メキシコ軍
Rogelio González Pizaña (1 March 1974 – 6 December 2015), commonly referred to by his alias Z-2 and/or El Kelín, was a Mexican former drug lord and one of the founders of Los Zetas, a criminal organization originally formed by ex-commandos from the Mexican Armed Forces. Unlike the rest of the founders of Los Zetas, however, he did not serve in the Mexican Armed Forces before joining the drug trade.