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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The peak run. Top 40% of seasons by average rating — consecutive, with an average of 7.00.
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Candi Milo
Dexter (voice)
Kat Cressida
Dee Dee (voice)
Jeff Bennett
Dad (voice)
Kath Soucie
Mom (voice)
All 216 episodes plotted by IMDb rating
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38 episodes • 1996Avg: 7.0Golden Era
| # | Episode | Air Date | Rating |
|---|---|---|---|
| 1 | DeeDeemensional | Apr 28, 1996 | 7.0 |
| 2 | Dial M for Monkey: Magmanamus | Apr 28, 1996 | 7.0 |
| 3 | Maternal Combat | Apr 28, 1996 | 7.0 |
| 4 | Dexter Dodgeball | May 5, 1996 | 7.0 |
| 5 | Dial M for Monkey: Rasslor | May 5, 1996 | 7.0 |
| 6 | Dexter's Assistant | May 5, 1996 | 7.0 |
| 7 | Dexter's Rival | May 12, 1996 | 7.0 |
| 8 | Dial M for Monkey: Simion | May 12, 1996 | 7.0 |
| 9 | Old Man Dexter | May 12, 1996 | 0.0 |
| 10 | Double Trouble | May 19, 1996 | 7.0 |
| 11 | Dial M for Monkey: Barbequor | May 19, 1996 | 7.0 |
| 12 | Changes | May 19, 1996 | 0.0 |
| 13 | Jurassic Pooch | May 26, 1996 | 7.0 |
| 14 | Dial M For Monkey: Orgon Grindor | May 26, 1996 | 7.0 |
| 15 | Dimwit Dexter | May 26, 1996 | 0.0 |
| 16 | Dee Dee's Room | Jun 2, 1996 | 7.0 |
| 17 | Dial M For Monkey: Huntor | Jun 2, 1996 | 7.0 |
| 18 | The Big Sister | Jun 2, 1996 | 0.0 |
| 19 | Star Spangled Sidekicks | Nov 20, 1996 | 7.0 |
| 20 | The Justice Friends: TV Super Pals | Nov 20, 1996 | 7.0 |
| 21 | Game Over | Nov 20, 1996 | 7.0 |
| 22 | Babysitter Blues | Nov 27, 1996 | 7.0 |
| 23 | The Justice Friends: Valhallen's Room | Nov 27, 1996 | 7.0 |
| 24 | Dream Machine | Nov 27, 1996 | 7.0 |
| 25 | Dollhouse Drama | Dec 4, 1996 | 7.0 |
| 26 | The Justice Friends: Krunk's Date | Dec 4, 1996 | 7.0 |
| 27 | The Big Cheese | Dec 4, 1996 | 7.0 |
| 28 | Way of the Dee Dee | Dec 11, 1996 | 7.0 |
| 29 | The Justice Friends: Say Uncle Sam | Dec 11, 1996 | 7.0 |
| 30 | Tribe Called Girl | Dec 11, 1996 | 7.0 |
| 31 | Spacecase | Dec 18, 1996 | 7.0 |
| 32 | The Justice Friends: Ratman | Dec 18, 1996 | 7.0 |
| 33 | Dexter's Debt | Dec 18, 1996 | 7.0 |
| 34 | The Justice Friends: Bee Where? | Dec 25, 1996 | 7.0 |
| 35 | Mandarker | Dec 25, 1996 | 7.0 |
| 36 | Inflata Dee Dee | Jan 1, 1997 | 7.0 |
| 37 | The Justice Friends: Can't Nap | Jan 1, 1997 | 7.0 |
| 38 | Monstory | Jan 1, 1997 | 7.0 |
108 episodes • 1997Avg: 7.0Golden Era
| # | Episode | Air Date | Rating |
|---|---|---|---|
| 1 | Beard to be Feared | Jul 16, 1997 | 7.0 |
| 2 | Quackor the Fowl | Jul 16, 1997 | 7.0 |
| 3 | Ant Pants | Jul 16, 1997 | 7.0 |
| 4 | Mom and Jerry | Jul 23, 1997 | 7.0 |
| 5 | Chubby Cheese | Jul 23, 1997 | 7.0 |
| 6 | That Crazy Robot | Jul 23, 1997 | 7.0 |
