This list of mythical creatures that begin with this letter and I am constantly gathering information from each continent, and is continually being updated.
Nuli (Medieval Bestiary)
The Nuli, were a legendary race of people with backward-facing, eight-toed feet, living on Mount Nulus in India. The original Greek spelling of their name: Pliny was quoting the Greek writer Megasthenes--would have been Nuloi or Nouloi.