"Iron Man 2" is set six months after the events of "Iron Man", with the secret ' S.H.I.E.L.D.' organization continuing to play a major role.
The film also explores Stark's alcoholism, his unwillingness to accept his advancing age, his glib approach to life while concealing the fact he is Iron Man and his jealously towards love interest 'Pepper' (Gwyneth Paltrow), finding another boyfriend.
Actor Robert Downey Jr. reprising his role as 'Tony Stark' aka 'Iron Man', said the film was not an adaptation of the "Demon in a Bottle" storyline from Marvel's "Iron Man" comic book series, but more about the 'interim space' between the origin and demon story arc.
"Iron Man 2" also stars actors Mickey Rourke as the villain 'Whiplash', Don Cheadle as 'Col. James "Rhodey" Rhodes, Gwyneth Paltrow as 'Pepper Potts', Sam Rockwell as 'Justin Hammer', Samuel L. Jackson as 'Nick Fury' and Scarlett Johansson as 'Natasha Romanoff' aka the 'Black Widow'.
'The Black Widow', created by writers Lee, Don Rico and illustrator Heck, debuted in Marvel Comics "Tales of Suspense" #52 (April 1964), introduced as a "gorgeous new menace" for 'Iron Man'.
Natasha appeared for the first time in a skintight black costume in "The Amazing Spider-Man" #86 (July 1970).
Born in Stalingrad, she trained as a spy/martial artist for the Soviet's 'Black Widow Ops' program, becoming 'bio-technically' enhanced.
Her gear is equipped with an arsenal of high-tech weaponry, including a pair of wrist-mounted energy weapons called the 'Widow's Bite'.
"Iron Man 2" will be released May 7, 2010.
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