Hazard Trigger

This article is about a transformation equipment in Kamen Rider Build.

Hazard Trigger
Item Information
Type	Form-accessing Device
User(s)	Kamen Rider Build Kamen Rider Cross-Z Kamen Rider Blood Kamen Rider Metal Build
Series	Kamen Rider Build
First Appearance	The Forbidden Item
Latest Appearance	Build NEW WORLD: Kamen Rider Grease Full list of appearances

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"Hazard on! (ハザードオン！, Hazādo on!)"

―Activation announcement^[src]

"Super Best Match! (スーパーベストマッチ！, Sūpā Besuto Matchi!)"

―Best Match announcement via the Build Driver^[src]

"Don ten kan! Don ten kan! (ドンテンカン！ドンテンカン！, Don ten kan! Don ten kan!)"

―Looping standby announcement via the Build Driver^[src]

"Gata gata gotton! Zuttan zutan! (ガタガタゴットン！ズッタンズタン！, Gata gata gotton! Zuttan zutan!)"

―Vortex Lever turning announcement via the Build Driver^[src]

"Are you ready? Uncontrol switch! Black hazard! Yabei! (Are you ready（アーユーレディ）? アンコントロールスイッチ！ブラックハザード！ヤベーイ！, Ā yū redi? Ankontorōru suitchi! Burakku hazādo! Yabēi!)"

―Hazard Form transformation announcement via the Build Driver^[src]

"Ready, go! Hazard Attack! (Ready go（レディゴー）! ハザードアタック！, Redi gō! Hazādo Atakku)"

―Standard finisher announcement via the Build Driver^[src]

"Max hazard on! (マックスハザードオン！, Makkusu hazādo on!)"

―Announcement when button is pressed a second time^[src]

"Ready, go! Over Flow! Yabei! (Ready go（レディゴー）! オーバーフロー！ヤベーイ！, Redi gō! Ōbāfurō! Yabēi!)"

―Over Flow Mode activation announcement via the Build Driver^[src]

"Ready, go! Hazard Finish! (Ready go（レディゴー）! ハザードフィニッシュ！, Redi gō! Hazādo Finisshu!)"

―Over Flow Mode finisher announcement via the Build Driver^[src]

"(Item name)! Build Up! (◯◯！ビルドアップ！, (Item name)! Birudo Appu!)"

―Announcement when a Fullbottle or other item that occupies both slots is inserted^[src]

"Are you ready? Over Flow! (Jingle)! Yabei! (Are you ready（アーユーレディ）? オーバーフロー！◯◯！ヤベーイ！, Ā yū redi? Ōbāfurō! (Jingle)! Yabēi!)"

―Transformation announcement with a Fullbottle or other item that occupies both slots^[src]

"Ready, go! Hazard Finish! (Item finisher announcement)! (Ready go（レディゴー）! ハザードフィニッシュ！◯◯！, Redi gō! Hazādo Finisshu! (Item finisher announcement)!)"

―Finisher announcement with a Fullbottle or other item that occupies both slots^[src]

The Hazard Trigger (ハザードトリガー, Hazādo Torigā) is an expansion device for the Build Driver. Developed as part of Project Build, it was designed by Shinobu Katsuragi based on the Evol-Trigger and completed by his son, Takumi Katsuragi. By attaching the Hazard Trigger to the Build Driver and inserting two Fullbottles, Build can upgrade any Best Match form into a Hazard Form (ハザードフォーム, Hazādo Fōmu). However, using such a form for too long causes Build to lose control. Sento later creates FullFull RabbitTank Bottle for use with the Hazard Trigger, transforming Build into RabbitRabbit Form or TankTank Form and allowing him to control its power. The Hazard Trigger is also used to transform by Kamen Rider Blood and Kamen Rider Metal Build.

