Hera Agathon

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Hera is the first sucessful Human/Cylon Hybrid, the culmination of the Cylons' experients to achieve viable procreation. Her parents are the human Lt. Karl "Helo" Agathon of battlestar Galactica and a copy of the Sharon "Boomer" Valerii-model of Cylon who took part in the Cylon experiment to set up Helo into falling in love with and impregnating her. This experiment was conducted because the forced cross-breeding experiments in the Cylon Farms met with complete failure, and the Cylons theorized that the key element to procreation that they were missing was love (which is very important to them, because the Cylons believe that "God is love"). As a result, Hera is currently the only succesful progeny of a humanoid Cylon, and therefore literally considered a "miracle of God" by the Cylons. Hera was concieved 24 days after the Cylon attack on Caprica, in a night of passion after Helo "rescued" Caprica-Sharon from what was really a Cylon trick. Caprica-Sharon was ordered to convince Helo to stay in "hiding" on Caprica, but instead she truly fell in love with Helo and then began helping him to escape the Cylons; Caprica-Sharon switched over the to human's side. After Starbuck arrived on Caprica to retrieve the Arrow of Apollo, she left in captured Heavy Raider along with Helo, and Caprica-Sharon went with them back to Galactica, much to the consternation of many in the Fleet. Caprica-Sharon was held in Galactica's brig for the next few months, as her pregnancy continued to advance.

Source: TV Guide, February 20th, 2006