Everyone says DC's big three is easy to name, Batman, Superman and Wonder Woman.
What about Marvel? Well spiderman, obviously, but the other two is more difficult. I think its probably Iron Man and Hulk to make up the three, but with so many movie appearances and a decent following, is it perhaps Spiderman, Iron Man and Wolverine?
I am sure some Thor fans will disagree, but I think 3 of those 4 above named characters are currently in the big 3, I just can't decide which ones!