venom snake
The main protagonist of Metal Gear Solid V: The Phantom Pain.
He is actually an MSF medic who has been given plastic surgery and hypnotherapy to serve as a doppelganger for Big Boss. He is also the actual Big Boss that Solid Snake defeats in the first Metal Gear game.
His English voice actor is Kiefer Sutherland and his Japanese voice actor is Ootsuka Akio.