Design

The Hazard Trigger is composed of the following parts:

• Force Ride Meter (フォースライドメーター, Fōsu Raido Mētā): A meter installed on the Hazard Trigger. It indicates the level that the strengthening agent has permeated the user, and the higher the meter's swing, the higher the combat ability demonstrated. However, if the meter reaches the danger zone during battle, the user will lose their sense of self.
• Security Clear Cover (セキュリティクリアカバー, Sekyuriti Kuria Kabā): A protective cover for the BLD Hazard Switch. It serves to prevent accidental operation during non-combat situations.
• BLD Hazard Switch (BLDハザードスイッチ, BLD Hazādo Suitchi'): The Hazard Trigger's activation switch. After transforming into Hazard Form, pressing the switch again activates the strengthening system, allowing the user to transition to Over Flow Mode (オーバーフローモード, Ōbāfurō Mōdo). In Over Flow Mode, the Hazard Level is temporarily increased, allowing the user to demonstrate combat abilities that are feared not only by enemies but also by allies.
• Progress Tank (プログレスタンク, Puroguresu Tanku): A tank for strengthening agent stored inside the Hazard Trigger. It is filled with Progress Vapor (プログレスヴェイパー , Puroguresu Veipā), an all-purpose strengthening agent developed using Nebula Gas components. The inside of the Hazard Form's suit is also filled with the same strengthening agent, which permeates the user's body when combat begins and gradually raises their Hazard Level. The strengthening agent also reacts with Transgel Solid to change from a gas into a metallic substance, so it is also used as material for suits and armor.
• BLD Ride Connector (BLDライドコネクター, BLD Raido Konekutā): The Hazard Trigger's connection terminal. By connecting it to the BLD Ride Port (BLDライドポート, BLD Raido Pōto) on the top of the Build Driver, the Driver's functions can be expanded. When transforming into a Hazard Form, it deploys the jet-black Hazard Ride Builder (ハザードライドビルダー, Hazādo Raido Birudā), a mold used to shape armor, and equips the user with the completed enhanced equipment.

Functionality

To transform into a Hazard Form, Build first opens the Security Clear Cover and activates the Hazard Trigger by pressing the BLD Hazard Switch. He then attaches it to the Build Driver via the BLD Ride Port before inserting two Fullbottles and turning the Vortex Lever as usual. This deploys the black Hazard Ride Builder (ハザードライドビルダー, Hazādo Raido Birudā), a mold that clamps around Build. Inside, Progress Vapor is combined with the Transgel Solid from the inserted Fullbottles, forming the suit and armor and completing the transformation. After transformation, the Build Driver's Vortex Lever can be turned again to activate the Hazard Attack (ハザードアタック, Hazādo Atakku) finishing move. Pressing the BLD Hazard Switch again and turning the Vortex Lever activates Over Flow Mode (オーバーフローモード, Ōbāfurō Mōdo), temporarily boosting Build's Hazard Level further. Initiating a finisher a finishing move in Over Flow Mode results in the the Hazard Finish (ハザードフィニッシュ, Hazādo Finisshu).

Dubbed a "forbidden item", the Hazard Trigger dramatically improves the Rider System and allows the user to demonstrate overwhelming fighting power by boosting their Hazard Level, but at a cost. The user's brain cannot handle the stimulation of battling for an extended time, causing them to lose their reason and self-awareness. As a result, Build succumbs to destructive impulses and will relentlessly attack anyone nearby unless the Hazard Trigger is removed or his transformation is cancelled. When Evolto first gave the Hazard Trigger to Sento, he stated that the latter would be able to master it if he could raise his Hazard Level. This is later proven in Episode 35, as the time that Sento can maintain control of Hazard forms has been significantly extended.

When transforming into any other form, the Hazard Trigger is switched to Over Flow Mode before transformation. In addition to the FullFull RabbitTank Bottle eliminating the risk of Hazard Form, RabbitRabbit Form and TankTank Form allow Build to demonstrate combat abilities equal to Over Flow Mode immediately after transformation. RabbitRabbit form's finisher is the RabbitRabbit Finish (ラビットラビットフィニッシュ, Rabitto Rabitto Finisshu), and TankTank Form's finisher is the TankTank Finish (タンクタンクフィニッシュ, Tanku Tanku Finisshu).

