Unit Name: Bujakuou
Model Number: Unknown
Pilot: Otto, Jabez Grims
It's the combined form of two of the Shijin Choukijin, Buouki and Jakuouki, when Buouki combines over Jakuouki. They combined in order to fight against the 100 evils.
It was excavated by Jabez Grims, and was remodeled. In order for Jabez Grims and Otto to pilot them, he injected them with mass amounts of opium. Otto died during the battle with Ryukoou after his life force was drained by the machine.