The Holy Crusader

The Holy Crusader, sometimes known in scripture as "The Dawnbinger", is a twelve winged perfect being that was created during the first apocalyptic war (note: first apocalyptic war ends humans and gives way to celestials to walk the earth) to halt the war. During the Celestial Apocalyptic War, The Holy Crusader was heralded, resulting in a near destruction of the planet. God and Satan managed to stop the end of the world by splitting The Holy Crusader into two imperfect beings, The Seraphim.

First Apocalyptic War
The Holy Crusader was created, not born, from a perfect soul harvested by Satan and God to stop the war between humans and daemons by eliminating the ones causing the problems. After the job was done, The Holy Crusader was sent to The Garden of Eden, where it was forced to sleep.

Celestial Apocalypse
During the Nephilim war, The Holy Crusader was called once again by Cain and The Other Guy, reasoning that because they were gods, The Holy Crusader would wipe out the opposition. How they managed this is uknown, though it is speculated that any celestial can contact The Holy Crusader when it is in Eden. Because The Holy Crusader was created to eliminate trouble makers under the control of Satan and God, and because Cain and The Other Guy did not have the power to properly control The Holy Crusader, it developed something of a free will and began destroying everything it deemed a sinner. This, of course, was most everyone. By the time Satan and God had realized exactly what had happened, most of Nephilims were destroyed.

Splitting
Because The Holy Crusader was a perfect being and cannot be destroyed, the only way to solve the problem was to split The Holy Crusader into two six winged impefect beings. It was separated into The Seraphim and they were sent to live in two opposite lands to avoid them ever coming together and finishing their destruction of the world. Most believe The Seraphim to be a metaphor or that they flat out do not exist, as little to no survivors of the attack were concious during the actual splitting.