"That's me," the Doctor said with a wide grin, not put off by the emotionless response. His reaction to Heather's arrival was far more cheerful than the young man's.
"Hello. I don't think we've met yet. I'm the Doctor," he said, still smiling widely. It was nice to put faces to the new arrivals instead of just the odd 'vibe' he got when someone new popped up within the paradox. Especially when they were the less grumpy arrivals.