The Heroes of Heaven's Height
Automata or automatons are/were mechanized constructs, almost exclusively constructed during the Third Age. Their construction was a point of pride for the Twilight caste, who designed a panoply of automata with varying aesthetic and functional values, from bodyguards, to vehicles, to songbirds and even pleasure-servants.
Not many automata survived to the Fifth Age, and the few that do exist are exceedingly valuable. Even the crude clockwork dogs of the early Shogunate can fetch an enormous sum from those who possess the requisite wealth.