Eve

Eve is originally a self-made "bio-weapon". She can use nanotechnology to deform herself or parts of her body. She was actually raised to be a killing machine, but she was saved by Sven Vollfied and spared by Train Heartnet . She then decides to follow Sven. She also likes reading books and watching fireworks. Her weapon is her body itself. She can deform her arms into blades, hammers and protective shields, harden her body, etc.