The manga series Hellsing, created by Kouta Hirano, was first serialized, marking the beginning of the franchise.
The original Hellsing manga series concluded with its final chapter, completing the original story arc.
The Hellsing anime television series was first aired, expanding the franchise's audience.
The Hellsing Ultimate OVA series, a more faithful adaptation of the manga, began releasing.
The final episode of the Hellsing Ultimate OVA series was released, concluding the animated adaptation of the full manga story.
The Hellsing family establishes the Hellsing Organization dedicated to protecting England from supernatural threats, particularly vampires.
Hellsing Organization sets up its main base of operations in London to efficiently combat supernatural entities.
Integra Hellsing binds Alucard, the powerful vampire, to serve the Hellsing Organization and protect England.
Hellsing Organization engages in special operations against vampire and Nazi occult threats during World War II.
The rogue Nazi vampire group Millennium launches an assault on England, prompting the Hellsing Organization to mobilize.
Seras, a former police officer turned vampire, joins the Hellsing Organization as Alucard's apprentice and ally.
A massive battle takes place involving Hellsing forces, Millennium vampires, and the Vatican's Iscariot organization.
The Hellsing Organization triumphs over Millennium, restoring peace and stability to England's supernatural landscape.
