He is the first son of the hero, Crusader. 10 years ago, Steel Titan kidnapped him and his mother. His mother refused to say anything so Titan shot her in the head in front of her son. This event scarred Jack for life and he became the vigilante, Hunter, with the help of his father. He swore that no one would ever experience his tragedy and to take his revenge. In the present time, he is the sole protector of Colland City while finding clues on Titan's whereabouts in the background.