| It is a soldier's duty to follow orders.
Hauser was a talented military officer who served as the commander of the Muse City army. Due to his capable command, he had been able to stave off an invasion of the City-State of Jowston by the Highland Kingdom for some time prior to the outbreak of the Dunan Unification War.
He has served Muse City as a soldier since at least Solar calendar SY 446, when he was on hand to help Anabelle when she and Viktor investigated an arms merchant ring attempting to foster war between South Window City and Two River City.
As a soldier, Hauser held a very strict attitude and made sure that all his actions as such were made on the basis of the law, refusing to fight as a military officer for any reason other than the law. When Muse City fell to the Highland Army, he escaped the city with Jess before eventually joining the New State Army in Tinto City.
After the war, Hauser became the commander of the Dunan Republican Army.