Remember this epic shot from the first "Infinity War" trailer? It's not in the movie! In fact, the Hulk, featured prominently running with the other Avengers in the scene, only appears at the beginning of the film. At some point, directors Joe and Anthony Russo decided that they didn't want Bruce Banner to Hulk-out during the battle in Wakanda. Throughout the movie, Banner has trouble unleashing the beast, and the Hulk repeatedly shouts "No!" in his head mid-transformation. There's something going on with Banner/the Hulk and it's something we hope is explored in "Avengers 4."