Kokoro

Kokoro is a Maiko (Apprentice Geisha), and Ba Ji Quan martial artist from the Dead or Alive series, who made her debut in Dead or Alive 4.
She is the illegitimate daughter of Fame Douglas and one of his former mistresses Miyako, making Kokoro the half-sister of Helena Douglas. It is possible that if Helena were to give up her control of the Dead or Alive Tournament Executive Committee, Kokoro would be next-in-line to take control.