Casey Kasem
(voices)

E. G. 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

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)

Michael Dorn
I.M. Weasel (Voice)

Marty Grabstein
Courage (Voice)

Thea White
Muriel Bagge (Voice)

Allison Moore
Dee Dee (voice)