| 7 | D & DD | Jul 30, 1997 | 7.0 |
| 8 | Hamhocks and Armlocks | Jul 30, 1997 | 7.0 |
| 9 | Hunger Strikes | Aug 6, 1997 | 7.0 |
| 10 | The Koos is Loose | Aug 6, 1997 | 7.0 |
| 11 | Morning Stretch | Aug 6, 1997 | 7.0 |
| 12 | Dee Dee Locks and the Ness Monster | Aug 13, 1997 | 7.0 |
| 13 | Backfire | Aug 13, 1997 | 7.0 |
| 14 | Book 'Em | Aug 13, 1997 | 7.0 |
| 15 | Sister's Got a Brand New Bag | Aug 20, 1997 | 7.0 |
| 16 | Shoo, Shoe Gnomes | Aug 20, 1997 | 7.0 |
| 17 | Lab of The Lost | Aug 20, 1997 | 7.0 |
| 18 | Labels | Aug 27, 1997 | 7.0 |
| 19 | Game Show | Aug 27, 1997 | 7.0 |
| 20 | Fantastic Boyage | Aug 27, 1997 | 7.0 |
| 21 | Filet of Soul | Sep 3, 1997 | 7.0 |
| 22 | Golden Diskette | Sep 3, 1997 | 7.0 |
| 23 | Snowdown | Sep 10, 1997 | 7.0 |
| 24 | *Figure Not Included | Sep 10, 1997 | 7.0 |
| 25 | Mock 5 | Sep 10, 1997 | 7.0 |
| 26 | Ewww That's Growth | Sep 17, 1997 | 7.0 |
| 27 | Nuclear Confusion | Sep 17, 1997 | 7.0 |
| 28 | Germ Warfare | Sep 17, 1997 | 7.0 |
| 29 | A Hard Day's Day | Sep 24, 1997 | 7.0 |
| 30 | Road Rash | Sep 24, 1997 | 7.0 |
| 31 | Ocean Commotion | Sep 24, 1997 | 7.0 |
| 32 | The Bus Boy | Oct 1, 1997 | 7.0 |
| 33 | The Justice Friends: Things that go Bonk in the Night | Oct 1, 1997 | 7.0 |
| 34 | Ol' McDexter | Oct 1, 1997 | 7.0 |
| 35 | Sassy Come Home | Oct 8, 1997 | 7.0 |
| 36 | Photo Finish | Oct 8, 1997 | 7.0 |
| 37 | Star Check Unconventional | Oct 15, 1997 | 7.0 |
| 38 | Dexter is Dirty | Oct 15, 1997 | 7.0 |
| 39 | Ice Cream Scream | Oct 15, 1997 | 7.0 |
| 40 | Decode of Honor | Oct 22, 1997 | 7.0 |
| 41 | World's Greatest Mom | Oct 22, 1997 | 7.0 |
| 42 | Ultrajerk 2000 | Oct 22, 1997 | 7.0 |
| 43 | Techno Turtle | Oct 29, 1997 | 7.0 |
| 44 | Surprise! | Oct 29, 1997 | 7.0 |
| 45 | Got Your Goat | Oct 29, 1997 | 7.0 |
| 46 | Dee Dee Be Deep | Nov 5, 1997 | 7.0 |
| 47 | 911 | Nov 5, 1997 | 7.0 |
| 48 | Down in the Dumps | Nov 5, 1997 | 7.0 |
| 49 | Unfortunate Cookie | Nov 12, 1997 | 7.0 |
| 50 | The Muffin King | Nov 12, 1997 | 7.0 |
| 51 | Picture Day | Nov 19, 1997 | 7.0 |
| 52 | Now That's a Stretch | Nov 19, 1997 | 7.0 |
| 53 | Dexter Detention | Nov 19, 1997 | 7.0 |
| 54 | Don't Be a Baby | Nov 26, 1997 | 7.0 |
| 55 | Dial M For Monkey: Peltra | Nov 26, 1997 | 7.0 |
| 56 | G.I.R.L. Squad | Nov 26, 1997 | 7.0 |
| 57 | Sports a Poppin' | Dec 3, 1997 | 7.0 |
| 58 | Koos a la Goop a Goop | Dec 3, 1997 | 7.0 |
| 59 | Project Dee Dee | Dec 3, 1997 | 7.0 |
| 60 | Topped Off | Jan 14, 1998 | 7.0 |
| 61 | Dee Dee's Tail | Jan 14, 1998 | 7.0 |
| 62 | No Power Trip | Jan 14, 1998 | 7.0 |
| 63 | Sister Mom | Jan 21, 1998 | 7.0 |
| 64 | The Laughing | Jan 21, 1998 | 7.0 |
| 65 | Dexter's Lab: A Story | Jan 28, 1998 | 7.0 |
| 66 | Coupon for Craziness | Jan 28, 1998 | 7.0 |
| 67 | Better Off Wet | Jan 28, 1998 | 7.0 |
