KRONOS-327 was a renegade Holowan Mechanicals masculine-programmed IG-86 sentinel droid belonging to Ziro the Hutt, a Vigo of the underworld crime syndicate Black Sun. Ziro allowed KRONOS to go without a memory wipe for long periods of time, which granted the assassin droid his own personality and the ability to gain experience from his missions. When one assignment—the elimination of one of Ziro's rival Vigos on the twelfth moon of Yout—ended in failure in 22 BBY, KRONOS returned to Ziro's Palace on the Republic capital world of Coruscant. After the droid gave his report, Ziro expressed his disappointment and ordered that the droid be scrapped. KRONOS was subsequently taken away by a pair of fellow IG-86 droids.