Como dizer "Testa de ferro (líder sem poder real)" em inglês

Figurehead

I know my wife is the company's figurehead, but I'm the one who really have power of decision.

Commonly cited figureheads include Queen Elizabeth II, who is Queen of sixteen Commonwealth realms and head of the Commonwealth, but has no power over the nations in which she is not head of state and does not exercise power in her own realms on her own initiative. Wikipedia

OBS.: "Figurehead" também pode ser traduzido como "figura de proa", uma imagem que no passado era fixada na frente de um navio.