Hawkeye is possibly the most underrated members of The Avengers, a fact not helped by his pointless cameo in Thor and a lack of any real sort of story arc in The Avengers. However, while he may have spent most of that movie as Loki's weapon, at least fans got to see just how tough he is and how deadly his archery skills can be when used for evil. Even when his mind was cleared up (thanks to a beating from Black Widow), Hawkeye's arrows played a key role in taking Loki down; the scene which saw the villain catch one only for it to blow up in is hand was perfect! With Clint Barton set to take on an even larger role in the sequel, he'll be even more of an asset with arrows upgraded by Iron Man.