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This article is about a/an group of villains in Kamen Rider Build.

Kaisers (カイザー Kaizā) is the name of several Kamen Rider-like villains in Kamen Rider Build, including the following characters:

History

Origin

The Kaiser System was originally developed by Kaisei Mogami of the World of Build in conjunction with his other self from the World of Ex-Aid as a biological weapon via the combination of Nebula Gas and Bugster Virus. Joining forces, they became the Bikaiser, only to be defeated by the combined forces of Kamen Rider Build and Kamen Rider Ex-Aid. Kamen Rider Heisei Generations FINAL: Build & Ex-Aid with Legend Riders

Hell Bro's

Acting on behalf of Blood Stalk and Nanba Heavy Industries, Nariaki Utsumi updated the Kaiser System. Its test subject was a man who was abducted and exposed to Nebula Gas. However, instead of becoming a Smash, he was provided with a Nebulasteam Gun to become the prototype Nebula Hell Bros. Accompanied by a squad of Faust Guardians, Nebula Hell Bros was sent to attack a Touto facility holding Fullbottles. He was confronted by Sento Kiryu who, recognizing the model as a Bikaiser, First Chapter initially believed him to be Kaisei Mogami, the man who originally developed and used the Kaiser System to transform.

After scrapping the Guardians in ToraUFO Form, Kamen Rider Build assumed KirinCyclone to engage the Bikaiser before switching to KujiraJet to defeat him. With the Kaiser transformation canceled, Sento found the subject to be a mere amnesiac whom he took to safety. Meanwhile, Nariaki Utsumi, having used the battle to finalize the new Bikaiser he created, recovered the Nebulasteam Gun left behind by the Nebula Hell Bros which, upon inserting the Remocon and Engine Gears, transformed him into the complete Bikaiser Hell Bros. Next Chapter

Holographic constructs of Engine Bros and Remocon Bros were pitted against Gentoku Himuro when he first transformed into Kamen Rider Rogue. Fueled by rage, Rogue easily defeated them. Prologue: NIGHT ROGUE RISES

A Clone Hell Bro's was created by Nariaki Utsumi and pitted against various Kamen Rider holograms, including Build RabbitTank Sparkling, Cross-Z Charge and Build Hazard. Being a clone itself, Clone Hell Bros lacked human emotions as well as a sense of pain. Ultimately, Utsumi pitted the Clone Hell Bro's against the real Kamen Rider Build, whom he instructed to use the Same and Bike Fullbottles to defeat it. Kamen Rider Build: Raising the Hazard Level ~7 Best Matches~: Final Chapter Data collected from the Clone Hell Bro's were used by Utsumi to create the Clone Smashes. Surging Magma!

Ultimately, the Nebulasteam Gun and Gears were granted to brothers Fu and Rai Washio, whom served as soldiers of Seito, which CEO Juzaburo Namba backed to dominate Japan. These new Hell Bro's Kaisers proved superior in power to the Hard Smash Hazards as well as the Kamen Riders prior to Rogue. The Phantom of the West

Forms

Remocon Bro's
KRBu-Remocon Bros

Remocon Bro's

"Gear Remocon! Funky! (Rhythmic beeping) Remote Control Gear!"
―Transformation announcement[src]

Statistics

  • Height: 202.0 cm.
  • Weight: 103.5 kg.

Ability Perimeters:

  • Punching Power: 30.5 t.
  • Kicking Power: 37.2 t.
  • Maximum Jump Height: 48.6 m.
  • Maximum Running Speed: 100 m. per 1.7 sec.

Remocon Bro's (リモコンブロス Rimokon Burosu) is the turquoise Kaiser accessed with Gear Remocon.

Remocon Bro's possesses strength to rival Kamen Rider Grease, Kamen Rider Cross-Z Charge, and Kamen Rider Build RabbitTank Sparkling Form, only beginning to struggle with Build's RabbitTank Hazard Form.

Remocon Bro's has 3 different finishers:

  • Nebulasteam Gun finisher:
    • Funky Drive (ファンキードライブ Fankī Doraibu): Remocon Bro's channels the power of a Gear and performs a powerful blast attack.
      • Gear Engine:
      • Gear Remocon: Remocon Bro's shoots energy gears at the enemy. This finisher can be accompanied with a Kaiser wielding the Steam Blade.
    • Funky Attack (ファンキーアタック Fankī Atakku) Remocon Bro's channels the powers of a Fullbottle and performs a powerful blast attack.
  • Nebulasteam Rifle finisher:
    • Funky Shot (ファンキーショット Fankī Shotto): Remocon Bro's channels the power of a Gear or Fullbottle and performs a powerful blast attack.
      • Gear Engine:
        • Elek Steam: Remocon Bro's shoots an electric energy-like engine bolt at the enemy.
      • Gear Remocon:

Appearances: ROGUE Episode 1, Build Episodes 23-25, 29-32

Engine Bro's
KRBu-Engine Bros

Engine Bro's

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

Statistics

  • 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.

