User blog comment:KillRoy231/Any chance of Lilith's return?/@comment-89.166.230.35-20191211160550/@comment-89.166.158.82-20191212203735

Because of her, she can die, but not without us getting a proper introduction of white-eyed daemons, just as we have gotten an enactment of yellow-eyed demons as Princes of Hell, Oldest of the Old Demons and First Generation

After all, Lilith was the absolute first demon and was transformed by Lucifer himself. It can be assumed that Alastair was also transformed by Lucifer himself in order to be the second demon overall of creation.