With Boo, I'm actually kind of concerned that Larian will deice to draw back the curtain on, and make a confirmation of, something that has throughout the history of D&D been a running mystery/uncertainty. As much as htey could play if for laughs, I wouldn't want that.
The conclusion of BG3 will show that Boo is actually the final Baalspawn - and he's been secretly preparing for his triumphant rise all these years.
