Tucker was a Mon Calamari who served as a mercenary in a unit that worked for House of Tagge scion Ronen Tagge. Tucker, alongside several other mercenaries, was dispatched to find Doctor Eustacia Okka as part of Tagge's search for the artifacts known as the Rings of Vaale. Okka refused to help Tagge, escaping with the crew of rogue archaeologist Chelli Aphra. The mercenaries followed Aphra's crew to the city of Vaale on the planet Dianth, where the Rings were supposedly located.