This is not the cute asian you are looking for. You can go about your business. Move along.
There was this whole squad of various Imperial forces soldiers. Couple of Storm Troopers. Tie Fighter pilot. A Snow Trooper. A Bike Trooper. And even one of those red Imperial Guards. Of course there was the big man himself along with them, Darth Vader. All these guys did all convention was walk from one end of the convention centre to the other and back again. And, of course, pose for pictures.
Personally I don't know how they can see a thing in those helmets.