The Hideous Sun Demon

Robert Clarke

Dr. Gilbert McKenna

Patricia Manning

Ann Russell

Nan Peterson

Trudy Osborne

Patrick Whyte

Dr. Frederick Buckell

Fred La Porta

Dr. Jacob Hoffman

Peter Similuk

George Messorio

William White

Police Lt. Peterson (as Bill Hampton)

Robert Garry

Dr. Stern

Donna King

Suzy's Mother

Xandra Conkling

Suzy

Del Courtney

Radio Deejay

Ron Honthaner

Policeman in Warehouse