Burgess Meredith

Puff the Magic Dragon (voice)

David Mendenhall

Terry (voice)

Joan Gerber

Mother / Teacher (voice)

Bob Holt

Father (voice)

Billy Jayne

Boy (voice)

Diana Dumpis

Girl (voice)

Hal Smith

Professor Katzendorfer / Bust / World (voice)

Robert Ridgely

Mr. Nobody / Guard (voice)

Billy Jayne

(voice)