Viy is a supernatural being in Slavic folklore, often depicted as a creature with the ability to control and influence the forces of darkness. This entity is most famously featured in Nikolai Gogol's short story 'Viy,' where it serves as a powerful symbol of fear and the unknown, representing both physical and psychological challenges faced by individuals. The story captures the essence of Russian Romanticism by exploring themes of the supernatural, fear, and the struggles between good and evil.