Publication Information
- Device : Double Driver
- Japanese : ダブルドライバー
- Type : Buckle & Belt
- Usage : Transformation & Weaponary
- Users : Shotaro Hidari, Philip
- Rider Users : Kamen Rider W
- Season : Kamen Rider W
- First Appeareance : Kamen Rider Decade : All Riders vs. Dai-Shocker
- Main View : Full Episod
Double Driver
Double Driver is Kamen Rider Double's transformation belt, a second generation Memory Driver developed for the user to link with Philip to access his abilities, and the successor of the Lost Driver in terms of belt design. Unlike earlier models, the Double Driver uses two Gaia Memories at once for even more power for the user. There is only one physical Double Driver, but when Shotaro places it on him, another Double Driver manifests itself onto Philip.
Functionality
By inserting the Gaia Memories into the respective Memory Slots on their belt buckles, Shotaro and Philip can transform into Kamen Rider Double. The Left Slot holds Shotaro's Gaia Memories and the Right Slot holds Philip's. When Philip puts a Gaia Memory into the Right Slot, he undergoes Soul Forward, sending his soul to Shotaro to transform both of them into Kamen Rider Double. The process causes Philip's body to fall into a comatose state.
Another slot on the right side of the Double Driver is called the Maximum Slot. When a Memory is placed in the Maximum Slot, Kamen Rider Double can use a Maximum Drive finisher attack. This specific slot is used for the Joker Memory to execute one of three different Maximum Drive finishers depending on Double's current form.
- CycloneJoker : Joker Extreme
- HeatJoker : Joker Grenade
- LunaJoker : Joker Strange
As long as the Double Driver is worn by both Shotaro and Philip, they can telepathically communicate with each other provided that both of them are conscious outside the transformation to Kamen Rider Double. The transformation into Kamen Rider Double will be canceled if both Gaia Memories are removed and none are re-inserted for a certain amount of time.
Double Xtreme Memory
Transforming Gaia Bird Xtreme Memory

Transforming Gaia Bird Xtreme Memory is a special bird-like Gaia Memory that allows Kamen Rider Double to become CycloneJokerXtreme by changing from Live Mode to Memory Mode in order to slide onto the Double Driver. It first appears when Philip is in mortal danger from being attacked by the Weather Dopant, and it digitizes him where Shroud confronts him about his mission to save the Earth. The Xtreme Memory's powers come directly from the true Gaia Memory and are accessed through the Crystal Server on CycloneJokerXtreme.
It seems that the power source of the Xtreme Memory is wind power, as shown in the movie Kamen Rider Double Forever: A to Z/The Gaia Memories of Fate. To initiate its Maximum Drive, the Double Xtreme, the Xtreme Memory is closed and then re-opened. A variation of the Double Xtreme, the Double Prism Xtreme, is where Kamen Rider Double inserts the Prism Memory in the Maximum Slot of the Double Driver before closing and re-opening the Xtreme Memory. When Philip dissolves after his final battle as Kamen Rider Double, the Xtreme Memory which holds the data of his mind and body does as well. However, after Wakana sacrifices her life, she brings back the Xtreme Memory which holds Philip's body until his physical form is restored.
Gaia Memory

- Main Article : Gaia Memory
Metal Shaft

The Metal Shaft is an extendable quarter staff used by Kamen Rider Double when he assumes any form that uses the Metal Memory. It first appears in Kamen Rider Decade: All Riders vs. Dai-Shocker, and then made its TV debut in episode 2.
Finishing Attacks
When the Metal Memory is placed into the the Metal Shaft's Maximum Slot, Double can execute one of three different Rider Thrust Maximum Drive finishers depending on his current form.
- HeatMetal : Metal Branding
- CycloneMetal : Metal Twister
- LunaMetal : Metal Illusion
Memory Drivers

Memory Drivers are a series of transformation belts that filter the raw power of Gaia Memories. Those who transform without the use of a Memory Driver but through the use of Living Connector would eventually be driven insane. Those who use Memories with no Living Connector would be severely injured at the site of entry if there is no Living Connector present. There have been three Memory Drivers seen in the series, and four different designs were built.
First Generation Memory Drivers
Gaia Driver
Gaia Driver is the First Generation Memory Driver used widely by the members of the Sonozaki Family to avoid the corruptive nature of the Gaia Memories. It is considered a prototype Memory Driver belt for the later Generation of Memory Driver belts, as it was still intended to be used for Dopant transformation. Unlike the later Generation of Memory Driver belts, the Gaia Memories, when inserted into the Gaia Driver, are absorbed into the belt, behaving just like a Memory inserted into a Living Connector.
Users:
- Wakana Sonozaki : ClayDoll Dopant
- Ryubee Sonozaki : Terror Dopant
- Jun Kazu : Utopia Dopant
- Saeko Sonozaki : Taboo Dopant, R Nasca Dopant
- Kirihiko Sudo : Nasca Dopant
- Mick : Smilodon Dopant
Lost Driver

- Main Article : Lost Driver
Double Driver

- Main Article : Double Driver
Third Generation Memory Drivers
Accel Driver

- Main Article : Accel Driver
Related Post : Source : wikipedia / kamenrider.wikia