Walter C. Dornez

Walter C. Dornez is the butler of Integra Hellsing, but he is at the same time, a deadly combatant, wielding high-velocity microfilament wires (dubbed by fans "The Dental Floss Of Doom") and fought together with Alucard in the Second World War to stop a certain group's attempt at creating an undead army. During that time, Walter was known as "The Angel of Death."