This chapter examines one of the endeavours Latin American music has predominantly engaged in, namely decoloniality, and uses this as a bedrock to examine what we consider to be a pertinent question: What has Latin American metal ever done for the international metal scene? We believe that the answer to this question lies at the juncture of and brings forth a call for ethics in metal music. We propose that decolonial metal music in Latin America incarnates three principles linked to what we term an ethics of affront: (1) acknowledging the humanity of those oppressed by coloniality, (2) acknowledging the reality of the sociopolitical context and (3) fostering activist action as a task for metal music.