This list of mythical creatures that begin with this letter and I am constantly gathering information from each continent, and is continually being updated.
Nargun (Gunai)
A Nargun, according to Gunai/Kurnai tribal legends, a fierce half-human half-stone creature that lived in the Den of Nargun, a cave under a rock overhang behind a small waterfall located in the Mitchell River National Park, Victoria, Australia.
Aboriginal legend describes the Nargun as a beast entirely made of stone except for its hands, arms and breast. The fierce creature would drag unwary travellers into its den. Any weapon directed against it would be turned back on its owner.