#5 Drew Gulak
Drew Gulak may not be seen as a serious option on this list, but he makes it purely down on merit as he is a pretty fierce guy. The 29-year-old was formerly a member of the CZW roster and if you've heard of that promotion before, it's because they are famous for their death match wrestling.
That may not be seen as much of an accomplishment, but if Gulak can withstand that then he can withstand pretty much anything thrown at him.
Get the latest updates on One Championship Rankings at Sportskeeda and more
He has got a determined mentality and is young enough to make a strong run in the world of MMA, in addition to being versatile enough within the sport. Gulak’s wrestling arsenal includes various submission moves, and if he can get guys down to the ground and start tightening those holds then nothing is impossible.