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This article is about a/an rider form used by several identities in Kamen Rider Build.
KRBu-Buildrabbittank

Kamen Rider Build

Kamen Rider Build (仮面ライダービルド Kamen Raidā Birudo) may refer to one of the following characters.

Derivations

Hologram

After completing the Build Driver's construction, Takumi Katsuragi then did a video demonstration of his experiments on a secret computer file record, including a holographic combat simulation of Build's capabilities and showing its possibly limitless form changing potential. He show hologram Build as Rabbit Tank Form to defeat two Guardians.

Forms

To transform into Kamen Rider Build, a user sets two different Fullbottles into the Build Driver and turns the crank. 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. The additional use of the Hazard Trigger upgrades a Best Match into a Super Best Match (スーパベストマッチ Supā Besuto Matchi).

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 the Best Matches is called the Vortex Finish (ボルテックフィニッシュ Borutekku Finisshu). The finisher of the Super Best Matches is called the Hazard Finish (ハザードフィニッシュ Hazādo 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.

RabbitTank Form
KRBu-Buildrabbittank

RabbitTank Form

"Rabbit! Tank! Best Match! Are you ready? (Techno rock music) Hagane no moonsault! RabbitTank! Yeahhh!"
―RabbitTank's transformation announcement[src]

Rider Statistics

  • Rider Height: 196 cm.
  • Rider Weight: 99 kg.

Ability Parameters (Sento ver. → Shinobu ver.):

  • Punching Power: 9.9 t. → 14.7 t. (right arm)/17 t. → 25.2 t. (left arm)
  • Kicking Power: 23.7 t. → 35.1 t. (right leg)/17.8 t. → 26.3 t. (left leg)
  • Maximum Jump Height: 55 m. → 71.5 m.
  • Maximum Running Speed: 100 m. per 2.9 sec. → 1.9 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 a Touto Best Match, and is themed after a rabbit and a tank.

Being Build's most balanced form (and second fastest form), RabbitTank is the Best Match form favored by Kamen Rider Build, despite being able to transform with any Fullbottles. The Rabbit and Tank Fullbottles are noted as having a particularly high synergy with each other and compatibility with various mechanisms, and thus RabbitTank is the basis of several upgraded forms Build can access.

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 surface.

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: Ex-Aid Episode 44, True Ending, 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!, Build 21-25, 30, 42-43, Be The One

RabbitSoujiki Form
KRBu-Buildrabbitsoujiki

RabbitSoujiki Form

"Rabbit! Soujiki! Are you ready? (Funky music)"
―RabbitSoujiki's transformation announcement[src]

Rider Statistics

  • Rider Height: 196 cm.
  • Rider Weight: 93.7 kg.

Ability Parameters:

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

This form is exclusive to Kamen Rider Build Episode 2

RabbitGatling Form
KRBu-Buildrabbitgatling

RabbitGatling Form

"Rabbit! Gatling! Are you ready? (Funky music)"
―RabbitGatling's transformation announcement[src]

Rider Statistics

  • Rider Height: 196 cm.
  • Rider Weight: 95 kg.

Ability Parameters:

  • Punching Power: 7.9 t. (right arm)/8 t. (left arm)
  • Kicking Power: 10.8 t. (right leg)/14.2 t. (left leg)
  • Maximum Jump Height: 37.7 m.
  • Maximum Running Speed: 100 m. 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).

This form is exclusive to Kamen Rider Build Episode 4

Trial Forms
"Rabbit! (Inorganic Fullbottle name)! Are you ready? (Funky music)"
―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? (Tropical rock music) Kagayaki no destroyer! GorillaMond! Yeahhh!"
―GorillaMond's transformation announcement[src]

Rider Statistics

  • Rider Height: 189 cm.
  • Rider Weight: 112 kg.

Ability Parameters:

  • Punching Power: 25.9 t. (right arm)/15.8 t. (left arm)
  • Kicking Power: 17.3 t. (right leg)/16.5 t. (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 a Touto Best Match, and 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 three 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.
  • Build uses the BLD Prism Glove to create a pile of diamonds, then punches it with the Muscle Glove, sending the diamonds flying at the enemy.

Appearances: Ex-Aid Episode 44, True Ending, Build Episode 2, Transformation Lessons: Kamen Rider Build Chapter, Build 3-4, 6

GorillaSoujiki Form
KRBu-Buildgorillasoujiki

GorillaSoujiki Form

"Gorilla! Soujiki! Are you ready? (Funky music)"
―GorillaSoujiki's transformation announcement[src]

Rider Statistics

  • Rider Height: 189 cm.
  • Rider Weight: 111.7 kg.

Ability Parameters:

  • Punching Power: 20.7 t. (right arm)/5.7 t. (left arm)
  • Kicking Power: 9.6 t. (right leg)/13.2 t. (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).

This form is exclusive to Kamen Rider Build Episode 3

GorillaRocket Form
KRBu-Buildgorillarocket

GorillaRocket Form

"Gorilla! Rocket! Are you ready? (Funky music)"
―GorillaRocket's transformation announcement[src]

Rider Statistics

  • Rider Height: 189 cm.
  • Rider Weight: 115 kg.

Ability Parameters:

  • Punching Power: 20.7 t. (right arm)/11.6 t. (left arm)
  • Kicking Power: 13.5 t. (right leg)/13.2 t. (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).

This form is exclusive to Kamen Rider 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) on his back that grant him the ability to fly, along with the Hawk Gatlinger. [1]

HawkGatling Form
KRBu-Buildhawkgatling

HawkGatling Form

Kamen Rider Build HawkGatling Form (Extended Wings)

Extended wings

"Taka! Gatling! Best Match! Are you ready? (Brass band music) Tenkuu no abarenbou! HawkGatling! Yeahhh!"
―HawkGatling's transformation announcement[src]

Rider Statistics

  • Rider Height: 193 cm.
  • Rider Weight: 107 kg.

