Oa is the home base of the Green Lantern Corps and at the center of the Universe.
Series
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Characters
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Green Lanterns: Alan Scott/Green Lantern • Hal Jordan/Green Lantern • Guy Gardner/Green Lantern • Jessica Cruz/Green Lantern • John Stewart/Green Lantern • Kyle Rayner/Green Lantern • Simon Baz/Green Lantern • Teen Lantern • Jennie-Lynn Hayden/Jade/Green Lantern • Kilowog/Green Lantern • Abin Sur
Supporting Characters: Carol Ferris • Oliver Queen/Green Arrow • Guardians of the Universe • Todd Rice/Obsidian • Donna Troy/Troia/Wonder Girl I • Justice League: (Clark Kent/Superman, Batman, Wonder Woman, The Flash (Barry Allen), Aquaman, Martian Manhunter, Cyborg, Wally West/The Flash) • Justice Society of America (Al Pratt/The Atom, Doctor Fate/Kent Nelson, Jay Garrick/The Flash, Carter Hall/Hawkman, Rex Tyler/Hourman, Wesley Dodds/Sandman, Jim Corrigan/Spectre}
Villains: Sinestro • Atrocitus • Alex Luthor, Nekron, Monitor, Eclipso, Psimon, Maxwell Lord, Doctor Polaris, Hellgrammite, Hector Hammond, Cyborg Superman, Dex-Starr
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Locations
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Biot • Coast City • Ferris Aircraft • Korugar • Maltus • Nok • Oa • Odym • Okaara • Qward • Ryut • Sector 2814 • Ungara • Vega • Warriors Bar • Xudar • Ysmault • Zamaron
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Items
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Central Power Battery • Emotional Electromagnetic Spectrum • Green Lantern Power Battery • Green Lantern Ring • Starheart
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