Also I was curious as to what happens when a demon progresses enough down their continuum of power to achieve new rank as it were. A really strong 1st could maybe take on a weak to middling 2nd, but would lose to a strong 2nd. However demon ranks can be noted to some extent by their appearance, so they might on occasion rank up as some of the more powerful did in the past. If so do the demons then go through a metamorphosis into a new form with hints to their prior form, take on a new form, or remain bound to their original form?