History
The Book of Oa is a massive book held in the Citadel of Oa. Created long ago, the Book contains the history of the Guardians of the Universe and the Green Lantern Corps. One member of the Green Lantern Corps is selected by the Guardians as Keeper of the Book of Oa, a highly honored position.
After Thomas Kalmaku used Hal Jordan's ring to rebuild Oa, Kyle Rayner used his power as Ion to ressurect the Guardian. 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.(Revision allows lethal force to be used against the Sinestro Corps)
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. Refusing to use the 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.

Following the escalation of the war between the Green Lantern Corps and the Sinestro Corps, the Guardians have rewritten the Book of Oa changing the ten previous laws into new laws.

1. Lethal Force is authorized to be used against the Sinestro Corps.
2. Lethal Force is authorized against all enemies of the Green Lantern Corps.
3. Love and physical relationships between members of the Green Lantern Corps is forbidden. (Repealed)
4. The Vega System is no longer Outside the Green Lantern Corps' jurisdiction.
5. The Green Lantern Corps no longer takes prisoners.
6. If the Guardians are unable to discharge their sacred duties, command of the Green Lantern Corps falls to Clarrisi, followed by the Illustres.

The remaining four laws have yet to be revealed.

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.

G'nort (pronunciation: "nort") Esplanade G'neesmacher is a fictional character, a DC Comics superhero created by Keith Giffen and J. M. DeMatteis during their Justice League period.
G'nort was a member of the Green Lantern Corps and later a Darkstar. He resembles a humanoid dog and is thoroughly incompetent and generally disliked by other heroes; in fact, he is usually portrayed as being a loser and used as comic relief. He was a member of the Justice League Antarctica. Despite his comedic appearance, he has become somewhat of a cult favorite among comic book readers.

Fictional character biography 
Hal Jordan explains that G'nort became a Green Lantern due to the influence of his relative who was a famous member of the Lantern Corps. Despite his obviously limited intelligence (not intelligent enough to read a map) and profoundly lacking tactical judgment, the character is consistently depicted as brave, loyal, and honorable. This fact is overlooked by most heroes, although Superman has pointed it out on occasion.
Early in his career, G'nort becomes inadvertently mixed up with the League's battle against the Manhunters. Recognizing G'Nort's general incompetence, the Corps had given him an uninhabited sector of space to patrol. The fact that the region was uninhabited also suited the needs of the Manhunters, who set up their home planet in G'Nort's sector. G'Nort joined Hal Jordan, Superman, and other Justice League members in an assault on the home world, although G'Nort's main contribution was getting stuck in the planet's ventilation system.

Working with the League
G'nort's arch enemy, the Scarlet Skier (a take-off of Marvel's Silver Surfer), is described as being the only felon G'nort ever managed to apprehend in his entire career. Also an idiot, the Skier was mistaken for a pan handling homeless person when traveling in the subway.
G'nort goes on a mission to rescue Mister Miracle from the interstellar trader Manga Khan. Traveling in a spaceship, G'nort works with Big Barda, Martian Manhunter, and Dmitri of the Rocket Reds. They chase down Khan and survive an assassination attempt by his hired killer Lobo.
Both G'nort and the Skier were founding members of Justice League Antarctica, created by Maxwell Lord for the purpose of keeping both them and the reformed Injustice League out of his way.

The League, including G'nort, find their Antarctic headquarters overwhelmed by killer penguins. Their enemies are ultimately destroyed, but not before the facility itself gets demolished. G'Nort keeps himself and his new-found allies alive via his power-ring until help arrives.
G'nort assists the League, this time consisting of Manhunter, Crimson Fox and Ice, when Mr. Nebula, the Skier's old boss, turns his dangerous, cosmic-powered attention to Earth.
G'nort sees himself as a "Green-Lantern-at-large", not bound to a single space sector. His most successful mission (apart from capturing the Skier) has been when a gang of interstellar bank-robbing humanoid cats surrender as soon as he appears.

Qward battle 
Eventually it is discovered that both G'nort and his uncle G'newman were actually given their rings by the Poglachians, who posed as the Guardians of the Universe while the real Guardians were with the Zamarons. A race of clowns, the Poglachians gave the rings to beings they thought would use them in amusing ways. They were actually pawns of the Weaponers of Qward, who hoped to discredit the Green Lantern Corps by having the name associated with idiots. G'nort works with Guy Gardner, ending up in Qward itself, though G'nort loses his Qwardian-powered ring. Their confrontations against a Qwardian Sinestro cult goes badly. Faced with the threat of his beloved uncle being killed, G'nort gives up the location of Hal Jordan.

