Mareesee was a Volpai sniper who resided on Nar Shaddaa, working for Jega's Squad. When the droid bounty hunter 4-LOM—under the control of Doctor Cribiriz Idollax—attacked his partner, Zuckuss, outside of the establishment from which Mareesee's crew operated, the crew, including Hormf, Trot, and Kaj, fought back against the droid, with Mareesee shooting 4-LOM with a IQA-11 sniper rifle. Zuckuss was ultimately able to locate Idollax and kill him, freeing 4-LOM, who departed.