No Gods, No Masters

The Fallout's only Angel who surrendered himself to the father, and as punishment he was sent into a another world far worse than the one he was used too...

He prayed for forgiveness to the father, and while he prayed, he became the Wasteland's Angel of Vengeance. The Followers of the Apocalypse saw him as their Savior. Joshua Graham saw him and let go of his hate in Zion as The Angel convinced him that the lord would smite him in the end.

Caesar and his Legion saw him as an enemy against his belief and in the end was killed by the Angel of Vengeance, and so was his legion. The NCR was pushed out of Mojave desert and made New Vegas independent.

What no one knew was the Angel was coming back with a plan and plenty of Vengeance.

After all, War Never Changes