Dexter creates a "Mom-Droid" robot to have it do all of his mother's duties when she falls ill. But a little carelessness makes the control of the "Mom-Droid" fall into the hands of his sister, DeeDee. Now, the "Mom-Droid" is causing all sorts of havoc around the house, so Dexter builds a "Super Mom-Droid" to combat the original one he made.
When Dexter falls victim to a terrifying creature brought forth by his latest invention, Dee Dee goes back in time to warn him. The events only end the episode with a permanent time loop.
Due to all the noise being made by all the citizens of the city on a daily basis, the monster Magmanamus is awakened. However, when he goes to the surface to try and get the people to be quiet, he ends up causing even more noise since the people are frightened of him. Now, Monkey prepares to fight him, unaware that Magmanamus only wants peace and quiet, so he can sleep.
When Dexter's new invention for the science fair proves to hard for him to handle on his own, he is forced to find a new assistant. When no suitable assistant can be found, he takes on DeeDee, but only after giving her some new brains.
Tired of never having a worthy opponent, intergalactic wrestling champion Rasslor arrives on Earth hoping to find someone who can actually prove to be a match for him. So, he challenges all of Earth's superheroes to wrestling matches aboard his ship, which they anxiously accept. However, Rasslor refuses to wrestle Monkey due to his size, even though Monkey is the most eager to wrestle him.
Dexter had tried to excuse himself out of P.E. (with a fake note), but the new coach does not buy it, so Dexter is forced to play dodgeball, fed up with losing, Dexter builds an exo suit to help him win, but is ironically hit with a dodgeball by Dee Dee. This episode is clearly inspired by the film Aliens, as the exo suit that Dexter wears is almost identical to the loader Ripley uses against the Queen.
The result of a space experiment, Simion, a super intelligent chimpanzee, plans to get revenge on humans for the way he is now. However, he teleports Monkey onto his ship in order to convince him to join him in his plan for revenge. After almost being convinced, Monkey attempts to show Simion that revenge isn't the answer.
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.
Mandark enrolls at Dexter's school, quickly overshadowing Dexter and forces Dexter to shut down his lab to add more power to his own lab. When Mandark falls in love with Dee Dee, Dexter sets up a date between the two (only because he knew Dee Dee would destroy Mandark's lab).
Monkey's birthday is interrupted by Barbequor, a villain who wants to roast Earth for his next meal.
On his way home, Dexter gets followed by a labrador, when he teaches him to speak, the dog becomes even more annoying.
Dexter and Dee Dee test his latest invention: a device that turns people into animals, which yields crazy results.
In order to rid himself of Dee Dee, Dexter clones himself. However, Dee Dee, and her friends, Mee Mee and Lee Lee do the same, causing havoc.
After working himself to hard, Dexter's brain snaps and he turns into, well, a dimwit. Dee Dee seizes the chance and has the now mind dead Dexter do some crazy things for the neighborhood to see.
Dexter creates a Tyrannosaurus Rex that has the brain and heart of a dog, and Dee Dee makes him her pet.
Orgon Grindor uses his hypnotic powers to make Monkey abandon his night with Agent Honeydew and steal the gold from Fort Knox.
When Dee Dee eats an experimental cookie of Dexter's design, she grows extremely tall and makes the city her dollhouse, leaving it up to Dexter to don his giant Robo-Dexo suit and bring her back.
To find his missing invention, Dexter heads into the one place he fears to go: Dee Dee's room, where cooties run rampant.
Monkey must fight for his life against a hunter on a jungle asteroid.
Dexter and Dee Dee enter the tryouts for Major Glory's sidekick.
A video game takes over Dexter's lab.
Mayor Glory, Valhallen and Krunk want to watch different shows on TV at the exact same hour.
Haunted by nightmares about Dee-Dee explaining to Einstein the purpose of meaning, Dexter decides to induce pleasant dreams into his mind scientifically. Using a barely awake Dee-Dee to operate his Dream Machine, Dexter embarks on a wondrous little adventure where he absorbs knowledge, learns all languages, and learns how to program a VCR. His dream goes well until Dee-Dee accidentally gives the machine a little nudge in the wrong direction.
Major Glory and Krunk must find Valhallen's guitar before he loses his powers.
