They achieved the eternal life they sought, but the price… was that they became slaves of the bridge. Day and night, throughout their eternal lives, they slave away to rebuild the Bridge of Immortal Treading, which of course, can never be rebuilt. Everything in the world comes with a price… a price….
They are beings, who in exchange for eternal life, had their own wills dissolved and became slaves to the Bridge of Immortal Treading. After becoming slaves to the bridge, they then strive to rebuild it, something that will never truly come to a pass. [1]