Christian Morgenstern (クリスチャン.モルゲンシュテルン Kurisuchan Morugenshuterun) is a member of Ketzer and a former Vandenreich agent. It is unknown what position he carried, and if he had a Schrift like the other members in the Ketzer, but he nonetheless is an inventive genius. He is regarded as a scientist of sorts in the Ketzer, having created reputable inventions to further allow the progression of the Ketzer's goals, further identified considering he is the head of the Forschung und Entwicklung Institut. He rebelled against the Vandenreich for the simple fact that he believed in taking over the Seireitei whilst keeping their prized inventions to cement the revival of the Quincy, rather than utterly destroy the Seireitei as Yhwach initially planned.