In this article, I investigate the sociocultural grounding and sociopolitical position of Randy Borman, the “gringo chief” of the indigenous Cofán people of Amazonian Ecuador. Born to North American missionary-linguists, Borman grew up in Cofán communities, attended school in urban Ecuador and the United States, and developed into the most important Cofán activist on the global stage. I consider him alongside other ethnically ambiguous leaders of Amazonian political movements, whom anthropologists have described as “messianic” figures. The historians and ethnographers who write about Amazonian messianism debate the relationship between myth and reason in indigenous political action. Using their discussion as a starting point, I propose the concept of “mythical politics,” a type of transformative action that concentrates enabling forms of socio-temporal mediation in the shape of individual actors and instantaneous events. I develop my approach through a discussion of the work of Georges Sorel, Georg Lukács, and Antonio Gramsci, three theorists who debate the role of myth in political mobilization. By applying their insights to the case of Borman, I explore the relationship between myth, mediation, and rationality in Cofán politics and political movements more generally.