When something grabs his shoulder, his first reaction is to yelp and jump to the side. He almost activates his rocket shoes again; after all, the only things still out and about are gross cyborg monsters, and he's not about to let these put their creepy human hands on him.

Despite the mask, the relief is evident on his face when he realizes said human hand was, in fact, attached to the perfectly normal human body of what seems to be a perfectly normal human girl. It's immediately followed by a slightly peeved expression, as it kind of feels like it's the millionth time he's made a fool of himself in front of a lady since he set foot in America, and finally registering what the girl said doesn't exactly help unruffle his feathers.

"This is my hiding place!" he snaps back, annoyed both at the girl for having the gall of picking the exact same spot, and at himself for not noticing her sooner. His frown of discontentment quickly turns into a more interrogative one, however. "What are you doing here, anyway? I thought this place was off-limits!"

Well, most people would consider it off-limits, at least. It's not like they're forbidden from going outside, but civilians tend to avoid the whole "gross mutants" thing.