What do you think a person, who spends most of his or her time at a place like the one in the picture, gets to see each day? Weird or normal things? What kind of man do you think he is? How would the voice of said man change the style of the story? Is he a bitter man, annoyed by the indifferent and sometimes hard faces that go by him? Or is he a philosopher? Does he do what he does because he chose it or because he was forced? The way the character forms in my mind (and so far I only have the character in my head. A place like the subway – or any train platform or airport – will have more than just one story to tell), is that of an observer, one who tells stories, and accompanies them with his music, whenever he needs to emphasise something from the story.
What about you?