Category:Smash

The Smash (スマッシュ) are a type of monster created by the experiments conducted by Faust. Sento Kiryu fights them as Kamen Rider Build and uses their essence to create more Fullbottles.

Background
The Smash are humans who have been injected with the Nebula Gas as part of Faust's experiments. Nebula Gas is able to trigger rapid and turn a human into a monster. Each Smash is the basis for an equivalent Fullbottle. A Smash has superhuman abilities, but possess little to no human consciousness.

The technology used to create the Smash is implemented in the Steam Blade. By using its Devil Steam function, it can turn any human into Smash in a more convenient way.

In order to restore the Smash back to normal humans, the Kamen Riders must defeat them and absorb the Nebula Gas into an empty Fullbottle. Misora Isurugi is known to be able to "purify" the Smash essence with her gold bracelet, which allows the Riders to use the Fullbottles with their equipment.

A side effect of the Smash transformation is short-term memory loss. It seems only humans in peak physical condition can handle the transformation into a Smash, as shown with Kasumi Ogura, who suffered from an unspecified illness; removing the Smash essence is fatal to Smashes created from frail humans. Similarly, there seems to be a limit as to how much Nebula Gas a human can absorb: Masahiro Nabeshima and Tatsuya Kishida, who both received excessive amounts of Nebula Gas, would have died from their overdoses if the Riders were too late in removing their Smash essence. (This death is fully shown with Shingo Kuwata after his second dose.)

Certain Smash forms have reappeared in either the same or stronger (Hazard) forms in multiple people.

Faust
Faust began Smash experimentation no later than 9 years after the Sky Wall Disaster. Through these experiments, numerous humans were transformed into Smash monsters after being exposed to Nebula Gas. Released to run amok, they were intended to be fought by the Kamen Riders, a potential weapons system.

A Square Smash was the first to be defeated by Sento Kiryu, who became Kamen Rider Build via the Build Driver and Fullbottles provided to him by Soichi Isurugi.

The attacking Smash ultimately became notorious enough that they were noticed by the general populace, with journalist Sawa Takigawa investigating them. She herself would be attacked by the Needle Smash, but saved when it too was defeated by Build, who freed its host by extracting the Smash essence.

Convict Ryuga Banjo was exposed to Nebula Gas, but did not become a Smash due to his high Hazard Level. Escaping the clutches of Faust, he was pursued by the Strong Smash, but was protected by Sento Kiryu, who defeated the Smash but unable to gain any information from the host Shimizu due to amnesia caused by the process.

Soona after, Ryuga's girlfriend Kasumi Ogura was kidnapped and transformed into the Burn Smash. As revealed by Faust executive Night Rogue, since Kasumi was only at Hazard Level 1, she would die should the Smash be defeated. Nevertheless, Build was ultimately forced to terminate her to end the Smash's rampage.

Reika Kine was transformed into a Flying Smash. Going on a frenzy, the Smash tried attacking Reika's son Kota before being fought back by Build. The Flying Smash was eventually defeated by Build GorillaMond, returning Reika to her human state, to the joy of her and her son.

A pawn of Faust, Masahiro Nabeshima was transformed into the Mirage Smash. On his rampage, he attacked a group of Touto Guardians and Sento, fighting Build RabbitTank by duplicating himself. After Build switched to HawkGatling and defeated him and all his duplicates, his Smash essence was extracted. However, he was taken away by Blood Stalk.

Nabeshima was injected with Nebula Gas again, transforming into a second Square Smash. He was set upon a park, coming to blows with Build once again. After fighting for some time, Blood Stalk fired upon him with his Steam Rifle, causing him to grow in size. Build proceeded to defeat him with the Full Bullet finisher, and upon having his Smash essence extracted returned to normal once again.

To lure Sento out, Blood Stalk kidnapped Tatsuya Kishida and had him turned into a Press Smash. Though Tatsuya was returned to normal by Build NinninComic Form, he soon reverted to his Smash form as Ryuga knocked Sento out to use the Smash to find Faust's secret location. The Press Smash's Hazard Level had been increased to cause his body to go haywire and almost destroyed, until Build NinninComic Form saved him during his and Ryuga's raid on Faust's secret lab.

In Hokuto, Blood Stalk used the Steam Blade's Devil Steam to transform a young boy named Takehiko into the Ice Smash. He was soon purified by Build, although the stress from transforming into a Smash put a huge toll on his body.

