Seems there is a lot of confusion on who Black Widow will be in Iron Man 2. Some unfamiliar with the character think she might be a villain, a hero, or a love interest. Well it might be all of them.
Well according to the source material, Natasha Romanoff/Natalia Romanova was a KGB Agent who seduces Tony Stark while on a mission to kill the creator of the Crimson Dynamo armour (a former Soviet scientist who defected to the US and works for Stark). Later Widow would defect to the US herself and joins Shield before inevitably joining The Avengers.
So does the Black Widow become a goodguy? Well it appears that she is going to be a member of SHIELD if this screen capture tells the tale.
Taken from the most recent trailer, we get a medusa looking redheaded spy and a hint of a very familiar badge on the shoulder of her outfit that was missing from previous shots. I have lightened up the image that has been floating around the intarwebs to get a better look.
Now of course this doesnt mean that she is going to start out a member of Shield, but its very possible her story will paralell the comic storyline and she will originally be sent as a Russian Spy and eventually defect to help Tony Stark and Iron Man face off against Whiplash.
While some sites are claiming this is absolute proof (which it could be) it is still possible that she’s just wearing the symbol as part of her spy infiltration to Stark Enterprises and she might be a somewhat villain afterall. But I think they will stick closer to the Comics with her path, even if Crimson Dynamo is not involved.