Ability Parameters (Sento ver. → Shinobu ver.):

  • Punching Power: 9.7 t. → 14.4 t. (right arm)/10 t. → 14.8 t. (left arm)
  • Kicking Power: 13.5 t. → 20 t.(right leg)/14.2 t. → 20.1 t.(left leg)
  • Maximum Jump Height: 41.7 m. → 54.2 m.
  • Maximum Running Speed: 100 m. per 5.8 sec. → 3.9 sec.

HawkGatling Form (ホークガトリングフォーム 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 a Touto Best Match, and 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, 24, 43

Trial Forms
"Taka! (Inorganic Fullbottle name)! Are you ready? (Funky music)"
―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? (Surfer rock music) Shinobi no entertainer! NinninComic! Yeahhh!"
―NinninComic's transformation announcement[src]

Rider Statistics

  • Rider Height: 194 cm.
  • Rider Weight: 90.5 kg.

Ability Parameters (Sento ver. → Shinobu ver.):

  • Punching Power: 11.1 t. → 16.4 t. (right arm)/8.8 t. → 13 t. (left arm)
  • Kicking Power: 10.1 t. → 14.9 t. (right leg)/22.2 t. → 32.9 t. (left leg)
  • Maximum Jump Height: 45.4 m. → 59 m.
  • Maximum Running Speed: 100m. per 4.2 sec → 2.8 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 a Touto Best Match, and 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[2], Build 16, Birth! KumaTelevi!! VS Kamen Rider Grease!, Build 20, 42 (off-screen), 43-44

NinjyaTank Form
KRBu-Buildninjyatank

NinjyaTank Form

"Ninjya! Tank! Are you ready? (Funky music)"
―NinjyaTank's transformation announcement[src]

Rider Statistics

  • Rider Height: 194 cm.
  • Rider Weight: 101.1 kg.

Ability Parameters:

  • Punching Power: 8.9 t. (right arm)/13.6 t. (left arm)
  • Kicking Power: 19 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).

This form is exclusive to Kamen Rider Build Episode 6

Trial Forms
"Ninjya! (Inorganic Fullbottle name)! Are you ready? (Funky music)"
―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? (Orchestra music) Buttobi monotone! RocketPanda! Yeahhh!"
―RocketPanda's transformation announcement[src]

Rider Statistics

  • Rider Height: 189 cm.
  • Rider Weight: 114 kg.

Ability Parameters:

  • 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: 100 m. 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 a Touto Best Match, and 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, 20

PandaGatling Form
KRBu-Buildpandagatling

PandaGatling Form

"Panda! Gatling! Are you ready? (Funky music)"
―PandaGatling's transformation announcement[src]

Rider Statistics

  • Rider Height: 189 cm.
  • Rider Weight: 112 kg.

Ability Parameters:

  • Punching Power: 15 t. (right arm)/8 t. (left arm)
  • Kicking Power: 10.8 t. (right leg)/12.3 t. (left leg)
  • Maximum Jump Height: 26.6 m.
  • Maximum Running Speed: 100 m. 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).

This form is exclusive to Kamen Rider Build Episode 7

Trial Forms
"Panda! (Inorganic Fullbottle name)! Are you ready? (Funky music)"
―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! Syoubousya! Best Match! Are you ready? (Rock music with sirens) Rescue kenzan! FireHedgehog! Yeahhh!"
―FireHedgehog's transformation announcement[src]

Rider Statistics

  • Rider Height: 190 cm.
  • Rider Weight: 103.7 kg.

Ability Parameters:

  • Punching Power: 13.7 t. (right arm)/11.9 t. (left arm)
  • Kicking Power: 14.7 t. (right leg)/14 t. (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 Syoubousya Fullbottles, hence known as the Rescue Kenzan (レスキュー剣山 Resukyū Kenzan). It is a Touto Best Match, and 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? (Funky music)"
―HarinezumiTank's transformation announcement[src]

Rider Statistics

  • Rider Height: 194 cm.
  • Rider Weight: 102.7 kg.

Ability Parameters:

  • Punching Power: 11 t. (right arm)/13.6 t. (left arm)
  • Kicking Power: 19 t. (right leg)/11.2 t. (left leg)
  • Maximum Jump Height: 28.4 m.
  • Maximum Running Speed: 100 m. per 7 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 Parameters 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? (Funky music)"
―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? (Techno rock music) Tategami cyclone! LionCleaner! Yeah!"
―LionCleaner's transformation announcement[src]

Rider Statistics

  • Rider Height: 189 cm.
  • Rider Weight: 104.3 kg.

Ability Parameters:

  • Punching Power: 17.4 t. (right arm)/7.1 t. (left arm)
  • Kicking Power: 12 t. (right leg)/21.3 t. (left leg)
  • Maximum Jump Height: 39 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 a Touto Best Match, and 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 parameters. 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 Build 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? (Funky music)"
―LionComic's transformation announcement[src]

Rider Statistics

  • Rider Height: 194 cm.
  • Rider Weight: 99 kg.

Ability Parameters:

  • Punching Power: 13.9 t. (right arm)/7 t. (left arm)
  • Kicking Power: 8.1 t. (right leg)/17 t. (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)

This form is exclusive to Kamen Rider Build Episode 15

Trial Forms
"Lion! (Inorganic Fullbottle name)! Are you ready? (Funky music)"
―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 Banjo.

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

KeyDragon Form
KRBu-Buildkeydragon

KeyDragon Form

"Dragon! Lock! Best Match! Are you ready? (Fantasy-themed music) Fūin no fantasy star! KeyDragon! Yeahhh!"
―KeyDragon's transformation announcement[src]

Rider Statistics

  • Rider Height: 196 cm.
  • Rider Weight: 108 kg.

Ability Parameters:

  • Punching Power: 19.7 t. (right arm)/16.9 t. (left arm)
  • Kicking Power: 17.6 t. (right leg)/24.1 t. (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 a Touto Best Match, and 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? (Funky music)"
―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 Kaizoku Fullbottle, Build wields the Kaizoku Hassyar.

