Anonymous

The Anonymous is the result of a Childbirth Mother & a Mountain Storm being merged into one monster. The plot is overseen by a Black Puppet, enlisting the aid of the two Makamous' parents to bring the creatures to a mountain. From there, the two Makamou battled each other until the Childbirth Mother drove itself into the Mountain Storm's neck, causing it to collapse to the ground with neither showing sign of movement. From there, the Black Puppet forms a cocoon over the two Makamou that merges them into one with the chrystalis.

Emerging from the cocoon as Majestic Breath Demon & Roaring Demon arrived, the two Oni having being hunting it components, the newly-born Anonymous overpowers them while proving to be immune to their Sound Attacks. However, Echo Demon arrives to his comrades' aid, cutting the monster's tail off before the three Oni use their signature attacks from all sides to destroy the Makamou.