Keno Fasris Invern, known as Evileye, is a powerful magic caster and a member of Blue Roses, one of the strongest adventurer groups in the Overlord series. She is a vampire with a mysterious past and displays a cold and serious demeanor, often acting as a strategist for her team. Despite her aloof personality, she is deeply loyal to her comrades and holds a particular admiration for Ainz Ooal Gown, the protagonist. Evileye plays a crucial role in the series by assisting in battles against formidable foes and uncovering conspiracies that threaten their world.