The Beast Rider Squad is a team of animal-themed Riders led by a revived Takeshi Asakura and the main antagonists of the Kamen Rider Ex-Aid special Kamen Rider Brave: ~Let's Survive! Revival of the Beast Rider Squad!~. They were assembled by "King Dark" (really a hologram created by a Foundation X member) to obtain the Night of Safari Gashat from Genm Corp., which were being eyed by Foundation X for another one of their projects.
The Beast Rider Squad was first brought together with four holograms of the Kamen Riders Dark Kiva, Sasword, Beast, and Tiger. Leading them was Takeshi Asakura/Kamen Rider Ouja, who was brought back to life by King Dark to personally deal with the CR Riders. Asakura would later start hurting numerous people and beat them to a bloody pulp simply because he longs fighting. And as he confronts Hiiro Kagami, Kamen Rider Brave, he tells his Beast Rider Squad cohorts to stand back, claiming Hiiro to be his prey as he transforms into Kamen Rider Ouja. Throughout the fight, it is revealed that Hiiro and Asakura are polar opposites (while Asakura fights to randomly kill and destroy people for his own happiness, Hiiro fights to save people's lives and make them happy). This prompts Hiiro to transform into Safari Quest Gamer Level 4 via the Night of Safari Gashat and destroy Ouja. Not long after, as Ouja is knocked out of his transformation, Asakura advises Hiiro to keep fighting or die, much to the latter's disapproval.
- Takeshi Asakura/Kamen Rider Ouja