In professional wrestling, Severn is a two-time world champion by winning the NWA World's Heavyweight Championship twice, with his first reign lasting for over four years, and an NWA Hall of Fame member. During his almost year-long tenure with the World Wrestling Federation, he was managed by Jim Cornette and was perhaps most famous for making his entrance with the numerous UFC and NWA championships he had accumulated. He is the first man to compete in UFC and WWF at the same time and held the NWA and UFC championships at the same time. Severn is a world record holder for holding 13 championships. He is also the only person to be honored by the George Tragos/Lou Thesz Professional Wrestling Hall of Fame three times.