Bela Lugosi

Character: Dr. Alex Zorka / Dr. Zane

Robert Kent

Character: Capt. Bob West

Dorothy Arnold

Character: Jean Drew

Edwin Stanley

Character: Dr. Fred Mallory

Regis Toomey

Character: Lt. Jim Daly

Jack C. Smith

Character: Monk

Edward Van Sloan

Character: Jarvis

Dora Clement

Character: Ann Zorka

Anthony Averill

Character: Rankin

Hugh Huntley

Character: Perkins

Monte Vandergrift

Character: Al

Frank Mayo

Character: Train Engineer

Jim Farley

Character: Skipper

Eddie Acuff

Character: Mac

Reed Howes

Character: Signalman

Ed Wolff

Character: The Robot

Hooper Atchley

Character: Experimental Lab Tech

Roy Barcroft

Character: AMI Agent Parker

Robert Blair

Character: Smith

Al Bridge

Character: White Rose Sailor

Don Brodie

Character: Thug

Lane Chandler

Character: Henchman with Rankin

Edmund Cobb

Character: Army Sergeant

Lee J. Cobb

Character: Road Crew Foreman (archive footage)

Eddie Dunn

Character: Policeman

Jerry Frank

Character: Henchman with Rankin

Karl Hackett

Character: Brown

Charles King

Character: Cop

George Magrill

Character: Thug-Pilot / Schooner Crewman

Monte Montague

Character: Airplane Mechanic

Pat O'Malley

Character: AMI Chief

David Sharpe

Character: Schooner Sailor

Tom Steele

Character: Train Conductor / Radio Truck Driver

Forrest Taylor

Character: Black

Harry Wilson

Character: Schooner Crewman