In Hebrew mythology, she is a demon who molests men while they sleep. She is probably derived from the Sumerian monster/goddess Lilitu. In one Christian apocryphal text, she is Adam's original wife, who was created equally with him from the dust of the earth, who uses the true name of God and is transformed into a demon. Look her up anywhere, you'll find craploads of information and uses of the name.
Truly amazing design, very organic but very organized. My one comment would be that the red should have a lower saturation in the distance, and maybe the clouds could have more shape (though I love the misty/weird look). But awesome work!
Thanks for the kind words Von, Your right. I spent abit to much time on the character that ive left a few mistakes in the background, going to edit this painting today now that I have fresh eyes again, cheers!