No question. I'm turning Sebastian here into an Incubator for lulz. That and he's going to love his new cat form.

As for Muraki, I'm tempted to have him go the way of Ao no Exorcist demon... if I can't think of anything else. (Satan possession with the blue fire and shit).

And then suddenly I wanted to make him a Cait Sith instead but... hnnng. Anyone have any ideas for the doctor?