Soon after, powerless but free from a Qwardian cell, G'nort smells the soldier who took his ring and tracks him down. The soldier swiftly overpowers G'nort and makes the mistake of bragging how he would kill and torture Guy. Enraged, G'nort defeats the soldier, gains his ring and saves Guy by destroying the source of his very own power. The two make it back to normal space as explosions devastate the local area. Afterwards, Guy Gardner reluctantly tells the real Guardians that G'nort was the true hero on Qward, which earned G'nort status as a genuine Green Lantern. Around this time G'Nort is kicked out of the League and meets up with a struggling street musician whom he takes to calling 'Sax Girl'. He saves her from a life of homelessness and they have multiple adventures together. They part on friendly terms, with a kiss. He has other adventures on his own, such as battling several supervillians who pretend to terrorize a small town for a cut of tourism dollars.

Post-League
G'nort presumably lost his ring during Emerald Twilight and subsequently (like many former Lanterns) joined the Darkstars. He still wears his Darkstar uniform long after the organization collapses, when he is captured by Manga Khan, who attempts to trade him to Maxwell Lord in exchange for L-Ron. The entire situation goes badly, resulting in the near destruction of Earth. G'Nort is set free after Maxwell Lord and Sue Dibny hold Khan for ransom. L-Ron returns with Khan.
G'nort was seen as the sole member of Super Buddies Antarctica, exactly where Maxwell Lord wants him. For a time, G'Nort lives behind Guy Gardner's New York 'Warriors' bar. He appeared later in the mini-series "Guy Gardner: Collateral Damage", where his homeworld had been destroyed by the Rann-Thanagar War. The character was portrayed more serious in this story, suffering heavily from the loss of his family.
As of Green Lantern: Sinestro Corps Secret Files & Origins #1, G'nort is listed as "Presumed Dead."  When asked whether G'nort would be making an appearance as a member of the Black Lantern Corps during Blackest Night at San Diego Comic Con 2009, Geoff Johns replied that the character was not dead and was still considered missing in action.

Other versions
I Can't Believe It's Not the Justice League
In the alternate dimension visited by the Super Buddies in the I Can't Believe It's Not the Justice League, populated by twisted counterparts of the main universe characters, G'nort is a rampaging flea-infested giant, whose body is used as a battleground.

Justice League Unlimited 
In the Justice League Unlimited comic spin-off G'nort starts his career as a regular Green Lantern Cadet, nephew of the famous G'Newt but lacking any skills and talents. He is brought to Qward by John Stewart along with other Lanterns to stop Sinestro's last plan to destroy Oa by flaring over the planet with antimatter bursts. Despite Boodikka's prejudices against a rookie, G'nort is able to hold his own on combat, and uncover G'Newt himself as Sinestro's partner and accomplice. The Guardians, impressed by his courage, grant him the former sector of the deposed G'Newt to patrol.

Planetary 
In an alternate universe ruled by evil versions of the 'Planetary' heroes, G'Nort's corpse is one of many on display in the Planetary headquarters.

In other media
Television
G'nort appears in the Batman: The Brave and the Bold episode "The Eyes of Despero" voiced by Alexander Polinsky. He, Sinestro, and Guy Gardner work with Batman to stop Despero. His backstory is the same as originally presented in the comics, as Sinestro mentions G'nort's uncle had "pushed" him through Lantern training. Though G'nort is initially presented as somewhat incompetent, he proves vital in helping Batman stop the brainwashed Mogo by draining Mogo's internal Lantern Battery. Despite forgetting the Green Lantern oath necessary to begin the process, he comes through upon consulting the "cheat sheet" written on his arm. After Batman compliments him twice and helps G'nort earn the respect of the Corps, he jumps into his arms to lick him, only to get a reprimand ("No licking."). G'Nort makes a non-speaking cameo in the episode "Revenge of The Reach", wherein he is blasted by the mind-controlled Blue Beetle.

Fatality is a fictional character, a former supervillain in the DC Comics universe. She was created by Ron Marz and first appeared in Green Lantern vol 3 #83 in February 1997.

Publication History
After debuting in a three part storyline in Green Lantern vol 3 #83-85 (February - April 1997), the character returned for many additional appearances. She joined the title team in Green Lantern: New Guardians in issue #1 (September 2011).

