This article is about a/an rider that appeared in a stage show in Kamen Rider Fourze.

Boot (ブート Būto) is a part of SOLU, or Nadeshiko Misaki, and is controlled by Foundation X. He resembles a Kamen Rider with a belt similar to the Fourze Driver, and is used to collect Rider Energy to revive the Galaxy King. He is first seen using a copying ability to take on the form of Kazari to fight Kamen Rider OOO, then later develops a friendship with Gentaro Kisaragi and helps him fight the revived Groundain and Skydain. He finally sacrifices himself to allow Gentaro to destroy the Groundain and Skydain. His suit resembles Mad Gallant from Kyoujuu Tokusou Juspion.