Unable to win the heart of his babysitter, Dexter ages himself in the hopes of having better luck.
After Dexter shrinks himself to doll size, he becomes an unwilling character in Dee Dee's doll story. Due to a side effect of shrinking, he starts to confuse fantasy with reality, and starts to believe the story is real.
Krunk falls in love with a female version of him, She-Thing.
Dexter decides to study french with an old record, but when the record repeats constantly "Omellete du fromage", it becomes everything Dexter can say.
Mayor Glory has one week to teach Valhallen and Krunk some manners before his Uncle Sam arrives.
Dee Dee tries to get Dexter to loosen up. It works, but Dexter ends up trying to destroy his lab. Dee Dee realizes her mistake, that she tried to change who Dexter is.
Dee Dee, LeeLee and MeeMee are having a pajama party, which Dexter decides to explore to learn the behavior of other "species".
While searching the basement, the Justice Friends discover a new hero with the special ability of repairing.
Somehow Dexter got a debt of 200 million dollars with the NASA, so he must find a way to get the money.
To get rid of some aliens, Dexter offers Dee Dee as a test subject tricking her into thinking they're going to candy land. The guilt drives Dexter crazy and he goes to rescue her. The aliens willingly gives Dee Dee back (she wrecked their ship looking for candy).
Dexter and Mandark participate in a science fair competition, but Mandark finds himself completely without resources, desperate, he turns to the dark magics...
Major Glory goes crazy trying to get a bee out of the apartment.
Dee Dee tries on Dexter's inflatable suit, and is swept away on the wind. In getting her down, Dexter accidentally destroys the suit. Dee Dee fixes it by tying balloons to it.
Dexter accidentally turns Dee Dee into a monster, so he has to turn into one himself to stop her.
Major Glory tries to keep White Tiger out of his property with Krunk to help him.
Mandark doesn't know that his pet duck is really Quackor the Fowl, Monkey's rival. Quackor overhears Mandark talking in his sleep about destroying Dexter's lab and tries to do it, unaware that Monkey is Dexter's pet.
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.
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.
At the Chubby Cheese pizza restaurant, Dexter wears a Chubby Cheese hat and tries to slow down the Whack The Weasel machine to win a stuffed Monkey doll before Dee Dee does.
One of Dexter's robots becomes Dee Dee's servant when she removes a wrench that froze him up, but the robot is willing to destroy anyone who is mean to her or scolds her, including Dexter.
Dexter switches his brain with a mouse, and must avoid his mother when she decides to exterminate him. A Parody of Tom and Jerry.
When Dexter's friends tire of the complicated traps he sets up as Dungeon Master (he has their character's killed every time), they put Dee Dee in charge for a change of pace.
Dexter's father gets challenged to an arm wrestling match against a local champion at a truck stop, when he causes the champion to lose for the first time, but refuses to do so even when he trashes the family car. He finally accepts the challenge when he slams the door in Mom's face. Dee Dee knows he'll get creamed, so Dexter builds him a robotic arm to help him win the match.
Dexter uses radiation therapy so he can like vegetables, it actually causes him to only eat vegetables, also, the therapy has consequences if Dexter goes too long without them. He turns into a Parody of The Incredible Hulk without vegetables.
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.
Dexter oversleeps and still has to finish his homework along with getting ready for school and eating breakfast, so he creates a helmet that expands thirty seconds into thirty minutes, but realizes that slowing down time is more detrimental than helpful. When he gets everything done, the helmet shuts off. But Dee Dee blocks his door causing him to miss the bus. When Dexter asks Dee Dee why, she replies "Snow Day, school's canceled!". Dexter realizes he did all that rushing around for nothing!
Dee Dee Locks and the Ness Monster—Dexter's mother forces Dexter to read to Dee Dee when she's sick, but she makes up her own story after being bored by Dexter's story (which was actually a science article). The story is completely mixed up and makes no sense. Dexter ends up catching Dee Dee's illness.
Dexter fuses Dee Dee with the family car by accident, causing mayhem. A Parody of Herbie the Love Bug.
Dexter accidentally takes a library book without checking it out, so he and Dee Dee try to put it back without being caught.
