Ryoko Mizuki

: 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.
==Arsenal==
*Rifle: Ryoko was once seen wielding an unidentified make of rifle. 
==Behind the scenes==
===Portrayal===
Ryoko Mizuki was portrayed by , who also portrayed her identical twin sister Kiriko Mizuki.
==Appearances==
* Kamen Rider X
**Episode 1: X-X-X-Rider is Born!!
**Episode 2: Run, Cruiser! X-Rider!!
**Episode 3: Assassination Dark Spider Operation!! 
**Episode 4: G.O.D., the Shadow of Fear!!
**Episode 5: The One-Eyed Monster's Human Review Operation!
**Episode 6: The Japanese Islands Fragmentation Plan!
**Episode 7: The Terrible Genius Human Project!
**Episode 8: Mystery!? Little Earth - Middle Earth - Big Earth
Category:Deceased
Category:Kamen Rider X
Category:Allies
Category:Police
Category:X Characters