| 68 | Critical Gas | Feb 4, 1998 | 7.0 |
| 69 | Let's Save the World You Jerk! | Feb 4, 1998 | 7.0 |
| 70 | Average Joe | Feb 4, 1998 | 7.0 |
| 71 | Rushmore Rumble | Feb 11, 1998 | 7.0 |
| 72 | A Boy and His Bug | Feb 11, 1998 | 7.0 |
| 73 | You Vegetabelieve It! | Feb 11, 1998 | 7.0 |
| 74 | Aye Aye Eyes | Feb 18, 1998 | 7.0 |
| 75 | Dee Dee and the Man | Feb 18, 1998 | 7.0 |
| 76 | Old Flame | Feb 25, 1998 | 7.0 |
| 77 | Don't Be a Hero | Feb 25, 1998 | 7.0 |
| 78 | My Favorite Martian | Feb 25, 1998 | 7.0 |
| 79 | Paper Route Bout | Mar 4, 1998 | 7.0 |
| 80 | The Old Switcharooms | Mar 4, 1998 | 7.0 |
| 81 | Trick or Treehouse | Mar 4, 1998 | 7.0 |
| 82 | Quiet Riot | Mar 11, 1998 | 7.0 |
| 83 | Accent You Hate | Mar 11, 1998 | 7.0 |
| 84 | Catch of the Day | Mar 11, 1998 | 7.0 |
| 85 | Dad is Disturbed | Mar 18, 1998 | 7.0 |
| 86 | Framed | Mar 18, 1998 | 7.0 |
| 87 | That's Using Your Head | Mar 18, 1998 | 7.0 |
| 88 | DiM | Mar 25, 1998 | 7.0 |
| 89 | Just an Old Fashioned Lab Song... | Mar 25, 1998 | 7.0 |
| 90 | Repairanoid | Mar 25, 1998 | 7.0 |
| 91 | Sdrawkcab | Apr 1, 1998 | 7.0 |
| 92 | The Continuum of Cartoon Fools | Apr 1, 1998 | 7.0 |
| 93 | Sun, Surf, and Science | Apr 1, 1998 | 7.0 |
| 94 | Big Bots | Apr 8, 1998 | 7.0 |
| 95 | Gooey Aliens that Control Your Mind | Apr 8, 1998 | 7.0 |
| 96 | Misplaced in Space | Apr 8, 1998 | 7.0 |
| 97 | Dee Dee's Rival | Apr 15, 1998 | 7.0 |
| 98 | Pslyghtly Psycho | Apr 15, 1998 | 7.0 |
| 99 | Game for a Game | Apr 15, 1998 | 7.0 |
| 100 | Blackfoot and Slim | Apr 22, 1998 | 7.0 |
| 101 | Trapped with a Vengeance | Apr 22, 1998 | 7.0 |
| 102 | The Parrot Trap | Apr 22, 1998 | 7.0 |
| 103 | Dexter and Computress Get Mandark! | Apr 29, 1998 | 7.0 |
| 104 | The Justice Friends: Pain in the Mouth | Apr 29, 1998 | 7.0 |
| 105 | Dexter Vs. Santa's Claws | Apr 29, 1998 | 7.0 |
| 106 | Dyno-Might | May 6, 1998 | 7.0 |
| 107 | LABretto | May 6, 1998 | 7.0 |
| 108 | Last But Not Beast | Jun 15, 1998 | 7.0 |
36 episodes • 2001Avg: 7.0
| # | Episode | Air Date | Rating |
|---|---|---|---|
| 1 | Streaky Clean | Nov 16, 2001 | 7.0 |
| 2 | A Dad Cartoon | Nov 16, 2001 | 7.0 |
| 3 | Sole Brother | Nov 16, 2001 | 7.0 |
| 4 | Mind Over Chatter | Nov 16, 2001 | 7.0 |
| 5 | A Quackor Cartoon | Nov 16, 2001 | 7.0 |
| 6 | Momdark | Nov 16, 2001 | 7.0 |
| 7 | Copping an Attitude | Nov 30, 2001 | 7.0 |
| 8 | A Failed Lab Experiment | Nov 30, 2001 | 7.0 |
| 9 | The Grand Daddy of All Inventions | Nov 30, 2001 | 7.0 |
| 10 | Poppa Wheely | Jan 18, 2002 | 7.0 |
| 11 | A Mom Cartoon | Jan 18, 2002 | 7.0 |
| 12 | The Mock Side of the Moon | Jan 18, 2002 | 7.0 |
| 13 | If Memory Serves | Feb 22, 2002 | 7.0 |
| 14 | A Mandark Cartoon | Feb 22, 2002 | 7.0 |
| 15 | Tele Trauma | Feb 22, 2002 | 7.0 |
