Dunstan still did not feel cold, but nor did he assert — to himself or anyone else — that part-vampires were impervious to cold. Simply that he personally did not mind the cold, and vaguely suspected that his ancestry might play a part.

Dunstan blinked at the girl — "don't let him get to you"? What did that even mean? Dun was not panicking, he just thought perhaps there was something they could do if they figured out what Peeves was playing at, and tried to stop him.

But their self-proclaimed leader was smoothly adamant that they should simply gather their things and go to the dormitories, so Dun was obedient, fastening his satchel and putting it over his shoulder, then continuing to help the nearby Third Year.