Nine Heisei Riders

The first nine leading Kamen Riders of the Heisei era are split into two groups in Kamen Rider Decade.

The original Nine Heisei Riders as they appeared in their respective series.
The alternate Heisei Riders of the Nine Worlds (with Den-O is original).

The powers of the Nine Heisei Riders are used by the tenth Heisei Rider, Tsukasa Kadoya (Kamen Rider Decade), via the Rider Cards. These cards allow Decade to transform into the previous nine Riders and utilize most of their abilities and arsenal.

Nine Heisei Riders

Kamen Rider G

"Stand up! - The Rider who fights for love : G! ― Kuuga, Ryuki, and the other Heisei Riders' words of encouragement

The Nine Heisei Riders appear with Decade through a dimensional wall in the special Kamen Rider G, urging on the titular rider to defeat the Phylloxera Worm. As Ryouta Murai voices Kuuga (as well as filling in for Ryuki), identifying him as Decade's Kuuga, Yusuke Onodera, it can be assumed that these Nine Heisei Riders were the A.R. versions from the Nine Worlds.

The original Nine Heisei Riders are the protagonist Kamen Riders of the first nine shows of the Heisei era Kamen Rider Series. They return at various points and in varying numbers in Kamen Rider Decade where they give Tsukasa Kadoya the mission to save the multiverse by becoming the tenth Heisei Rider, Decade. He starts his journey by travelling across the Nine Worlds, meeting alternate versions of the Nine Heisei Riders in their respective worlds. History

The Journey Begins

In Kamen Rider Decade, Wataru Kurenai appears before Tsukasa Kadoya as a representative of the Kamen Riders, explaining to him that something is forcibly merging the parallel worlds of the Kamen Riders and causing their destruction. The Riders give Tsukasa the task of traveling the worlds and saving them as Kamen Rider Decade, while they prevent the destruction of Natsumi Hikari's world by freezing it in time.

All Riders vs. Dai-Shocker

Having traveled across the Nine Worlds and now moving across further New Worlds, Tsukasa arrived in his own world, the World of Decade. Several of the Heisei Riders fought with Showa Riders as well as Decade, Diend, and the alternate Kuuga in the Rider Battle tournament to decide the strongest Kamen Rider to solve the fusion of the Nine Worlds.

However, with Decade prevailing, this was revealed to be part of Dai-Shocker's plot to conquer the worlds. It was revealed that before losing his memory, Tsukasa was the Great Leader of Dai-Shocker. Briefly reassuming this role before being betrayed and deposed, he eventually remembered what it means to be a hero and Kamen Rider.

Fighting with Diend against the Dai-Shocker army, they were beaten back until the arrival of the other Kamen Riders, the eight Heisei Riders Agito to Kiva with the first fourteen Showa Riders. Joined by a initally brainwashed Onodera/Kuuga, they performed the All Rider Kick and destroyed the Dai-Shocker Castle. The colossal King Dark emerged from the ruins and overpowered the Kamen Riders before the arrival of the fifteenth Showa rider, Kamen Rider J, summoned by Diend, King Dark was defeated when it was combined with Decade's Final Form Ride who used the power of all the other Kamen Riders to destroy King Dark. With Dai-Shocker defeated, the past Kamen Riders took their leave through a dimensional wall, watched by the Hikari Studio group. As they left, Shouichi Tsugami (Agito) told Tsukasa that next would be his real journey. Kamen Rider Decade: All Riders vs. Dai-Shocker

The Journey Ends

At the end of Decade's journey, however, Wataru reappears and tells Tsukasa that his mission was to destroy the alternate Heisei Kamen Riders, rather than befriending them as he did, and his actions hastened the catastrophe rather than preventing it. Wataru transforms into Kiva once more in order to fight Decade and end the crisis. In Movie War 2010, following Tsukasa's destruction, Wataru explains to Natsumi and Daiki Kaito that Decade had no story of his own, instead fulfilling whatever role the Rider worlds needed him to be, and that his death has undone the destruction of the multiverse.

9 Heisei Riders