Barnes enlisted in the Army before the devastating events of September 11, 2001. At the time of the attacks, he was deep into the rigorous training of Ranger School, where he was honing his skills and preparing for the demands of elite military service. Successfully completing Ranger School, Barnes transitioned to the esteemed 75th Ranger Regiment, known for its quick-response capabilities and precision in combat.
When Stalker was assembling his elite team, Barnes was at the top of the list. He was recognized for his proven leadership and cool head in combat. Now serving as Stalker's right-hand man and top sergeant, Barnes guides the team as they confront formidable foes, including the nefarious Cobra organization and the increasing threat of the undead.