List of Dexter's Laboratory episodes

Poster for the Dexter's Laboratory pilot on World Premiere Toons.

Dexter's Laboratory is an American 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 Cartoon Network on April 28, 1996.^[1] 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, except for episodes "Ant Pants", "Chubby Cheese" and "Lab of the Lost". "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.^[2] 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 21, 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.^[3]

Series overview

Season		Episodes	Segments	Originally aired
				First aired	Last aired
	Pilots	2	N/A	February 26, 1995	March 10, 1996
	1	13	39	April 28, 1996	January 1, 1997
	2	39	108	July 16, 1997	June 15, 1998
	3	13	36	November 16, 2001	September 20, 2002
	4	13	38	November 22, 2002	November 20, 2003
	TV movie		N/A	December 10, 1999

Episodes

Pilots (1995–96)

Title	Directed by	Original air date
"Dexter's Laboratory[4]"	Genndy Tartakovsky	February 26, 1995[5]
Dexter and Dee Dee test his latest invention: a device that turns people into animals, which yields crazy results.
"The Big Sister"	Genndy Tartakovsky	March 10, 1996
When Dee Dee eats an experimental cookie of Dexter's design, she grows extremely into a giant and makes the city her dollhouse. As she destroys the whole city, it leaves it up to Dexter to don his giant Robo-Dexo suit and bring her back.

Season 1 (1996–97)

No. in series	No. in season	Title	Directed by	Storyboarded by	Original air date
1a	1a	"DeeDeemensional"	Rob Renzetti and Genndy Tartakovsky	Rob Renzetti	April 28, 1996[1]
When Dexter becomes a victim of one of his inventions, Dee Dee goes back in time by one hour to warn his past self about the invention's consequences, but the past Dexter proves hard to convince until he sees two Dee Dees.
1b	1b	"Magmanamus"	Paul Rudish and Genndy Tartakovsky	Craig McCracken	April 28, 1996[1]
Monkey must defend the city from a giant lava monster, Magmanamus (Brad Garrett), who is wrecking it as the noise created by its residents is not allowing him to sleep.
1c	1c	"Maternal Combat"	Rob Renzetti and Genndy Tartakovsky	Rob Renzetti	April 28, 1996[1]
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.
2a	2a	"Dexter Dodgeball"	Craig McCracken and Genndy Tartakovsky	Ricky Nierva	May 5, 1996
Dexter is forced to play dodgeball by his P. E. teacher (Michael Pataki), but after constantly losing, he builds a robotic exoskeleton to protect himself.
2b	2b	"Rasslor"	Paul Rudish and Genndy Tartakovsky	Paul Rudish	May 5, 1996
Intergalactic wrestling champion Rasslor ("Macho Man" Randy Savage) challenges all of the Earth's superheroes, including Monkey, with the very future of the Earth at stake.
2c	2c	"Dexter's Assistant"	Rob Renzetti and Genndy Tartakovsky	Brett Varon and Craig McCracken	May 5, 1996
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.
3a	3a	"Dexter's Rival"	Genndy Tartakovsky	Genndy Tartakovsky	May 12, 1996
A new student named Mandark Astronomonov enrolls at Dexter's school and quickly turns out to be better than Dexter academically. Eventually, he even forces him 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. Note: This episode marks Mandark's first appearance in the series.
3b	3b	"Simion"	Paul Rudish and Genndy Tartakovsky	Lou Romano	May 12, 1996
Monkey encounters an intelligent anthropomorphic chimpanzee named Simion (Maurice LaMarche), who plans to take revenge on humans for turning him into his current state.
3c	3c	"Old Man Dexter"	Craig McCracken and Genndy Tartakovsky	Craig McCracken	May 12, 1996
After Dexter is banned from watching The Late Early Movie due to his age, he decides to accelerate his age so that he can see the movie, but Dee Dee tampers with the age acceleration process, causing him to turn into a 95-year-old man.
4a	4a	"Double Trouble"	Rob Renzetti and Genndy Tartakovsky	Butch Hartman	May 19, 1996
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.
4b	4b	"Barbequor"	Paul Rudish and Genndy Tartakovsky	Paul Rudish	May 19, 1996
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 (Rob Paulsen).
4c	4c	"Dexter's Laboratory"	Genndy Tartakovsky	TBA	May 19, 1996
Rerun of the first What a Cartoon! pilot.
5a	5a	"Jurassic Pooch"	Craig McCracken and Genndy Tartakovsky	Butch Hartman and Conrad Vernon	May 26, 1996
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.
5b	5b	"Orgon Grindor"	Paul Rudish and Genndy Tartakovsky	Lou Romano and Mike Fontanelli	May 26, 1996
While on a date with Agent Honeydew, Monkey gets hypnotized by the music of an alien named Organ Grindor (Jim Cummings), who then commands him to steal the gold at Fort Knox.
5c	5c	"Dimwit Dexter"	Genndy Tartakovsky	C. Miles Thompson	May 26, 1996
Dexter cracks due to overwork and starts acting idiotic, which makes him the butt of jokes among Dee Dee and the entire neighborhood.
6a	6a	"Dee Dee's Room"	Genndy Tartakovsky	Ted Newton and Todd Fredericksen	June 2, 1996
After finding out that his critical invention has been stolen by Dee Dee, Dexter ventures into her room to find it.
6b	6b	"Huntor"	Paul Rudish and Genndy Tartakovsky	Paul Rudish	June 2, 1996
Monkey encounters an alien hunter named Huntor (Ed Gilbert) and must fight him before Agent Honeydew and Commander Chief are killed.
6c	6c	"The Big Sister"	Genndy Tartakovsky	TBA	June 2, 1996
Rerun of the second What a Cartoon! pilot.
7a	7a	"Star Spangled Sidekicks"	Genndy Tartakovsky	Genndy Tartakovsky	November 20, 1996
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.
7b	7b	"TV Super Pals"	Craig McCracken and Genndy Tartakovsky	Craig McCracken	November 20, 1996
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.
7c	7c	"Game Over"	Craig McCracken and Genndy Tartakovsky	Craig McCracken	November 20, 1996
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.
8a	8a	"Babysitter Blues"	Craig McCracken and Rob Renzetti	Craig McCracken	November 27, 1996
Dexter has a crush on his teenage babysitter Lisa (Kath Soucie). 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.
8b	8b	"Valhallen's Room"	Genndy Tartakovsky	Paul Rudish and Butch Hartman	November 27, 1996
Valhallen loses his magic ax and starts turning into a nerd, forcing Major Glory and Krunk to enter his room to find it.
8c	8c	"Dream Machine"	Rob Renzetti and Genndy Tartakovsky	Don Shank	November 27, 1996
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.
9a	9a	"Dollhouse Drama"	Rob Renzetti	Rob Renzetti	December 4, 1996
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.
9b	9b	"Krunk's Date"	Genndy Tartakovsky	Butch Hartman	December 4, 1996
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 (Kath Soucie).
9c	9c	"The Big Cheese"	Genndy Tartakovsky	Charlie Bean	December 4, 1996
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.
10a	10a	"Way of the Dee Dee"	Paul Rudish and Genndy Tartakovsky	Paul Rudish	December 11, 1996
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.
10b	10b	"Say Uncle Sam"	Genndy Tartakovsky	Butch Hartman	December 11, 1996
Major Glory forces Krunk and Valhallen to tidy up their apartment for his Uncle Sam, who is coming over for a visit to Glory.
10c	10c	"Tribe Called Girl"	Rob Renzetti and Genndy Tartakovsky	Don Shank	December 11, 1996
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.
11a	11a	"Spacecase"	Rob Renzetti and Genndy Tartakovsky	Ricky Nierva	December 18, 1996
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.
11b	11b	"Ratman"	Genndy Tartakovsky	Charlie Bean	December 18, 1996
While trying to fix their apartment's plumbing, Krunk and Valhallen go down to the basement, where they meet Ratman (Maurice LaMarche), a diminutive vigilante raised by rats.
11c	11c	"Dexter's Debt"	Genndy Tartakovsky	Charlie Bean	December 18, 1996
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.
12a	12a	"Dexter's Rival"	Genndy Tartakovsky	Genndy Tartakovsky	December 25, 1996
Rerun of the first segment of episode 3.
12b	12b	"Bee Where?"	Paul Rudish and Genndy Tartakovsky	Butch Hartman and Craig McCracken	December 25, 1996
Major Glory, Krunk and Valhallen try to rid their apartment of a bee.
12c	12c	"Mandarker"	Genndy Tartakovsky	Lou Romano	December 25, 1996
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.
13a	13a	"Inflata Dee Dee"	Genndy Tartakovsky	Genndy Tartakovsky	January 1, 1997
Dee Dee inflates Dexter's hydro-plasmatic suit and constantly floats in the air, prompting Dexter to try and bring her down.
13b	13b	"Can't Nap"	Genndy Tartakovsky	Butch Hartman	January 1, 1997
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.
13c	13c	"Monstory"	Rob Renzetti and Genndy Tartakovsky	Don Shank	January 1, 1997
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.

