Stream anime episodes online for free. Watch Yu-Gi-Oh! GX Episode 129 English version online and free episodes. Anime Episode guide, Chapter Yu-Gi-Oh! GX Episode 129 English dubbed Unleash the Dragon (1) Marcel decides to finally take care of Jaden, forcing him into a duel. While Jesse and Axel head off to find Rainbow Dragon’s capsule, Jaden and the others make their way to Marcel. However, Marcel has the Duel Ghouls advancing towards them, and one by his friends step up to hold them off while Jaden gets to Marcel. Eventually Jaden and Blair make it to the duel arena. The duel starts and Marcel quickly tricks Jaden and gets the advantage. However, Jesse finally finds the Rainbow Dragon and decides to join Jaden and have a tag team duel against Marcel.