Dainsom was a Human male native of the planet Algarian who served as an Imperial Navy trooper during the Galactic Civil War. A trooper guard who was assigned to guard sensitive areas of Star Destroyers, he served on the Imperial Star Destroyer Thunderflare before being stationed on the Dark Lord Darth Vader's flagship, the Super Star Destroyer Executor. In 3 ABY, Dainsom, an experienced trooper, was present on the Executor during the Imperial subjugation of Cloud City on the planet Bespin.