Andromeda Shun (アンドロメダ星座の瞬, Andoromeda Seiza no Shun?, shun meaning "twinkle"), also known as Shun is a fictional character from the Saint Seiya universe created by Masami Kurumada as one of the main protagonists of the media franchise, which originated in the manga written and illustrated by Kurumada, later adapted to anime, and subsequently inspiring soundtracks, OVAs, movies, video games, and other collectibles. He is arguably one of the strongest characters in the series, although his gentle disposition and kind nature tend to hold him back from using his full power, until he is forced to do so. Shun is also the younger brother of Phoenix Ikki, a fellow bronze saint.

Source: Wikipedia