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The Worst Episodes of Dexter's Laboratory

Every episode of Dexter's Laboratory ranked from worst to best. Explore the Worst Episodes of Dexter's Laboratory!

The Worst Episodes of Dexter's Laboratory

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,...

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  1. NaN/10(0 votes)

    #1 - 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.

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    Writer:N/A
  2. NaN/10(0 votes)

    #2 - Changes

    S1:E12

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

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  3. NaN/10(0 votes)

    #3 - Dimwit Dexter

    S1:E15

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

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    Writer:N/A
  4. NaN/10(0 votes)

    #4 - The Big Sister

    S1:E18

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

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  5. 5.9/10(131 votes)

    #5 - Sole Brother

    S3:E3

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

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    Writer:N/A
  6. 5.9/10(125 votes)

    #6 - Overlabbing

    S4:E3

    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.

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  8. 6.0/10(152 votes)

    #7 - A Mom Cartoon

    S3:E11

    Mom spends a day at the supermarket.

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    Director:Chris Savino
    Writer:N/A
  9. 6.0/10(132 votes)

    #8 - The Mock Side of the Moon

    S3:E12

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

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    Writer:N/A
  10. 6.0/10(124 votes)

    #9 - Dad Man Walking

    S4:E9

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

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  11. 6.1/10(121 votes)

    #10 - The Grand Daddy of All Inventions

    S3:E9

    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!

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    Writer:N/A
  12. 6.1/10(123 votes)

    #11 - The Scrying Game

    S4:E7

    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...

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    Director:Chris Savino
    Writer:Mike Stern
  13. 6.2/10(137 votes)

    #12 - Streaky Clean

    S3:E1

    Dexter creates a device to keep his clothes clean.

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    Writer:N/A
  14. 6.2/10(125 votes)

    #13 - A Quackor Cartoon

    S3:E5

    Quackor returns to battle Monkey in Dexter's Lab.

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    Director:Chris Savino
    Writer:N/A
  15. 6.2/10(130 votes)

    #14 - If Memory Serves

    S3:E13

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

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    Writer:N/A
  16. 6.2/10(122 votes)

    #15 - Sis-Tem Error

    S4:E4

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

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  17. 6.2/10(127 votes)

    #16 - Monstrosi-Dee Dee

    S4:E8

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

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  18. 6.2/10(120 votes)

    #17 -

    S4:E12

    Dexter and Dee Dee realise when they work together, they make a pretty good team.

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  19. 6.3/10(161 votes)

    #18 - A Dad Cartoon

    S3:E2

    Dad decides to give the car a retouch.

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    Writer:N/A
  20. 6.3/10(126 votes)

    #19 - Copping an Attitude

    S3:E7

    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.

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    Writer:N/A
  21. 6.3/10(120 votes)

    #20 - A Failed Lab Experiment

    S3:E8

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

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    Director:Chris Savino
    Writer:N/A
  22. 6.3/10(120 votes)

    #21 - Faux Chapeau

    S4:E11

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

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  23. 6.4/10(122 votes)

    #22 - Mind Over Chatter

    S3:E4

    Dexter uses a device to listen to what Dad is thinking, but the experiment backfires and everyone else can hear what Dexter is thinking.

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    Writer:N/A
  24. 6.4/10(121 votes)

    #23 - Poppa Wheely

    S3:E10

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

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    Writer:N/A
  25. 6.4/10(124 votes)

    #24 - Remember Me?

    S4:E2

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

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  26. 6.4/10(120 votes)

    #25 - Dexter's Library

    S4:E6

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

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Worst Episodes Summary

"Old Man Dexter" is the worst rated episode of "Dexter's Laboratory". It scored N/A/10 based on 0 votes. Directed by Genndy Tartakovsky, Craig McCracken and written by N/A, it aired on 5/12/1996. This episode scored NaN points lower than the second lowest rated, "Changes".