In the rush to cram as many characters into these Marvel movies as possible, it seems like most filmmakers won't turn down the opportunity to shoehorn someone else into their films. Surprisingly though, the Russo Brothers actually considered two potential characters to put into Captain America: Civil War before ultimately deciding that the film was better off without them.
While speaking with ComicBook.com, the brothers reveal that there were once plans to capitalize on the return of William Hurt's Thunderbolt Ross by potentially having him turn into his comic book alter-ego Red Hulk, but they were dashed once they began taking stock of how crowded the film was becoming. "We had so many characters in that movie as it was," Joe Russo tells ComicBook.com. "We consider everything, obviously, but with so many characters in that movie as it was to try and entertain adding another character and to get to the Red Hulk, you have to add a back story. You have to substantiate the narrative to get to that. [Thaddeus Ross], on our list of priorities, he was there sort of as the government's agenda and not to add another complicated super powered character to the mix."
Joe went on to add that, "We had a board when we started this process of the movies with these Avengers characters that have ever graced the screen in a Marvel film and a list of characters that we have at our disposal that haven't graced the screen. We spent the last six to eight months crafting stories around the cornucopia of characters at our disposal so anything is possible."
When asked if that included seeing Spider-Man in his Iron Spider costume from the Civil War comic, he added, "Again, that falls in that category of anything's possible. We consider everything."