A function is served by every story even if it's simply to get your crowd to laugh. Let the characters show themselves as they talk and act, just as people show themselves in life, and only mention information on their physical look when death story it's relevant to the story that that specific characteristic is being noticed by the essential character at that particular time.
As a result of their one disobedient act, all of mankind had to be born into an imperfect fallen world subject to passing, corruption, demonic spirits and terrible and evil people unbelievable death story that have selected with their free wills to live this life on the dark side - therefore causing untold pain, death and misery to countless individuals throughout the ages.
In effect while writing the story in much the same we have to embrace the personality of the fundamental character, Manner an actor embraces the style of the character he's 10 unbelievable death story playing on stage. There is never any need to describe a character simply for the sake of it. Like everything else in the story characterisation is simply applicable insofar as it leads to the storyline, and should be done through activity.