http://www.mmafighting.com/2014/12/23/7438867/bellator-in-talks-with-former-wwe-star-alberto-del-rio Del Rio, aka Alberto Jose Rodriguez, aka Dos Caras, Jr., competed part-time in MMA from 2002 to 2010 amassing a 9-5 record with seven submission wins. His most famous fight was against Cro Cop at Bushido 1 where, as a masked fighter, he was knocked out in the first minute of the first round via head kick and punches. The 37-year old would likely compete at light heavyweight. ADR was fired from the WWE in August after striking a WWE web producer who had made a racist remark. If only ADR had been the masked man in the Bonnar/Ortiz feud!
ADR vs. Bobby Lashley or Herschel Walker would be pretty fun. Dude is 37-years old with a lot of miles on him so why not just set up fun fights?