Before the Exalts we know, Autochthon crafted prototypes to attend to his people while he slumbered....and we know nothing about them so we asked Neall Raemonn Price to talk pantless assassins, hand cannons, and turning into a small city.
Alchemical Books:
Time of Tumult - Book detailing the Locust Crusade
Exalted: The Autochthonians - 1e Alchemical book
Manual of Exalted Power: Alchemicals - 2e Alchemicals book
Compass of Celestial Directions, vol VI - Autochthonia - Setting book for the interior of the machine god