Yamaarashi

Yamaarashi appeared in 2005 TV series called Kamen Rider Hibiki. Yamaarashi is a giant-type Makamou that resembled a Minotaur with the back and quills of a porcupine. It could fire its quills at victims and use its tail to grab things or as a swatting weapon.

A Yamaarashi was sighted at Tsukama village at Ashio, over powering Sabaki until Zanki and Todoroki arrived. Todoroki chopped its tail off before it retreated to avoid the final blow. Yamaarashi went into hiding to regenerate before resuming its attack. The monster's kneecaps are slashed by Todoroki, collapsing to the ground to receive the deathblow of Todoroki's Raiden Gekishin.

Another was sighted at Karuizawa in episode 21, with Todoroki pursuing it to Asama Mountain where it fused with Ubume to form Nanashi in the following episode.

Douji and Hime of Yamaarshi: Recently created by the Black Puppet, the two were quickly charged with raising a Yamaarashi at Tsukama Village. They are able to shoots poison-needles from their mouths and have a quill-impression on their faces. The two overpowered Sabaki enough to have their child grab him. The Hime was obliterated by Zanki's Raigeki Fist while Douji escaped with his child, later killed Todoroki's guitar impaling him. A second set appear in episodes 21 & 22 under the Black Puppet, keeping Todoroki from interfering with their child meeting with Ubume. While their child undergoes the fusion process, the Douji & Hime attack Todoroki, bringing him to Ibuki so both pairs can kill them. In the end, both were destroyed by Todoroki's Retsurai, though they managed to take Akira out of the fight.