Altria Pendragon, also known as Artoria Pendragon or King Arthur, is a central character in the Fate/Grand Order series. She is a Saber-class Servant, renowned for her unparalleled swordsmanship and noble leadership. Altria wields the legendary sword Excalibur and is known for her strong sense of justice and duty. As a king, she struggles with the burdens of leadership and the sacrifices it demands. In Fate/Grand Order, she plays a pivotal role in battles against various threats, striving to protect humanity and maintain her chivalric ideals.