Dexter's Laboratory: Season 1

1996 · 38 episodes · ★ 6.7

What Season 1 of Dexter's Laboratory

Dexter is a boy genius with red hair and glasses who lives with his parents in a residential neighborhood in California. His biggest secret is behind a bookshelf in his bedroom, which actually hides a door to a laboratory where he keeps his inventions and experiments. His parents suspect nothing. Trouble comes in the form of Dee Dee, his older sister, impulsive and carefree, who barges in without permission again and again and wrecks his creations. A constant domestic war breaks out between them, as Dexter tries to protect his secret space from a sister who never stops invading it.

38episodes

Apr 28, 1996premiered

Jan 1, 1997Latest episode

4.4 hrtotal runtime

Season 1 Episodes

1x01 DeeDeemensional
Apr 28, 1996 · 7 min
In "Deedeemensional", Dee Dee time-travels to save Dexter from a monster. In "Magmanamus", Monkey goes up against a lava being that dislikes human-caused noise. In "Maternal Combat", when his mother falls, Dexter creates a robot mom to substitute for her.
Directing: Genndy Tartakovsky, Rob Renzetti
1x02 Dial M for Monkey: Magmanamus
Apr 28, 1996 · 7 min
Monkey must defend the city from a giant underground lava monster, Magmanamus, who cannot sleep because of the noise created by its residents.
Directed by: Genndy Tartakovsky, Paul Rudish · Starring: Frank Welker, Brad Garrett, Tom Kenny
1x03 Maternal Combat
Apr 28, 1996 · 7 min
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.
Directing: Genndy Tartakovsky, Rob Renzetti
1x04 Dexter Dodgeball
May 5, 1996 · 7 min
Dexter is forced to play dodgeball by his P. E. teacher. Constantly failing, Dexter builds a robotic exoskeleton to defend himself.
Directing: Genndy Tartakovsky, Craig McCracken · Starring: Michael Pataki, Rob Paulsen
1x05 Dial M for Monkey: Rasslor
May 5, 1996 · 7 min
Intergalactic wrestling champion Rasslor challenges Earth's superheroes, including Monkey, with the planet's fate at stake.
Directing: Genndy Tartakovsky, Paul Rudish · Starring: Randy Poffo, Rob Paulsen, Tom Kenny, Frank Welker
1x06 Dexter's Assistant
May 5, 1996 · 7 min
In need of an assistant to operate his latest invention, Dexter performs a brain transplant on Dee Dee to make her smart enough to fulfill the role. With her new brain, Dee Dee proves to be more intelligent than Dexter.
Directing: Genndy Tartakovsky, Rob Renzetti
1x07 Dexter's Rival
May 12, 1996 · 7 min
Mandark Astronomanov, a new student at Dexter's school, seems to be superior to Dexter academically. Mandark forces Dexter to shut down his lab so that Mandark's lab can gain more power. However, with the help of Dee Dee, Dexter manages to destroy Mandark's lab.
Directed by: Genndy Tartakovsky · Starring: Eddie Deezen, Frank Welker
1x08 Dial M for Monkey: Simion
May 12, 1996 · 7 min
Monkey encounters Simion, an intelligent anthropomorphic chimpanzee who seeks vengeance on humans for turning him into his current state.
Directing: Genndy Tartakovsky, Paul Rudish · Starring: Frank Welker, Maurice LaMarche, Robert Ridgely, Paula Tiso
1x09 Old Man Dexter
May 12, 1996 · 7 min
Banned from watching a late-night movie due to his young age, Dexter uses his technology to artificially grow into adulthood, but Dee Dee tampers with his machine, causing Dexter to turn into an old man.
Directing: Genndy Tartakovsky, Craig McCracken
1x10 Double Trouble
May 19, 1996 · 7 min
Dee Dee and her friends, Lee Lee and Mee Mee, enter Dexter's lab and wreak havoc. Dexter clones himself to stop them, but the girls too make clones of themselves.
Directing: Genndy Tartakovsky, Rob Renzetti
1x11 Dial M for Monkey: Barbequor
May 19, 1996 · 7 min
Monkey's birthday party is interrupted by Barbequor an intergalactic villain who plans to eat the planets, and his sidekick, the Silver Spooner.
Directing: Genndy Tartakovsky, Paul Rudish · Starring: Frank Welker, Robert Ridgely, Rob Paulsen, Tom Kenny
1x12 Changes
May 19, 1996 · 7 min
Rerun of "Dexter's Laboratory", the first "What a Cartoon!" pilot.
Directing: Genndy Tartakovsky · Writing: Genndy Tartakovsky
1x13 Jurassic Pooch
May 26, 1996 · 7 min
To clone a dinosaur with an incomplete DNA sequence, Dexter uses his dog's genetic code to fill in the gaps.
Directing: Genndy Tartakovsky, Craig McCracken · Starring: Frank Welker
1x14 Dial M For Monkey: Orgon Grindor
May 26, 1996 · 7 min
While on a date with Agent Honeydew, Monkey gets hypnotized by the music of the Organ Grindor who commands him to rob Fort Knox.
Directed by: Genndy Tartakovsky, Paul Rudish · Starring: Robert Ridgely, Frank Welker, Jim Cummings
1x15 Dimwit Dexter
May 26, 1996 · 7 min
Due to overworking his brain, Dexter's mind shuts down, making him act idiotic.
Directing: Genndy Tartakovsky · Starring: John Kassir, Tom Kenny
1x16 Dee Dee's Room
Jun 2, 1996 · 7 min
