Who are the Cylons?
Cylon (reimagining)
Cylons were initially unable to produce children with each other. They turned their attention to mating with humans. Their crossbreeding experiments in facilities called "farms" are unsuccessful. They theorize that love is necessary for them to procreate, because "God is love" in their theology. This leads to a successful experiment in which an Eight and a human, Karl Agathon, fall in love and produce a daughter named Hera.