Lilith

Lilith is known as the female version of satan to the Fae, not just a normal powerful female demon. She is considered to be the wife of the Devil, though many believe this to be false. She was brought out of Nether and into the real world for the first time by Morgana Fae.

Morgana Fae
In the days of beginnings, the demi-demon Morgana summoned Lilith out of the Nether to ask to bear children of her own. Lilith offered her blood to Morgana which allowed her to bear two children. Furthermore not only did the blood from Lilith allow Morgana to have power over the Earth, she was given the country Castellar, a place for her children to live safe amongst the human realm as half-human and half-demon hybrids. Before Lilith was summoned away, as atonement she took the human brothers and sisters of Morgana and made them into the seven sins Envy, Gluttony, Greed, Lust, Pride, Sloth and Wrath. Morgana Fae died shortly after conceiving two children granted by Lilith, who later become the queens of the Seelie and Unseelie court for eternity.

The Cardinals
Before being dragged back into the Nether after her summoning with Morgana, Lilith took Morgana Fae's older human brothers and sisters and fed them her blood out of sheer pleasure, twisting their mortal minds, souls and hearts. They were not given the power of the Earth but were given immortality despite previously being humans, and left with no memory of their former lives as mortals. The brothers and sisters of Morgana Fae became the seven sins Envy, Gluttony, Greed, Lust, Pride, Sloth and Wrath.