I don't think Pouf cares honestly. I think the only reason he's in that room is to see if Gon or Pitou know where the King went. If they can tell him, he'd probably leave immediately.

Of course, neither of them knows where the King went. So will he attack Gon to try and vent his frustration? Probably. But we already know Killua was watching him so that's probably going to get him a big ol' lightning bolt up the ass.