"I know you're familiar with the ancient Rakata Infinite Empire. These people predate them by eons." ―Colonel Jadick. This advanced species was noted as being one of the oldest civilizations and most ancient in the galaxy.
The Rakata species from Star Wars KOTOR. They were the rulers of the Infinite Empire, which existed years before the Republic was formed. Consisted only of 500 systems, the Empire used both the Star Forge and the power of the Rakata to subdue other species – before their demise because of riots and mysterious plague 25 000 BBY.