Michael 'Mike' Harlan

John Stockwell

Bob Roberts

Dennis Hopper

Ellie Sawyer

Danielle von Zerneck

Vince Latello

Fisher Stevens

Sherman

Raphael Sbarge

Detective Isadore Nulty

Richard Masur

Jock #2

Vincent Barbour

Lew Harlan

Barry Corbin

Dolores

Ann Wedgeworth

Jock #3

Jaime Alba

Irene

Candace Silvers

Matusky

Beau Dremann

Crystal

Pat Simmons

Jock No. 1

John Vidor

Vietnamese Soldier (uncredited)

Al Leong

Coy

Chuck Hemingway

Sentry at Air Force Guardhouse

Jack O'Leary

Sentry

Jackson Bostwick

President Eisenhower

Robert Beer

General

John Carter

Hall Monitor, Ellie's Friend

Pamela Springsteen

General's Aide

Cameron Young

Mutant #1

Michael Berryman

Secret Service Agent

Noel Conlon

Desk Sergeant

Robert DoQui

Preppie

Matt Hoelscher

Sorceress (uncredited)

Dawna Lee Heising

Fireman

Elven Havard

Librarian

Linda Hoy

Ellie's Friend

Robin Allyn

Policewoman

Clare Peck

Wino

Joel Harrison

Trucker's Wife

Ann Culotta

Neanderthal Man

Hank Calia

Guard #2 at Air Force Guardhouse

Scott Bailey Spangler

Alien (voice)

Frank Welker

Vietnamese Soldier (uncredited)

Gerald Okamura