- Patrick Read Johnsonscreenplay and
- Tonya Williams(as Tonya Lee Williams)
- James Eustermann(as Jim Eusterman)
- Jeff Winkless(voice) (as Jeff Winklis)
- Bruce Lanoil(voice)
- Kirk R. Thatcher(voice) (as Kirk Thatcher)
Rest of cast listed alphabetically
- Patrick Brock(uncredited)
- Luigi Cingolaniproducer
- Jason Clarkassociate producer
- John S. Curranline producer
- Caroline Phamassociate producer (as Caroline Pham Johnson)
- Djordje Zecevicexecutive producer (as George Zecevic)
- David E. Russocomposer (as David Russo)
- James L. Carterdirector of photography
- Barbara Doddcasting director (as Barbara Remsen)
- Steve Fujicasting director (uncredited)
- Anton Tremblayproduction designer (as Tony Tremblay)
- Barrie Bucknerhair assistant / makeup assistant
- Laura Gormanhair assistant / makeup assistant
- Suzanne Parker Sandershair stylist supervisor (as Suzanne Sanders) / makeup supervisor (as Suzanne Sanders)
- Rob Sherwoodmakeup artist
- Daniel J. Heffnerexecutive in charge of production
- Kelly Van Hornproduction manager
- David Cass Jr.second assistant director (as Dave Cass Jr.)
- Alexandra E. Percesecond second assistant director
- Scott Andrew Resslersecond unit director (as Scott Ressler)
- Kelly Van Hornfirst assistant director
- Greg Aronowitzmodel maker / prop builder
- Ted Bernerproperty master
- John Davenportcarpenter
- Charles Doanecarpenter
- Russell Draperset dresser
- Mitch Eakincarpenter
- Randy Echolscarpenter
- Jim Eustermannprop maker
- John Fradycarpenter
- Gordon Germainepropmaker
- Robert J. Anderson Jr.production sound mixer
- Ara Ashjiansound recordist
- Zane D. Brucefoley artist (as Zane Bruce)
- Gregory Cheeversound recordist (as Greg Cheever)
- Andy D'Addariore-recording mixer
- Jeffrey J. Haboushre-recording mixer (as Jeffery J. Haboush)
- Harry Hitneradr editor / dialogue editor
- Jim Hodsonfoley recordist (as James Hodson) / sound effects recordist (as James Hodson)
- Allen Hurdsound recordist
- Bret Alexandermodel & prop maker
- Wayne Alexandermodel & prop maker
- Steve Berritlab technician
- Mark Carbirinolab technician
- Fox Carneymodel & prop maker
- Frank Cegliaspecial effects supervisor
- Sandy Colloralab technician: head Martian crew (as Sandy Collara)
- John Criswellalien special effects: supervisor / animatronic aliens: Shortstuff creator
- James Eustermannmodel & prop maker
- Greg Aronowitzmatte painter
- Nina Chierichettirotoscope artist: Perpetual Motion
- Heather Davis Bakerroto artist
- Isobel DeLucacrew: Perpetual Motion
- Charles L. Financecrew: Perpetual Motion
- Robert Habrosoptical department supervisor: Perpetual Motion
- Steve Hydedigital effects artist
- Jennifer Knollproduction supervisor
- John Knollvisual effects supervisor
- Pete Kozachikcamera operator: lead
- Lori Crowderstunts (as Lori Estep)
- Phil Culottastunts
- David M. Gravesstunt co-coordinator (as David Graves)
- Fred Lernerstunts
- Bernie Pockstunts (as Bernhard Pock)
- Spiro Razatosstunt coordinator
- Ronnie Rondell Jr.stunts (as Ronald Rondell)
- Gregg Sargeantstunts (uncredited)
- Patric J. Abaravichbest boy electric (as Patric Abaravich)
- Steve Alessikey grip
- David E. Elkinsassistant camera: additional camera
- Craig Horwitzdolly grip
- Shane Hurlbutdolly grip (as L. Shane Hurlbut)
- Mark Jacksonfirst assistant camera (as Mark R. Jackson)
- Leslie Charles MacDowellelectrician (as Leslie C. MacDowell)
- Greg Aronowitzcostume illustrator
- Mell Petersenwardrobe assistant
- Harry Hitnerassistant editor
- Terry Hubbardassistant editor
- Gerrit V. Folsomlocation manager (as Gerrit Folsom)
- Michael McClurecomposer: additional music
- David E. Russoconductor (as David Russo)
- Tim Simonecconductor / orchestrator
- Katherine Lewisscript supervisor
- 'Wild' Bill Mocktransportation captain (as 'Wild Bill' Mock)
- Kip Parkerdriver: honeywagon (as Clifford J. Parker)
- Griff Rugglestransportation coordinator
- Mark Twogooddriver
- Danny Westerbergtransportation captain
- Michael C. Wolcottchapman crane driver
- Bret Alexanderon-set supervisor
- James G. Ankaset detailer
- Wili Baronetproduction consultant
- Don Brewtonpolice motor officer
- Paul A. Calabriaanimal trainer (as Paul Calabria)
- John Criswellanimatronic designer/puppeteer
- Dawn Todd Curfmanproduction coordinator (as Dawn Todd)
- Michael Donnerproduction accountant
- Carol Gansstudio teacher
- Marty Brenneisspecial thanks (as Marty Brennis)
- Linwood G. Dunnspecial thanks
- John Ellisspecial thanks
- George Joblovespecial thanks
- Douglas Trumbullspecial thanks
- Harry Waltonspecial thanks
- Richard Yuricichspecial thanks
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