Ceph

The Ceph are a mysterious alien race on Earth for unknown reasons and are the main antagonists in the Crysis series. The Ceph arrived on Earth in the form of the Tunguska Event in Siberia, Russia and sought about taking over the world after being awakened by Jack Hangreave and Ri Chan Kyong. In Crysis 3, it is revealed that the true brains behind the Ceph invasion on Earth is the Alpha Ceph