Mario Armando Ramírez Treviño (born 5 March 1962), commonly referred to by his aliases El Pelón and/or X-20, is a Mexican suspected drug lord and former leader of the Gulf Cartel, a drug trafficking organization.
Mario Armando Ramírez Treviño (nacido el 5 de marzo de 1962), también conocido por sus aliases «El Pelón» y/o «X20», es un supuesto narcotraficante y exlíder del Cártel del Golfo, una organización criminal mexicana. (es)
Mario Armando Ramírez Treviño (born 5 March 1962), commonly referred to by his aliases El Pelón and/or X-20, is a Mexican suspected drug lord and former leader of the Gulf Cartel, a drug trafficking organization. (en)