Kamen Rider Specials

This chapter takes place immediately after Sento obtains the Fullbottles from Hokuto and Seito in Episode 21, but one week prior to the scene where Build charges at Grease at the proxy duel. Nariaki Utsumi appears to help Build prepare for the proxy battle with Grease.

This chapter takes place one month after the previous episode, and before the proxy battle in episode 26.

This chapter takes place between episodes 2 and 3. Sento Kiryu demonstrates how he transforms into Kamen Rider Build RabbitTank Form and introduces his new Best Match: Build GorillaMond Form.

This is the third and final episode of ROGUE, released on Kamen Rider Build Blu-ray Collection 3. Chronologically, this episode is the first ever appearance of Gentoku as Kamen Rider Rogue, before his first televised appearance seven months before in Episode 23.

This chapter takes place between episodes 7 and 8. Gentoku Himuro films a FausTube video in their secret lab base (restarting several times after the cameramen interrupt him for going too over-the-top) showing his viewers three things: his transformation into Night Rogue, the combination of the Transteam Gun and the Steam Blade: the Steam Rifle, and the Steam Rifle's finisher: Steam Shot with a Faust Bottle, resulting in the camera's destruction, ending the video.

This chapter takes place between episodes 11 and 12. Ryuga Banjo demonstrates how to transform into Kamen Rider Cross-Z and use the Dragonic Finish. However, the simulation come to a close as Ryuga's trousers are unexpectedly ripped.