We do not know too much about ninjas and their origins, but we know that they where professionals at killing, offering their services to great and important people during the Edo Age. Edo Hanzo was identified to be the most excentric - non talkative ninja that ever was. Nobody knew anything about him while alive, because he kept himself in silence the mayority of his life. Nobody dared to ask something to him. He was feared and respected. Some people say that he was kind and honor guided.