Question: who is emhyr var emreis?
Answer: Emhyr var Emreis is the emperor of Nilfgaard, the most powerful nation in Witcher Saga. He's the overarching antagonist of The Witcher Saga, appearing as the overarching antagonist of the books and the games. He also serves as the overarching antagonist of the 2019 Netflix adaptation of The Witcher.