Engine Bro's (エンジンブロス Enjin Burosu) is the white Kaiser accessed with Gear Engine.

Engine Bro's possesses strength to rival Kamen Rider Grease, Kamen Rider Cross-Z Charge, and Kamen Rider Build RabbitTank Sparkling Form, only beginning to struggle with Build's RabbitTank Hazard Form. Engine Bro's, however, is not without a weakness. Being based on an engine, he can easily be damaged with water-based attacks.

Engine Bro's has 3 different finishers:

  • Nebulasteam Gun finisher:
    • Funky Drive (ファンキードライブ Fankī Doraibu): Engine Bro's channels the power of a Gear and performs a powerful blast attack.
      • Gear Engine:
      • Gear Remocon: Engine Bro's shoots energy gears at the enemy. This finisher can be accompanied with a Kaiser wielding the Steam Blade.
    • Funky Attack (ファンキーアタック Fankī Atakku) Engine Bro's channels the powers of a Fullbottle and performs a powerful blast attack.
  • Nebulasteam Rifle finisher:
    • Funky Shot (ファンキーショット Fankī Shotto): Engine Bro's channels the power of a Gear or Fullbottle and performs a powerful blast attack.
      • Gear Engine:
      • Gear Remocon:

Appearances: ROGUE Episode 1, Build Episodes 23-26, 29-32

Kaiser
Left Kaiser

Kaiser

"Gear Remocon! Funky! (Rhythmic beeping) Remote Control Gear!"
―Transformation announcement[src]

Statistics

  • Height: 202.0 cm.[1]
  • Weight: 103.5 kg.[1]

Ability Perimeters:

  • Punching Power: 20.3 t.[1]
  • Kicking Power: 24.8 t.[1]
  • Maximum Jump Height: 32.4 m.[1]
  • Maximum Running Speed: 100 m. per 2.8 sec.[1]

Kaiser (カイザー Kaizā), also named Left Kaiser (レフトカイザー Refuto Kaizā), is the blue Kaiser accessed with a blue Gear Remocon.

Kaiser's finisher is the Funky Drive (ファンキードライブ Fankī Doraibu): Kaiser channels the power of a Gear and performs a powerful blast attack.

  • Gear Remocon: Kaiser fires a blue large gear energy shot at the enemy.

Appearances: Heisei Generations FINAL: Build & Ex-Aid with Legend Riders, Build Episode 23 (archive footage only)

Kaiser Reverse
Kaiser Reverse

Kaiser Reverse

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

Statistics

  • Height: 202.0 cm.[1]
  • Weight: 103.5 kg.[1]

Ability Perimeters:

  • Punching Power: 20.3 t.[1]
  • Kicking Power: 24.8 t.[1]
  • Maximum Jump Height: 32.4 m.[1]
  • Maximum Running Speed: 100 m. per 2.8 sec.[1]

Kaiser Reverse (カイザーリバース Kaizā Ribāsu), also named Right Kaiser (ライトカイザー Raito Kaizā), is the red Kaiser accessed with a red Gear Engine.

Kaiser Reverse's finisher is the Funky Drive (ファンキードライブ Fankī Doraibu): Kaiser Reverse channels the power of a Gear and performs a powerful blast attack.

  • Gear Engine: Kaiser Reverse fires a large energy shot at the enemy, then follows it up with a roundhouse kick that leaves behind a trail of red energy.

Appearances: Heisei Generations FINAL: Build & Ex-Aid with Legend Riders


Nebula Hell Bro's

Nebula Hell Bro's

Nebula Hell Bro's


Gearless Bi-Kaiser

Nebula Hell Bro's (Bikaiser version)


Statistics

  • Height: 202.0 cm.[1]
  • Weight: 108.0 kg.[1]

Ability Perimeters (Hell Bro's version):

  • Punching Power: 41.6 t.[1]
  • Kicking Power: 50.6 t.[1]
  • Maximum Jump Height: 64.8 m.[1]
  • Maximum Running Speed: 100 m. per 1.4 sec.[1]

Nebula Hell Bro's (ネビュラヘルブロス Nebyura Heru Burosu) is the prototype of Hell Bro's. It also serves as the initial form of the completed Bikaiser/Hell Bro's and is seen briefly during transformation before combining with both component Kaisers' gears.

Unlike the completed Kaisers, the Nebula Hell Bros is similar to a standard Smash transformation in that the user mindlessly attacks anyone in sight.After the transformation is cancelled, the user has no memory of their actions while transformed.

Appearances: Kamen Rider Heisei Generations FINAL: Build & Ex-Aid with Legend Riders, Raising the Hazard Level ~7 Best Matches~ Episodes 1-2, Build Episodes 26-27, 29-32

Hell Bro's
KRBu-Hell Bros

Hell Bro's

"Gear Engine! Gear Remocon! Funky Match! Fever! (Rhythmic beeping, engine revving) Perfect!"
―Transformation announcement[src]

Statistics

  • Height: 202.0 cm.
  • Weight: 108.0 kg.

