|This article is about a/an ally in Kamen Rider, the original series.|
A friend of Ruriko's friend Hiromi (and something of a troublemaker at first), Mari became a valuable member of the Racing Club's support team. Though she lacked actual riding experience, Mari proudly boasted her prowess in fencing which came in handy in small battles with Shocker Combatants.
Mari would leave the series without explanation after Episode 38, though she still receives a credit in Episode 39.
Behind the scenes
Mari was played by Linda Yamamoto (山本 リンダ Yamamoto Rinda).