Season 2 (1997–98)

No. in series	No. in season	Title	Directed by	Written by	Storyboarded by	Original air date	Prod. code[6]
14a	1a	"Beard to Be Feared"	Genndy Tartakovsky	TBA	Paul Rudish	July 16, 1997[7]	34-5418
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.
14b	1b	"Quackor the Fowl"	Genndy Tartakovsky	TBA	Genndy Tartakovsky	July 16, 1997[7]	34-5406
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.
14c	1c	"Ant Pants"	Genndy Tartakovsky	TBA	Butch Hartman	July 16, 1997[7]	34-5401
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.
15a	2a	"Mom and Jerry"	Robert Alvarez	TBA	Andy Bialk and Paul Rudish	July 23, 1997	34-5417
Dexter accidentally switches his brain with that of a mouse's and must avoid his mother when she decides to exterminate him.
15b	2b	"Chubby Cheese"	Rob Renzetti	TBA	Dave Smith	July 23, 1997	34-5403
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.
15c	2c	"That Crazy Robot"	Rob Renzetti	TBA	Andy Bialk	July 23, 1997	34-5409
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.
16a	3a	"D & DD"	Genndy Tartakovsky	TBA	Paul Rudish	July 30, 1997	34-5405
When Dexter's friends become completely tired of Dexter setting 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.
16b	3b	"Hamhocks and Armlocks"	Rob Renzetti and Genndy Tartakovsky	TBA	Craig McCracken	July 30, 1997	34-5416
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.
17a	4a	"Hunger Strikes"	Rob Renzetti	Zeke Kamm	Ace Conrad	August 6, 1997	34-5413
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.
17b	4b	"The Koos Is Loose"	Robert Alvarez	Zeke Kamm	Dave Smith	August 6, 1997	34-5420
Dee Dee's imaginary friend Koosalagoopagoop (Dom DeLuise) suddenly comes to life and starts annoying Dexter.
17c	4c	"Morning Stretch"	Rob Renzetti	Zeke Kamm	Ace Conrad and Genndy Tartakovsky	August 6, 1997	34-5422
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.
18a	5a	"Dee Dee Locks and the Ness Monster"	Robert Alvarez and Genndy Tartakovsky	Zeke Kamm	Paul Rudish	August 13, 1997	34-5426
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.
18b	5b	"Backfire"	Rob Renzetti	Zeke Kamm	Nora Johnson	August 13, 1997	34-5425
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 her with the car, causing mayhem.
18c	5c	"Book 'Em"	Robert Alvarez	Zeke Kamm	Greg Miller and Genndy Tartakovsky	August 13, 1997	34-5423
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.
19a	6a	"Sister's Got a Brand New Bag"	Genndy Tartakovsky	TBA	Jeff DeGrandis and Genndy Tartakovsky	August 20, 1997	34-5428
Dee Dee's new dance moves annoy Dexter to no end.
19b	6b	"Shoo, Shoe Gnomes"	Rob Renzetti	TBA	Mike Stern	August 20, 1997	34-5414
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.
19c	6c	"Lab of the Lost"	Genndy Tartakovsky	TBA	C. Miles Thompson and Butch Hartman	August 20, 1997	34-5402
Following a mishap in his lab, Dexter ends up 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.
20a	7a	"Labels"	Rob Renzetti	Zeke Kamm	Kevin Kaliher	August 27, 1997	34-5429
Dee Dee starts to take anything that belongs to Dexter, claiming that it "doesn't have his name on it". He invents a label-making gun to make sure his things do have his name on them.
20b	7b	"Game Show"	Robert Alvarez	Zeke Kamm	Butch Hartman	August 27, 1997	34-5412
Dexter and Dee Dee compete against each other on a game show.
20c	7c	"Fantastic Boyage"	Robert Alvarez	Zeke Kamm	Dan Krall	August 27, 1997	34-5424
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 Dee Dee to be 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.
21a	8a	"Filet of Soul"	Genndy Tartakovsky	TBA	Mike Stern	September 3, 1997	34-5408
Dexter and Dee Dee refuse to flush their dead goldfish into the toilet, and are later haunted by its spirit.
21b	8b	"Golden Diskette"	Genndy Tartakovsky	TBA	Dave Smith	September 3, 1997	34-5412
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.
22a	9a	"Snowdown"	Robert Alvarez and Genndy Tartakovsky	TBA	Craig McCracken	September 10, 1997	34-5415
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.
22b	9b	"Figure Not Included"	Rob Renzetti	TBA	Butch Hartman	September 10, 1997	34-5411
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.
22c	9c	"Mock 5"	Rob Renzetti and Genndy Tartakovsky	TBA	Craig McCracken	September 10, 1997	34-5407
Dexter participates in the "Annual Soapbox Derby down Volcano Mountain". Note: This episode is a spoof of the popular Japanese manga/anime Speed Racer. In this episode, the movements and dialog deliveries of the characters are similar to anime. While Dexter parodies Speed Racer and his father parodies Pops Racer, Monkey parodies Chim-Chim and Dee Dee parodies both Racer-X and Spritle.[8]
23a	10a	"Ewww That's Growth"	Rob Renzetti	Zeke Kamm	Mike Stern	September 17, 1997	34-5427
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.
23b	10b	"Nuclear Confusion"	Robert Alvarez	Zeke Kamm	Butch Hartman	September 17, 1997	34-5421
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.
23c	10c	"Germ Warfare"	Robert Alvarez and Genndy Tartakovsky	Zeke Kamm	Ace Conrad and Genndy Tartakovsky	September 17, 1997	34-5434
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.
24a	11a	"A Hard Day's Day"	Rob Renzetti	TBA	Craig McCracken	September 24, 1997	34-5430
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.
