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 V smartphone wallpaper by De-monVarela on DeviantArt
War Has Changed - Metal Gear Solid Series by NCCreations
Metal Gear Solid Iron Patches XOF Diamond Dogs by ZanzibarLand
Metal Gear Solid Phantom Pain V: Big Boss
Big Boss - MGSV:TPP
Raiden|Metal Gear Rising|Metal Gear Solid
Metal Gear Solid 3 - Guillaume Morellec
Solid Snake (voiced by David Hayter), the definition of cool. Metal Gear Solid changed our lives forever in 1998.