Full Cast & Crew
Top Billed Cast
Full Cast
Christine Cavanaugh
Dexter (Voice)
Charlie Adler
I.R. Baboon (Voice) / Cow (Voice) / Chicken (Voice) / Red Guy (Voice)
Richard Steven Horvitz
Billy (Voice)
Grey DeLisle
Mandy (Voice)
Brenda Vaccaro
Bunny Bravo (Voice)
Greg Eagles
The Grim Reaper (Voice)
Tom Kane
Professor Utonium (Voice)
Tom Kenny
The Mayor (Voice)
Charlie Adler
I.R. Baboon
Michael Dorn
I.M. Weasel (Voice)
Marty Grabstein
Courage (Voice)
Thea White
Muriel Bagge
Thea White
Muriel Bagge (Voice)
Allison Moore
Dee Dee (voice)
Frank Welker
(voices)
Mindy Cohn
(voice)
Jim Cummings
(voice)
Mark Hamill
(voices)
William Hanna
(voice)
Joseph Barbera
(voice)
Ted Turner
(archive footage)
Don Messick
(archive footage)
Crew
Joseph Barbera
Characters
William Hanna
Characters
Joseph Barbera
Executive Producer
Joseph Barbera
Director