#1 - The Undertaker
The Undertaker is perhaps one of the biggest wrestling-based MMA fans in the world. The guy has always loved the sport as he has alluded to on more than one occasion, and his act of wearing MMA gloves during his matches grabbed a lot of headlines. His fighting style in the squared circle echoes the work of several fighters too, so it should be no surprise to see him at the top of this list.
As many people know Taker has even shown up at a couple UFC events in the past, including the time when Brock Lesnar lost his UFC Heavyweight Championship to Cain Velasquez. The staredown between the two men went viral and they eventually did square off at WrestleMania 30, but how would things have gone if both men had been in MMA from the start?