AceShowbiz - "Avengers: Age of Ultron" debuts a new explosive trailer ahead of May 1, 2015 release. Hulk (Mark Ruffalo), Iron Man (Robert Downey Jr.), Thor (Chris Hemsworth), Captain America (Chris Evans), Black Widow (Scarlett Johansson), and Hawkeye (Jeremy Renner) face off Ultron and his endless army.
Tony Stark's big bad brainchild (voiced by James Spader) explains his plans to decimate The Earth's Mightiest Heroes. "I was designed to save the world," he says in ominous voiceover. "People who have looked to the sky and see ... hope. I'll take that from them first. There is only one path to peace ... their extinction."
Samuel L. Jackson, Cobie Smulders, and Don Cheadle are among the returning cast. Elizabeth Olsen is cast as Scarlet Witch, Aaron Johnson as Quicksilver, Thomas Kretschmann as Baron Wolfgang, Paul Bettany portrays the Vision, and Josh Brolin voices the infamous Thanos.