His real name is Charlie Iron-Knife, and he was born to a poor Native American family in the Taos Pueblo Reservation in Taos, New Mexico. He was a hunting guide through high school, and then served in Southeast Asia after joining the military. Spirit returned to civilian life to complete his education, and then inexplicably returned to the service. His primary specialty is as a tracker, and he is a qualified expert with the M-16, M1911A1 Auto Pistol, and the Remington sniper rifle.