Type I (Breathable)
- "Our intelligence on Atoa is limited. We must be prepared for a war."
- ―Darth Vader
A major campaign for the Imperials took place at the planet shortly after the creation of the Galactic Empire. The planet was attacked by Darth Vader and the 501st Legion who had been led to believe that they were responsible for the disappearance of Admiral Garoche Tarkin. In actuality, he had defected to Lady Saro, High Priestess of Atoa, one of the rulers of the system.
- Star Wars: Darth Vader and the Lost Command 1 (First appearance)
- Star Wars: Darth Vader and the Lost Command 2