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Icon-build.png This article is about a/an character in Kamen Rider Build.

Ryoka Saiga (才賀 涼香 Saiga Ryoka) was a former astronaut and member of the Kiwami Project. After being possessed by a member of the Blood Tribe while on an expedition, she secretly worked alongside Taizan Himuro and Gentoku Himuro in Touto to help Evolto accomplish his goals and ignite the Japanese Civil War. When Evolto united the the three regions of Japan, Mitsuomi became the new governor of Hokuto. She uses the Hasami Lost Fullbottle to transform into the Scissors Lost Smash (シザーズロストスマッシュ Shizāzu Rosuto Sumasshu).

Character History

Sparks of War

Before Touto.jpg

After Taizan Himuro hospitalization, she told Gentoku that now is the time to start the war with Hokuto, thus creating the first sparks of Japanese Civil War right according to Blood Tribe plans. [1]Kamen Rider Build: Be The One

As Governor

Hokuto HQ.jpg

Scissors Lost Smash is defeated and killed by Kamen Rider Rogue.

Ultimately, "Ryoka" was defeated by Kamen Rider Rogue. Kamen Rider Build: Be The One


Scissors Lost Smash

Scissors Lost Smash

Scissors Lost Smash (シザーズロストスマッシュ Shizāzu Rosuto Sumasshu) fights using scissor-like blades. She can also create them to fire as projectiles or to use as a shield.

Kamen Rider Blood

Kamen Rider Blood

"Great Cross-Z Dragon! Build Up! Are you ready? Overflow! Wake up Cross-Z! Get great dragon! Buraburaburabura Bura~h! Yabei!"
―Transformation announcement[src]

Rider Statistics

  • Height: 197.5 cm.
  • Weight: 114.7 kg.

Ability Perimeters[2]:

  • Punching power: 61.3 t.
  • Kicking power: 67.1 t.
  • Maximum jump height: 82.5 m.
  • Maximum running speed: 100 m. per 0.9 sec.

Kamen Rider Blood's main form is accessed by attaching the Hazard Trigger to the Build Driver and inserting the Great Cross-Z Dragon, loaded with the Cobra Lost Fullbottle.[3] During Blood's transformation, the Scissors Lost Smash, Zebra Lost Smash and Ryuga Banjo fuse with Blood due to their Blood Tribe DNA, though Blood can still function with them separated. Though others are fused with Blood, Ino is always solely the one in control.

Kamen Rider Blood is stronger than Build Genius Form and easily overpowered it. Only by assuming Cross-ZBuild and combining his own power with Cross-Z's could Build defeat him. Just like Blood Stalk, Blood can summon energy cobras to assist him in battle.

Kamen Rider Blood consists of the following parts:

  • Blood Head (ブラッドヘッド Buraddo Heddo): Kamen Rider Blood's helmet.
    • Bloody Head Armor (ブラッディヘッドアーマー Buraddi Heddo Āmā): Armored parts to protect Kamen Rider Blood's helmet. The increased durability allows Blood to slowly close the distance between him and his attacker.
    • Twin Eye DragCobra (ツインアイドラグコブラ Tsuin' Ai DoraguKobura): The eyes of Kamen Rider Blood. Increases hit rate and reaction time to attacks.
    • Dangerous Enhancer (デンジャラスエンハンサー Denjarasu Enhansā): A device on Kamen Rider Blood's head. It stimulates fighting instinct and raises attack power. If it is used by a normal human, their mind would be overloaded.
    • BD Signal (BDシグナル BD Shigunaru): Data collection device in Blood's helmet that collects battle data and repairs the suit if damaged.
    • DragCobra Face Module (ドラグコブラフェイスモジュール DoraguKobura Feisu Mojūru): Kamen Rider Blood's combined sensor. It can communicate with the Xenovede Snake during the battle, and can also quickly find out the creatures and combat machines that resist themselves.
  • Bloody Chest Armor (ブラッディチェストアーマー Buraddi Chesuto Āmā): Kamen Rider Blood's chest armor. The increased durability allows Blood to slowly close the distance between him and his attacker. A special conversion furnace is built into its core, allowing him to summon the Xenovede Snake using the components of the Cobra Lostbottle to attack his enemies.
  • BD Unlimited Suit (BDアンリミテッドスーツ BD Anrimiteddo Sūtsu): Shock resistant bodysuit of Kamen Rider Blood. It can release the physical limiter and unleash the hidden physical ability of the user while offering protection from damage.
  • BD Vector Mantle (BDベクターマント BD Bekutā Manto): Kamen Rider Blood's cape. It allows him to float in the air and control the gravity of his surroundings.
  • BD Execution Shoulder (BDエグゼキューションショルダー BD Eguzekyūshon Shorudā): Kamen Rider Blood's shoulder armor. They release a strengthening agent during the finishing attack to strengthen the body. They can also expand a dimensional barrier to cancel out enemy attacks.
  • Tribe Rush Arm (トライブラッシュアーム Toraibu Rasshu Āmu): Kamen Rider Blood's arms. The strengthening agent has increased the user's strength, allowing them to destroy the enemy without mercy. They also allow Kamen Rider Blood to move objects at will using a special aura.
  • BD Deadly Glove (BDデッドリーグローブ BD Deddorī Gurōbu): Kamen Rider Blood's gloves. They are reinforced and allow him to disassemble/disperse objects in contact with his fists.
  • Tribe Rush Leg (トライブラッシュレッグ Toraibu Rasshu Reggu): Kamen Rider Blood's arms. The strengthening agent has increased the user's strength, allowing them to destroy the enemy without mercy. They also allow Kamen Rider Blood to increase his own speed using a special aura.
  • BD Vanish End Shoes (BDヴァニッシュエンドシューズ BD Vu~anisshu Endo Shūzu): Kamen Rider Blood's shoes. They are reinforced and allow him to disassemble/disperse objects in contact with his soles.

