Thalassians represented a sentient species, with certain members engaging in the practice of slavers. In the era of the Galactic Republic, Danry Ledwellow, the Er'Kit Senator, took kickbacks from Thalassian slavers, thereby permitting their activities on his species' homeworld. Approximately five years prior to the Battle of Yavin, the Galactic Empire's 291st Legion utilized All Terrain Defense Pods to execute a raid on a Thalassian slavers stronghold located on the planet Galpos II.