"Hellsing" is a Japanese manga series created by Kouta Hirano that follows the Hellsing Organization, a secret group dedicated to hunting and destroying supernatural threats, particularly vampires. The organization is led by Sir Integra Hellsing, who commands a powerful vampire named Alucard to assist in their mission. The story is set in a dark, gothic world filled with horror elements and explores themes of faith, duty, and the nature of evil. The series has been adapted into several anime adaptations and films, expanding its popularity beyond the manga. It features a mix of action, horror, and supernatural elements, with a distinctive art style. "Hellsing" has garnered a dedicated fanbase and is known for its intense battles and complex characters, making it a significant work in the horror genre.