Ruffalo does a great job as both the long-suffering Banner and his mayhem-happy alter-ego, so it should come as no surprise to learn that Marvel has tied him down to appear in a few more of their movies. Six to be precise!
We’re presuming that The Avengers was the first of those six, which would suggest that Ruffalo will be appearing in five more of the studio’s forthcoming outings. We’d guess that at least two of those movies are potential Avengers sequels, perhaps with a couple of cameos in one or more of Thor 2, Iron Man 3 and Captain America 2. Plus, also, a solo The Hulk movie, maybe?
Source: Total Film