- Michael Schultzdirector (directed by)
- Joel Schumacherwritten by
- Irwin Corey(as Prof. Irwin Corey)
- Renn Woods(as Ren Woods)
- Tim Thomerson(as Timothy Thomerson)
- Brooke Adams(scenes deleted)
- Benny Baker(scenes deleted)
- Danny DeVito(scenes deleted)
- Lewis Lillian(scenes deleted)
- Danny Tucker(scenes deleted)
- Sunny Woods(scenes deleted)
Rest of cast listed alphabetically
- Brian Gusse(uncredited)
- Anita Pointer(uncredited)
- Bonnie Pointer(uncredited)
- June Pointer(uncredited)
- Ruth Pointer(uncredited)
- Woni Spotts(uncredited)
- Barbara Walden(uncredited)
- Art Linsonproducer (produced by)
- Don Phillipsassociate producer
- Gary Strombergproducer (produced by)
- Norman Whitfieldcomposer (music composed by)
- Frank Stanleydirector of photography
- Christopher Holmeseditor (edited by)
- Don Phillipscasting director (casting)
- Anthony C. Montenaroset decorator (as A.C. Montenaro)
- Chuck Craftsmakeup artist
- Robert L. Stevensonhair stylist (as Robert Stevenson)
- Charles Clementpost production operations head (uncredited)
- Phil Bowlesfirst assistant director
- Daniel Franklinsecond assistant director (as Dan Franklin)
- Richard Hashimotosecond assistant director
- Drew Struzanposter artist (uncredited)
- Peter Berkossound editor
- Baker Bigsbymusic mix engineer
- Roger Heman Jr.sound (uncredited)
- Earl Maderysound (uncredited)
- Dennis C. Salcedooptical sound recordist (uncredited)
- Roger Swordsound editor (uncredited)
- Kevin Pikespecial effects technician
- Glenn R. Wilderstunts (uncredited)
- Rick Mitchellassistant editor
- John Caper Jr.music editor
- Paul Risermusic arranger: songs
- Norman Whitfieldmusic producer
- Baker Bigsbymusic mix engineer (uncredited)
- Barbara Amatoscript supervisor
- Chris Haynesdriver (uncredited)
- Michael Hamiltontitle designer
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