The homeworld of the Ghost Knights is Errantes Domum, otherwise known as the Hunters Hall or the Home-Asteroid. It is a 160 km spherical asteroid, the average surface thickness being around 5 km, that was hollowed out centuries ago by imperial and renegade mining before being captured by a fleet of pirates and used as their home base moving through the galaxy. The Ghost Knights, having only been formed and facing their first mission, were sent in to clear out the pirates and capture the asteroid, its fate to be reviewed at a later date.