(*ME, talking off camera) Am i supposed to give a SPOILER ALERT warning? What for? Oh, alright...
If for some reason you've been living in a cave for a decade then you would have no idea who this guy is. Either you're a doomsday conspiracy enthusiast who went underground for fear of a nuclear winter back in the 90's or you're a bat - whichever one, it doesn't explain why you have internet access, but anyway... Metal Gear Solid fans caught the scent the moment this bad-a$$ MF made his presence known in the trailer...
This mysterious adversary has been chasing Medic Snake (Oooops! too late, Spoiler!) relentlessly in the game like a much more flame and steroid-laden Nemesis and/or Tyrant though he's definitely much harder to bring down, well, unless of course you're living near a steady water source... something missing in the jungles of Africa during that mission wherein he'll screw up with your Gunship if you're gonna be too sissy to neutralize him first before attempting to board. And oh yeah, we tried sending him to Mother Base via that cool balloon...