04- Jack Johnson
He had a boxing era from 1897 to 1945 he was the first American heavy weight champion before Roy Jones and Mohammad Ali. He was unbeatable for more than 10 years and he used to humiliate the opponents by not letting them knock out so that he can continuously beat them in the ring. The presses used to abuse and discredit him but he still was unbeaten. For more than 10 years, he was the most hated and the most famous African American on the earth. He had a record of 73 wins out of which 40 were knockout wins and lost 13 matches.