Tristan is a main character is Pokémon (Master ventus), he is Andy's best friend and Gym Leader. His dream was to become a Gym Leader sponsored by the Unova League. He traveled with Andy from time to time during Andy's travels in Unova, and he traveled with Andy in the Kanto Arc after Andy arrives in Celdon City. When Andy went to Hoenn, Tristan was offered to travel with him but he decided to stay in Aspertia City since he's finally a Gym Leader.