Opening in theaters and IMAX on May 7, the Jon Favreau-directed sequel stars Robert Downey Jr., Gwyneth Paltrow, Don Cheadle, Jon Favreau, Mickey Rourke, Sam Rockwell, Samuel L. Jackson, Scarlett Johansson, Garry Shandling, John Slattery, Kate Mara, Clark Gregg and Olivia Munn. Via: ComingSoon.net