How about some pre-production shots of Marvel characters?

Let's start with the tougher sell...

 Here's Paul Giamatti from Amazing Spider-Man 2. 

With some imagination, you might be able to make out who he's playing...

I will say, he's got the face down.

Now the easier sell...

There's still no verification on who Peter Dinklage is playing in X-Men: Days of Future Past,

but I think I have an idea...