He's got the eye patch over his right eye. That means he's Big Boss. But he's smoking a cig. That means he's Solid Snake. Two in one Snake art!
Metal Gear Solid: Skin Shedder [Infographic] - Halloween Costumes Blog
Big Boss fixing Solid Snake's bandana
MGS5 The Phantom Pain Art - Yoji Shinkawa
“Quiet, a sniper deprived of her words."