Konami

Bio:
Born to a human mother and a vampire father, Konami was destined to live the life of an outcast. Scorned by all societies, his parents raised him in a secluded village not found on modern maps. With no conventional friends or schooling he spent much of a his childhood learning his mother's trade: Metallurgy. As years became decades Konami's alchemical work became more advance, and he became fascinated with the idea that an amazing elixir could be distilled... One that would counter his need to feed on human blood.

By chance his quest for rare components led him into contact with Careless (who had just joined the Russian Paranormal Investigations Division) and the two became friends. Careless helped him find some of the components he was looking for and Konami gave Careless the idea of starting a traveling rock band. The two parted ways shortly after.
Six years later Konami finally succeeded to creating the elixir and has been recruited by Careless in the Hunt of Koschei... Incidentally, Konami is an amazing guitarist.
It's rumored that Konami was one of the first musicians to ever use an electric guitar and that he secretly transmuted the ancient machine into the guitar he's been seen playing.