|This article is about a/an transformation belt in Kamen Rider OOO.|
- "(Birth CLAWS name)!"
- ―Birth CLAWS equipping announcement[src]
- "Cell Burst!"
- ―Finisher announcement[src]
The Birth Driver (バースドライバー Bāsu Doraibā) is a belt that enables the transformation into Kamen Rider Birth, created by Doctor Maki as part of the Kougami Foundation's Medal System. After a single Cell Medal is inserted into the Birth Slot (バースロット Bāsu Surotto), and the Grap Accelerator (グラップアクセラレーター Gurappu Akuserarētā) knob is twisted, the belt's Receptacle Orb's Trancer Shield (トランサーシールド Toransā Shīrudo) is opened, encasing the user in the energy-based Cell Reactor (セルリアクター Seru Riakutā) as the Kamen Rider Birth armor forms around him. After inserting another Cell Medal and turning the Grap Accelerator again, Kamen Rider Birth can summon one of the Birth CLAWs units. By inserting two more Cell Medals into the belt, Kamen Rider Birth can initiate a Cell Burst (セルバースト Seru Bāsuto) attack.
Users (chronological order)
|User||Kamen Rider||Episode Obtained||Description|
|Nobunaga|| ||Nobunaga's Desire||Although technically non-canon, Nobunaga was the first person to become Kamen Rider Birth after Kougami gifted the Birth Driver to him after witnessing his desire.|
|Akira Date|| || An End, the Greeed, and a New Rider (1st)
The Eiji Greeed, the Double Births, and Ankh's Desire (2nd, prototype version)
| Akira used the Birth Driver, supplied by the Kougami Foundation, to become the first Kamen Rider Birth. After getting enough money pay for his surgery, Akira gives the Birth Driver to Shintaro Goto and entrusts him with becoming the second Kamen Rider Birth.
Akira later returns to Japan and takes the prototype Birth Driver to fight again as Birth Prototype.
|Shintaro Goto|| || Kamen Rider × Kamen Rider OOO & W Featuring Skull: Movie War Core (non-canon)
The Surprise Attack, the Proto Birth, and the Desire of Love (prototype version, briefly)
| When Akira Date left Japan for his surgery, he gave Goto his Birth Driver to fight in his place as the second Kamen Rider Birth.
When the Birth Driver was damaged, Goto briefly used the prototype version while it was being repaired.
|Eiji Hino|| ||Kamen Rider OOO Wonderful: The Shogun and the 21 Core Medals (briefly)||Eiji temporarily used the Birth Driver when he was unable to transform into Kamen Rider OOO after Gara had taken his Core Medals.|
Behind the scenes
- For unknown reasons, the finisher announcement was never used later on in the series.