It sounds like Hulk will be in Captain America: Civil War after all as Mark Ruffalo has been spotted with cast members recently in Berlin.
There was also a rough picture going around with the cast members going out at night partying in Berlin too. If Hulk is in the movie, it will have a lot of characters.
It wasn’t too long ago that Mark Ruffalo himself shared a picture on social media of a chair with the Captain America: Civil War logo on it. It’s highly likely Hulk will be in the movie, or at least Bruce Banner.
Marvel has yet to confirm if Mark Ruffalo is actually cast in the movie. The only other major Avenger that hasn’t been announced as well is Chris Hemsworth (Thor). Although this make sense since the character is doing his own things during Phase 3.
Captain America: Civil War is a movie that will pack the most super heroes in a Marvel movie. Spider-Man has a cameo plus nearly everyone from Avengers: Age of Ultron will be in it too. Plus Ant-Man and other new cast members join on top of that.