Who is the renowned boxer known for being a world champion in four different weight classes, from middleweight to heavyweight?

Roy Jones Jr.

Roy Jones Jr., considered one of the most talented boxers of all time, accomplished the incredible feat of becoming world champion in four different weight classes, a journey that took him from middleweight to heavyweight. His ability to compete and dominate across such a variety of weight classes underscores his extraordinary versatility and natural talent. Jones Jr. is famous for his spectacular fighting style, combining speed, power, and a nearly impenetrable defense, often leaving his opponents baffled and unable to touch him. His legacy is that of a pioneer, having set a standard of excellence and versatility that few boxers have been able to match since.