This article compares the surprisingly similar personalities and political trajectories of Adolf Hitler and Fidel Castro in order to define a specific, ‘revolutionary totalitarian’ type of personality. This is a union of authoritarian personality, revolutionary tendencies, and genuine charisma. Moreover, it can develop only in a modern context allowing the creation of an effective personality cult. Politically, its outcome is a revolutionary transformation of state and society leading to the establishment of a new system of values paralleled by the imposition of a new, totalitarian order. Ironically, the consolidation of the new regime leads to the complete dissolution of the leader’s revolutionary tendency, which is preserved only in foreign policy. There, however, it can lead to extremely serious military consequences.