The BEST Episodes of Dexter's Laboratory
Every episode ever - ranked by fan votes!
Last Updated: Apr 13, 2021
Network: Cartoon Network
Dexter's Laboratory is the story of a young boy prodigy. Born with an extraordinary mind, Dexter has built his very own extremely high tech and expansive laboratory in his room that NASA could only dream of. But Dexter has to keep his lab a secret for fear others will exploit it. Through out the years, Dexter has had to hide his lab from his parents and others but it is no easy task. All Dexter wants is to spend all the time he can inventing new things in his lab, but between his stupid and annoying older sister Dee Dee constantly barging into his lab and tearing up the place and his arch enemy and rival genius Mandark constantly tiring to take over his lab, Dexter's life is anything but easy. Dexter's Laboratory was originally premiered on Cartoon Network as part of the inaugural, Space Ghost hosted, "World Premiere Toons" before becoming a feature with two full shorts on the regular series, a.k.a. the What a Cartoon Show, it eventually became a series itself. Character
#1 - The Muffin King
Season 2 - Episode 50 - Aired Nov 12, 1997
Dexter and Dee Dee must stop Dad from eating Mom's muffins.
9.86 #2 - Trapped With a Vengeance
Season 2 - Episode 101 - Aired Apr 22, 1998
Dexter stays at school too much, forcing the janitor to stay as well, so he waits for a day in which Dexter has to leave early for an emergency, as he plans his revenge...
9.82 #3 - Dexter and Computress Get Mandark!
Season 2 - Episode 103 - Aired Apr 29, 1998
Dexter and Computress team up in order to shrink Mandark's head.
9.81 #4 - Dee Dee and the Man
Season 2 - Episode 75 - Aired Feb 18, 1998
After Dexter "fires" Dee Dee, he realizes that his lab needs chaos.
9.72 #5 - Dee Dee Be Deep
Season 2 - Episode 46 - Aired Nov 5, 1997
Dee Dee, who's not exactly good at singing, gets Dexter's help on getting a better voice, but not the voice Dexter was expecting.
9.67 #6 - The Old Switcharooms
Season 2 - Episode 80 - Aired Mar 4, 1998
After Dexter and Dee Dee destroy Dad's bowling trophy, they are sent to each other's room.
9.63 
#7 - Now That's a Stretch
Season 2 - Episode 52 - Aired Nov 19, 1997
Dexter combines himself with bubble gum to become more stretchable.
9.57 #8 - Sun, Surf and Science
Season 2 - Episode 93 - Aired Apr 1, 1998
Mandark tries to impress Dee Dee by getting into a surfing contest.
9.50 #9 - Decode of Honor
Season 2 - Episode 40 - Aired Oct 22, 1997
Dexter and Dee Dee get their Action Hank and Pony Puff Secret Codes mixed up.
9.44 #10 - G.I.R.L. Squad
Season 2 - Episode 56 - Aired Nov 26, 1997
Dee Dee, LeeLee and MeeMee become crime fighters, but of course they will not actually fight crime.
9.43 #11 - Catch of the Day
Season 2 - Episode 84 - Aired Mar 11, 1998
Numerous factors like getting up early, being the first ones there, fishing clothes and other accessories, will not allow Dexter and his Dad to go on a fishing trip.
9.43 #12 - World's Greatest Mom
Season 2 - Episode 41 - Aired Oct 22, 1997
Dexter newest creation gives Mom super powers.
9.43 #13 - Game For a Game
Season 2 - Episode 99 - Aired Apr 15, 1998
Dexter and Dee Dee compete in various games chosen by Dexter.
9.40 #14 - Ultrajerk 2000
Season 2 - Episode 42 - Aired Oct 22, 1997
Dexter's robot takes over his lab.
9.38 #15 - Just an Old Fashioned Lab Song...
Season 2 - Episode 89 - Aired Mar 25, 1998
Dexter takes piano classes from a man that looks a lot like Paul Williams.
9.38 #16 - Repairanoid
Season 2 - Episode 90 - Aired Mar 25, 1998
When an electrician comes to repair the house, Dexter discovers that if he repairs the lab it will function perfectly.
9.38 #17 - A Dee Dee Cartoon
Season 3 - Episode 19 - Aired Jun 7, 2002
After being kicked out of Dexter's Lab (AGAIN) She goes and plays in her "lab".
9.33 #18 - LABretto
Season 2 - Episode 107 - Aired May 6, 1998
The story of how Dexter was born and how he built his lab, in the style of a musical.
9.30 #19 - Dial M For Monkey: Peltra
Season 2 - Episode 55 - Aired Nov 26, 1997
A new female villain named Peltra wants Monkey's Coat.
9.25 #20 - 911
Season 2 - Episode 47 - Aired Nov 5, 1997
When Dexter's favorite show gets interrupted by an emergency, he searches all town trying to find it and solve so regular broadcast returns.
9.17 #21 - Down in the Dumps
Season 2 - Episode 48 - Aired Nov 5, 1997
Dexter and Dee Dee go to the dumps to retrieve Dee Dee's lost teddy bear.
9.17 #22 - Unfortunate Cookie
Season 2 - Episode 49 - Aired Nov 12, 1997
Dexter and Dee Dee get trapped with a Finger trap.
9.17 #23 - Project Dee Dee
Season 2 - Episode 59 - Aired Dec 3, 1997
Dee-Dee refuses any kind of help from Dexter on her science project, when Dee-Dee shows Dexter her show-and-tell product, he criticises it heavily and offers his own..contributions
9.17 #24 - My Favorite Martian
Season 2 - Episode 78 - Aired Feb 25, 1998
Dexter goes to Mars to find alien life forms.
9.17 #25 - Voice Over
Season 4 - Episode 28 - Aired Sep 19, 2003
When Dexter's Computer gets Laryngitis, Dexter must find a replacement voice for her.
9.17