After Dee Dee steals his critical invention, Dexter ventures into her room to find it.
Directing: Genndy Tartakovsky
1x17 Dial M For Monkey: Huntor
Jun 2, 1996 · 7 min
Monkey encounters an alien hunter named Huntor and must fight him to save Agent Honeydew and Commander Chief.
Directing: Genndy Tartakovsky, Paul Rudish · Starring: Frank Welker, Ed Gilbert, Robert Ridgely
1x18 The Big Sister
Jun 2, 1996 · 7 min
Rerun of the second "What a Cartoon!" pilot.
Directing: Genndy Tartakovsky · Writing: Genndy Tartakovsky · Starring: Frank Welker
1x19 Star Spangled Sidekicks
Nov 20, 1996 · 7 min
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.
Directing: Genndy Tartakovsky · Starring: Jorge Galvan, Rob Paulsen
1x20 The Justice Friends: TV Super Pals
Nov 20, 1996 · 7 min
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.
Directing: Genndy Tartakovsky, Craig McCracken · Starring: Tom Kenny, Rob Paulsen, Frank Welker
1x21 Game Over
Nov 20, 1996 · 7 min
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.
Directing: Genndy Tartakovsky, Craig McCracken
1x22 Babysitter Blues
Nov 27, 1996 · 7 min
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.
Directed by: Craig McCracken, Rob Renzetti
1x23 The Justice Friends: Valhallen's Room
Nov 27, 1996 · 7 min
Valhallen loses his magic ax and starts turning into a nerd, forcing Major Glory and Krunk to enter his room to find it.
Directing: Genndy Tartakovsky · Starring: Tom Kenny, Rob Paulsen, Frank Welker
1x24 Dream Machine
Nov 27, 1996 · 7 min
When Dexter's nightmares become frequent and problematic, he invents a machine that allows him to have nice dreams, as long as Dee Dee can operate it properly while she is awake.
Directing: Genndy Tartakovsky, Rob Renzetti
1x25 Dollhouse Drama
Dec 4, 1996 · 7 min
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.
Directing: Rob Renzetti
1x26 The Justice Friends: Krunk's Date
Dec 4, 1996 · 7 min
While fighting Comrade Red and his gang, Krunk falls in love with his equivalent in their gang, She-Thing.
Directing: Genndy Tartakovsky · Starring: Tom Kenny, Rob Paulsen, Frank Welker
1x27 The Big Cheese
Dec 4, 1996 · 7 min
Dexter's new device allows him to study for the next day's French test while sleeping. It malfunctions, causing a single phrase -omelette du fromage- to repeat throughout the night, causing Dexter to wake up the next morning speaking nothing else except "omelette du fromage".
Directing: Genndy Tartakovsky · Starring: Rob Paulsen
1x28 Way of the Dee Dee
Dec 11, 1996 · 7 min
Dee Dee teaches Dexter how to live life her way instead of being lonely and purely focused on science.
Directing: Genndy Tartakovsky, Paul Rudish
1x29 The Justice Friends: Say Uncle Sam
Dec 11, 1996 · 7 min
Major Glory forces Krunk and Valhallen to tidy up their apartment for his Uncle Sam, who is coming over for a visit.
Directing: Genndy Tartakovsky · Starring: Tom Kenny, Rob Paulsen, Frank Welker
1x30 Tribe Called Girl
Dec 11, 1996 · 7 min
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. He gets caught by the girls, who force him to take part in their activities.
Directing: Genndy Tartakovsky, Rob Renzetti · Starring: Frank Welker, Kimberly Brooks
1x31 Spacecase
Dec 18, 1996 · 7 min
To prevent himself from being taken away by aliens for experimentation, Dexter tricks Dee Dee into going instead, but he regrets his decision after realizing how much he cares for her.
Directing: Genndy Tartakovsky, Rob Renzetti · Starring: Maurice LaMarche
1x32 The Justice Friends: Ratman
Dec 18, 1996 · 7 min
To fix their apartment's plumbing, Krunk and Valhallen go to the basement, where they meet Ratman, a diminutive vigilante raised by rats (a parody of Batman).
Directing: Genndy Tartakovsky · Starring: Frank Welker, Tom Kenny, Rob Paulsen, Maurice LaMarche
1x33 Dexter's Debt
Dec 18, 1996 · 7 min
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.
Directing: Genndy Tartakovsky · Starring: Maurice LaMarche
1x34 The Justice Friends: Bee Where?
Dec 25, 1996 · 7 min
Major Glory, Krunk, and Valhallen try to rid their apartment of a bee.
Directing: Genndy Tartakovsky, Rob Renzetti · Starring: Tom Kenny, Rob Paulsen, Frank Welker
1x35 Mandarker
Dec 25, 1996 · 7 min
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.
Directing: Genndy Tartakovsky · Starring: Eddie Deezen, Frank Welker, Tom Kenny
1x36 Inflata Dee Dee
Jan 1, 1997 · 7 min
Dee Dee inflates Dexter's hydro-plasmatic suit and constantly floats in the air, prompting Dexter to bring her down.
Directing: Genndy Tartakovsky
1x37 The Justice Friends: Can't Nap
Jan 1, 1997 · 7 min
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.
Directed by: Genndy Tartakovsky · Starring: Rob Paulsen, Tom Kenny, Frank Welker
1x38 Monstory Season Finale
Jan 1, 1997 · 7 min
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.
Directing: Genndy Tartakovsky, Rob Renzetti · Starring: Tom Kenny