The Elden Beast is the physical manifestation and vassal of the Greater Will, the Elden Ring itself incarnated as a living entity descended from the stars. The Elden Remembrance defines it unambiguously: "It was the vassal beast of the Greater Will and living incarnation of the concept of Order." It is cosmic Order made flesh, an extraterrestrial entity sent to found and maintain the Golden Order in the Lands Between through Marika. In the final boss fight, it emerges from the body of Radagon/Marika after Radagon's defeat, revealing that the ultimate battle is not against a human or demigod, but against the very Concept of Order, the original source of all the suffering in the Lands Between. It does not speak, it is beyond language, being pure Concept. Its attacks: constellation formations, shooting stars, blasts of sacred energy, every mechanic reflects its stellar origin and cosmic nature. Its defeat does not destroy the Elden Ring but frees Marika to allow a choice of reconstruction. No armor set exists in-game (not droppable), but its inherited incantations (Elden Stars, Fundamentalist spells) reflect its essence as cosmic Order.