Broken Sky: The Sad Machine
The Cogs are less of an organized faction and more of an entire grouping of humanity. Cogs are the colloquial term for anyone who works to advance the God-Machine’s interests, human or otherwise.
The curious things about Cogs is that they often have no idea they are Cogs. Such is the power of the God-Machine in his best effort, that he can turn someone into his devoted servant without their even realizing it.