A mad scientist named Dr. Satan plots to steal key pieces of technology to enable him to build an army of robots based on his prototype to conquer America. The only one standing in his way is Bob Wayne, who fights Satan as the enigmatic Copperhead. Mysterious Doctor Satan is a 1940 film serial named after its chief villain. Doctor Satan's main opponent is the masked mystery man, "The Copperhead", whose secret identity is Bob Wayne, a man searching for justice and revenge on Satan for the death of his step-father. The serial charts the conflict between the two as Bob Wayne pursues Doctor Satan, while the latter completes his plans for world domination.
as Doctor Satan
as Bob Wayne / Copperhead
as Speed Martin
as Prof. Thomas Scott
as Lois Scott
as Alice Brent
as Gov. Bronson
as Police Chief Rand
as Col. Bevans
as Stoner
as Gort
as Hallett
as Corbay
as Ross
as Scarlett
as Corwin
as Joe
as Henchman-Driver Spike
as Gray, Pick-up Thug
as Panamint Pete
as Co-Pilot
as Sailor at Winch
as Nurse
as Barton
as Police Lieutenant
as Wells - Governor's Secretary
as Station Master Burns
as Officer
as Gas Station Attendant
as Plant Henchman
as Al
as Roper
as Duke - Mine Thug
as Red - Mine Thug
as Capt. Lathrop
as Proprietor
as House Heavy
as Plant Henchman
as Steve - Pilot
as Henchman Fallon
as House Heavy
as Chuck - Lead Truck Thug
as P&G Warehouse Mgr.
as Henchman-Guard
as Jake - Biplane Pilot
as Detective Brock
as Warehouse Watchman
as Truck Henchman
as Police Officer Davis
as Watkins - Fire Escape Thug
as Detective Perry
as Palmer - Thug
as Prof. Williams
as Truck Henchman
as Sailor at Cable
