Hunger

The demon that granted the Devourer Lyras her power is known by the epithet "The Hunger" due to its perceived wish to consume all matter and energy on the Plane of Abiding and possibly the Spiritual Plane, from the very base to the most refined. Little is known about it beyond the fact that its appearance with Lyras is its third incarnation on this plane, and that its second before this was an entity named Entropy's Glory that plagued the Moon Mage Guild before it was exorcised. The Hunger supposedly has a true name that Edward the Exorcist discovered and threatened it with thereby forcing it to temporarily withdraw, implying that its name has some kind of power over it.