In 2002, Mirror Shinji was Kamen Rider Ryuga (仮面ライダーリュウガ, Kamen Raidā Ryūga, Masked Rider Ryuga). Seventeen years later, he becomes Another Ryuga (アナザーリュウガ, Anaza Ryūga), created by Heure. In Rider Time: Kamen Rider Ryuki, he becomes Kamen Rider Ryuga again in order to participate in the new Rider War, serving as one of the primary antagonists.