Question: Who was the member of the Manchu Aisin Gioro clan that became the nominal but powerless head of state of Manchukuo?
Sentence (from "Politics of Manchukuo"): The Manchukuo regime was established four months after the Japanese withdrawal from Shanghai with Puyi as the nominal but powerless head of state to add some semblance of legitimacy, as he was a former emperor and an ethnic Manchu.
Relevant evidence: Yes