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This article is about a/an rider in Kamen Rider Build.
Sento Kiryu
SentoKiryu
Kamen Rider Build
Gender: Male
Series: Kamen Rider Build
Motif: Animals, Inanimate Objects, Vehicles, Science, Chemistry
Rider Type: Protagonist
Hero
Affiliation: Nascita
Touto Institute of Advanced Matter Physics
Faust (unwillingly, unknowingly)
Homeworld: Earth
First Appearance: That One with the Best Match
Last Appearance: TBA
Number of Episode
Appearances:
TBA (Build)
TBA (Movies)
TBA (Specials)
Full list of appearances
Actor: Atsuhiro Inukai
Kamen Rider Build
BuildProfile

"Now, shall we begin the experiment?"
―Build's catchphrase before transforming[src]

"Build Up!"
―Build's call whenever he changes forms[src]

"The law of victory is set!"
―Build's catchphrase after finding the winning match[src]

"This sucks."
―Sento's catchphrase whenever things go wrong[src]

"Well? Amazing, right? Terrific, right? I'm a Genius, right?"
―Sento praising his own work[src]

"Best Match kita!"
―Build upon discovering a Best Match[src]

"What do you think of my invention?"
―Sento whenever he's being a show off to someone.[src]

"To protect something important...I will rise up as many times as necessary! That's the Build that we created!"
―Sento's unwavering resolve to protect the innocent.[src]

Sento Kiryu (桐生 戦兎 Kiryū Sento) is a genius theoretical physicist who experiments with Fullbottles to further enhance his abilities as Kamen Rider Build (仮面ライダービルド Kamen Raidā Birudo) to fight against the evil Smash organisms. He is a man with no memory of his past, and fights to find the truth about himself. Initially believed to be someone named Taro Satou (佐藤 太郎 Satō Tarō), his true identity turned out to be someone else.

History

Early Life

Main article: Takumi Katsuragi

Sento was originally Takumi Katsuragi, a research prodigy at the Touto Institute of Advanced Matter Physics, and nicknamed the "Devil's Scientist". One of the founders of Faust, he was responsible for the creation of Smash, the Transteam System and the Rider Systems.

Katsuragi eventually had a change of heart and decided to quit Faust. Soichi Isurugi confronted him as Stalk, only for Katsuragi to reply that he had hidden his research data to expose the group. At this time, a man named Taro Satou arrived at Katsuragi's home to apply for a drug-testing job. Knocking Katsuragi out, Stalk then killed Satou before switching the two mens' faces. Now with Satou's appearance, Katsuragi had his memory wiped by Stalk, and was injected with Nebula Gas.

When Katsuragi did not become a Smash (the first person to do so), Isurugi realized that Katsuragi would be useful in gathering the rest of the Fullbottles. Isurugi smuggled Katsuragi out of Faust, making it appear that he found the amnesiac man outside of the café Nascita, Isurugi's home and front. Katsuragi was given the name Sento Kiryu and taken into Isurugi's care, hidden in the secret basement laboratory inside Nascita.

Becoming Build

Sento is given the Build Driver

Soichi gives Sento the Build Driver.

Buildfirsttransformation13

At some point after being taken in by Soichi, he was provided a Build Driver and a set of Fullbottles that Soichi "stole" from Faust. During Sento's first fight against a Smash, he had fought by-hand but was beaten to the point where he had no choice but to use the driver. Upon his first transformation, Sento defeated the Smash and headed back to Nascita, where Soichi and Misora were waiting for him. From that day on, Sento would continue being Build in order to one day uncover the mysteries surrounding his past.

The Rabbit Tank Meets Dragon

After about a year of fighting as Build, Sento had gained some notoriety as the Kamen Rider. However, Sento's search was left at a standstill, as the Smash had no memories of their own experiments upon returning to human form. Meanwhile, Soichi, growing impatient with Sento's freeloading, directed him to a mid-level job at Touto Institute of Advanced Matter Physics.

Sento's first lead came in the form of Ryuga Banjou, an ex-fighter and wanted fugitive. Alerted by Ryuga's Smash energy readings, Sento followed and eventually apprehended him. Much to his shock, Ryuga had just escaped from the labs where Sento had been experimented on, and had all his memories intact. The two were interrupted by Strong Smash, who attempted taking Ryuga away before Sento defeated it as Build. The Touto government quickly arrived and attempted to take Ryuga back into custody. Believing Ryuga's claim that he had been framed, Build helped Ryuga escape from the government, making Build a fugitive as well.That One with the Best Match

Burn Smash Incident and Meeting Night Rogue

Sento hides Ryuga in the secret lab, with Soichi scolding Sento for committing a felony. Sento explained that Ryuga was the 'best match' to his memories as they are both experimented by the same scientist group. On top of that, with exception of the location of the underground lab, Ryuga still had his memories intact. Sento deduced that Ryuga might lead him to the bat man and starts questioning him, but was put to a pause because of a Smash alert (a false trail to lure Build out).

Sento returned to discover Ryuga escaped, later discovering Ryuga's fiancé, Kasumi had been abducted as well. Ryuga choked him into unconsciousness to prevent his involvement, but managed to catch up and was too late seeing that Kasumi was already transformed into Burn Smash. Then Night Rogue appeared, where Sento fought to demand answers for his experimentation, but responded that he cared less about every human subject his affiliation experimented. Night Rogue disappeared after delivering the bad news: Kasumi's body was too weak to be restored, and removing her Smash essence would be fatal. Realizing that Kasumi cannot be saved despite Ryuga's pleas, Sento calculated the only way to end her suffering by separating her consciousness long enough for her and Ryuga to say their goodbyes. Ryuga broke down with grief with nothing left to fight for until Sento reminded him Kasumi's life will be for nothing if he gave up and surrender. Sento returned to the lab where Ryuga followed thanked him for the latter, and deciding to cooperate in discovering the truth behind the scientists.

The Innocent Runaway

Mirage Smash and Blood Stalk

With the help of Sawa Takigawa, a journalist who had deduced Build's identity, the group determined the identity of the man who set up Ryuga and attacked him in prison: Masahiro Nabeshima. Pausing the search to take down the Flying Smash, Sento used the extracted essence to create the Taka Fullbottle. Meanwhile, having obtained Nabeshima's contact information, Ryuga began heading west to Seito with Sawa. Saving Ryuga from a group of Guardians, Sento advised him not to mistake justice for revenge before being attacked by the Mirage Smash. Build neutralized it only to find that the Smash was Nabeshima. Before he had time to react, he was poisoned by Blood Stalk and fell unconscious.

Sento awoke in Nascita's basement, having allegedly been saved by Isurugi.

to be completed

Uncovering Faust

Once again at a dead end, Sento decided to examine Katsuragi's research notes, finding a message to Katsuragi's mother Kyoka in the final one. Escaping another attack from Rogue and Stalk (mainly because Stalk's interference), Sento and Ryuga snuck to Hokuto to speak with Kyoka.

to be completed

Blood Stalk Revealed

"Just now...the Soichi Isurugi I knew died."
―Sento severs his ties with Soichi after learning his true nature.[src]

On the night that Ryuga became Cross-Z officially, Sento was called by Nabeshima, who had regained his memories. Nabeshima revealed he had framed Ryuga on Stalk's orders, and that Isurugi was Stalk. Shaken by this discovery, Sento secluded himself in the basement until Isurugi returned. While reluctant to believe Isurugi was Stalk, Sento created counterfeit Fullbottles to be safe. When confronted with his odd behavior, Sento told them what Nabeshima told him, with the exception of Stalk's true identity.

To test Nabeshima's claim, Sento had Misora purify the Octopus Fullbottle in secret. On a tip from Gentoku, Sento and Ryuga raided a building for Nanba Heavy Industries, where the Pandora Box was being held. Confronted by Stalk, Build and Cross-Z were unable to match Stalk until Sento used the newest Best Match: OctopusLight. Unfamiliar with a Best Match he had never seen, Stalk was easily defeated, confirming Sento's suspicions. The Pandora Box was brought to Nascita, where the group celebrated with dinner. In the middle of the night, Isurugi snatched the Pandora Box, its panel, and the Fullbottle decoys. Before he could leave, Isurugi was confronted by Sento, who had been waiting for him upstairs. After initially running away, Isurugi admitted his ruse and transformed into Stalk to fight.

During the night battle, an essence of Paradox fell into one of Sento's empty bottles and decides to infuse it with the Best Match from a pair of 10 pairs existence after researching on how to use it, resulting on RabbitTank which would be infused after RocketPanda, GorillaMond, and LionCleaner proved to be failure with Ryuga to be the one who tested them all. Sento later challenged Isurugi again, almost to be defeated because of being reluctant until Ryuga came to his aid after distracting Misora by a sudden dating distraction plan from Sento. After Ryuga had lost instead, Isurugi told Sento and Ryuga that the Kamen Rider project is nothing more than a weaponry project and not for becoming heroes of justice. Isurugi also told Sento that he, Misora, and Ryuga were only pawns for the fruition of his plans. Angered, Sento used RabbitTank Sparkling, his completed upgrade, to defeat Stalk and take back the Pandora Box. Isurugi told Sento to search on Takumi's hidden project and claimed that Sento definitely able to finish it and telling that Night Rogue is Gentoku before bidding farewell.

