Balor is a one eyed god of Death and king of a race of giants known as the Fomorians.
His father was Buarainech and wife Cethlenn. A prophecy told that Balor was to be killed by his grandson and so the god locked his daughter Ethlinn in a tower. However, one of the Tuatha De Danann, Cian, was able to enter the tower and got Ethlinn pregnant with triplets. When the triplets were born, Balor threw them into the ocean where one was lucky enough to survive. Lugh survived and later killed his grandfather.