The pod people are a race of
nomadic, extraterrestrial
parasites originating from a now dying
planet. Realizing that it was only a matter of time before the planet's resources would be completely depleted, the
pods somehow evolved the ability to defy gravity and leave their planet's atmosphere in the search of a new world to colonize. For millennia, the
pods floated in space like spores, propelled by the solar winds, some occasionally landing on inhabited planets. There, they would replace the dominant species by spawning emotionless replicas; the original bodies would then disintegrate into dust once the duplication process was completed. They would then consume all of the planet's resources, only to then leave in search of yet another new world. Such a consumption was apparently the fate of the civilizations that once inhabited Mars and the Moon. The
pods' sole purpose in life was that of individual survival, with no attention given to the civilizations they conquered or the resources they squandered. The duplicates had lifespans of only five years, and could not sexually reproduce. Their invasion of
Earth was short-lived: unable to tolerate the sheer determination humanity displayed in defense, the
pods abandoned the planet, leaving behind a small population of duplicates, who died off shortly after.