Crom Cruach (The Secret of Kells)

Crom Cruach is an old Celtic god and a minor antagonist in The Secrets of Kells.

History
Crom Cruach is a Celtic pagan god in the form of a giant monstrous snake that resides in a dark cave within the forest outside of Kells, and most likely other, similar dwellings. He killed Aisling's mother and the rest of her people. Aidan's predecessor, Collum-Cille was once in posession of one of the God's eyes, The Eye of Collum-Cille, a special lense that works like a very good magnification glass and is required to finish the Book of Iona.