24b	11b	"Road Rash"	Rob Renzetti	TBA	Nora Johnson	September 24, 1997	34-5436
Dexter's parents get him a bike for exercise, but he's unable to catch Dee Dee on her inline skates. Note: This episode parodies the Wile E. Coyote and Road Runner cartoons, with Dexter trying similar techniques as Wile E. Coyote in capturing Dee Dee, and at one point Dee Dee imitating the Roadrunner with Paul Julian's trademark "Meep-meep!"
24c	11c	"Ocean Commotion"	Rob Renzetti	TBA	Kevin Kaliher	September 24, 1997	34-5419
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.
25a	12a	"The Bus Boy"	Robert Renzetti and Genndy Tartakovsky	Zeke Kamm	Don Shank	October 1, 1997	34-5442
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.
25b	12b	"Things That Go Bonk in the Night"	Genndy Tartakovsky	Zeke Kamm	Craig McCracken	October 1, 1997	34-5435
After a Puppet Pals marathon, Krunk dreams the Puppet Pals are attacking puppet versions of Major Glory and Valhallen.
25c	12c	"Ol' McDexter"	Robert Alvarez and Genndy Tartakovsky	Zeke Kamm	Mike Stern	October 1, 1997	34-5438
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.
26a	13a	"Sassy Come Home"	Genndy Tartakovsky	Zeke Kamm	Dave Smith	October 8, 1997	34-5439
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.
26b	13b	"Photo Finish"	Robert Alvarez and Genndy Tartakovsky	Zeke Kamm	Don Shank	October 8, 1997	34-5433
When Dee Dee takes photographs of his lab, Dexter goes on an adventure to retrieve the photos before his mother or father sees them.
27a	14a	"Star Check Unconventional"	Rob Renzetti	Zeke Kamm	Paul Rudish	October 15, 1997	34-5432
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.
27b	14b	"Dexter Is Dirty"	Genndy Tartakovsky	Zeke Kamm	Greg Emison and Genndy Tartakovsky	October 15, 1997	34-5447
Tired of bathing, Dexter laminates himself to keep himself clean.
27c	14c	"Ice Cream Scream"	Robert Alvarez	Zeke Kamm	Kevin Kaliher	October 15, 1997	34-5449
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.
28a	15a	"Decode of Honor"	Robert Alvarez and Genndy Tartakovsky	Zeke Kamm	Craig McCracken	October 22, 1997	34-5437
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.
28b	15b	"World's Greatest Mom"	Rob Renzetti	Zeke Kamm	Andy Bialk	October 22, 1997	34-5443
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.
28c	15c	"Ultrajerk 2000"	Robert Alvarez	Zeke Kamm	Daniel Krall	October 22, 1997	34-5445
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.
29a	16a	"Techno Turtle"	Rob Renzetti	Jeffrey Delman, Laura Glendinning, and Zeke Kamm	Rob Renzetti	October 29, 1997	34-5441
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.
29b	16b	"Surprise!"	Robert Alvarez	Jeffrey Delman, Laura Glendinning, and Zeke Kamm	Andy Bialk	October 29, 1997	34-5451
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.
29c	16c	"Got Your Goat"	Robert Alvarez and Genndy Tartakovsky	Jeffrey Delman, Laura Glendinning, and Zeke Kamm	Nora Johnson	October 29, 1997	34-5444
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.
30a	17a	"Dee Dee Be Deep"	Genndy Tartakovsky	Zeke Kamm	Chris Savino	November 5, 1997	34-5454
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.
30b	17b	"911"	Rob Renzetti and Genndy Tartakovsky	Zeke Kamm	Ace Conrad and Genndy Tartakovsky	November 5, 1997	34-5446
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.
30c	17c	"Down in the Dumps"	Robert Alvarez	Zeke Kamm	Kevin Kaliher	November 5, 1997	34-5456
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.
31a	18a	"Unfortunate Cookie"	Robert Alvarez and Genndy Tartakovsky	TBA	Kevin Kaliher	November 12, 1997	34-5440
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.
31b	18b	"The Muffin King"	Genndy Tartakovsky	TBA	Mike Stern	November 12, 1997	34-5450
Dexter and Dee Dee must protect their mother's muffins from their muffin-loving father while she is out shopping.
32a	19a	"Picture Day"	Genndy Tartakovsky	TBA	Dave Smith	November 19, 1997	34-5455
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.
32b	19b	"Now That's a Stretch"	Genndy Tartakovsky	TBA	Nora Johnson	November 19, 1997	34-5453
Dexter cannot reach anything in his lab, so he makes himself more flexible by combining himself with bubble gum.
32c	19c	"Dexter Detention"	Rob Renzetti	TBA	Dave Smith and Christopher Battle	November 19, 1997	34-5431
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.
33a	20a	"Don't Be a Baby"	Robert Alvarez and Genndy Tartakovsky	TBA	Mike Stern	November 26, 1997	34-5457
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.
33b	20b	"Peltra"	Genndy Tartakovsky	TBA	Paul Rudish	November 26, 1997	34-5458
Peltra wants to turn Monkey into a fur coat.
33c	20c	"G.I.R.L. Squad"	Rumen Petkov	TBA	Andy Bialk	November 26, 1997	34-5459
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.
34a	21a	"Sports a Poppin'"	Rob Renzetti and Genndy Tartakovsky	TBA	Douglas McCarthy and Genndy Tartakovsky	December 3, 1997	34-5463
Dexter's father tries to teach his son sports, but after realizing that Dexter is not athletic, he gives up.
34b	21b	"Koosalagoopagoop"	Genndy Tartakovsky	TBA	Dave Smith	December 3, 1997	34-5462
Dee Dee enters the land of her imaginary friend Koosalagoopagoop after he lies to her that he is the king of his land.
