Well we also know the Absolute is a single person, female I believe. I am assuming some sort of Drow matriarch(tend to be powerful wiz/sor/clerics) although that is speculation. Perhaps a Drow matriarch got her hands on some forgotten netherese magic and is making a powerplay?
It's a BG game. She might as well be the last Bhaalspawn. It could be a way to tie it to the first two games.
All of the Bhaalspawn are dead. This was necessary for the rebirth of Bhaal, which happened in the table top adventure Murder in Baldur’s Gate.
