Here's another far out possibility @Priest. Far out there, not very likely but I'm just spitballing.
Perhaps the absolute, like all mind flayers doesn't have a gender. Instead the absolute is a god like Angharradh that is made up parts of other gods? The dead three, Ilsensine and Shar?
I don't think that the Absolute is a combination of the Dead Three, Ilsensine, and Shar. I can't see what Ilsensine and Shar would have to gain from working with three now-lowly deities.