| 16 | A Boy Named Sue | Mar 29, 2002 | 7.0 |
| 17 | Lab on the Run | Mar 29, 2002 | 7.0 |
| 18 | Dos Boot | Jun 7, 2002 | 7.0 |
| 19 | A Dee Dee Cartoon | Jun 7, 2002 | 7.0 |
| 20 | Would You Like That In The Can | Jun 7, 2002 | 7.0 |
| 21 | That Magic Moment | Jun 14, 2002 | 7.0 |
| 22 | A Silent Cartoon | Jun 14, 2002 | 7.0 |
| 23 | Opposites Attract | Jun 14, 2002 | 7.0 |
| 24 | Comic Relief | Jun 21, 2002 | 7.0 |
| 25 | A Third Dad Cartoon | Jun 21, 2002 | 7.0 |
| 26 | RoboDexo 3000 | Jun 21, 2002 | 7.0 |
| 27 | Glove at First Sight | Jun 28, 2002 | 7.0 |
| 28 | A Mom & Dad Cartoon | Jun 28, 2002 | 7.0 |
| 29 | Smells Like Victory | Jun 28, 2002 | 7.0 |
| 30 | Oh, Brother | Jul 5, 2002 | 7.0 |
| 31 | Another Dad Cartoon | Jul 5, 2002 | 7.0 |
| 32 | Bar Exam | Jul 5, 2002 | 7.0 |
| 33 | Jeepers, Creepers, Where is Peepers? | Jul 12, 2002 | 7.0 |
| 34 | Go, Dexter Family, Go! | Jul 12, 2002 | 7.0 |
| 35 | Scare Tactics | Sep 20, 2002 | 7.0 |
| 36 | My Dad vs. Your Dad | Sep 20, 2002 | 7.0 |
38 episodes • 2002Avg: 7.0
| # | Episode | Air Date | Rating |
|---|---|---|---|
| 1 | Beau Tie | Nov 22, 2002 | 7.0 |
| 2 | Remember Me? | Nov 22, 2002 | 7.0 |
| 3 | Overlabbing | Nov 22, 2002 | 7.0 |
| 4 | Sis-Tem Error | Apr 25, 2003 | 7.0 |
| 5 | Bad Cable Manners | Apr 25, 2003 | 7.0 |
| 6 | Dexter's Library | Apr 25, 2003 | 7.0 |
| 7 | The Scrying Game | May 2, 2003 | 7.0 |
| 8 | Monstrosi-Dee Dee | May 2, 2003 | 7.0 |
| 9 | Dad Man Walking | May 2, 2003 | 7.0 |
| 10 | Dexter's Little Dilemma | May 9, 2003 | 7.0 |
| 11 | Faux Chapeau | May 9, 2003 | 7.0 |
| 12 | D² | May 9, 2003 | 7.0 |
| 13 | Head Band | May 16, 2003 | 7.0 |
| 14 | Stuffed Animal House | May 16, 2003 | 7.0 |
| 15 | Used Ink | May 16, 2003 | 7.0 |
| 16 | School Girl Crushed | May 23, 2003 | 7.0 |
| 17 | Chess Mom | May 23, 2003 | 7.0 |
| 18 | Father Knows Least | May 23, 2003 | 7.0 |
| 19 | Dexter the Barbarian | May 30, 2003 | 7.0 |
| 20 | Tuber Time | May 30, 2003 | 7.0 |
| 21 | Sore Eyes | May 30, 2003 | 7.0 |
| 22 | Babe Sitter | Sep 5, 2003 | 7.0 |
| 23 | Mountain Mandark | Sep 5, 2003 | 7.0 |
| 24 | 2Geniuses 2Gether 4Ever | Sep 5, 2003 | 7.0 |
| 25 | Height Unseen | Sep 12, 2003 | 7.0 |
| 26 | Bygone Errors | Sep 12, 2003 | 7.0 |
| 27 | Folly Calls | Sep 12, 2003 | 7.0 |
| 28 | Voice Over | Sep 19, 2003 | 7.0 |
| 29 | The Blonde Leading the Blonde | Sep 19, 2003 | 7.0 |
| 30 | Comic Stripper | Sep 19, 2003 | 7.0 |
| 31 | Tee Party | Sep 26, 2003 | 7.0 |
| 32 | Dexter's Wacky Races | Sep 26, 2003 | 7.0 |
| 33 | The Lab of Tomorrow | Nov 4, 2003 | 7.0 |
| 34 | Chicken Scratch | Nov 4, 2003 | 7.0 |
| 35 | Garage Sale | Nov 4, 2003 | 7.0 |
| 36 | They Got Chops | Nov 20, 2003 | 7.0 |
| 37 | Poetic Injustice | Nov 20, 2003 | 7.0 |
| 38 | Comedy of Feathers | Nov 20, 2003 | 7.0 |
