Nurse Q

"Q" is a nurse accompanying doctor Tesla, whom she is completely devoted to and fiercely protective of. She wears a mask at all times, which she only removes under threat of death. She harbors deep hatred and envy towards Tetsuo for his beauty. [Spoiler] Taichi deduces that her real identity is Satomi Hisae, a young woman who visited doctor Tesla and his grandfather many times. Desperate to become more beautiful and look more youthful, she ultimately resorted to injecting cooking oil into her face, which led to Tesla needing to excise her entire face. Underneath her current mask, her real face has a skeletal appearance. [/Spoiler]