Dexter and Dee Dee test his latest invention: a device that turns people into animals, which yields...

When Dee Dee eats an experimental cookie of Dexter's design, she grows extremely tall and makes the...

Dexter wants to use his Hydro-Cosmetic Accelerator to age himself enough so he could watch late nigh...

After working himself too hard, Dexter's brain snaps.

When Dexter is attacked by Robots hunting "The one who saved the future", he becomes fascinated by t...

Dexter invents the Rude Removal System, a machine to remove the rudeness from Dee Dee.

In "Deedeemensional", Dee Dee time-travels to save Dexter from a monster. In "Magmanamus", Monkey go...

Monkey must defend the city from a giant underground lava monster, Magmanamus, who cannot sleep beca...

When his mother falls ill, Dexter creates a robot to do her chores. Dee Dee gets hold of its remote...

Dexter is forced to play dodgeball by his P. E. teacher. Constantly failing, Dexter builds a robotic...

Intergalactic wrestling champion Rasslor challenges Earth's superheroes, including Monkey, with the...

In need of an assistant to operate his latest invention, Dexter performs a brain transplant on Dee D...

Mandark Astronomanov, a new student at Dexter's school, seems to be superior to Dexter academically....

Monkey encounters Simion, an intelligent anthropomorphic chimpanzee who seeks vengeance on humans fo...

Banned from watching a late-night movie due to his young age, Dexter uses his technology to artifici...

Dee Dee and her friends, Lee Lee and Mee Mee, enter Dexter's lab and wreak havoc. Dexter clones hims...

Monkey's birthday party is interrupted by Barbequor an intergalactic villain who plans to eat the pl...

Rerun of "Dexter's Laboratory", the first "What a Cartoon!" pilot.

To clone a dinosaur with an incomplete DNA sequence, Dexter uses his dog's genetic code to fill in t...

While on a date with Agent Honeydew, Monkey gets hypnotized by the music of the Organ Grindor who co...

Due to overworking his brain, Dexter's mind shuts down, making him act idiotic.

After Dee Dee steals his critical invention, Dexter ventures into her room to find it.

Monkey encounters an alien hunter named Huntor and must fight him to save Agent Honeydew and Command...

Rerun of the second "What a Cartoon!" pilot.

Dexter and Dee Dee enter tryouts to become Major Glory's sidekick. When Dee Dee wins, Dexter realize...

With only one television in their apartment, Major Glory, Krunk, and Valhallen disagree on what to w...

Dexter and Dee Dee's father buys a video game for them to play, but the game sucks Dexter inside whe...

Dexter has a crush on his teenage babysitter Lisa. When he finds out that she has a boyfriend, he sa...

Valhallen loses his magic ax and starts turning into a nerd, forcing Major Glory and Krunk to enter...

When Dexter's nightmares become frequent and problematic, he invents a machine that allows him to ha...

Suspicious that Dee Dee has not entered his lab even once on a particular day, Dexter shrinks himsel...

While fighting Comrade Red and his gang, Krunk falls in love with his equivalent in their gang, She-...

Dexter's new device allows him to study for the next day's French test while sleeping. It malfunctio...

Dee Dee teaches Dexter how to live life her way instead of being lonely and purely focused on scienc...

Major Glory forces Krunk and Valhallen to tidy up their apartment for his Uncle Sam, who is coming o...

To learn more about girls, Dexter camouflages himself and enters Dee Dee's room, where she is having...

To prevent himself from being taken away by aliens for experimentation, Dexter tricks Dee Dee into g...

To fix their apartment's plumbing, Krunk and Valhallen go to the basement, where they meet Ratman, a...

Dexter's lab is threatened with repossession unless he can repay his debt to NASA. When Dee Dee wins...

Major Glory, Krunk, and Valhallen try to rid their apartment of a bee.

Following the destruction of his lab by Dexter and Dee Dee (in the episode Dexter's Rival), Mandark...

Dee Dee inflates Dexter's hydro-plasmatic suit and constantly floats in the air, prompting Dexter to...

After fellow Justice Friend White Tiger helps Valhallen stop a super-villain, the latter invites him...

Not interested in hearing Dee Dee's long-winded story, Dexter gives her a silencing formula to keep...

After a fright from Dee Dee, Dexter lays down in the beard growing machine and tries to grow a beard...

Mandark doesn't know that his pet duck is really Quackor the Fowl, Monkey's rival. Quackor overhears...

Dexter prevents Dee Dee from destroying some ants. In order to teach her about ants, Dexter and Dee...

Dexter switches his brain with a mouse, and must avoid his mother when she decides to exterminate hi...

At the Chubby Cheese pizza restaurant, Dexter wears a Chubby Cheese hat and tries to slow down the W...

One of Dexter's robots becomes Dee Dee's servant when she removes a wrench that froze him up, but th...

