Led by Mexican Martin Madrazo and his family, the gang muscle is mainly made up of young Hispanic men of Guatemalan origin. Gang muscle are seen wearing distinctive Flying Bravo polo shirts of varying colors and designs, usually with numbers on the sleeves. Internal character models are named "Pologoon" reflecting their common wardrobe. Higher up members of the gang do not wear these shirts and sometimes use the same models as the Vagos and the Armenian Mob. Like the Aztecas, many of the cartel members re-use the Vagos members dialogue.
The cartel members at La Fuente Blanca will not be immediately hostile to the player unless the player stays in their vicinity too long. Verbal warnings will be given before any aggressive response is encountered.
Events in Grand Theft Auto Online
"Mr. Madrazo... Mr. Madrazo is a legitimate businessman. He was wrongfully accused of... running a Mexican-American gang and a narcotic ring, but the charges were dropped because of the witnesses came up... missing."
Even thought The Cartel is allied with the online player, they can also be one of the gangs who the players target to steal raw materials for their business in the Bikers, Gunrunning and Smuggler's Run resupply missions. They can also appear in the Nightclub promotion missions, added with the Arena War update, where they chase the player once stolen supplies are retaken from the Vagos.
Their first appearance as a gang is during Marriage Counseling, one of Michael De Santa's missions, where they attempt to kill Michael after he pulled down the deck of a property which Martin Madrazo had an interest in. The hitmen chase Michael and Franklin Clinton to Michael's Rockford Hillsmansion. The gang's leader, Martin, appears and after Franklin informs Michael of Madrazo's background, referencing the earlier legal troubles of GTA Online, Martin beats Michael down with a baseball bat and tells him that he owes him $2.5 million for the destroyed house. After Michael returns to the criminal life to pay his debt off, Martin contacts Michael asking him for a favor, to kill Martin's cousin Javier Madrazo after he had been planning to testify against the gang. After Michael shoots down the plane that was carrying Javier and Trevor Philips manages to kill Javier as well as collect the evidence, Martin refuses to pay the two for the work. Because of this, Trevor bites off Martin's ear, kidnaps his wife Patricia Madrazo and steals his car. Because of this, Martin orders the gang to attack both Michael and Trevor if they enter La Fuente Blanca or Los Santos city limits in endless waves until they exit the ranch or city. The Madrazo Cartel are again reconciled when Michael sends him an Aztec fertility idol that he stole from a train and Trevor tearfully returns Martin's wife to him at the end of Monkey Business.
La Fuente Blanca, a ranch owned by Martin Madrazo, serves as the Madrazo Cartel's main area of operation. Cartel members can be seen standing guard or patrolling the ranch. Martin also owns a house in Vinewood Hills, which appears in many online missions and a rural lock-up north of La Fuente Blanca.
↑Dialog has members referring to each other using the slang word "Chapine" which is slang for a person from Guatemala. They can also be heard saying "Viva Guatemala". Slang also references the gang as being called the "Guatemaltecos"