The people from the Twelve Colonies of Kobol created the Cylon robots. They told them to work for them and fight for them. The Cylons stood up to the people from the Colonies and fought against them. The Cylons went away after the war and changed into real people as well as robots. After forty years, the Cylons came back and almost killed all the people in the Colonies. They went after the people that were not killed in many ships.