A normal person would have run for it the moment those wings unfurled, would run twice as fast if they knew what damage could be done with those dark feathers. William wasn't running though, watching the wings with nothing more than bemusement. Even birds could posture like that.

It's only when Gabriel mentions his mirror that the alarm bells in William's head give a brief, single bleat of noise. Now this could be trouble indeed, the mirror stamping down on any kind of nerves. Nerves were a weakness, and when it came to angels like this, the worst thing anyone could do was show signs of being afraid. That and who was afraid? Certainly not William, not in his eyes at any rate. Shoulders are squared when the archangel stalks in, the human leaning back ever so slightly. So it was threats of violence now? Where the normal William was not someone who enjoyed violence, the same could not be said for his counterpart in the mirror world. Instead of backing off like any normal, sane being would, he merely gives another grin, eyebrows raising.

"I dare you."