When Dexter's friends tire of the complicated traps he sets up as Dungeon Master (he has their chara...

Dexter's father gets challenged to an arm wrestling match against a local champion at a truck stop,...

Dexter uses radiation therapy so he can like vegetables, it actually causes him to only eat vegetabl...

Dee Dee's imaginary friend comes to life and annoys Dexter. Dexter ends up wishing him away, then he...

Dexter oversleeps and still has to finish his homework along with getting ready for school and eatin...

Dee Dee Locks and the Ness Monster—Dexter's mother forces Dexter to read to Dee Dee when she's sick,...

Dexter fuses Dee Dee with the family car by accident, causing mayhem. A Parody of Herbie the Love Bu...

Dexter accidentally takes a library book without checking it out, so he and Dee Dee try to put it ba...

Dee Dee's new dance annoys Dexter to no end.

Dexter calls upon the "shoe gnomes" to repair his boots, but can't rid himself of them afterwards. T...

Dexter ends up in the "old part of the lab" where his earliest inventions, long since forgotten, are...

Dexter and Dee Dee label everything in the house. When their parents get home, they mistake Dexter f...

Dexter and Dee Dee compete against each other on a game show. Where Dexter can't seem to win.

Dexter tries to inject himself into Dee Dee to find a cure to the common cold, but ends up inside hi...

When Dee Dee refuses to flush their gold fish down the toilet, the ghost of the fish haunts them.

Dee Dee and Dexter win a free pass to Professor Hawk's magic factory after finding the golden disket...

Dad encourages Dexter to become the king of snow, as he was in his early days, until someone beated...

In an attempt to be popular with his ""friends"", Dexter makes his own Mayor Glory Action Figure.

In a whole parody of ""Speed Racer"", Dexter and Mandark compete on a race.

Dexter can't get into a roller coaster because he's too small so he makes himself taller.

Dee Dee steals the nuclear atom that Dexter needs to make his invention work, but she doesn't know t...

Everybody except Dexter gets sick, so he makes himself a plastic bubble to get germ protection.

It's not a great day for science when Dexter has bad luck due to the position of the stars.

Mom makes Dexter go outside and ride a bike, thing that turns into a Dexter-Dee Dee chase.

While at the beach, Dee Dee (who's wearing a mermaid swimsuit) gets captured by a maniac sailor so D...

Dexter must go to the back of the school bus to retrieve his pencil, where another kid got lost year...

Krunk stays awake all night watching The Puppet Pals Show Marathon, so his brain starts playing him...

Dexter is sent to summer camp, in a place far away from civilization.

While the family is at the woods, Dexter goes searching for the Mighty Bigfoot, if Dee Dee doesn't f...

Dee Dee photographs Dexter's secret lab.

Dexter and two friends go to the Star Check Convention, but certain confusion might send them to a d...

To avoid the bath, Dexter decides to laminate himself.

Dexter will do anything to make the ice cream vendor stop to get some ice cream.

Dexter and Dee Dee get their Action Hank and Pony Puff Secret Codes mixed up.

Dexter newest creation gives Mom super powers.

Dexter's robot takes over his lab.

Dexter heals a turtle by giving him loads of modern, techno stuff.

Dexter makes himself invisible to make sure Mom and Dad give him what he wants for his birthday, the...

Dexter and Dee Dee go to South America in order to find the chupacabras, an animal that Dexter creat...

Dee Dee, who's not exactly good at singing, gets Dexter's help on getting a better voice, but not th...

When Dexter's favorite show gets interrupted by an emergency, he searches all town trying to find it...

Dexter and Dee Dee go to the dumps to retrieve Dee Dee's lost teddy bear.

Dexter and Dee Dee get trapped with a Finger trap.

Dexter and Dee Dee must stop Dad from eating Mom's muffins.

Dexter finds out he's ugly, so he transforms his face to look better for the school photo.

Dexter combines himself with bubble gum to become more stretchable.

Dexter is send to detention after a confusion during a test.

Dexter and Dee Dee want to become older, but instead they make everyone else a baby.

A new female villian named Peltra wants Monkey's Coat.

Dee Dee, LeeLee and MeeMee become crimefighters, but of course they will not actually fight crime.

Dad wants to show Dexter the joy of sports.

Koosy tells Dee Dee that he is the king of the land of Koos, but when Dee Dee goes there...

Dee-Dee refuses any kind of help from Dexter on her science project, when Dee-Dee shows Dexter her s...

Surprised of the results coffee causes on Mom and Dad, Dexter and Dee Dee decide to try it themselve...

Dexter uses his science to turn Dee Dee into a horse.

Dexter overloads the energy of the laboratory, so he makes numerous tries to reload it.

After Dexter did something really bad at school, he gets her mother called, so to not ruin his reput...

