Jonathan Joestar(ジョナサン・ジョースターJonasan Jōsutā), nicknamed JoJo(ジョジョ), is a fictional character created by Hirohiko Araki. He is the main protagonist of Phantom Blood, the first part of Araki's manga series, JoJo's Bizarre Adventure, which debuted in 1987. He is the son of the wealthy George Joestar; an honest, kind, and positive young man whose life is fraught with tragedy.