Zerxus was, perhaps, both more distracted and less cautious than usual on his rounds.

His armour is soaked in blood, but he moves like this is a natural thing; if there's any stiffness to that, it's disguised by the bulk of steel.

Most people wouldn't assume from the start that their guest was newly awake, after they leapt up like that, but Zerxus gazes at him with a wistfully wry smirk and says, "You sleep like a hawk."

Oh, what? Did you give him an order?