"Bells?" He doesn't have a clue what that means, since he hasn't really faced much of the strangeness about this city yet, but it's the rest of what's said that gets the puzzled look in his eyes, squinting like he might be anticipating a better explanation.

The everything is what he doesn't like, not because it would mean knowing about him, but because it'd mean knowing all there is to know about Wanda.

"She does know and of course she is happy. I am her big brother, after all." Is the statement sizing up a little? Possibly. "And who are you supposed to be?"