After their master, Ra-den, fell silent and their bodies were turned into flesh and blood by the Curse of Flesh, the mogu became frustrated. After a thousand years without orders from their master, the mogu began to argue amongst themselves, soon falling apart into warrior clans. However, one king was more ambitious than the others.
Known as Lei Shen, this young warlord ascended to the top of the Thundering Mountain and stole the power of the mogu's titanic master. When Lei Shen returned from the mountain, he dubbed himself the "Thunder King" and began uniting the mogu under a single banner. Armed with the power of storms, the Thunder King gathered together his followers and began the systematic conquest of the other mogu warlords, founding the first great mogu empire and putting an end to the Age of a Hundred Kings.
- The next known age is the Age of Chaos, though there is a large gap in between, and these ages are recognized by different cultures.
- Monara, the "Last Queen" of the mogu, was presumably slain by Lei Shen towards the end of the Age of a Hundred Kings.