Ernesto Fonseca Carrillo, better known as “Don Neto,” is a notorious Mexican criminal and drug dealer. He is a former leader of the infamous Guadalajara Cartel, a powerful criminal group of the 1980s. Along with Miguel Ángel Félix Gallardo (“The Godfather”) and Rafael Caro Quintero, he contributed to the growth of the hallucinogen market in the U.S., Mexico, and Colombia. Cocaine and cannabis were the most trafficked drugs under their reign. Under Fonseca’s leadership, the cartel was also involved in money laundering, extortion, and arms trafficking. The elusive drug dealer was arrested by the Drug Enforcement Administration (DEA) in 1985. Multiple charges were brought against him at the time of his conviction. Despite living a dangerous life, the octogenarian criminal has managed to outlive most of his contemporaries and associates. Apart from the Guadalajara Cartel, Fonseca was also associated with other infamous groups, such as the Sinaloa Cartel, the Juárez Cartel, the Tijuana Cartel, and the Gulf Cartel.