Scarlett Johansson appears in 'The Avengers' posters

Slideshow posted in Photos | Tuesday, March 13, 2012

3 of 6: Robert Downey Jr. appears as Tony Stark / Iron Man while Hulk, who will be played by Mark Ruffalo in the film, is seen in the background in a 2012 promotional poster for 'The Avengers.' The film hits theaters on May 4. ( Photo / Marvel Studios)