Castillo is a Brussels-based Castilian-Manchegan arts researcher and writer dedicated to collaborating in queer processes for artistic creation. Castillo conducts a multi year experimental and collaborative artistic research project on transfagbidyke assemblies and harm reduction, in partnership with erg arts school in Brussels, in residency at Kaaitheater in Brussels and MACBA in Barcelona, and with the support of the Fonds de la Recherche Scientifique in Belgium. Castillo is part of the Brussels queer arts initiative Buenos Tiempos, Int. since 2014.