In a recent interview with Tim Roth, who played Emil Blonsky, the soldier who becomes Abomination in Marvel's The Incredible Hulk, he reveals that the villain could have appeared in an Avengers movie from Marvel.
Edward Norton's Hulk movie is considered a part of the Marvel Cinematic Universe, but a lot has changed since it was made. Apparently at one point they were looking to give it more of a connection than little mentions here and there by possibly including Abomination in The Avengers 2. This is what Roth had to say about it in a interview with Crave Online:
"They were going to do it. They did do that. They were thinking, in The Avengers 2 or something. There was a movie we could do that at one point, but way back when. It just kind of got swept under the carpet I guess. That would be hilarious."
I'm sure Marvel was coming up with all sorts of fun and strange ideas when they were trying to figure out what to do with their cinematic universe early on. I'm not sure how Abomination would fit in the current MCU, but I'm sure there were a few ways that they considered bringing him back to the big screen. They do reference Blonsky being locked up in Agents of S.H.I.E.L.D., which was something I completely forgot about until it was pointed out to me.
The Hulk film set up some big plans for some characters in the film such as Blonsky, and then there was Tim Blake Nelson’s Dr. Samuel Sterns, who was being set up as future villain. Whatever they were looking to do seems to no longer play a huge role in the current MCU that fans are enjoying. This is a fun bit of trivia, though, that I thought might interest some of you.