re: The nature of the books. - As deamons go...
... I have to say that I don't agree with the description as offered in this case, or many others that I've seen. I think that the authors and film makers may have been searching for something and they opted for the daemon class, sort of speak and even for 'emphasis'. I don't think that it was well classified either.
Dear SDAI, there are some good stories I could tell also, but I won't, deamons excluded. :)
A peaceful holiday season to you, SDAI!