A'ight, I've got a question, and it might be kind of a spoiler but I haven't actually read ahead or anything. This is just an insight. I actually think this is pretty interesting, so it would be cool if you read mah excessively long comment.
So, in the bible, Adam and Eve (the first humans), have 2 children, Cain and Abel (in case you haven't noticed, these are the two names of only male leads so far). The story of those two is: Abel is the goody-goody and Cain is like the bad seed. Cain get's jealous/hateful and kills him. Thus, he becomes the first murderer. I feel that this can't be a coincidence but the story's aren't matching up at all. In this one, the devilish being is actually Abel instead of Cain, while Cain is all celestial and angel-like. I just thought I'd share my knowledge with y'all. (and btdub, I ain't christian I just learned about this stuff from history books)