The Adversary, also known as SATAN, is a figure in the Abrahamic religions who is seen as an enemy of God and humanity. He is often referred to as the Devil or Lucifer, and is believed to be the source of evil in the world. In Christianity, he is seen as the leader of fallen angels who rebelled against God and were cast out of Heaven. In Islam, he is known as Iblis, and is seen as a jinn who refused to bow down to Adam when God commanded him to do so.