Build Driver

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The is the transformation device used by both Kamen Rider Build and Kamen Rider Cross-Z, and later used by Kamen Rider Grease and Kamen Rider Rogue for later additional forms.
==Overview==
The Build Driver is the first and foremost system developed as part of Project Build, using Fullbottles as its primary collectible device.http://www.tv-asahi.co.jp/build/rider/builddriver/
A Hazard Level of 3 is required to be able to transform using the Build Driver, otherwise the anti-theft security measures on the Driver will activate and electrify the user, rendering them unconscious. 
==Design==
The Build Driver is composed of the following parts:
*: The circular energy generator unit. By turning the Vortex Lever, the Vortex Charger spins, activating the internal engine, generating enough energy to transform and deal deathblows.
*: The crank used to activate and operate the Build Driver. The faster the crank is spun, the more energy is developed.
*: The slots that Fullbottles are inserted into. It takes in the Transgel Solid ingredients inside of the Fullbottles and feeds it to the Building Modules.
*: An expansion device built into the Twin Fullbottle Slots. During transformation, it develops the (or any other type of 'Builders'), a compression device resembling plastic model runners, allowing transformation to occur.
*: The outer parts. It utilises high-strength material with heat and impact resistance, allowing it to protect internal mechanisms. It is so strong that it can withstand Smash attacks.
*: The yellow strap used to fix the Build Driver upon the waist. When the Driver is not in use, it is stored inside the Driver.
*: A biometric scanning device located in the black section at the rear of the Adjust Bind. It reads Hazard Levels, and will prevent transformation to anyone lower that a Hazard Level 3.
*: A converter installed inside the Driver that converts emotions into energy. The stronger the emotions, the stronger the Rider's attacks will be. This is due to their Hazard Level increasing/decreasing depending on emotions.
==Functionality==
===Transformation===
Kamen Rider Build transforms by inserting two Fullbottles into the Build Driver's and plugging them into the . The user then turns the , a crank that generates power to the energy core generator unit by turning the lever. This gives the inside the Vortex Charge the momentum it needs to generate power for transformation and finishers. Larger amounts of energy can be generated by increasing the momentum of turning the Vortex Lever and rotation speed of the Vortex Charge.
In a rare instance for Rider Belts, in Episode 1, the inner workings of the Build Driver were seen during transformation. As the Vortex Lever and Vortex Charge turns, it moves the gears and pistons inside the belt which pump essence from the Fullbottles out of their containers through pneumatic tubes, which move out of the belt and form the base for assembly of the suit. If the user is transforming into a Best Match form, the Driver then initializes the after the essences have hardened into the Halfbodies. Afterwards, the Driver will yell out . To confirm and initiate transformation, one must give the voice command of , or (humorously, the Build Driver will also respond to replies of ).https://www.kamen-rider-official.com/dictionaries/works_search?utf8=%E2%9C%93&search_dictionaries_form%5Bkamen_rider_id=19&search_dictionaries_form%5Bicon=1&initial=%E3%81%82 Once the confirmation voice command has been given, the Snap Ride Builder will collapse onto the user, snapping the two parts together and completing the transformation. The Snap Ride Builder will not appear if the user is moving during the transformation, while in some instances, the pneumatic tubes of the Snap Rider Builder will simply appear in a quick flash so as to speed up the transformation.Production-wise, this is likely to save on the CGI budget.
The Build Driver is layered in an alloy called the , designed to resist high temperatures, high impacts of force and attacks by the Smash. As a security feature, the belt uses the fastener to do a biometric scan of its wearer to determine if the intended user has a minimum Hazard Level of 3. If it is not, the belt will not function and go into a protective shutdown state, punishing the would be wearer. If the user does, the belt will continue to operate normally.
An ideal combination of two matching Fullbottles will create a form, but any other imperfect combination is known as a . The Build Driver did not originally announce Best Matches, but was later modified to do so by Sento Kiryu.
Kamen Rider Cross-Z transforms by inserting the Dragon Fullbottle into the Cross-Z Dragon, before inserting it into the Build Driver, and turning the crank.
When transforming into Cross-Z Magma by inserting the Dragon Magma Fullbottle into the Cross-Z Magma Knuckle before inserting it into the Build Driver and turning the crank, the is summoned and pours Variable Magma over the Rider. This substance forms a casting of the Cross-Z Magma armor as numerous smoldering dragons rise up from the pool of lava. Once cooled and hardened, the Magma Ride Builder shatters the cast, releasing Cross-Z Magma.
