I was re-watching the Metal Gear GZ trailer and noticed something interesting.

I was re-watching the Metal Gear GZ trailer and noticed that when the XOF choppers take off at the 6:00 minute mark they leave behind one person. He's crouched in the stereotypical "Metal Gear bad guy" way, and his appearance comes shortly after the burned guy says something about the "Trojan horse" being in. I was wondering if any MGS fans can shed some light on who this could be?