A Jewish girl with a photographic memory, Erika has a catalog of paintings hidden from the Nazis called "The List of Hope" memorized. Nazis pursue her to get this information, and she comes under the protection of Liu Feiyan.
In Souten no Ken: Re:Genesis, it's further revealed that she also knows the secret of "Tentei's Thunderbolts" (天帝の雷)... the designs for an atomic weapon. She is pursued by the Nahash who consider her their migdol.
