Goddess of darkness (and sexiness).
http://www.b-boys.jp/series/digimon/reference/detail.php?dir=09-ra&name=lilithmon
Reference Book:
"It is a demon model Digimon with the appearance of a woman and is also one of the "Seven Major Demons" Digimon. Originally thought to be the same species as Ophanimon, it fell from heaven and eventually became known as "the goddess of darkness". It is said that death is surely given to those who mislead you with a mysteriously beautiful appearance, and you got on that invitation. It is suitable for the name of "the goddess of darkness", generous to evil but to do good for a good deed of ruthlessness.