Im quite sure, there is no such option ...
Since you cant kill them even yourself.
Like I said, never managed to play evil for any prolonged time and it is hard to rush through BG3 EA enough
But I still think it interesting. If we can act massively out of character when playing an origin character (never played them in DOS2), shouldn't it also be somehow possible to push them towards a path?
I mean, it is easier to understand a good person being tricked into performing a dark deed and then slowly eroding their morality through their guilt, then to have such a character spontaneously decide that it is puppy-kicking-time.
But maybe there is a way to convince him that the only way to save (himself from) Mizora is to don a dark cloak and then march with (goblin) troops into a grove full of younglings and slaughter them all. Especially since they belong to a group that just betrayed the ruler for life!
