Malcolm Waite

as Jack Cameron

as Big Strength Machine Contestant (uncredited)

as (uncredited)

as Sea Captain

as The Balkan Prisoner / Shem

as Miner (uncredited)

as Juryman

as Big Boyle

as Higgins the Butler

as Carter

as Ted Grant

as Captain of Guards

as Bergerin

as Murphy

as Prof. Saenger

as Blanco Johnson

as Donald Duffield - Harry's Rival

as Jamison - the smelter

as Fireman

as Cocky