Casey Kasem
(voices)
Elizabeth Daily
Buttercup (Voice)
Mae Whitman
Little Suzy (Voice)
Tara Strong
Bubbles (Voice)
Jeff Bennett
Jhonny Bravo (Voice)
Cathy Cavadini
Blossom (Voice)
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)
I.R. Baboon
Michael Dorn
I.M. Weasel (Voice)
Marty Grabstein
Courage (Voice)
Thea White
Muriel Bagge
Muriel Bagge (Voice)
Allison Moore
Dee Dee (voice)
Frank Welker
Mindy Cohn
(voice)
Jim Cummings
Mark Hamill
William Hanna
Joseph Barbera
Ted Turner
(archive footage)
Don Messick
Director
Executive Producer
Characters
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