Originally he was a good-natured young man before he was randomly chosen to be the "source" of his village's evil and tortured until death. His hatred for the world became his very nature but he forgave humanity and accepted it, both good and evil. He believes that "all the world's evil" is simply a misnomer and that humans themselves are the source of all evil. In Hollow Ataraxia, Avenger usually has a lazy and laid-back attitude, lacking any sense of justice. This is best shown when he decides to kill innocent people in order to attract the attention of a Master and their Servant (since he believed it was the easiest way). He is also known to be sarcastic, cynical and mercilessly mocking towards the people he interacts with.