Mablung is one of the wardens of Doriath. After Saeros’s death, he counsels Túrin to return to Doriath to ask Thingol’s pardon, but Túrin refuses. Later, Mablung witnesses Morwen’s disappearance and Nienor’s memory loss. When he reunites with Túrin, he explains their fates, confirming for Túrin that his sister Nienor is also his wife Níniel and driving Túrin to suicide. Mablung regrets being used as an instrument of Melkor’s curse on the children of Húrin. He’s killed when Melian departs Doriath and the dwarves of Nogrod invade to steal the Silmaril.