The whole golbez arc is directly ripped from ff4 and he was a good guy in the sequel to ff4 but was a puppet to zeromus the entire game and fulfilling zeromus plans. The garleans are a reference to the gestalt/archadian empire from ff6 and 12 down to zenos essentially being just like kefka except zenos didn't become a god. The archadian empire if i remember was controlled by venat or some of the other higher beings which are similar in ff14.