Ascend Astarion is Facinating. For 200 years no one looked at him a second time, no one looked behind the masquerade, no one looked into those empty eyes and the fake smile. Everyone believed his performance with always the same words. Only a possession of someone else. No God heard him, no death from starvation redeemed him.
And if no one comes and changes that then he becomes all of that.
A vampire lover with empty eyes and a fake smile. Free from hunger but hungry for power. Redeemed by the idea that something better could come. And so he makes everybody to become his own so everybody finally sees him.
Luckily there is another ending who someone is.
So that he no longer needs masquerades and performances.