Son-O is a fictional character from manga series of Tough. The eldest Miyazawa sibling that was believed to have been murdered by Kiryu, according to the series' back story. He later resurfaced as the Battle King of the Hyper Battle, a title bestowed on him because of his great fighting skill and his winning of the last tournament. He also has the ability to change his appearance with the use of a special technique.

Community content is available under CC-BY-SA unless otherwise noted.