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

"I've finally obtained it... the power of destruction!"

Kengo Ino (伊能 賢剛, Inō Kengo) is the main antagonist of Kamen Rider Build: Be The One. He was a former INSET astronaut who was possessed during the Kiwami Project by a member of the Blood Tribe, and secretly helped Evolto ignite the Japanese Civil War. As the governor of Touto, he manipulated the public to turn against Sento Kiryu, stealing his Hazard Trigger during an encounter and Ryuga Banjo's Great Cross-Z Dragon to become Kamen Rider Blood (仮面ライダーブラッド, Kamen Raida Buraddo).


Before Seito.jpg
Blood mind control.jpg

Kengo Ino was at the press conference, saying that it is time for peace to come. He says that Kamen Riders must become extinct and the crowd chants extinction. He uses his ability to manipulate the civilians who fell silent and begin walking off different directions, entirely noiseless.

Kengo, alongside the other governors, had a meeting with Evolto and were revealed to be the Blood Tribe, survivors of the same race as Evolto who aim to destroy the planet and consume it. It is also revealed that they had been acting in the shadows ever since the Sky Wall appeared and manipulated each territory during the war until Evolto changed his mind and their plans were disrupted. Evolto tells them he won’t interfere but reminds them he has the upper hand with the power of the Pandora Box.

Sento then meets the mind controlled Ryuga and Kengo. After fighting, Ryuga beats Sento and takes the Hazard Trigger. Kengo then absorbs Ryuga along with the Scissors and Zebra Lost Smash, then uses the Hazard Trigger, Cobra Lost Fullbottle, and Great Cross-Z Dragon with Ryuga's Build Driver to become Kamen Rider Blood. He easily defeats Sento, but before he can deal the final blow, Evolto appears and takes Sento away.

Ryuga, Kengo, Mitsuomi, and Ryoka are outside, surrounded by civilians under their control. Sento arrives on his bike with the Pandora Box. Kengo becomes Kamen Rider Blood and Sento transforms into Build Genius Form. Kengo reveals that his encounter with Ryuga was orchestrated and they proceed to fight. Sento manages to pull Ryuga out of Blood's grasp. However, Blood takes the Pandora Box down into the ground, heading for the center of the Earth so that he can destroy the planet. Misora uses her powers to free Ryuga from Kengo’s control.

Blood is defeated and killed by Build Cross-ZBuild Form.

Sento and Ryuga, in the Build Cross-ZBuild Form, head down to fight Blood, and while they initially struggle to control their new form, they force Blood back to the surface and defeats him with the Love & Peace Finish.

Video Game Appearances

Kamen Rider Battle Rush

Kamen Rider Blood appears as a playable and support character in the video game Kamen Rider Battle Rush using Rider punch.

Kamen Rider Buttobasoul

Kamen Rider Blood medal

Kamen Rider Blood is a playable character in Kamen Rider Buttobasoul.

Kamen Rider Blood

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[1]:

  • 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.[2] 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.

Synthetic Material

The following people were absorbed during Kengo Ino's transformation into Kamen Rider Blood. Although the three are fused with Blood, they are not fully conscious and Ino is solely the one in control.



Behind the Scenes


Kengo Ino is portrayed by Masanobu Katsumura (勝村政信, Katsumura Masanobu). As Kamen Rider Blood, his suit actor is Yasuhiko Imai (今井 靖彦, Imai Yasuhiko) [4].


  • Kamen Rider Blood's rider form uses parts from other riders in Kamen Rider Build:




Icon-build.png Kamen Rider Build
Kamen Riders
Sento Kiryu (Takumi Katsuragi) - Ryuga Banjo - Kazumi Sawatari - Gentoku Himuro - Evolto - Nariaki Utsumi - Shinobu Katsuragi
Movie-exclusive: Kengo Ino - Killbus - Keiji Uraga
Drivers/Transformation Gear
Build Driver - Transteam Gun - Nebulasteam Gun - Sclash Driver - Evol-Driver
Transformation Devices
Fullbottles - (Great) Cross-Z Dragon - Sclashjellies - Hazard Trigger - Cross-Z Magma Knuckle - Evol-Trigger - Grease Blizzard Knuckle - Killbuspider - Grease Perfect Kingdom
Drill Crusher - Hawk Gatlinger - 4Koma Ninpoutou - Kaizoku Hassyar - Fullbottle Buster - Steam Blade - Beat Closer - Twin Breaker - Muscle Glove - Solstall Wings - Giant Scratcher - Space Ride Arm - Spine Knuckle - Long Range Cleaner - Trash Converter - Gold Lio Gauntlet - Multi Deluge Gun
Pandora Box - Halfbodies - Fullbottle Holder - Build Phone
Vortex Finish - Hazard Level - Project Build - Sky Wall - Nebula Gas
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)