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The Best Episodes of Dexter's Laboratory Season 3

Every episode of Dexter's Laboratory Season 3 ranked from best to worst. Discover the Best Episodes of Dexter's Laboratory Season 3!

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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 3 Episode 1 - Streaky Clean
    6.1/10(143 votes)

    #1 - Streaky Clean

    S3:E1

    Dexter creates a device to keep his clothes clean.

    Directors:Robert Alvarez, Chris Savino
    Writer:Unknown

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  2. Dexter's Laboratory Season 3 Episode 2 - A Dad Cartoon
    6.2/10(167 votes)

    #2 - A Dad Cartoon

    S3:E2

    Dad decides to give the car a retouch.

    Directors:John McIntyre, Chris Savino
    Writer:Unknown

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  3. Dexter's Laboratory Season 3 Episode 3 - Sole Brother
    5.9/10(137 votes)

    #3 - Sole Brother

    S3:E3

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

    Directors:John McIntyre, Chris Savino
    Writer:Unknown

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  4. Dexter's Laboratory Season 3 Episode 4 - Mind Over Chatter
    6.3/10(129 votes)

    #4 - 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.

    Directors:Robert Alvarez, Chris Savino
    Writer:Unknown

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  5. Dexter's Laboratory Season 3 Episode 5 - A Quackor Cartoon
    6.0/10(133 votes)

    #5 - A Quackor Cartoon

    S3:E5

    Quackor returns to battle Monkey in Dexter's Lab.

    Director:Chris Savino
    Writer:Unknown

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  6. Dexter's Laboratory Season 3 Episode 6 - Momdark
    6.5/10(142 votes)

    #6 - Momdark

    S3:E6

    Mandark disguises as Mom in order to get into Dexter's Lab.

    Directors:John McIntyre, Chris Savino
    Writer:Unknown

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  7. Dexter's Laboratory Season 3 Episode 7 - Copping an Attitude
    6.2/10(134 votes)

    #7 - 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.

    Directors:John McIntyre, Chris Savino
    Writer:Unknown

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  8. Dexter's Laboratory Season 3 Episode 8 - A Failed Lab Experiment
    6.2/10(128 votes)

    #8 - A Failed Lab Experiment

    S3:E8

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

    Director:Chris Savino
    Writer:Unknown

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  9. Dexter's Laboratory Season 3 Episode 9 - The Grand Daddy of All Inventions
    6.0/10(128 votes)

    #9 - 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!

    Directors:John McIntyre, Chris Savino
    Writer:Unknown

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  10. Dexter's Laboratory Season 3 Episode 10 - Poppa Wheely
    6.3/10(128 votes)

    #10 - 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.

    Directors:John McIntyre, Chris Savino
    Writer:Unknown

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  11. Dexter's Laboratory Season 3 Episode 11 - A Mom Cartoon
    5.9/10(160 votes)

    #11 - A Mom Cartoon

    S3:E11

    Mom spends a day at the supermarket.

    Director:Chris Savino
    Writer:Unknown

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  12. Dexter's Laboratory Season 3 Episode 12 - The Mock Side of the Moon
    6.0/10(140 votes)

    #12 - 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.

    Directors:John McIntyre, Chris Savino
    Writer:Unknown

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  13. Dexter's Laboratory Season 3 Episode 13 - If Memory Serves
    6.2/10(137 votes)

    #13 - If Memory Serves

    S3:E13

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

    Directors:Robert Alvarez, Chris Savino
    Writer:Unknown

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  14. Dexter's Laboratory Season 3 Episode 14 - A Mandark Cartoon
    7.0/10(1 votes)

    #14 - A Mandark Cartoon

    S3:E14

    Mandark plans another scheme to get rid of Dexter.

    Director:Chris Savino
    Writer:Unknown

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  15. Dexter's Laboratory Season 3 Episode 15 - Tele Trauma
    7.0/10(1 votes)

    #15 - Tele Trauma

    S3:E15

    Tired of missing his favorite TV shows because of studying, Dexter creates a special helmet that absorbs all the TV info.

    Directors:John McIntyre, Chris Savino
    Writer:Unknown

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  16. Dexter's Laboratory Season 3 Episode 16 - A Boy Named Sue
    7.0/10(1 votes)

    #16 - A Boy Named Sue

    S3:E16

    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...

    Directors:John McIntyre, Chris Savino
    Writer:Unknown

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  17. Dexter's Laboratory Season 3 Episode 17 - Lab on the Run
    7.0/10(1 votes)

    #17 - Lab on the Run

    S3:E17

    Two robots escape from Dexter's lab in order to have a better life.

    Directors:John McIntyre, Chris Savino
    Writer:Unknown

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  18. Dexter's Laboratory Season 3 Episode 18 - Dos Boot
    7.0/10(1 votes)

    #18 - Dos Boot

    S3:E18

    Mandark gets in Dexters computer raving havok, so Dexter must stop him.

    Director:Chris Savino
    Writer:Unknown

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  19. Dexter's Laboratory Season 3 Episode 19 - A Dee Dee Cartoon
    7.0/10(1 votes)

    #19 - A Dee Dee Cartoon

    S3:E19

    After being kicked out of Dexter's Lab (AGAIN) She goes and plays in her ""lab"".

    Directors:Robert Alvarez, Chris Savino
    Writer:Unknown

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  20. Dexter's Laboratory Season 3 Episode 20 - Would You Like That In The Can
    7.0/10(1 votes)

    #20 - Would You Like That In The Can

    S3:E20

    A girl accidentally takes Dexter's lunchbox, so Dexter and his friend must go into the girls bathroom to get it.

    Directors:John McIntyre, Chris Savino
    Writer:Unknown

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  21. Dexter's Laboratory Season 3 Episode 21 - That Magic Moment
    7.0/10(1 votes)

    #21 - That Magic Moment

    S3:E21

    Dexter's Magic Uncle Ferger 'O Reiley pays a visit.

    Directors:John McIntyre, Chris Savino
    Writer:Unknown

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  22. Dexter's Laboratory Season 3 Episode 22 - A Silent Cartoon
    7.0/10(1 votes)

    #22 - A Silent Cartoon

    S3:E22

    Dexter is trying to build his lab blue, but Dee Dee keeps making it pink.

    Director:Chris Savino
    Writer:Unknown

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  23. Dexter's Laboratory Season 3 Episode 23 - Opposites Attract
    7.0/10(1 votes)

    #23 - Opposites Attract

    S3:E23

    Dexter creates a magnetic field to keep Dee Dee away from him.

    Director:Chris Savino
    Writer:Unknown

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  24. Dexter's Laboratory Season 3 Episode 24 - Comic Relief
    7.0/10(1 votes)

    #24 - Comic Relief

    S3:E24

    Dexter creates a special device that lets him create his own life-like superhero comic... along with his sister villian ""Deestructa"".

    Director:Chris Savino
    Writer:Unknown

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  25. Dexter's Laboratory Season 3 Episode 25 - A Third Dad Cartoon
    7.0/10(1 votes)

    #25 - A Third Dad Cartoon

    S3:E25

    Dad goes with the kids to play some golf.

    Director:Chris Savino
    Writer:Unknown

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Season 3 Ratings Summary

"Streaky Clean" is the best rated episode of "Dexter's Laboratory" season 3. It scored 6.1/10 based on 143 votes. Directed by Robert Alvarez, Chris Savino and written by Unknown, it aired on 11/16/2001. This episode is rated 0.1 points higher than the second-best, "A Dad Cartoon".