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Icon-ooo.png This article is about a/an set of attachments in Kamen Rider OOO.

The Birth CLAWs (バース・CLAWs(クロウズ) Bāsu Kurōzu, Cannon/Leg/Arm/Wing System) is an armor system that consists of six armaments contained in Receptacle Orbs on the Kamen Rider Birth armor, created by Doctor Maki as part of the Kougami Foundation's Medal System. Using a unit requires a Cell Medal as payment for it to emerge and attach to the Recepable Orb it came out from. Furthermore, the Birth CLAWs are magnetic and thus attract Cell Medals to them. Kamen Rider Birth can also use two or more CLAWs units at once by inserting in more Cell Medals into the Birth Driver. If one of the weapons is damaged, it has to be taken to the Foundation for repairs.

Birth CLAWs

"Crane Arm!"
―Activation announcement[src]
  • The green Crane Arm (クレーンアーム Kurēn Āmu) unit is equipped with the Springer Haken (シュプリンガーハーケン Shupuringā Hāken, "Jumper Hook" in German), a powerful hook attachment that is connected to a wire housed in a winch above the shoulder. It is contained in the Receptacle Orb on Kamen Rider Birth's right shoulder and forms the CLAWs·Sasori's tail. The winch allows him to scale buildings as well as collect 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.[1]

"Breast Cannon!"
―Activation announcement[src]
  • The red Breast Cannon (ブレストキャノン Buresuto Kyanon) unit, incorporates the Salamander Launcher (サラマンダランチャー Saramanda Ranchā), a powerful energy cannon. It is held in the Receptacle Orb on Kamen Rider Birth's chest and forms the CLAWs·Sasori's body. Due to its size and location, using it hinders Kamen Rider Birth's mobility. The cannon can be charged up to multiple levels of power by using additional Cell Medals.[2]

"Drill Arm!"
―Activation announcement[src]
  • The blue Drill Arm (ドリルアーム Doriru Āmu) is equipped with the Brighton Bit (ブライトンビット Buraiton Bitto) drill bit at the end of the arm. It is held in the Receptacle Orb on Kamen Rider Birth's right forearm and forms the stinger on CLAWs·Sasori's tail. Its powerful drill bit can extract Cell Medals or even Core Medals from the bodies of Greeed and Yummy, while dealing serious damage to their bodies. It was eventually upgraded by 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 O-Yummy. 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.[3]

"Catepillar Leg!"
―Activation announcement[src]
  • The purple Catepillar Leg (キャタピラレッグ Kyatapira Reggu) are equipped with the Haze Crawlers (ヘイズクローラー Heizu Kurōrā), treads mounted on the bottom of the feet. They are are held in Receptacle Orbs on Kamen Rider Birth's legs and form CLAWs·Sasori's legs, and allow him to move easily over tough terrain, execute heavy kicks and grind on opponents using its tracks.[4]

"Shovel Arm!"
―Activation announcement[src]
  • The orange Shovel Arm (ショベルアーム Shoberu Āmu), is equipped with the Vermillion Bucket (バーミリオンバケット Bāmirion Bakketo) claw at the end of the arm. It is held in the Receptacle Orb on Kamen Rider Birth's left forearm and forms the CLAWs·Sasori's left pincer, increasing his power to where he can lift Yummy off of the ground with it. He can also slam it into foes for heavy attacks, powerful enough to smack the host out of the Lionkurage Yummy.[5]

"Cutter Wing!"
―Activation announcement[src]
  • The yellow Cutter Wing (カッターウイング Kattā Uingu) is composed of the two Solent Edges (ソレントエッジ Sorento Ejji) and is held in the Receptacle Orb on Kamen Rider Birth's back, allowing him to fly and cut opponents with the wings on it. It can also be used as an oversized boomerang and forms the CLAWs·Sasori's right pincer. The unit can also magnetically collect Cell Medals by flying over them.[6]

Net Movies

In the non-canon Kamen Rider OOO Allstars: The 21 Leading Actors and Core Medals net movie, Kamen Rider Birth is shown to summon ingredients of oden from the Receptacle Orbs.


Kamen Rider Birth·Day

Kamen Rider Birth·Day (仮面ライダーバース・デイ Kamen Raidā Bāsu Dei) is the powered-up form of Kamen Rider Birth when all six Birth CLAWs units are summoned and attached to Kamen Rider Birth at once. Becoming Birth·Day requires six Cell Medals, it can be done all at once or by summoning one Birth CLAWs at a time. Birth·Day can also perform a powerful attack called the 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. Likely drawing residual energy from the other CLAWs units.[7]


When the six Birth CLAWs units combine, they create the CLAWs·Sasori (CLAWs・サソリ Kurōzu Sasori), an autonomous scorpion-like assault droid which has its master server and network connection installed in the Birth Helmood. Summoning it requires 1,000 Cell Medals - however, its power output is sufficient to even drive off Kazari, which Birth is normally unable to do. The CLAWs·Sasori can move freely across water and burrow underground, even with a passenger such as OOO. It can also split apart into its components and reform to create the illusion of being destroyed. Offensively, the CLAWs·Sasori is capable of extending both of its arms and its tail on tethers like the combined Crane and Drill Arms and can utilize a Cell Burst-like attack which fires an array of various colored lasers from the tip of its stinger.[8]