Oscar Wilde once said: "Man is least
himself when he talks in his own person. Give him a mask, and he will tell the
truth."
Masks are all common in superhero comics
and they represent a paradox by concealing an identity yet revealing another.
For example when Bruce Wayne puts on his
mask it both hide his identity and transforms him into the Batman, we can say
that masks have a certain power about them and no comics book represent it
better in my opinion than watchmen, with the use of the character Rorschach.