Fan Casting Dem Bones in Sort by Tropes

Animate beings constructed from ossific material in their entirety are a very common form of The Undead in video games, but much rarer in other media, to the point where, as an object of fear, they have become slightly camp. They're cousins to the Zombie in spirit, but remain explicitly separated in the public consciousness by the lack of flesh and other juicy bits. A likely explanation for their ability to see and hear, not to mention move without any muscles, and indeed their status as Perpetual Motion Monsters is a necromancer used Functional Magic to raise and operate them. Thus, these creatures are firmly inhabitants of Fantasy works. You might know them as skeletons.