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The Best Episodes of Dexter's Laboratory

Every episode of Dexter's Laboratory ranked from best to worst. Let's dive into the Best Episodes of Dexter's Laboratory!

Binge this in 1d 3h•Peaking at 8.2/10

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
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    Dexter's Laboratory Season 2 Episode 39 - Ice Cream Scream
    8.2/10(233 votes)

    S2:E39

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

    Director:Robert Alvarez
    Writer:Unknown

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  2. Dexter's Laboratory Season 2 Episode 40 - Decode of Honor
    8.1/10(24 votes)

    S2:E40

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

    Directors:Genndy Tartakovsky, Robert Alvarez
    Writer:Unknown

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  3. Dexter's Laboratory Season 1 Episode 3 - Maternal Combat
    7.9/10(302 votes)

    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 9 - Old Man Dexter
    7.9/10(284 votes)

    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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  5. Dexter's Laboratory Season 2 Episode 18 - Labels
    7.9/10(201 votes)

    S2:E18

    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.

    Director:Rob Renzetti
    Writer:Unknown

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  6. Dexter's Laboratory Season 2 Episode 1 - Beard to be Feared
    7.8/10(215 votes)

    S2:E1

    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.

    Director:Genndy Tartakovsky
    Writer:Unknown

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    The 20 WORST Episodes of Dexter's Laboratory

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  7. Dexter's Laboratory Season 2 Episode 9 - Hunger Strikes
    7.8/10(208 votes)

    S2:E9

    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.

    Director:Rob Renzetti
    Writer:Unknown

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  8. Dexter's Laboratory Season 1 Episode 2 - Dial M for Monkey: Magmanamus
    7.7/10(307 votes)

    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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  9. Dexter's Laboratory Season 1 Episode 1 - DeeDeemensional
    7.6/10(356 votes)

    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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  10. Dexter's Laboratory Season 1 Episode 7 - Dexter's Rival
    7.6/10(259 votes)

    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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  11. Dexter's Laboratory Season 2 Episode 38 - Dexter is Dirty
    7.6/10(184 votes)

    S2:E38

    To avoid the bath, Dexter decides to laminate himself.

    Director:Genndy Tartakovsky
    Writer:Unknown

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  12. Dexter's Laboratory Season 1 Episode 12 - Changes
    7.5/10(222 votes)

    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 2 Episode 3 - Ant Pants
    7.5/10(193 votes)

    S2:E3

    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.

    Director:Genndy Tartakovsky
    Writer:Unknown

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  14. Dexter's Laboratory Season 2 Episode 8 - Hamhocks and Armlocks
    7.5/10(194 votes)

    S2:E8

    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.

    Directors:Genndy Tartakovsky, Rob Renzetti
    Writer:Unknown

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  15. Dexter's Laboratory Season 2 Episode 32 - The Bus Boy
    7.5/10(170 votes)

    S2:E32

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

    Directors:Genndy Tartakovsky, Rob Renzetti
    Writer:Unknown

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  16. Dexter's Laboratory Season 2 Episode 36 - Photo Finish
    7.5/10(176 votes)

    S2:E36

    Dee Dee photographs Dexter's secret lab.

    Directors:Genndy Tartakovsky, Robert Alvarez
    Writer:Unknown

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  17. Dexter's Laboratory Season 1 Episode 6 - Dexter's Assistant
    7.4/10(235 votes)

    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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  18. Dexter's Laboratory Season 1 Episode 10 - Double Trouble
    7.4/10(225 votes)

    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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  19. Dexter's Laboratory Season 2 Episode 12 - Dee Dee Locks and the Ness Monster
    7.4/10(178 votes)

    S2:E12

    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.

    Directors:Genndy Tartakovsky, Robert Alvarez
    Writer:Unknown

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  20. Dexter's Laboratory Season 2 Episode 14 - Book 'Em
    7.4/10(179 votes)

    S2:E14

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

    Director:Robert Alvarez
    Writer:Unknown

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  21. Dexter's Laboratory Season 1 Episode 4 - Dexter Dodgeball
    7.3/10(242 votes)

    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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  22. Dexter's Laboratory Season 1 Episode 8 - Dial M for Monkey: Simion
    7.3/10(230 votes)

    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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  23. Dexter's Laboratory Season 1 Episode 11 - Dial M for Monkey: Barbequor
    7.3/10(211 votes)

    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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  24. Dexter's Laboratory Season 2 Episode 4 - Mom and Jerry
    7.3/10(183 votes)

    S2:E4

    Dexter switches his brain with a mouse, and must avoid his mother when she decides to exterminate him. A Parody of Tom and Jerry.

    Director:Robert Alvarez
    Writer:Unknown

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  25. Dexter's Laboratory Season 2 Episode 7 - D & DD
    7.3/10(169 votes)

    S2:E7

    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.

    Director:Genndy Tartakovsky
    Writer:Unknown

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Best Episodes Summary

"Ice Cream Scream" is the best rated episode of "Dexter's Laboratory". It scored 8.2/10 based on 233 votes. Directed by Robert Alvarez and written by Unknown, it aired on 10/15/1997. This episode scored 0.1 points higher than the second highest rated, "Decode of Honor".