Abdan-Sho was a Voss commando active in the era of the Galactic War, a conflict fought between the Galactic Republic and the Sith Empire. In approximately 3640 BBY, Abdan-Sho, along with Kelnu Velus, a scout working for the Republic, conducted a reconnaissance of the Gormak defenses located on Fest Otur Island, which was situated to the north of the Nightmare Lands. They tasked a person aligned with the Republic to acquire prototype powered armor from the Gormak and demolish the power generators used in its creation.
During the "Fishing Facade" mission, the astromech droid T5-BD mistakenly calls Abdan-Sho "Adban-Sho."