El Jefe is the shadowy figure at the head of one of the Tijuana factions of the notorious El Sindicato del Norte (The Northern Syndicate), which controls most criminal activity across Baja California and Sonora, Mexico. His actual name, place of residence and even his appearance are unknown to most, including law enforcement on both sides of the border. It should be noted that El Jefe is not the supreme leader of the Syndicate. Rather, he is only one of several faction bosses who work together in an uneasy coalition.