Jim Jordan
Orville (voice)

John McIntire
Rufus (voice)

Michelle Stacy
Penny (voice)

Bernard Fox
The Chairman (voice)
Larry Clemmons
Gramps (voice)

James MacDonald
Evinrude / Brutus / Nero (voice)

George Lindsey
Rabbit (voice)
Bill McMillian
TV Announcer (voice)

Dub Taylor
Digger (voice)

John Fiedler
Owl (voice)