Jim Hill
Doug McClure
Dr. Susan Drake
Ann Turkel
Dickie Moore
Don Maxwell
Billy
David Strassman
Mike Michaels, Radio Announcer
Greg Travis
Sandy, Miss Salmon
Linda Shayne
Becky
Lisa Glaser
Jake Potter
Bruce Monette
Amy
Amy Barrett
John, Hill Baby
Shawn Erler
Old Man
Frank Arnold
Self on Piano
Jo Williamson
Hank Slattery
Vic Morrow
Bass
Henry T. Williams
Banjo
Lyle Isom
Fiddle
Jonathan Lehan
Humanoid (uncredited)
Rob Bottin
Humanoid Killer (uncredited)
Kent Adamson
Steve Johnson
Larry Wessel
Carol Hill
Cindy Weintraub
Johnny Eagle
Anthony Pena
Linda Beale
Denise Galik
Peggy Larson
Lynn Theel
Jerry Potter
Meegan King
Tommy Hill
Breck Costin
Deke Jensen
Hoke Howell
Production Office Assistant
Gale Anne Hurd
Producer
Roger Corman
Director
Jimmy T. Murakami
Barbara Peeters
Original Music Composer
James Horner
Electrician
Rowdy Herrington
Second Unit
Peter Manoogian
Editor
Mark Goldblatt
Screenplay
William Martin
Martin B. Cohen
Director of Photography
Daniel Lacambre
Makeup Effects
Special Effects
Roger George
Chris Walas
Creature Design
Stunt Coordinator
Jack Tyree
Stunts
Diamond Farnsworth