Well, a good way would be to implement an encounter in the forgotten forest where he shows up, realizes he's dead then has to fight to survive only to fall at the hands of those he saved the lives of in the first place. It'd be like a double hell...
Not sure if this has been previously brought up, but any chance to add a playable or obtainable version of General Leo from the forgotten forest or whatever? Finally put that into the game like it should have been in the first place.