After Dexter gets bitten by a clown, he turns into one every night.

On his way home, Dexter gets followed by a labrador, when he teaches him to speak, the dog becomes e...

A confusion at the supermarket makes Dexter go home with a different, yet extremely scientific, fami...

Dexter is afraid of taking a dive at the pool because Dad always pushes him.

After Dexter eats a giant burrito he believes he's going to die, so he makes a list of everything he...

Dexter and Mandark must team up in order to save the Earth from a meteor rain.

After an I.Q. test defines Dexter as ""average"", he decides to live an average life hanging out wit...

Dexter and Mandark mechanize the giant figures of Lincoln and Washington from the Mount Rushmore sta...

Dexter creates a small bug that eats all the scrap metal caused by Dee Dee's destruction.

Dexter's untested formula causes all plants in the garden to become dangerous.

After Dexter returns a bunny to a little girl with big round eyes, she starts following Dexter every...

After Dexter ""fires"" Dee Dee, he realizes that his lab needs chaos.

Dexter travels to the past to meet the caveman that discovered fire.

Dexter attempts to make numerous accidents to get super powers.

Dexter goes to Mars to find alien life forms.

Dee Dee and the Ninja Clan battle for who delivers the newspapers in the neighborhood.

After Dexter and Dee Dee destroy Dad's bowling trophy, they are sent to each other's room.

Dee Dee builds a treehouse in the garden and Dexter can't stop wondering what's up there.

Dexter worked all night on his inventions so all he wants is some sleep, but Dee Dee will make sure...

Dexter and his friends Lucky and Pierre(¿?) are victims of a bully that hates kids with funny accent...

Numerous factors like getting up early, being the first ones there, fishing clothes and other acceso...

Constant interruptions by Dexter, Dee Dee and Mom will not let Dad watch his golf game.

After Dexter breaks his glasses, he starts a new fashion at school.

Dexter meets a bum at an appliance store with a strange device on his head.

Dexter goes to the appliance store to buy a lightbulb for his lab.

Dexter takes piano classes from a man that looks a lot like Paul Williams.

When an electricist comes to repair the house, Dexter discovers that if he repairs the lab it will f...

Dexter creates a belt that can have its wearer do everything backwards, only to get in trouble when...

Dee Dee keeps getting into Dexter's lab even though Dexter keeps throwing her out.

Mandark tries to impress Dee Dee by getting into a surfing contest.

Dexter makes Dee Dee a robot for herself, at the same time a volcano is going to burst on an island...

Dexter must save his family after they get possesed by aliens.

Dee Dee must save Dexter who is a slave in a distant galaxy.

Dee Dee and Lalavava (Mandark's sister), compete on a ballet contest.

It's Mother's Day and Mom can't take that Dad, Dee Dee and Dexter do all the housework.

Dexter and Dee Dee compete in various games chosen by Dexter.

A documentary shows the secret lives of Dexter and Dee Dee, also known as Blackfoot and Slim.

Dexter stays at school too much, forcing the janitor to stay as well, so he waits for a day in which...

Dexter must stop his mechanical parrot before his imitations reveal the secret of his lab.

Dexter and Computress team up in order to shrink Mandark's head.

Krunk gets a nacho stuck in his tooth and Mayor Glory wants to take it out himself while Valhallens...

Dexter must prove to Dee Dee that Santa Claus doesn't exist.

When Blue Falcon appears with a destroyed Dynomutt, Dexter decides to build a new one.

The story of how Dexter was born and how he built his lab, in the style of a musical.

Dexter must save Japan from being destroyed by a monster, but his robot must be controlled by four p...

Dexter creates a device to keep his clothes clean.

Dad decides to give the car a retouch.

After a failed mutation experiment, Dexter becomes Dee Dee's foot.

Dexter uses a device to listen to what Dad is thinking, but the experiment backfires and everyone el...

Quackor returns to battle Monkey in Dexter's Lab.

Mandark disguises as Mom in order to get into Dexter's Lab.

Because of his exceptional grades Dexter's school and parents have decided that he can go to college...

Dexter creates a device taht doesn't work the way he wanted.

Dexter's mom takes him to his grandpa's house. At first he thinks it's going to be a boring day unti...

It's career day and Dexter is ashamed of his Dad so he creates a Dad that looks more like him.

Mom spends a day at the supermarket.

Dexter travels to the moon and finds aliens that are planning to come to Earth to take everything.

Fearing that his memory might be limited, Dexter uses a device to save all his memories.

Mandark plans another scheme to get rid of Dexter.

Tired of missing his favorite TV shows because of studying, Dexter creates a special helmet that abs...

How did a young child called Susan became the being now known as Mandark? Born to free spirits, and...

Two robots escape from Dexter's lab in order to have a better life.

Mandark gets in Dexters computer raving havok, so Dexter must stop him.