Dexter calls upon the "shoe gnomes" to repair his boots, but can't rid himself of them afterwards. The only way to get rid of them, according to Dee Dee, is to kick them in the butt. Dexter gets rid of the last one with his boot, but it's damaged again.
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.
Dee Dee's new dance annoys Dexter to no end.
Dexter and Dee Dee label everything in the house. When their parents get home, they mistake Dexter for Dee Dee (he had a Dee Dee label on his forehead), but he already blamed Dee Dee for the chaos.
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 his dog. He believes Dee Dee has been infected with a dog virus. He is then mistaken for the first human virus to infect a dog by the vet.
Dee Dee and Dexter win a free pass to Professor Hawk's magic factory after finding the golden diskette.
When Dee Dee refuses to flush their gold fish down the toilet, the ghost of the fish haunts them.
Dad encourages Dexter to become the king of snow, as he was in his early days, until someone beat him.
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 that it will explode if Dexter doesn't find it on time.
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 Dexter must rescue her.
Dexter must go to the back of the school bus to retrieve his pencil, where another kid got lost years ago.
Krunk stays awake all night watching The Puppet Pals Show Marathon, so his brain starts playing him tricks.
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 find him first.
Dexter must stop Dee Dee from showing some pictures (that she took earlier in Dexter's lab) to Mom.
Dexter and two friends go to the Star Check Convention, but certain confusion might send them to a different one.
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 newest creation gives Mom super powers.
Dexter's robot takes over his lab.
Dexter and Dee Dee get their Action Hank and Pony Puff Secret Codes mixed up.
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 Ultimate Mayor Glory Action Figure.
Dexter and Dee Dee go to South America in order to find the chupacabras, an animal that Dexter created.
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 and Dee Dee go to the dumps to retrieve Dee Dee's lost teddy bear.
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 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 villain named Peltra wants Monkey's Coat.
Dee Dee, LeeLee and MeeMee become crime fighters, 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 show-and-tell product, he criticises it heavily and offers his own..contributions
Surprised of the results coffee causes on Mom and Dad, Dexter and Dee Dee decide to try it themselves.
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 reputation, he turns Dee Dee into Mom.
After Dexter gets bitten by a clown, he turns into one every night.
Dexter is afraid of taking a dive at the pool because Dad always pushes him.
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 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 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 with an average boy of last name Smith.
Dexter's untested formula causes all plants in the garden to become dangerous.
Dexter and Mandark mechanize the giant figures of Lincoln and Washington from the Mount Rushmore statues and wreak havoc with them.
Dexter creates a small bug that eats all the scrap metal caused by Dee Dee's destruction.
After Dexter returns a bunny to a little girl with big round eyes, she starts following Dexter everywhere.
After Dexter "fires" Dee Dee, he realizes that his lab needs chaos.
Dexter makes Dee Dee a robot for herself, at the same time a volcano is going to burst on an island in the middle of the ocean.
Dexter must save his family after they get possessed by aliens.
Dee Dee must save Dexter who is a slave in a distant galaxy.
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 builds a treehouse in the garden and Dexter can't stop wondering what's up there.
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.
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 and his friends Lucky and Pierre(¿?) are victims of a bully that hates kids with funny accents.
Numerous factors like getting up early, being the first ones there, fishing clothes and other accessories, will not allow Dexter and his Dad to go on a fishing trip.
Dexter meets a bum at an appliance store with a strange device on his head.
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.
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 has to leave early for an emergency, as he plans his revenge...
Dexter must stop his mechanical parrot before his imitations reveal the secret of his lab.
Dexter goes to the appliance store to buy a light bulb for his lab.
Dexter takes piano classes from a man that looks a lot like Paul Williams.
When an electrician comes to repair the house, Dexter discovers that if he repairs the lab it will function perfectly.
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.
Dee Dee keeps getting into Dexter's lab even though Dexter keeps throwing her out.
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.
Dexter and Computress team up in order to shrink Mandark's head.
Dexter must prove to Dee Dee that Santa Claus doesn't exist.
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.
The story of how Dexter was born and how he built his lab, in the style of a musical.
When Blue Falcon appears with a destroyed Dynomutt, Dexter decides to build a new one.
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.
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.
Mandark disguises as Mom in order to get into Dexter's Lab.
