Trivia

This series marked the first Kamen Rider series since the passing of the Original Creator, Shotaro Ishinomori, in 1998.

Kuuga's Ultimate form is the Heisei Rider final form with the shortest number of appearances in their respective series, with its only appearances only as a silhouette in some episodes and its proper debut in one episode before the finale.

The television phenomenon known as the "Odagiri effect" is named after Joe Odagiri himself, specifically in reference to the casting of him as the lead in Kuuga. The Odagiri effect is a television phenomenon in which a program attracts a larger than expected number of women viewers because the program stars attractive male actors or characters.

This is the last Kamen Rider series and the only Heisei series to feature a single Rider.

Yusuke Godai is the only Heisei Primary Rider to have no secondary nor extra Riders to aid his battle, though this may have been due to the fact that Ishinomori had worked on Kuuga before his death, and the staff of the series left him to fight the Gurongi alone Rider-wise as a tribute to the creator.