cast
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Arnold Schwarzenegger
Douglas Quaid / Hauser
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Rachel Ticotin
Melina
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Sharon Stone
Lori Quaid
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Ronny Cox
Vilos Cohaagen
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Michael Ironside
Richter
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Marshall Bell
George / Kuato
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Mel Johnson Jr.
Benny
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Michael Champion
Helm
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Roy Brocksmith
Dr. Edgemar
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Ray Baker
Bob McClane
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Rosemary Dunsmore
Dr. Lull
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David Knell
Ernie
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Alexia Robinson
Tiffany
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Dean Norris
Tony
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Mark Carlton
Bartender
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Debbie Lee Carrington
Thumbelina
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Lycia Naff
Mary
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Robert Costanzo
Harry
- Michael LaGuardia Stevens
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Priscilla Allen
Fat Lady
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Ken Strausbaugh
Immigration Officer
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Marc Alaimo
Everett
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Michael Gregory
Rebel Lieutenant
- Ken Gildin Hotel Clerk
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Mickey Jones
Burly Miner
- Ellen Gollas Martian Wife
- Parker Whitman Martian Husband
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Gloria Dorson
Woman in Phone Booth
- Erika Carlsson Miss Lonelyhearts
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Benny Corral
Punk Cabbie
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Bob Tzudiker
Doctor
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Erik Cord
Lab Assistant
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Frank Kopyc
Technician
- Chuck Sloan Scientist
- Dave Nicolson Scientist
- Paula McClure Newscaster
- Rebecca Ruth Reporter
- Milt Tarver Commercial Announcer
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Roger Cudney
Agent
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Monica Steuer
Mutant Mother
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Sasha Rionda
Mutant Child
- Linda Howell Tennis Pro
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Robert Picardo
Johnnycab (voice)
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Kamala Lopez
Additional Voices (voice)
- Morgan Lofting Additional Voices (voice)
- Patti Attar Additional Voices (voice)
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Bob Bergen
Additional Voices (voice)
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Joe Unger
Additional Voices (voice)
- Karlyn Michelson Additional Voices (voice)
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Joel Kramer
Harry's Henchman (uncredited)
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Andy Armstrong
Richter's Henchman (uncredited)
- Graeme Crowther Richter's Subway Agent (uncredited)
- Thomas Ebert Subway Rider (uncredited)
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Frank Allen Forbes
Vestron Soldier (uncredited)
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Allan Graf
Harry's Henchman (uncredited)
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Peter Kent
Richter's Subway Agent (uncredited)
- Steven Lambert Man Standing Behind Fat Lady (uncredited)
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Billy D. Lucas
Richter's Subway Agent (uncredited)
- Bennie Moore Richter's Subway Agent (uncredited)
- Terry Richards Henchman at Cementfactory (uncredited)