From the Metal Gear game series. Cosplayer is Mr. JoshBox.
A fictional character and the main protagonist of Konami's Metal Gear series created by Hideo Kojima. The Metal Gear Solid games has the character voiced by Akio Ōtsuka in the Japanese version and by actor and screenwriter David Hayter in the English version.
Solid Snake is a former Green Beret and a highly skilled special operations soldier engaged in solo stealth and espionage missions. Snake was often tasked with destroying models of the bipedal nuclear weapon-armed mecha known as Metal Gear. Controlled by the player, he must act alone, supported via radio by commanding officers and specialists. While his first appearances in the original Metal Gear games were references to Hollywood films, the Metal Gear Solid series has given a consistent design by artist Yoji Shinkawa alongside an established personality. The character has been well received by critics. (Wikipedia)