The Immortal Lions, more commonly known simply as the Immortals, are a group of Blue Mages that serve in the employ of the Empire of Aht Urhgan functionally as an elite guard in Final Fantasy XI. They are stationed around areas controlled by the empire, including in Aht Urhgan itself as well as at each of the various staging points controlled by the Empire. It came with a price, however: no known Immortal lived to the end of his natural lifespan. Also, using Blue Magic put enormous strain on the user, usually putting them through a great deal of pain.