KaizokuRessya Form
KRBu-Buildkaizokuressya

KaizokuRessya Form

"Kaizoku! Densya! Best Match! Are you ready? (Pirate-themed string music) Teikoku no hangyakusha! KaizokuRessya! Yeahhh!"
―KaizokuRessya's transformation announcement[src]

Rider Statistics

  • Rider Height: 189 cm.
  • Rider Weight: 95.8 kg.

Ability Parameters (Sento ver. → Shinobu ver.):

  • Punching Power: 12 t. → 17.8 t. (right arm)/12.7 t. → 18.8 t.(left arm)
  • Kicking Power: 15 t. → 22.2 t.(right leg)/13.8 t. → 20.4 t. (left leg)
  • Maximum Jump Height: 39.4 m. → 51.2 m.
  • Maximum Running Speed: 100 m. per 2.5 sec. → 1.7 sec.

KaizokuRessya Form (海賊レッシャフォーム Kaizoku Ressha Fōmu, lit. PirateTrain Form)[3] 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 a Touto Best Match, and 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 azure energy slash.
  • Kaizoku Hassyar finisher:
    • Kaizoku Densya (海賊電車 lit. Pirate Train): 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, Build 15, 19, 43

KaizokuGatling Form
KRBu-Buildkaizokugatling

KaizokuGatling Form

"Kaizoku! Gatling! Are you ready? (Funky music)"
―KaizokuGatling's transformation announcement[src]

Rider Statistics

  • Rider Height: 189 cm.
  • Rider Weight: 98.1 kg.

Ability Parameters:

  • Punching Power: 9.6 t. (right arm)/8 t. (left arm)
  • Kicking Power: 10.8 t. (right leg)/11 t. (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.[4]

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

This form is exclusive to Kamen Rider Build Episode 16

Trial Forms
"Kaizoku! (Inorganic Fullbottle name)! Are you ready? (Funky music)"
―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. KaizokuSyoubousya specifically was almost used in Build Episode 8, but Sento decided otherwise upon seeing it wasn't a Best Match.



In any form that uses 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? (Electronic music) Inazuma technician! OctopusLight! Yeahhh!"
―OctopusLight's transformation announcement[src]

Rider Statistics

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

Ability Parameters:

  • Punching Power: 4.4 t. (right arm)/4.8 t. (left arm)
  • Kicking Power: 8.6 t. (right leg)/8 t. (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 a Touto Best Match, and is themed after an octopus and a light bulb.

This is Build's weakest Best Match form in terms of ability parameters. 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? (Funky music)"
―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 Phoenix Fullbottle, Build is armed with the Flame Reviber (フレイムリヴァイバー Fureimu Rivaibā) gauntlet on his right arm for pyrokinesis and Empirial Wings (エンパイリアルウィング Enpairiaru Uingu) on his back that grant him the ability to fly.

PhoenixRobo Form
KRBu-Buildphoenixrobo

PhoenixRobo Form

"Phoenix! Robot! Best Match! Are you ready? (Dark classical music) Fujimi no heiki! PhoenixRobo! Yeahhh!"
―PhoenixRobo's transformation announcement[src]

Rider Statistics

  • Rider Height: 191 cm.
  • Rider Weight: 112.3 kg.

Ability Parameters:

  • Punching Power: 15.7 t. (right arm)/28.8 t. (left arm)
  • Kicking Power: 23.4 t. (right leg)/16.8 t. (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 a Hokuto Best Match, and is themed after a phoenix and a robot.

In this Best Match form, Build is armed with the Demolition One (デモリションワン Demorishon Wan) on his left hand for dismantling and crushing targets, which connected to the BLD Arsenal Shoulder (BLDアーセナルショルダー Bī Eru Dī Āsenaru Shorudā) on his left shoulder that allows him to turn dismantled objects into his personal robot troops.

Stat-wise, this Best Match is significantly stronger than all previous Best Matches, and its punching power even surpasses RabbitTank Sparkling. In this form, Build 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.

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

PhoenixSoujiki Form
KRBu-Buildphoenixsoujiki

PhoenixSoujiki Form

"Phoenix! Soujiki! Are you ready? (Funky music)"
―PhoenixSoujiki's transformation announcement[src]

Rider Statistics

  • Rider Height: 191 cm.
  • Rider Weight: 98 kg.

Ability Parameters:

  • Punching Power: 12.6 t. (right arm)/5.7 t. (left arm)
  • Kicking Power: 9.6 t. (right leg)/13.4 t. (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 Episodes 19, 21

Trial Forms
"Phoenix! (Inorganic Fullbottle name)! Are you ready? (Funky music)"
―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 Wolf Fullbottle, Build is armed with the Wolfatal Claw (ウルフェイタルクロー Urufeitaru Kurō) on his right arm for channeling animal instinct.

SmaphoWolf Form
KRBu-Buildsmaphowolf

SmaphoWolf Form

"Wolf! Smapho! Best Match! Are you ready? (Classic rock music) Tsunagaru ippiki ookami! SmaphoWolf! Yeahhh!"
―SmaphoWolf's transformation announcement[src]

Rider Statistics

  • Rider Height: 189 cm.
  • Rider Weight: 91.6 kg.

Ability Parameters:

  • Punching Power: 16.6 t. (right arm)/5.2 t. (left arm)
  • Kicking Power: 10.4 t. (right leg)/20.8 t. (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 a Hokuto Best Match, and is themed after a wolf and the Build Phone.

In this Best Match form, Build is armed with the Build Pad Shield (ビルドパッドシールド Birudo Paddo Shīrudo) on his left arm for either defending capabilities or selecting a recommended attack enhancement. Although the Build Pad Shield cracks upon sustaining a strong attack, it can repair itself. Befitting its identical appearance to the Build Phone, the Build Pad Shield can also function in the same manner, with the exception of Bike Mode.