The transformation into Grease Blizzard is mostly the same, with the North Blizzard Fullbottle being inserted into the Grease Blizzard Knuckle, the weapon inserted into the Driver, and, after turning the crank, summoning the to submerge the Rider in liquid Variable Ice. The substance hardens into a mound of ice, before the Ice Ride Builder shatters the construct to reveal Grease Blizzard.
===Finishers===
While transformed, Build/Cross-Z/Grease initiates a finishing move by turning the Vortex Lever. Build's Best Matches use the , and Build's Trial Forms use the . Cross-Z' finisher is the , later followed by Cross-Z Magma's and . Grease's brief use of the Grease Blizzard Knuckle as Grease Blizzard had used finishers known as and .
==Users (chronological order)==
User 	Kamen Rider 	Episode Obtained 	Description
Takumi Katsuragi 	Kamen Rider Build 	Pre-series 	Takumi Katsuragi created the Build Driver as part of the Rider System in Touto, Hokuto, and Seito, later became a former member of Touto Institute of Advanced Matter Physics, then later created Faust, and its founder.
His Build Driver was secretly replaced with a experimental version by Blood Stalk shortly before his supposed death, and the original one would later be used by his new identity.
Evolto/Soichi Isurugi	N/A 	The Severing Best Match 	Blood Stalk had already been in possession of an incomplete and experimental version of Build Driver for an unknown period of time by the time of Takumi Katsuragi's supposed death.
As part of his plans, Stalk took Takumi's Build Driver and replaced it with the experimental one, causing him to be unable transform into Build and reverting the Gorilla Fullbottle into its empty form, leading to his "murder". This i later modified by Shinobu Katsuragi after Takumi's memory wiping events, albeit without the "Best Match!" announcement.
Sento Kiryu 	Kamen Rider Build 	Who Takes Off The Veil? 	Sento was given Takumi's Build Driver by Evolto (under the identity of Soichi Isurugi) after being taken in by him.
Ryuga used this Driver for his first transformation and kept it for a short amount of time before Sento built a second one and gave it to him.
Misora briefly took it from him in an attempt to transform against Evolto, but it was taken from her by Gentoku to become Prime Rogue. Gentoku returned the Build Driver to Sento afterwards.
Ryuga Banjo 	Kamen Rider Cross-Z 	Burning Dragon 
----
Theory of Conspiracy	In Episode 6, Ryuga attempted to transform using Sento's Driver, but his then-low Hazard Level prevented him from doing so.
When Night Rogue stole Sento's Driver, Ryuga retrieved it and used it to successfully transform into Cross-Z. Ryuga kept Sento's Driver until Sento built another one for him in next episode. The driver was taken by Kengo Ino but was then taken back by Sento and Ryuga.
Shinobu Katsuragi 	Kamen Rider Build (Prototype) 	Legacy of Doubt 	At some point, Shinobu modified the experimental version of the Build Driver that Blood Stalk created to trick Takumi before his memory washed away, which he used to become another Kamen Rider Build. As this prototype Driver is based on the original schematics, it does not announce Best Matches. After his death, his Driver went into the possession of Sento, who hid it inside the Purifier. Kazumi would later take it for his own usage despite Sento's warnings.
Kengo Ino 	Kamen Rider Blood 	Kamen Rider Build: Be The One 	After taking the Build Driver and Great Cross-Z Dragon from Ryuga and stealing the Hazard Trigger from Sento, he used it to transform into Kamen Rider Blood. The driver is then taken back by Sento and Ryuga.
Kazumi Sawatari 	Kamen Rider Grease Blizzard 	An Oath to Be The One 	
After being given the Grease Blizzard Knuckle by Sento, Kazumi steals Shinobu Katsuragi's prototype Build Driver from Sento's lab in order to use it to transform into Grease Blizzard.
Gentoku Himuro 	Kamen Rider Prime Rogue 	Kamen Rider Prime Rogue 	
Gentoku snatched Sento's Build Driver out of Misora's hands in order to transform into Prime Rogue to fight against Evolto. Gentoku returned the Build Driver to Sento afterwards.
