From ‘Thoughts on the Primals – Malignant Divinity’ by Archon Niniri Niri
One of the less threatening primals of Eorzea on the surface, the Good King of the moogles is nevertheless a dangerous, aether-devouring creature in its own right. Moggle Mog XII caused a storm in his initial summoning by bucking the trend upheld in scholarly records of the Sixth and Seventh Astral Eras by being the first documented primal to be summoned without originating as a divine figure. The Good King was summoned by the mogglesguard, an order of martially capable moogles tasked with defending the moogles of the Black Shroud, through deceptions woven by the vile Ascians leading them to believe that the primal they summoned would be the authentic king of old, to protect them from the upheaval experienced by Eorzea in the wake of the Seventh Umbral Calamity. They chose to revive him in an area known as the Thornmarch, a clearing in the wood fringed with thick thorned vines, perhaps giving the area its name. It acted as the sanctuary of the mogglesguard, and also of the Good King himself before his summoning, though in a purely ceremonial aspect of course, and was sealed by powerful magics. The military nature of the mogglesguard is likely what earned it the ‘-march’ aspect of its name.
Moogle myth holds that long, long ago, prior even to the First Umbral Calamity, the moogles dwelled in the heavenly abodes of the gods and served them loyally. They continued doing so until the gods broke out in civil war over a spilled cup of wine, leading the king of the moogles at the time, Good King Moggle Mog XII, to guide his people to the surface world far below. A distance too massive for the wings of the moogles to cover, and so the ruler lowered an immensely long rope down to the surface, enabling his subjects to flee while he remained. Investigations into the area known as the Sea of Clouds in the modern day has revealed something curious however, likely confirming these myths to be instead merely distorted fact. A tribe of moogles dwelled on the islands in this lofty area, who carried on the tradition of naming a leader (albeit a chieftain, not a king) and perhaps most shocking of all, traced the lineage of their chieftains back to a figure known as Chieftain Moggle. One might suppose then that the event since known amongst the moogles as the war of the gods was the First Umbral Calamity, a phenomenon also conflated with the gods amongst the races of Eorzea, and that it caused some of the moogles to flee the Sea of Clouds.
Real World Basis – Although there is very little to say for the real world basis of Moggle Mog, we can briefly mention that god-kings and real figures deified or otherwise mythologized after death are a very real phenomenon, including a number of Roman and Chinese emperors, the pharaohs of Egypt and even the real world equivalent of Gilgamesh himself.