34c	21c	"Project Dee Dee"	Robert Alvarez	TBA	Chris Savino	December 3, 1997	34-5460
When Dexter learns that Dee Dee is trying to make a science project alone, he wants 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.
35a	22a	"Topped Off"	Genndy Tartakovsky	TBA	Chris Savino	January 14, 1998	34-5465
Dexter and Dee Dee experiment with coffee after seeing how it energizes their parents and soon become addicted to it.
35b	22b	"Dee Dee's Tail"	Rumen Petkov	TBA	Kevin Kaliher	January 14, 1998	34-5464
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.
35c	22c	"No Power Trip"	Rumen Petkov	TBA	Chris Battle	January 14, 1998	34-5466
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.
36a	23a	"Sister Mom"	Rob Renzetti and Genndy Tartakovsky	Paul Harrison	Craig McCracken	January 21, 1998	34-5461
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 his mother.
36b	23b	"The Laughing"	Robert Alvarez and Genndy Tartakovsky	Paul Harrison	Bryan Mailles and Genndy Tartakovsky	January 21, 1998	34-5452
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 gotten himself out of this eventually without her help. Dee Dee traps her ungrateful brother in a mime box.
37a	24a	"Dexter's Lab: A Story"	Genndy Tartakovsky	Sami Rank and Michael Ryan	Paul Rudish	January 28, 1998	34-5467
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.
37b	24b	"Coupon for Craziness"	Rumen Petkov	Sami Rank and Michael Ryan	Chris Savino	January 28, 1998	34-5476
Dexter finds the exact opposite of his family, a hyperactive boy who is like Dee Dee, and has scientist parents, 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.
37c	24c	"Better Off Wet"	John McIntyre	Sami Rank and Michael Ryan	Andy Bialk	January 28, 1998	34-5468
Dexter tries to avoid being pushed into the family's new swimming pool by his father, since he cannot swim and he is afraid of water.
38a	25a	"Critical Gas"	Rumen Petkov	Michael Ryan	Mike Stern	February 4, 1998	34-5474
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 just as he is about to do so, just when 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.
38b	25b	"Let's Save the World You Jerk!"	John McIntyre	Michael Ryan	Kevin Kaliher	February 4, 1998	34-5473
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.
38c	25c	"Average Joe"	Rumen Petkov	Michael Ryan	Dave Smith	February 4, 1998	34-5470
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.
39a	26a	"Rushmore Rumble"	Genndy Tartakovsky	Seth MacFarlane	Genndy Tartakovsky	February 11, 1998	34-5472
Dexter and Mandark bring the Abraham Lincoln and George Washington faces on Mount Rushmore to life and make them fight each other to determine who is the best.
39b	26b	"A Boy and His Bug"	John McIntyre	Seth MacFarlane	Genndy Tartakovsky	February 11, 1998	34-5471
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.
39c	26c	"You Vegetabelieve It!"	Rumen Petkov	Seth MacFarlane	Bob Staake	February 11, 1998	34-5475
Dexter's growth formula causes the plants in the garden to grow to an enormous size.
40a	27a	"Aye Aye Eyes"	Genndy Tartakovsky	TBA	Craig McCracken	February 18, 1998	34-5448
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.
40b	27b	"Dee Dee and the Man"	John McIntyre and Genndy Tartakovsky	TBA	Craig McCracken	February 18, 1998	34-5479
Dexter "fires" Dee Dee, only to realize that the chaos she causes has been helping him concentrate.
41a	28a	"Old Flame"	Genndy Tartakovsky	Michael Ryan	Paul Rudish	February 25, 1998	34-5480
Dexter brings the caveman who first discovered fire back from the past, who acts like Dee Dee and starts smashing the lab.
41b	28b	"Don't Be a Hero"	Rumen Petkov	Michael Ryan	Mike Stern	February 25, 1998	34-5483
Dexter tries to turn himself into a superhero, but gives up after every power he tries backfires.
41c	28c	"My Favorite Martian"	John McIntyre	Michael Ryan	Andy Bialk	February 25, 1998	34-5477
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.
42a	29a	"Paper Route Bout"	John McIntyre	Michael Ryan	Daniel Krall	March 4, 1998	34-5485
Dee Dee's father trains her to fight a gang of bicycle-riding rogues dressed as ninjas who target her paper route every morning. Note: Dexter does not appear in this episode.
42b	29b	"The Old Switcharooms"	John McIntyre	Michael Ryan	Kevin Kaliher	March 4, 1998	34-5485
Dexter's father makes him and Dee Dee switch each other's rooms as a 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 he is later grounded by his father for destroying Dee Dee's room 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.
42c	29c	"Trick or Treehouse"	Rumen Petkov	Michael Ryan	Dave Smith	March 4, 1998	34-5478
Dee Dee builds a treehouse and allows everyone inside except Dexter, in revenge for the numerous times he kicked her out of his lab.
43a	30a	"Quiet Riot"	Rumen Petkov and Genndy Tartakovsky	Michael Ryan	Chris Savino	March 11, 1998	34-5489
After working in his lab all night creating his latest invention, Dexter tries to get some sleep, but is constantly interrupted by Dee Dee.
43b	30b	"Accent You Hate"	John McIntyre	Michael Ryan	Dave Smith	March 11, 1998	34-5486
Dexter and his friends are targeted by a bully at school for their multicultural accents.
43c	30c	"Catch of the Day"	Rumen Petkov	Michael Ryan	Bob Staake	March 11, 1998	34-5487
