life on Earth 2,000 years prior. Battlestar showrunner Ron Moore comments: "[Ellen and Saul Tigh have] always been Cylons, and there’s something profound about that. They’re a married couple who just have to go at it periodically and just have major issues and major problems. But the bond between the two of them was something that literally could not be broken. And I thought that was a really interesting and ultimately very positive thing to say." In "No Exit" it is revealed Ellen Tigh and the other Final Five Cylons (Saul Tigh, Tory Foster, Samuel Anders, and Galen Tyrol) were working on Earth to recreate resurrection technology, which had been lost to the thirteenth tribe after they left Kobol and learned to sexually reproduce. After Earth was destroyed by their version of the Centurions, the Final Five were resurrected aboard a ship they had placed in orbit. Ellen and the other Final Five Cylons travelled to the remaining twelve colonies to warn them of the dangers of artificial intelligence, namely that they should treat their creations with respect. Without FTL drives, their journey to the colonies took several thousand years, although they experienced a minimal passage of time due to the relativistic nature of their travel. When Ellen and the other Final Five Cylons reached the colonies, the Cylon War had already begun. To end the war with the humans, Ellen offered to build humanoid models for the Cylons and give them resurrection technology. Her first creation, Cavil, (whom she modelled after the image of her own father, John) became sadistic and believed Ellen favored a later model, Daniel, over him. Cavil poisoned the genetic code of the Daniel model, effectively ending his line, and killed the Final Five Cylons. Upon their resurrection, he blocked access to their original memories and placed them in the twelve colonies to witness firsthand the evils of humanity while thinking themselves to be human. After she is killed for treason against the resistance on New Caprica, Ellen resurrects aboard a Cylon ship, where John Cavil holds her prisoner. However, by downloading into a new body, she regains the memories that Cavil had blocked decades earlier. This newly regained knowledge and wisdom gained over many lifetimes at first seems to alter her personal character to one of greater magnanimity born of a wider view of the universe than that granted by a single lifetime as