25 years ago, my sorry butt assaulted
Sarevok
in BG1. And lost, over and over again. The build I had gone with, a half-elven fighter/mage/thief, had very low health and was ill suited to taking on the big oaf. As a result, I never could get past the final boss fight in BG1. (From a canon perspective, perhaps another
Bhaalspawn
took him down in my timeline.) And the prospect of starting over with a better build was just too much of a time investment, so I had to let it go.

Imagine my delight upon encountering him in BG3, and having the pleasure of smiting his ass back to
Bhaal
. Yep, even got the killing blow. Finally got the last laugh on that turd.