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

Trial Forms
"Wolf! (Inorganic Fullbottle name)! Are you ready? (Funky music)"
―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 Rose Fullbottle, Build is armed with the Ibalash Arm (イバラッシュアーム Ibarasshu Āmu) on his right arm for manipulating plant vines or firing thorn projections.

RoseCopter Form
KRBu-Buildrosecopter

RoseCopter Form

"Rose! Helicopter! Best Match! Are you ready? (Spanish music) Jounetsu no senpuki! RoseCopter! Yeahhh!"
―RoseCopter's transformation announcement[src]

Rider Statistics

  • Rider Height: 190 cm.
  • Rider Weight: 94.2 kg.

Ability Parameters:

  • Punching Power: 6.3 t. (right arm)/12.9 t. (left arm)
  • Kicking Power: 14.4 t. (right leg)/10.6 t. (left leg)
  • Maximum Jump Height: 42.8 m.
  • Maximum Running Speed: 100 m. per 5.6 sec.

RoseCopter Form (ローズコプターフォーム Rōzu Koputā Fōmu) is Build's vermillion and turquoise 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 a Hokuto Best Match, and is themed after a rose and a helicopter.

In this Best Match form, Build is armed with the Batrotor Blade (バトローターブレード Batorōtā Burēdo) which he can use to fly, or alternatively, use as a weapon.

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 removes the Batrotor Blade from his back, then covers it in red energy rose vines as it starts spinning before flying at the enemy for a slashing attack.The Unstoppable Hazard
  • During an experimental test conducted by Sento and Nariaki, Build flies with the Batrotor Blade on his back as he catches any escaping targets with the vine summoned by the Ibalash Arm before dragging his target to the spinning rotor to be sliced with.Kamen Rider Build: Raising the Hazard Level ~7 Best Matches~: First Chapter

Appearances: Build Episode 21, Raising the Hazard Level ~7 Best Matches~: First Chapter, Build 22

RoseSoujiki Form
KRBu-Buildrosesoujiki

RoseSoujiki Form

"Rose! Soujiki! Are you ready? (Funky music)"
―RoseSoujiki's transformation announcement[src]

Rider Statistics

  • Rider Height: 190 cm.
  • Rider Weight: 93.2 kg.

Ability Parameters:

  • Punching Power: 5 t. (right arm)/5.7 t. (left arm)
  • Kicking Power: 9.6 t. (right leg)/8.5 t. (left leg)
  • Maximum Jump Height: 31.8 m.
  • Maximum Running Speed: 100 m. per 5.7 sec.

RoseSoujiki Form (ローズ掃除機フォーム Rōzu Sōjiki Fōmu) is Build's vermillion and turquoise Trial Form accessed through the Rose and Soujiki Fullbottles, themed after a rose 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.

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

This form is exclusive to Kamen Rider Build Episode 21

RoseSyoubousya Form
KRBu-Buildrosesyoubousya

RoseSyoubousya Form

"Rose! Syoubousya! Are you ready? (Funky music)"
―RoseSyoubousya's transformation announcement[src]

Rider Statistics

  • Rider Height: 190 cm.
  • Rider Weight: 99.5 kg.

Ability Parameters:

  • Punching Power: 5 t. (right arm)/9.5 t. (left arm)
  • Kicking Power: 11.8 t. (right leg)/8.5 t. (left leg)
  • Maximum Jump Height: 30.1 m.
  • Maximum Running Speed: 100 m. per 5 sec.

RoseSyoubousya Form (ローズ消防車フォーム Rōzu Shōbōsha Fōmu) is Build's vermillion and scarlet Trial Form accessed through the Rose and Syoubousya Fullbottles, themed after a rose and a fire engine.

In this Trial 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.

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

This form is exclusive to Kamen Rider Build Episode 25

Trial Forms
"Rose! (Inorganic Fullbottle name)! Are you ready? (Funky music)"
―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 Tora Fullbottle, Build is armed with the BLD Tora Fight Glove (BLDトラファイトグローブ Bī Eru Dī Tora Faito Gurōbu) on his right hand for slashing attacks, and the Jungle Foot Shoes (ジャングルフットシューズ Janguru Futto Shūzu) for leaping at the enemy at blurring speeds for a split second.[5]

ToraUFO Form
KRBu-Buildtoraufo

ToraUFO Form

"Tora! UFO! Best Match! Are you ready? (Jungle music) Mikakunin jungle hunter! ToraUFO! Yeahhh!"
―ToraUFO's transformation announcement[src]

Rider Statistics

  • Rider Height: 189 cm.
  • Rider Weight: 100.5 kg.

Ability Parameters:

  • Punching Power: 17.8 t. (right arm)/5.1 t. (left arm)
  • Kicking Power: 8.7 t. (right leg)/21.2 t. (left leg)
  • Maximum Jump Height: 46.5 m.
  • Maximum Running Speed: 100 m. per 3.9 sec.

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 a Seito Best Match, and is themed after a tiger and a UFO.

In this form, This form grants Build a balanced boost in all his ability parameters akin to LionCleaner. He is also armed with the Inbay Dodge Shoes (インベイダッジシューズ Inbei Dajji Shūzu) that can generate a pink, energy UFO beneath him for hovering capabilities.

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 generates a pink, energy UFO that rams into any enemy before sucking them up and shredding them to pieces.

Appearances: Raising the Hazard Level ~7 Best Matches~:, Next Chapter, Build Episode 22

Trial Forms
"Tora! (Inorganic Fullbottle name)! Are you ready? (Funky music)"
―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 Kujira Fullbottle, Build is armed with the Navy Chest Armor (ネイビーチェストアーマー Neibī Chesuto Āmā) for protection against water pressure, and the BLD Spout Glove (BLDスパウトグローブ Bī Eru Dī Supauto Gurōbu) on his right hand for a water-based shooting attack.

