Ghost Imagin

The Ghost Imagin (ゴーストイマジン) is one of Shiro's Imagin followers and possesses Ryotaro, having him assume Kamen Rider Yuuki Skull Form. While possessing Ryotaro, Ryotaro is referred to as "A-Ryotaro" (A良太郎), with the A standing for "Another". He is later destroyed by Den-O Climax Form's Extreme Slash: Climax Version.

Portrayal
The Ghost Imagin is voiced by Hiroshi Kamiya (神谷 浩史) who later moves on to voice as in. As A-Ryotaro, while retaining his voice, he is portrayed by Takeru Satoh (佐藤 健). In both his Imagin form and as Kamen Rider Yuuki Skull Form, his suit actor is Kazutoshi Yokoyama (横山 一敏).