Mister Z
Changes avatars like they were t-shirts
Maybe. I'm not sure, as I haven't read the novels. Something tells me it might've been explained, though, just like a lot of things were supposedly explained in the DMC4 novel, while the game left nearly all questions unanswered.
What do you think, Mister Z?
Sorry, never read the novels, and in all honesty I don't know if I'd ever really gain enough interest in checking them out.