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Zi-O
Icon-zi-o
This article is about a/an rider in Kamen Rider Zi-O.

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

"The rules of victory have been set!"
―Build's catchphrase when he has an advantage or before he perform a finisher[src]

In 2017, Sento Kiryu (桐生 戦兎 Kiryū Sento) was Kamen Rider Build (仮面ライダービルド Kamen Raidā Birudo), until the creation of Another Build erased the Rider's history, reverting him back to Takumi Katsuragi (葛城 巧 Katsuragi Takumi).

History

2017

Due to Heure creating Kaijin Rider Another Build in the time-stream, it resulted in Another Build's powers coming into conflict with Sento's powers as Build, and later Ryuga Banjo in extension due to the temporal disruptions. After Zi-O gained the Build Armor, the Rider would uses Build's power the defeat the imposter. After Another Build's defeat, Sento and Ryuga lost their memories and Sento reverted to Takumi. Sougo Tokiwa gives "Takumi" and Ryuga each a blank Ridewatch, which Takumi walks off in awe of the device.

2018

"I'll leave my past self to you."
―Sento to Sougo as he re-entrusts the Ridewatches to Sougo[src]
One year later, "Takumi" and Ryuga returned to Nascita after a Tsunagizu concert at the Nippon Budokan. However when they arrive, Sougo Tokiwa was there as well, but Sento and Ryuga did not recognize him until they pull out their blank Ridewatches (that Sougo gave them the year before), and transformed themselves into the Build and Cross-Z Ridewatches, which would temporarily restore Sento and Ryuga's memories. Remembering the events from last year, Sento entrusts the Ridewatches to Sougo so he can go back in time and defeat Another Build.

Forms

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:

  • Punching Power: 9.9 t. (right arm)/17 t. (left arm)
  • Kicking Power: 23.7 t. (right leg)/17.8 t. (left leg)
  • Maximum Jump Height: 55 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 a Touto Best Match, and is themed after a rabbit and a tank.

Being Build's most balanced (and second fastest) form, RabbitTank is the Best Match form favored by Sento, 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, 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. In the final episode, Build uses the Fullbottle Buster while in this form.

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 Mode: Build channels the energy of a Fullbottle in his Drill Crusher and performs a powerful slash.
        • Biotic:
          • 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.
        • Abiotic:
          • Rocket: The Drill Crusher charges at the enemy and attacks like a rocket.
      • Gun Mode: 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.
  • Fullbottle Buster finisher:
    • 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 Blade Mode
        • Gold Rabbit + Silver Dragon: Build jumps into the air and performs a powerful downward slash covered in gold and silver energy, followed by two horizontal slashes.

Appearances: Zi-O Episodes 1-2

Equipment

Devices

Weapons

Handheld weapons:

Suit-equipped weapons:

  • Rabbit Foot Shoes - Build's rabbit-like spring shoe accessed by any form that uses the Rabbit Fullbottle.
  • Tank Roller Shoes - Build's tank-like tread shoe accessed by any form that uses the Tank Fullbottle.


Vehicles

Relationships

  • Sougo Tokiwa/Kamen Rider Zi-O: Sento first meets Sougo when the young boy arrived in his timeline after a shuffle with Geiz. Sougo claimed he was from the future, and Sento confirmed it after coming out of his laboratory and investigating Sougo's Ridewatch. Later when Another Build began to attack, Sougo returned as a Kamen Rider and mysteriously had a portion of Kamen Rider Build's power, allowing him access to Zi-O Build Armor. Sento watches as Zi-O battles Another Build, later becoming unimpressed of the equations that appeared as Zi-O performed his Vortex Time Break. After Another Build's defeat, Sento became Takumi Katsuragi and both him and Ryuga had lost their memories as Kamen Riders. Sougo then gives both Sento and Ryuga each a blank Ridewatch, and asks them to hold on to it as it'll connect to him in the future, but they soon lose their memories of Sougo as well. One year later, Takumi and Ryuga return to Nascita after a concert by Taro Satou, only to find Sougo in the cafe. With Sougo's presence, the Ridewatches that Sougo (from the future) gave them, reacted and transformed themselves into the Build and Cross-Z Ridewatches. Regaining his memories of what happened last year, Sento smiled, knowing that this Sougo wasn't the same as the one he had already met, and entrusted him with the two Ridewatches, asking him to take care of his past self. Sougo would return to the past and repeat the events that Sento had already remembered, resulting in an endless timeloop.

Behind the Scenes

Portrayal

Sento Kiryu, as well as Takumi Katsuragi, is portrayed by Atsuhiro Inukai (犬飼 貴丈 Inukai Atsuhiro). As Kamen Rider Build, his suit actor is Yuji Nakata (中田 裕士 Nakata Yuji).

Notes

  • Despite Build's history was erased, Sento/Katsuragi still keeps Taro Sato's face, a fact that was acknowledged in Episode 2.5 Rules of the World. Although one explanation might be suggested is that it could be a result of undisclosed space-time anomalies.

