Doctor Satan

Bob Wayne / Copperhead

Speed Martin

Prof. Thomas Scott

Lois Scott

Alice Brent

Gov. Bronson

Police Chief Rand

Col. Bevans

Stoner

Gort

Hallett

Corbay

Ross

Scarlett

Corwin

Joe

Henchman-Driver Spike

Gray, Pick-up Thug

Panamint Pete

Co-Pilot

Sailor at Winch

Nurse

Barton

Police Lieutenant

Wells - Governor's Secretary

Station Master Burns

Officer

Gas Station Attendant

Plant Henchman

Al

Roper

Duke - Mine Thug

Red - Mine Thug

Capt. Lathrop

Proprietor

House Heavy

Plant Henchman

Steve - Pilot

Henchman Fallon

House Heavy

Chuck - Lead Truck Thug

P&G Warehouse Mgr.

Henchman-Guard

Jake - Biplane Pilot

Detective Brock

Warehouse Watchman

Truck Henchman

Police Officer Davis

Watkins - Fire Escape Thug

Detective Perry

Palmer - Thug

Prof. Williams

Truck Henchman

Sailor at Cable