This article is about a/an rider form used by several identities in Kamen Rider OOO.

Kamen Rider Birth

Kamen Rider Birth (仮面ライダーバース Kamen Raidā Bāsu) is the second Kamen Rider featured in Kamen Rider OOO with the identity used by several different people in the series, created by Doctor Maki as part of the Kougami Foundation's Medal System. Chronologically the first user was Nobunaga who used it to battle one of the Pteranodon Yummy and later by Shintaro Goto. It first appeared in the series and to Kamen Rider OOO by Akira Date. The suit's name comes from the English word "birth" and his motifs are gashapon machines, a birthday cake, and a scorpion. Birth's first appearance is in Kamen Rider × Kamen Rider OOO & W Featuring Skull: Movie War Core as Nobunaga.[1]

In the Kamen Rider OOO WONDERFUL: The Shogun and the 21 Core Medals, Eiji Hino temporarily used the Birth System to battle against Nue Yummy when most of his Core Medals were taken.


W Birth

Birth Protortype (Akira Date) and Birth (Shintaro Goto) standing side by side.


Kamen Rider Birth's ending theme is entitled "Reverse/Re:birth".

Birth Prototype
KR-Birth Prototype

Birth Prototype


  • Height: 199 cm[2]
  • Weight: 92 kg[2]

Ability Perimeters:

  • Punch power: 3.5 t[2]
  • Kick power: 8 t[2]
  • Jump power: 45 m[2]
  • Speed: 100 m/5 s[2]

Kamen Rider Birth Prototype (仮面ライダーバース・プロトタイプ Kamen Raidā Bāsu Purototaipu), or Kamen Rider Proto Birth (仮面ライダープロトバース Kamen Raidā Puroto Bāsu), is the first design of the Kamen Rider Birth System using an early version of the Birth Driver. Its full combat capabilities are not known because it was designed to only operate at 70% power for testing and nearly all of its features are still set up for data collection. The Birth Prototype's design differs from the standard Kamen Rider Birth armor by having a series of markings known as Optical Markers (オプティカルマーカー Oputikaru Mākā), which include various sensors used in the early test stages, and are a bright red to show up more easily on camera. It cannot access all of the Birth CLAWs units, and is only compatible with the Crane Arm and Breast Cannon. Shintaro Goto first uses the Prototype system after the production version is heavily damaged in the final fight with Kazari. Later, Akira Date returns to Japan and became user of Prototype Version to end the Greeed conflict. However, in the Movie War Mega Max, Prototype is damaged beyond repair when its Birth Driver is heavily damaged by Kamen Rider Poseidon.


Kamen Rider Birth

Akira Date in Birth

Akira Date's face in Birth Helmet

Shintaro Goto in Birth

Shintaro Goto's face in Birth Helmet


  • Height: 199 cm[3]
  • Weight: 92 kg[3]

Ability Perimeters:

  • Punch power: 3.5 t[3]
  • Kick power: 8 t[3]
  • Jump power: 45 m[3]
  • Speed: 100 m/5s[3]

Like Kamen Rider OOO, Kamen Rider Birth's powers stem from the O Medals that power the Greeed and their Yummy creations. However, Kamen Rider Birth's powers originate solely from the Kougami Foundation's technology developed by Kiyoto Maki to utilize the power of the Cell Medals. On Birth's armor there are capsules called Receptacle Orbs (リセプタクルオーブ Riseputakuru Ōbu), in which the Birth CLAWs system is installed in until a Cell Medal is used to summon the weapons. However, due to using Cell Medals as opposed to Core Medals, Birth was at a disadvantage against a single Greeed. Kamen Rider Birth's exosuit has originally an self-destruct function built into it. However, the self-destruct function was disabled by Shintaro Goto when Kiyoto Maki defected to Greeed side.

Crane Arm

Crane Arm

"Crane Arm!"
―Activation announcement[src]

The green Crane Arm (クレーンアーム Kurēn Āmu) unit, referred to as the "Springer Haken" (シュプリンガーハーケン Shupuringā Hāken, "Jumper Hook" in German), is a powerful winch attachment that is contained in the Receptacle Orb on Kamen Rider Birth's right shoulder. The winch allows him to scale buildings as well as collecting any leftover Cell Medals with one sweep. As a weapon, it can be used as a whip to damage opponents from far. This unit is first used by Nobunaga to fight the Pteranodon Yummy in Movie War Core. When CLAWs Sasori is activated, the Crane Arm forms the tail.

Breast Cannon

Breast Cannon

"Breast Cannon!"
―Activation announcement[src]

The red Breast Cannon (ブレストキャノン Buresuto Kyanon) unit, referred to as the "Salamander Launcher" (サラマンダランチャー Saramanda Ranchā), is a powerful energy cannon that is held in the Receptacle Orb on Kamen Rider Birth's chest. Due to its size, using it hinders Kamen Rider Birth's mobility. The cannon can be charged up to multiple levels of power by using additional Cell Medals. When CLAWs Sasori is activated, the Breast Cannon forms the head.