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.
44a	31a	"Dad Is Disturbed"	John McIntyre	TBA	John McIntyre	March 18, 1998	34-5494
Dexter's father tries to watch a golf tournament, but is constantly interrupted by his wife, Dexter and Dee Dee. Note: Fred Flintstone, Barney and Betty Rubble make a cameo appearance in this episode.
44b	31b	"Framed"	Genndy Tartakovsky	TBA	Kevin Kaliher	March 18, 1998	34-5493
When Dexter's glasses break, 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.
44c	31c	"That's Using Your Head"	John McIntyre	TBA	Clayton Morrow	March 18, 1998	34-5488
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.
45a	32a	"DiM"	Genndy Tartakovsky	Michael Ryan	Craig McCracken	March 25, 1998	34-5501
Dexter makes an angst-ridden trip to the hardware store to buy a new light bulb for his lab. Note: This episode is almost dialogue-free; the only dialogue in the entire episode is Dexter's punch line at the end.
45b	32b	"Just an Old Fashioned Lab Song..."	John McIntyre	Michael Ryan	Dave Smith	March 25, 1998	34-5497
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.
45c	32c	"Repairanoid"	Rumen Petkov	Michael Ryan	Greg Miller	March 25, 1998	34-5498
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.
46a	33a	"Sdrawkcab"	John McIntyre	Seth MacFarlane	Clayton Morrow	April 1, 1998	34-5500
Dexter invents a belt whose wearer can do anything backwards, but mayhem occurs when Dee Dee gets hold of the belt's directional switch. Note: The credits appear before the title of the episode in tribute to the nature of the episode.
46b	33b	"The Continuum of Cartoon Fools"	Rumen Petkov and Genndy Tartakovsky	Seth MacFarlane	Don Shank	April 1, 1998	34-5499
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.
46c	33c	"Sun, Surf, and Science"	Rumen Petkov and Genndy Tartakovsky	Seth MacFarlane	Mike Stern	April 1, 1998	34-5491
Mandark enters a surfing contest and tries to cheat his way to victory to win Dee Dee's heart from another surfer. Note: Dexter does not appear in this episode.
47a	34a	"Big Bots"	Rumen Petkov and Genndy Tartakovsky	Seth MacFarlane	Craig McCracken	April 8, 1998	34-5469
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.
47b	34b	"Gooey Aliens That Control Your Mind"	Rumen Petkov and Genndy Tartakovsky	Seth MacFarlane	Todd Frederiksen and Genndy Tartakovsky	April 8, 1998	34-5481
Dexter's parents and Dee Dee have their minds taken over by an alien life form that escaped from Dexter's lab.
47c	34c	"Misplaced in Space"	Genndy Tartakovsky	Seth MacFarlane	Chris Savino	April 8, 1998	34-5481
A teleporter malfunction sends Dexter to an alien prison, prompting Dee Dee to go on a mission to save Dexter.
48a	35a	"Dee Dee's Rival"	Rumen Petkov and Genndy Tartakovsky	TBA	Chris Savino	April 15, 1998	34-5505
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.
48b	35b	"Pslyghtly Psycho"	John McIntyre and Genndy Tartakovsky	TBA	Daniel Krall	April 15, 1998	34-5504
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.
48c	35c	"Game for a Game"	Rumen Petkov	TBA	Greg Miller	April 15, 1998	34-5509
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.
49a	36a	"Blackfoot and Slim"	John McIntyre	Seth MacFarlane	Chris Savino	April 22, 1998	34-5496
A nature documentary team observes "Blackfoot" (Dexter) and "Slim" (Dee Dee) in their "natural habitat".
49b	36b	"Trapped with a Vengeance"	Genndy Tartakovsky	Seth MacFarlane	Todd Frederiksen and Genndy Tartakovsky	April 22, 1998	34-5490
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.
49c	36c	"The Parrot Trap"	Rumen Petkov and Genndy Tartakovsky	Seth MacFarlane	Mark O'Hare	April 22, 1998	34-5495
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.
50a	37a	"Dexter and Computress Get Mandark!"	John McIntyre	Tyler Samuel Lee	John McIntyre	April 29, 1998	34-5508
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,[9] the story follows Dexter and Mandark's robot "brother" Computress teaming up to make Mandark's head shrink.
50b	37b	"Pain in the Mouth"	Genndy Tartakovsky	TBA	Genndy Tartakovsky	April 29, 1998	34-5503
When Krunk gets a tortilla chip stuck in his tooth, Major Glory decides to fix it by pulling the tooth out himself.
50c	37c	"Dexter vs. Santa's Claws"	Rumen Petkov and Genndy Tartakovsky	TBA	Kevin Kaliher	April 29, 1998	34-5502
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.
51a	38a	"Dyno-Might"	Genndy Tartakovsky	Michael Ryan	Paul Rudish	May 6, 1998	34-5492
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, he was a more helpful partner than the one Dexter created for him.
51b	38b	"LABretto"	Genndy Tartakovsky	Michael Ryan	David Smith	May 6, 1998	34-5507
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"	Genndy Tartakovsky	TBA	Paul Rudish, Craig McCracken, and Genndy Tartakovsky	June 15, 1998	34-5506
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. Note 1: The title is a play on the phrase, "last but not least", indicating this was intended to be the series finale, until the series revived in 2001 for a third season. Note 2: This episode spoofing anime, Voltron, the Super Sentai/Power Rangers genre and kaiju films (primarily Godzilla or Gamera), it is also the series' first full episode-length story with a huge reference to Japanese popular culture and Japanese culture.

