Rambo (August 8, 1951 – January 6, 1994) was a Colombian drug lord and paramilitary who was among the founders of Los Pepes and the Peasant Self-Defense Forces of Cordoba and Uraba (ACCU), a paramilitary group which ultimately became a member of the larger United Self-Defense Forces of Colombia (AUC) from which he became its leader until his death in 1994.
"Monoleche" - chief lieutenant of the Castaño brothers - delivered to the prosecutor of the Republic of Colombia the necessary information to locate the whereabouts of the remains in a mass grave in an estate of the municipality of San Pedro de Urabá in Antioquia.
[3][4][5] It was revealed that in 1990 Carlos Castaño was still accompanying his brother Fidel, who at that time was leading the self-defense group funded by peasants from Cordoba (ACCU), and whose goal was to take out the Popular Liberation Army.
Castaño's self-defense forces demobilized in 1992 and retook weapons in 1993 due to a raid by the FARC in Urabá Antioquia after the peace dialogues with that guerrilla in Mexico failed.
One version states that he died while fighting with the then recently created FARC's front 58 in the pathway connecting San Pedro of Uraba and Santa Catalina on January 6, 1994.