Yhwach is the central antagonist of Bleach: Thousand-Year Blood War and the emperor of the Quincy. He is the son of the Soul King and the founder of the Wandenreich, leading the Quincy in a war against the Soul Society. Calm, imposing, and overwhelmingly powerful, he seeks to reshape the world by destroying the existing balance between life, death, and souls. Yhwach serves as the main driving force behind the final conflict in the series.