Thanks to centuries of isolation and an obsession with “pure” Sith bloodlines, the Empire has institutionalized its prejudice against non-human species. But a few Imperials take this prejudice to new levels, seeing aliens not merely as inferior but as a plague to be wiped out. These extremists are outside the Imperial mainstream and represent a counterpart to the progressive movement that recently opened the gateway for aliens to become Sith.
Commander Vergost is an ideologue who has spent his career pursuing the elimination of “alien filth.” Although respected for his effectiveness by the Moffs, his own obsessions have limited his advancement inside the Empire. When he realized that the Hutt Cartel's favor might be gained through the elimination of the Evocii population, he saw it as a chance at vindication‒an opportunity to prove, once and for all, that his terrible science of mass murder could directly benefit the Empire.