?Marvel’s The Avengers?.. Thor (Chris Hemsworth) and Captain America (Chris Evans) join forces in ?Marvel?s The Avengers,? opening in theaters on May 4, 2012. The Joss Whedon?directed action-adventure is presented by Marvel Studios in association with Paramount Pictures and also stars Robert Downey Jr., Mark Ruffalo, Scarlett Johansson, Jeremy Renner and Samuel L. Jackson. ..Â© 2011 MVLFFLLC. TM & Â© 2011 Marvel. All Rights Reserved.