TV Dexter's Laboratory - Season 3 Episode 30 : Oh, Brother Dexter's Laboratory - Season 3 Episode 30 : Oh, Brother 7.7/10 by 849 users Dexter uses his newest creation to turn Dee Dee into a boy, but the male version of Dee Dee (Doo Dee) is not as cool as Dexter it would. Details Casts Posters Images Title Dexter's Laboratory - Season 3 Episode 30 : Oh, Brother 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 3 :Episode 1 Streaky Clean Streaky Clean 2001-11-16 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... Dexter's Laboratory Season 3 :Episode 2 A Dad Cartoon A Dad Cartoon 2001-11-16 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... Dexter's Laboratory Season 3 :Episode 3 Sole Brother Sole Brother 2001-11-16 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... Dexter's Laboratory Season 3 :Episode 4 Mind Over Chatter Mind Over Chatter 2001-11-16 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... Dexter's Laboratory Season 3 :Episode 5 A Quackor Cartoon A Quackor Cartoon 2001-11-16 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... Dexter's Laboratory Season 3 :Episode 6 Momdark Momdark 2001-11-16 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... Dexter's Laboratory Season 3 :Episode 7 Copping an Attitude Copping an Attitude 2001-11-30 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 3 :Episode 8 A Failed Lab Experiment A Failed Lab Experiment 2001-11-30 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 3 :Episode 9 The Grand Daddy of All Inventions The Grand Daddy of All Inventions 2001-11-30 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 3 :Episode 10 Poppa Wheely Poppa Wheely 2002-01-18 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 3 :Episode 11 A Mom Cartoon A Mom Cartoon 2002-01-18 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 3 :Episode 12 The Mock Side of the Moon The Mock Side of the Moon 2002-01-18 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 3 :Episode 13 If Memory Serves If Memory Serves 2002-02-22 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 3 :Episode 14 A Mandark Cartoon A Mandark Cartoon 2002-02-22 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 3 :Episode 15 Tele Trauma Tele Trauma 2002-02-22 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 3 :Episode 16 A Boy Named Sue A Boy Named Sue 2002-03-29 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 3 :Episode 17 Lab on the Run Lab on the Run 2002-03-29 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 3 :Episode 18 Dos Boot Dos Boot 2002-06-07 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 3 :Episode 19 A Dee Dee Cartoon A Dee Dee Cartoon 2002-06-07 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 3 :Episode 20 Would You Like That In The Can Would You Like That In The Can 2002-06-07 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 3 :Episode 21 That Magic Moment That Magic Moment 2002-06-14 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 3 :Episode 22 A Silent Cartoon A Silent Cartoon 2002-06-14 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 3 :Episode 23 Opposites Attract Opposites Attract 2002-06-14 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 3 :Episode 24 Comic Relief Comic Relief 2002-06-21 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 3 :Episode 25 A Third Dad Cartoon A Third Dad Cartoon 2002-06-21 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 3 :Episode 26 RoboDexo 3000 RoboDexo 3000 2002-06-21 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 3 :Episode 27 Glove at First Sight Glove at First Sight 2002-06-28 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 3 :Episode 28 A Mom & Dad Cartoon A Mom & Dad Cartoon 2002-06-28 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 3 :Episode 29 Smells Like Victory Smells Like Victory 2002-06-28 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 3 :Episode 30 Oh, Brother Oh, Brother 2002-07-05 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 3 :Episode 31 Another Dad Cartoon Another Dad Cartoon 2002-07-05 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 3 :Episode 32 Bar Exam Bar Exam 2002-07-05 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 3 :Episode 33 Jeepers, Creepers, Where is Peepers? Jeepers, Creepers, Where is Peepers? 2002-07-12 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 3 :Episode 34 Go, Dexter Family, Go! Go, Dexter Family, Go! 2002-07-12 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 3 :Episode 35 Scare Tactics Scare Tactics 2002-09-20 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 3 :Episode 36 My Dad vs. Your Dad My Dad vs. Your Dad 2002-09-20 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...