Spirits of shadows
Spirits of shadows were servants of Morgoth, who he sent against Tilion and the vessel of the Moon. There was a strife in Ilmen, but Tilion was victorious against these evil spirits.
- ↑ J.R.R. Tolkien, Christopher Tolkien (ed.), The Silmarillion, "Quenta Silmarillion: Of the Sun and Moon and the Hiding of Valinor"