynomutt was a more helpful partner than the one Dexter created for him.
LABretto May 6, 1998 238b 34-5507 Cartoon Network
Dexter's life story, from his birth to the creation of his secret laboratory, is retold as an opera.
52 39 Last But Not Beast June 15, 1998 239 34-5506 Cartoon Network
During a trip to Japan as part of a student exchange program, Dexter accidentally releases a giant monster with an axe-like head from a volcano, forcing him to enlist the aid of his entire family in order to defeat it. This episode features the casts of The Justice Friends and Dial M for Monkey in battle against the monster. In this episode, Dexter finally reveals about his lab to his parents in order to get their help, but he erases it from their memories after defeating the monster. He also finds out that his lab monkey is a superhero, but Monkey erases this from his memory including the whole battle against the monster at the end of the episode. Mandark believes that he defeated the monster which upsets Dexter. Only Dee Dee and Monkey know what really happened.

Unaired episode

Title Directed by Storyboarded by Airdate Production Code Network
Rude Removal Rob Renzetti Chong Lee and Craig McCracken February 21, 1998 (World Animation Celebration)
January 22, 2013 (online)
Adult Swim

Television film (1999)

Title Directed by Story by Storyboarded by Airdate Network
Ego Trip Genndy Tartakovsky Chris Savino, Amy Keating Rogers, John McIntyre, Craig McCracken, Paul Rudish, and Genndy Tartakovsky Dave Smith, Chris Savino, Paul Rudish, and Genndy Tartakovsky December 10, 1999 Cartoon Network

Revival series (2001-2003)

Season 3 (2001-2002)

