|This article is about a/an ally in Kamen Rider X.|
Ryoko Mizuki (水城 涼子 Mizuki Ryōko): 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.
- Rifle: Ryoko was once seen wielding an unidentified make of rifle.
Behind the scenes
- Kamen Rider X
- Episode 1: X-X-X-Rider is Born!!
- Episode 2: Run, Cruiser! X-Rider!!
- Episode 3: Assassination Dark Spider Operation!! (theatrically screened as Kamen Rider X)
- 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
|Redizer - Perfecter - Ridol - Mercury Circuit - Cruiser|
|Tōbei Tachibana - Chiko - Mako - Kiriko Mizuki - Ryoko Mizuki - Keitaro Jin|
|Takeshi Hongo - Hayato Ichimonji - Shiro Kazami - Joji Yuki|
|Government of Darkness|
|King Dark - G.O.D. General Commander - Dr. Noroi|
|Apollo Geist - G.O.D. Warfare Agents|
|Neptune - Pannic - Hercules - Medusa - Cyclops - Bull Man Minotaur - Birdman Icarus - Mighty Atlas - Mach Achilles - Flaming Prometheus - Hydra - Chimera - Ulysses - Reaper Chronos - Cerberus - Alseides - Cateus|
|Ogle-Dagger - Salamander-Gong - Ghengis Khan-Condor - Toad-Goemon - Scorpion-Geronimo - Horned Beetle-Lupin - Franken Bat - Starfish-Hitler - Spider-Napoleon - Chameleon-Phantom - Leech Dracula - Lizard-Viking - Ant Capone - Centipede Youkihi - Tiger Nero - Scorpion-Geronimo Jr.|
|View • Edit|