In the New World, Gentoku is shown with his own Build Driver that Sento created for him, which he uses to transform into Prime Rogue again to fight Down Fall.
Killbus 	Kamen Rider Build/Kamen Rider Killbus 	Build NEW WORLD: Kamen Rider Cross-Z	
After stealing the Build Driver from Sento, Killbus used it to transform into Kamen Rider Build.
Killbus subsequently stole a scientific toy Sento had invented for Ryuga to sell and modified it into the Killbuspider, allowing him to transform into Kamen Rider Killbus. After Killbus was defeated, the Build Driver was returned to Sento.
Keiji Uraga 	Kamen Rider Metal Build/Kamen Rider Phantom Build	Build NEW WORLD: Kamen Rider Grease 	
This additional Driver was created by Shinobu Katsuragi in the New World and was being shown to Simon Marcus by Gentoku Himuro when Down Fall ambushed them and stole the Driver. Keiji Uraga uses this version of the Build Driver along with the stolen Hazard Triggger (which is once again from Sento) to transform into Kamen Rider Metal Build.
Upon the defeat of Phantom Build, this Build Driver disintegrated along with Keiji.
===Kamen Riders===
*Kamen Rider Build
*Kamen Rider Cross-Z
*Kamen Rider Grease Blizzard/Perfect Kingdom (Build Episodes 46-47, Build NEW WORLD: Kamen Rider Grease)
*Kamen Rider Prime Rogue (Kamen Rider Prime Rogue, Kamen Rider Build: Final Stage, Build NEW WORLD: Kamen Rider Grease）
*Kamen Rider Blood (Kamen Rider Build: Be The One)
*Kamen Rider Killbus (Build NEW WORLD: Kamen Rider Cross-Z)
*Kamen Rider Metal Build (Build NEW WORLD: Kamen Rider Grease)
KRBu-Buildrabbittank.png|Kamen Rider Build
KRBu-Crossz.png|Kamen Rider Cross-Z
KRBu-Greaseblizzard.png|Kamen Rider Grease Blizzard
KRBu-Greaseperfectkingdom.png|Kamen Rider Grease Perfect Kingdom
KRBu-Primerogue.png|Kamen Rider Prime Rogue
KRBu-Blood.png|Kamen Rider Blood
KRBu-Killbus.png|Kamen Rider Killbus
KRBu-Metalbuild.png|Kamen Rider Metal Build
==Snap Ride Builders==
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Transformation Setups=
Rabbit Tank Snap Ride Builder.png|Build RabbitTank Form's Snap Ride Builder
GorillaMond Snap Ride Builder.png|Build GorillaMond Form's Snap Ride Builder
HawkGatling Snap Ride Builder.png|Build HawkGatling Form's Snap Ride Builder
NinninComic Snap Ride Builder.png|Build NinninComic Form's Snap Ride Builder
RocketPanda Snap Ride Builder.png|Build RocketPanda Form's Snap Ride Builder
Firehedgehog Snap Ride Builder.png|Build FireHedgehog Form's Snap Ride Builder
LionCleaner Snap Ride Builder.png|Build LionCleaner Form's Snap Ride Builder
KeyDragon Snap Ride Builder.png|Build KeyDragon Form's Snap Ride Builder
KaizokuRessya Snap Ride Builder.png|Build KaizokuRessha Form's Snap Ride Builder
OctopusLight Snap Ride Builder.png|Build OctopusLight Form's Snap Ride Builder
PhoenixRobo Snap Ride Builder.png|Build PhoenixRobo Form's Snap Ride Builder
DoctorGame Snap Ride Builder.png|Build DoctorGame Form's Snap Ride Builder
RabbitTank Sparkling Snap Ride Builder.png|Build RabbitTank Sparkling Form's Snap Ride Builder
Hazard Ride Builder.png|Build Hazard Forms' Hazard Ride Builder
Plant Ride Builder GN.png|Build Genius Form's Plant Ride Builder GN
RabbitDragon Snap Ride Builder.png|Build RabbitDragon Form's Snap Ride Builder
L & P Snap Ride Builder.png|Cross-Z Build's L & P Snap Ride Builder
Cross-Z Snap Ride Builder.png|Cross-Z's Snap Ride Builder
Magma Ride Builder.png|Cross-Z Magma's Magma Ride Builder
Great Cross-Z Snap Ride Builder.png|Great Cross-Z's Snap Ride Builder
Cross-ZEvol Snap Ride Builder.png|Cross-ZEvol's Snap Ride Builder
Ice Ride Builder.png|Grease Blizzard's Ice Ride Builder
Grease Perfect Kingdom Snap Ride Builder.png|Grease Perfect's Snap Ride Builder
Prime Ride Builder.png|Prime Rouge's Prime Ride Builder
Blood Snap Ride Builder.png|Blood's Snap Ride Builder
Killbus Snap Rider Builder.png|Killbus' Snap Ride Builder
Metal Build Hazard Ride Builder.png|Metal Build's Hazard Ride Builder
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Others=
Ryuga Failed Build Transformation 1.png|Ryuga attempts to transform into Build RabbitTank...
