Maybe we could play the child/grandchild of the paladin from "Beyond Divinity"?
Think about it, your ancestor was (unwillimgly) reponsible for bringing the Avatar of Evil back into the world and brought shame over you and your family. But now the time to clean your name has come and you will play your role to destroy Damian himself, by voluntering for a dangerous mission to get to Damian, who is now transforming in the Lord of Chaos himself (Ygerna was hinting something like this in Flames of Vengeance). You will wander in the lands of chaos to weaken the defenses of the hordes of chaos, so the Divine One and Zandalor can finally attack him with all their power. Maybe you can start a revolution,to free enslaved mineworkers and to destabilise the realm of Evil ( I forgot the name. It was the land of the orcs in Divinity 1).
Or you are looking for the sorcerer Maxos from Divinity 2, who has now found ultimative knowledge and is the one, who knows how to stop Damian/the Lord of Chaos once and for all.
Personally, I would prefer my first version^^.
