(He does take a step back at that, but he doesn't seem offended by the girl's initial reaction. He figured there would be a few who would question his appearance as such. His only surprise is the time it took to find this kind of reaction.)

I apologize if I startled you. My appearance may seem daunting to those unfamiliar with monsters.

(The looming figure of a man drops down to a knee to help dissipate his intimidation and be that much closer to eye level with Madoka.)

Is this better?