Added by
Calvin on Feb. 6, 2009
Costumes are one important manifestation of their personality and usually it has features which serve a specific purpose.
For example Batman and Superman.
They are known for team-up; however you don't expect Superman to be flying around all dark, because it's just not his style. Batman on another hand needs a dark custume to hide himself in the shadows.
However it's normal that other organizations, like the Green Lantern Corps keep similar uniforms, as they are more, let's say, "official" organization.