Jonathan Joestar is the main protagonist of the first part of the manga and anime series JoJo's Bizarre Adventure, created by Hirohiko Araki. He is known for his strong sense of justice, noble character, and determination to protect his loved ones. Born in the late 19th century in England, Jonathan comes from a wealthy family and is trained in the art of Hamon, a martial arts technique that allows him to combat supernatural threats. Throughout his journey, Jonathan faces off against his adoptive brother, Dio Brando, who becomes a powerful vampire. Their rivalry drives the plot of the series, showcasing Jonathan's growth as a fighter and his unwavering resolve. His legacy continues to influence future generations of Joestars in the ongoing saga.