Learning his Past

Sento and Ryuga promptly confronted Gentoku, attempting to get a confession. While Gentoku fought them both off, he advised Sento to look up "Sclash" in Project Build. This hint led Sento to the Sclash Project, the evolution of Project Build. In an excited frenzy, Sento finished the necessary computations within a night. Unbeknownst to Sento, this had been set up by Isurugi as he sneaked into his cafe and copied the data before leaving.

When Gentoku faced and lost against Rabbit Tank Sparkling, Gentoku revealed that Sento was actually Takumi and explained how everything had been set up by Isurugi from behind the scenes.

Overcoming his Guilt

"This sucks. Having you criticize me...I remember now. I...am a narcissistic-ego driven...hero of justice!"
― Encouraged by Ryuga, Sento regains his confidence as a Kamen Rider.[src]

Sento became overridden with guilt due to Gentoku's words, working silently on the Sclash Driver. Ryuga rushes towards in front of him, knocking over the unfinished driver and addresses Sento that he's responsible for his girlfriend's death and all the people who became Smash. Sento demanded what Rygua wanted, and he replied to fight. As Ryuga gains the upper hand, Sento recalls past events that enforces his true identity as Takumi, until Ryuga notices he wasn't fighting seriously. Obliging to Ryuga's demand to fight for real, Sento changed into RabbitTank Sparkling and finished Ryuga with a Rider Kick. After the battle, Sento shows remorse for his crimes as Takumi and leaves a conflicted Ryuga with Misora watching on.

Hokuto Invasion

Personality

"Me and him...We fought to become strength for others. To protect people...we kept rising back up. Even without you...I still have people to protect. For the justice I believe in...I will defeat you!"
―Sento proving his justice to Blood Stalk.[src]

Sento is a highly intelligent and sarcastic young man: He likes to praise himself for his works, and has a somewhat child-like curiosity when learning new things, such as when he first sees the Pandora Box. Additionally, when he gets excited, a part of his hair sticks up. On the other hand, Sento is generally composed and calm while fighting.

But when Sento is not composed, he immediately rushes to settle things as seen when he finally met Night Rogue, even telling that he didn't care to know his name when Night Rogue introduced himself, and attacking Night Rogue carelessly. However, rage also enabled Sento to bring his ability as Build to higher potential, shown when he single-handedly managed to injure Blood Stalk.

Despite his eccentricity, Sento is a honorable hero. During his job as Build, he always upholds heroism without expecting anything in return.

Sento has a couple of catchphrases. Before he transforms, he says "Now, shall we begin the experiment?" (さあ、実験を始めようか? Sā, jikken o hajimeyou ka?). After transforming, he says "The law of victory is set." (勝利の法則は決まった Shōri no hōsoku wa kimatta).

Powers and Abilities

  • Hazard Level 3 Physiology: Sento has undergone an experiment from Faust which injected him with a certain amount of Nebula Gas. However, instead of mutating into a Smash, the gas retained his body without side affects aside from memory loss. As result, his initial Hazard Level starts at Level 3, where subjects like him can utilize the Build Driver to transform into Kamen Rider Build. Later, his Hazard level riseto 3.7 due to his anger during the battle against Blood Stalk. After continuous usage of Rabbit Tank Sparkling Fullbottle, His Hazard level is currently at 3.9
  • Genius-Level Intellect: Sento's most defining trait is his intelligence. He has an advanced knowledge of physics, and developed several of Build's accessories on his own.
    • Genius Physicist: Sento has an advanced knowledge of physics, having finished a difficult physics test with perfect results. This proves a significant asset in battle, which Sento incorporates into his fighting technique.
    • Genius Engineer: Sento has built the majority of Build's accessories, as well as all of Cross-Z's equipment, on his own.
    • Strategist: Sento has shown him to be a capable strategist, being able to outwit even Blood Stalk on two occasions.
  • Fullbottle Augmentation: By using a Fullbottle in his hand without transforming, Sento can gain abilities based on said Fullbottle's traits:
    • Rabbit: Allows Sento to gain fast reflexes. First used to defeat Ryuga Banjou in a one-on-one fight.
    • Gorilla: Allows Sento to perform fiery punches. First used to fight Ryuga Banjou.

Weaknesses

  • Narcissism: Sento has overwhelming confidence in his own skills, so he tends to be proud of his own achievements and look down on others (especially anyone who relies on his inventions), which contributes to his prideful personality. Sento often relies on his own skills to solve problems and never expects sudden assistance from others, so when it happens, he tends to either be surprised or turns them down. Also Sento can be easily caught off guard when he accomplishes anything or witnesses something unexpected and new which excites him, because of his reliance on his intellect. In this state, he is vulnerable to any surprise attacks.
  • Desperate Curiosity: Sento can be easily attracted to anything that is mysterious and interesting and tends to do a total discovery for it, such as new innovations and anything that brings him closer to uncovering his past. This will continue until either he reaches a conclusion or someone forcibly stops him during progress.
  • Dragon Fullbottle: As seen in episode 10, Sento's body cannot handle the Dragon Fullbottle's power as he transforms into Build KeyDragon, which causes him to be electrified by the energy surges and experiences intense pain. Further use of the Dragon Bottle causes his body to be engulfed in flame-like energy which hurts him even more and forcibly knocks Sento out of transformation. This was because of Ryuga's Hazard Level 3 better synchronizing with the Dragon Full Bottle from prolonged use and exposure to its energy, while Sento had never used it before and lacked that immunity.
    • Dragon Jelly: As seen in episode 18, Sento is incapable of using this item as it sends painful shocks through his body after being inserted into the Sclash Driver. Later, it was revealed that Sento Hazard level is still lacking as minimum Hazard level to use Sclash Driver is 4.0

Forms

Sento sets two different Fullbottles into the Build Driver and turns the crank to transform into Kamen Rider Build. Kamen Rider Build, like Kamen Riders Double and OOO before him, can assume a variety of different forms, called Trial Forms (トライアルフォーム Toraiaru Fōmu), using different combinations of Fullbottles. However, each one has a Best Match (ベストマッチ Besuto Matchi) with another Fullbottle that creates an especially powerful form. Best Matches usually have unique names in comparison to other mismatched forms, and the caps of Fullbottles indicate what Fullbottle is its Best Match.

Build initiates a finishing attack by turning the Build Driver's Vortex Crank again. The finisher of all Trial Forms is called the Vortex Attack (ボルテックアタック Borutekku Atakku), while the finisher of all Best Matches is called the Vortex Finish (ボルテックフィニッシュ Borutekku Finisshu).

In any form that uses the Rabbit Fullbottle, Build is armed with the Rabbit Foot Shoes (ラビットフットシューズ Rabitto Futto Shūzu) on his left leg for increased jumping, and can summon the Drill Crusher.

RabbitTank Form
KRBu-Buildrabbittank

RabbitTank Form

"Rabbit! Tank! Best Match! Are you Ready? Hagane no Moonsault! RabbitTank! Yeahhh!"
―RabbitTank's transformation announcement[src]

Rider Statistics

  • Rider Height: 196.0 cm
  • Rider Weight: 99.0 kg

Ability Perimeters:

  • Punching Power: 9.9 tons (right arm)/17.0 tons (left arm)
  • Kicking Power: 23.7 tons (right leg)/17.8 tons (left leg)
  • Maximum Jump Height: 55.0 m
  • Maximum Running Speed: 100 m. per 2.9 sec.

RabbitTank Form (ラビットタンクフォーム Rabitto Tanku Fōmu) is Build's red and blue primary and default Best Match form form accessed from the Rabbit and Tank Fullbottles, hence known as the Moonsault of Steel (鋼のムーンサルト Hagane no Mūnsaruto). It is themed after a rabbit and a tank.

RabbitTank is considered to be the most well balanced; having a good amount of power and agility in all of his Ability Perimeters, thus making it Build's default form, despite it being capable of initiating transformation with any set of Build's Fullbottles. This is also Build's second fastest form.

In this Best Match form, Build is armed with the Tank Roller Shoes (タンクローラーシューズ Tanku Rōrā Shūzu) on his right leg for kicking attacks, and can also act as a working tread to roll along on a flat foot.

This form's weapon is the Drill Crusher.

