The subject of this article originates from non-canonical sources. To find out about what is considered "canon" see LOTR:Canon.
The Shadow Lord was once the king of a small and insignificant kingdom. When Sauron offered him one of the Nine Rings, the promise of its power proved irresistible. Now, his physical being all but gone, and his will enslaved to Sauron, the Shadow Lord wears his dark pride like a cloak, blotting the sun from the sky and dimming the sight of his foes.