Like the subject. what are they. I'm not asking about their allegiance. I have yet to find any information about their physiology. Are they robots like the vex? Are they mutants? Aliens? What?
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Edited by Prophet 12: 3/22/2015 4:35:01 PMAliens. They survive off a substance called ether, which the servitors produce. The have 4 arms. That's basically the extent of our current knowledge on the Fallen.