focus films and question that I will be researching in this project

This will be short entry, not much text compared to the my last one - which I think borders on the too long but oh well, I'll just have to edit it later. This entry will deal with the question I want to research for this research project and i have to say - I am very much looking to it.


My question is as follows:
How and why has the representation of superheroes changed over time? 


Focus films:

I have chosen four films to use in for this project, they are as follows: