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

The Muffin King

#1 - The Muffin King

Season 2 - Episode 50 - Aired Nov 12, 1997

Dexter and Dee Dee must stop Dad from eating Mom's muffins.

star 9.86
36 votes
Trapped With a Vengeance

#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...

star 9.82
39 votes
Dexter and Computress Get Mandark!

#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.

star 9.81
36 votes
Directors: John McIntyre
Writers: John McIntyre, Tyler Samuel Lee
Dee Dee and the Man

#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.

star 9.72
36 votes
Dee Dee Be Deep

#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.

star 9.67
6 votes
The Old Switcharooms

#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.

star 9.63
8 votes
Now That's a Stretch

#7 - Now That's a Stretch

Season 2 - Episode 52 - Aired Nov 19, 1997

Dexter combines himself with bubble gum to become more stretchable.

star 9.57
7 votes
Sun, Surf and Science

#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.

star 9.50
8 votes
Decode of Honor

#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.

star 9.44
9 votes
Writers: Craig McCracken
G.I.R.L. Squad

#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.

star 9.43
7 votes
Directors: Rumen Petkov
Writers: Andy Bialk
Catch of the Day

#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.

star 9.43
7 votes
Directors: Rumen Petkov
Writers: Bob Staake
World's Greatest Mom

#12 - World's Greatest Mom

Season 2 - Episode 41 - Aired Oct 22, 1997

Dexter newest creation gives Mom super powers.

star 9.43
7 votes
Game For a Game

#13 - Game For a Game

Season 2 - Episode 99 - Aired Apr 15, 1998

Dexter and Dee Dee compete in various games chosen by Dexter.

star 9.40
5 votes
Ultrajerk 2000

#14 - Ultrajerk 2000

Season 2 - Episode 42 - Aired Oct 22, 1997

Dexter's robot takes over his lab.

star 9.38
8 votes
Just an Old Fashioned Lab Song...

#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.

star 9.38
8 votes
Directors: John McIntyre
Writers: David Smith
Repairanoid

#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.

star 9.38
8 votes
A Dee Dee Cartoon

#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".

star 9.33
6 votes
LABretto

#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.

star 9.30
10 votes
Writers: David Smith
Dial M For Monkey: Peltra

#19 - Dial M For Monkey: Peltra

Season 2 - Episode 55 - Aired Nov 26, 1997

A new female villain named Peltra wants Monkey's Coat.

star 9.25
4 votes
911

#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.

star 9.17
6 votes
Down in the Dumps

#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.

star 9.17
6 votes
Unfortunate Cookie

#22 - Unfortunate Cookie

Season 2 - Episode 49 - Aired Nov 12, 1997

Dexter and Dee Dee get trapped with a Finger trap.

star 9.17
6 votes
Project Dee Dee

#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

star 9.17
6 votes
My Favorite Martian

#24 - My Favorite Martian

Season 2 - Episode 78 - Aired Feb 25, 1998

Dexter goes to Mars to find alien life forms.

star 9.17
6 votes
Voice Over

#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.

star 9.17
6 votes