ヴァルト, エーリカ, フラウ・X, Frau X, Erica, Erica Wald
Alitas childhood friend back on Mars when she was still called Yoko. She is part of Alitas first memories ever having been raised at the same orphanage. After both were rescued by Gerda she and Yoko joined the Panzer Kunst school. She is now a highly skilled warrior codenamed Frau X working as a mercenary for groups like the Neo Third Reich Division.