Original Title: 仮面ライダ
Takeshi Hongo, a young scientist boasting of an IQ of 600 and a racing prodigy, is abducted and his body surgically remodeled by Shocker, an evil secret society plotting for global domination.
Hongo wins the championship, but the model who brings him his bouquet suddenly bares her fangs and attacks!
With growing suspicion, Hongo investigates the woman's home, and finds it has been transformed into a lab.
Shocker tests their mysterious Scorpion Man by releasing their slave workers and telling them that they can have their freedom if they can escape within 10 minutes, but one by one they die at the Scorpian Man's hands.
S3 E1 - X-X-X-Rider is Born!!
S3 E3 - Assassination Dark Spider Operation!!
S3 E5 - The One-Eyed Monster's Human Review Operation!
S3 E7 - The Terrible Genius Human Project!
S3 E8 - Mystery!? Little Earth - Middle Earth - Big Earth
S3 E10 - GOD Secret Police! Apollo Geist!!
S3 E11 - The Invulnerable Water Snake Monster Hydra!
S3 E13 - GOD Radamus's Great Prophecy!
S3 E14 - Apollo Geist - The Madness of Insect Hell
S3 E16 - Counterattacking Apollo Geist! X Rider in Danger!!
S3 E17 - Scary! Humans are Being Made into Books!!
S3 E18 - Scary! It's GOD's Cat Disguise Operation!!
S3 E20 - A Monster!? The Mysterious Snake Man Appears!!
S3 E22 - The Terrible Great Giant! King Dark Appears!!
S3 E24 - Revenge Demon Geronimo! The Silent Attack!!
S3 E25 - The Mysterious Thief, Rhinocerous Beetle Lupin!!
S3 E27 - Special Edition, Full Force of Five Riders!!
S3 E29 - Deathmatch!! X Rider vs. X Rider!!
S3 E30 - I Want Blood! The Monster of the Corpse Swamp!!
S3 E32 - Showdown! King Dark vs. X Rider
S3 E34 - The Weapon of Terror Aims at Three Riders!!
Masked Rider, having fallen into a pit trap, loses his power in the secret room where no wind can reach and reverts back to his form as Hongo. Hongo begins an investigation into the series of incidents where people who had glasses made at Kagemura's Optometry store have gone missing. But even Ruriko gets some lure glasses, and she disappears as well. Cobra Man makes an attack on the gold vault, but when the pet dog of security guard Kondo barks at him, he drops his fangs!
Seeking his fangs, he attacks Kondo. Ritsuko Ayakoji of the Ayakoji Biology Research Institute, Shocker's collaborator, puts up advertisements for “Purchasing Animals” to gather animal blood and capture the people who bring in their pets.