Darleen Carr
— Margo (voice)
Rob Paulsen
— Moki (voice)
Alan Oppenheimer
— Jonah (voice)
Tony Jay
— God (voice)
Nancy Dussault
— Martha (voice)
Kristoffer Tabori
— Young Jonah (voice)
Peter Cullen
— Ninevite King (voice)
Ed Gilbert
— Micah (voice)
Darryl Hickman
— Derek (voice)
Nancy Linari
— Harem (voice)
Michael Rye
— Narrator (voice)