In Warframe, players control the members of the Tenno, a race of ancient warriors who have awoken from centuries of cryosleep to find themselves at war with the Grineer, a matriarchal race of militarized and deteriorated human clones built upon metal, blood, and war; the Corpus, a mega-corporation with advanced robotics and laser technology built upon profit; the Infested, disfigured victims of the Technocyte virus, a reference to Dark Sector; and later the Sentients, an alien force of mechanical beings returning from the Tau system after being driven back centuries ago. To fight back, the Tenno use remotely controlled biomechanical suits to channel their unique abilities — the eponymous Warframes. Later missions reveal that the Warframes are actually biomechanical shells which are connected to the consciousness of the actual Tenno, human children who were given unpredictable powers by the Void. Those powers led to them being demonized and they were exiled into stasis pods on the Moon. The Tenno and their Warframes were used by the Orokin Empire in a desperate fight against the Sentients and stopped their invasion. However, for unknown reasons, the former turned on the latter and caused the Empire to collapse. The Empire shattered with the remnants becoming the Grineer and the Corpus while the Tenno were placed in stasis until centuries later.