Jedi Master Arca Jeth was selected as Watchman, and assigned his Padawans Ulic Qel-Droma, Cay Qel-Droma, and Tott Doneeta to the planet in a test-capacity. The Republic asked the Jedi to watch over the world.
In 4,002 BBY, Onderon joined the Galactic Republic.
Novar was appointed Minister of State in 4,013 BBY. Ommin was crowned King in the year 4,018 BBY, taking Amanoa as Queen. The Beast Wars lasted from 4,350 BBY to 4,000 BBY, with the final battles serving as the opening salvos of the Great Sith War. Relations between the two groups were hostile, and they remained at war with each other for many years. These outcasts soon learned to defend themselves, and eventually formed a second civilization, the Beast Riders.
The Naddists sent Iziz's criminal element (opponents of the Naddists) out into the wilderness without any protection from the animals.
Naddist tyrants included Warb Null and King Ommin. In 4,400 BBY, Freedon Nadd conquered the planet and established a dark side theocracy.