In the explosive trailer of Marvel's 'Avengers: Age of Ultron,' the usual heroes are seen trying to fight a war against a destructive robot created by Tony Stark. Thor, Hulk, Iron Man, Hawkeye, Captain America, and Black Widow are seen trying to set something so they can continue fighting the robot-gone-berserk called Ultron.

"I'm gonna show you something beautiful. People screaming for mercy," says Ultron, with people running and screaming for their lives.

Scarlet Witch and Quicksilver also makes an appearance in the trailer, suggesting that there will be an array of new characters to be introduced in the sequel.

Few details have been released about the film, though the appearance of new characters suggests that the story could sprawl into many side stories.

Another new character seen in the trailer is Ulysses Klaw, which is the main nemesis of the character Black Panther. It might be a hint that Black Panther could make an appearance in Age of Ultron.

One more distinct quality of the trailer is how the superheroes have fight scenes in many regions of the world. There is one scene where Captain America is rushing on the streets of what looks like Seoul, while another crowd shot shows a person waving a French flag in the background.

Avengers: Age of Ultron, is expected to hit the big screen with a premiere on May 16, 2015.

Watch the new trailer below.