|This article is about a/an character in Kamen Rider, the original series.|
|Homeworld:||Earth (Main Timeline Continuity)|
|First Appearance:||The Mysterious Spider Man|
|Last Appearance:||Tokageron and the Big Monster Army|
|Number of Episode|
|Actor:||Chieko Morigawa |
(played as Chieko Maki)
Ruriko Midorikawa (緑川 ルリ子 Midorikawa Ruriko?) (episodes 1-13) - The daughter of Prof. Midorikawa, she initially blames Takeshi Hongo for her father's death, but eventually learns the truth and becomes his ally. In episode 14, it is revealed that she accompanied Hongo on a quest to defeat Shocker activities in Europe.