This article is about a/an weapon in Kamen Rider OOO.


"Single Scanning Charge!"
―Finisher announcement via O Scanner when one Cell Medal is inserted[src]

"Double Scanning Charge!"
―Finisher announcement via O Scanner when two Cell Medals are inserted[src]

"Triple Scanning Charge!"
―Finisher announcement via O Scanner when three Cell Medals are inserted[src]

The Medajalibur (メダジャリバー Medajaribā) is a sword that serves as Kamen Rider OOO's personal weapon, which he can also use to fire waves of energy. It first appears in Kamen Rider W Forever: A to Z/The Gaia Memories of Fate, and then made its TV debut in episode 2.

Created by the Kougami Foundation as part of their Medal System, this weapon was given to Eiji by Shintaro Goto as a "birthday present" from the Foundation.

Finishing attack

By inserting three Cell Medals into the Medajalibur and scanning them with the O Scanner, it can be used to perform a Triple Scanning Charge (トリプルスキャニングチャージ Toripuru Sukyaningu Chāji) attack called OOO Bash (オーズバッシュ Ōzu Basshu).[1] The OOO Bash appears to slice through not only the Yummy, but the fabric of reality itself, though anything other than the Yummy is restored afterwards.

Successful OOO Bashes

Legend Rider Weapon

Arms Weapon

The Medajalibur is the Arms Weapon wielded by either an Armored Rider or a New Generation Rider when they transform into OOO Arms.


The Medajalibur is the Legend Rider Weapon granted upon assuming OOO Damashii, which is used by Kamen Rider Specter. Wizard Chapter Kamen Riders Ghost and Necrom can use it as well. Kamen Rider Battle: Ganbarizing


The Medajailbur is also among the various Rider Weapons used by Ganbarider in Kamen Rider Battle: Ganbarizing.

Behind the scenes


The name given for this item in Detail of Heroes is "Medajaribur" (with an "r"). However, the spelling of "Medajalibur" (with an "l") is more commonly used due to its connection with the word "Excalibur".


  • Medajalibur's name is a portmanteau of "medal" and Excalibur, the legendary sword from Arthurian myth.