Gods
A manifesting by mortals. Unlike Angels and Demons, Gods are not a part of the Old Gods original plan. But when mortals pray, their will and prayer gathers The Fundamental Essence to create a new god.
Gods stem from concepts. They are bound to their original concept. For example, a god of a land is bound to that land.
Concepts including: land, weather, seasons, emotions
Their power is reflected by the amount of worshippers. Not necessarily organized religion—for example, the god of the sea is powerful because everyone believes in the concept of the "sea."
For this reason, when Gods mate with mortals, their offspring are stable.
Gods are fickle. Neither good nor bad, they are what the believers make them to be. They have independent thought and feeling, but they are grounded in their believers. For example, the God of Harvest is as likely to bless a season as they are to make the seeds yield dust. Gods believed to be malevolent emerge malevolent.