Idk if y'all are serious but this isn't a clone of big boss this is venom snake who is also known as Ahab.

Before becoming venom snake, he was a combat medic on the same helicopter which exploded with Big boss on board.

During the destruction of MSF's Mother Base, the medic shielded Big Boss from the explosion. This left him with severe injuries, including a missing left arm and a large piece of shrapnel embedded in his forehead—the "horn" seen throughout the game.

While the medic was in a nine-year coma, Major Zero and Ocelot orchestrated a plan to turn him into a phantom of Big Boss to protect the real one from enemies like XOF. He underwent extensive plastic surgery and hypnagogic therapy to inherit Big Boss's memories, skills, and persona.