Blackhole was a codename employed within Palpatine's Galactic Empire. Lord Cronal, previously a Prophet of the Dark Side, was its initial user upon becoming Director of Imperial Intelligence. After Cronal's death during the Battle of Mindor, Grand Vizier Sate Pestage took over the codename, utilizing this guise as a screen while aiding Palpatine's resurgence in a clone form and the founding of his Dark Empire.