Loski was a male Klingon in the 23rd century. By the early part of the century, he had attained the rank of Admiral, and was made military governor of a three-planet star system (later dubbed System Loski) near the Klingon-Federation border. While ENT episodes "Affliction" and "Divergence" appear to contradict much of this story, it is possible that Loski endeavored to recreate the 22nd century mutagen for his own purposes.