>>534711463
Cat-Lon and his clique of little clankers after pushing back the First Empire. Skeletons were ultimately designed to serve Mankind, and in order to redeem himself and his fellows, he had made it so that the Second Empire would be a human safe-haven.
Of course, that pretty much went to shit due to a variety of reasons. In their search to make Man more resilient to the Moon's hostile enviroment, they made some absolutely heinous experiments on a bunch of them (Blood Spiders/Cannibals), tried to make a caste that would be absolutely subservient to them (Hivers) and a police force (Sheks) that would eventually degrade into the niggiest of niggerdoms ever conceived that's practically locked in a forever war with the Holy Nation to its north.
Also, Okran and Narko both were Second Empire officials. Okran held sympathy for Mankind, whereas Narko polished skeledongs 24/7.
Limbustomy of Ruina.