Gustavo González Castro (born 1 July 1973), commonly referred to by his alias "El Erótico" ("The Erotic One"), is a suspected Mexican drug lord and founding member of Los Zetas, a criminal organization originally formed by ex-commandos from the Mexican Armed Forces. He joined the Mexican Army as an infantry soldier in 1990, and ascended to the corporal unit five years later. By 1999, however, González Castro had resigned and began working for the Gulf Cartel and Los Zetas along with several former military men.