Who is nazo the hedgehog

Nazo is a cancelled Sonic character. Nazo is a light blue glowing character that showed up in a Japanese trailer for the Sonic X series. People say that he is Sonic's long lost bro. Others say that he is the evil half of sonic because he has Sonic's shoe style. Both rumors cannot be decided on true or untrue because this mystery character never actually ended up in the series, and the producers never explained who this was supposed to be. Since the character doesn't exist, he also didn't have a name. The name "Nazo" was given to him by fans, and nazo means mystery in Japanese. I hope that answers your question a little more clearly than the last person who answered this question.