As a Best Match, this form has two finishers:

  • Build Driver finisher:
    • Vortex Finish (ボルテックフィニッシュ Borutekku Finisshu): Build dives underground to send a white energy chart flying up to the surface with the dotted line securing the enemy before leaping back up, and delivering a kick whilst riding the chart's line. According to Blood Stalk, this finisher has a Hazard Level of 3.2, and then 3.7 when Build attacks him out of anger.
  • Drill Crusher finisher:
    • Vortex Break (ボルテックブレイク Borutekku Bureiku):
      • Blade: Build channels the energy of a Fullbottle in his Drill Crusher and performs a powerful slash.
        • Organic:
          • Rabbit: The Drill Spiral Blade spins such that it creates an energy whirlpool before Build performs a red energy slash.
          • Gorilla: The Drill Spiral Blade cloaks itself in an energy projection that bears a striking resemblance to the Muscle Glove.
          • Ninjya: Purple energy Drill Spiral Blades are projected and spin violently around the Drill Crusher.
        • Inorganic:
          • Rocket: The Drill Crusher charges at the enemy and attacks like a rocket.
      • Gun: Build channels the energy of a Fullbottle in his Drill Crusher and performs a powerful blast.
        • Harinezumi: Build shoots white energy spikes at the enemy.

Appearances: Build Episodes 1-2, Transformation Lessons: Kamen Rider Build Chapter, Build 3, 5-7, 10, 13 (flashback), 14, Heisei Generations FINAL: Build & Ex-Aid with Legend Riders, Build 15-17, Birth! KumaTelevi!! VS Kamen Rider Grease![1]

RabbitSoujiki Form
KRBu-Buildrabbitsoujiki

RabbitSoujiki Form

"Rabbit! Soujiki! Are you Ready?"
―RabbitSoujiki's transformation announcement[src]

Rider Statistics

  • Rider Height: 196.0 cm
  • Rider Weight: 93.7 kg

Ability Perimeters:

  • Punching Power: 7.9t (right arm)/5.7t (left arm)
  • Kicking Power: 9.6t (right leg)/14.2t (left leg)
  • Maximum Jump Height: 38.4m
  • Maximum Running Speed: 100m. per 3.9 sec

RabbitSoujiki Form (ラビット掃除機フォーム Rabitto Sōjiki Fōmu) is Build's red and turquoise Trial Form accessed through the Rabbit and Soujiki Fullbottles, themed after a rabbit and a vacuum cleaner.

In this Trial Form, Build is armed with the Long Range Cleaner (ロングレンジクリーナー Rongu Renji Kurīnā) on his left arm that can suck things in with high-velocity winds, and the Trash Converter (トラッシュコンバーター Torasshu Konbātā) on his left shoulder that stores what has been sucked in.

This Trial Form gives Build the ability to absorb any elemental attacks using the Long Range Cleaner, and safely disarm the accumulated attack using the Trash Converter. However, this comes at the cost of all of his Ability Perimeters being decreased from RabbitTank.

As a mismatched form, this form's finisher is the Vortex Attack (ボルテックアタック Borutekku Atakku).

Appearances: Build Episode 2

RabbitGatling Form
KRBu-Buildrabbitgatling

RabbitGatling Form

"Rabbit! Gatling! Are you Ready?"
―RabbitGatling's transformation announcement[src]

Rider Statistics

  • Rider Height: 196.0 cm
  • Rider Weight: 95.0 kg

Ability Perimeters:

  • Punching Power: 7.9 t (right arm)/8.0 t (left arm)
  • Kicking Power: 10.8 t (right leg)/14.2 t (left leg)
  • Maximum Jump Height: 37.7m
  • Maximum Running Speed: 100m. per 6.2 sec

RabbitGatling Form (ラビットガトリングフォーム Rabitto Gatoringu Fōmu) is Build's red and gray Trial Form accessed through the Rabbit and Gatling Fullbottles, themed after a rabbit and a gatling gun.

In this Trial Form, Build is armed with the Hawk Gatlinger and Drill Crusher.

As a mismatched form, this form's finisher is the Vortex Attack (ボルテックアタック Borutekku Atakku).

Appearances: Build Episode 4

Trial Forms
"Rabbit! (Inorganic Fullbottle name)! Are you Ready?"
―Trial Forms' transformation announcement[src]

As mismatched forms, the finisher is the Vortex Attack (ボルテックアタック Borutekku Atakku).

These forms have yet to appear in any episode, movie, or special.



In any form that uses the Gorilla Fullbottle, Build is armed with the Muscle Glove (マッスルグローブ Massuru Gurōbu) on his right arm for enhanced punching.

GorillaMond Form
KRBu-Buildgorillamond

GorillaMond Form

"Gorilla! Diamond! Best Match! Are you Ready? Kagayaki no Destroyer! GorillaMond! Yeahhh!"
―GorillaMond's transformation announcement[src]

Rider Statistics

  • Rider Height: 189.0 cm
  • Rider Weight: 112.0 kg

Ability Perimeters:

  • Punching Power: 25.9 tons (right arm)/15.8 tons (left arm)
  • Kicking Power: 17.3 tons (right leg)/16.5 tons (left leg)
  • Maximum Jump Height: 32.5 m
  • Maximum Running Speed: 100 m. per 8.4 sec.

GorillaMond Form (ゴリラモンドフォーム Goriramondo Fōmu) is Build's brown and cyan second Best Match form accessed from the Gorilla and Diamond Fullbottles, hence known as the Shining Destroyer (輝きのデストロヤー Kagayaki no Desutoroyā). It is themed after a gorilla and a diamond.

In this Best Match form, Build is armed with the BLD Prism Glove (BLDプリズムグローブ BLD Purizumu Gurōbu) on his left hand.

GorillaMond shows an increase in power, as the Punching Power of Build is significantly higher than in RabbitTank, albeit with a slightly decreased amount in its left arm, but it lacks Kicking Power and agility compared to RabbitTank. His left arm can convert inorganic objects, or even weakened enemies, into diamonds.

As a Best Match, this form's finisher is the Vortex Finish (ボルテックフィニッシュ Borutekku Finisshu): This finisher has two variations:

  • Build uses the BLD Prism Glove creates a gust full of diamonds and uses the Muscle Glove to punch them at the enemy. The diamond then creates a tornado that causes a human to separate from his/her Smash form, then Build punches the Smash inside the tornadoes, thereby defeating the Smash.
  • Build stops an enemy's projectile attack in mid-air with the BLD Prism Glove, altering the projectiles' atomic structure into a diamond shield. He then punches the shield with the Muscle Glove, shattering it and sending the shards flying at the enemy at high speeds.

Appearances: Build Episode 2, Transformation Lessons: Kamen Rider Build Chapter, Build 3-4, 6, Heisei Generations FINAL: Build & Ex-Aid with Legend Riders[2]

GorillaSoujiki Form
KRBu-Buildgorillasoujiki

GorillaSoujiki Form

"Gorilla! Soujiki! Are you Ready?"
―GorillaSoujiki's transformation announcement[src]

Rider Statistics

  • Rider Height: 189.0 cm
  • Rider Weight: 111.7 kg

Ability Perimeters:

  • Punching Power: 20.7 tons (right arm)/5.7 tons (left arm)
  • Kicking Power: 9.6 tons (right leg)/13.2 tons (left leg)
  • Maximum Jump Height: 26.5 m
  • Maximum Running Speed: 100 m. per 6.2 sec.

GorillaSoujiki Form (ゴリラ掃除機フォーム Gorira Sōjiki Fōmu) is Build's brown and turquoise Trial Form accessed through the Gorilla and Soujiki Fullbottles, themed after a gorilla and a vacuum cleaner.

In this Trial Form, Build is armed with the Long Range Cleaner (ロングレンジクリーナー Rongu Renji Kurīnā) on his left arm that can suck things in with high-velocity winds, and the Trash Converter (トラッシュコンバーター Torasshu Konbātā) on his left shoulder that stores what has been sucked in.

As a mismatched form, this form's finisher is the Vortex Attack (ボルテックアタック Borutekku Atakku).

Appearances: Build Episode 3

GorillaRocket Form
KRBu-Buildgorillarocket

GorillaRocket Form

"Gorilla! Rocket! Are you Ready?"
―GorillaRocket's transformation announcement[src]

Rider Statistics

  • Rider Height: 189.0 cm
  • Rider Weight: 115.0 kg

Ability Perimeters:

  • Punching Power: 20.7 tons (right arm)/11.6 tons (left arm)
  • Kicking Power: 13.5 tons (right leg)/13.2 tons (left leg)
  • Maximum Jump Height: 32.5 m
  • Maximum Running Speed: 100 m. per 9.1 sec.

GorillaRocket Form (ゴリラロケットフォーム Gorira Roketto Fōmu) is Build's brown and light blue Trial Form accessed through the Gorilla and Rocket Fullbottles, themed after a gorilla and a rocket.

In this Trial Form, Build is armed with the Space Ride Arm (スペースライドアーム Supēsu Raido Āmu) on his left arm that can fly off as a rocket and ram the opponent, and let him fly.

As a mismatched form, this form's finisher is the Vortex Attack (ボルテックアタック Borutekku Atakku).

Appearances: Build Episode 8

Trial Forms
"Gorilla! (Inorganic Fullbottle name)! Are you Ready?"
―Trial Forms' transformation announcement[src]

As mismatched forms, the finisher is the Vortex Attack (ボルテックアタック Borutekku Atakku).

These forms have yet to appear in any episode, movie, or special.



