In 2008, he founded Los Ántrax with another drug lord known as René Velázquez Valenzuela (alias Sergeant "Phoenix Ántrax", "El Gato Negro" (Black cat) and "El Taliban" ), who was arrested by the Mexican Army that year and sent to jail in Aguaruto, Sinaloa. Among the first gang leaders to die was Redel Castro (alias "El Pocho Ántrax"), who was killed in a massive shootout in June 2010 with rival members of the Beltrán Leyva Cartel in Tubutama, Sonora. In May 2011, the Mexican Army arrested, tortured, and killed three members of Los Ántrax after they mistook them for kidnappers: the members were Franklin Olguín Velázquez (alias "El Franki" and/or "El Dos"), Jesús Humberto Corona Guillén (alias "El Chuve"), and Pedro Valenzuela Meza (alias "El Pedrón"). In November of that year, Francisco Arce Rubio (alias "Pancho Arce"), another high-ranking gang leader close to El Chino Ántrax, was killed during an indoor soccer game in Culiacán by rival gangsters of Los Mazatlecos. Following the death of Arce Rubio, "El Mayo" Zambada withdrew El Chino Ántrax from the day-to-day activities of Los Ántrax until he sorted things out. However, the attacks against the gang continued; in February 2012, Roque Landeros (alias "Roque Ántrax") was killed with three other men in Culiacán. Local media outlets alleged that the killings stemmed from an internal power struggle within the Sinaloa Cartel, specifically from a group commanded by "El Chapo" Guzmán. Mexico's Office of the General Prosecutor (PGR) and Secretariat of Public Security (SSP) have identified various other leaders under the hierarchy of El Chino Ántrax. Jesús Peña (alias "El 20") is believed to be a close associate of the drug lord; others include a man known as Melesio (alias "El Mele"); "El Traka Ántrax", identified by authorities as the gang's recruiter; Eusebio Imperial or Eliseo Castro (alias "El Cheyo Ántrax"), a supposed nephew of "El Mayo" Zambada; a man known as "El Monkey"; and "El Changuito", the former alleged financial head of Los Ántrax, both arrested on 16 April 2012.