The Hazard Trigger is also used to upgrade the Hard Smash into Hazard Smash by raising their Hazard Level. This enables them to demonstrate high combat power, but their bodies will be destroyed if they are defeated.

Like the Rider System as a whole, the true purpose as envisioned by Shinobu was to stop Evolto. By equipping the Hazard Trigger, Build Genius Form is able to purify Black Lost Fullbottles with his finishing moves, reverting them to their original state. Due to being based on the Evol-Trigger, the Hazard Trigger shares the same structure and several of its functions. In Episode 44, Shinobu Katsuragi attacks the Hazard Trigger, temporarily immobilizing him. This was Shinobu's way of telling Sento that the same tactic could be used on Evolto. In Episode 46, Ryuga Banjo, who possesses Evolto's genes, places the Hazard Trigger in the Pandora Box to create the White Pandora Panel in the same manner that Evolto created the Black Pandora Panel with the Evol-Trigger. As revealed in Kamen Rider Build: Be The One, the Hazard Trigger can also be used in place of the Evol-Trigger to destroy a planet with the Pandora Box.

History

The Hazard Trigger is initially in the possession of Blood Stalk, who tells Kazumi Sawatari that he can use it to raise the Hazard Level of the Hokuto Sanbagarasu, but at the cost of them dying should they be defeated. Kazumi refuses and leaves, but unbeknownst to him the trio were listening to the conversation and agree to undergo the procedure. After Cross-Z Charge goes out of control in battle against Grease and the Hazard Smash, Blood Stalk gives the Hazard Trigger to Sento and tells him that he will be able to stop Banjo using it.^{[The Forbidden Item]}

After brainwashing Banjo, Kengo Ino has him defeat Sento and take the Hazard Trigger. Using it along with Banjo's Build Driver and the Great Cross-Z Dragon, Ino becomes Kamen Rider Blood. Ino's plan was to have Banjo use the Hazard to destroy Earth with the Pandora Box. However, the Hazard Trigger was returned to Sento after he freed Banjo and they defeated Blood as Kamen Rider Cross-ZBuild. ^{[Kamen Rider Build: Be The One]}

Users

• Kamen Rider
• Smash

• Build
• Cross-Z
• Blood
• Metal Build

• Hazard Forms
• FullFull RabbitTank Bottle
• Genius Fullbottle

• Kamen Rider Build
  • RabbitTank Hazard Form (Build Episodes 20-21, Raising the Hazard Level ~7 Best Matches~: Final Chapter, Build 22-26)
  • SmaphoWolf Hazard Form (Raising the Hazard Level ~7 Best Matches~: First Chapter)
  • HawkGatling Hazard Form (Build Episode 22)
  • KaizokuRessya Hazard Form (Build Episode 24, 35)
  • KeyDragon Hazard Form (Build Episode 35)

RabbitTank Hazard Form

RabbitTank Hazard Form (Two Left Eye Rabbit HZs)

SmaphoWolf Hazard Form

HawkGatling Hazard Form

KaizokuRessya Hazard Form

KeyDragon Hazard Form

• Kamen Rider Build
  • RabbitRabbit Form (Build Episodes 27-36, 38-40, 45, Be The One, Build 49)
  • TankTank Form (Build Episodes 28-33, 35-36, 40, 43-44, Be The One, Build 48-49))

RabbitRabbit Form

TankTank Form

• Kamen Rider Build
  • Genius Form (Build Episode 45)

Genius Form

• Kamen Rider Cross-Z
  • Cross-Z Magma (Build Episode Episode 48)

Kamen Rider Cross-Z Magma

• Kamen Rider Blood (Kamen Rider Build: Be The One)