In any form that uses the Taka Fullbottle, Build is armed with the Solstall Wings (ソレスタルウィング Soresutaru Wingu) that grant him the ability to fly. He may also be able to summon the Hawk Gatlinger like other Trial Forms and their Best Match weapons, but this is yet unconfirmed.

HawkGatling Form
KRBu-Buildhawkgatling

HawkGatling Form

Kamen Rider Build HawkGatling Form (Extended Wings)

Extended wings

"Taka! Gatling! Best Match! Are you Ready? Tenkuu no Abarenbou! HawkGatling! Yeahhh!"
―HawkGatling's transformation announcement[src]

Rider Statistics

  • Rider Height: 193.0 cm
  • Rider Weight: 107.0 kg

Ability Perimeters:

  • Punching Power: 9.7 tons (right arm)/10.0 tons (left arm)
  • Kicking Power: 13.5 tons (right leg)/14.2 tons (left leg)
  • Maximum Jump Height: 41.7 m
  • Maximum Running Speed: 100 m. per 5.8 sec.

HawkGatling Form (ホークギャトリングフォーム Hōku Gatoringu Fōmu) is Build's orange and gray Best Match form accessed with the Taka and Gatling Fullbottles, hence known as the Rampage of the Skies (天空の暴れん坊 Tenkū no Abarenbō). It is themed after a hawk and a gatling gun.

While this Best Match has low stats compared to RabbitTank, this is made up for by the Solstall Wings on his back which grant him flight capabilities, as well as the utilization of the Gatling Fullbottle's Hawk Gatlinger that was designed for this particular Best Match.

As a Best Match, this form has two finishers:

  • Build Driver finisher:
    • Vortex Finish (ボルテックフィニッシュ Borutekku Finisshu).
  • Hawk Gatlinger finisher:
    • Full Bullet (フルブレット Furu Buretto): Build spins the Revol-Magazine ten times causing the gun to surround itself and its wielder with a white energy spherical graph that traps all enemies in mid-air before firing upon them all.

Appearances: Build Episodes 3-5, 8-10, 13, Heisei Generations FINAL: Build & Ex-Aid with Legend Riders, Build 16, 20

Trial Forms
"Taka! (Inorganic Fullbottle name)! Are you Ready?"
―Trial Forms' transformation announcement[src]

As mismatched forms, the finisher is the Vortex Attack (ボルテックアタック Borutekku Atakku).

These forms have yet to appear in any episode, movie, or special.



In any form that uses the Ninjya Fullbottle, Build wields the 4Koma Ninpoutou. It also grants Build the Onmitsu Scarf (オンミツスカーフ Onmitsu Sukāfu) on the right side of his back.

NinninComic Form
KRBu-Buildninnincomic

NinninComic Form

"Ninjya! Comic! Best Match! Are you Ready? Shinobi no Entertainer! NinninComic! Yeahhh!"
―NinninComic's transformation announcement[src]

Rider Statistics

  • Rider Height: 194.0 cm
  • Rider Weight: 90.5 kg

Ability Perimeters:

  • Punching Power: 11.1 t (right arm)/8.8 t (left arm)
  • Kicking Power: 10.1 t (right leg)/22.2 t (left leg)
  • Maximum Jump Height: 45.4 m
  • Maximum Running Speed: 100m. per 4.2 sec

NinninComic Form (ニンニンコミックフォーム Ninnin Komikku Fōmu) is Build's purple and yellow Best Match form accessed with the Ninjya and Comic Fullbottles, hence known as the Stealthy Entertainer (忍びのエンターテイナー Shinobi no Entāteinā). It is themed after a ninja and a comic book.

This form grants Build well-balanced abilities akin of RabbitTank. Furthermore, it has increased kicking and punching power with the cost of jumping power and speed. The 4Koma Ninpoutou was designed for this particular Best Match. This is also Build's fourth fastest form.

As a Best Match, this form has several finishers:

  • Build Driver finisher:
    • Vortex Finish (ボルテックフィニッシュ Borutekku Finisshu)
  • 4Koma Ninpoutou finishers:
    • Clone Jutsu (分身の術 Bunshin no Jutsu, Art of Cloning): Build presses the Vortex Trigger one time and creates a number of clones of himself that attack together.
    • Fire Jutsu (火遁の術 Katon no Jutsu, Art of Fire Releasing): Build presses the Vortex Trigger two times and delivers a flaming slash attack. While performing this attack, the 4Koma Ninpoutou announces Blazing Slash (火炎斬り Kaen Giri).
    • Wind Jutsu (風遁の術 Fūton no Jutsu, Art of Wind Releasing): Build presses the Vortex Trigger three times and creates a tornado around the blade. While performing this attack, the 4Koma Ninpoutou announces Tornado Slash (竜巻斬り Tatsumaki Giri).
    • Stealth Jutsu (隠れ身の術 Kakuremi no Jutsu, Art of Camouflage): Build presses the Vortex Trigger four times and teleports a short distance away in a puff of smoke. While performing this attack, the 4Koma Ninpoutou announces Doron (ドロン Doron, lit. "Abscond"), with a heavy drumbeat when he disappears and reappears.

Appearances: Build Episodes 5-7, 9, 12-13, Heisei Generations FINAL: Build & Ex-Aid with Legend Riders[3], Build 16, 20, Birth! KumaTelevi!! VS Kamen Rider Grease![4]

NinjyaTank Form
KRBu-Buildninjyatank

NinjyaTank Form

"Ninjya! Tank! Are you Ready?"
―NinjyaTank's transformation announcement[src]

Rider Statistics

  • Rider Height: 194.0 cm
  • Rider Weight: 101.1 kg

Ability Perimeters:

  • Punching Power: 8.9 t (right arm)/13.6 t (left arm)
  • Kicking Power: 19.0 t (right leg)/17.8 t (left leg)
  • Maximum Jump Height: 32.3 m
  • Maximum Running Speed: 100m. per 2.3 sec

NinjyaTank Form (忍者タンクフォーム Ninja Tanku Fōmu) is Build's purple and blue Trial Form accessed through the Ninjya and Tank Fullbottles, themed after a ninja and a tank.

In this Trial Form, Build is armed with the Tank Roller Shoes (タンクローラーシューズ Tanku Rōrā Shūzu) on his right leg for kicking attacks, and can also act as a working tread to roll along on a flat foot, as well as the Drill Crusher.

As a mismatched form, this form's finisher is the Vortex Attack (ボルテックアタック Borutekku Atakku).

Appearances: Build Episode 6

Trial Forms
"Ninjya! (Inorganic Fullbottle name)! Are you Ready?"
―Trial Forms' transformation announcement[src]

As mismatched forms, the finisher is the Vortex Attack (ボルテックアタック Borutekku Atakku).

These forms have yet to appear in any episode, movie, or special.



In any form that uses the Panda Fullbottle, Build is armed with the Giant Scratcher (ジャイアントスクラッチャー Jaianto Sukuracchā) claws on his right hand.

RocketPanda Form
KRBu-Buildrocketpanda

RocketPanda Form

"Panda! Rocket! Best Match! Are you Ready? Buttobi Monotone! RocketPanda! Yeahhh!"
―RocketPanda's transformation announcement[src]

Rider Statistics

  • Rider Height: 189.0 cm
  • Rider Weight: 114.0 kg

Ability Perimeters:

  • Punching Power: 18.8 t (right arm)/14.5 t (left arm)
  • Kicking Power: 16.9 t (right leg)/15.4 t (left leg)
  • Maximum Jump Height: 43.6 m
  • Maximum Running Speed: 100m. per 8.5 sec

RocketPanda Form (ロケットパンダフォーム Roketto Panda Fōmu) is Build's snow white and light blue Best Match form accessed with the Rocket and Panda Fullbottles, hence known as the Flying Monotone (ぶっ飛びモノトーン Buttobi Monotōn). It is themed after a panda and a rocket.

In this Best Match form, Build is armed with the Space Ride Arm (スペースライドアーム Supēsu Raido Āmu) on his left arm that can fly off as a rocket and ram the opponent, and let him fly.

This form grants Build a balanced boost in punching, kicking and jumping power, albeit his speed is the slowest of all forms so far.

As a Best Match, this form's finisher is the Vortex Finish (ボルテックフィニッシュ Borutekku Finisshu): Build surrounds the enemy with a white, oval-shaped energy chart, then uses the Space Ride Arm to fly at the enemy and performs a series of slashes with the Giant Scratcher. The chart goes up as Build continues to slash the enemy.

Appearances: Build Episode 7-8, 15, 18

PandaGatling Form
KRBu-Buildpandagatling

PandaGatling Form

"Panda! Gatling! Are you Ready?"
―PandaGatling's transformation announcement[src]

Rider Statistics

  • Rider Height: 189.0 cm
  • Rider Weight: 112.0 kg

Ability Perimeters:

  • Punching Power: 15.0 t (right arm)/8.0 t (left arm)
  • Kicking Power: 10.8 t (right leg)/12.3 t (left leg)
  • Maximum Jump Height: 26.6 m
  • Maximum Running Speed: 100m. per 8.6 sec

PandaGatling Form (パンダガトリングフォーム Panda Gatoringu Fōmu) is Build's snow white and gray Trial Form accessed through the Panda and Gatling Fullbottles, themed after a panda bear and a gatling gun.

