Casey Kasem
(voices)
Acting
E. G. Daily
Buttercup (Voice)
Acting
Mae Whitman
Little Suzy (Voice)
Acting
Tara Strong
Bubbles (Voice)
Acting
Jeff Bennett
Jhonny Bravo (Voice)
Acting
Cathy Cavadini
Blossom (Voice)
Acting
Christine Cavanaugh
Dexter (Voice)
Acting
Charlie Adler
I.R. Baboon (Voice) / Cow (Voice) / Chicken (Voice) / Red Guy (Voice)
Acting
Richard Steven Horvitz
Billy (Voice)
Acting
Grey DeLisle
Mandy (Voice)
Acting
Brenda Vaccaro
Bunny Bravo (Voice)
Acting
Greg Eagles
The Grim Reaper (Voice)
Acting
Tom Kane
Professor Utonium (Voice)
Acting
Tom Kenny
The Mayor (Voice)
Acting
Charlie Adler
I.R. Baboon
Acting
Michael Dorn
I.M. Weasel (Voice)
Acting
Marty Grabstein
Courage (Voice)
Acting
Thea White
Muriel Bagge
Acting
Thea White
Muriel Bagge (Voice)
Acting
Allison Moore
Dee Dee (voice)
Acting
Frank Welker
(voices)
Acting
Mindy Cohn
(voice)
Acting
Jim Cummings
(voice)
Acting
Mark Hamill
(voices)
Acting
William Hanna
(voice)
Directing
Joseph Barbera
(voice)
Production
Ted Turner
(archive footage)
Production
Don Messick
(archive footage)
Acting