From the comic book pages of The Sisters of Darkness / Sinthia, published by Lightning Comics.

Summoned into existence 66,600 Earth years ago, Letha rose through the ranks of Lucifer's minions, asserting herself as one of his premier soldiers of darkness. In time, Letha was allowed to identify and train two disciples, the beautiful blonde, Necrosa and the fiery redhead, Wretchin. Letha and her apostles enforce Lucifer's rule, slaying any who dare challenge his throne. The three assassins are collectively known as the Sisters of Darkness!