Ryuga Failed Build Transformation 2.png|...but unfortunately, it fails.
Build Clear Gorilla Body.png|A clear Gorilla pneumatic tube appears when Build changes from a Gorilla-based Trial Form to GorillaMond.
Build Clear Rocket Body.png|A clear Rocket pneumatic tube appears when Build changes from a Rocket-based Trial Form to RocketPanda.
Cross-ZEvol Snap Ride Builder (Original).png|Cross-ZEvol's initial Snap Ride Builder, without Evolto possessing
Snap Ride Builders dissapearing.png|Build and Cross-Z's Snap Ride Builder dissapers after their Nebula Gas being absorbed by Metal Fullbottle.
Metal Build's Phantom Liquid.png|Phantom Liquid being expelled during Kamen Rider Metal Build's Hazard Ride Builder.
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==Raise Buckle==
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: Allows any of the Geats Riders to access Build Form, It is based on Kamen Rider Build and his transformation belt, the Build Driver.
KRGe-Build Driver Buckle.png|Build Driver Buckle
==Behind The Scenes==
===Portrayal===
The voice of the Build Driver was provided by KORBY.http://www.toei.co.jp/tv/build/story/1210410_2766.html
==Notes==
*In the Build Driver toy, the slots used for the Fullbottles in Best Matches don't matter, meaning that using Bottles in Rabbit-Tank and Tank-Rabbit placements will both give RabbitTank's announcement. Using Bottles in the opposite biotic/abiotic slot hasn't been explored in the show, however.
*The idea that the Build Driver was to eventually be a mass-produced weapon for the series antagonist can be seen as an homage to the first series to have used the term "Driver" for their transformation devices, Kamen Rider 555, as they implemented a mass-produced variant of a Rider.
*Unlike the name of Wizardriver or Decadriver, Build Driver is not called "Buildriver" because it was named for the of in 1992.
*In Kamen Rider Build: Raising the Hazard Level ~7 Best Matches~, the Build Driver somehow has an SD Card slot on the right side of the driver.
**This is because the SD Card for the Build Driver contains a combat data from battles and the fighting style of his foes, as the SD Card slot is not featured in the Build Driver toy.
*The Snap Ride Builders for RabbitTank Sparkling and RabbitTank Hazard, while being unique, also represent their particular origins:
**RabbitTank Sparkling's Fullbottle creation using energy directly from the Pandora Box, and the symbol being present as part of the Snap Ride Builder.
**The Hazard Trigger being designed after a gauge for pressurized liquid containers, and the Snap (Hazard) Ride Builder appearing as an injection molding template.
*The Magma Ride Builder represents smelting, following the theme of chemistry involved in the Rider transformations, as Ryuga's stabilization of the Dragon Magma Fullbottle and the resulting transformation are similar to burning out impurities to obtain the required element.
**The Ice Ride Builder is likely based on a chemical vat for frigid materials, due to its similar design to the Magma Ride Builder.
*During the riders transformations, the Snap Ride Builders are usually gone during close up shots.
*In the Korean Dub of Kamen Rider Ex-Aid, this belt was left undubbed and translated while the Korean Dub of Kamen Rider Build has the belt dubbed (excluding the Seito bottles).
==Appearances==
==See also==
*Evol-Driver
==References==
===Footnotes===
==External links==
*Kamen Rider Zukan page on the Build Driver.
==Navigation==
ru:Драйвер Билда
Category:Transformation Gear
Category:Arsenal (Build)