No. in
No. in
Title Airdate Production
53 1 Streaky Clean November 16, 2001 301a Cartoon Network
Dexter creates a satellite to clean stains off of his clothes, but it goes horribly wrong when Mir space station hits the satellite that Dexter created and the satellite becomes damaged, causing the fabric beneath each stain to be eliminated as well.
A Dad Cartoon November 16, 2001 301b Cartoon Network
Dad decides to give the car a retouch, but keeps breaking things and saying he will fix it later. After having enough, he pushes the car over a cliff, and below it are other crushed cars, meaning this was not the first time.
Sole Brother November 16, 2001 301c Cartoon Network
Dexter accidentally becomes Dee Dee's foot when the two fuse together. Now, they have to wait 24 hours to reverse the fusion.
54 2 Mind Over Chatter November 16, 2001 302a Cartoon Network
Dexter accidentally gives himself telepathy that he cannot shut off when trying to overhear his father's thoughts to figure out what he got for his birthday, causing everyone to accidentally read his own mind.
A Quackor Cartoon November 16, 2001 302b Cartoon Network
Quackor returns to battle Monkey in Dexter's Lab until Quackor lays an egg; then the two fall in love.
Momdark November 16, 2001 302c Cartoon Network
Mandark disguises himself as Dexter's mom to get into Dexter's Lab. Unfortunately for Mandark, he now has to deal with Dexter, Dad, and Dee Dee's requests, which are too much for him.
55 3 Copping an Aptitude November 30, 2001 304a Cartoon Network
Dexter's school and parents decide to send him to college. He ignores his fellow students, who prefer to "party now, study later", until his mind finally snaps from the workload.
A Failed Lab Experiment November 30, 2001 304b Cartoon Network
When Dexter's new device, made to help him see through solid objects, fails to work as expected, he ends up seeing through people's clothes, which puts him in an uncomfortable situation.
The Grand-Daddy of All Inventions November 30, 2001 304c Cartoon Network
During a trip to his grandfather's house, Dexter learns that the outwardly boring old man has a lab just like his own.
56 4 Poppa Wheely January 18, 2002 303a Cartoon Network
It is Career Day, and because Dexter is ashamed of his father, he creates a better father for himself. However, he soon discovers that his real father is much cooler.
A Mom Cartoon January 18, 2002 303b/312b Cartoon Network
Dexter's mom fights another woman at the supermarket for some new latex gloves.
The Mock Side of the Moon January 18, 2002 303c Cartoon Network
Dexter travels to the moon and finds that aliens are planning an invasion on Earth, and he has to stop them. It turns out that they only were interested in purchasing sweaters for the winter.
57 5 If Memory Serves February 22, 2002 306a Cartoon Network
To keep himself from forgetting anything important, Dexter uses a device to copy his memories, which causes a mayhem in his own head.
A Mandark Cartoon February 22, 2002 306b Cartoon Network
Mandark plans another scheme to get rid of Dexter. Everything in this cartoon is to the tune of Mandark's trademark laugh.
Tele Trauma February 22, 2002 306c Cartoon Network
Since his studying is interrupting his favorite TV shows, Dexter creates a helmet to absorb the shows directly. However, the plan backfires when he randomly snaps into television-based outrages.
58 6 A Boy Named Sue March 29, 2002 305a Cartoon Network
Mandark's birth and origins as the child of hippies are revealed, as is the beginning of his rivalry with Dexter.
Lab on the Run March 29, 2002 305b Cartoon Network
Two robots escape from Dexter's lab in order to have a better life and avoid Dexter's totalitarian rule.
59 7 Dos Boot June 7, 2002 307a Cartoon Network
Mandark gets inside Dexter's computer system and creates a computer virus, so Dexter must follow him inside and kick him out from cyberspace. However, Dee Dee has other plans in mind.
A Dee Dee Cartoon June 7, 2002 307b Cartoon Network
Dee Dee goes and plays in her own "lab" after being kicked out of Dexter's.
Would You Like That in the Can June 7, 2002 307c Cartoon Network
Dexter and his friend Douglas Mordecai must enter the girls' bathroom to retrieve Dexter's lunchbox, which was put in there by another student.
60 8 That Magic Moment June 14, 2002 308a Cartoon Network
Dexter's Magic Uncle Fergel O'Reilly pays a visit to the family.
A Silent Cartoon June 14, 2002 308b Cartoon Network
Dexter is trying to paint his lab blue, but Dee Dee wants to make it pink.
Opposites Attract June 14, 2002 308c Cartoon Network
Dexter creates a magnetic field to keep Dee Dee away from him, but it malfunctions, causing them to stick together.
61 9 Comic Relief June 21, 2002 310a Cartoon Network
Dexter creates a device to make a lifelike superhero comic, with his sister villain "Deestructa".
A Third Dad Cartoon June 21, 2002 310b Cartoon Network
Dexter's father plays golf with his kids.
Robo-Dexo 3000 June 21, 2002 310c Cartoon Network
Dexter creates the ultimate robot to replace his Robo-Dexo 2000.
62 10 Glove at First Sight June 28, 2002 311a Cartoon Network
Dexter's parents remember their first date and dance together.
A Mom & Dad Cartoon June 28, 2002 311b Cartoon Network
Dexter and Dee Dee listen in on their parents' conversation; they are playing Scrabble, but the way they talk makes it sound like Dad was cheating on Mom.
Smells Like Victory June 28, 2002 311c Cartoon Network
The U.S. army invades Dexter's lab under the mistaken impression that aliens are using it as a base of operations on Earth, and Dexter must convince them that this is actually his lab, and also has to keep this a secret from Dee Dee.
63 11 Oh, Brother July 5, 2002 309a Cartoon Network
Dexter turns Dee Dee into a boy, but is disappointed when "he" is not as cool as Dexter would like it.
Another Dad Cartoon July 5, 2002 309b Cartoon Network
With everyone out of the house, Dexter's father decides to spend the time dancing.
Bar Exam July 5, 2002 309c Cartoon Network
Dexter's parents discover that he is making false excuses to get out of physical education and now Dexter must pass a physical exam if he wants to pass P.E. and move up a few grades.
64 12 Jeepers, Creepers, Where Is Peepers? July 12, 2002 313a Cartoon Network
Dexter and Koos must save Peepers to keep the land of Kooz from disappearing. However, they must contend with a villain who is determined to make the land of Kooz disappear forever.
Go, Dexter Family! Go! July 12, 2002 313b Cartoon Network
Dexter's family must rescue him from aliens.
65 13 Scare Tactics September 20, 2002 312a Cartoon Network
After watching a horror film, Dexter and his father become easily frightened.
My Dad Vs. Your Dad September 20, 2002 312c Cartoon Network
Dexter and Mandark's fathers become embroiled in a conflict after trying to defuse one between their sons.

Animated short (2002)

Title Directed by Produced by Release
Chicken Scratch Genndy Tartakovsky John Cawley, Brian A. Miller, Jennifer Pelphrey and Genndy Tartakovsky July 3, 2002

Season 4 (2002-2003)