KujiraJet Form
KujiraJetScan

KujiraJet Form

"Kujira! Jet! Best Match! Are you ready? (Tropical music) Amakakeru big wave! KujiraJet! Yeahhh!"
―KujiraJet's transformation announcement[src]

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

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 floods the area in front of him and goes underwater, then a giant whale comes up and boosts Build with its blowhole allowing Build to fly out of the water, and perform a powerful kick at the enemy.
  • Drill Crusher finisher:
    • Vortex Break (ボルテックブレイク Borutekku Bureiku):
      • Gun: Build channels the energy of a Fullbottle in his Drill Crusher and performs a powerful blast.
        • Sensuikan: Build shoots some torpedoes at the enemy.

Appearances: Raising the Hazard Level ~7 Best Matches~:, Next Chapter Build Episode 22

KujiraSyoubousya Form
KRBu-Buildkujirasyoubousya

KujiraSyoubousya Form

"Kujira! Syoubousya! Are you ready? (Funky music)"
―KujiraSyoubousya's transformation announcement[src]

Rider Statistics

  • Rider Height: 189.5 cm.
  • Rider Weight: 120 kg.

Ability Parameters:

  • Punching Power: 14.4 t. (right arm)/9.5 t. (left arm)
  • Kicking Power: 11.8 t. (right leg)/20.4 t. (left leg)
  • Maximum Jump Height: 28.8 m.
  • Maximum Running Speed: 100 m. per 7 sec.

KujiraSyoubousya Form (クジラ消防車フォーム Kujira Shōbōsha Fōmu) is Build's navy and scarlet-colored Trial Form accessed from the Kujira and Syoubousya Fullbottles. It is themed after a whale and a fire engine.

This form is exclusive to Kamen Rider Build Episode 25

Trial Forms
"Kujira! (Inorganic Fullbottle name)! Are you ready? (Funky music)"
―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 Kirin Fullbottle, Build can slash the opponent with the giraffe neck on his right hand.

KirinCyclone Form
KirinCycloneScan

KirinCyclone Form

"Kirin! Senpuki! Best Match! Are you ready? (Techno rock music) Arashi o yobu kyotou! KirinCyclone! Yeahhh!"
―KirinCyclone's transformation announcement[src]

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 Towering Storm-Caller (嵐を叫ぶ巨塔 Arashi o Yobu Kyotō). It is a Seito Best Match 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): Build flies to the enemy with his fan arm, then summons an energy giraffe neck and attacks the enemy with it.

Appearances: Raising the Hazard Level ~7 Best Matches~: Next Chapter, Build Episode 22

Trial Forms
"Kirin! (Inorganic Fullbottle name)! Are you ready? (Funky music)"
―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? (Techno rock music) Shuwatto hajikeru! RabbitTank Sparkling! Yea-Yeahhh!"
―RabbitTank Sparkling's transformation announcement[src]

Rider Statistics

  • Rider Height: 202 cm.
  • Rider Weight: 102.1 kg.

Ability Parameters:

  • Punching Power: 14.9 t. (right arm)/25.5 t. (left arm)
  • Kicking Power: 35.6 t. (right leg)/26.7 t. (left leg)
  • Maximum Jump Height: 66 m.
  • Maximum Running Speed: 100 m. per 2 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 RabbitTank 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 parameters, 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 Densya (海賊電車 lit. Pirate Train): 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.
  • Build Driver + Drill Crusher finisher:
    • Sparkling Finish/Vortex Break (スパークリングフィニッシュ/ボルテックブレイク Supākuringu Finisshu/Borutekku Bureiku): After plugging a Fullbottle into the Full Bottle Slot of the Drill Crusher, Build can perform a powerful, bubbly finisher.
      • Blade: Build channels the energy of a Full Bottle in his Drill Crusher and performs a powerful slash.
        • Kabutomushi: The Drill Spiral Blade cloaks itself in an energy projection resembling a rhinoceros beetle's horn and performs a powerful, bubbly stab attack.

Appearances: Build Episode 14, Heisei Generations FINAL: Build & Ex-Aid with Legend Riders, Build 15-20, Raising the Hazard Level ~7 Best Matches~: Final Chapter, 22-25, 27

"Are you ready? (Techno rock music) Uncontrol switch! Black hazard! Yabei!"
―Hazard Form transformation announcement[src]

By attaching the Hazard Trigger to the Build Driver, Build can upgrade any of his Best Match forms into a Hazard Form. This results in a base Hazard Form body with the eyes of the Best Match used. While Hazard Forms lack the unique equipment of a normal Best Match's Halfbodies, they still retain some access to their specific powers, and can use any handheld weapon tied to that Best Match.

The Hazard Trigger grants a massive strength, capable of destroying even a Hazard Smash with little effort, but usage of it puts the user at risk of losing self-awareness and going on a destructive rampage.

All of Build's forms accessed with the Hazard Trigger are armed with the HZ Deadly Gloves and HZ Vanish End Shoes.

RabbitTank Hazard Form
KRBu-Buildrabbittankhazard

RabbitTank Hazard Form

Rider Statistics

  • Rider Height: 197.5 cm.
  • Rider Weight: 101 kg.

Ability Parameters:

  • Punching Power: 19.8 t. (right arm)/34 t. (left arm)
  • Kicking Power: 47.4 t. (right leg)/35.6 t. (left leg)
  • Maximum Jump Height: 77 m.
  • Maximum Running Speed: 100 m. per 1.4 sec.

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.

In this form, Build's stats greatly surpass any other form, Rider, or Smash up to its appearance.

This form has two finishers:

  • Overflow (オーバーフロー Ōbāfurō): This finisher has two variations:
    • Build transfers surplus Nebula Gas into his HZ Deadly Gloves (HZデッドリーグローブ HZ Deddorī Gurōbu) and throws powerful punches and kicks. Additionally, Build also can simply touch the enemy for about several seconds to deliver electricity that paralyze the enemy.
    • Build rushes at the enemy at maximum speed
  • Hazard Finish (ハザードフィニッシュ Hazādo Finisshu): This finisher has two variations:
    • Build coats his right HZ Vanish End Shoe (HZヴァニッシュエンドシューズ HZ Vanisshu Endo Shūzu) in dark purple energy before delivering a powerful side kick.
    • Build rushes towards the enemy and performs a flying kick.

