Biography: Joaquín Archivaldo Guzmán Loera (born April 4, 1957), commonly known as "El Chapo", is a Mexican former drug lord and the former top leader of the Sinaloa Cartel. Guzmán is believed to be responsible for the deaths of over 34,000 people, and was considered to be the most powerful drug trafficker in the world until he was extradited to the United States and sentenced to life in prison.