Mordred is the king of Etruria in Fire Emblem: The Binding Blade, and the grieving father of Prince Myrddin who is thought to have died in an accident. As a result of his grief for his son, his leadership becomes weakened and his closest advisor, Roartz takes advantage of the situation by siding with the rival Kingdom of Bern. Later, when Roy and his army succeed in restoring order to the Western Isles, Roartz initiates an uprising against Etruria and has his forces hold King Mordred as a hostage to attempt to ensure the cooperation of Cecilia, Perceval and Douglas, the Three Generals of Etruria.
Mordred is a character in Arthurian legend, and a traitor who fought King Arthur. Mordred is the brother to Gawain, Agravain, Gaheris, and Gareth. He is occasionally depicted as the illegitimate child of Arthur and his sister Morgause.