Per an article on Comicbookresources.com:
ith a whole team of Avengers as well as Iron Man and a few new superheroes, “Captain America: Civil War” could end up being the Marvel movie with the most heroes in it to date. There’s one character that fans have been expecting to see, ever since it was announced that William Hurt would reprise his role as General Thaddeus “Thunderbolt” Ross: the Red Hulk.
Hulk and Thor remain the only A-list Avengers not in the film, so some have speculated that “Civil War” would feel the presence of a Hulk by taking General Ross down a path similar to that of his comic book counterpart. During a lengthy interview from a recent international press tour, directors Joe and Anthony Russo discussed many aspects of “Civil War,” revealing more about Hurt’s antagonist.
Joe Russo weighed in on the rumors swirling around Ross’ possible transformation into the Red Hulk in the film, giving a definitive statement. “There’s always a chance at Marvel that you can see anything,” said Joe Russo with a smile. “But there, uh, let’s say — there is no Red Hulk in ‘Civil War.’”
The wording could leave a little wiggle room for surprise, as “no Red Hulk” does not preclude the arrival of any other color Hulk. But taking the quote at face value, there will be no Red Hulk in the film. But just because General Ross might not get any new superpowers, he’ll still be a threat.
“General Ross has a big presence in ‘Civil War,'” said Joe Russo. “He’s a character who was ham-fisted in his approach in ‘The Incredible Hulk’ — and that’s probably a polite way to put it. And I think he’s learned from his over-aggressiveness in that movie and he’s become more of a politician. He’s much savvier now, and he’s cornering the Avengers. Superheroes have always been anathema to him. He’s not a fan of them, and so now he’s come at them strategically by aligning the world against them and cornering them. So, he’s gotten much savvier and I think you’ll find that he’s grown as a character. He’s different than he was in ‘The Incredible Hulk’ and he’s a more formidable and political opponent to them.”
Well, I know that this Incredible Hulk fan was not wondering this at all. Actually I was hoping that I would never hear the words Red Hulk again. Please never use the Red Hulk in a movie. Never.