Cylons

Cylons refer to several different races or classifications of beings featured in the Battlestar Galactica television franchise. In each instance, the Cylons are presented as the primary antagonists of their respective programs. According to series creator Glen A. Larson, the original Cylons were actually a sentient reptilian race that existed several thousand years (yahrens) ago. They created robotic servitors dubbed Cylon Centurions to serve as support staff and military, but it is believed that the Centurions turned against their makers, rendering them extinct.

The term Cylon had since been re-applied to the robots themselves. Having developed a means to operate outside of their initial programming, they mass-produced themselves and forged the Cylon Empire. The leader of the Cylon Empire was an L1 series Cylon dubbed the Imperious Leader. The Imperious Leader wore a robe and had an outer shell and head covering designed to resemble the original organic Cylons. The Imperious Leader occupies a central command chamber aboard a Cylon Basetar and coordinates attack strategies with it's command staff, usually a different variation of an L1 series robot.

Cylon Cenurions are drone warriors who serve as the military arm of the Cylon Empire. They are distinguished by their chrome-plated outer casings, their hollow voices and an occular sensor scanner that glows red and moves back and forth across their eyeline. The most commonly heard phrase amongst Centurions is an affirmation of their programming, "By your command".