Battle of Hypori
during the Separatists' secret military build-up of droid forces, most of the manufacture of battle droids was done on Geonosis. The foundries of Hypori augmented those of Geonosis after the onset of the Clone Wars, until the planet was discovered nearly three years later by Jedi Master Daakman Barrek and his Padawan, Sha'a Gi. A task force was dispatched to Hypori by the Jedi Council and the Army of the Republic, but it was smashed by General Grievous before it could reach the surface.