Colonel Vargas grew up in Las Almas alongside his second in command, Sergeant Major Rodolfo Parra. Eventually Vargas was promoted to Colonel and became the commanding officer of Los Vaqueros, a special forces unit composed solely of non corrupt operators who grew up in Los Almas. At an unknown point, presumably after Valeria's Betrayal, he would make contact with Kate Laswell and began cooperating with her, even progressing as far as to reach a "first name basis" of mutual trust.