Demon of the Xander Horde

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Upon the far East bordering the nations of Akellerat, Drohlok and Stranstiel sitting upon the mountain range named Xander ,formed by times of Apocalypse, lies these creatures. Reffered to as the Horde of Xander are these beasts whose intentions albeit unknown are condemned to be evil and result in constant violent and fearful episodes when there presence is discovered in surrounding countryside and sometimes deeper.

Research has been conducted by the temple of 'The Eternal Wheel' whose main presence is in Drohlok, often called 'the blood cult' however not damned or condemned. This research shows that they seem to exhibit 3 main personality types or intentions.
-first has been dubbed the Demon who spill blood and ingest internal organs of strong opponents and village elders in order and hope to one day gain the ability fly, only known by their short enraged words of "Must Fly". However they have wings they cannot or mostly cannot fly, either not possible and a futile effort or once they can their intentions are fulfilled they no longer take interest and remain in Xander. Demons of the Horde are typically solo rouges and however tougher than most don't last too long.
-Second is best known as the Ghoul, seemingly passive they act in small groups from 2-10  either in cemeteries or after battle scenes they are encountered removing corpses or slaying the mortally wounded, then taking organs and soaking scavenged fabrics in blood before hauling the load to the Xander Mountains. The purpose of this remains unknown however the best guess is for farming or decoration as bloodied fabrics are seen upon mountain peaks stapled down with bones, rusted weapons or simple masonry, the Organs are probably gathered for trade with Demon types.
-Third is the Dreaded horde either acting alone having infiltrated a village changing the local population to disturbed and feral people or as a member of the final act as a shock troop war party. This Dreaded Horde war party strikes quickly and deeply in great number requiring military action from their victims and often united action from hated yet fearful neighbors.
Anatomically the Dreaded beasts are far thinner than demons or ghouls and can glide with their wings, the Xander mountains being so high explains their easy initial invasive actions, they are the most feared and conduct this war like a ritual every 2-5 years.