After being kicked out of Dexter's Lab (AGAIN) She goes and plays in her ""lab"".

A girl accidentally takes Dexter's lunchbox, so Dexter and his friend must go into the girls bathroo...

Dexter's Magic Uncle Ferger 'O Reiley pays a visit.

Dexter is trying to build his lab blue, but Dee Dee keeps making it pink.

Dexter creates a magnetic field to keep Dee Dee away from him.

Dexter creates a special device that lets him create his own life-like superhero comic... along with...

Dad goes with the kids to play some golf.

Dexter creates the ultimate robot (RoboDexo 3000) to replace his previous 200 model.

Mom and Dad recall the moments that got them together.

Mom and Dad are having a discussion while playing scrabble, a discussion that Dexter and Dee Dee don...

The U.S. army invades Dexter's lab and Dexter fights them, each side thinking the other is a troop o...

Dexter uses his newest creation to turn Dee Dee into a boy, but the male version of Dee Dee (Doo Dee...

While Mom, Dexter and Dee Dee are out shopping, Dad decides to spend the afternoon dancing... like T...

Dexter must pass a physical bar exam if he wants to pass P.E.

Dexter and Koosy must save Peepers, otherwise the whole land of Koz will disappear.

Dexter and his family are kidnapped by aliens, Dexter leads his family in an escape attempt, but whe...

Dexter and Dad watch a late night horror movie and spend a scary night in their house.

Both Dexter and Mandark's fathers intercede during another of Dexter and Mandark's petty squabbles,...

Dee-Dee has a new boyfriend who also likes science and Einstein, and soon the boy finds himself caug...

Dexter is hit by a wrench while working on a device, and suffers amnesia, Dee Dee decides to mess wi...

Dexter and Mandark drill underground to expand their labs, but end up overlapping each other's work....

Dee Dee accidentally breaks down Dexter's lab, and she tries to not and let him know its broken.

Dad wants cable really bad, so Dexter illegally pirates cable for him.

When Dexter becomes the head of a library, he inforces the rules really hard, driving everyone crazy...

Dee Dee learns a new game that can ""predict peoples futures"". She uses it on Dexter, and finds ou...

A Monster starts roaming Dexter's lab, although Dexter doesnt know its just Dee Dee, who ate an appl...

Dexte'rs father begins to sleepwalk, and accidently stumbles into Dexter's Lab

Dexter accidentally shrinks his parents, and puts them into a model of there house. Although the ho...

Dexter creates a new invention and wears it on his head. It suddenly becomes the latest fashion craz...

Dexter and Dee Dee realise when they work together, they make a pretty good team.

Dee Dee has a song stuck in her head. Literally.

Dee Dee's stuffed animals come to life and roam the house. Dee Dee and Dexter must get them before M...

Dexter creates an ink in which lets him command them to do whatever he wants them to do. Although wh...

Decxter and Mandark are both outperformed by a new girl attending the school, jealous, they become a...

Mom thinks she should spend quality time and watch Dexter in his chess comatition. Although, she re...

Dad gets fired from his job, and has to do the same job Mom does. He realises it isnt as easy as it...

Dexter goes on a quest. His quest is to reach the bathroom before he explodes.

When Dexter realises the power of the potato, he redesigns his lab to work on it.

Dexter is tired of wearing glasses, so he uses laser surgery on his eyes to make him have 1/20 visio...

Dee Dee goes over to Mandark's house to baby sit him, and Mandark likes that idea.

Mandark drops technology and starts being more in touch with nature.

Dexter decides its better if him and Mandark work together, although in the end Dexter does all the...

Dexter is tired of being short, since his old plan of growing himself didnt work, he decides to make...

This takes place in the future, where Old Man Dexter tells about his ""glory days"". And Old lady D...

When Dee Dee accidentally chops off her pigtail, Dexter gives her some hair growth potion. Although...

When Dexter's Computer gets Laryngitus, Dexter must find a replacement voice for her.

Dexter refuses to see that blonde's have more fun, so he dyes Dee Dee's hair to prove it.

Dexter finds out that all of Mandark's plans are taken from a comic book. This way, he can get read...

Dexter and his dad enter a Golf tournament, with Dad eager to get his hands on the Trophy, but there...

Dexter, Monkey, The Justice Freinds, Dee-Dee, her imaginary freind Coosie, Mandark, his parents, and...

Monkey narrates a documentry of the future of Laboratories and sciences.

Dexters parents accidentally sell Dexter's latest invention, and it is bought by Mandark.

Dee Dee starts layin' down the Judo on Dexter, then Dexter learns how to fight back.

Dexter falls in love with a new girl at his school, but decides to impress her with poetry rather th...

When Dee Dee sees an Ostrage at the Zoo, she wants one of her own as a pet.