The Dark Knight:

Nananananana Batman! , I think that The Dark Knight was one of the best movies ever made, although Batman puts on his cape and changes his Identity I feel that, two faces (villain) personality is much more complex, having a perfectly normal face on one half and a extremely disfigured on the other could give people two opinions as to who he is and how he behaves. Having two faces could lead people to thinking you are two different people or have a split personality. In two faces case having two different faces made him turn from the most loving person to a hollow thoughtless being, bent on revenge.