Demon

(Not to be confused with Youkai's or Phantoms)

Demons were once Phantoms before being corrupted to serve a Daera in the Underworld. A majority of their minds are too simple to think without a Daera to control them. However, the oldest Demons grow minds and desires of their own. When given a body, Demons tend to hold power reminiscent of what they had in their previous life. They are tools used by selfish Daera whether it's to free themselves from prison, to show superiority, or to merely survive.

Demon Lord
Demon Lord is a name for the Daera. These Demon Lords created Demons. Two examples Demon Lords, or Daera, are Zagreus and Williams Father.