Oa is a planet that lies at the center of the universe. Since its inception, Oa has been the planetary citadel of the Guardians of the Universe and the headquarters of the Green Lantern Corps.
On the parallel-universe of Earth-One, Oa is a planet that the Guardians of the Universe occupied after leaving the planet of their birth, Maltus. These evolved Maltusians named themselves Oans.
Oa appears as a desert-like, lifeless planet. The main feature is the Guardian's city.
The Planet Oa never appeared on the SuperFriends Cartoon or in the SuperFriends Comicbook.
It did appear in the Filmation Series, The Superman/Aquaman Hour of Adventure (1967 – 1968) as part of the Aquaman Segement, in the Green Lantern Episodes:
- The planet Oa first appears in Green Lantern, #1 (August 1960).
- The planet Oa was created by John Broome and Gil Kane.
- ↑ Go to DC Database for more on Green Lantern, #1 (August, 1960).