Today is the last day of the Con! And even though Marvel owned the later half of yesterday with their big Saturday evening panel in Hall H, they aren't quite through giving fans a proper tease of Avengers: Age of Ultron. They have debuted two more props on the convention center showroom floor, offering a peek at Captain America's cracked shield, and what appears to be Ultron Mark 1. Both of these were spotted in the footage that wowed audiences yesterday. Check it out, and then read on for more information about how Cap's shield gets destroyed, and why Ultron's first body looks like it was pulled from Tony Stark's dumpster.

The Avengers: Age of Ultron scenes shown take place at a party, with all of the Avengers in their civilian clothes, as each of them take turns trying to lift Thor's (Chris Hemsworth) enchanted hammer, Mjolnir. Tony (Robert Downey Jr.) tries and fails, and he even can't make the hammer budge with his Iron Man hand and War Machine. Bruce Banner (Mark Ruffalo) fails to move the hammer, although Captain America (Chris Evans) does get it to budge ever so slightly. Just then, a loud noise distracts them as Ultron crashes the party, offering the following ultimatum.

"There's only one path to peace. Your extinction!"

From there, the footage moves into a montage of shots including Black Widow (Scarlett Johansson) in her new suit, what appears to be Bruce in a straightjacket, and tanks fighting in the snow. Tony Stark says, "It's the end. The end of the path I've started us on," when Black Widow replies, "Nothing lasts forever." Fans also got to see the Hulkbuster armor in action, squaring off against Banner in full Hulk mode, while Ultron appears again, seemingly in his ultimate form, saying, "Look, no string on me." The montage ends with a shot of Tony in a desolate wasteland, standing over all of the other Avengers who lay battered and bloodied around him.