Schrödinger

Junior Warrant Officer Schrödinger(シュレディンガー准尉|Junior Warrant Officer Shuredingā) is a fictional character in the Hellsing manga series by Kouta Hirano. He is a member of the Millennium forces. He is voiced by Ryōko Shiraishi and by Laura Bailey in English.

Schrödinger is a catboy (Werwolf would be the military unit he serves in), and was created by Doc.

He has the form of a young boy, with cat ears and a perpetual smirk, dressing in a Hitler Youth uniform and holding the rank of Oberstammführer (warrant officer). Usually found sitting underneath the Major's throne like a pet, he also acts as an envoy for Millennium. Due to his ability to be "everywhere and nowhere" at the same time, he entered the Hellsing mansion without tipping off their defenses to deliver a message; after Integra orders Alucard to shoot him in the head, he later reappeared unscathed back at Millennium's headquarters. (This ability, his name, and his being feline are obviously a reference to the famous "Schrödinger's cat" scenario in quantum physics.)

Powers and abilities
The exact nature of Schrödinger's abilities has yet to be defined, although, due to the "Schrödinger's Cat" references, they could be quantum-reality based. This is indirectly confirmed by the Major - he states that Schrödinger only exists for as long as he is aware of himself. He was able to appear in Hellsing's conference room without difficulty, and also appeared to Zorin Blitz while Blitz was attempting to attack Seras Victoria's mind, indicating that he can appear in mental realms as well. Schrödinger himself mysteriously states that he is "everywhere and nowhere", possibly meaning that, if he believes that he exists somewhere, then he will.

This also explains his apparent regeneration/immortality. If he believes that he is unscathed, then he is.

History
Apart from the Doctor and the Captain, Schrödinger mostly interacts with the Major and seems to share his love of warfare, despite his current lack of fighting. In a dialogue with him, Schrödinger remarked that the Major was a "sadistic man" who takes every living person in his wake, companion or foe, with him in his "languid charge to the bowels of hell."

In chapter 77 Finesthour 2, he greets Sir Integra and Seras as they enter the landed Hindenburg II, making the mistake of continuing to call Integra "Fräulein" after the Major stopped doing so as a sign of respect (in the beginning of episode one of the OVA, Integra's uncle Richard, in the English dub, had refered to Integra as "Fräulein" when he tried to kill the girl). Integra then swiftly blows off his head (again) with her handgun. Due to his abilities he survives this blow, turning up in chapter 84 Warcraft 2. In chapter 87, Wolffang 2, Schrödinger appears again. He smiles maniacally and decapitates himself with an SS knife with the words inscribed into it "Meine Ehre heißt Treue" or "My honor is loyalty," the slogan of the SS. His body then falls into the blood that Alucard is drawing and absorbing into himself. Schrödinger was in fact the "poison" that the Major spoke of in chapter 84, Warcraft 2.

As Alucard's eyes close, Integra demands that the Major explains what is happening. The Major says that Schrödinger "carried the will of the self-observing Schrödinger's Cat" and "as long as he recognizes himself, he's everywhere and nowhere." But now that he is consumed by Alucard and is mixed with millions of other minds, he can no longer recognize himself, and by extension neither can Alucard, the one who has absorbed him. Whilst neither are technically dead, they do not exist in one place because they cannot recognize themselves, and have thus become "No more than a set of imaginary numbers."

Alucard seems to recognize his defeat, says farewell to Integra, and seems to disappear into thin air, leaving only the bloody Hellsing-pentagram on the ground, possibly symbolizing him being sealed away once again. Yet, Alucard manages, in the end after 30 years, to return; Alucard kills off the 3 millions plus souls that reside in him so he can recognize himself. In doing so, it appears that he gained Schrödinger's powers, as shown by the fact that he appeared out of nowhere in Integra's bedroom and was perfectly fine after not having drank any blood for 30 years. Before this, a span of twenty years without blood reduced him to a corpse-like state. Presumably Schrödinger's soul is still within Alucard, as he mentions that he killed everyone except one and says "and now I am everywhere and nowhere"; implying he now has full access to Schördinger's abilities.

Trivia

 * The credits of the fourth Hellsing OVA feature Schrödinger traversing a world colored in the Nazi colors, red and black, launching V1 rockets at various London landmarks which are destroyed as Schrödinger happily goes past them. As he continues to march across the world, he is met by various colored images that pay homage to the frivolous Millennium otaku omakes done by Kouta Hirano, the creator of Hellsing.