|Wolf Girl Jo|
|Nationality:||German, but since she is considered dead, she has no nationality|
|Voice actor:||Motoko Kumai|
Wolf Girl Jo (狼少女ジョー) is a character from Ehrgeiz.
As a newborn, Jo survived an airplane crash in the Amazon Jungle while sustaining only minor injuries to her head. Raised by wolves, she gained physical strength that exceeds and surpasses normal human capabilities by as much as three times. When her "wolf" mother and sibling were killed by hunters in front of her eyes, she developed great hatred and distrust toward humans. Jo became known as the "Man-eating wolf girl", and is eventually captured and imprisoned. There, she exhibited uncontrollable hostility towards her supervising officers. Having heard about this girl through various rumors, a member of Red Scorpion recruited her and gives her the name, Jo. After some intensive training, she is given direct orders by Red Scorpion to seek the Ehrgeiz without knowing or understanding the reason why.