He's an immortal, and is already more than a thousand years old. He's collected many books in his life, and thus decides to make a public library about it. He was born immortal, a miracle that only appears once every million years. He's immune to anything, poison, Stan wounds, anything, except for one, and it is a certain dagger he himself has never encountered yet. Time was slow for him, even a year seems to just pass by like a second, witnessed many loved ones die and used to it.