The Skeksis, also known as Lords of the Crystal or Regents of Thra, were a reptilian bird-like race that ruled over Thra throughout the Age of Division. They originated during Thra’s second Great Conjunction, when the Fallen urSkeks attempted to purify themselves through the heat of the three suns shining on the Crystal. Instead of being cleansed of their darker natures, each urSkek was split into two beings; Skeksis and urRu. The Skeksis were the embodiments of the violent, materialistic side of the urSkeks’ nature.