Lyuze

A female robot, she pursues Casshern out of revenge for her sister. Before the cataclysm, her sister Liza was injured by Casshern while trying to protect Luna, and eventually died a slow death from corrosion. However, she hesitates when Casshern willingly allows her the chance to kill him, and is unwilling to do so. Instead, she begins to follow and accompany Casshern on his journey, eventually developing feelings for him. (Source: MAL)