Heavy battle droid

"The Separatists are using the planet's vast doonium supplies to create battle droids with enhanced armor."

- Republic intelligence report

During the Separatists' occupation of Atraken, they manufactured armor-enhanced battle droids using the planet's rich doonium supplies, which was used to make starships. Droids of various models, they were virtually the same in appearance, but were heavier due to the stronger metal used to construct them. The droids preformed well during the Grand Army of the Republic in the battle on Atraken, but were not produced by the Confederacy of Independent Systems anymore after the loss at the battle as the Separatist Assembly deemed them to expensive for their worth.