The Sage was the leader of a subterranean civilization on an unnamed planet, which had become dependent on the power of the crashed wreckage of a Borg cube. The Sage was connected to the ship through an Borg alcove, allowing her to control the power output, and also apparently giving her access to some limited Borg knowledge.

When this civilization was first discovered by the crew of the USS da Vinci in 2377, the Sage was an elderly woman. During the crew's visit, the Sage died, and Commander Sonya Gomez was unwillingly attached to the alcove in a manner akin to assimilation, becoming the new Sage. Fortunately, the S.C.E. team was able to free her, and another native, named Tey'sa, took her place as Sage. (CoE eBook: The Light)