- Jim J. Bullock
- Â Adam Seymour 'Queer Duck' Duckstein 20 episodes, 2000-2002
- Kevin Michael Richardson
- Â Stephen Arlo 'Openly' Gator 19 episodes, 2000-2002
- Billy West
- Â Bi-Polar Bear / ... 18 episodes, 2000-2002
- Maurice LaMarche
- Â Oscar Wildcat / ... 17 episodes, 2000-2002
- Tress MacNeille
- Â Dr. Laura / ... 12 episodes, 2000-2002
- Nick Jameson
- Â Narrator 9 episodes, 2000-2002
- Estelle Harris
- Â Mrs. Duckstein 5 episodes, 2000-2002