Galdino or Galindo Mellado Cruz (18 April 1973 – 9 May 2014), commonly referred to by his alias El Mellado and/or Z-9, was a Mexican suspected drug lord and one of the founders of Los Zetas, a criminal organization originally formed by ex-commandos from the Mexican Armed Forces. He joined the Mexican Army in 1992 and was part of the Grupo Aeromóvil de Fuerzas Especiales (GAFE), an elite special forces unit of the Army. In 1999, he withdrew from the military and was recruited by the Gulf Cartel, a drug trafficking organization, shortly thereafter.