Chloe von Einzbern

Born from the latent magical reserves of Illya and the essence of the Archer Class Card, this mysterious entity is also known as Dark Illya. Though she shares a profound connection to her creator, she operates as a distinct being shaped by concentrated power. Initially appearing as a shadow of Illya's true potential, her existence serves as a pivotal element in the unfolding struggle for control over the Grail.