Help with Names for some ocs in my lore

The white raven pack is lead by Rex, but Rex's life started elsewhere, originally from a place of divine which call themselves the Celestial Wings, they are guardians of all things pure and good. The Celestial Wings can take on the forms of other creatures. Meaning they could shapeshift into whatever they wanted, some were of birds like doves, which symbolizes purity. Something important to note around here is that the rules were very strict and disobedience was not allowed. However Rex was a new and curious spirit but curiosity was frowned upon. It made the higher principles scared of rebellion, if anyone were to find out how corrupted they really were. So to be sure that doesn't happen the higher principles had eyes everywhere. They wanted to keep order around here.

However no matter how hard the principles tried to hide their secret, Rex found out something that they shouldn't have but in order to still keep things quiet the higher principles banished them to the mortal realm, keeping them in the last form that they shifted into which was a wolf. Rexs pure white coat begun to turn black like soot to represent their sinful nature. They were alone, but soon their brother Solis had somehow managed to find them and kept them company and so Rex had found a sacred area of the mountains that the celestial wings could not see for reasons unknown.

This new and enchanting place would become their new home. This is where Rex began to form the white raven pack to find lost and misunderstood wolves who were unholy in their recent packs eyes. Setteling into their new home Rex has new goals and it's to reveal the corrupt ways of the celestial wings once and for all. No matter what they will put things right.