Mike Tyson is a heavyweight champion boxer.
Mike Tyson . He reigned as the undisputed world heavyweight champion and holds the record as the youngest boxer to win a heavyweight title at 20 years , 4 months and 22 days old . Nicknamed `` Iron , '' and `` Kid Dynamite '' in his early career , and later known as `` The Baddest Man on the Planet , '' Tyson is considered one of the best heavyweights of all time . The World Boxing Association ( WBA ) is the oldest and one of four major organizations which sanction world championship boxing bouts , alongside the IBF , WBC and WBO .