Yugai

The Yugai are one of the races that settled the Rigel system in the times of antiquity, establishing a colony on Botchok. They were the first species to encounter the native Orions, when, around 21,000 BCE (reference stardate -200/00), a number of the then-primitive and barbaric species attacked a Yugai colony. As no native sentient life had been previously observed on Rigel IV, it was an astonishing discovery, but the Yugai commander merely destroyed the attackers and their village and promptly forgot about them. (The Orions: Book of Common Knowledge)