- Willie Rushton as Nosey the Alien
- Bob Newhart as Nosey's Father
- Julie Andrews as Nosey's Mother
- Christopher Lloyd as Dr. Wickersham
- Stan Lee as News Reporter
- Fiona Fullerton as Mona
- Mickey Rooney as Claude
- Dom DeLuise as Hugh
- Charles Nelson Reilly as McKimson
- Frank Welker as Alax the Donkey
- Laura Summer as The Blue Unicorn
- Peter Hawkins as Gordon the Cat
- Brian Wilde as Figtree the Dog
- Janet Waldo as Clementine the Canary
- The film was released on July 9, 1982.
- The second Shires animated theatrical feature to receive a PG rating.
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