The Latest Monster Hunter International book, Nemesis, reveals that one of the main characters, Franks (Frankenstein s monster) was a created being without a "Soul" and was inhabited by one of the "Fallen Angels", one that regrets rebelling against God. Well anyway, God uses him to combat the Forces of Evil (Demons and other Worldly and dimensional) beings. Actually it's an interesting concept, at least the part about a Demon inhabiting a Soul less body.