Hellsing: Ultimate X

Officially released in Japan on December 26, 2012. The English dub was released October the 24th 2014.

Plot
The zeppelin lands and opens the door for Integra and Sera to confront the major. As they walk in, Schrodinger talks to the two women before a frustrated Integra shoots him. They meet a crossroads guarded by The Captain who ppoints ot the way that will lead Integra to The Major . Seras stays with The Captain, who reveals his ultimate werewolf form to fight her. He knocks her into a vault of looted Nazi treasure. She finds lots of gold there, and The Captain kicks a tooth made of silver at her. Realizing the the is giving her the weapon of his destruction, Seras summons Pip Bernadotte to assist her as she fights. Pip encourages her, and punches the silver tooth directly into the Captain's heart, killing him.

Integra confronta the major, who is behind bulletproof glass. She attempts to shoot him to no avail, until Seras uses a huge Nazi anti-Aircraft gun against it, directly hitting the Major. He is heard laughing afterwards, with Integra commenting that he cannot possibly be alive. It os revealed that the Major is a cyborg, and Integra and him face off again. Shooting at the same time, Integra shoots the major in the head while he shoots her in the eye.

Outside, Schrodinger slits his throat and falls into the river of blood flowing through London to Alucard. Alucard is amazed at so much blood and having so much power, but the schrodinger inside him causes him to becoe unstable and die, leaving only a small red pentagram where he stood.

Epilogue
30 Years later, integra is an old woman still in charge of Hellsing, with Seras still directly under her. The vatican mentions that the time to strike Hellsing may be soon. that night, as she sleeps, Alucard appears in Integra's room and is about to drink her blood before he is shot by her. Sera busrts in, before they realize the identity of the intruder. Alucard mention how he had to fight every single soul inside him except one. He now has the power of Schrodinger, to be everywhere and nowhere.

Characters in Order of Appearance (with cameos)

 * The Captain
 * Seras Victoria
 * Pip Bernadotte
 * Integra Hellsing
 * The Major
 * Schrödinger
 * Alucard
 * Walter C. Dornez
 * Heinkel Wolfe
 * M'quive
 * The Doctor
 * She
 * Sir Gregory Penwood
 * Enrico Maxwell
 * Alexander Anderson
 * Jan Valentine
 * Rip van Winkle
 * Zorin Blitz
 * Tubalcain Alhambra
 * Luke Valentine
 * Rob Walsh

Major Events

 * Inside the Deus Ex Machina, Seras battles the Captain while Integra goes to confront the Major.
 * Alucard begins absorbing the blood of every corpse in London.
 * Pip Bernadotte's consciousness is revealed to still be present within Seras.
 * With the help of her familiar, Pip, Seras kills the Captain and rejoins Integra.
 * Schrödinger kills himself and allows Alucard to absorb him.
 * Due to Schrödinger's powers requiring the ability to perceive himself as an individual, Alucard disappears into "a set of imaginary numbers", seemingly destroying him for good.
 * The Major is revealed to be a cyborg.
 * Integra kills the Major, but loses her left eye in the process.
 * Walter is attacked by Heinkel Wolfe, but cuts off the latter's arm and leg, and makes his way into the Deus Ex Machina.
 * Walter confronts and kills the Doctor before dying himself.
 * "She", the source of Millennium's artificial vampires, is revealed to be the long-dead corpse of Mina Harker.
 * The Deus Ex Machina is destroyed, ending the Battle of London.
 * Alucard begins destroying his stored souls in order to gain control of Schrödinger's powers.

Thirty Years Later

 * London is rebuilt.
 * Makube has become the leader of Iscariot, with Heinkel as their new "trump card".
 * Alucard finally kills the last of his stored souls, enabling him to control Schrödinger's powers while still containing Schrödinger within him as his only familiar.
 * Alucard returns to Hellsing Manor and reunites with Integra and Seras.
 * Pip as Sera's familiar covers Hellsing mansion.

Trivia

 * On the Blu-Ray release, this is the second of two episodes to not have any subtitle options.