Inspiration; Comic Book Heroes

The archetypall comic book hero, Superman, assumes the identity of the "mild-mannered" newspaper reporter Clark Kent in order to live among the citizens of Metropolis without arousing suspicion. Whereas Clark Kent's true self is Superman (or rather the Kryptonian Kal-El), Batman is a character created by Bruce Wayne in order to disguise himself for the purposes of fighting crime. The Batman comics and movies such as Batman Begins have also explored the theme of the true self (Wayne) becoming lost in or giving himself over to the alter ego, much like the plot of Dr Jekyll and Mr Hyde. Post-Crisis comics flip this idea around for both superheroes. Superman becomes the persona that Clark Kent adopts in order to freely use his gifts to help the world without jeopardizing his friends, family and personal life. Conversely, carefree playboy billionaire Bruce Wayne becomes the alter ego necessary to hide the true persona of the crime-fighting Batman. The Incredible Hulk comic book series further complicates this theme, as Bruce Banner loses control to the Hyde-like Hulk whenever he becomes angry, yet also depends upon the Hulk's super powers in order to combat villains. Also the Batman villain Two-Face seems to split his alter-ego from Harvey Dent, whose personality changes from being judge-like to changing back to his Two-Face persona and being ruthless using his two-faced coin to determine life and death.
Source from: http://en.wikipedia.org/wiki/Alter_ego

I think the idea of an alter ego hiding a persons true identity is very interessting and it will drag the audience in, this is why Superheroes have inspired me in the making of my thriller.