The Hulk was making his way down the strip from building to building trying to avoid the ground as much as he could. It was just easier to jump. He noticed Superman flying around and he wanted to swat him out of the air as was instinct for anything flying at or around him.
He noticed Captain America and recognized him and continued heading in that direction, that was where the . When he heard Tony's voice he turned his head in the direction of the flying robot Tony face thing. He stopped what he was doing and cocked his head to the side like a confused dog. He didn't know what to make of that. So he did what he did best and roared. And swatted at the...Tony. Bug. Robot. Thing. Just to check.