Trailian sithspawn

The Trailian sithspawn were a race of the Trailian species created by Emperor's Hand Cronal. Through a process of genetic engineering and Dark Side experimentation, he transformed a number of the once peaceful Trailians into powerful warriors. Although mentally unstable, he sent them on a number of missions to attack neighboring worlds of Tralia. This race was eventually defeated by a group of offworld adventurers.

Behind the scenes
This group were described in The Monster Maker as "a twisted dark race of warriors." Although not labelled as Sithspawn, their method of creation, thorough "genetic engineering and Dark Side power", is consistent with the description of the creation of other Sithspawn by Cronal/Blackhole.