Ultron Threatens to 'Tear Apart' Avengers in New Action-Packed Trailer

— -- There's brand new footage from the upcoming "Avengers: Age of Ultron" and it's pretty intense.

It starts with Iron Man, played by Robert Downey Jr., saying "This vulnerable world needs something more powerful than any of us," possibly alluding to why he created Ultron, voiced by James Spader. Rumors have Iron Man creating the machine for good, but then things going horribly wrong.

Then you hear Spader say "Everyone creates the thing they dread." Uh oh.

In the latest trailer, Thor comes onto the screen and tells someone, presumably Iron Man that he's meddled with something he doesn't understand.

Next, we have action, mixed with a tender Hulk-Black Widow moment and Ultron's declaration, "I'm gonna tear you apart from the inside."

The clip ends with a 20-second battle between the Hulk and Iron Man's Hulk-busting armor.

Also around the 33-second mark, a mysterious person appears that looks like a woman, but it's hard to tell. The person is in a cave and could be another villain or something greater.

"Avengers: Age of Ultron" hits theaters on May 1.