In a story from The Hollywood Reporter, Kate Mara and Clark Gregg have come aboard Marvel's Iron Man 2.

The film is directed by Jon Favreau and is presently shooting in Manhattan Beach, California

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Mara's role is currently "being kept under wraps." Clark Gregg is coming back as Agent Phil Coulson of S.H.I.E.L.D.

Iron Man 2 is coming to theaters May 7, 2010 from Paramount Pictures and Marvel Studios.