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The Best Episodes of Dexter's Laboratory Season 1

Every episode of Dexter's Laboratory Season 1 ranked from best to worst. Discover the Best Episodes of Dexter's Laboratory Season 1!

Binge this in 2h 55m•Peaking at 7.9/10

Dexter, a boy-genius with a secret laboratory, constantly battles his sister Dee Dee, who always gains access despite his best efforts to keep her out, as well as his arch-rival and neighbor, Mandark.

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Episode Rankings

  1. #1 Fan Favorite
    Dexter's Laboratory Season 1 Episode 1 - DeeDeemensional
    7.6/10(323 votes)

    #1 - DeeDeemensional

    S1:E1

    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.

    Directors:Genndy Tartakovsky, Rob Renzetti
    Writer:Unknown

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  2. Dexter's Laboratory Season 1 Episode 2 - Dial M for Monkey: Magmanamus
    7.7/10(283 votes)

    #2 - Dial M for Monkey: Magmanamus

    S1:E2

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

    Directors:Genndy Tartakovsky, Paul Rudish
    Writer:Unknown

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  3. Dexter's Laboratory Season 1 Episode 3 - Maternal Combat
    7.9/10(279 votes)

    #3 - Maternal Combat

    S1:E3

    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.

    Directors:Genndy Tartakovsky, Rob Renzetti
    Writer:Unknown

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  4. Dexter's Laboratory Season 1 Episode 4 - Dexter Dodgeball
    7.3/10(222 votes)

    #4 - Dexter Dodgeball

    S1:E4

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

    Directors:Genndy Tartakovsky, Craig McCracken
    Writer:Unknown

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  5. Dexter's Laboratory Season 1 Episode 5 - Dial M for Monkey: Rasslor
    6.9/10(214 votes)

    #5 - Dial M for Monkey: Rasslor

    S1:E5

    Intergalactic wrestling champion Rasslor challenges Earth's superheroes, including Monkey, with the planet's fate at stake.

    Directors:Genndy Tartakovsky, Paul Rudish
    Writer:Unknown

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  6. Dexter's Laboratory Season 1 Episode 6 - Dexter's Assistant
    7.4/10(220 votes)

    #6 - Dexter's Assistant

    S1:E6

    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.

    Directors:Genndy Tartakovsky, Rob Renzetti
    Writer:Unknown

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  7. Dexter's Laboratory Season 1 Episode 7 - Dexter's Rival
    7.6/10(238 votes)

    #7 - Dexter's Rival

    S1:E7

    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.

    Director:Genndy Tartakovsky
    Writer:Unknown

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  8. Dexter's Laboratory Season 1 Episode 8 - Dial M for Monkey: Simion
    7.3/10(212 votes)

    #8 - Dial M for Monkey: Simion

    S1:E8

    Monkey encounters Simion, an intelligent anthropomorphic chimpanzee who seeks vengeance on humans for turning him into his current state.

    Directors:Genndy Tartakovsky, Paul Rudish
    Writer:Unknown

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  9. Dexter's Laboratory Season 1 Episode 9 - Old Man Dexter
    7.9/10(265 votes)

    #9 - Old Man Dexter

    S1:E9

    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.

    Directors:Genndy Tartakovsky, Craig McCracken
    Writer:Unknown

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  10. Dexter's Laboratory Season 1 Episode 10 - Double Trouble
    7.4/10(207 votes)

    #10 - Double Trouble

    S1:E10

    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.

    Directors:Genndy Tartakovsky, Rob Renzetti
    Writer:Unknown

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  11. Dexter's Laboratory Season 1 Episode 11 - Dial M for Monkey: Barbequor
    7.3/10(196 votes)

    #11 - Dial M for Monkey: Barbequor

    S1:E11

    Monkey's birthday party is interrupted by Barbequor an intergalactic villain who plans to eat the planets, and his sidekick, the Silver Spooner.

