Schrödinger(シュレディンガー准尉|Shuredingā) is a member of the Millennium forces, and is usually directly under the command of The Major. He is voiced by Ryōko Shiraishi and by Laura Bailey in English.
Schrödinger is a Junior Warrant Officer serving in the Millennium military unit of Werewolf, and was created by Doc.
He takes 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). In the OVA series (Hellsing Ultimate) Schrödinger can be seen to have a tail when Doc tells him he can look at the Captain's guidebook, Though previously in the same scene he is shown to not have one and this is therefore normally associated to be a reference to the Captains werewolf characteristics. Usually found sitting near 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 has proved to be a useful spy and messenger for Millennium's forces.
Abilities
The exact nature of Schrödinger's abilities has yet to be defined, although they are 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, despite the high security of the building at the time. He 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 often states that he is "everywhere and nowhere", possibly meaning that, if he believes that he exists somewhere, then he will. In essence, his powers can be summed up as 'I think, therefore I am.' This also explains his apparent regeneration/immortality. If he believes that he is unscathed, then he is.