Appearances: Build Episodes 20- 21, Raising the Hazard Level ~7 Best Matches~: Final Chapter, Build 22-26

SmaphoWolf Hazard Form
KRBu-Buildwolfsmapho Hazard

SmaphoWolf Hazard Form

Rider Statistics

  • Rider Height: 197.5 cm.
  • Rider Weight: 101 kg.

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.

From the Tu-Ka Face Module (ツーカーフェイスモジュール Tsūkā Feisu Mojūru) (the phone icon on the right eye), Build is able to send a series of energy projections of app icons which encircle the enemy, disorienting and attacking them.

This forms has three finisher:

  • Build Driver finishers:
    • Overflow (オーバーフロー Ōbāfurō): Build transfers surplus Nebula Gas into his HZ Deadly Gloves (HZデッドリーグローブ HZ Deddorī Gurōbu) and delivers a powerful punch, summoning a wolf-like energy projection which "bites" down on the enemy.
    • Hazard Finish (ハザードフィニッシュ Hazādo 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.
        • Unicorn: An energy projection resembling a unicorn's horn spins around the Drill Crusher as Build performs a powerful stab attack.

This form is exclusive to Raising the Hazard Level ~7 Best Matches~: First Chapter.

HawkGatling Hazard Form
KRBu-Buildhawkgatlinghazard

HawkGatling Hazard Form

Rider Statistics

  • Rider Height: 197.5 cm.
  • Rider Weight: 101 kg.

Ability Parameters:

  • Punching Power: 19.4 t. (right arm)/20.4 t. (left arm)
  • Kicking Power: 27 t. (right leg)/28.4 t. (left leg)
  • Maximum Jump Height: 58.4 m.
  • Maximum Running Speed: 100 m. per 2.9 sec.

HawkGatling Hazard Form (ホークガトリングハザードフォーム Hōku Gatoringu Hazādo Fōmu) is Build's turbocharged super form accessed by upgrading HawkGatling Form with the Hazard Trigger.

Build is armed with the Hawk Gatlinger in this form. He can also summon the Solstall Wings for flight if needed.

This form has two finishers:

  • Overflow (オーバーフロー Ōbāfurō): Build performs a series of blasts with the Hawk Gatlinger while flying around the enemy with the Solstall Wings.
  • Hazard Finish (ハザードフィニッシュ Hazādo Finisshu): Build traps the enemy in a black cloud and performs a series of purple blasts with the Hawk Gatlinger.

This form is exclusive to Episode 22

KaizokuRessya Hazard Form
KRBu-Buildkaizokuressyahazard

KaizokuRessya Hazard Form

Rider Statistics

  • Rider Height: 197.5 cm.
  • Rider Weight: 101 kg.

Ability Parameters:

  • Punching Power: 24 t. (right arm)/25.4 t. (left arm)
  • Kicking Power: 30 t. (right leg)/27.6 t. (left leg)
  • Maximum Jump Height: 55.2 m.
  • Maximum Running Speed: 100 m. per 1.3 sec.

KaizokuRessya Hazard Form (海賊レッシャハザードフォーム Kaizoku Ressha Hazādo Fōmu) is Build's turbocharged super form accessed by upgrading KaizokuRessya Form with the Hazard Trigger.

Build is armed with the Kaizoku Hassyar in this form.

This form has two finishers:

  • Overflow (オーバーフロー Ōbāfurō): Build repeatedly punches the enemy with his HZ Deadly Gloves delivering purple shockwaves on impact.
  • Hazard Finish (ハザードフィニッシュ Hazādo Finisshu):

Appearances: Build Episode 24, 35

KeyDragon Hazard Form
KRBu-Buildkeydragonhazard

KeyDragon Hazard Form

Rider Statistics

  • Rider Height: 197.5 cm.
  • Rider Weight: 101 kg.

Ability Parameters:

  • Punching Power: 39.4 t. (right arm)/33.8 t. (left arm)
  • Kicking Power: 35.2 t. (right leg)/48.2 t. (left leg)
  • Maximum Jump Height: 66.4 m.
  • Maximum Running Speed: 100 m. per 2.5 sec.

KeyDragon Hazard Form (キードラゴンハザードフォーム Kī Doragon Hazādo Fōmu) is Build's turbocharged super form accessed by upgrading KeyDragon Form with the Hazard Trigger.

Build is armed with the Beat Closer in this form.

This form has two finishers:

  • Overflow (オーバーフロー Ōbāfurō): Build repeatedly punches the enemy with his HZ Deadly Gloves delivering purple shockwaves on impact.
  • Hazard Finish (ハザードフィニッシュ Hazādo Finisshu):

Appearances: Build Episode 35

By using the FullFull RabbitTank Bottle alongside the Hazard Trigger, Build can upgrade the sleek, black Hazard Form into either RabbitRabbit Form or TankTank Form. The FullFull RabbitTank Bottle was designed to give Build an immense power boost over Hazard Form while suppressing the stimulus overflow that causes Build to go berserk. Build's weapon in these forms is the Fullbottle Buster.

The ending theme for both RabbitRabbit Form and TankTank Form is entitled "Ready Go!!".

RabbitRabbit Form
KRBu-Buildrabbitrabbit

RabbitRabbit Form

"Rabbit and Rabbit! Build up! Are you ready? Overflow! (Techno pop music) Kurenai no speedy jumper! RabbitRabbit! Yabei! Haei![6]"
―Transformation announcement[src]

Rider Statistics

  • Rider Height: 197.5 cm.
  • Rider Weight: 106.2 kg.

Ability Parameters:

  • Punching Power: 39.9 t.
  • Kicking Power: 47.8 t.
  • Jump Height
    • Base Jump Height: 88 m.
    • Max Jump Height: 132 m.
  • Running Speed
    • Base Running Speed: 100 m. per 1.2 sec.
    • Maximum Running Speed: 100 m. per 0.8 sec.

