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
Candace Silvers
Irene
Beau Dremann
Matusky
Pat Simmons
Crystal
John Vidor
Jock #1
Vincent Barbour
Jock #2
Jaime Alba
Jock #3
Robert Beer
President Eisenhower
John Carter
General
Cameron Young
General's Aide
Noel Conlon
Secret Service Man
Jackson Bostwick
Sentry
Robert DoQui
Desk Sergeant
Elven Havard
Fireman
Linda Hoy
Librarian
Robin Allyn
Ellie's Friend
Michael Berryman
Mutant #1
Chuck Hemingway
Coy
Pamela Springsteen
Hall Monitor Ellie's Friend
Matt Hoelscher
Preppie
Jack O'Leary
Sentry at Air Force Guardhouse
Clare Peck
Policewoman
Joel Harrison
Wino
Ann Culotta
Trucker's Wife
Hank Calia
Neanderthal Man
Scott Bailey Spangler
Guard #2 at Air Force Guardhouse
Frank Welker
Alien (voice)
Dawna Lee Heising
Sorceress (uncredited)
Al Leong
Vietnamese Soldier (uncredited)
Gerald Okamura
Vietnamese Soldier (uncredited)