Gertraud Schwartz is one of two Nosferatu followers of the Fourth Reich, the other being Norn. In life she is said to have possessed great beauty, a true German woman. She is said to have been Embraced as a punishment (for what is unknown) when the Soviets took Berlin, but this is a subject that is generally not spoken of in any detail.
The appearance she puts on when she uses Obfuscate is certainly impressive, though. It is said that she seduces those men that she wishes to kill, letting them see her true face only just before they die. Her reputation then is one of a creature of malice and hatred, easily directed against the Reichs' foes. Beyond violence she seems to have very little ambition, though she is protective of her Haven in the north and the lonely ghoul that serves her.