2. Could that happen?

Well, Frank Grillo's Brock Rumlo survived (barely) in the end of Captain America: The Winter Soldier. Furthermore, the actor revealed that he is preparing for a comeback in Captain America: Civil War, so he might get the chance of squaring off against the Hulk (however, for the moment, it isn't known whether the green goliath will be seen in the Winter Soldier sequel).

But, no matter what Frank Grillo might say, Crossbones is still just a human. And, if we recall The Avengers, Hulk shrugged off all the bullets that were shot at him (even more, Bruce Banner couldn't harm himself because of the other).

3. So where does that leave us?

We know for certain that Crossbones will be back. And while we know nothing about the Hulk, we can bet that the S.H.I.E.L.D. agent will have a word to say in the Civil War.

But could Frank Grillo actually tease us and reveal the Hulk for Civil War without us even suspecting? Food for thought!