In this article I look at the imagos and identifications in a young adolescent girl who identifies herself as transgender. Based on the clinical material, I will explore in this young girl the imago of an anal mother which underpins and fixes her mode of functioning. I will put forward the hypothesis that she has incorporated the mother’s hatred towards her own deformed body and hatred of the sexual body, in a fusional and undifferentiated family functioning, an incorporation linked to the imago-based register. A link will be established between this imago-based functioning and trans-identities in relation to the question of the difference between the sexes. I will then go on to show how therapeutic work, inaugurated by an enactment of removing masks during the pandemic opened up a space of transitionality permitting a deconstruction of the imago and the representation of fantasies and identifications, bearing witness to an enrichment of psychic functioning.