Kamen Rider Blood

• Kamen Rider Metal Build (Build NEW WORLD: Kamen Rider Grease)
  • Phantom Build

Kamen Rider Metal Build

Phantom Build

• Castle Hazard Smash (Build Episodes 19-21, 23-25)
• Stag Hazard Smash (Build Episodes 19-21)
• Owl Hazard Smash (Build Episodes 19-21, 23)

Castle Hazard Smash

Stag Hazard Smash

Owl Hazard Smash

Finishers

• Hazard Forms
• FullFull RabbitTank Bottle
• Genius Fulbottle
• Cross-Z Magma Knuckle

• Over Flow Mode
• Hazard Finish
• Hazard Attack

• RabbitTank
• SmaphoWolf
• HawkGatling
• KaizokuRessya

• RabbitTank Hazard Form: This finisher has two variations:
  • Build performs a series of explosive punches and kicks covered in dark purple energy and Nebula Gas.
  • Build rushes at the enemy at maximum speed.

Over Flow (RabbitTank) (Version 1) (Step 1: Punches)

Over Flow (RabbitTank) (Version 1) (Step 2: Kick)

Oveflow (RabbitTank) (Version 2)

• SmaphoWolf Hazard Form:: Build transfers surplus Nebula Gas into his HZ Deadly Gloves and delivers a powerful punch, summoning a wolf-like energy projection which "bites" down on the enemy.

Over Flow (SmaphoWolf)

• HawkGatling Hazard Form: Build performs a series of blasts with the Hawkgatlinger while flying around the enemy with the Solstall Wings.

Over Flow (HawkGatling)

• KaizokuRessya Hazard Form: Build delivers a series of punches covered in dark purple energy before grabbing the enemy and lifting them up to perform another series of punches, with the final punch saying the enemy flying

Over Flow (KaizokuRessya) (Step 1: Punches)

Over Flow (KaizokuRessya) (Step 2: Lifting enemy)

Over Flow (KaizokuRessya) (Step 3: Second series of punches)

Over Flow (KaizokuRessya) (Step 4: Enemy launched)

• Build
• Metal (Phantom) Build

• RabbitTank
• HawkGatling

• RabbitTank Hazard Form: This finisher has two variations:
  • Build grabs an enemy while both of them are surrounded by dark purple energy before shocking the opponent with blue electricity that paralyzes them. Build then performs a side kick covered in purple energy that is capable of killing the target.
  • Build performs a flying kick covered in purple energy that creates purple electricity and an energy shockwave upon impact.

Hazard Finish (RabbitTank) (Version 1) (Step 1: Grabbing enemy)

Hazard Finish (RabbitTank) (Version 1) (Step 2: Electricity)

Hazard Finish (RabbitTank) (Version 1) (Step 3: Side kick)

Hazard Finish (RabbitTank) (Version 1) (Step 4: Explosion)

Hazard Finish (RabbitTank) (Version 2) (Step 1: Flying kick)

Hazard Finish (RabbitTank) (Version 2) (Step 2: Shockwave with electricity)

• HawkGatling Hazard Form: Build delivers a upward kick covered in purple energy that launches the enemy into the air. Build is surrounded by dark purple energy while the enemy is suspended in the air within a cloud of the same energy. Build then fires a barrage of purple energy blasts at the enemy, resulting in an explosion with a purple energy shockwave.

Hazard Finish (HawkGatling) (Step 1: Upward Kick)

Hazard Finish (HawkGatling) (Step 2: Purple energy)

Hazard Finish (HawkGatling) (Step 3: Firing)

Hazard Finish (HawkGatling) (Step 4: Explosion)

• Metal Build
• Phantom Build

• Metal Build performs a roundhouse kick motion towards the opponent, creating a tank track that flies into the target and grinds against them, acting like a chainsaw. This attack can strike multiple opponents.

