Satan isn't nor never was an Angel, Lucifer is.
According to the bible God went out of his way to inflate his ego, he made him the most beuatiful, the head aof all other angels and was declared his favorite. You;d have to be blind not to see the bible says it was an intentional fall.
Satan is the ArchDemon of Anger It is also a word that once meant "against god", it was used to describe Athiests and others.
I am a satan, because I don't believe in Jehovah.