Built from machinery and the Traveler's Light, Ghosts guide their Guardian companions in the quest to reclaim our solar system.

Every Ghost seeks out its Guardian among the ancient dead. The Ghost serves as scout, librarian, and mechanic, waking ancient machinery and cracking alien codes. In the right situations, a Ghost can even save a Guardian from death.

But Ghosts are not immortal. As far as Guardians know, every loss is irreplaceable.