Nephilim

Born with the blood of Celestials, prone to good and righteousness the Nephilim are widely regarded as typically heroic and wholeheartedly Accepted if not loved across the realm. They show hints of celestial qualities along with their sentient based heritage.
Living in the flying city of the holy Luxen the Nephilim were for the longest time apart from the rest of the world blissfully ignorant of the strife and turmoil of those below, whereas the world below knew of the Nephilim for all of their worst were banished to the world below since they could not fly back up to their homeland. When a criminal was banished they would be thrown from the flying island, some would use their limited capabilities of flight to attempt to return but they would quickly be fended off and thrown back off plummeting to their deaths, whereas some who would accept their banishment would use their flight to land safely down below and attempt to make a life for themselves below. Those who choose an exiled life would be known as the fallen and were widely ridiculed whenever they spoke of a floating city in the sky to any they met and branded as strange folk with weird magical capabilities.
Back on the flying city of the holy Luxen the people are prosperous this safety has led to most of the inhabitants to be sheltered and naive. Most of the general populace are religious and devoted to their respective god figures one of which is said to be the source of the prosperity and safety of the holy luxen. Before the draconian wars the people above could only debate and hypothesise about what lay below their city in the clouds as they could only see the ground below from much too far away and nobody who had left the city either by banishment or free will had ever returned. The Nephilim have for many generations past had a royal family of rulers who led their peoples faithfully; the Phenix line, a family rumored to have within them the purest blood of angels within their veins and could communicate directly with the lady of light their goddess who craddles their city in the skies above protecting them from the harsh life below.
Eventually one of the Banished who held a great grudge to their own people decided to tell the Fearsome Dragons of the island above the clouds, giving the dragons a new target and the Nephilim their first predator and enemy, eventually the Nephilim though powerful needed the aid of others and sent envoys down to speak to the other races to work together and vanquish the Draconian threat once and for all and reuniting with descendants of those banished in the past.

Legends tell that one of the banished actually was part of the original band of heroes, though not much is none of this figure as they wore a heavy coat of all black material and carried many items of strange designs who kept to themselves rumors would say they could often be seen trailing behind the rest of the Heroes. The only reason that people believed they were a banished member of the Nephilim was because of the █████████ █████ they could ████████ in battle, even the rest of the party of heroes would shy away from answering any questions about ████ citing that they didn't feel comfortable talking about them without their consent and would only refer to them as "████".

Races in 5e: Aasimar