Dexter uses a device to listen to what Dad is thinking, but the experiment backfires and everyone else can hear what Dexter is thinking.
Quackor returns to battle Monkey in Dexter's Lab.
Because of his exceptional grades Dexter's school and parents have decided that he can go to college. At first Dexter is happy to be there so he can fill his mind with college knowledge, but in the end the students influence on Dexter allows him to do college pranks sending him a one way ticket back to Huber Elementary School.
Dexter creates a device that 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 until he discovers that his grandpa has a secret lab!
Dexter travels to the moon and finds aliens that are planning to come to Earth to take everything.
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.
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 absorbs all the TV info.
How did a young child called Susan became the being now known as Mandark? Born to free spirits, and with a passionate determination to harness the forces of science for his own ends, this is his story...
Two robots escape from Dexter's lab in order to have a better life.
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 bathroom to get it.
Mandark gets in Dexters computer raving havoc, so Dexter must stop him.
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.
Dad goes with the kids to play some golf.
Dexter creates the ultimate robot (RoboDexo 3000) to replace his previous 200 model.
Dexter creates a special device that lets him create his own life-like superhero comic... along with his sister villain "Deestructa".
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't interpret the right way.
The U.S. army invades Dexter's lab and Dexter fights them, each side thinking the other is a troop of aliens.
While Mom, Dexter and Dee Dee are out shopping, Dad decides to spend the afternoon dancing... like Tom Cruise in Risky Business.
Dexter must pass a physical bar exam if he wants to pass P.E.
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 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 when Dexter is captured once more, Mom, Dad, and Dee-Dee attempt to save him.
This second short, first aired as part the 56th episode, repeats in this one.
Dexter and Dad watch a late night horror movie, and spend a scary night in there house.
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.
Dee-Dee has a new boyfriend who also likes science and Einstein, and soon the boy finds himself caught in a vicious tug of war...
Dexter is hit by a wrench while working on a device, and suffers amnesia, Dee Dee decides to mess with his head
Dexter and Mandark drill underground to expand their labs, but end up overlapping each other's work. They secretly devise a plan to destroy each other.
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 enforces the rules really hard, driving everyone crazy.
A Monster starts roaming Dexter's lab, although Dexter doesn't know its just Dee Dee, who ate an apple in a failed lab experiment.
Dexte'rs father begins to sleepwalk, and accidently stumbles into Dexter's Lab
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...
Dexter accidentally shrinks his parents, and puts them into a model of there house. Although the house isn't completed, so Dexter must find a way to reverse it before they know the truth.
Dexter creates a new invention and wears it on his head. It suddenly becomes the latest fashion craze at Huber elementary.
Dexter and Dee Dee realize when they work together, they make a pretty good team.
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.
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.
Dee Dee has a song stuck in her head. Literally.
Dexter and Mandark are both outperformed by a new girl attending the school, jealous, they become allies to deal with her.
Mom thinks she should spend quality time and watch Dexter in his chess competition. Although, she really embarrasses Dexter while hes there...
Dad gets fired from his job, and has to do the same job Mom does. He realizes it isn't as easy as it looks.
When Dexter realizes 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 vision. Although, he learns than no human should be able to see THIS well...
Dexter goes on a quest. His quest is to reach the bathroom before he explodes.
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 work while Mandark does nothing
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 didn't work, he decides to make everyone shorter than him.
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.
Dexter finds out that all of Mandark's plans are taken from a comic book. This way, he can get ready.
When Dexter's Computer gets Laryngitis, Dexter must find a replacement voice for her.
Dexter refuses to see that blondes have more fun, so he dyes Dee Dee's hair to prove it.
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 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
Dexter's parents accidentally sell Dexter's latest invention, and it is bought by Mandark.
Monkey narrates a documentary of the future of Laboratories and sciences.
When Dexter gets chicken pox, Dee Dee warns him with a ridiculous story about some hens that pecked children at night leaving pimples on them that if scratched would turn into evil contaminated chickens.
Dexter falls in love with a new girl at his school, but decides to impress her with poetry rather than science.
When Dee Dee sees an ostrich at the zoo, she wants one of her own as a pet.
Dee Dee starts layin' down the Judo on Dexter, then Dexter learns how to fight back.
