The Precursors were a race of beings that lived in the Twilight Cage long before the Nocturnus Clan were brought there by Argus.
They are never seen in the game, but they have left items known as "Precursor Tablets" that can be found on all of the colonies. Each of the tablets can be deciphered by Nestor.
- "Precursor" is Latin for "forerunner". This could symbolize the Precursors being a sort of forerunner in the Twilight Cage.