Zummi Gummi (voice)
Paul Winchell
Gruffi Gummi / Sir Tuxford / Toadwart
Bill Scott
Grammi Gummi (voice)
June Foray
Tummi Gummi (voice)
Lorenzo Music
Sunni Gummi (voice)
Katie Leigh
Cubbi Gummi/Princess Calla
Noelle North
Cubbi Gummi / Princess Calla (voice)
Nichelle North
Gruffi Gummi (voice)
Corey Burton
Duke Igthorn / King Gregor (voice)
Michael Rye
Cavin (voice)
Christian Jacobs
Unwin / Ogres (voice)
Will Ryan
Sir Tuxford / Artie Deco (voice)
Brian Cummings
Zummi Gummi (voice) / Man (voice) / Nip
Jim Cummings
Gusto Gummi (voice) / Gusto Gummi / Sir Blastus (voice)
Rob Paulsen
Zephyrs (voice) / Henchman / Horse
Frank Welker
Lady Bane (voice) / Mother / Boy (voice)
Tress MacNeille
Cavin (voice)
Jason Marsden
Sir Thornberry (voice)
Walker Edmiston
Cavin (voice)
R.J. Williams
Gritty Gummi (voice) / Kerwin the Conqueror (voice) / Knight (voice)
Peter Cullen
Sir Tuxford (voice) / Sir Tuxford / Town Crier (voice)
Roger C. Carmel