Kamen Rider Blood is exclusive to Kamen Rider Build: Be The One.



Behind the Scenes


Ryoka Saiga was portrayed by Rena Matsui (松井玲奈 Matsui Rena). As Scissors Lost Smash, her suit actor is Yasuaki Ishii (石井 靖見 Ishii Yasuaki)

Concept Art

Scissors Lost Smash concept art

Scissors Lost Smash was designed by Tamotsu Shinohara (篠原 保 Shinohara Tamotsu).


  • All of the Blood Tribe members seem to be male, with the one possessing Ryoka to be an exception.



External Link

Icon-build.png Kamen Rider Build
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Sento Kiryu (Takumi Katsuragi) - Ryuga Banjo - Kazumi Sawatari - Gentoku Himuro - Evolto - Nariaki Utsumi - Shinobu Katsuragi
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nascita: Misora Isurugi - Soichi Isurugi - Sawa Takigawa - Kazumi Sawatari - Gentoku Himuro
Kamen Riders: Eiji Hino - Gentaro Kisaragi - Kouta Kazuraba - Takeru Tenkuji - Emu Hojo - Hiiro Kagami - Taiga Hanaya - Kiriya Kujo - Kuroto Dan - Parado - Sougo Tokiwa - Geiz Myokoin - Tsukuyomi
Prime Ministers: Taizan Himuro (Touto) - Yoshiko Tajimi (Hokuto) - Masakuni Mido (Seito)
Namba Heavy Industries Ltd.: Juzaburo Namba - Nariaki Utsumi - Haruhiko Wanibuchi - Guardian
Hell Bro's: Fu Washio - Rai Washio - Yoshikazu Takahashi - Norio Matsui
Aliens: Vernage
Gentoku Himuro - Evolto - Nariaki Utsumi - Takumi Katsuragi - Shingo Kuwata - Eita Kawai - Yoshikazu Takahashi - Norio Matsui
Normal Smash: Fang Smash - Needle Smash - Strong Smash - Burn Smash - Flying Smash - Mirage Smash - Square Smash - Press Smash - Ice Smash - Stretch Smash
Empowered Smash: Strong Smash Hazard - Press Smash Hazard - Stretch Smash Hazard - Flying Smash Hazard
Hard/Hazard Smash: Castle Hard/Hazard Smash - Stag Hard/Hazard Smash - Owl Hard/Hazard Smash
Clone Smash: Press Clone Smash - Stretch Clone Smash - Strong Clone Smash - Flying Clone Smash
Lost Smash: Owl Lost Smash - Stag Lost Smash - Castle Lost Smash - CD Lost Smash - Scissors Lost Smash - Zebra Lost Smash
Foundation X
Kaisers: Kaisei Mogami (World of Build, World of Ex-Aid) - Nebula Bugster
Blood Tribe
Kengo Ino - Ryoka Saiga - Mitsuomi Gobara - Evolto - Killbus - Akaba (imitation) - Aoba (imitation) - Kiba (imitation) - Remocon Bro's (imitation) - Engine Bro's (imitation)
Down Fall
Keiji Uraga - Simon Marcus (Phantom Crusher)