In this Trial Form, Build is armed with the Hawk Gatlinger.

As a mismatched form, this form's finisher is the Vortex Attack (ボルテックアタック Borutekku Atakku).

Appearances: Build Episode 7

Trial Forms
"Panda! (Inorganic Fullbottle name)! Are you Ready?"
―Trial Forms' transformation announcement[src]

As mismatched forms, the finisher is the Vortex Attack (ボルテックアタック Borutekku Atakku).

These forms have yet to appear in any episode, movie, or special.



In any form that uses the Harinezumi Fullbottle, Build is armed with the Spine Knuckle (スパインナックル Supain Nakkuru) on his right fist, allowing him to clobber foes with spikes that extend outwards when used. When first used after transforming, the spines notably appear to fly in from the surroundings to the Spine Knuckle, only extending from it on subsequent attacks.

FireHedgehog Form
KRBu-Buildfirehedgehog

FireHedgehog Form

"Harinezumi! Shoubousha! Best Match! Are you Ready? Rescue Kenzan! FireHedgehog! Yeahhh!"
―FireHedgehog's transformation announcement[src]

Rider Statistics

  • Rider Height: 190.0 cm
  • Rider Weight: 103.7 kg

Ability Perimeters:

  • Punching Power: 13.7 tons (right arm)/11.9 tons (left arm)
  • Kicking Power: 14.7 tons (right leg)/14.0 tons (left leg)
  • Maximum Jump Height: 36.5 m
  • Maximum Running Speed: 100 m. per 6.4 sec.

FireHedgehog Form (ファイヤヘッジホッグフォーム Faiya Hejjihoggu Fōmu) is Build's white and scarlet-colored Best Match form accessed from the Harinezumi and Shoubousha Fullbottles, hence known as the Rescue Kenzan (レスキュー剣山 Resukyū Kenzan). It is themed after a hedgehog and a fire engine.

In this Best Match form, Build is armed with the Multi Deluge Gun (マルチデリュージガン Maruchi Deryūji Gan) on his left arm that can shoot water, fire, or extend.

This form give build balanced boost in punching, kicking and jumping power, albeit at the cost of his running speed.

As a Best Match, this form's finisher is the Vortex Finish (ボルテックフィニッシュ Borutekku Finisshu): Build extends the Multi Deluge Gun and uses it to stab the enemy, then fills them up with water and surrounds them with a white energy chart before jumping up such that he's perpendicular with the ground, then dropping down, and punching the enemy with the Spine Knuckle.

Appearances: Build Episode 8, 10, 15, 19

HarinezumiTank Form
KRBu-Buildharinezumitank

HarinezumiTank Form

"Harinezumi! Tank! Are you Ready?"
―HarinezumiTank's transformation announcement[src]

Rider Statistics

  • Rider Height: 194.0 cm
  • Rider Weight: 102.7 kg

Ability Perimeters:

  • Punching Power: 11.0 tons (right arm)/13.6 tons (left arm)
  • Kicking Power: 19.0 tons (right leg)/11.2 tons (left leg)
  • Maximum Jump Height: 28.4 m
  • Maximum Running Speed: 100 m. per 7.0 sec.

HarinezumiTank Form (ハリネズミタンクフォーム Harinezumi Tanku Fōmu) is Build's white and blue Trial Form accessed through the Harinezumi and Tank Fullbottles, themed after a hedgehog and a tank.

Compared to RabbitTank, this Trial Form has a stronger amount of Punching Power in its right arm, while being weaker in the left. The rest of the Ability Perimeters are overall much worse in comparison.

In this Trial Form, Build is armed with the Tank Roller Shoes (タンクローラーシューズ Tanku Rōrā Shūzu) on his right leg for kicking attacks, and can also act as a working tread to roll along on a flat foot.

As a mismatched form, this form's finisher is the Vortex Attack (ボルテックアタック Borutekku Atakku).

Appearances: Build Episodes 1-2

Trial Forms
"Harinezumi! (Inorganic Fullbottle name)! Are you Ready?"
―Trial Forms' transformation announcement[src]

As mismatched forms, the finisher is the Vortex Attack (ボルテックアタック Borutekku Atakku).

These forms have yet to appear in any episode, movie, or special.



In any form that uses the Lion Fullbottle, Build is armed with the Gold Lio Gauntlet (ゴルドライオガントレット Gorudo Raio Gantoretto) on his right arm that lets him shoot bursts of yellow energy by punching.

LionCleaner Form
KRBu-Buildlioncleaner

LionCleaner Form

"Lion! Soujiki! Best Match! Are you Ready? Tategami Cyclone! LionCleaner! Yeah!"
―LionCleaner's transformation announcement[src]

Rider Statistics

  • Rider Height: 189.0 cm
  • Rider Weight: 104.3 kg

Ability Perimeters:

  • Punching Power: 17.4 tons (right arm)/7.1 tons (left arm)
  • Kicking Power: 12.0 tons (right leg)/21.3 tons (left leg)
  • Maximum Jump Height: 39.0 m
  • Maximum Running Speed: 100 m. per 3.6 sec.

LionCleaner Form (ライオンクリーナーフォーム Raion Kurīnā Fōmu) is Build's marigold and turquoise Best Match form accessed with the Lion and Soujiki Fullbottles, hence known as the Mane Cyclone (鬣サイクロン Tategami Saikuron). It is themed after a lion and a vacuum cleaner.

In this Best Match form, Build is armed with the Long Range Cleaner (ロングレンジクリーナー Rongu Renji Kurīnā) on his left arm that can suck things in with high-velocity winds, and the Trash Converter (トラッシュコンバーター Torasshu Konbātā) on his left shoulder that stores what has been sucked in.

This form grants Build a balanced boost in all his ability perimeters. This is also Build's third fastest form.

As a Best Match, this form's finisher is the Vortex Finish (ボルテックフィニッシュ Borutekku Finisshu): Build uses the Long Range Cleaner to suck the enemy towards him, holding it in place, before coating the Gold Lio Gauntlet in yellow energy, then firing off an energy lion head that bites the opponent on contact.

Though Sento possessed both Fullbottles needed for this form for an extended time and seemingly knew of their Best Match, he didn't use them until much later, likely because Lion was always being used for the Machine Builder.

Appearances: Build Episodes 9-10, 15

LionComic Form
KRBu-Buildlioncomic

LionComic Form

"Lion! Comic! Are you Ready?"
―LionComic's transformation announcement[src]

Rider Statistics

  • Rider Height: 194.0 cm
  • Rider Weight: 99.0 kg

Ability Perimeters:

  • Punching Power: 13.9 tons (right arm)/7.0 tons (left arm)
  • Kicking Power: 8.1 tons (right leg)/17.0 tons (left leg)
  • Maximum Jump Height: 32.8 m
  • Maximum Running Speed: 100 m. per 5.6 sec.

LionComic Form (ライオンコミックフォーム Raion Komikku Fōmu) is Build's marigold and yellow Trial Form accessed with the Lion and Comic Fullbottles, themed after a lion and a comic book.

In this Trial Form, Build is armed with the 4Koma Ninpoutou.

As a mismatched form, this form's finisher is the Vortex Attack (ボルテックアタック Borutekku Atakku)

Appearances: Build Episode 15

Trial Forms
"Lion! (Inorganic Fullbottle name)! Are you Ready?"
―Trial Forms' transformation announcement[src]

As mismatched forms, the finisher is the Vortex Attack (ボルテックアタック Borutekku Atakku).

These forms have yet to appear in any episode, movie, or special.



In any form that uses the Dragon Fullbottle, Build can make powerful punches and scratches with his right hand augmented by blue flames. Any form using this Fullbottle tends to be unstable, due to its immense power and close tuning to Ryuga instead of Sento.

Its power is so strong that even its Best Match configuration cannot stabilize it for long, and Sento can be forced out of his transformation and get injured.

KeyDragon Form
KRBu-Buildkeydragon

KeyDragon Form

"Dragon! Lock! Best Match! Are you Ready? Fūin no Fantasy Star! KeyDragon! Yeahhh!"
―KeyDragon's transformation announcement[src]

Rider Statistics

  • Rider Height: 196.0 cm
  • Rider Weight: 108.0 kg

Ability Perimeters:

  • Punching Power: 19.7 tons (right arm)/16.9 tons (left arm)
  • Kicking Power: 17.6 tons (right leg)/24.1 tons (left leg)
  • Maximum Jump Height: 47.4 m
  • Maximum Running Speed: 100 m. per 5.1 sec.

KeyDragon Form (キードラゴンフォーム Kī Doragon Fōmu) is Build's navy and gold Best Match form accessed with the Dragon and Lock Fullbottles, hence known as the Sealed Fantasy Star (封印のファンタジースター Fūin no Fantajī Sutā). It is themed after a dragon and a lock.

This form grants Build a significant parameter boost along with jumping power, albeit at a cost in running speed. Despite its tremendous power, this form also possesses a drawback of a potential overload due to the Dragon Fullbottle's strong synchronization with Ryuga.

