Short answers, pulled from the story.
Hideo Kojima created the fictional character Revolver Ocelot in the Metal Gear series. The character serves as the main antagonist of Konami's Metal Gear series and is known for his complex role as a central villain.
Revolver Ocelot was first introduced in the video game Metal Gear Solid. He appears as a gunslinger-themed member of the FOXHOUND terrorists involved with the hostile revolt on Shadow Moses Island.
Hideo Kojima designed Revolver Ocelot to have Western tones based on the appearance of veteran Western film actor Lee Van Cleef. The character wears a duster, spurs, and gunbelts as traditional garb of gunslingers in spaghetti westerns.
Revolver Ocelot lost his right hand from an encounter with the Cyborg Ninja during his first boss-encounter with Solid Snake. He later appears to torture Snake after Snake is captured despite his loss.
Troy Baker voiced Revolver Ocelot in the English version of Metal Gear Solid V The Phantom Pain. Satoshi Mikami dubbed the character's voice for the Japanese version of the same game.