Dead Zone

Alucard, Seras and Walter continue to fight on the Valentine Brothers, despite having the deceased Hellsing commandos rise as ghouls to add up to their ranks. Luke fights Alucard with the latter defeating him. As Seras and Walter continue to eliminate the other ghoul soldiers, Jan faces Integra and the Round Table but decides to commit suicide after Integra shoots him with mercury-filled bullets.

Brotherhood

Seras and a team of Hellsing commandos raid a warehouse district after reports of a supposed cult emerge, with a dead vampire and a bomb trap set to wear out some of their manpower. Integra attends a covert meeting with a secretive government organization known as the Round Table when two vampire brothers named Luke and Jan Valentine launch a surprise attack on the Hellsing mansion with a large ghoul army armed with guns and shields. As they overwhelm the mansion, Hellsing soldiers with Alucard, Seras and Walter fight off the vampire hordes.

Innocent as a Human

A Snuff film featuring a man being killed on screen by a Vampire also has a Hellsing soldier in the background, forcing Integra to deploy Hellsing and Seras to investigate the film and find out who is responsible for broadcasting the film and end further snuff film broadcasting before the broadcasters would reveal the true name of the Hellsing Organization.

Sword Dancer

Hellsing Intelligence has reported that a mysterious computer chip implanted on a human allows them to be artificially turned into vampires. A foreign college student, already deceased, comes back alive after having the chip removed. After armed policemen were killed in the morgue, Seras goes along with a Hellsing paramilitary squad to take him out. A Vatican-based priest named Alexander Anderson appears in the scene and murders the entire unit and incapacitates Seras before Alucard comes to save her life.

Club M

Seras Victoria struggles to realize that her former life as a D-11 officer is over, and that she is now a vampire. However, her thoughts are interrupted as she, Alucard and a unit of Hellsing commandos are deployed to track down and kill two vampire teenagers who murder families with small guns. Seras has a crisis of conscience when she is ordered to kill one of the two teenage culprits.

The Undead

Integra Hellsing takes command of a small Hellsing unit in Cheddar after hearing reports of people in the village going missing. After D11 teams were deployed to investigate with several deaths, Alucard is deployed. Seras Victoria, a female D11 operator, is fighting her ex-D11 colleagues that turned into ghouls. Alucard eliminates the ghouls and their master, a vampiric priest. But Seras is critically wounded in the gunfight, and Alucard turns her into a vampire to save her life.