were both killed during the Zero Reverse incident, so he grew up an orphan in the city of scrap, Satelite. He was always alone and never bothered to find friends, until later in his teens he met Yusei, Crow and Kiryu. Together they formed a duelist team known as "Team Satisfaction" with the aim to conquer all of Satelite. They were the best duelists out there and soon they managed to conquer all of Satelite's zones. However, after they climbed to the top, Kiryu's attitude changed and he started using violent and unorthodox methods to get whatever he wanted. This caused Team Satisfaction to collapse. Later, Jack mostly hung around Yusei and a couple of his friends. At that time he got his ace monster, Red Demon's Dragon (Red Dragon Archfiend).
