Dumerin, a Chagrian major within the Galactic Republic, was a male individual who existed throughout the time of the Galactic War. In 3640 BBY, specifically during the Battle of Ilum, he requested assistance from a citizen of the Republic to eliminate both the Imperial turrets and the maintenance droids that were in the process of fixing them.
The character Major Dumerin is featured as a non-player character (NPC) on Ilum in the video game Star Wars: The Old Republic, where he initiates the quest titled "Icy Destruction."