    Directors:Genndy Tartakovsky, Paul Rudish
    Writer:Unknown

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  12. Dexter's Laboratory Season 1 Episode 12 - Changes
    7.5/10(206 votes)

    #12 - Changes

    S1:E12

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

    Director:Genndy Tartakovsky
    Writer:Genndy Tartakovsky

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  13. Dexter's Laboratory Season 1 Episode 13 - Jurassic Pooch
    7.2/10(197 votes)

    #13 - Jurassic Pooch

    S1:E13

    To clone a dinosaur with an incomplete DNA sequence, Dexter uses his dog's genetic code to fill in the gaps.

    Directors:Genndy Tartakovsky, Craig McCracken
    Writer:Unknown

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  14. Dexter's Laboratory Season 1 Episode 14 - Dial M For Monkey: Orgon Grindor
    7.0/10(1 votes)

    #14 - Dial M For Monkey: Orgon Grindor

    S1:E14

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

    Directors:Genndy Tartakovsky, Paul Rudish
    Writer:Unknown

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  15. Dexter's Laboratory Season 1 Episode 15 - Dimwit Dexter
    0.0/10(0 votes)

    #15 - Dimwit Dexter

    S1:E15

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

    Director:Genndy Tartakovsky
    Writer:Unknown

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  16. Dexter's Laboratory Season 1 Episode 16 - Dee Dee's Room
    7.0/10(1 votes)

    #16 - Dee Dee's Room

    S1:E16

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

    Director:Genndy Tartakovsky
    Writer:Unknown

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  17. Dexter's Laboratory Season 1 Episode 17 - Dial M For Monkey: Huntor
    7.0/10(1 votes)

    #17 - Dial M For Monkey: Huntor

    S1:E17

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

    Directors:Genndy Tartakovsky, Paul Rudish
    Writer:Unknown

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  18. Dexter's Laboratory Season 1 Episode 18 - The Big Sister
    0.0/10(0 votes)

    #18 - The Big Sister

    S1:E18

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

    Director:Genndy Tartakovsky
    Writer:Genndy Tartakovsky

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  19. Dexter's Laboratory Season 1 Episode 19 - Star Spangled Sidekicks
    7.0/10(1 votes)

    #19 - Star Spangled Sidekicks

    S1:E19

    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.

    Director:Genndy Tartakovsky
    Writer:Unknown

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  20. Dexter's Laboratory Season 1 Episode 20 - The Justice Friends: TV Super Pals
    7.0/10(1 votes)

    #20 - The Justice Friends: TV Super Pals

    S1:E20

    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.

    Directors:Genndy Tartakovsky, Craig McCracken
    Writer:Unknown

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  21. Dexter's Laboratory Season 1 Episode 21 - Game Over
    7.0/10(1 votes)

    #21 - Game Over

    S1:E21

    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.

    Directors:Genndy Tartakovsky, Craig McCracken
    Writer:Unknown

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  22. Dexter's Laboratory Season 1 Episode 22 - Babysitter Blues
    7.0/10(1 votes)

    #22 - Babysitter Blues

    S1:E22

    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.

    Directors:Craig McCracken, Rob Renzetti
    Writer:Unknown

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  23. Dexter's Laboratory Season 1 Episode 23 - The Justice Friends: Valhallen's Room
    7.0/10(1 votes)

    #23 - The Justice Friends: Valhallen's Room

    S1:E23

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

    Director:Genndy Tartakovsky
    Writer:Unknown

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  24. Dexter's Laboratory Season 1 Episode 24 - Dream Machine
    7.0/10(1 votes)

    #24 - Dream Machine

    S1:E24

    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.

    Directors:Genndy Tartakovsky, Rob Renzetti
    Writer:Unknown

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  25. Dexter's Laboratory Season 1 Episode 25 - Dollhouse Drama
    7.0/10(1 votes)

    #25 - Dollhouse Drama

    S1:E25

    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.

    Director:Rob Renzetti
    Writer:Unknown

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Season 1 Ratings Summary

"DeeDeemensional" is the best rated episode of "Dexter's Laboratory" season 1. It scored 7.6/10 based on 323 votes. Directed by Genndy Tartakovsky, Rob Renzetti and written by Unknown, it aired on 4/28/1996. This episode is rated 0.1 points higher than the second-best, "Dial M for Monkey: Magmanamus".