This is how i think the fnaf endo-skeleton would actually work in real life, by using LEDs, circuits, wires, springlocks, magnets, battery, speaker, and pistons. LEDs would be for the eyes, circuits are for wires, wires give it energy, springlocks to go in the suit, magnets for the joints, battery to save up potential energy, speaker for the voice, and pistons for the arms, neck, legs, and jaw.