No. in
No. in
Title Airdate Production
66 1 Beau Tie November 22, 2002 402a Cartoon Network
Dee Dee has a new boyfriend who likes science and Einstein. Unfortunately, when Dexter tries to get the boyfriend, named Beau, to see his stuff, Beau ends up running away from the both of them in fear, which saddens Dee Dee.
Remember Me? November 22, 2002 402b Cartoon Network
When Dexter gets amnesia, Dee Dee decides to play tricks on him by creating a whole new identity for him in her image.
Overlabbing November 22, 2002 402c Cartoon Network
Dexter and Mandark drill underground to expand their labs, but end up running into each other's work. So they agree to share the lab, inducing chaos.
67 2 Sis-Tem Error April 25, 2003 401a Cartoon Network
Dee Dee accidentally shuts down Dexter's lab, and he has to power it back. In the process, Dee Dee attempts to keep Dexter from finding out what she really did.
Bad Cable Manners April 25, 2003 401b Cartoon Network
Dexter pirates cable for his father.
Dexter's Library April 25, 2003 401c Cartoon Network
Dexter becomes the stern administrator of his local library.
68 3 The Scrying Game May 2, 2003 405a Cartoon Network
Dee Dee learns a new game that can predict the future events.
Monstrosi-Dee Dee May 2, 2003 405b Cartoon Network
When Dee Dee eats a contaminated apple, she turns into a monster every time when she tells Dexter what to do.
Dad Man Walking May 2, 2003 405c Cartoon Network
Dexter's father sleepwalks into Dexter's lab. Dexter discovers this, and now has to escort him out of the lab without waking him up, which proves more difficult than thought.
69 4 Dexter's Little Dilemma May 9, 2003 403a Cartoon Network
Dexter shrinks his parents and puts them into a model of their house for observation.
Faux Chapeau May 9, 2003 403b Cartoon Network
Dexter's newest invention looks like a hat, so Dee Dee takes it and wears it around town.
May 9, 2003 403c Cartoon Network
Dexter and Dee Dee realize that they make a good team, so they decide to do stuff together, but doing so makes things worse.
70 5 Head Band May 16, 2003 404a Cartoon Network
Dee Dee gets a song stuck in her head, which is actually a virus. Dexter and Mom soon catch it, and Dexter has to reverse the effects of this. He succeeds at the end, not knowing that Dad also caught it.
Stuffed Animal House May 16, 2003 404b Cartoon Network
Dee Dee's stuffed animals come to life and roam the house when Dee Dee uses a formula that brings inanimate objects to life, which delights Dee Dee, much to his dismay.
Used Ink May 16, 2003 404c Cartoon Network
Dexter creates a new type of ink that lets him command people to do whatever he wants. However, when Mandark gets his hands on it, Dexter becomes the one being commanded.
71 6 School Girl Crushed May 23, 2003 407a Cartoon Network
Dexter and Mandark are both outperformed by a new girl at school, so they reluctantly team up to get rid of her.
Chess Mom May 23, 2003 407b Cartoon Network
Dexter's mother attempts to support him during a chess tournament but does nothing but embarrass him.
Father Knows Least May 23, 2003 407c Cartoon Network
Dexter's father is left to watch the kids while his wife visits her sister.
72 7 Dexter the Barbarian May 30, 2003 406a Cartoon Network
Dexter tries to emulate the barbarian hero of his favorite comic book.
Tuber Time May 30, 2003 406b Cartoon Network
Dexter studies the potato, and when he is fascinated by its power to light up a light bulb, he tries to use it as an energy source.
Sore Eyes May 30, 2003 406c Cartoon Network
Dexter tries to improve his eyesight by giving himself laser eye surgery, but goes too far in doing so.
73 8 Babe Sitter September 5, 2003 413a Cartoon Network
Dee Dee is hired by Mandark's parents to babysit him.
Mountain Mandark September 5, 2003 413b Cartoon Network
Mandark gets in touch with nature.
2Geniuses 2Gether 4Ever September 5, 2003 413c Cartoon Network
Dexter decides to work with Mandark, but finds himself doing all of the work. In the end, Mandark tries to press the button when Dexter connects the plug in the outlet to bring his show title back.
74 9 Height Unseen September 12, 2003 408a Cartoon Network
Again tired of being short, but mindful of his past failures, Dexter decides to make everyone shorter than himself.
Bygone Errors September 12, 2003 408b Cartoon Network
Old Dexter And Old Dee Dee's talks about the glory days, and his sister is still there to inject her opinions, telling him what really happened.
Folly Calls September 12, 2003 408c Cartoon Network
When Dee Dee tries to cut off a piece of her hair, she accidentally cuts off one of her pigtails. Dexter gives her a potion to make her missing hair grow back. However, Dee Dee squirts too much of it in her hair, and Dexter must return Dee Dee's hair back to normal.
75 10 Voice Over September 19, 2003 409a Cartoon Network
When Dexter's computer gets laryngitis, Dexter must find a replacement voice.
The Blonde Leading the Blonde September 19, 2003 409b Cartoon Network
Dexter refuses to admit that blondes have more fun, so Dee Dee secretly dyes his hair blond to prove it to him.
Comic Stripper September 19, 2003 409c Cartoon Network
Dexter finds out that all of Mandark's plans are taken from a comic book.
76 11 Tee Party September 26, 2003 410a Cartoon Network
Dexter and his father enter a golf tournament, but Dexter's father proves inept at the sport.
Dexter's Wacky Races September 26, 2003 410b Cartoon Network
Dexter, Monkey, Agent Honeydew, the Justice Friends, Dee Dee, her imaginary friend Koosalagoopagoop, Mandark, his parents, and Dexter's parents participate in a cross-country race a la Wacky Races.
77 12 The Lab of Tomorrow November 4, 2003 411a Cartoon Network
Monkey narrates a documentary of the future of laboratories and sciences.
Chicken Scratch November 4, 2003 411b Cartoon Network
Dexter catches the chicken pox, and Dee Dee tells him a ridiculous tale that if he keeps scratching them, he will turn into an evil chicken. Dexter completely restrains himself so that he won't have to scratch it; unfortunately, he is unable to resist and his nonstop scratching eventually does just that.
Garage Sale November 4, 2003 411c Cartoon Network
Dexter creates a device that turns people into hideous blobs. His parents then sell the device in a garage sale, where it ends up in Mandark's hands.
78 13 They Got Chops November 20, 2003 412a Cartoon Network
When Dee Dee's Judo skills prove too much for Dexter, Dexter learns how to fight back at the same dojo she went to.
Poetic Injustice November 20, 2003 412b Cartoon Network
Dexter falls in love with a new girl at his school, but cannot win her heart.
Comedy of Feathers November 20, 2003 412c Cartoon Network
Dexter is forced to take Dee Dee to the zoo. There, she ends up trying to save an ostrich with disastrous results, including getting morphed together. Dee Dee and the ostrich switch places.

