With schizophrenics negative delusional identities constitute one way of psychotic alteration of self-identification. The main notion is of being a personification of evil. In a cross-cultural comparison study we found in the Austrian sample 13 patients with negative delusional identities. Our present study is based on detailed interviews and evaluations of medical records of this sample. Our aim was to draft a typology of delusional identities as a basic requirement for a phenomenology of the negative manifestations. Further investigative goals were the efforts of self-explanation undertaken by the patients with regard to their altered condition, the search for a pathogenetic transitional series and the functional value of the new identities. According to our estimation the basic mood on which negative delusional identities are founded is timid and dejected. Further basic requirements are a disturbed conscience of the ego and the concurrence of grandeur and guilt ideas. Half of our patients imagined to be reincarnations of negative biblical figures, three regarded themselves as possessed, two attributed their identities to heredity. Despite of diverse situative points of departure a common pathogenetic transitional series emerged for all patients. From a functional point of view a negative delusional identity seems to offer some kind of protection from further structural disintegration as well as relief from feelings of guilt--all that however at the price of structural deformations with dynamic depletion.