Season
- Season 4 2002-11-22
- Season 3 2001-11-16
- Season 2 1997-07-16
- Season 1 1996-04-28
- Season 0 1995-02-26
Episode
- Episode 1: Beau Tie
- Episode 2: Remember Me?
- Episode 3: Overlabbing
- Episode 4: Sis-Tem Error
- Episode 5: Bad Cable Manners
- Episode 6: Dexter's Library
- Episode 7: The Scrying Game
- Episode 8: Monstrosi-Dee Dee
- Episode 9: Dad Man Walking
- Episode 10: Dexter's Little Dilemma
- Episode 11: Faux Chapeau
- Episode 12: D²
- Episode 13: Head Band
- Episode 14: Stuffed Animal House
- Episode 15: Used Ink
- Episode 16: School Girl Crushed
- Episode 17: Chess Mom
- Episode 18: Father Knows Least
- Episode 19: Dexter the Barbarian
- Episode 20: Tuber Time
- Episode 21: Sore Eyes
- Episode 22: Babe Sitter
- Episode 23: Mountain Mandark
- Episode 24: 2Geniuses 2Gether 4Ever
- Episode 25: Height Unseen
- Episode 26: Bygone Errors
- Episode 27: Folly Calls
- Episode 28: Voice Over
- Episode 29: The Blonde Leading the Blonde
- Episode 30: Comic Stripper
- Episode 31: Tee Party
- Episode 32: Dexter's Wacky Races
- Episode 33: The Lab of Tomorrow
- Episode 34: Chicken Scratch
- Episode 35: Garage Sale
- Episode 36: They Got Chops
- Episode 37: Poetic Injustice
- Episode 38: Comedy of Feathers
Dexter's Laboratory Season 4 Sis-Tem Error
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.
