 Sadie becomes the host of Isis in "The Red Pyramid" and continues to study the goddess's path throughout the series.She also becomes romantically involved with one of the Brooklyn House initiates Walt Stone and also with the god Anubis, though her relationship with either is not formalized until after Walt becomes the "eye" of Anubis in "The Serpent's Shadow".She has caramel-colored hair and fair skin, some traits inherited from her mother Ruby.