Mickey Rourke and Scarlett Johansson have signed on to star in "Iron Man 2
will play Whiplash
, the Russian villain, while Johansson
will play the Russian Black Widow
was approached for the role after Emily Blunt
stepped aside because of her obligations to "Gulliver's Travels
. The flick hits theaters May 2010.more photos of Scarjo's Monroe-Inspired Dolce And Gabbana ad after the jump...