Nine is a troubled fox (emotionally hurt who wants to protect himself physically and emotionally from everyone) who needed a friend and can do good actions. But he's not exactly the most trustworthy due to having his own agenda. He is bitter due to being an outcast for years. He's far more self-isolating and aggressive. His personality seems focused around the part of Tails who likes to work alone in his lab. He has the two tails he’s ashamed of, he’s smart but anti-social.