Asmodeus (アスモデウス, Asumodeusu) is the 5th demon of the Reverse Kabbalah.
This demon was described by Baku when discussing the nature of the Reverse Kaballah with Shuri. It was described as a three-headed monster that could see the future and burn whatever it chose; it was also said that humans were nothing more than mere flies to it. Asmodeus actually resided in Sect Crescent (along with Belphegor) and holds the power of darkness. This makes Asmodeus very dangerous since the data of darkness has not spread over the world, and as such, no techniques to counter the darkness exist (save Satan's power.) However, it appears that Sect needs to use Belphegor's invention power in combination with Asmodeus to use the darkness as a weapon.