Ability Perimeters:

  • Punching Power: 41.6 t.
  • Kicking Power: 50.6 t.
  • Maximum Jump Height: 64.8 m.
  • Maximum Running Speed: 100 m. per 1.4 sec.

Hell Bro's (ヘルブロス Heru Burosu) is the fusion of Engine Bro's and Remocon Bro's accessed by inserting either Gear Engine or Gear Remocon into the Nebulasteam Gun, then removing it and inserting the other gear before pulling the trigger.

As Hell Bro's is a fusion of both Kaisers, Hell Bro's stats are higher than even Kamen Rider Rogue, with speed similar to Build's Hazard Forms and average jumping power.

Hell Bro's has 3 different finishers:

  • Nebulasteam Gun finisher:
    • Funky Finish (ファンキーフィニッシュ Fankī Finisshu): Hell Bro's channels the power of a Gear and performs a powerful blast attack.
      • Gear Engine:
      • Gear Remocon:
    • Funky Attack (ファンキーアタック Fankī Atakku) Hell channels the powers of a Fullbottle and performs a powerful blast attack.
  • Nebulasteam Rifle finisher:
    • Funky Shot (ファンキーショット Fankī Shotto): Hell channels the power of a Gear or Fullbottle and performs a powerful blast attack.
      • Gear Engine:
      • Gear Remocon:

Appearances: Raising the Hazard Level ~7 Best Matches~ Episodes 2-3, Build Episodes 26-27, 29-32

Bikaiser
Bikaiser

Bikaiser

"Gear Engine! Gear Remocon! Funky Match! Fever! (Rhythmic beeping, engine revving) Perfect!"
―Transformation announcement[src]

Statistics

  • Height: 202.0 cm.[1]
  • Weight: 108.0 kg.[1]

Ability Perimeters:

  • Punching Power: 40.6 t.[1]
  • Kicking Power: 49.6 t.[1]
  • Maximum Jump Height: 64.8 m.[1]
  • Maximum Running Speed: 100 m. per 1.4 sec.[1]

Bikaiser (バイカイザー Baikaizā) is the fusion of Kaiser and Kaiser Reverse accessed when both Kaisers transform together.

Appearances: Heisei Generations FINAL: Build & Ex-Aid with Legend Riders, Build Episode 27 (archive footage only)


Equipment

Arsenal

Behind the scenes

Conception

In the script of Kamen Rider Heisei Generations FINAL: Build & Ex-Aid with Legend Riders, the Kaisers of Build World and Ex-Aid World were respectively named as L Kaiser (エルカイザー Eru Kaizā, Left Kaiser) and R Kaiser (アールカイザー Āru Kaizā, Right Kaiser). Coincidentally, this naming would have echoed the Double Action Gamer of Kamen Rider Ex-Aid.[2]

Notes

Appearances


References

Sento Kiryu - Ryuga Banjo - Kazumi Sawatari - Gentoku Himuro - Evolto - Nariaki Utsumi - Shinobu Katsuragi - Kengo Ino - Killbus - Keiji Uraga
Gear
Transformation Gear
Fullbottles - Build Driver - Transteam Gun - (Great) Cross-Z Dragon - Sclashjellies - Sclash Driver - Hazard Trigger - Nebulasteam Gun - Cross-Z Magma Knuckle - Evol-Driver - Evol-Trigger - Grease Blizzard Knuckle - Killbuspider - Grease Perfect Kingdom
Weapons
Drill Crusher - Hawk Gatlinger - 4Koma Ninpoutou - Kaizoku Hassyar - Fullbottle Buster - Steam Blade - Beat Closer - Twin Breaker - Muscle Glove - Solstall Wings - Giant Scratcher - Space Ride Arm - Spine Knuckle - Long Range Cleaner - Trash Converter - Gold Lio Gauntlet - Multi Deluge Gun
Other
Pandora Box - Halfbodies - Fullbottle Holder - Build Phone
Terminologies
Vortex Finish - Hazard Level - Project Build - Sky Wall - Nebula Gas
Allies
nascita: Misora Isurugi - Soichi Isurugi - Sawa Takigawa - Kazumi Sawatari - Gentoku Himuro
Other
Prime Ministers: Taizan Himuro (Touto) - Yoshiko Tajimi (Hokuto) - Masakuni Mido (Seito)
Namba Heavy Industries Ltd.: Juzaburo Namba - Nariaki Utsumi - Guardian
Hell Bro's: Fu Washio - Rai Washio
Aliens: Vernage
Downfall: Keiji Uraga - Simon Marcus
Gentoku Himuro - Evolto - Nariaki Utsumi - Takumi Katsuragi - Shingo Kuwata - Eita Kawai
Touto: Needle Smash - Strong Smash - Burn Smash - Flying Smash - Mirage Smash - Square Smash - Press Smash - Ice Smash - Stretch Smash
Hokuto: Castle Hard Smash - Stag Hard Smash - Owl Hard Smash
Kaiser: Kaisei Mogami (World of Ex-Aid)
Kengo Ino - Ryoka Saiga - Mitsuomi Gobara - Evolto - Killbus