Koyanskaya of Light, also known as Tamamo Vitch Koyanskaya, is a prominent character in Fate/Grand Order, specifically appearing in the Lostbelt storyline. As an Antagonist and a Beast-class Servant, she embodies the Beast of Humanity's evil nature and is a cunning and manipulative figure. Her character is known for her fox-like traits, intelligence, and a deep-seated ambition to achieve her goals, often through deceitful and strategic means. In the game, she plays a crucial role, challenging the protagonists and complicating their journey.