Natasha Romanov (Black Widow)
Fancast: Scarlet Johansson, now and forever.
The stage is already set for this one. Scarlet Johansson's portrayal of Black Widow has routinely been one of the best parts about the latest films in the Avengers universe. In addition to her A+ combination of brains, brawn, sass, and vulnerability, we've gotten loads of hints about her history that we would love to see pay off. We know she was a KGB operative, but (outside the comics) we get precious little else.
"I got red in my ledger," she tells Loki and Hawkeye. "I called in some favors in Kiev," she tells Cap, handing him the Winter Soldier's file. We're not sure how to make it clearer, Marvel: it is so time for a Black Widow film.
Sound off! What other lady superheroes need movies of their own, and who should play them?