TV Dexter's Laboratory - Specials Dexter's Laboratory - Specials 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 - Specials 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 0 :Episode 1 Dexter's Laboratory Dexter's Laboratory 1995-02-26 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 0 :Episode 2 The Big Sister The Big Sister 1996-03-10 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 0 :Episode 3 Old Man Dexter Old Man Dexter 1996-03-24 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 0 :Episode 4 Dumb Like Dee Dee Dumb Like Dee Dee 1996-04-14 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 0 :Episode 5 Ego Trip Ego Trip 1999-12-10 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 0 :Episode 6 Rude Removal Rude Removal 2013-01-22 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 0 :Episode 7 What's His Name? What's His Name? 2000-06-30 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 0 :Episode 8 Secret Formula Secret Formula 2002-08-23 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 0 :Episode 9 Back to the Lab Back to the Lab 2002-08-16 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...