Lady Avalon, also known as Artoria Avalon, is a powerful and enigmatic character from the Fate/Grand Order series. She is an alternate version of the legendary King Arthur, possessing immense magical abilities and a strong sense of justice. As a pivotal figure in the story, Lady Avalon guides and aids the main characters in their quest to save humanity. Her wisdom and combat prowess make her a respected leader and a formidable opponent. Lady Avalon embodies nobility and strength, often facing difficult decisions that test her character and resolve.