as Radioman (uncredited)
as Jeff Clark
as Andromus
as Stephen Foster Moody
as Mayor Munro
as Dr. Paul Keller
as Kelly
as Deputy Police Chief
as Charlie
as Dr. Helmut van Bohlen
as Firecat
as Self
as Jeff
as Marcus McAllister
as Narrator
as Jeff Clark / Peter Bradford
as Karl Bjorstrand
as David Mitchell
as Walt Tompkins
as Travis Buckman
as Dr. Paul Taggart
as Jack Corbin
as George Beaumont (segment "You Can Come Up Now, Mrs. Millikan")
as Mike
as Danny Bilson
as Hannibal Heyes (alias Joshua Smith)
as Claude Millgren
as Max Kendrick
