Who are those mystical creatures who dwell behind the Doors of MainStrasse Village

Tucked away in quiet little gardens, or on 100 year old homes or in thriving businesses in our Village are little doors that are said to be the entryway for mystical creatures who come and go to and fro in our Village. Who are these mysical creatures. Are they the gremlins of bygone days, or the pixies that dance in the nearby fields and woods, Maybe they are munchkins from munchkin land, or gnomes or fairies? Where did they come from and why did they choose our Village? How many of them are there? How can one see them? Where do they go when they leave their dwellings? Do they have names? How old are they? Can I read about them in the history books? Are they spirits of the departed? Someone said they gather at nite and dance thru the streets and alleyways of our village.