With SO many characters on Marvel and DC, HOW would you describe a character in 2 or a few words??

What makes "this" character Unique and impossible to replace??

What is that MAIN thing about every character that if is change go against everything of what that character stand for???

Everybody know who is Batman, Superman, or Captain America but how would you describe them in a few words??

Let's begin with Superman.

What Superman have different than ANYBODY else? for me not his powers, more than that, and like is describe in Kingdom Come: He ALWAYS knows the different between wrong and right.

Batman: Obsession. I can't imagine a better way to describe it.

Booster Gold: the search to find his REAL right place in time or space. And the fact that he is always trying to prove to himself that he could be better than his past actions.