Cylon History

Cylons eventually evolved or created new models of Cylons known as Humano-Cylons. The evolution is most likely a result of self teaching capabilities incorporated into the early Cylons. With the exception of a glowing red spine, it is quite difficult to determine the difference between a Humano-Cylon and a "pure" human. (TPTB have expressed that the glowing red spine was, in retrospect, a continuity error that was visually appealing at the time.) Another significant difference is the presence of Silica Pathways which are vulnerable to radiation. Dr. Gaius Baltar was able to successfully build a Cylon Detector based on this principle with the help of Number Six; however, he has determined it is simpler for everyone "if all the results are green." An interesting new step in the evolution came about with the conception of a Cylon-human hybrid, the child of Sharon Valerii and Lt. Karl Agathon.