Ryoko Mizuki

Ryoko Mizuki (水城 涼子): Keisuke's fiancee, Keitaro's assistant, and a G.O.D. member. She is an Interpol investigator and executes undercover operation in the G.O.D. She became a cyborg by G.O.D.'s operation. Her true identity was exposed protecting a child from Strong Arms Atlas and she was destroyed by the General of G.O.D.

Portrayal
Ryoko Mizuki was portrayed by Naoko Miyama (美山 尚子), who also portrayed her identical twin sister Kiriko Mizuki.