The impostor is a social climber with a charming, disarming behavior and a specific sense of humor. He plays his rôle, aware of his faking and making fun of the victims. Below the thin layer of pleasure in irony, a deep depression is hidden which does not allow him to enjoy his self-created success and makes him provoke his downfall. The fundamental feature of his psychology, as seen by Bergler, is his narcissism which permanently seeks to overcome an early oral disappointment. To restore that lesion in self-esteem the inner, unconscious necessity arises to prove consistently the capacity to