Appearances

References

Sougo Tokiwa (Ohma Zi-O, Mirror World, Leader of Quartzer) - Geiz Myokoin - Woz (black, white, red) - Tsukuyomi
Future Kamen Riders
2022: Rentaro Kagura - Isamichi Konjo
2040: Mondo Douan
2121: Rento Makina
Ginga
Rider Time Ryuki Riders
Ishihashi - Tozuka - Kimura - Ishida - Abyss - Odin
Another World Riders
G4 - Fuma - Dark Ghost - Rey - Katsumi Daido - White Woz - Yuuki
Other Riders
G3 Team - Shun Kageyama (Worm)
Movie-exclusive Riders
SOUGO Tokiwa - Kagen - Jogen
Stageshow-exclusive Riders
Hiryu Kakogawa - Red Woz
Ziku-Driver - Ohma Zi-O Driver - Ridewatches - BeyonDriver - Mirai Driver (Shinobi, Hattari, Quiz, Kikai, Ginga) - Zikan Girade - Zikan Zax - Ride HeiSaber - Zikan Despear - Saikyo Girade - Zikan Jaclaw - Faizphone X - Taka Watchroid - Kodama Suika Arms - Ride Striker - Time Mazine - Kurogane Oogama - Unnamed Giant Wasp Mecha - Neo Decadriver - Neo Diendriver
Others/Terminology
Rider Armors - Ridewatch Holder - Oma Advent Calendar - Future Note - Time Finishers
Allies
9 5 DO: Geiz Myokoin - Tsukuyomi - Junichiro Tokiwa
Others
Futaros - Ataru Hisanaga - Shingo Hisanaga - Iroha Kagura - Master Gamano - Sara - Ms. Sailor - Oda Nobunaga - Clara Steinbelt - Gyuzo - Pietro
Resistance: Resistance Captain
Kuuga: Yusuke Godai
Agito: Shouichi Tsugami - Takahiro Omuro
Ryuki: Shinji Kido - Dark Shinji - Ren Akiyama - Takeshi Asakura - Miyuki Tezuka - Jun Shibaura - Goro Yura
555: Takumi Inui - Masato Kusaka
Blade: Kazuma Kenzaki - Hajime Aikawa
Hibiki: Hitoshi Hidaka - Tomizo Todayama - Kyosuke Kiriya
Kabuto: Souji Tendou - Arata Kagami - Sou Yaguruma
THE FIRST/THE NEXT: Takeshi Hongo - Katsuhiko Yano - Shiro Kazami
Den-O: Ryotaro Nogami - Yuto Sakurai
Kiva: Wataru Kurenai - Jiro
Decade: Tsukasa Kadoya - Daiki Kaito
G: Goro
W: Philip & Shotaro Hidari - Ryu Terui
OOO: Eiji Hino - Michal Minato - Akira Date
Fourze: Gentaro Kisaragi
Wizard: Haruto Soma - Kosuke Nitoh
Gaim: Kouta Kazuraba - Kaito Kumon - Takatora Kureshima
Drive: Shinnosuke Tomari - Go Shijima - Chase - Brain
Ghost: Takeru Tenkuji - Makoto Fukami
Kuuga (manga): Yusuke Godai
Amazons: Haruka Mizusawa - Jin Takayama
Ex-Aid: Emu Hojo - Hiiro Kagami - Kuroto Dan
Kamen Sentai Gorider: Aka-Rider - Ao-Rider - Ki-Rider - Momo-Rider - Mido-Rider
Build: Sento Kiryu - Ryuga Banjo - Kazumi Sawatari - Gentoku Himuro
Zero-One: Aruto Hiden
Others
Chuta Ohsugi - Daita Kondou - Chikao Nezu - Hina Izumi - Shibuya Hachioji - Narita Kisarazu - Misora Isurugi - Master of Fumen - Owner - Momotaros - Urataros - Kintaros - Ryutaros - Daisuke Okubo - Amane Kurihara - Mana Kazaya - Riki - Ramon - Deneb - Krim Steinbelt - Takeshi Kinashi
Swartz - Heure - Ora
Movie Exclusive
Tid
SOUGO Tokiwa - Kagen - Jogen - Woz
Another Build - Another Ex-Aid - Another Fourze - Another Faiz - Another Wizard - Another OOO - Another Gaim - Another Den-O - Another Double - Another Kuuga - Another Ghost - Another Shinobi - Another Quiz - Another Ryuga - Another Kikai - Another Zi-O (II) - Another Ryuki - Another Blade - Another Agito (troops) - Another Hibiki - Another Kiva - Another Kabuto - Another Drive - Another Decade - Another Diend
Stageshow-exclusive Another Riders
Another Rider - No Rider - Another Ohma Zi-O
Other Villains
Kasshine - Humanoise - Yaminin - Dustards - Worms
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