In the beginning God Created the heavens and the earth, but as Satan rose to power God's attention had to be moved from the earth and the people who live there in to the growing threat
God descided to create the three forces of creation: Gai, Ashrom, Chronos.
Gai commanded over the earth, Ashrom the beasts of the land, sea, and air, and Chronos over time itself
But even these three great beings could not do their jobs and watch over mankind. The angels in heaven were to busy fighting the war to watch over man so the beings created their own angels.
The Terran Angels...
Classes of Terran Angels