6 current WWE Superstars with an MMA background

#2 Brock Lesnar

The Beast is a former UFC Champion

Despite having only competed in 9 matches with a win/loss/no contest record of 5-3-1, Brock Lesnar was one of the biggest box offices draws during his time in UFC. The Beast had taken part in many of the PPV events that sold a huge amount of tickets in UFC's history, which makes him a huge deal in the world of MMA.

But most importantly, Lesnar is a former UFC Heavyweight Champion as he had successfully defended the belt twice. Unfortunately for Lesnar, his successful UFC career has also been shrouded in controversy as he had tested positive twice for the estrogen blocker clomiphene on August 23rd, 2016, which was confirmed by the Nevada State Athletic Commission.

Despite Lesnar's past suspension, there is still a huge possibility that he will return to the UFC as Lesnar invaded the cage at UFC 226 after the main event by challenging UFC World Heavyweight Champion in Daniel Cormier.

It has also been confirmed by the USADA that Lesnar is currently beginning the process of getting back into their pool of drug-testing. With Lesnar also being a current WWE Universal Champion, he has clearly dominated not just the MMA world, but the wrestling world as well.