Nebulasteam Gun

The Shock Scale Smoke Pistol Nebula Steam Gun (撃鱗煙銃ネビュラスチームガン) is an upgraded version of the Transteam Gun, the personal weapon of Kamen Rider Rogue, and the transformation device of the Kaisers. It combines with the Steam Blade to form the Nebula Steam Rifle (ネビュラスチームライフル).

Created by Kaisei Mogami, later updated by Nariaki Utsumi, the Nebula Steam Gun is represented as Kaiser System (カイザーシステム).

Transformation
The Fullbottle-like Gears are loaded into the Nebula Steam Gun and the trigger is pulled to transform into a Kaiser. To transform into the Hell Bros, the Gear Engine or Gear Remocon is inserted before being removed to insert the other and pull the trigger. The transformation command is "Jundou" (潤動).

Finisher
The Nebula Steam Gun has 4 shooting finishers: Funky Drive (ファンキードライブ) with any Gear as a Kaiser, Funky Finish (ファンキーフィニッシュ) with any Gear as a Hell Bros, Funky Break (ファンキーブレイク) with the Crocodile Crack Fullbottle and Funky Attack (ファンキーアタック) with any other Fullbottle.

While in Rifle Mode, its shooting finisher is Funky Shot (ファンキーショット) with any Fullbottle or Gear. Funky Drive=
 * Gear Engine:
 * Gear Remocon: Remocon/Engine Bros shoots energy gears at the enemy. This finisher can be accompanied with a Kaiser wielding the Steam Blade.

Behind the Scenes
Nebula Steam Gun is voiced by KORBY, who also voiced the Build Driver.

Appearances

 * Icon-build.png Kamen Rider Build
 * Icon-exaid.png Kamen Rider Heisei Generations FINAL: Build & Ex-Aid with Legend Riders
 * Kamen Rider Build: Raising the Hazard Level ~7 Best Matches~
 * Next Chapter
 * Episode 23: The Phantom of the West
 * Episode 24: A Man Called Rogue