"Rude Removal"

An episode segment from the second season named "Rude Removal" was produced, but ended up getting banned before airing on television, due to excessive, censored cursing, as well as an inappropriate title card. However, it was ultimately released to the public in January 2013 on the official YouTube page of Adult Swim.

Title	Directed by	Storyboarded by	Release date
"Rude Removal"	Rob Renzetti	Chong Lee and Craig McCracken	February 21, 1998 (World Animation Celebration) January 22, 2013 (Online)[3][lower-alpha 1]
Dexter plans to remove Dee Dee's rudeness with his latest invention, the "Rude Removal System". The siblings inadvertently end up inside the device, which splits the pair into two copies, one well-behaved and the other rude.

Season 3 (2001–02)

No. in series	No. in season	Title	Directed by	Storyboarded by	Original air date
53a	1a	"Streaky Clean"	Robert Alvarez and Chris Savino	Walt Dohrn	November 16, 2001
Dexter creates a satellite to clean stains off of his clothes, but it goes horribly wrong when another satellite hits the satellite that Dexter created and the satellite becomes damaged, causing the fabric beneath each stain to be eliminated as well.
53b	1b	"A Dad Cartoon"	John McIntyre and Chris Savino	John McIntyre	November 16, 2001
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. Note: Dexter and Dee Dee do not appear in this episode.
53c	1c	"Sole Brother"	John McIntyre and Chris Savino	Clayton McKenzie Morrow	November 16, 2001
Dexter accidentally becomes Dee Dee's foot when the two fuse together. Now, they have to wait 24 hours to reverse the fusion.
54a	2a	"Mind Over Chatter"	Robert Alvarez and Chris Savino	Cindy Morrow	November 18, 2001
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.
54b	2b	"A Quakor Cartoon"	Chris Savino	Chris Savino	November 18, 2001
Quackor returns to battle Monkey in Dexter's Lab until Quackor lays an egg; then the two fall in love.
54c	2c	"Momdark"	John McIntyre and Chris Savino	Cindy Morrow	November 18, 2001
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.
55a	3a	"Copping an Aptitude"	John McIntyre and Chris Savino	Kevin Kaliher	December 7, 2001
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.
55b	3b	"A Failed Lab Experiment"	Chris Savino	Chris Savino	December 7, 2001
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.
55c	3c	"The Grand-Daddy of All Inventions"	John McIntyre and Chris Savino	Clayton McKenzie Morrow	December 7, 2001
During a trip to his grandfather's house, Dexter learns that the outwardly boring old man has a lab just like his own.
56a	4a	"Poppa Wheely"	John McIntyre and Chris Savino	Mike Stern	January 18, 2002
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. Note: This is the first episode to feature Candi Milo as the voice of Dexter.
56b	4b	"A Mom Cartoon"	Chris Savino	Chris Savino	January 18, 2002
Dexter's mom fights another woman at the supermarket for some new latex gloves. Note: Dexter, Dee Dee, and Dad do not appear in this episode.
56c	4c	"The Mock Side of the Moon"	John McIntyre and Chris Savino	Clayton McKenzie Morrow	January 18, 2002
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.
57a	5a	"If Memory Serves"	Robert Alvarez and Chris Savino	Cindy Morrow	February 22, 2002
To keep himself from forgetting anything important, Dexter uses a device to copy his memories, which causes a mayhem in his own head.
57b	5b	"A Mandark Cartoon"	Chris Savino	Chris Savino	February 22, 2002
Mandark plans another scheme to get rid of Dexter. Everything in this cartoon is to the tune of Mandark's trademark laugh.
57c	5c	"Tele Trauma"	John McIntyre and Chris Savino	John McIntyre	February 22, 2002
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. Note: This is the last episode to feature Christine Cavanaugh as the voice of Dexter.
58a	6a	"A Boy Named Sue"	John McIntyre and Chris Savino	Walt Dohrn	March 29, 2002
Mandark's birth and origins as the child of hippies are revealed, as is the beginning of his rivalry with Dexter.
58b	6b	"Lab on the Run"	John McIntyre and Chris Savino	David Smith	March 29, 2002
Two robots escape from Dexter's lab in order to have a better life and avoid Dexter's totalitarian rule. Note: Special guest appearances by Martin Mull and Fred Willard.
59a	7a	"Dos Boot"	Chris Savino	Walt Dohrn	June 7, 2002
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.
59b	7b	"A Dee Dee Cartoon"	Robert Alvarez and Chris Savino	Anna Chambers	June 7, 2002
Dee Dee goes and plays in her own "lab" after being kicked out of Dexter's.
59c	7c	"Would You Like That in the Can"	John McIntyre and Chris Savino	Paul McEvoy	June 7, 2002
Dexter and his friend Douglas Mordecai must enter the girls' bathroom to retrieve Dexter's lunchbox, which was put in there by another student.
60a	8a	"That Magic Moment"	John McIntyre and Chris Savino	Paul McEvoy	June 14, 2002
Dexter's Magic Uncle Fergel O'Reilly (Mark Hamill) pays a visit to the family.
60b	8b	"A Silent Cartoon"	Chris Savino	Chris Savino	June 14, 2002
Dexter is trying to paint his lab blue, but Dee Dee wants to make it pink.
60c	8c	"Opposites Attract"	Chris Savino	Andrew Bialk	June 14, 2002
Dexter creates a magnetic field to keep Dee Dee away from him, but it malfunctions, causing them to stick together.
61a	9a	"Comic Relief"	Chris Savino	Clayton McKenzie Morrow	June 21, 2002
Dexter creates a device to make a lifelike superhero comic, with his sister villain "Deestructa".
61b	9b	"A Third Dad Cartoon"	Chris Savino	Chris Savino	June 21, 2002
Dexter's father plays golf with his kids.
61c	9c	"Robo Dexo 3000"	John McIntyre and Chris Savino	Kevin Kaliher	June 21, 2002
Dexter creates the ultimate robot to replace his previous model.
62a	10a	"Glove at First Sight"	Robert Alvarez and Chris Savino	Cindy Morrow	June 28, 2002
Dexter's parents remember their first date and dance together.
62b	10b	"A Mom & Dad Cartoon"	Chris Savino	Cindy Morrow	June 28, 2002
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.
62c	10c	"Smells Like Victory"	John McIntyre and Chris Savino	Paul McEvoy	June 28, 2002
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.
63a	11a	"Oh, Brother"	Chris Savino	Greg Miller and Walt Dohrn	July 5, 2002
Dexter turns Dee Dee into a boy, but is disappointed when "he" is not as cool as Dexter would like it.
63b	11b	"Another Dad Cartoon"	Chris Savino	Cindy Morrow	July 5, 2002
With everyone out of the house, Dexter's father decides to spend the time dancing.
63c	11c	"Bar Exam"	John McIntyre and Chris Savino	Shellie Kvilvang	July 5, 2002
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.
64a	12a	"Jeepers, Creepers, Where Is Peepers"	David Smith	David Smith	July 12, 2002
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.
64b	12b	"Go, Dexter Family! Go!"	John McIntyre and Chris Savino	Walt Dohrn	July 12, 2002
Dexter's family must rescue him from aliens.
65a	13a	"Scare Tactics"	John McIntyre and Chris Savino	Walt Dohrn	September 20, 2002
After watching a horror film, Dexter and his father become easily frightened.
65b	13b	"A Mom Cartoon"	Chris Savino	Chris Savino	September 20, 2002
Rerun of episode 56b.
65c	13c	"My Dad Vs. Your Dad"	John McIntyre and Chris Savino	Cindy Morrow	September 20, 2002
Dexter and Mandark's fathers become embroiled in a conflict after trying to defuse one between their sons.

