Though they resemble ambulatory humanoid skeletons, skeledroids are actually a combination of an ancient Eldan technology and decomposing remains left behind on the battlefields of Nexus. They have little in the way of individual thought or motivation, but will lash out at any living creatures they detect.
Skeledroids are a result of eldan nanotechnology interacting with the bones of the dead. Specifically, Eldan augmentor constructs are able to infuse any organic material, living or dead, with genetically optimized omni-plasm (or "GOOP") that reanimates the tissue and allows it to function in a semi-autonomous state. Like any augmented creature, skeledroids are extremely dangerous and should be approached with caution at all times.