Jack Dempsey
William Harrison 'Jack' Dempsey, 'The Manassa Mauler', was an explosive American heavyweight boxing champion who became one of the greatest cultural icons of the Roaring Twenties. Renowned for his ferocious aggression, bobbing-and-weaving 'Dempsey Roll', and devastating punching power, he drew boxing's first million-dollar gates and reigned as world champion from 1919 to 1926.