Heroes 6 - Discussion

Kunyack led the rebellion that brought freedom to the orcs in the 5th installment, i.e., 400 years later. The first rebellion, however, failed. After a series of brutal battles, the orcs were defeated. The survivors scattered in all directions, including to the southern deserts, the northeastern steppes, and the eastern Border Islands. The orcs who ended up on the islands may have encountered nagas there. So, the first leader of the "failed rebellion" could very well have been a descendant of the royal bloodline.

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Orcish Uprisings
The orcs revolt in the Seven Cities and in the Falcon Empire. Despising their masters and the Dragon Gods, they declare themselves free. In the Falcon Empire, troops rise up against the orcs to suppress the rebellions and force the orcs to worship the elemental dragons once more. After a series of brutal battles, the orcs are defeated. The survivors scatter in all directions, including to the southern deserts, the northeastern steppes, and the eastern Border Islands. A terrible storm sinks the Falcon Empire's fleet, which was following the fugitives to the islands. The Emperor takes this as a sign from the Dragon Gods, and the persecution of the orcs ceases.

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The Second Eclipse: The Coming of the Demon King
A total lunar eclipse. This time, the Blind Brothers managed to warn of it, and the Alliance, with the support of the Dragon Knights, reacted immediately. Only a small group of demons managed to penetrate the world. The names of the Demon Lords, the first children of Urgash, the Dragon of Chaos, are no longer spoken. Instead, Ka-Belet, the first and only Demon King, appears.