RabbitRabbit Form (ラビットラビットフォーム Rabitto Rabitto Fōmu) is one of Build's upgraded super forms, based on the Rabbit Halfbody. It is accessed by upgrading RabbitTank Hazard Form with the FullFull RabbitTank Bottle, set to its Rabbit mode, hence known as the Crimson Speedy Jumper (紅のスピーディージャンパー Kurenai no Supīdī Janpā).

In this form, Build can not only run faster, and jump higher than he could in RabbitTank Sparkling form, but he can also stretch his limbs at will. Strengthening materials inside the chest piece of RabbitRabbit allow the user to increase its reaction time, jumping height, running speed up to a maximum of 1.5x.

In RabbitRabbit Form, Build is armed with and protected by the Rapid Rabbit Shoulders (BLDラピッドラビットショルダー BLD Rapiddo Rabitto Shorudā), the Speed Chest Armor (スピーディーチェストアーマー Supīdī Chesuto Āmā), the arm-mounted Hop Pop Gauntlets (ホップポップガントレット Hoppu Poppu Gantoretto) and the leg-mounted Jump Champ Leggers (ジャンプチャンプレガース Janpu Chanpu Regāsu).

The Hop Pop Gauntlets and Jump Champ Leggers contain Dimension Springers (ディメンションスプリンガー Dimenshon Supuringā) that enable long distance stretching.

On the back of RabbitRabbit Form is the cape-like Mufflerabbit Accelerator (マフラビットアクセラレーター Mafura Bitto Akuserarētā), which enables Build to run around at supersonic speeds thanks to an inbuilt propulsion accelerating device.

  • Build Driver finisher:
    • RabbitRabbit Finish (ラビットラビットフィニッシュ Rabitto Rabitto Finisshu): Jumping into the air, Build stretches his leg towards the opponent, and pulling his body towards his foot, connects with the target, with the resulting impact sending his opponent flying.
  • Fullbottle Buster finishers:
    • Fullbottle Break (フルボトルブレイク Furubotoru Bureiku): Build channels the power of a single Fullbottle for either a powerful slash or a powerful shot.
    • Just Match Break (ジャストマッチブレイク Jasuto Matchi Bureiku): Build channels the power of two Fullbottles for a powerful attack.
      • Buster Cannon Mode
        • Rabbit + Panda: Build fires a ball of red and white energy mixed together.
        • Rocket + Jet: Build fires a ball of cyan energy.
    • Miracle Match Break (ミラクルマッチブレイク Mirakuru Matchi Bureiku): Build channels the power of three Fullbottles for a powerful attack.
      • Buster Cannon Mode
        • Rabbit + Panda + Taka: Build fires a ball of red and white energy mixed together that gives off orange energy shockwaves upon impact.
    • Ultimate Match Break (アルティメットマッチブレイク Arutimetto Macchi Bureiku): Build channels the power of four Fullbottles for a powerful attack.
    • FullFull Match Break (フルフルマッチブレイク Furu Furu Matchi Bureiku): Build channels the power of the FullFull RabbitTank Bottle for a powerful attack
      • Buster Blade Mode
        • Rabbit Mode: This finisher has two variations:
          • Build runs at the enemy at high speeds, and delivers a slash with the blade covered in red energy.
          • Build performs a 360 degree spinning slash covered in red energy that is capable of hitting multiple enemies

Appearances: Build Episodes 27-36, 38-40, 45, Be The One

TankTank Form
KRBu-Buildtanktank

TankTank Form

"Tank and Tank! Build up! Are you ready? Overflow! (Techno rock music) Koutetsu no blue warrior! TankTank! Yabei! Tuei![6]"
―Transformation announcement[src]

Rider Statistics

  • Rider Height: 197.5 cm.
  • Rider Weight: 145.3 kg.

Ability Parameters:

  • Punching Power
    • Base Punching Power: 47 t.
    • Maximum Punching Power: 70.5 t.
  • Kicking Power
    • Base Kicking Power: 53.7 t.
    • Maximum Kicking Power: 80.55 t.
  • Maximum Jump Height: 58 m.
  • Maximum Running Speed: 100 m. per 1.1 sec.

TankTank Form (タンクタンクフォーム Tanku Tanku Fōmu) is one of Build's upgraded super forms, based on the Tank Halfbody. It is accessed by upgrading RabbitTank Hazard Form with the FullFull RabbitTank Bottle, set to its Tank mode, hence known as the Blue Warrior of Steel (鋼鉄のブルーウォーリアー Kōtetsu no Burū Wōriā).

In this form, Build's armor becomes significantly denser and is covered in tank treads and turrets to boost his attacks and defenses. Strengthening materials inside the chest piece of TankTank allow the user to increase its punching and kicking power up to a maximum of 1.5x.

In TankTank Form, Build is armed with and protected by the BLD TankTank Shoulders (BLDタンクタンクショルダー BLD Tanku Tanku Shorudā), the Warrior Chest Armor (ウォーリアチェストアーマー Wōriā Chesuto Āmā), the arm-mounted Fight Might Gauntlets (ファイトマイトガントレット Faito Maito Gantoretto) and the leg-mounted Dash Mash Leggers (ダッシュマッシュレガース Dasshu Masshu Regāsu).

The Fight Might Gauntlets and Dash Mash Leggers contain Blue Tank Rollers (ブルータンクローラー Burū Tanku Rōrā), which are the tank tread-like units on the forearms and shins, and enable high-speed cutting power.

