#9 Brock Lesnar
Possibly the most famous wrestler to 'make it' in the world of Mixed Martial Arts, Brock Lesnar is the Superstar who has made sure to have the best of both worlds. Officially, Lesnar has announced that he has retired from MMA, and in that time, he has been able to step into the ring to become a WWE Champion as well as the cage to be a UFC Champion.
Lesnar started his career in WWE after a successful run as an amateur wrestler. He became one of the top Superstars in the company almost immediately, beating some of the top talents on the roster at that time. He beat The Rock as well as The Undertaker soon. After a very successful run in WWE, he would leave to pursue a career in professional football.
Charlotte Flair to return and wrestle a CURRENT CHAMPION?
That run was not too successful and that's when he entered the cage. Following an initial setback when he was beaten by Frank Mir, Lesnar went on to become the UFC Heavyweight Champion and defended it multiple times before finally losing to Cain Velasquez.
He has since returned to WWE, where he has been successful once again, winning both the WWE Championship and the WWE Universal title multiple times.
Record: 5-3