WARNING POSSIBILITY OF POTENTIAL SPOILERS!
Alright since you are still reading on it looks like Hawkeye has the opportunity to become a huge hero in the Marvel Comic Universe. With rumors going around with many key Avengers getting killed off either in Avengers Age of Ultron or in Phase 3 giving side characters such as Hawkeye the opportunity to step up and play a huge role. Now here is the evidence that Hawkeye will play a huge character in the Avengers 2: Age of Ultron
Hawkeye Funko POP! Bobble Head
Alright now some of you may start wondering where I am going with this but currently Hawkeye is one of 6 characters from the Avengers 2 movie so far being released as POP! Funko Bobble heads along with Iron Man, Captain America, Thor, Hulk, Ultron, and the Vision.
Marvel has not yet announced a [Black Widow](movie:1070824), Quicksilver, or Scarlet Witch POP! Funko which could reveal that they are planning a much bigger role for Hawkeye! Through these POP! Funkos we can also expect a closeer look of what we can expect the Vision to look like and also maybe the small possibility of having a grey Hulk in the Avengers likely when he is controlled by Scarlet Witch as seen in the picture of his eyes.
Hawkeye Appears to Work Alongside with Scarlet Witch
Now this may be no huge deal but it appears that Hawkeye is working alongside with Scarlet Witch. And looks to be in the same area as you saw in the first trailer as she falls to the ground screaming.
Finally for the biggest idea of why Hawkeye could have a huge role in Age of Ultron!
HAWKEYE KILLS ULTRON!?
Now this is just speculation since Whedon has said he likes to strain away from the comics like he said in a previous statement:
“It’s not based on the series. Honestly, we went through a lot of titles – Underoos Of Ultron. None of them landed…Underoos would’ve been better because of the alliteration. But Age of Ultron really stuck. We were like, ‘It’s a book, but we’re still going to use it’.”
And we know that Ultron is likely not to kill Captain America or Iron Man in Age of Ultron since they will both be appearing in [Captain America: Civil War](movie:994409). If Whedon does take anything from the series there is a good chance that Hawkeye is the one who takes Ultron down! Making him become a huge character in Avengers 2: Age of Ultron!