Drill Arm

Drill Arm

"Drill Arm!"
―Activation announcement[src]

The blue Drill Arm (ドリルアーム Doriru Āmu), referred to as the "Brighton Bit" (ブライトンビット Buraiton Bitto), is held in the Receptacle Orb on Kamen Rider Birth's right forearm. Its powerful drill bit can extract Cell Medals from the bodies of Greeed and Yummy. It was eventually upgraded by Doctor Maki to increase its power after it got broken, allowing it to tear enough Cell Medals out of Kazari's hybrid Yummy to reduce them to a normal one. The Drill Arm can also be combined with the Crane Arm by activating both simultaneously, allowing Birth to use it as a powerful ranged attack. When CLAWs Sasori is activated, the Drill Arm forms the stinger.

Catepillar Leg

Catepillar Leg

"Catepillar Leg!"
―Activation announcement[src]

The purple Catepillar Leg (キャタピラレッグ Kyatapira Reggu), referred to as the "Haze Crawlers" (ヘイズクローラー Heizu Kurōrā), are held in Receptacle Orbs on Kamen Rider Birth's legs, and allow him to move easily over tough terrain and execute heavy kicks and grind on opponents using its tracks. When CLAWs Sasori is activated, the Caterpillar Legs form the lower body.

Shovel Arm

Shovel Arm

"Shovel Arm!"
―Activation announcement[src]

The orange Shovel Arm (ショベルアーム Shoberu Āmu), referred to as the "Vermillion Bucket" (バーミリオンバケット Bāmirion Bakketo), is held in the Receptacle Orb on Kamen Rider Birth's left forearm, increasing his power to where he can lift Yummy off of the ground with it. When CLAWs Sasori is activated, the Shovel Arm forms the right claw.

Cutter Wing

Cutter Wing

"Cutter Wing!"
―Activation announcement[src]

The yellow Cutter Wing (カッターウイング Kattā Uingu), referred to as the "Solent Edges" (ソレントエッジ Sorento Ejji), is held in the Receptacle Orb on Kamen Rider Birth's back, allowing him to fly. The unit can also magnetically collect Cell Medals by flying over them. It can also be used as an over-sized boomerang. When CLAWs Sasori is activated, the Cutter Wing forms the left claw.

Birth Day
Birth day

Birth Day


  • Height: 250 cm[4]
  • Weight: 155 kg[4]

Kamen Rider Birth Day (仮面ライダーバース・デイ Kamen Raidā Bāsu Dei) is the name for when all six Birth CLAWs units are summoned and attached to Kamen Rider Birth. Costing six Cell Medals, it is extremely risky when Kamen Rider Birth activates this combination on his own and requires Kamen Rider OOO to back him up. This form can also perform a powerful attack called Cell Bash (セルバッシュ Seru Basshu), where the Breast Cannon fires a powerful energy blast without the expenditure of any Cell Medals.


Kamen Rider Rebirth


  • Height: 201 cm
  • Weight: 98 kg

Ability Perimeters:

  • Punch power: 5 t
  • Kick power: 12 t
  • Jump power: 9 m
  • Speed: 100m/4.5s

In Kamen Rider Wizard's S.I.C. Hero Saga, Akira Date transforms into a new form of Birth known as Kamen Rider Rebirth (仮面ライダーリバース Kamen Raidā Ribāsu).

As a upgraded version of Birth System, Rebirth has greatly improved the combat ability. This form able use heavier weapons which seems modified from Birth CLAWs, including a large scissor mounted on the left forearm, a pair of blades mounted on waist and functioned as stabilizer when not in use, also a large cannon extended from its backpack.

However, the improvement of combat ability replaced the versatility of original Birth System. Since the Rebirth suit make a heavy cost to user's stamina, it can only operate in 15 minutes.





Legend Rider Devices

KR Birth Card

Kamen Ride: Birth

The Birth Rider Card, containing the power of Kamen Rider Birth. Used by Diend to summon Kamen Rider Birth.

This Rider Ring which bears the likeness of Kamen Rider Birth appears in Movie War Ultimatum, where it is used to summon Birth to the Underworld alongside the Rings of Kamen Riders Double, Accel, and OOO.

A premium version of this Wizard Ring was later released as part of Kamen Rider Wizard's Wizard Ring toyline.

KRZiO-Birth Ridewatch

Birth Ridewatch

Birth Ridewatch (バースライドウォッチ Bāsu Raido Wotchi): Based on Kamen Rider Birth, this Ridewatch would provide access to the BirthArmor.[5]


  1. Hyper Hobby, January 2011
  2. 2.0 2.1 2.2 2.3 2.4 2.5 "TV Asahi's page for Birth Prototype". 
  3. 3.0 3.1 3.2 3.3 3.4 3.5 "TV Asahi's page for Birth". 
  4. 4.0 4.1 "TV Asahi's page for Birth Day". 
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