The Penrai Commission's leader Varad Duas is Mulk's successor, whose prototype ninja robots crushed the previous revolution led by Banglar, ushering in a
Full-Circle Revolution with Mulk in charge. The Guardians are perfected versions of those prototype ninja robots, even capable of using magic-like abilities.
Both are games made by Joymasher. Furthermore, Sunseeker's plan was to have machines like him rule over humans, and
Blazing Chrome is a
Robot War where robots have attacked and wiped out much of humanity.