13. Iron Man 2

While The Incredible Hulk has received worse reviews than Iron Man 2, I'm going to say that this is the worst of the lot "“ even if that is too harsh a word to describe it. Its biggest fault is that it exists as the third movie of the MCU, and takes on the responsibility of setting up future franchises. And since the Incredible Hulk felt (until recently) like he didn't belong in the MCU at all, it's a pretty big fall for the Robert Downey Jr. vehicle (the first movie was and is AWESOME).

And it can be said that Iron Man 2 started the trend of underdeveloped and lame villains. Having Whiplash (Mickey Rourke, at the height of his short-lived comeback) may have seemed like an excellent idea. However, the villain was just about the same as in the first movie.

Sam Rockwell would have rocked, but he got lost along the way. And that’s a shame, since I believe that he alone could have made Iron Man 2 a top MCU movie.

To be noted, Iron Man 2 did introduce Black Widow (who soon became a fan-favorite), as well as the new Rhodey (Don Cheadle), after Terrence Howard left due to monetary issues.