Proctor is Special Agent Pendergast's chauffeur, bodyguard, and personal factotum, and one of his most trusted and loyal associates. He has family in Alsace, France, though additional information about his background—even his first name—remain a mystery. During his military service in the army, he set a an endurance course record in OSUT at Ft. Benning that still stands, and eventually served in the Ghost Company under Pendergast.