Instigated by their allies, the Grysk warlike species, and orchestrated by Yiv, the Nikardun Destiny attempted to conquer areas of the Unknown Regions, successfully subjugating or otherwise making allies of several species in the process. Eventually however this draw the attention of the Chiss Ascendancy, who captured Yiv near the Vak homeworld of Primea, becoming a prisoner of the Chiss.
Following his disappearance, no successor to Yiv was able to consolidate power and repair the damage Chiss had done, who went on to eliminate any remaining Nikardun military presence several months after, having cleared out most of the Nikardun bases listed on General Yiv's questis data-link reader.
At the time of the Clone Wars, the Nikardun Destiny had began to invade a region of the Unknown Regions. Orchestrated by General Yiv, led the Nikardun conquests in an attempt to conquer various societies of the Chaos, successfully subjugating or otherwise making allies of several species. These campaigns eventually draw the attention of Senior Captain Mitth'raw'nuruodo "Thrawn" of the Chiss Ascendancy.
After several encounters between the Destiny and Chiss Ascendancy, the Chiss were able to defeat the Nikardun Destiny in a final battle near the Vak homeworld of Primea with the aid of the Vak Combine, and captured Yiv, who became a prisoner of the Chiss Ascendancy.
The Nikardun conquests fell apart following the general's disappearance, with no successor to Yiv was able to consolidate power or repair the damage the Chiss Ascendancy had done to their empire and forced the Nikardun Destiny to scatter.
During Yiv's interrogation, he revealed the locations of the scattered remnants of his forces. The Ascendancy's ruling Chiss Syndicure, by then fully convinced of the danger posed by the Nikardun Destiny, allowed the Chiss Defense Force to bend their non-aggression policy to hunt the remnants down.
In one of these operations, the Chiss Ascendancy were able to successfully liberated Nettehi from the grip of the Nikardun after a plea for assistance from the Prince Militaire and his his people. Chiss Ascendancy had apparent threats against the Paataatus to "demonstrate the full military might of the Chiss Ascendancy", which were actually promises to act against the Nikardun occupying the system.
The Destiny held a formidable fleet, using blockade frigates, destroyers, patrol craft, and various gunboats. The Deathless acted as the mobile capital, and was a Battle Dreadnought class. Nikardun soldiers acted as security guards for the Destiny.
The Nikardun Destiny was an hegemony in the Unknown Regions, where it had a large hegemonic influence and control over several subjugated governments. Examples of such under it yoke, were the Lioaoin Regime, the Urchiv-ki Tower Dimension, and the Paataatus Hiveborn.
- Star Wars: Timelines