Hazard Finish (Metal Build) Step 1.png

Hazard Finish (Metal Build) (Step 1: Kick)

Hazard Finish (Metal Build) Step 2.png

Hazard Finish (Metal Build) (Step 2: Additional strikes)

• Phantom Build launches a volley of missiles from his back before performing two consecutive roundhouse kicks towards the opponent, creating a tank track that flies into the target.

Hazard Finish (Phantom Build) (Step 1: Missile volley)

Hazard Finish (Phantom Build) (Step 2: First kick)

Hazard Finish (Phantom Build) (Step 3: Second kick)

• Hazard Attack (ハザードアタック, Hazādo Atakku): Metal Build jumps into the air before crashing into the target with a double knee drop. He then creates an energy tank tread that grinds the enemy into the ground.

Hazard Attack (Metal Build) (Step 1: Knee drop)

Hazard Attack (Metal Build) (Step 2: On top of target)

Hazard Attack (Metal Build) (Step 3: Energy tank tread)

Build's finisher for RabbitRabbit Form is the RabbitRabbit Finish (ラビットラビットフィニッシュ, Rabitto Rabitto Finisshu): Build leaps high into the air and stretches his leg towards the opponent. Build then performs a flying kick with his extended leg, and upon contact with the enemy his leg retracts again, pulling his body towards his foot and the enemy. Once Build is in front of the enemy, his momentum results in the kick becoming much more powerful, creating a large red shockwave and sending his opponent flying.

RabbitRabbit Finish (Step 1: Jumping into the air

RabbitRabbit Finish (Step 2: Leg extension)

RabbitRabbit Finish (Step 3: Flying kick)

RabbitRabbit Finish (Step 4: Body returning to leg)

• Genius Finish (ジーニアスフィニッシュ, Jīniasu Finisshu): Build delivers a punch that creates a swirling, rainbow-colored shockwave upon impact. With the effect of Hazard Trigger, he gains the ability to negate the Pandora Panel's effects on Lost Fullbottles.

Hazard Finish + Genius Fnish (Step 1: Punch)

Hazard Finish + Genius Finish (Step 2: Lostbottle reverting)

Hazard Finish + Genius Finish (Step 3: Explosion)

• Volcanic Finish (ボルケニックフィニッシュ, Borukenikku Finisshu): Cross-Z Magma performs an enhanced version of his original Volcanic Finish. With the effect of the Hazard Trigger, he can overpower Evol's Black Hole Form for a short period of time.

