During the Clone Wars, it was the location of a secret Separatist weapons factory. Jedi Master Saesee Tiin this world to steal a CIS-Advanced starfighter being developed there. He was aided by one of the planet's inhabitants, the thief Na-Jia.
At the end of the war, Diado was still under Separatist control. The planet was eventually attacked in 19 BBY by the 12th Imperial Sector Army.
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