TV Dexter's Laboratory - Season 1 Dexter's Laboratory - Season 1 7.7/10 by 849 users 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. Details Casts Posters Images Title Dexter's Laboratory - Season 1 Alternative Titles Dexter First Air Date 1996-04-28 Last Air Date 2003-11-20 Number of Episodes 220 Number of Seasons 4 Genres Animation, Comedy, Sci-Fi & Fantasy, Networks Cartoon Network, Casts Candi Milo, Kat Cressida, Jeff Bennett, Kath Soucie, Eddie Deezen Plot Keywords , Dexter (voice) Candi Milo Dee Dee (voice) Kat Cressida Dad (voice) Jeff Bennett Mom (voice) Kath Soucie Mandark (voice) Eddie Deezen Episodes List Dexter's Laboratory Season 1 :Episode 1 DeeDeemensional DeeDeemensional 1996-04-28 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... Dexter's Laboratory Season 1 :Episode 2 Dial M for Monkey: Magmanamus Dial M for Monkey: Magmanamus 1996-04-28 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... Dexter's Laboratory Season 1 :Episode 3 Maternal Combat Maternal Combat 1996-04-28 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... Dexter's Laboratory Season 1 :Episode 4 Dexter Dodgeball Dexter Dodgeball 1996-05-05 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... Dexter's Laboratory Season 1 :Episode 5 Dial M for Monkey: Rasslor Dial M for Monkey: Rasslor 1996-05-05 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... Dexter's Laboratory Season 1 :Episode 6 Dexter's Assistant Dexter's Assistant 1996-05-05 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... Dexter's Laboratory Season 1 :Episode 7 Dexter's Rival Dexter's Rival 1996-05-12 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... Dexter's Laboratory Season 1 :Episode 8 Dial M for Monkey: Simion Dial M for Monkey: Simion 1996-05-12 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... Dexter's Laboratory Season 1 :Episode 9 Old Man Dexter Old Man Dexter 1996-05-12 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... Dexter's Laboratory Season 1 :Episode 10 Double Trouble Double Trouble 1996-05-19 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... Dexter's Laboratory Season 1 :Episode 11 Dial M for Monkey: Barbequor Dial M for Monkey: Barbequor 1996-05-19 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... Dexter's Laboratory Season 1 :Episode 12 Changes Changes 1996-05-19 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... Dexter's Laboratory Season 1 :Episode 13 Jurassic Pooch Jurassic Pooch 1996-05-26 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... Dexter's Laboratory Season 1 :Episode 14 Dial M For Monkey: Orgon Grindor Dial M For Monkey: Orgon Grindor 1996-05-26 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... Dexter's Laboratory Season 1 :Episode 15 Dimwit Dexter Dimwit Dexter 1996-05-26 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... Dexter's Laboratory Season 1 :Episode 16 Dee Dee's Room Dee Dee's Room 1996-06-02 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... Dexter's Laboratory Season 1 :Episode 17 Dial M For Monkey: Huntor Dial M For Monkey: Huntor 1996-06-02 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... Dexter's Laboratory Season 1 :Episode 18 The Big Sister The Big Sister 1996-06-02 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... Dexter's Laboratory Season 1 :Episode 19 Star Spangled Sidekicks Star Spangled Sidekicks 1996-11-20 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... Dexter's Laboratory Season 1 :Episode 20 The Justice Friends: TV Super Pals The Justice Friends: TV Super Pals 1996-11-20 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... Dexter's Laboratory Season 1 :Episode 21 Game Over Game Over 1996-11-20 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... Dexter's Laboratory Season 1 :Episode 22 Babysitter Blues Babysitter Blues 1996-11-27 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... Dexter's Laboratory Season 1 :Episode 23 The Justice Friends: Valhallen's Room The Justice Friends: Valhallen's Room 1996-11-27 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... Dexter's Laboratory Season 1 :Episode 24 Dream Machine Dream Machine 1996-11-27 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... Dexter's Laboratory Season 1 :Episode 25 Dollhouse Drama Dollhouse Drama 1996-12-04 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... Dexter's Laboratory Season 1 :Episode 26 The Justice Friends: Krunk's Date The Justice Friends: Krunk's Date 1996-12-04 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... Dexter's Laboratory Season 1 :Episode 27 The Big Cheese The Big Cheese 1996-12-04 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... Dexter's Laboratory Season 1 :Episode 28 Way of the Dee Dee Way of the Dee Dee 1996-12-11 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... Dexter's Laboratory Season 1 :Episode 29 The Justice Friends: Say Uncle Sam The Justice Friends: Say Uncle Sam 1996-12-11 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... Dexter's Laboratory Season 1 :Episode 30 Tribe Called Girl Tribe Called Girl 1996-12-11 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... Dexter's Laboratory Season 1 :Episode 31 Spacecase Spacecase 1996-12-18 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... Dexter's Laboratory Season 1 :Episode 32 The Justice Friends: Ratman The Justice Friends: Ratman 1996-12-18 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... Dexter's Laboratory Season 1 :Episode 33 Dexter's Debt Dexter's Debt 1996-12-18 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... Dexter's Laboratory Season 1 :Episode 34 The Justice Friends: Bee Where? The Justice Friends: Bee Where? 1996-12-25 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... Dexter's Laboratory Season 1 :Episode 35 Mandarker Mandarker 1996-12-25 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... Dexter's Laboratory Season 1 :Episode 36 Inflata Dee Dee Inflata Dee Dee 1997-01-01 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... Dexter's Laboratory Season 1 :Episode 37 The Justice Friends: Can't Nap The Justice Friends: Can't Nap 1997-01-01 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... Dexter's Laboratory Season 1 :Episode 38 Monstory Monstory 1997-01-01 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...