Mario Cárdenas Guillén is the brother of the Mexican drug lord who was the former leader of what group?
Mario Cárdenas Guillén Mario Alberto Cárdenas Guillén is a former leader of the Mexican criminal group called the Gulf Cartel. He is the brother of Osiel Cárdenas Guillén and Antonio Cárdenas Guillén.
Ismael Zambada García Ismael Zambada García (born 1 January 1948), also known as El Mayo Zambada, is a Mexican drug lord who serves as the leader of the Sinaloa Cartel. Before assuming leadership of the entire cartel, he served as the logistical coordinator for the Zambada-García faction of the Sinaloa Cartel which has assisted in the exporting of cocaine and heroin into Chicago and other U.S. cities by train, ship, jet and submarine.