Dunban is a soldier and a hero with a true heart. He's always willing to put his own life on the line to save everyone else. He's one of the most mature members of Shulk's party if not the most mature. He does at times let his boldness get to his head, but he tries to avoid being a coward and motivate his fellow comrades to do the same. Despite being degraded to his left arm, he still continued to fight rather than complain. As second-in-command and mentor/advisor of the team, Dunban is the voice of reason and speaks for everyone in some of the most dire times.
Dunban almost never forgets that family and friends are important even in the battlefield. He serves as a mentor to Shulk and Reyn; but even though he has patience, he knows better than to be their babysitter and expects them to depend on their own strength.
Like Shulk, he is very protective of his younger sister Fiora. As her older brother as well as the only biological family member she has close to him, her safety and well-being are his biggest concern. When he thought he lost her, he tried to stay strong and not let his emotions get the best of him; but he loses his temper after he finds out who "murdered" her. And it is later revealed that he cries when no one is around.
Dunban is available as a DLC Mii Costume for the Mii Swordfighter. It costs $0.75 for one version and $1.15 for both versions. A Dunban Mii QR Code is also given in the DLC page of the website. It is available since June 14th, 2015.