Hellsing is a tV series anime that premiered in fall 2001, produced by GONZO.

About the production: the story comes from a manga, there are 13 episodes of about 23 minutes and its current status is "finished".

Its main genres are action, horror and supernatural, with themes such as Vampire, Primarily Adult Cast, Super Power and Noir.

On AniList, Hellsing has an average score of 72%, a good score, and appears on 148,293 users' lists.

Hellsing follows the antiheroic vampire, Alucard, and a police girl-turned-vampire, Seras Victoria, two vampires employed by the vampire-extermination group of England, the Hellsing Organization. Slowly but surely, through their active duty, they find a new breed of vampires beginning to arise. (Source: Anime News Network)

Official synopsis from AniList.