Fictional character biography
The eldest child of the planet Xanshi's ruling family, the girl who would one day call herself Fatality was sent off-world to be educated by the Warlords of Okaara. Xanshi is destroyed due to a miscalculation by Green Lantern John Stewart, making Fatality her world's sole survivor. Learning of Xanshi's fate, she leaves Okaara and dedicates herself to becoming the deadliest warrior in all the universe. Remaining ignorant of Stewart's identity, she swears vengeance on all Green Lanterns.
When the Green Lantern Corps is rendered powerless, Fatality views the last Green Lantern, Kyle Rayner, as her ultimate prize. Their conflict takes them from Earth to a desolate planetoid, where during combat she discovers Stewart was to blame for Xanshi's destruction. Fatality seemingly perishes in the battle, though no body (save a severed arm) is recovered.
Fatality later appears on Earth, having acquired a prosthetic arm and a Qwardian yellow power ring. She again fights Kyle Rayner, who convinces her to remove the yellow ring. The Qwardians had booby trapped the ring, causing it to explosively teleport away after being removed. This destroyed Fatality's (remaining) arm.
After being imprisoned on Earth for a while, she was released by the villain Major Force. She has since been seen working as a bounty hunter in the Vega System in the Green Lantern Corps: Recharge mini-series.
She later became a member of the Earth-based Secret Society of Super Villains. While in battle she loses an ear to Vandal Savage's daughter, Scandal.

She was seen among the new Injustice League, with a new Sinestro Corps yellow power ring. Later, she was captured by the Zamarons and experimented upon, and became the Star Sapphire of Sector 1313. Influenced (essentially brainwashed) by the violet light of love, she is now set on forgiving her nemesis, John Stewart, for whom she claims to have romantic feelings. She finds him on Okaara fighting Larfleeze, also known as Agent Orange, and his Orange Lantern Corps, isolating him with crystals and kissing him. She also encourages him to forgive himself as she's absolved herself of her survivor's guilt. Before departing for Zamaron, she tells him that she has forgiven him as well.
Fatality reaches Zamaron just in time to defend the planet against an attack by members of the Sinestro Corps who had come to retrieve their captured female members. Even though she was originally one of them, she had already been converted by the Star Sapphire Corps unlike many of the others.
Fatality has recently become the Star Sapphire representation in the new title Green Lantern: New Guardians, having become a provisional member of a makeshift 'team' consisting of one representative from each of the seven Corps, including Kyle Rayner of the Green Lantern Corps, Arkillo of the Sinestro Corps, Bleez of the Red Lantern Corps, Saint Walker of the Blue Lantern Corps, Larfleeze's Orange Lantern construct Glomulus, and Munk of the Indigo Tribe. Having learned of Larfleeze's role in banishing the Orrery of Archangel Invictus into another dimension, Fatality returns to Zamaron to recharge, where the Zamarons tell her that someone in this universe must have created the opportunity for Invictus to return.

When Fatality learns the Reach has invaded the Blue Lantern homeworld, she immediately rushes to aid the Blue Lanterns. She is then helps John Stewart complete a quest. Following the villainous First Lantern being destroyed and the unemotional Guardians killed off by Sinestro, Fatality has begun a relationship with John in-between on Mogo.

Powers and abilities
Fatality has super human strength, speed, reflexes and reactions, and endurance. She has been trained by the fabled Warlords of Okaara and is an expert in all forms of combat and the use of many weapons. She is one of the best warriors in the universe.
Fatality has many weapons with which she is an expert. Usually she employs an energy staff. Since losing her arms in a battle with Kyle Rayner, Fatality has acquired bionic arms that provide her with enhanced strength. She has a pair of jet boots that allow her to fly and a starship which she uses to traverse the universe in her attempts to destroy the Green Lantern Corps.
When she was a member of the Sinestro Corps, she used a yellow power ring built on Qward. The ring can create objects based on the wielder's thoughts. The power ring is fuelled by fear instead of willpower. Yellow power rings are weak against Blue Lantern rings. When in their presence, Qwardian rings are drained of their energy. Unlike the green power rings were, the yellow ring was never restricted from killing sentient beings.

Now serving as a member of the Star Sapphire Corps, she wears a violet power ring, powered by the emotion of love and built on the planet Zamaron. The capabilities of Star Sapphires appear to be comparable to those of Green Lanterns. They allow the wearer to fly, generate a protective aura (which in the case of Star Sapphires creates distinct feathered and organic shapes), and create violet light constructs. The most notable creation of the violet rings are crystals that encase prisoners from other lantern corps on the Zamaron planet. 

