This is martial artist Pek Pongpaet, who along with his friends Don, Taylor and Yusuf performed the motion-capture for the latest Mortal Kombat trailer. So if you thought that was all just computers and make-believe characters, nunh unh.
https://lastchance.cc/mortal-kombats-shang-tsungs-got-soul-unfortunately-its-5792424%3C/a%3E%3C/p%3E
Less awesome, but slightly more amusing, is around the 5:06 mark in the video to the left, where Pongpaet re-enacts some Soulcalibur moves at the expense of an office lightbulb.