I've been reading the posts and can't remember everything I want to comment on now LOL
I believe that Lasher is a spirit who does the will of who he "belongs" to or is passed to. I think the person who summons Lasher can use him for evil or good. Deborahs mom used him for both good and a little evil.
Interesting to think about Michaels aborted baby being in the lab. Hmmm.... wonder what if anything will become of that?
I just reread your last post about the father's always dying. But the other fathers, at least to our knowledge, haven't had the powers that Michael does.