Castlevania is an animated dark fantasy series inspired by the classic video game franchise created by Konami. It follows Trevor Belmont, Sypha Belnades, and Alucard as they battle Dracula and a growing tide of supernatural threats in a gothic world filled with monsters, magic, and political intrigue. Known for its mature storytelling, strong action, and atmospheric animation, the series helped popularize adult-oriented game adaptations and expanded the Castlevania universe for a modern audience.