I was a successful boxer. I fought above Welterweight. I was not born in the USA. I never fought in the UK or USA until a decade after my pro debut. I faced 7 undefeated fighters in my career, beating 4 of them. I faced one of the greatest fighters of all time (top 30 easily IMO). Who am I?
Well, one man who could fit this profile (depending on whether or not you regard Emile Griffith an all time top-30) is Carlos Monzon.
If George Foreman was in DBZ he'd well be Piccolo. Or Brolly or some ****. Joe Frazier is defo Vegeta.