That's a possibility. I think we might hold off on that, though. I'm going with the flow of my character. Right now, that flow is that he's upholding the same honor his masters had before him. He's a protector first, until he finds Black Star. However, he's still a mercenary. His protection only really comes to those he sees as younger, being kids in his eyes. So he would follow Sera until they find someone who can take care of her. Then he'd leave her to them and continue his search elsewhere.

As for the Madness beast, I think that might be a good idea. It provides a clash in our characters. Given their situation, he wants to run away, but the beasts are attacking the town. She might see him as cold-hearted for a while, but he'd go out of his way to save a group of children or people in need.