Updated! Now with Black Widow, Captain America, The Vision & moreComic-Con kicked off last night with the usual Wednesday preview of the exhibition hall. Among the freebies made available to attendees were some nifty new concept art posters from Avengers: Age Of Ultron, featuring Scarlet Witch in action, Iron Man battling the titular menace and now Black Widow, Captain America, Quicksilver and even the Vision prodding robotic buttock.