The Morrigan: Irish-Celtic Goddess of War
A popular dark goddess is the Irish Celtic Goddess of War and Shapeshifting—The Morrigan. She is often depicted as a goddess accompanied by crows, and she is very often depicted on a battlefield.
The Morrigan was a Goddess of War, Destruction, Death, and Transformation. She is called The Phantom Queen. She was known to have the ability to shift into the form of various animals at will—the crow, the bull, the eel, the wolf, and more. She uses her shifting powers and magic in order to win battles.
The Morrigan is thought to have been a Triple Goddess... or perhaps three goddesses in one, similar to the Trinity. Her three aspects are Macha, Badb, and Nemain. She is the daughter of one of the Tuatha de Dannan (the first divine gods of Ireland). She foresees warriors' death before they happen, and is also considered a goddess that protects the king. She is a goddess of sovereignty and many believe she is an ancient earth goddess because of her association with the cow, crow, and wolf. Her war aspect is somewhat dark, in that we can see The Morrigan as the crow that eats the remaining dead off of the battlefield. But out of destruction and chaos comes new life. And let us not forget her other associations with the earth and protection of her people!