Loqi and Poxus began recruiting many members of Poxus' Sith Empire like Sith Sentinels, Sith Troopers, Sith Captains, Sith Templers, Dark Jedi and Sith Lords like Darth Morbidis, Darth Fang and DarkTaskMaster. After the Mandalorian Wars, Lord Poxus found a Jedi who followed Revan to war and helped Revan win the war: Jedi Master Raynor Vala. Poxus corrupted Vala and took him to his academy as another one of his students, promising him revenge upon the Jedi for forbidding them to fight in the Mandalorian Wars, but Poxus lied. Poxus also found one of the surviving Mandalorians named Kazius and took him to the academy as his prisoner.
Poxus then began taking slaves into his Sith Empire to do work for him. His slaves were Jawas (including the droid mining inventor, Teeqi), Biths, Wookiees, Humans and Ithorians. He had them digging for relics at the various Sith tombs and temples scattered across Korriban. Kazius learned about all of this even while in prison. Poxus ordered all of his slaves and a few apprentices to investigate some ancient Sith ruins on Korriban that lay many tombs, including the tomb of Ezer Arden and the tomb of Thulsa Gaul. Kazius even knew the way to there. The reason why Darth Poxus was doing all this is cause he was consumed with unlocking secrets of the Dark Side of the Force; he believes that through all these lost tools and Sith artifacts, he can achieve a great level of power.
Poxus found a force-sensitive child, a boy named Jett Darklighter and took him to his sancturay, where Lord Morbidis watched over the boy. The player's character eventually defeats and kills Morbidis.