Miguel Ángel Treviño Morales (born 18 November 1970), commonly referred to by his alias Z-40, is a former Mexican drug lord and leader of the criminal organization known as Los Zetas.
 Considered a violent and dangerous criminal, he was one of Mexico's most-wanted drug lords until his arrest in July 2013.
José Treviño Morales is a Mexican former money launderer for Los Zetas, a Mexican criminal organization.
 He is the brother of the former Zetas leaders Omar Treviño Morales (alias "Z-42") and Miguel Treviño Morales (alias "Z-40").
 In 2008, Treviño funded a horserace operation in Oklahoma with money he made through money laundering.
 Nonetheless, he was arrested by the FBI along with seven others in a horse-breeding ranch in Lexington, Oklahoma on 12 June 2012.
 He was found guilty of money laundering on May 2013, and was sentenced to 20 years in prison by a U.S. federal court in September of that same year.
Óscar Omar Treviño Morales (born January 26, 1974) is a convicted Mexican drug lord and former leader of Los Zetas, a criminal organization.
 He was one of Mexico's most-wanted drug lords.
 His brother is Miguel Treviño Morales, a former leader of the group.
 The authorities believe he was the successor of his brother, who was arrested on July 15, 2013.

Question: Who is Z-40's brother?
Answer: Omar Treviño Morales