Miquella
Miquella is a significant, though largely unseen, character in the lore of Elden Ring. He is known as the Twin of Malenia and the wisest of the demigods, the child of Queen Marika the Eternal and King Consort Radagon. Miquella possessed an unparalleled innate magical talent, even as a child, and was known for his ability to bestow a powerful slumber upon those afflicted by curses or debilitating ailments. His primary objective was to escape the influence of the Greater Will and to find a way to elevate the Lake of Rot, a blighted land.
He is famously associated with the Haligtree, a colossal, magically sustained tree he cultivated as a sanctuary.
The narrative suggests that Miquella was abducted from the Haligtree before his plans could be fully realized.