Zangetsu (斬月?) is a character in Bloodstained: Ritual of the Night and Bloodstained: Curse of the Moon. He is a demon hunter who hails from a country in the East.
Coming from a small country far away in the East, Zangetsu specializes in fighting demons. He makes his way to England when the demons first show up 10 years before the main story of Bloodstained begins.
He uses a dual katana fighting style along with Japanese "ofuda" paper incantations to destroy his demonic foes.
During his long battle to keep the demons at bay he loses his left eye and right arm. Using a special Ofuda spell he is able to animate a wooden prosthetic arm to nearly the same level of mobility as his original arm. The Ofuda that covers his missing left eye grants him the ability to see both auras of both the living and dead.
He lost a great deal of friends during his 10 years of fighting, creating an absolute hatred for not only the creatures themselves but also the Alchemists that brought them to the Earth.