Though it is rare for angels to be expelled from Heaven, when they do they are more often than not found in the employ of ambitious Kings and Overlords.
Extremely wise and powerful these fallen angels are also unpredictable.
Ignorant royalty often think that they will do their bidding no matter how evil the deed, but an Angel is the model of God’s will and even though they have been expelled from heaven doesn’t mean it was evil traits that led to that expulsion.
An Angel will never reveal its reason for expulsion and will often cling to a firm belief they will be forgiven and return some day to Heaven.
This often means they take on higher stations of the church as a secondary role to their employment.
Angels may have power, speed and knowledge but they are also mortal to a degree and carry great guilt.
They will not pass over bodies in their path but are great commanders in battle.
Angels will sacrifice themselves when needed and considering it to be for the greater good and ironically a way to return to heaven.
The King who was a higher order of Angel than the Bishop seized on the opportunity that expulsion presented and tricked the Angel into his service, knowing how to manipulate the powerful figure but never revealing his own true origins to it.