Los Ninis ('the NEETs') are the main armed wing of the faction of the Sinaloa Cartel known as Los Chapitos. Made up of loyal young hit men between the ages of 20 and 35, well-trained in urban combat operations, they operate as a security force for the leaders of that faction, as well as to torture and kill anyone who opposed Los Chapitos. They are also given tasks such as monitoring and taking care of drug laboratories, cartel camps and drug trafficking routes. This armed wing would be under the orders of one individual identified as Néstor Isidro Pérez Salas, (alias "El Nini", "El General", "El 19" or "Chicken Little"), who has training and knowledge in the military field. The group is also made up of other high commands such as Jorge Humberto Figueroa Benitez (alias "El 27"), coordinator of El Nini's operations regarding the manufacture and trafficking of fentanyl, and Oscar Noé Medina González (alias "El Panu"), who was in charge of supervizing the security of the cartel's strategic points and coordinating the jefes de plaza until he was killed on 21 December 2025. This group is also held responsible for unleashing an internal war between factions of the Sinaloa Cartel to impose the dominance of Los Chapitos. Its main center of operation is located in the city of Culiacán, Sinaloa.