The Demon's Quest

You are the most powerful demon this earth has ever known. Sounds ike a good start. You have no name, no parents, no relatives, you were just created one day. Just sort of made out of evil and other particles of things. You remember being amongst clouds, but you are sure you are not from Heaven. You remember floating down and having a body of pure vapor, mist, and you could float as high as you wished but not move a cloud. A cloud is the only thing you can not move.