Nine Violet
ナイン・ヴァイオレット
One of the Violet twins, Nine is really quiet and serious-looking, but she is also really atheletic. Haruka and friends met her at the beach with her twin sister.
Her father is Black Trader, and she and her sister hate Twin Angel, because they thought that they killed their parents. This is why she and Tesla take commands from Black Trader like robots.