What is there to know about a being that is never itself unless alone? What appears in a mirror when the light is out? Mirror is true to its nature, taking whatever form pleases it, and whatever persona suits the moment. Its gender varies, but it seems to spend the majority of its time in a female form. Its purpose is unknown, some believe its life is one of whimsy, others suppose it has some greater purpose to its being. Only time will tell which is correct.