In this Best Match Form, Build is armed with the Bind Master Key ( バインドマスターキー Baindo Masutā Kī) on his left arm which can be used as a battering weapon due to its weight.

As a Best Match, this form's finisher is the Vortex Finish (ボルテックフィニッシュ Borutekku Finisshu): Build fires several chains from the Bind Master Key to bind the opponent in place before creating and throwing a powerful dark blue fireball, that detonates upon impact.

Appearances: Build Episode 10-11

Trial Forms
"Dragon! (Inorganic Fullbottle name)! Are you Ready?"
―Trial Forms' transformation announcement[src]

As mismatched forms, the finisher is the Vortex Attack (ボルテックアタック Borutekku Atakku).

These forms have yet to appear in any episode, movie, or special.



In any form using the Kaizoku Fullbottle, Build wields the Kaizoku Hassyar.

KaizokuRessya Form
KRBu-Buildkaizokuressya

KaizokuRessya Form

"Kaizoku! Densya! Best Match! Are you Ready? Teikoku no Hangyakusha! KaizokuRessya! Yeahhh!"
―KaizokuRessya's transformation announcement[src]

Rider Statistics

  • Rider Height: 189.0 cm
  • Rider Weight: 95.8 kg

Ability Perimeters:

  • Punching Power: 12.0 tons (right arm)/12.7 tons (left arm)
  • Kicking Power: 15.0 tons (right leg)/13.8 tons (left leg)
  • Maximum Jump Height: 39.4 m
  • Maximum Running Speed: 100 m. per 2.5 sec.

KaizokuRessya Form (海賊レッシャフォーム Kaizoku Ressha Fōmu, lit. PirateTrain Form)[5] is Build's azure and lime green Best Match form accessed with the Kaizoku and Densya Fullbottles, hence known as the Punctual Rebel (定刻の反逆者 Teikoku no Hangyakusha). It is themed after a pirate and a train.

Being based on a train, this form is Build's fastest Best Match form, only being outpaced by Trial Form NinjyaTank by 0.2 seconds. The Kaizoku Hassyar was designed for this Best Match.

In this form, Build is armed with the Train Gauntlet (トレインガントレット Torein Gantoretto) on his left arm for increased speed.

Using the Kaizoku Hassyar, Build can perform three different special attacks by pulling back the Build Arrow and holding it before letting go. Charging the Kaizoku Hassyar escalates its shot through three of the four tiers. While performing any of this attacks, the Kaizoku Hassyar announces Shuppatsu (出発 lit. Departure).

As a Best Match, this form has three finishers:

  • Build Driver finisher:
    • Vortex Finish (ボルテックフィニッシュ Borutekku Finisshu):
  • Drill Crusher finisher:
    • Vortex Break (ボルテックブレイク Borutekku Bureiku):
      • Blade: Build channels the energy of a Fullbottle in his Drill Crusher and performs a powerful slash.
        • Kaizoku: The Drill Spiral Blade spins such that it creates an energy whirlpool before Build performs a double green energy slash.
  • Kaizoku Hassyar finisher:
    • Kaizoku Densha (海賊電車 Kaizoku Densha): It is charged by pulling back the Build Arrow and holding it before letting go. While performing this finisher, the Kaizoku Hassyar announces Hassha (発射 lit. Fire).
      • Build fires a green and azure energy train from the Kaizoku Hassyar that not only rams into the enemy, but shoots azure energy discs as well.

Appearances: Build Episodes 12-13, Heisei Generations FINAL: Build & Ex-Aid with Legend Riders[6], Build 15, 19

KaizokuGatling Form
KRBu-Buildkaizokugatling

KaizokuGatling Form

"Kaizoku! Gatling! Are you Ready?"
―KaizokuGatling's transformation announcement[src]

Rider Statistics

  • Rider Height: 189.0 cm
  • Rider Weight: 98.1 kg

Ability Perimeters:

  • Punching Power: 9.6 tons (right arm)/8.0 tons (left arm)
  • Kicking Power: 10.8 tons (right leg)/11.0 tons (left leg)
  • Maximum Jump Height: 33.1 m
  • Maximum Running Speed: 100 m. per 6.7 sec.

KaizokuGatling Form (海賊ガトリングクフォーム Kaizoku Gatoringu Fōmu) is Build's azure and gray Trial Form accessed through the Kaizoku and Gatling Fullbottles, themed after a pirate and a gatling gun.

In this Trial Form, Build is armed with the Hawk Gatlinger. Even though Build didn't use the Hawk Gatlinger in the debut episode, a scan shows that he does use it in this form.[7]

As a mismatched form, this form's finisher is the Vortex Attack (ボルテックアタック Borutekku Atakku).

Appearances: Build Episode 16

Trial Forms
"Kaizoku! (Inorganic Fullbottle name)! Are you Ready?"
―Trial Forms' transformation announcement[src]

As mismatched forms, the finisher is the Vortex Attack (ボルテックアタック Borutekku Atakku).

These forms have yet to appear in any episode, movie, or special. KaizokuShoubousha specifically was almost used in Build Episode 8, but Sento decided otherwise upon seeing it wasn't a Best Match.



In any form using the Octopus Fullbottle, Build is armed with the Twist Lash Arm (ツイストラッシュアーム Tsuisuto Rasshu Āmu) on his right shoulder that can be used to bind his opponents.

OctopusLight Form
KRBu-Buildoctopuslight

OctopusLight Form

"Octopus! Light! Best Match! Are you Ready? Inazuma Technician! OctopusLight! Yeahhh!"
―OctopusLight's transformation announcement[src]

Rider Statistics

  • Rider Height: 193.5 cm
  • Rider Weight: 96.5 kg

Ability Perimeters:

  • Punching Power: 4.4 tons (right arm)/4.8 tons (left arm)
  • Kicking Power: 8.6 tons (right leg)/8.0 tons (left leg)
  • Maximum Jump Height: 42.1 m
  • Maximum Running Speed: 100 m. per 6.5 sec.

OctopusLight Form (オクトパスライトフォーム Okutopasu Raito Fōmu) is Build's magenta and light yellow Best Match form accessed with the Octopus and Light Fullbottles, hence known as the Lightning Technician (稲妻テクニシャン Inazuma Tekunishan). It is themed after an octopus and a light bulb.

This is Build's weakest Best Match form in terms of ability perimeters. However, his jumping power and speed is on average. As such, Build is restricted to OctopusLight's special abilities to win fights.

In this Best Match form, he is armed with the Shade Breaker (シェードブレイカーム Shēdo Bureikā) and the BLD Light Bulb Shoulder (BLDライトバルブショルダー Birudo Raito Barubu Shorudā), which can both be used together to create lightning in order to attack his opponents.

As a Best Match, this form's finisher is the Vortex Finish (ボルテックフィニッシュ Borutekku Finisshu): Build fires an orb of jet-black ink from the head of the Twist Lash Arm that traps the enemy before snaring them with its tentacles, then using both the Shade Breaker and BLD Light Bulb Shoulder to shock the trapped enemy via a punching maneuver.

Appearances: Build Episode 13-14, 16

Trial Forms
"Octopus! (Inorganic Fullbottle name)! Are you Ready?"
―Trial Forms' transformation announcement[src]

As mismatched forms, the finisher is the Vortex Attack (ボルテックアタック Borutekku Atakku).

These forms have yet to appear in any episode, movie, or special.



PhoenixRobo Form
KRBu-Buildphoenixrobo

PhoenixRobo Form

"Phoenix! Robot! Best Match! Are you Ready? Fujimi no Heiki! PhoenixRobo! Yeahhh!"
―PhoenixRobo's transformation announcement[src]

Rider Statistics

  • Rider Height: 191.0 cm
  • Rider Weight: 112.3 kg

Ability Perimeters:

  • Punching Power: 15.7 tons (right arm)/28.8 tons (left arm)
  • Kicking Power: 23.4 tons (right leg)/16.8 tons (left leg)
  • Maximum Jump Height: 43.6 m
  • Maximum Running Speed: 100 m. per 6.4 sec.

PhoenixRobo Form (フェニックスロボフォーム Fenikkusu Robo Fōmu) is Build's vermillion and gunmetal gray Best Match form accessed with the Phoenix and Robot Fullbottles, hence known as the Immortal Weapon (不死身の兵器 Fujimi no Heiki). It is themed after a phoenix and a robot.

Stat-wise, this Best Match is significantly stronger than all previous Best Matches, and its punching power even surpasses RabbitTank Sparkling. In this form, Sento handled the Hokuto Three Crows quite easy, which is something he couldn't do with RabbitTank Sparkling.

As a Best Match, this form's finisher is the Vortex Finish (ボルテックフィニッシュ Borutekku Finisshu): Build covers himself in a bird-shaped flame before ramming the enemy into the air, then flies after the enemy before repeatedly ramming into it.

This form debuts in Kamen Rider Heisei Generations FINAL: Build & Ex-Aid with Legend Riders after Soichi Isurugi gives Sento its Fullbottles, going on to appear in the series and specials.