Season 4 (2002–03)

No. in series	No. in season	Title	Directed by	Written and storyboarded by	Original air date
66a	1a	"Beau Tie"	Don Judge and Chris Savino	Walt Dohrn	November 22, 2002
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.
66b	1b	"Remember Me?"	Chris Savino	Kevin Kaliher	November 22, 2002
When Dexter gets amnesia, Dee Dee decides to play tricks on him by creating a whole new identity for him in her image.
66c	1c	"Overlabbing"	Don Judge and Chris Savino	Clayton McKenzie Morrow	November 22, 2002
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.
67a	2a	"Sis-Tem Error"	Don Judge and Chris Savino	Mark O'Hare	April 25, 2003
Dee Dee accidentally shuts down Dexter's lab, and he has to power it back up. In the process, Dee Dee attempts to keep Dexter from finding out what she really did.
67b	2b	"Bad Cable Manners"	Chris Savino	Clayton McKenzie Morrow	April 25, 2003
Dexter provides cable for his father.
67c	2c	"Dexter's Library"	Don Judge and Chris Savino	Mark O'Hare	April 25, 2003
Dexter becomes the stern administrator of his local library.
68a	3a	"The Scrying Game"	Chris Savino	Mike Stern	May 2, 2003
Dee Dee learns a new game that can predict the future events.
68b	3b	"Monstrosi-Dee Dee"	Don Judge and Chris Savino	Gabe Swarr	May 2, 2003
When Dee Dee eats a contaminated apple, she turns into a monster every time when she tells Dexter what to do.
68c	3c	"Dad Man Walking"	Don Judge and Chris Savino	Carlos Ramos	May 2, 2003
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.
69a	4a	"Dexter's Little Dilemma"	Don Judge and Chris Savino	Clayton McKenzie Morrow	May 9, 2003
Dexter shrinks his parents and puts them into a model of their house for observation.
69b	4b	"Faux Chapeau"	Don Judge and Chris Savino	Chris Reccardi	May 9, 2003
Dexter's newest invention looks like a hat, so Dee Dee takes it and wears it around town.
69c	4c	"D²"	Tim Walker and Chris Savino	Mark O'Hare	May 9, 2003
Dexter and Dee Dee realize that they make a good team, so they decide to do stuff together, but doing so makes things worse.
70a	5a	"Head Band"	Don Judge and Chris Savino	Kevin Kaliher	May 16, 2003
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.
70b	5b	"Stuffed Animal House"	Chris Savino	Gabe Swarr	May 16, 2003
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 Dexter's dismay.
70c	5c	"Used Ink"	Don Judge and Chris Savino	Carlos Ramos	May 16, 2003
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.
71a	6a	"School Girl Crushed"	Don Judge and Chris Savino	Charlie Bean	May 23, 2003
Dexter and Mandark are both outperformed by a new girl at school, so they reluctantly team up to get rid of her.
71b	6b	"Chess Mom"	Don Judge and Chris Savino	Charlie Bean	May 23, 2003
Dexter's mother attempts to support him during a chess tournament but does nothing but embarrass him.
71c	6c	"Father Knows Least"	Don Judge and Chris Savino	Carlos Ramos	May 23, 2003
Dexter's father is left to watch the kids while his wife visits her sister.
72a	7a	"Dexter The Barbarian"	Chris Savino	Chris Savino	May 30, 2003
Dexter tries to emulate the barbarian hero of his favorite comic book.
72b	7b	"Tuber Time"	Don Judge and Chris Savino	Mark O'Hare	May 30, 2003
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.
72c	7c	"Sore Eyes"	Don Judge and Chris Savino	Bill Wray	May 30, 2003
Dexter tries to improve his eyesight by giving himself laser eye surgery, but goes too far in doing so.
73a	8a	"Babe Sitter"	Robert Alvarez and Chris Savino	Mark O'Hare	September 5, 2003
Dee Dee is hired by Mandark's parents to babysit him.
73b	8b	"Mountain Mandark"	Don Judge and Chris Savino	Kevin Kaliher	September 5, 2003
Mandark gets in touch with nature.
73c	8c	"2Geniuses 2Gether 4Ever"	Don Judge and Chris Savino	Clayton McKenzie Morrow	September 5, 2003
Dexter decides to work with Mandark, but finds himself doing all of the work.
74a	9a	"Height Unseen"	Don Judge and Chris Savino	Kevin Kaliher	September 12, 2003
Again tired of being short, but mindful of his past failures, Dexter decides to make everyone shorter than himself.
74b	9b	"Bygone Errors"	Robert Alvarez and Chris Savino	Clayton McKenzie Morrow	September 12, 2003
An elder Dexter talks about the glory days, and his sister is still there to inject her opinions, telling him what really happened.
74c	9c	"Folly Calls"	Don Judge and Chris Savino	Bobby London	September 12, 2003
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.
75a	10a	"Voice Over"	Robert Alvarez and Chris Savino	Charlie Bean	September 19, 2003
When Dexter's computer gets laryngitis, Dexter must find a replacement voice.
75b	10b	"The Blonde Leading the Blonde"	Don Judge and Chris Savino	Aaron Springer	September 19, 2003
Dexter refuses to admit that blondes have more fun, so Dee Dee secretly dyes his hair blond to prove it to him.
75c	10c	"Comic Stripper"	Don Judge and Chris Savino	Chris Reccardi	September 19, 2003
Dexter finds out that all of Mandark's plans are taken from a comic book.
76a	11a	"Tee Party"	Don Judge and Chris Savino	Aaron Springer	September 26, 2003
Dexter and his father enter a golf tournament, but Dexter's father proves inept at the sport.
76b	11b	"Dexter's Wacky Races"	Don Judge and Chris Savino	Chris Reccardi	September 26, 2003
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.
77a	12a	"The Lab of Tomorrow"	Don Judge and Chris Savino	Charlie Bean	November 4, 2003[lower-alpha 2]
Monkey narrates a documentary of the future of laboratories and sciences.
77b	12b	"Chicken Scratch"	Genndy Tartakovsky	Genndy Tartakovsky	July 3, 2002[lower-alpha 3]
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. Note: This short was first shown in theaters on July 3, 2002, right before The Powerpuff Girls Movie.[10]
77c	12c	"Garage Sale"	Don Judge and Chris Savino	Clayton McKenzie Morrow	November 4, 2003[lower-alpha 4]
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.
78a	13a	"They Got Chops"	Chris Savino	Kevin Kaliher	November 20, 2003
When Dee Dee's Judo skills prove too much for Dexter, Dexter learns how to fight back at the same dojo she went to.
78b	13b	"Poetic Injustice"	Robert Alvarez and Chris Savino	Mark O'Hare	November 20, 2003
Dexter falls in love with a new girl at his school, but cannot win her heart.
78c	13c	"Comedy of Feathers"	Genndy Tartakovsky and Chris Savino	Genndy Tartakovsky	November 20, 2003
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. In the end, Dee Dee and the ostrich switch places.

