"From Kamen Rider Hibiki"

Nanashi ( ナナシ ):
http://i231.photobucket.com/albums/.....Makamou/19.jpg

A hybrid giant-type creature whose birth was setup by the Black Puppet, enlisting the aid of the Douji/Hime pairs to offer their children. Both Ubume & Yamarashi arrived on Asama mountain, briefly fought each other until Ubume drove itself into Yamaarashi's neck, causing it to collapse to the ground with neither showing sign of movement as the BlackPuppet forms a cocoon over the two Makamou, causing them to mix and blend together within the chrystalis, merging them into one powerful beast with its components' abilities. By the time Ibuki and Todoroki arrived, the newly-born Nanashi emerges and overpowers the two Oni, immune to their Onigeki attacks. Nanashi would had killed them if Hibiki hadn't arrived, cutting the monster's tail off. The Oni use an attack from all-sides move to use a Kaen Renda form/Shippuu Issen/Raiden Gekisen combination attack to destroy the beast.

©Toei