Appearances: Heisei Generations FINAL: Build & Ex-Aid with Legend Riders, Build Episode 18, Raising the Hazard Level ~7 Best Matches~

PhoenixSoujiki Form
KRBu-Buildphoenixsoujiki

PhoenixSoujiki Form

"Phoenix! Soujiki! Are you Ready?"
―PhoenixSoujiki's transformation announcement[src]

Rider Statistics

  • Rider Height: 191.0 cm
  • Rider Weight: 98.0 kg

Ability Perimeters:

  • Punching Power: 12.6 tons (right arm)/5.7 tons (left arm)
  • Kicking Power: 9.6 tons (right leg)/13.4 tons (left leg)
  • Maximum Jump Height: 37.9 m
  • Maximum Running Speed: 100 m. per 3.8 sec.

PhoenixSoujiki Form (フェニックス掃除機フォーム Fenikkusu Sōjiki Fōmu) is Build's vermillion and turquoise Trial Form accessed through the Phoenix and Soujiki Fullbottles, themed after a phoenix and a vacuum cleaner.

In this Trial Form, Build is armed with the Long Range Cleaner (ロングレンジクリーナー Rongu Renji Kurīnā) on his left arm that can suck things in with high-velocity winds, and the Trash Converter (トラッシュコンバーター Torasshu Konbātā) on his left shoulder that stores what has been sucked in.

As a mismatched form, this form's finisher is the Vortex Attack (ボルテックアタック Borutekku Atakku).

Appearances: Build Episode 19[8]

Trial Forms
"Phoenix! (Inorganic Fullbottle name)! Are you Ready?"
―Trial Forms' transformation announcement[src]

As mismatched forms, the finisher is the Vortex Attack (ボルテックアタック Borutekku Atakku).

These forms have yet to appear in any episode, movie, or special.



SmaphoWolf Form
KRBu-Buildsmaphowolf

SmaphoWolf Form

"Wolf! Smapho! Best Match! Are you Ready? Tsunagaru Ippiki Ookami! SmaphoWolf! Yeahhh!"
―SmaphoWolf's transformation announcement[src]

Rider Statistics

  • Rider Height: 189.0 cm
  • Rider Weight: 91.6 kg

Ability Perimeters:

  • Punching Power: 16.6 tons (right arm)/5.2 tons (left arm)
  • Kicking Power: 10.4 tons (right leg)/20.8 tons (left leg)
  • Maximum Jump Height: 41.6 m
  • Maximum Running Speed: 100 m. per 5.1 sec.

SmaphoWolf Form (スマホウルフフォーム Sumaho Urufu Fōmu) is Build's silver and blue Best Match form accessed with the Wolf and Smapho Fullbottles, hence known as the Connected Lone Wolf (繋がる一匹狼 Tsunagaru Ippiki Ōkami). It is themed after a wolf and a smartphone.

As a Best Match, this form's finisher is the Vortex Finish (ボルテックフィニッシュ Borutekku Finisshu): Build surrounds himself with a ring of energy smartphone icons before a black energy wolf shadow circles it, leaps out, and rams into any enemy within the ring.

Appearances: Build Episode 18, Raising the Hazard Level ~7 Best Matches~

Trial Forms
"Wolf! (Inorganic Fullbottle name)! Are you Ready?"
―Trial Forms' transformation announcement[src]

As mismatched forms, the finisher is the Vortex Attack (ボルテックアタック Borutekku Atakku).

These forms have yet to appear in any episode, movie, or special.




RabbitTank Sparkling Form
KRBu-Buildrabbittanksparkling

RabbitTank Sparkling Form

"RabbitTank Sparkling! Are you Ready? Shuwatto Hajikeru! RabbitTank Sparkling! Yea-Yeahhh!"
―RabbitTank Sparkling's transformation announcement[src]

Rider Statistics

  • Rider Height: 202.0 cm
  • Rider Weight: 102.1 kg

Ability Perimeters:

  • Punching Power: 14.9 tons (right arm)/25.5 tons (left arm)
  • Kicking Power: 35.6 tons (right leg)/26.7 tons (left leg)
  • Maximum Jump Height: 66.0 m
  • Maximum Running Speed: 100 m. per 2.0 sec.

RabbitTank Sparkling Form (ラビットタンクスパークリングフォーム Rabitto Tanku Supākuringu Fōmu) is Build's carbonated soda upgrade form accessed with the Rabbit Tank Sparkling Fullbottle.

RabbitTank Sparkling, in comparison to RabbitTank, is a giant leap of improvement, literally. It can run faster than KaizokuRessya, jump higher than RabbitTank, and has a nice assortment of offensive power perimeters, with the right leg boasting more power then any of Build's previously introduced forms.

This form allows Build to use the Drill Crusher, Hawk Gatlinger, 4Koma Ninpoutou and Kaizoku Hassyar without restrictions.

This form has two finishers:

  • Build Driver finisher:
    • Sparkling Finish (スパークリングフィニッシュ Supākuringu Finisshu): This finisher has three variations:
      • Build delivers a powerful, bubbly kick attack at the enemy
      • Build leaps high into the air before creating a red and blue, spiraling, hourglass-shaped vortex resembling a wormhole. He then dives down through the wormhole, and kicks. The wormhole is also capable of sucking in and disintegrating opponents' attacks.
      • Build delivers a powerful, bubbly kick attack at the enemy from behind in close range.
  • Kaizoku Hassyar finisher:
    • Kaizoku Densha (海賊電車 Kaizoku Densha): It is charged by pulling back the Build Arrow and holding it before letting go. While performing this finisher, the Kaizoku Hassyar announces Hassha (発射 lit. Fire).
      • Build fires a green and azure energy train from the Kaizoku Hassyar that not only rams into the enemy, but shoots azure energy discs as well.

Appearances: Build Episode 14, Heisei Generations FINAL: Build & Ex-Aid with Legend Riders, Build 15-19

RabbitTank Hazard Form

"Rabbit! Tank! Super Best Match!"
―Hazard Trigger docking announcement[src]

"Don Den Gan! Don Den Gan!"
―Looping standby announcement[src]

"Gata Gata Gotton! Zuttan Zutan!"
―Vortex Crank cranking announcement[src]

"Are you Ready? Hazard On! Uncontrol Switch Black Hazard! Yabei!"
―Hazard Form transformation announcement[src]

RabbitTank Hazard

RabbitTank Hazard Form

Rider Statistics

  • Rider Height:
  • Rider Weight:

Ability Perimeters:

  • Punching Power:
  • Kicking Power:
  • Maximum Jump Height:
  • Maximum Running Speed:

RabbitTank Hazard Form (ラビットタンクハザードフォーム Rabitto Tanku Hazādo Fōmu) is Build's turbocharged super form accessed by upgrading RabbitTank Form with the Hazard Trigger.

Appearances: Build Episode 20

SmaphoWolf Hazard Form
SumahoWolf Hazard

SmaphoWolf Hazard Form

"Wolf! Smapho! Super Best Match!"
―Hazard Trigger docking announcement[src]

"Don Den Gan! Don Den Gan!"
―Looping standby announcement[src]

"Gata Gata Gotton! Zuttan Zutan!"
―Vortex Crank cranking announcement[src]

"Are you Ready? Hazard On! Uncontrol Switch Black Hazard! Yabei!"
―Hazard Form transformation announcement[src]

Rider Statistics

  • Rider Height:
  • Rider Weight:

Ability Perimeters:

  • Punching Power:
  • Kicking Power:
  • Maximum Jump Height:
  • Maximum Running Speed:

SmaphoWolf Hazard Form (スマホウルフハザードフォーム Sumaho Urufu Hazādo Fōmu) is Build's turbocharged super form accessed by upgrading SmaphoWolf Form with the Hazard Trigger.

This form is exclusive to Kamen Rider Build: Raising the Hazard Level ~7 Best Matches~.

Build uses the Full Full RabbitTank Bottle to upgrade Hazard Form into either RabbitRabbit Form or TankTank Form. Build's weapon in these forms is the Fullbottle Buster.

RabbitRabbit Form
RabbitRabbitForm

RabbitRabbit Form

RabbitRabbit Form (ラビットラビットフォーム Rabitto Rabitto Fōmu) is one of Build's true super forms, based on the Rabbit Halfbody. It is accessed by upgrading RabbitTank Hazard Form with the Full Full RabbitTank Bottle, set to its Rabbit mode.

Appearances: Build Episode TBA
d

TankTank Form
TankTankForm

Tank Form

TankTank Form (タンクタンクフォーム Tanku Tanku Fōmu) is one of Build's true super forms, based on the Tank Halfbody. It is accessed by upgrading RabbitTank Hazard Form with the Full Full RabbitTank Bottle, set to its Tank mode.

Appearances: Build Episode TBA




These forms are accessed through Fullbottles not available in the main series and are exclusive to specials or spin-off installments.

