Grand Moff Lynch Hauser held a prominent position of authority within the Galactic Empire.
In 19 BBY, after Emperor Palpatine declared the formation of the Galactic Empire, Hauser was appointed to the rank of Grand Moff of the Dustig Oversector, taking command of the 17th Sector Army.
Subsequently, Hauser tasked TIE pilot Ranulf Trommer with the mission of spying on Governor Grigor, who was known to be corrupt. Eventually, Trommer managed to transmit a report containing evidence of Grigor's unauthorized activities. Upon receiving this information, Hauser, accompanied by Admiral Trommer, Ranulf's father, traveled to M'haeli to personally witness the betrayal of Governor Grigor.
When Ranulf inquired about Hauser's plans for Mora, the leader of the Rebel resistance on M'haeli, the Moff informed him of his intention to execute her. However, Ranulf, who was in love with the rebel, refused to accept this decision and, as a result, killed a stormtrooper under Hauser's command in order to free Mora. Although Hauser had a clear opportunity to shoot Ranulf, he was interrupted by Ranulf's father. Consequently, Mora and Ranulf successfully escaped and fled off-world. Following Ranulf's desertion, Hauser issued a bounty for his capture.