Mordred Pendragon, also known as the 'Knight of Treachery,' is a character from the Fate series, particularly in Fate/Apocrypha and Fate/Grand Order. She is the illegitimate child of King Arthur, created by sorcery using King Arthur's DNA. Mordred is known for her rebellious nature and desire to claim the throne, challenging her father in the process. As a Saber-class servant, she possesses immense combat skills, including her iconic sword Clarent. Despite her brash demeanor and fierce ambition, Mordred seeks acknowledgment and respect from her father, making her a complex and intriguing character.