Billy "The Kid" (January 13, 1990 – 2012) was a member of the Expendables, serving as one of the team's sharpshooting snipers alongside Gunnar Jensen. He gained combat experience in the United States Army. His Signature Weapon of Choice was the Barrett M107 sniper rifle.
He fell in love with a French woman named Sophia, Billy wanted to leave the team, but was killed by Jean Vilain during a mission with them in what would have been his last month on the team.
The team then honored Billy's loss by tracking Vilain and finding him, to put a stop to his plot and avenge their fallen ally. Barney Ross (who he looked up to as a father figure) personally engaged Vilain in hand-to-hand combat and defeated him, killing him.