Angels

Life Span
An Angel's lifespan is indefinite. They are incapable of dying by natural causes. This does not prevent an Angel from dying, but it does give them magnificent regeneration.

History
Angels have had a very long history that spans centuries at least. The most notable event of recent times would be the severing of the relationship between the Angels and their God. The God did not seem to care for them much as it seemed as though he'd already abandoned them. The Angels would eventually come down to Earth to settle their own society with the leadership of an ArchAngel. While a majority of the Angels stayed, some would come to wander off. The afore-mentioned society would eventually be attacked by an unidentified race and a war would conflagrate. Both sides nearly drive each other to extinction. The pockets of Angels that had left the society in search of a new life had escaped this war.