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

Dee-Dee refuses any kind of help from Dexter on her science project, when Dee-Dee shows Dexter her show-and-tell product, he criticises it heavily and offers his own..contributions

Dexter, Monkey, The Justice Freinds, Dee-Dee, her imaginary freind Coosie, Mandark, his parents, and Dexter's Parents participate in a cross-country race

Dexter's robot takes over his lab.

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

Dee Dee steals the nuclear atom that Dexter needs to make his invention work, but she doesn't know that it will explode if Dexter doesn't find it on time.

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

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

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

Dee Dee photographs Dexter's secret lab.

Dexter must save Japan from being destroyed by a monster, but his robot must be controlled by four people to function correctly, so Dexter must tell Dee Dee... and his parents.

To avoid the bath, Dexter decides to laminate himself.

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

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

Dad wants to show Dexter the joy of sports.

Dexter newest creation gives Mom super powers.

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

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

When Dexter's favorite show gets interrupted by an emergency, he searches all town trying to find it and solve so regular broadcast returns.

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

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

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

Dexter combines himself with bubble gum to become more stretchable.

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

A confusion at the supermarket makes Dexter go home with a different, yet extremely scientific, family; but who is home with his real family?

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

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

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

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

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

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

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

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

Dee Dee's stuffed animals come to life and roam the house. Dee Dee and Dexter must get them before Mom and Dad find out.

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

Not interested in hearing Dee Dee's long-winded story, Dexter gives her a silencing formula to keep her quiet, but it instead turns her into a giant monster still bent on telling her story. When he realizes that nothing can make her quiet, he becomes a giant monster himself.

After Dexter eats a giant burrito he believes he's going to die, so he makes a list of everything he must do before that time comes. (Including, make Mom and Dad happy, do dishes, free Robots, make World Peace, end World's hunger, learn to dance, make Dee Dee happy, shut down the Main System... and tell Mom and Dad about the secret laboratory).

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

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

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

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

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

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

Dexter worked all night on his inventions so all he wants is some sleep, but Dee Dee will make sure that that doesn't happen.

Dexter goes to Mars to find alien life forms.

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

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

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

Following the destruction of his lab by Dexter and Dee Dee (in the episode Dexter's Rival), Mandark turns to magic to beat Dexter at the science fair.

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

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

Dexter ends up in the "old part of the lab" where his earliest inventions, long since forgotten, are not too happy to see him. They are mad at him for saying they were his greatest inventions, then moved on to another great invention.

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

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

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

Decxter and Mandark are both outperformed by a new girl attending the school, jealous, they become allies to deal with her.

Dexter creates an ink in which lets him command them to do whatever he wants them to do. Although when Mandark gets a hold of it, Dexter is the one being the slave.

Both Dexter and Mandark's fathers intercede during another of Dexter and Mandark's petty squabbles, but their effort to get along with one another backfire, and the two also soon engage in a heated fight.

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

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

Mom spends a day at the supermarket.

Dexter stays at school too much, forcing the janitor to stay as well, so he waits for a day in which Dexter has to leave early for an emergency, as he plans his revenge...

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

Dexter creates a belt that can have its wearer do everything backwards, only to get in trouble when Dee Dee manages to get control of the time directional switch.

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

Numerous factors like getting up early, being the first ones there, fishing clothes and other accesories, will not allow Dexter and his Dad to go on a fishing trip.

Mom and Dad recall the moments that got them together.

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

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

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

Mandark plans another scheme to get rid of Dexter.

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

Dexter and his dad enter a Golf tournament, with Dad eager to get his hands on the Trophy, but there is one problem: he is hopeless at Golf, so Dexter decides to help with a remote controlled Golf ball

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

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

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

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

A Monster starts roaming Dexter's lab, although Dexter doesnt know its just Dee Dee, who ate an apple in a failed lab experiment.

Dexter creates a new invention and wears it on his head. It suddenly becomes the latest fashion craze at Huber elementry.

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

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

Dexter prevents Dee Dee from destroying some ants. In order to teach her about ants, Dexter and Dee enter Dexter's ant farm. The ants think Dexter is a criminal and has him fight to the death with a stronger ant.

Tired of missing his favorite TV shows because of studying, Dexter creates a special helmet that absorbs all the TV info.

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

Dexter and his family are kidnapped by aliens, Dexter leads his family in an escape attempt, but when Dexter is captured once more, Mom, Dad, and Dee-Dee attempt to save him.

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

Dexter's lab is threatened with repossession unless he can repay his debt to NASA. When Dee Dee wins the same amount in a lottery, he decides to steal her money out of desperation.

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

Dexter is hit by a wrench while working on a device, and suffers amnesia, Dee Dee decides to mess with his head

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

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

Mom thinks she should spend quality time and watch Dexter in his chess comatition. Although, she really embarasses Dexter while hes there...

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

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

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

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

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. He soon becomes an unwilling character in Dee Dee's doll story, but he believes the story to be real.

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

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

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

Dexter uses his newest creation to turn Dee Dee into a boy, but the male version of Dee Dee (Doo Dee) is not as cool as Dexter it would.

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

With only one television in their apartment, Major Glory, Krunk, and Valhallen disagree on what to watch: Major Glory's televised capture of the Disgruntled Postman, TV Puppet Pals, or the monster truck pull.

Dexter and Dee Dee enter tryouts to become Major Glory's sidekick. When Dee Dee wins, Dexter realizes that fancy costumes are not the only criterion to become a superhero.

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

Dad goes with the kids to play some golf.

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

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

After a fright from Dee Dee, Dexter lays down in the beard growing machine and tries to grow a beard like his hero, Action Hank. Unfortunately, everyone thinks he's a hero.

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

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

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

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 in an attempt to win her heart.

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. His nonstop scratching eventually does just that.

Dexter decides its better if him and Mandark work together, although in the end Dexter does all the work while Mandark does nothing

This takes place in the future, where Old Man Dexter tells about his ""glory days"". And Old lady Dee Dee keeps on adding her opinions as well...

When Dee Dee accidentally chops off her pigtail, Dexter gives her some hair growth potion. Although when she uses it, her hair floods the entire house.

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

A girl accidentally takes Dexter's lunchbox, so Dexter and his friend must go into the girls bathroom to get it.

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

Monkey must defend the city from a giant underground lava monster, Magmanamus, who cannot sleep because of the noise created by its residents.

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

While on a date with Agent Honeydew, Monkey gets hypnotized by the music of the Organ Grindor who commands him to rob Fort Knox.

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 bring him out.

After an I.Q. test defines Dexter as ""average"", he decides to live an average life hanging out with an average boy of last name Smith.

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

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

Dad decides to give the car a retouch.

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

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

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

When his mother falls ill, Dexter creates a robot to do her chores. Dee Dee gets hold of its remote control and wreaks havoc, forcing Dexter to create a second robot to counter Dee Dee's.