This list of mythical creatures that begin with this letter and I am constantly gathering information from each continent, and is continually being updated.
Draugr (Norse)
The draugr or draug (Old Norse: draugr, plural draugar; modern Icelandic: draugur, Faroese: dreygur and Danish, Swedish, and Norwegian: draug) is an undead creature from the Scandinavian saga literature and folktales. Draugar live in their graves or royal palaces, often guarding treasure buried with them in their burial mound. They are revenants, or animated corpses with a corporeal body, rather than ghosts which possess intangible spiritual bodies.
Draugar usually possessed superhuman strength, and were "generally hideous to look at", bearing a necrotic black or blue color, and were associated with a "reek of decay" or more precisely inhabited haunts that often issued foul stench. The draugar were said to be either "death-blue" or "corpse-pale". The close similarity of these descriptions have been noted. Laxdæla saga describes how bones were dug up belonging to a dead sorceress who had appeared in dreams, and they were "blue and evil looking".