Modern sex reason has been based on a normal-pathology dichotomy to discern the human being and the monster developed into a bio-political environment. Under this logic, legal, social and medical systems make safety devices and standardization with these monsters. But what would happen if we invested the tables? Rara avis argues the idea of monstrosity -it thinks mainly of transsexuals and intersexuales- as power to demolish the modern sexual reason and their devices: abjection becomes a resistance space.