"Roger that Oxide, I'll send Vinson and Lambert. Butcher Seven out."
— Butcher Seven
Lambert was a member of Shadow Company, a squad member of Butcher Seven. He was sent along with Vinson to investigate the loss of contact with Disciple Five. While he is never directly identified he is most likely one of the Shadow Company soldiers seen leaving the cave in the beginning of the level after the player enters the cave, meaning that his weapon is either a SCAR-H or an ACR. His fate is never mentioned.