Anderson, augmented by the Nail of Helena, managed to critically injure Alucard during their final duel, which created a chain reaction that destroyed all Alucard's familiars except Luke Valentine and the Hellhound. Although Alucard recovered thanks to Seras' intervention and successfully defeated Anderson, he was then attacked by Walter, who had undergone vampirization by Millennium in order to kill Alucard when he was most vulnerable. However, Walter was tricked (via illusion) into killing Valentine instead; before he could get another chance to land a fatal blow, Alucard began absorbing the blood of the millions who died in the Battle of London, thus giving himself an indefinite number of regenerations and a new army of the dead. Unknown to Alucard, Schrödinger had killed himself and fallen into the river of blood on the Major's orders; mixed in with the millions of other souls Alucard had consumed, he was unable to recognize himself and therefore neither he nor Alucard was able to exist, causing Alucard to vanish. During the series' ending, after Alucard destroyed every additional soul except Schrödinger's in his body, he gained the ability to exist "everywhere and nowhere".