ニケ

A character in [[Break Blade]] . "Despite looking like a child, Nike is actually 25 years old. While she displays a look of a sweet, innocent girl, in reality she is a sadistic killer who will not hesitant to kill anyone who angers her, whether they be enemy or ally." (English "Wikipedia":http://en.wikipedia.org/wiki/Broken_Blade quote).

Nike has short [[black hair]], tied up in [[twintails]].
nike (break blade)