Hazard Finish + Volcanic Fnish

Notes

• Being a non-collectible device that can be slotted into the main Rider's Driver to access an upgrade recalls the Genesis Driver's Core Unit that can be attached into the Sengoku Driver.
  • While it does not replace any portion of the Build Driver, it does possess the same process of modifying the "armor". However, the difference of each form is seen in the visor as the modified armor retains the same design for any form using the Hazard Trigger, with the suit's design appearing more symmetrical; similar to the Jimber Arms forms accessed by the Sengoku Driver.
    • The only other devices that impact the basic design of the suit are the Cross-Z Dragon adapter due to using one Fullbottle for the transformation, and the Cross-Z Magma Knuckle for the same reason, except its use completely alters the base suit.
      • The result of transforming with the Grease Blizzard Knuckle appears as a fusion of the Robot Halfbody and the suit and helmet design of Kamen Rider Grease's Sclash Driver form, but colored differently, with the shoulder pads displaying the symbols of Grease on one and the Hokuto Sanbagarasu' Fullbottle designs on the other.
    • It would later be enhanced with the FullFull RabbitTank Bottle, forming additional armor over the Hazard Suit.
• The aspects of being a "Forbidden Device" and being used in response to the enemy's increasing power are shared with the Ongekizofukuken Armed Saber from Kamen Rider Hibiki.
  • The comparison is further emphasized by how its combination with the FullFull RabbitTank Bottle provides additional armor as a similar indication that the form is now usable by the Rider.
• Its impact on the Rider Form's appearance and the risk of causing volatile behavior are reminiscent of the Fang Memory from Kamen Rider W. Both devices are also used to access their titular rider's super forms.
  • A key difference is that, while FangJoker's control was originally dependent on the user's compatibility with the Joker Memory, indicated by a novel, Hazard Forms only require a high Hazard Level to neutralize the side effect. This has been exemplified by weapon-wielding Super Best Matches, as opposed to the half changes with the Fang Memory possessing either the Metalshaft or the Triggermagnum.
    • While there are weapon-wielding Hazard forms, the general aspect of the finishers tend to parallel the finisher of FangJoker, where the device is utilized first to initiate the finisher and/or the finisher being an extension of the Form(Use of the HZ Vanish End Shoes/HZ Deadly Gloves and the Maximum Saber, respectively).
    • In the Futo Tantei Manga and Anime, it was shown that half changes with the Fang Memory would still produce finishers geared towards usage of the fang-based weapons, further paralleling with Hazard forms being more focused on the energy produced by the Hazard Trigger.
• The Hazard Trigger's negative effects on its user's mental state are similar to the Sclash Driver's, although the Hazard Trigger's effects are much more dangerous and uncontrollable.
  • Unlike other forms that cause Riders to go berserk, the Hazard Trigger's effects are not wild and aimless; the user loses all awareness of anything except the urge to destroy, and will fight with all their skills and no mercy.
• Hazard Form's upgrade with the FullFull RabbitTank Bottle appears as an inverse of Kuuga's Forms, where as Rising Mighty becomes Amazing Mighty by enhancing a colored Upgrade Form into a singular, black Super Form, Hazard Form gains two distinctly colored Super Forms by adding new armor to the black Hazard Suit.
  • The additional armor is similar to the Gamers for Levels 3 and onward from Kamen Rider Ex-Aid where it depicts the theme of the form before merging with the Rider.
  • The design of the armor pieces seem to stem from the shoes of the respective Half Body, noticeably with the red arrows found on the "cuff" of the Rabbit Foot Shoes being applied to both ends of the Dimension Springers and the Tank Roller Shoes being more emphasized as the Blue Tank Rollers.

Appearances

• Kamen Rider Build
  • Episode 19: The Forbidden Item
  • Episode 20: The Devil's Trigger
  • Episode 21: The Unstoppable Hazard
  • Kamen Rider Build: Raising the Hazard Level ~7 Best Matches~
    • First Chapter
    • Final Chapter
  • Episode 22: Victory of Tears
  • Episode 23: The Phantom of the West
  • Episode 24: A Man Called Rogue
  • Episode 25: The Idol Awakens
  • Episode 26: The Treacherous Deathmatch
  • Episode 27: The Counterattack Hero
  • Episode 28: The Genius Arrives With a Tank
  • Episode 29: The Opening Bell Rings
  • Episode 30: The Truth of the Pandora Box
  • Episode 31: Surging Magma!
  • Episode 32: Programmed Tragedy
  • Episode 33: The Final Weapon: Evol
  • Episode 34: The Severing Best Match
  • Episode 35: Tower of Destruction
  • Episode 36: Evolto Hunts the Stars
  • Episode 38: Mad World
  • Episode 39: The Unstoppable Genius
  • Episode 40: The Final Revolution
  • Episode 43: Another Build
  • Episode 44: The End of Evolto
  • Episode 45: The Scientist of Hope
  • Kamen Rider Build: Be The One
  • Episode 46: An Oath to Be The One
  • Episode 48: To The World of Love & Peace
  • Episode 49: The Tomorrow Build Will Create
  • Kamen Rider Build: Final Stage
  • Build NEW WORLD: Kamen Rider Grease
• Kamen Rider Heisei Generations Forever

See also

• Evol-Trigger
• Hazard Level

External links

• Kamen Rider Zukan page on the Hazard Trigger.