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 . This made Tyson the first heavyweight boxer to simultaneously hold the WBA , WBC and IBF titles , and the only heavyweight to successively unify them . 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 . World Boxing Association . The WBA awards the WBA world championship title at the professional level .