Blank Form

Blank Form (ブランク体) is the default form of the 13 Kamen Riders when they lack a Contract Monster. It is much weaker than their standard form, though it is enough to keep them from disintegrating in the Mirror World.

Only Ryuki and Ouja's Blank Forms have been seen. Ryuki began the series in Blank Form before he contracted Dragredder, and he also reverted back to this form when his Contract Card was stolen by Kamen Rider Gai. Ouja was reverted to Blank Form in Kamen Rider Ryuki: Episode Final after Genocider was destroyed by Kamen Rider Ryuga.