Demons are beings spawned from Xin’s essence. There are numerous sub species that come in varying shapes and sizes. Most Demons are animalistic and hive minded. Demons that grow enough in power may develop individuality and greater self awareness.
Demons can sense one’s connection to Xin and will respect that devotion. Besides Xinites, to anything else Demons are generally violent and malevolent.
Through magic or devotion to the Dominus, Demons can be controlled and used as weapons. An entire branch of the empire’s military use demons and magic exclusively and are lead by powerful arch demons.