The Clockmaker was an entity of mysterious origin, kept as a subject of research at the Sylveste Institute of Artificial Mentation (SIAM) around Yellowstone during the Belle Epoque.

Apparently an artificial intelligence, the Clockmaker was housed within a body composed of an unknown metallic substance resembling liquid chrome, which was capable of fluidly changing shape at will but generally resembled a human form. It could absorb matter into its body and reconfigure it with incredible speed and dexterity; while under study at SIAM, it used this ability primarily to manufacture a series of intricate clocks, earning it its name.

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