Black Widow (Superhero)

AKA Nataska Romanoff, she's played by Scarlett Johannson in the second "Iron Man" film as well as the more recent film "The Avengers." The Black Widow is an awesome, kick-ass warrior-woman who never lets anything or anyone bring her down. It's sadly true that she's done a lot of bad things in her past. But now she wants to make up for all that, so she's also benevolent, as she's fighting the good fight in order to help others. She has no real superpowers, but her gifts include an enhanced immune system, peaked athleticism, and slowed aging, not to mention she just happens to be enormously stubborn and competent.