These gigantic, prehistoric Clockwerk are said to predate humanoid Clockwerk, and were not created by the Artificer. Some allege that the Clockwerk themselves are an evolution of Ender physiology, which may be older than all other races in the world, and possibly derived from a material reality beyond the Astral Veil.
The Enders form an elemental hivemind, which slumbers beneath the earth. In the restricted annals of the Polytechnic in Arcanum, Clockwerk scholars explain that the Enders were forced into slumber by the Artificer and his circle to prevent them from "remaking the world" in their own image. The hivemind's unique ability to transmute matter on a global scale does not discriminate between the living and inert, and from the writings preserved by the Polytechnic, it's surmised that the Enders lack a sense of human morality.