The Unseelie Court is the opposite of the Seelie Court's laughter and merriment and is ruled by the Queen of Air and Darkness. This dark goddess used to be the sister of Queen Titania before finding a mystical black diamond that has corrupted her with its power. The Queen of Air and Darkness no longer has a physical manifestation, but rather a cloud of darkness hovers around her throne, issuing orders for death, assassinations, and torture.
Unseelie Fey (MoP p. 38; HotF p. 12, 114, 123-4) – Evil fey; also fey tainted by the Shadowfell