  • Build Driver finisher:
    • TankTank Finish (タンクタンクフィニッシュ Tanku Tanku Finisshu):
  • Fullbottle Buster finishers:
    • Fullbottle Break (フルボトルブレイク Furubotoru Bureiku): Build channels the power of a single Fullbottle for a powerful attack.
      • Buster Cannon Mode
        • Spider: Build fires a blast of purple energy that transforms into a web to trap the target.
        • Magnet: Build fires a blue energy magnet that pulls enemies towards each other to the point where they implode.
        • Dryer: Build fires a ball of red energy that transforms into a stream of heat which continuously burns the target.
    • Just Match Break (ジャストマッチブレイク Jasuto Matchi Bureiku): Build channels the power of two Fullbottles for a powerful attack.
    • Miracle Match Break (ミラクルマッチブレイク Mirakuru Matchi Bureiku): Build channels the power of three Fullbottles for a powerful attack.
    • Ultimate Match Break (アルティメットマッチブレイク Arutimetto Macchi Bureiku): Build channels the power of four Fullbottles for a powerful attack.
      • Buster Cannon Mode
        • Tank + Jet + Gatling + Rocket: Build fires a ball of blue, gray, and white energy with the images on Bottles mixed together that gives off cyan energy shockwaves upon impact.
    • FullFull Match Break (フルフルマッチブレイク Furu Furu Matchi Bureiku): Build channels the power of the FullFull RabbitTank Bottle for either a powerful slash or a powerful shot.
      • Buster Cannon Mode
        • Tank Mode: This finisher has two variations:
          • Build's lower body transforms into a pair of tank treads, the cannons on his shoulder armor flips forward, and Build rolls around the battlefield while dealing out multiple continuous shots to its target, ending the barrage with a large blast of energy that gives off blue electricity
          • Build fires a blue energy ball that creates shockwaves upon impact.

Appearances: Build Episodes 28-33, 35-36, 40, 43-44, Be The One



Genius Form
KRBu-Buildgenius

Genius Form

"Genius! Are you ready? Kanzen muketsu no bottle yarou! Build Genius! Sugei! Monosugei!"
―Transformation announcement[src]

Rider Statistics

  • Rider Height: 196.4 cm.
  • Rider Weight: 105.6 kg.

Ability Parameters:

  • Punching Power: 55.7 t.
  • Kicking Power: 61.1 t.
  • Maximum Jump Height: 86.3 m.
  • Maximum Running Speed: 100 m. per 0.9 sec.

Genius Form (ジーニアスフォーム Jīniasu Fōmu)[7] is Build's final form, accessed by using the Genius Fullbottle in the Build Driver. It is hence known as the Completely Flawless Bottle Guy (完全無欠のボトル野郎 Kanzen Muketsu no Botoru Yarō).

Genius Form is more balanced compared to RabbitRabbit Form and TankTank form, having a punching and kicking power lower than TankTank's maximum capabilities and a jumping height and running speed lower than RabbitRabbit's maximum capabilities. In this form Build was able to easily defeat Kamen Rider MadRogue. However, he has weaker punching and kicking power than all of Evol's forms and is surpassed by Evol Black Hole Form in all categories.

In this form Build is able to utilize bursts of extreme speed and his reaction time is heightened to the point where enemy attacks appear to him to be moving in slow motion. He is also able to utilize the powers and abilities of any of the 60 main Fullbottles. Build's most powerful asset in this form, however, is the ability neutralize Nebula Gas in its various forms. He is able to neutralize the Nebula Gas in the cells of his opponents, as he was able to defeat Yoshiko Tajimi as the Owl Lost Smash without the risk of her dying due to overexposure to the gas. This was also seen when his attacks caused Kamen Rider MadRogue to collapse with his armor emitting electric sparks. In this form Build is also able to neutralize the essence of Lost Fullbottles, as when he defeats a Lost Smash, the Lost Fullbottle it used to transform turns completely black. This ability is also seen when Evolto tries to turn Sento into a Lost Smash with the Castle Fullbottle, but to no effect.

Build continues to wield the Fullbottle Buster in this form.

  • Build Driver finishers
    • Genius Attack (ジーニアスアタック Jīniasu Atakku): Build channels the energy of all 30 organic Fulbottles, making the red, magenta, and orange parts of his body glow before delivering a punch covered in red energy.
    • Genius Break (ジーニアスブレイク Jīniasu Bureiku): Build channels the energy of all 30 inorganic Fullbottles, making the blue, cyan, and violet parts of his body glow before delivering a side kick covered in blue energy that creates a shockwave upon impact and sends the enemy flying.
    • Genius Finish (ジーニアスフィニッシュ Jīniasu Finisshu): This finisher has three variations:
      • Build performs an enhanced version of RabbitTank Form's Vortex Finish, with the graph being rainbow colored and Build emitting rainbow-colored gas in order to accelerate into the enemy.
      • Build performs a side kick covered in red, blue, and gold sparks of energy that creates a swirling, rainbow-colored shockwave upon impact.
      • Build delivers a punch that creates a swirling, rainbow-colored shockwave upon impact.
  • Fullbottle Buster finishers
    • FullFull Match Break (フルフルマッチブレイク Furu Furu Matchi Bureiku): Build channels the power of the FullFull RabbitTank Bottle for a powerful attack.
      • Buster Blade Mode: Build unleashes a green energy slash that travels through the air.
      • Buster Cannon Mode: Build fires a rainbow energy ball that creates shockwaves upon impact.

Appearances: Build Episodes 39-45, Be The One, Build 46-48


These forms are accessed through Fullbottles either not used or unavailable 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? (Upbeat brass music) Hachimitsu high vision! KumaTelevi! Yeahhh!"
―KumaTelevi's transformation announcement[src]

KumaTelevi Form (クマテレビフォーム Kuma Terebi Fōmu) is Build's marigold 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 a Hokuto Best Match, and is themed after a bear and a television.

In this form, Build gains assistance from an AI in the suit known as Televi-san (てれびさん Terebisan). He can also temporarily enlarge himself simply by projecting an energy barrier in the shape of the bear crossing sign on his chest, and then running through it.

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 throws a ball of honey-like energy at the enemy that solidifies in front of it before running up to the enemy for a slashing maneuver with his claws.

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

Trial Forms
"Kuma! (Inorganic Fullbottle name)! Are you ready? (Funky music)"
―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.