When Tony Stark tries to jumpstart a dormant peacekeeping program, things go awry and it is up to the Avengers to stop the villainous Ultron from enacting his terrible plans. <br /> <br /> Posted: January 12, 2015 <br /> Director: Joss Whedon <br /> Writer: Joss Whedon <br /> Studio: Marvel Studios <br /> Release: May 1, 2015 <br /> Cast: Chris Evans, Chris Hemsworth, Clark Gregg <br /> <br /> <br /> <br /> Marvel <br /> Action <br /> Adventure <br /> Comicbook <br /> Robert Downey Jr <br /> Chris Evans <br /> Chris Hemsworth <br /> Jeremy Renner <br /> Scarlett Johansson <br /> Mark Ruffalo <br /> Elizabeth Olsen <br /> Andy Serkis <br /> Aaron Taylor Johnson <br /> James Spader <br /> Cobie Smulders