Portuguese fanpage Tony Stark Sincero has been rolling out tons of new promotional artwork for "Avengers: Age of Ultron" over the last few days. Below, check out some individual images of Ultron, Vision, Captain America, and Black Widow, along with some epic team shots and a look at the highly anticipated Hulk vs. Hulkbuster battle in the upcoming Marvel Studios sequel.

Written and directed by Joss Whedon, "Avengers: Age of Ultron" is scheduled for release on May 1.