Iron Mike Tyson was the youngest heavy weight champion ever at 20 years old.
Ali beat sonny liston in 1964 to become the heavy weight champion.
Randy Orton was the youngest World Heavyweight Champion
the legend killer randy orton
Ric Flair became World Heavyweight Champion when he pinned the former champion in a title match.
The last cruiser-weight champion was hornswoggle but he gave it up so nobody is the cruiser-weight champion
if you mean is he world heavy weight champion the yes. but if you say in he the heaviest world heavyweight champion then no because yokozuna was