Otherworld (Stone Island)

According to "The Light & the way", "there is a thin, mean world that exists between life and death. They prey upon transitory souls like salmon spawning upstream". Split into drones, workers and warriors, the creatures of this world look like twisted zombies. Cramming their advanced technology into Sorrel when he died of Carbon monoxide poisoning to invade Earth, but failed when Jon Prentiss sacrificed himself.