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Real Identity: Not Applicable
Appearances (Comics): Oa Snap, Space Walk With Me, and Planet of the Bots
Powers: Not Applicable
Voiced By: Not Applicable

Oa is the planet headquarters of the Green Lantern Corps and is located light years from Earth. Hal Jordan left Super Hero High School to finish his training on Oa. About two weeks into her enrollment at Super Hero High, Jessica Cruz was due for her official induction ceremony as the Green Lantern of Space Sector 2814. Principal Waller decided to send Supergirl and Big Barda with Cruz since they had the most experience in space travel. Star Sapphire was added to help Cruz prepare for the ceremony. They departed for Oa in Supergirl's Rocket Ship. After Star Sapphire and Green Lantern cleared an asteroid belt, Supergirl and Barda landed the rocket ship in Oa's Welcome Center but it was deserted. Supergirl was the first to hear a noise and saw a lot of Kryptonian Terraformer Robots. The robots perceived Beast Boy, Big Barda, Green Lantern, and Star Sapphire as hostile aliens then attacked them. When they came to, they met two Kryptonians named General Zod and Non while Supergiril was reunited with Faora.

Once Supergirl cleared up the confusion they were her captors, Zod explained the Green Lantern Corps let him settle on Oa and use it to establish New Krypton. Non escorted Beast Boy, Big Barda, Star Sapphire, and Green Lantern to Visitors' Quarters while Zod and Faora stayed with Supergirl. They were launched into space.