Collan Eislo, founder and leader of Apex Society The Apex Society represented a Sith cult. It existed under the direction of the Human known as Collan Eislo.
This Apex Society consisted primarily of nobles who were unfulfilled and were interested in wielding the capabilities of the dark side of the Force. They also desired to utilize the wisdom of the ancient Sith to amplify their own reputations. Certain members held the conviction that their leader, Collan Eislo, received guidance from the spirits of dead Sith Lords, figures like Darth Revan along with Darth Plagueis. Eislo was convinced that acquiring the mask belonging to the ancient Sith Lord Darth Nihilus would grant him enhanced Force abilities. Consequently, he resolved to locate it, assuring the Apex Society members that once he possessed the artifact, he would ascend to the position of their master.
Ultimately, Eislo and the Society tracked the artifact's location to the planet named Volik, and they journeyed there with the intention of discovering it.