Oa

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For other uses of Oa and oa, see OA (disambiguation). For the Scottish locality of this name,
see The Oa.

Oa

Oa, with the Guardians of the Universe and the Green Lantern Corps.

Art by Alex Ross.

Notable characters Guardians of the Universe

Publisher DC Comics

Oa is a fictional planet that lies at the center of the DC Comics universe. Since its inception, Oa
has been the planetary citadel of the Guardians of the Universe and the headquarters of
the Green Lantern Corps. It first appeared in Green Lantern vol 2 #1, when the Guardians
summoned Hal Jordan's "energy duplicate" so they could hear of his origin.

Contents
[hide]

1History

o 1.1Legion of Super-Heroes

2Green Lanterns Corps Headquarters

3Book of Oa

4In other media

5References

6External links

History[edit]
One of the oldest planets in the universe, Oa serves as the home and headquarters for a race of
blue-skinned powerful humanoids who have dubbed themselves the Guardians of the Universe.
The Guardians administer the Green Lantern Corps, a group of powerful universal police officers
equipped by the Guardians with green-colored power rings along with green lanterns with which
to charge the rings. According to the story "Heart of a Star" in the Sandman: Endless
Nights graphic novel, Oa's star is called Sto-Oa (the Light of Oa) by the children of the planet's
inhabitants. Its location has been firmly established by numerous references in Green
Lantern comics over the years. It was formerly the center of the universe until the events of
Infinite Crisis.
Oa's history is not clear; according to some stories, the Guardians originated on a planet
called Maltus. These evolved Maltusians later moved to Oa and named themselves Oans. Oa
became a convenient base of operations. Other stories had the Oans living there from the
beginning.
Oa appears primarily as a desert-like, lifeless planet except for the Guardians' city which
contains the Corp Central Battery and various halls, living quarters, containment cells and
training centers for the Green Lantern Corps. It serves basically as a planet-sized all-in-one
police station, training grounds and prison.
During a period where the planet had been abandoned and the Central Battery destroyed, Oa
spent some time as a patchwork Mosaic of cities from other planets similar to Battleworld. This
transformation was due to a rogue Guardian driven insane by solitude. When the Guardians
returned to Oa, Mosaic was kept as an experiment in inter-galactic cooperative living. [1][2]
Green Lantern Corps member Hal Jordan, the Green Lantern of sector 2814 (which includes
Earth), under the influence of the evil entity Parallax, kills all but one of the Guardians and most
of the Corps before draining Oa's Central Power Battery of its energy.[3] During the final Zero
Hour: Crisis in Time battle with Hal Jordan, Kyle Rayner destroys the planet in an attempt to
defeat Hal.[4]
In the crossover Green Lantern VS the Silver Surfer, the Marvel Universe villain Thanos attempts
to use the rift created by Oa's destruction to unmake the multiverse, after tricking Kyle into
powering his equipment with his ring, but Thanos is confronted by Parallax and their powers are
drained by Kyle and the Surfer, apparently destroying the rift. During the Circle of Fire event,
what remains of the planet served as a base of operations for the villain Oblivion.
The planet is reformed sometime later by Jordan's old friend and associate Tom "Pie-Face"
Kalmaku in the graphic novel Legacy: The Last Will and Testament of Hal Jordan. The Central
Power Battery is later recharged and the Guardians resurrected shortly thereafter by Kyle Rayner
after he spends some time as the near-omnipotent "Ion", Kyle sacrificing his power to restore the
Guardians rather than risk becoming as dangerous as Hal-as-Parallax.
After attacks by Superboy-Prime and the Spider Guild, the Guardians fortify Oa by creating a
planetwide armor and defensive system to prevent attacks. The full capability of the new systems
is still unknown. They were not, however, enough to prevent an assault by the Sinestro Corps,
which resulted in the deaths of many Green Lanterns. Afterward, the Corps doubled its defenses.
However, a rogue Guardian, Scar, weakened its defenses for an attack from the Black Lantern
Corps.
After Sinestro killed the Guardians for their "Third Army" plot and their part in Korugar's
destruction by the First Lantern Volthoom- although he spared and exiled both Ganthet and
Sayd- Hal Jordan became the new leader of the Green Lantern Corps. Shortly after this, the
planet was attacked and destroyed by Relic.[5]
The Green Lanterns' new base of operations following the destruction of Oa became Mogo.
Legion of Super-Heroes[edit]
It is revealed in Final Crisis: Legion of 3 Worlds that Sodam Yat is the last Guardian of the
Universe in the 31st century, while Rond Vidar is the last remaining Green Lantern until he is
killed by Superboy-Prime's Legion of Super-Villains. Oa lies mostly in ruins, the power battery
cracked, and the rings of the Corps lie in a pile, unable to locate new bearers due to the apparent
death of Mogo. Statues of legendary Green Lantern Corps members, including Hal Jordan, Guy
Gardner, John Stewart, Kyle Rayner, Arisia, and Ch'p, line the hall where the Guardians formerly
met.
Green Lanterns Corps Headquarters[edit]
Dining Hall: The dining hall can accommodate any Green Lantern's nutritional needs.
The executive chef, Greet, specializes in replicating dishes from across the universe. He,
unfortunately, has trouble replicating the vast number of foods from Earth.

