I know it's impossible
But this is a challenge!
There is an idea to use a spell on him, which is given by Dark Urge at the end of the story
Also, maybe push him off the cliff at the end of the main quest? Or any other ideas.
In any case, I want a way to have a situation in the game in which the player can see the real statistics of this character.
Super secret boss fight, the most difficult in the game, like Easter egg. Why not?