@Sariel,
I think to understand the biblical concept of Satan think you have to get beyond the standard fire and brimstone concept of a keeper of hell.
I am happy to share what I understand from what I have studied and is exclusively a depiction of the biblical devil, some of it is speculative and based on my own development of information, I'd happily answer any specific questions if you wished to open a dialogue in PMs. If you want scriptural references for research, I am always happy to assist
Satan was created an angel that served in Heaven, although the term Satan meaning Adversary and Devil meaning Slanderer are merely titles, and not the name he was given, the original name of the devil is not made known.
He was clearly high up as he appeared to have a degree of a relationship with Jesus, He would have had to have been a charismatic leader, because he was able to convince 1/3 of the angels of heaven to join his crusade against Gods sovereign rulership. Stepping away from the traditional good versus evil view every man believes his crusade is a good one, and Satan as a supremely evil being is based on his opposition of God who people revere as the ultimate good, Put into context, The devil is an advocate for freedom to choose ones own path, It would seem to be that Satan is fighting for a democratic government while God is a king and sovereign who strongly advises his own direction.
Satan by his own motive likely thinks of his self as a political freedom fighter, although as with most political movements, power is a likely a key motivator.