The Foundry: Forge of the Green Lantern rings and the Green Lantern battery. It is
underground about two miles from the Central Power Battery and is guarded by an alien
creature.

Hall of Great Service: Housing the massive Book of Oa the Corps' lawbook and bible
the Hall of Great Service is a library of the stories and deeds of the finest Green Lanterns
of all time. Like his father before him, Tomar-Tu recently took the position of archivist
superior, filing every tale as it comes in.

Hazard Simulation Facility: All rookie Green Lanterns endure a series of tests to
determine their viability in the field. The hazard simulation facility allows for safe, non-lethal
training scenarios to be enacted.

Meeting Hall: Lanterns receive their briefings and assignments in the central meeting
hall.

Memorial Hall: A memorial erected to Green Lanterns who lost their lives in the line of
duty. A Green Lantern named Morro and his pet dratures are its cryptkeepers.

New Warriors: A new restaurant owned by Guy Gardner, serving Earth's American fast
foods, dinners, and both non-alcoholic and alcoholic beverages.

The Sciencells: The sciencells were constructed to contain the most ruthless criminals
in the universe. They currently hold such prisoners as Lyssa Drak, Evil Star, Igneous
Man, Grayven, and Alexander Nero. Superboy-Prime was the only inmate who wasn't
imprisoned in a sciencell. The Guardians and the Green Lantern Corps sent him to a
quantum containment field surrounded by a red Sun-Eater and guarded by fifty Green
Lanterns. The Green Lantern Voz acts as warden of the sciencells. No inmate has ever been
rehabilitated successfully.

Sector Houses: These safe houses allow Lanterns to hold criminals as they await escort
back to the Oan sciencells. Limited recreational facilities are available to accommodate
Green Lanterns in their travels.

Book of Oa[edit]
After Thomas Kalmaku used Jordan's ring to rebuild Oa, Kyle Rayner used his power as Ion to
resurrect the Guardians. The book of Oa is now restored.
The Forbidden Chapter of the Book tells the prophecy of the Blackest Night, the final destruction
of the Green Lantern Corps at the hands of their greatest enemies as it was told to Abin Sur by
the demons of Ysmault.
Upon recruitment, a Green Lantern is expected to uphold certain principles of his/her/its duty.
These principles include:

1. The protection of life and liberty within the assigned sector.

2. Following the orders of the Guardians without question.

 3. Noninterference with a planet's culture, political structure, or its population's collective
will.

4. Acting within local laws and obeying the local authority within reason (presumably, the
Guardians' orders can overrule this when necessary).

5. Taking no action against anyone or anything until they are proven to be a threat against
life and liberty.

6. Avoiding the use of equipment, resources or authority of the Corps for personal gain.

7. Showing respect for and cooperating with other members of the Corps and the
Guardians.

8. Showing respect for life which includes restraint of force unless there is no reasonable
alternative.

9. Giving top priority to the greatest danger in the assigned sector.

10.Upholding the honor of the Corps.

The book of Oa has been designated off-limits after being rewritten by the Guardians of the
Universe to include ten new laws. Only the first four have been revealed:

1. Lethal force is authorized against the Sinestro Corps.[6]

2. Lethal force is authorized against all enemies of the Green Lantern Corps. [7]

3. Physical relationships and love between Green Lanterns is forbidden within the Corps.
[8]
This law is later repealed and relationships between Green Lanterns are
allowed[9] following the Blackest Night event.

4. The Vega System is no longer outside of Green Lantern Corps' jurisdiction.[10]

When the new laws are written, the book is revealed to be written in Interlac, which is the galactic
universal language used by the 30th and 31st Century United Planets and Legion of Super-
Heroes.[10]
To enforce these principles, the Guardians closely monitor the activities of the Lanterns. If they
feel a violation of Corps regulations occurred, they will summon the offender to Oa and hold a
trial in which the charges are read and the Lantern is allowed to explain his/her/its actions. If the
Guardians are not satisfied by the explanation, they have a number of disciplinary options which
include:

Probation

Personal supervision by the Guardians on Oa

Temporary exile from the Lantern's homeworld

Ritual Trial of Endurance (a Lantern must attempt a dangerous passage through the Anti-
Matter Universe)

Expulsion from the Corps

 Prime Duty (when Superboy-Prime was an Oan prisoner, guard duty was used for
punishment)

In other media[edit]
Oa appears in the animated series Justice League. Here it appears as a rocky planet
with only a single structure where the Guardians Citadel, the Central Power Battery, and
Green Lantern Corps are housed.

Oa is one of the main locations seen in Green Lantern: The Animated Series. Here it is
well settled, with massive sky scrapers located every where on the planet. From space the
planet is seen to have two rings encircling it, one in the north, and one in the south. The
massive cities below give a circular appearance on the surface from space. Altogether it
gives the planet an appearance of a Green Lantern Battery.

Oa as it appears in Green Lantern the 2011 Movie

Oa appears in the 2011 live-action movie Green Lantern. Here the planet has several
points of green light shooting from the surface into space. The planet has large cities and
skyscrapers covering its surface. The Guardians Citadel is one of the tallest structures, with
the Guardians chamber atop it. The Central Power Battery is underground in the planet's
center, and from there it sends out the points of light seen from space. The Green Lantern
Corps has a large meeting chamber near the Central P