KumaTelevi Form
Kumatelevi

KumaTelevi Form

"Kuma! Televi! Best Match! Are you Ready? Hachimitsu High Vision! KumaTelevi! Yeahhh!"
―KumaTelevi's transformation announcement[src]

Rider Statistics

  • Rider Height:
  • Rider Weight:

Ability Perimeters:

  • Punching Power:
  • Kicking Power:
  • Maximum Jump Height:
  • Maximum Running Speed:

KumaTelevi Form (クマテレビフォーム Kuma Terebi Fōmu) is Build's gold and gunmetal gray Best Match form accessed with the Kuma and Televi Fullbottles, hence known as the Honey High Vision (はちみつハイビジョン Hachimitsu Hai Bijon). It is themed after a bear and a television.

As a Best Match, this form's finisher is the Vortex Finish (ボルテックフィニッシュ Borutekku Finisshu).

This form is exclusive to Kamen Rider Build: Birth! KumaTelevi!! VS Kamen Rider Grease!.[9]

Trial Forms
"Kuma! (Inorganic Fullbottle name)! Are you Ready?"
―Trial Forms' transformation announcement[src]

As mismatched forms, the finisher is the Vortex Attack (ボルテックアタック Borutekku Atakku).

These forms have yet to appear in any episode, movie, or special.



ToraUFO Form
ToraUFO

ToraUFO Form

"Tora! UFO! Best Match! Are you Ready? Mikakunin Jungle Hunter! ToraUFO! Yeahhh!"
―ToraUFO's transformation announcement[src]

Rider Statistics

  • Rider Height:
  • Rider Weight:

Ability Perimeters:

  • Punching Power:
  • Kicking Power:
  • Maximum Jump Height:
  • Maximum Running Speed:

ToraUFO Form (トラユーフォーフォーム Tora Yūfō Fōmu) is Build's marigold and pink Best Match form accessed with the Tora and UFO Fullbottles, hence known as the Unidentified Jungle Hunter (未確認ジャングルハンター Mikakunin Janguru Hantā). It is themed after a tiger and an UFO.

As a Best Match, this form's finisher is the Vortex Finish (ボルテックフィニッシュ Borutekku Finisshu).

This form is exclusive to Kamen Rider Build: Raising the Hazard Level ~7 Best Matches~.

Trial Forms
"Tora! (Inorganic Fullbottle name)! Are you Ready?"
―Trial Forms' transformation announcement[src]

As mismatched forms, the finisher is the Vortex Attack (ボルテックアタック Borutekku Atakku).

These forms have yet to appear in any episode, movie, or special.



KujiraJet Form
KujiraJet

KujiraJet Form

"Kujira! Jet! Best Match! Are you Ready? Amakakeru Big Wave! KujiraJet! Yeahhh!"
―KujiraJet's transformation announcement[src]

Rider Statistics

  • Rider Height:
  • Rider Weight:

Ability Perimeters:

  • Punching Power:
  • Kicking Power:
  • Maximum Jump Height:
  • Maximum Running Speed:

KujiraJet Form (クジラジェットフォーム Kujira Jetto Fōmu) is Build's navy and teal Best Match form accessed with the Kujira and Jet Fullbottles, hence known as the Soaring Big Wave (天翔けるビッグウェーブ Amakakeru Biggu Wēbu). It is themed after a whale and a jet plane.

As a Best Match, this form's finisher is the Vortex Finish (ボルテックフィニッシュ Borutekku Finisshu).

This form is exclusive to Kamen Rider Build: Raising the Hazard Level ~7 Best Matches~.

Trial Forms
"Kujira! (Inorganic Fullbottle name)! Are you Ready?"
―Trial Forms' transformation announcement[src]

As mismatched forms, the finisher is the Vortex Attack (ボルテックアタック Borutekku Atakku).

These forms have yet to appear in any episode, movie, or special.



KirinCyclone Form
KirinCyclone

KirinCyclone Form

"Kirin! Senpuki! Best Match! Are you Ready? Arashi wo Yobu Kyotou! KirinCyclone! Yeahhh!"
―KirinCyclone's transformation announcement[src]

Rider Statistics

  • Rider Height:
  • Rider Weight:

Ability Perimeters:

  • Punching Power:
  • Kicking Power:
  • Maximum Jump Height:
  • Maximum Running Speed:

KirinCyclone Form (キリンサイクロンフォーム Kirin Saikuron Fōmu) is Build's gold and baby blue Best Match form accessed with the Kirin and Senpuki Fullbottles, hence known as the Storm-calling Huge Tower (嵐を叫ぶ巨塔 Arashi wo Yobu Kyotō). It is themed after a giraffe and an electric fan.

As a Best Match, this form's finisher is the Vortex Finish (ボルテックフィニッシュ Borutekku Finisshu).

This form is exclusive to Kamen Rider Build: Raising the Hazard Level ~7 Best Matches~.

Trial Forms
"Kirin! (Inorganic Fullbottle name)! Are you Ready?"
―Trial Forms' transformation announcement[src]

As mismatched forms, the finisher is the Vortex Attack (ボルテックアタック Borutekku Atakku).

These forms have yet to appear in any episode, movie, or special.



RoseCopter Form
"Rose! Helicopter! Best Match! Are you Ready? Jounetsu no Senpuki! RoseCopter! Yeahhh!"
―RoseCopter's transformation announcement[src]

Rider Statistics

  • Rider Height:
  • Rider Weight:

Ability Perimeters:

  • Punching Power:
  • Kicking Power:
  • Maximum Jump Height:
  • Maximum Running Speed:

RoseCopter Form (ローズコプターフォーム Rōzu Koputā Fōmu) is Build's red and teal Best Match form accessed with the Rose and Helicopter Fullbottles, hence known as the Fan of Passion (情熱の扇風機 Jōnetsu no Senpūki). It is themed after a rose and a helicopter.

As a Best Match, this form's finisher is the Vortex Finish (ボルテックフィニッシュ Borutekku Finisshu).

This form is exclusive to Kamen Rider Build: Raising the Hazard Level ~7 Best Matches~.


SameBike Form
SameBike

SameBike Form

"Same! Bike! Best Match! Are you Ready? Dokusou Hunter! SameBike! Yeahhh!"
―SameBike's transformation announcement[src]

Rider Statistics

  • Rider Height:
  • Rider Weight:

Ability Perimeters:

  • Punching Power:
  • Kicking Power:
  • Maximum Jump Height:
  • Maximum Running Speed:

SameBike Form (サメバイクフォーム Same Baiku Fōmu) is Build's navy and scarlet Best Match form accessed with the Same and Bike Fullbottles, hence known as the Solo-running Hunter (独走ハンター Dokusō Hantā). It is themed after a shark and the Machine Builder.

As a Best Match, this form's finisher is the Vortex Finish (ボルテックフィニッシュ Borutekku Finisshu).

This form is exclusive to Kamen Rider Build: Raising the Hazard Level ~7 Best Matches~.


GoldScorpion Form
GoldScorpionForm

GoldScorpion Form

"Scorpion! Gold! Best Match! Are you Ready? Kouki naru Dokubari! GoldScorpion! Yeahhh!"
―GoldScorpion's transformation announcement[src]

Rider Statistics

  • Rider Height:
  • Rider Weight:

Ability Perimeters:

  • Punching Power:
  • Kicking Power:
  • Maximum Jump Height:
  • Maximum Running Speed:

GoldScorpion Form (ゴールドスコーピオンフォーム Gōrudo Sukōpion Fōmu) is Build's maroon and marigold Best Match form accessed with the Scorpion and Gold Fullbottles, hence known as the Noble Stinger (高貴なる毒針 Kōki naru Dokubari). It is themed after a scorpion and gold.

As a Best Match, this form's finisher is the Vortex Finish (ボルテックフィニッシュ Borutekku Finisshu).

This form is exclusive to Kamen Rider Build: Raising the Hazard Level ~7 Best Matches~.

Trial Forms
"Scorpion! (Inorganic Fullbottle name)! Are you Ready?"
―Trial Forms' transformation announcement[src]

As mismatched forms, the finisher is the Vortex Attack (ボルテックアタック Borutekku Atakku).

These forms have yet to appear in any episode, movie, or special.




These Forms are exclusive to Kamen Rider Battle: Ganbarizing.

MerryChristmas Form
Build Chrismas

MerryChristmas Form

"Santa Claus! Cake! Best Match! Are you Ready? Seinaru Shisha! MerryChristmas! Yeahhh!"
―MerryChristmas's transformation announcement[src]

MerryChristmas Form (メリークリスマスフォーム Merī Kurisumasu Fōmu) is Build's red and cream Best Match form accessed with the Santa Claus and Cake Fullbottles, hence known as the The Holy Envoy (聖なる使者 Seinaru Shisha). It is themed after Santa Claus and a cake.

As a Best Match, this form's finisher is the Vortex Finish (ボルテックフィニッシュ Borutekku Finisshu).

Trial Forms
"Santa Claus! (Inorganic Fullbottle name)! Are you Ready?"
―Trial Forms' transformation announcement[src]

As mismatched forms, the finisher is the Vortex Attack (ボルテックアタック Borutekku Atakku).