IIRC the canon Gorion's Ward from WotC: you had a really stupid name and for some reason came back and wanted to rule Baldur's Gate of all places (WHY ? WHY ? WHY ???) and got killed by some other Bhaal kid that you helped out of Saradush but that for some reason wanted to murder you.

https://highfantasy.fandom.com/wiki/Abdel_Adrian

Also of course the bug that allowed to get two rings of gaxx was fixed, the cloak that reflected spells now deflects them, and I dont think the Bhaal form is supposed to be a demon.