7. Black Widow
Like Nick Fury, this former S.H.I.E.L.D. agent is very much just a human with no special abilities as such to speak of. However, Black Widow's training makes her extremely deadly, something which has been evident during her appearances in movies like Captain America: The Winter Soldier, Iron Man 2, and The Avengers (where she easily took down Hawkeye). However, despite how tough she might be physically, it appears as if Joss Whedon has used Iron Man to give Black Widow a serious upgrade in Avengers: Age Of Ultron. The character's suit has a passing resemble to the characters in TRON due to her stingers receiving a major upgrade. Widow can also be seen taming the Hulk in the trailer, and that takes guts!