
Singer and actor Koji Kikkawa (44) will be playing the role of a Kamen Rider in the franchise’s next movie, “Kamen Rider x Kamen Rider Double & Decade Movie Taisen 2010.” Kikkawa will appear in the film as Kamen Rider Skull, the first skull-themed Rider in the series’ history.
Kikkawa’s character is the famous detective Sokichi Narumi, a role model for the protagonist Shotaro (Ren Kiriyama), who is one half of the Kamen Rider Double team. Sokichi, who transforms into Kamen Rider Skull, holds the key to a mystery involving a resurrection, as well as the origin of Kamen Rider Double.
“Kamen Rider x Kamen Rider Double & Decade Movie Taisen 2010” opens in theaters on December 12.
Source: Tokyograph
As you can see, Kamen Rider Skull is wearing a Half-Double Driver, a right-sided one. According to some info I read, he will be using the Skull Gaia Memory so he can transform to Kamen Rider Skull.

And for your information, he is not the very FIRST skull-themed rider. Kazuya Taki aka Skull Rider is the very first one. He make an appearance a one of the protagonist in the Kamen Rider Spirits Manga and is a friend for both Takeshi Hongo/Kamen Rider Ichigo and Hayato Ichimonji/Kamen Rider Nigo. But he didn’t make any appearances on the live action series, though.
Source: JEFusion | Kamen Rider Skull on Double Movie

