The official first trailer for Marvel's Avengers: Age of Ultron leaked earlier today and fans are going ballistic. We first came to understand that the trailer was coming soon after the end of Marvel's Agents of SHIELD, but it appears as if someone was very impatient. Check it out:

After watching the trailer, we left with mouth on the floor and saliva leaking everywhere. From what we've seen, it appears Marvel is going for a darker tone with the Age of Ultron, though this could be just what the studio wants us to see.

The first Avengers film kicked off with a trailer that had no humor, yet the film turned out with more humor than expected, probably more than what we would have liked.

We expect that despite the seriousness in the trailer, Marvel fans should still hope to experience a huge bag of humor.

Best parts of the trailer?

We finally get the chance to see Ultron in action, and the machine looks awesome. It appears as if Tony Stark and the rest of the Avengers were shocked to see Ultron come to life. Furthermore, the machine itself does not like to be tied down, as it wants freedom, and probably wants to take over the world.

The trailer shows off both Quicksilver and Scarlet Witch as they show off their awesome powers. Captain America appears to have been defeated, as his shield is seen on the ground, broken in two. We see Thor dropping the hammer, but no idea why he did it.

What about the Hulk? Well, Bruce Banner comes off like a broken man who is seeking to start over. And then there is Iron Man in his famous HulkBuster armor.

Yes, ladies and gentlemen, Iron Man in the HulkBuster will go up against the Hulk, as the beast is loose in the middle of the city. We don't expect Tony Stark to win this battle, but he will no doubt put up an enormous fight to save the people, and himself.

No doubt Avengers: Age of Ultron is going to be one hell of a film, and could possibly make more money than the first movie.

Folks who are interested in watching Age of Ultron can do so on May 1, 2015.