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Black Widow, 'The Avengers'
The only female member of the Avengers team in the recent Joss Whedon film, Black Widow or Natasha Romanoff (Scarlett Johansson)is a vital member of the S.H.I.E.L.D. team. A deadly assassin who has martial arts, gymnastics, and acrobatics under her belt, the Black Widow helps to fight against Chitauri and knock some sense into Hawkeye (Jeremy Renner).