Though Fran lives at the Madaraki estate, she is not blood related to Dr. Madaraki Naomitsu; instead she is his "masterpiece." She has a somewhat disturbing, vaguely incestuous love for the doctor, who she calls "Professor." She has obviously undergone several inhuman surgeries, being fitted with two giant Frankenstein-like electrodes at each side of her head and marked with stitches all over her body, as if she had been patched up. However, at first glance she looks like a regular girl. Sometimes she even dons a blazer and goes to school, though her unsteady step and a habit of drawing out the end of her sentences still stand out.

She seems absent-minded and easy-going, which is true to a point. The real issue is that she is somewhat removed from humanity—Fran is often genuinely uncaring of any potential consequences of her actions, and seems to have absolutely no regard for traditional morality. Because of this she will take on any client from superheroes to mobsters; in a mercenarial take on her work, so long as she is paid she is happy to serve.

She makes her client’s dreams come true—and very often their nightmares as well. The results of her work can be wondrous or terrifying, usually both. Even so, Fran carries on without a concern. During surgery she is able to increase the number of her arms and operate at great speeds. Her one creed is that she cannot ever take life; of course, her victims often wish she would kill them out of mercy.