Over time, the rings of the prisoners trapped in stasis within the crystals are infected with violet energy. After spending enough time inside, the prisoner will emerge as a Star Sapphire.
Other unique abilities of the Star Sapphires' rings include the ability to reveal the wearer's greatest love. They're also able to detect when a loving heart is embattled and in need of aid. By connecting the heart of the ring bearer to a true love in danger, the power of the ring can also act as a tether. Star Sapphires have not shown to be particularly vulnerable to the powers of other Corps, however as their powers come from one of the farthest two sides of the spectrum their rings have greater control over their personalities.

Real Name: Harold "Hal" Stark
Current Alias: Iron Lantern
Aliases: Hal, Arno Manning
Affiliation: Judgment League Avengers

Status
Alignment: Good
Identity: Secret Identity
Citizenship: American
Marital Status: Single
Occupation: Founder and CEO of Stark Aircraft
Education: College graduate

Characteristics
Gender: Male
Eyes: Blue
Hair: Brown

Origin
Origin: Green Lantern and Iron Man were combined in a Marvel versus DC crossover
Universe: Amalgam Universe
Created by Kurt Busiek, Paul Smith
First appearance: Iron Lantern #1

History
Hal Stark is a millionaire and the founder of Stark Aircraft. He was working on a stationary flight simulator when the device suddenly took off with him in it. Stark discovered that the flight simulator was being drawn to a crashed alien spacecraft, and the flight simulator crashed yards away from it. Stark was badly injured by shards of metal stuck in his chest. Curious to the end, Stark made his way to the alien spacecraft, where he came upon the dying alien Rhomann Sur. The alien died before he could speak with Hal, and Hal realized he was dying as well. With his last efforts, Stark designed a suit of armor out of the alien technology, powered by a battery he found in the wreckage, one which reminded him of a lantern. The suit of armor not only allowed him to survive, but gave him incredible powers, allowing him to create any object he pleased out of a green energy, due to the battery he used being powered by Oa the Living Planet. He battled and defeated the aliens that had shot down Rhomann Sur's spacecraft.
Stark, under the name of the Iron Lantern, became a superhero, fighting against numerous enemies such as Madame Sapphire, Great White, and his arch nemesis Mandarinestro, who is behind the series of events that creates Madame Sapphire, who in turn resurrects the Great White android. Hal Stark has also been associated with the Green Guardsman, who once took over for Iron Lantern, and later came back to steal the Iron Lantern's alien battery so he could be a hero again. Other foes that Iron Lantern has faced include Dr. Whiplash and H.E.C.T.O.R..

In Showcase of Suspense #29, Hal traveled into the year 5700. In this far-off future, there is another Iron Lantern known as Arno Manning, who Hal Stark temporarily took the identity of in his travels. In addition to the Iron Lantern's connections to Arno Manning and the Green Guardsman, Hal Stark is also somehow connected to the Golden Age superhero the Human Lantern in ways that have not yet been revealed.

Powers and Abilities
Powers
Iron Lantern wears an armor that can generate a variety of effects, such as:
Constructs of green "solid energy", often of tremendous size and/or complexity
Plasma bolts
Semi-sentient computers
Flight, including flight at speeds beyond that of light by the use of wormholes
Time travel
Almost unlimited telepathic powers
Translation of virtually any all languages
Force field generation
Superhuman strength and durability
The armor is also able to convert nearby energy sources, such as heat or kinetic energy into electricity. The armor has jet skates that are now so powerful Iron Lantern can skate forward towing an entire train behind him. Miniature panes can protect Iron Lantern's eyes when needed. In addition, the armor can be completely sealed for operations in vacuum or underwater, and is shielded against radiation.
The onboard systems of the armor are controlled by Hal Stark's brain patterns, read from a cybernetic interface in his helmet.

The armor has an uni-beam projecter in its chest, pulse bolts that pick up kinetic energy along the way, so that they hit harder the further they have to travel and an electromagnetic pulse generator.

Other capabilities include generation of ultra-freon,creating and manipulating magnetic fields, sonic blasts and a holographic generator to create decoys.

Abilities
Apart from the powers granted to him by his suit, Stark is an inventive genius, constantly creating new technology and looking for ways to improve it. He is well-respected in the business world, able to command people's attentions when he speaks on economic matters. He is known for the loyalty he from and returns to those who work for him, as well as impeccable business ethics.

Strength level
While in his armor, Stark has superhuman strength (able to lift between 25 and 50 tons), without his armor, Stark has the strength of a normal human male.