This article is about a/an character in Kamen Rider Build.

Norio Matsui (松井紀男 Matsui Norio) was a scientist from the Touto Institute of Advanced Matter Physics who became a member of Faust.

Character History

Following his director Gentoku Himuro, Matsui was part of a cabal of scientists of the Touto Institute of Advanced Matter Physics who sought to continue Takumi Katsuragi's officially suspended research into Nebula Gas in 2015. Alongside Yoshikazu Takahashi, Matsui introduced himself to Katsuragi as his assistants. When Gentoku named the group Faust, Matsui was among the personnel who cheered him on. Prologue: NIGHT ROGUE RISES

Engine Bro's

Engine Bro's
KRBu-Engine Bros

Engine Bro's

"Gear Engine! Funky! (Rock music, engine revving) Engine Running Gear!"
―Transformation announcement[src]


  • Height: 203.0 cm.
  • Weight: 103.5 kg.

Ability Perimeters:

  • Punching Power: 30.2 t.
  • Kicking Power: 37.2 t.
  • Maximum Jump Height: 48.6 m.
  • Maximum Running Speed: 100 m. per 1.7 sec.

One half of the Hell Bro's, Engine Bro's (エンジンブロス Enjin Burosu) is the white Kaiser, transformed into by inserting the Gear Engine into the Nebulasteam Gun. This updated Kaiser System was created by Nariaki Utsumi, based on that originally developed by Kaisei Mogami.

Appearances: ROGUE Episode 3

Behind the scenes


Norio Matsui was portrayed by Tomohiko Ichihara (市原朋彦 Ichihara Tomohiko). As Engine Bro's, his suit actor is Keisuke Azuma (東慶介 Azuma Keisuke).