One of my favorite recurring themes in bg3 is that of the charming monster that wants to manipulate you, use you, and eat you
Astarion is a brilliant companion for reasons that basically everyone in this fandom knows, but I see very few people note that it’s extremely interesting that one of the major bosses/secondary storylines in this game centers around vampires, when you yourself are (potentially, anyway) playing as someone masking as a pure humanoid, with powers to influence, control, and kill people. Mind flayers and vampires have a lot of fascinating overlap and similarities, and I don’t think it’s a coincidence that they’ve framed much of the story around two entities (the nether brain and Cazador/his spawns) that take pleasure in mind controlling people and thirsting for power at any cost
There’s a third monster that’s recurrent as well though: hags, primarily Ethel. Another monster that sells charming words and promises to people, and you can see firsthand the twisted ways that those promises are fulfilled. What a beautiful and horrible parallel to sacrificing your humanity in exchange for illithid powers and abilities. Where is the line at what you gain vs what you lose?
Vampires, mind flayers, and hags are all tremendously powerful creatures, and all three procreate via consuming other people and converting them into monsters like themselves. That price might very well be worth it to some, and I love that the game endlessly asks you where your own line in the sand is, and what you're personally willing to give up in exchange for life, power, freedom
But are you clever enough to outsmart the being offering you such power? Can you really find a way to come out on top?
"And so I rescind my previous guides to dealing with a hag, my suggestions for clever language and deceit. Instead, I offer these words should you ever encounter a hag: run. And pray she does not follow."