The Fomorians were a supernatural race in Irish mythology. They are often portrayed as hostile and monstrous beings who come from the sea or underground. Later, they were portrayed as giants and sea raiders. They are enemies of Ireland's first settlers and opponents of the Tuatha Dé Danann, the other supernatural race in Irish mythology.
The Fomorians seem to have been gods who represented the harmful or destructive powers of nature; personifications of chaos, darkness, death, blight, and drought. The Tuatha Dé, in contrast, seem to represent the gods of growth and civilization.
Balor was king of the Fomorians and raised an army, with which he fought against his own grandson, Lug, who leaded the Tuatha Dé in the second battle of Mag Tuired.
The Black Fomor is a monster introduced in Castlevania: Order of Ecclesia. It resembles a large, muscular humanoid goat. Its body is gray and his horns and hooves are yellow. This monster simply floats around the level and uses glyphs to attack. If attacked, he can teleport behind Shanoa. Only one Black Fomor can be found in the entire game, in a room of the Misty Forest Road. Its glyph, Umbra, can only be absorbed during its attempt to use it.
It has a more powerful counterpart, the White Fomor.