John Stockwell

Michael Harlan

Danielle von Zerneck

Ellie Sawyer

Fisher Stevens

Vince Latello

Raphael Sbarge

Sherman

Richard Masur

Detective Isadore Nulty

Barry Corbin

Lew Harlan

Ann Wedgeworth

Dolores

Dennis Hopper

Bob Roberts

Beau Dremann

Matusky

John Carter

General

Jackson Bostwick

Sentry

Robert DoQui

Desk Sergeant

Michael Berryman

Mutant #1

Pamela Springsteen

Hall Monitor Ellie's Friend

Frank Welker

Alien (voice)

Dawna Lee Heising

Sorceress (uncredited)

Al Leong

Vietnamese Soldier (uncredited)

Gerald Okamura

Vietnamese Soldier (uncredited)