v - e - d
Television: Dexter's Laboratory (Episodes) • What a Cartoon!Cartoon CartoonsRude Removal (Banned episode)

Segments: Dial M for MonkeyThe Justice Friends
TV film: Ego Trip
Video games: Chess ChallengeRobot RampageDeesaster Strikes!Mandark's Lab?Science Ain't Fair
Home video: Video
Comic books:

Main characters: Dexter / Number 12 / Action Dexter / Old Man DexterDee Dee / Old Gal Dee DeeMomDadMonkeyMajor GloryQuadraplex T-3000 ComputerDogMandark / Executive Mandark / Overlord Mandark / BraindarkOceanbirdWindbearDouglas E. Mordecai IIIKoosalagoopagoopPony Puff PrincessAction HankLee LeeMee MeePhillips LuzinskyQuackorPuppet Pals

Other characters: BadaxtraBoy Band VirusBuzzardCap'n AhabWet WillieCaptain of Chubby Cheese'sChubby HelpersCindyClawCrazy RobotDarbie CollectorsDetention WardenDodge Ball BulliesQuackor the FowlDoo DeeDynomutt X-90EarlEnergy ThiefFishing RivalsFishyGaryBecky & GwenGooey AliensGorkGym TeacherHuman Dissecting AliensHookochoIce Cream ManInter-Dimensional MonsterJeffJoJoLalavavaMajor Glory GangMaster ComputerMat ParallaxPrincipalMom's RivalMs. LPaper NinjasPerfect PonyPrison WardenRed-EyeThe RobberRude Dee DeeRude DexterShoe GnomesThe YardUltrabot 2000Ultrabot 4000 Observation UnitsYaniYani's wifeArnieBarney Rubble (cameo) • Betty Rubble (cameo) • Big Daddy FatBilly BloombergBlue Falcon (crossover) • CatCharlieChrisChubby CheeseComputressCreepy Eyed GirlCreepy Neighborhood BoyDick McMannDexter's FriendsDextaminaDextorDextor's parentsDynomutt (crossover) • Eccentric ManFergle O'ReillyGrandpaJimmy SmithJurassic PoochKatkaLisaLucky & PierreMailman MelMar-10, Fred and TinyMary WeatherMidgeMikeMiss WimpleMr. ChauMiss PimmerwikleNASANeighbor LadyNess MonsterOld Man McCowskyPhilian PoppyseedProfessor HawkProfessor Hawk's FansProfessor WilliamsReplacement SistersSanta ClausSoyen ChenSurfer BoyTalking DogTalking Dog's OwnerTattooTiki GodTimmyToshiTrevor WinkleMiss SalingerKoosalagoopagoop

Broken Dreams Vault | Burrito Palace | Chubby Cheese's | Dad's Laboratory | Dance School | Dee Dee's Laborator] | Dexter's House | Dexter's Laboratory | Dextopia | Flowertopia | Genius Grove | Hall of Heroes | HANK HQ | Huber Elementary | Independence Mall | Koosland | Krunk's Room | Major Glory's Room | Mandark's House | Mandark's Laboratory | Mom's Laboratory | Muscular Arms | Pony Puff Place | Ship-A-Drome | State Prison | Suburbs | Tattoo's | The Sewer Beyond | The Yard | Trollbe Tooth Forest | Ultrabot's Laboratory | Valhallen's Room | Wong's Food to Go! | Library | Dee Dee's Room | Dexter Museum
See also
Cartoon Network StudiosHanna-BarberaThe Powerpuff GirlsFoster's Home for Imaginary Friends
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