Kidnapped by Night Rogue, Takumi Katsuragi's mother Kyoka was transformed into the Strong Smash Hazard, first of the stronger Hazard Smash, but was freed by Build FireHedgehog Form.

Revealing himself as a Faust member, Shingo Kuwata willingly transformed into a Flying Smash by pouring an unpurified Fullbottle onto himself, becoming the Smash to fight Build and lead him away from the Touto Institute of Advanced Matter Physics so Faust could attack without his interference. He was eventually defeated by Build LionCleaner.

Exposed as a spy, Sawa was transformed into the Stretch Smash by Faust, but was pacified by Kamen Rider Cross-Z with the Smash essence extracted by Build.

Revealing himself to be Night Rogue, Gentoku Himuro transformed a pair of Touto soldiers into a Strong and Stretch Smash Hazard. They were pacified by Kamen Riders Build and Cross-Z.

Two unidentified individuals were transformed into a Press and Flying Smash Hazard, and were sent by Hokuto to run amok as part of their invasion of Touto. They were pacified by Cross-Z and Build.

The Hard Smash
Using special Faust Fullbottles, Akaba, Aoba and Kiba, originally workers of Kazumi Sawatari's farm, enlisted into Hokuto's military as the Hokuto Three Crows to repay their former employer's debt having financially supported their families. Each were able to transform into superior Hard Smash; unlike prior Smash, they would retain their free will and fight as soldiers of Hokuto. Respectively, Akaba, Aoba and Kiba became the Castle, Stag and Owl Hard Smashes, fighting alongside Kazumi as he used the Sclash Driver and Robot Sclashjelly to become Kamen Rider Grease.

Seeking greater strength to repay Kazumi, the Hokuto Three Crows volunteered to be administered with the Hazard Trigger's energy. Though granted the power of Hazard Smash, the price was that to be defeated would result in death.

Tragically, Aoba became the first of the Hard Smash to die when the Hazard Trigger was used by Sento himself to access the Hazard Form of Kamen Rider Build; the use of the device caused Sento to loses his senses and as such he did not hold back in defeating the Stag Smash Hazard.

With Hokuto's forces focused in Touto, Seito used the opportunity to invade Hokuto. Returning to defend his home, Kiba found himself overwhelmed by Seito's updated Kaisers Engine and Remocon Bro's, whom effortlessly outclassed the Hard Smash. Though Kazumi and Akaba followed to rescue Kiba, they fared no better and a gravely wounded Kiba ultimately gave his life to save Kazumi from Remocon Bro's, leaving Akaba as the last known Smash.

The Clone Smash
Through data collected from a battle between a Clone Hell Bro's and Sento Kiryu, Nariaki Utsumi developed a new breed of Smash; the Clone Smash. These Clone Smash were distinct in that they were created without the use of a human host, while lacking the intelligence of the Hard Smash; as well as that, they were more resilient as they lacked a sense of pain. The first pair, Press and Stretch, were summoned by Blood Stalk to fight Build and Grease during the battle for the Pandora Box. They were ultimately destroyed by Ryuga Banjo when he used the Cross-Z Magma Knuckle to become Cross-Z Magma.

A Strong Clone Smash was seen accompanying Utsumi before being easily destroyed by Kamen Rider Rogue.

A Flying Clone Smash and a second Strong Clone Smash were summoned by Evolto-Ryuga Banjo alongside pair of Hard Guardians against Kamen Riders Build and Grease. The two Clone Smash were eventually destroyed by Grease's Scrap Finish Rider Kick.

Other Events
To be added

Known Smash

 * Needle Smash
 * Strong Smash
 * Burn Smash
 * Flying Smash
 * Mirage Smash
 * Fang Smash
 * Square Smash
 * Press Smash
 * Ice Smash
 * Stretch Smash
 * Ice Smash (second)

Known Smash Hazard

 * Strong Smash Hazard
 * Press Smash Hazard
 * Stretch Smash Hazard
 * Strong Smash Hazard (second)
 * Press Smash Hazard (second)
 * Flying Smash Hazard

Known Hard Smash

 * Castle Hard Smash
 * Stag Hard Smash
 * Owl Hard Smash

Known Hard Smash Hazard

 * Castle Hard Smash Hazard
 * Stag Hard Smash Hazard
 * Owl Hard Smash Hazard

Known Clone Smash

 * Press Clone Smash
 * Stretch Clone Smash
 * Strong Clone Smash
 * Flying Clone Smash

Conceptions
All of the Smash are designed by Tamotsu Shinohara.