TV movie (1999)

Title	Directed by	Story by	Storyboarded by	Original air date
"Dexter's Laboratory: 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[11]
After Dexter battles an army of robots who enter his laboratory through his time machine, he travels forward in time in search of the moment when his older self will save the future.

Notes

1. Never aired on television. The online premiere, courtesy of Adult Swim, designated this episode as TV-14-L.
2. "Chicken Scratch" appeared in theaters as a bonus short before The Powerpuff Girls Movie on July 3, 2002.
3. "Chicken Scratch" appeared in theaters as a bonus short before The Powerpuff Girls Movie on July 3, 2002.
4. "Chicken Scratch" appeared in theaters as a bonus short before The Powerpuff Girls Movie on July 3, 2002.

References

1. Beller, Miles (April 25, 1996). "TV Review; 'Dexter's Laboratory'". The Hollywood Reporter (BPI Entertainment News Wire).
2. Godfrey, Leigh (November 16, 2001). "Dexter Goes Global in Worldwide Marathon". Animation World Network. Retrieved 2013-06-05.
3. "Dexter's Lab: Dexter's Rude Removal". Adult Swim. January 22, 2013. Retrieved 2013-01-22.
4. Lacey, Gord (October 29, 2010). "Dexter's Laboratory — Season 1 Review". TVShowsOnDVD.com. Retrieved 2013-01-20.
5. Moore, Scott (February 26, 1995). "Creative 'World Premiere Toons'". The Washington Post. The Washington Post Company. Retrieved 2011-05-14.
6. "Public Catalog". United States Copyright Office. Retrieved 2013-11-19. Search for "Dexter's Laboratory no." to bring up a catalog of copyright pages for season 2 episodes. Includes title, production code, director(s), date of creation, and date of publication.
7. Boedecker, Hal (July 14, 1997). "Cartoon Network Zany Relief". Orlando Sentinel (Tribune Company). Retrieved 2013-01-22.
8. Klein-Häss, Michelle (March 1998). "Thinking About the World Animation Celebration '98". Animation World Magazine (2.12). Retrieved 2013-04-22.
9. Parks, Steve (April 28, 1998). "A Kid Calls The 'Toon / Only 7, LI boy's carton idea makes it to TV". Newsday – Long Island, NY. Retrieved 2011-05-14.
10. Vice, Jeff (July 6, 2004). "Film Review: Powerpuff Girls Movie, The". Deseret News. Retrieved 2013-01-24.
11. DeMott, Rick (December 1, 1999). "Cartoon Network to air Dexter's Lab Special". Animation World Network. Retrieved 2013-01-23.

External links

• List of Dexter's Laboratory episodes at TV.com
• List of Dexter's Laboratory episodes at Epguides