Sonya is one of the main characters from Kill Me Baby. She is an assassin from a "foreign country" and a rival of Goshiki Agiri, who just so happens to be her classmate. She is also a "friend" of Oribe Yasuna.
She has blue eyes and long blonde twintails, tied with a black ribbon.
She is voiced by Tamura Mutsumi in the 2012 anime adaptation.