Roddy Piper as John Nada

Keith David as Frank Armitage

Meg Foster as Holly Thompsen

George Buck Flower as Drifter

Peter Jason as Gilbert

Raymond St. Jacques as Street Preacher

Jason Robards III as Family Man

John Lawrence as Bearded Man

Susan Barnes as Brown Haired Woman

Sy Richardson as Black Revolutionary

Wendy Brainard as Family Man's Daughter

Lucille Meredith as Female Interviewer

Susan Blanchard as Ingenue

Norman Alden as Foreman

Dana Bratton as Black Junkie

John F. Goff as Well Dressed Customer

Norman D. Wilson as Vendor

Thelma Lee as Rich Lady

Stratton Leopold as Depressed Human

Rezza Shan as Arab Clerk

Norman Howell as Blonde Haired Cop

Larry Franco as Neighbor

Tom Searle as Biker

Robert Grasmere as Scruffy Blonde Man

Vince Inneo as Passageway Guard

Bob Hudson as Passageway Guard #2

Jon Paul Jones as Manager

Dennis Michael as Male News Anchor

Nancy Gee as Female News Anchor

Claudia Stanlee as Young Female Executive

Christine Anne Baur as Woman on Phone

Eileen Wesson as Pregnant Secretary

Gregory J. Barnett as Security Guard #1

Jim Nickerson as Security Guard #2

Kerry Rossall as 2nd Unit Guard

Cibby Danyla as Naked Lady

Jeff Imada as Male Ghoul

Michelle Costello as Female Ghoul

Jeb Stuart Adams as Homeless kid (uncredited)

Jennifer Austin as Teenage Girl (uncredited)

Michael Forino as Ghoul at Bar (uncredited)

Robert V. Greene as TV Technician (uncredited)

Helen Kelly as Woman at the Dinner Party (uncredited)

Al Leong as Asian Revolutionary (uncredited)

Gunnar Magg as Male Ghoulie (uncredited)

Matt McColm as Police Officer (uncredited)

Tommy Morrison as Dave - Resistance Fighter (uncredited)

John Carpenter as Voice That Says 'Sleep' (voice) (uncredited)