thegladiators From any canon, including movie-verse:
Thor and
The Hulk. My Cap is post-Fear Itself, but if you're not familiar with the comics, that's totally fine, since it would all be news to your character anyway. In fact, I think it would be pretty interesting to play comic!Cap against any of movieverse!Avengers, because in his world, they've known each forever, but in their world, they've only just met. Some of them also have very different relationships/elaborate histories, which would create some conflict/confusion.
I'd also love to see:
Sharon Carter, Spider-Man (any canon), Falcon, Wasp, Ant-Man and Wolverine.