John Stewart is a fictional character, a comic book superhero published by DC Comics. He first appeared in Green Lantern vol. 2 #87 (December 1971/January 1972), and was created by Dennis O'Neil and Neal Adams.

John Stewart has become a major recurring character in the Green Lantern mythos within the DC Universe. He starred in the short-lived spin-off comic Green Lantern: Mosaic, of which DC published 18 issues between June 1992 and November 1993. Additionally, he was the primary character in Green Lantern (vol. 2) from issues #182 through #200, when Jordan relinquished his place in the Corps (1984–1986).

He is the second Green Lantern not to wear a mask. He is one of DC's first black costumed superheroes.^[1]

While initially unknown to non-comics readers, his profile has been raised significantly since he was featured as one of the lead characters on the television cartoon Justice League from 2001 until 2004. He continued to appear on the show's 2004-2006 sequel, Justice League Unlimited. As of 2007, John Stewart is prominently featured in DC's monthly comic books Justice League of America and Green Lantern.

John Stewart is an architect and veteran U.S. Marine who was selected by the Guardians as Hal Jordan’s backup after Guy Gardner was seriously injured in a disaster. Although Jordan objected after seeing that Stewart had a belligerent attitude to authority figures, the Guardians stood by their selection.

To Jordan, Stewart’s first mission began badly with the assignment of protecting a racist politician and Stewart took advantage of averting an accident to embarrass him in the process. However, Stewart soon proved his worth when an assassin shot at the politician, but Stewart refused to intervene with Jordan to move in response to the attack. Stewart had good reasons for this apparent dereliction of duty when he stopped a gunman from killing a police officer in the outside parking lot at the event while Jordan was pursuing a decoy. When Jordan confronted Stewart about his actions, Stewart explained that the politician had staged it for political advantage. With that adventure, Jordan concluded that Stewart was an excellent recruit after all.

For some time, Stewart occasionally filled in for him as Green Lantern when Jordan was unavailable, including some missions of the Justice League.^[2]

After Jordan gave up being Green Lantern in the 1980s, the Guardians selected Stewart for full time duty. Stewart filled that role for some years, during which time he married Katma Tui, the Green Lantern of the planet Korugar who was initially assigned to train John in the use of his ring. Kat and John served together within the Green Lantern Corps of Earth alongside Hal Jordan, Arisia, Kilowog, Salaak and other alien Green Lanterns.

After John’s ring was rendered powerless through the schemes of Sinestro, and Katma Tui was murdered at the hands of the insane Star Sapphire, Stewart’s life began to unravel.^[2] First, he was falsely accused of killing Carol Ferris, Star Sapphire’s alter ego, and then falsely accused of theft by South Nambia (a fictional DCU nation similar to Apartheid-era South Africa). Jailed and tortured in South Nambia for weeks, John freed himself with his old ring, now re-powered thanks to the efforts of Hal Jordan. As a result, John inadvertently freed both a serial killer and a terrorist. When Jordan confronted John over his actions, the two friends came to blows until John realized the “revolutionaries” he had been aiding intended to murder innocent civilians.

Afterwards, John left Earth for space, where he participated in the Cosmic Odyssey mini-series event, and failed to prevent the destruction of the planet Xanshi by an avatar of the Anti-Life Equation.^[2] The incident earned him the ire of J’onn J’onzz the Martian Manhunter, who was with him at the time. This series of tragedies left John a shattered man on the brink of suicide and created the villainess known as Fatality. J'onn J'onzz has since, at least civilly, forgiven him.

John finally forgave himself for his past mistakes and grew into a stronger, more complex hero when he became the caretaker of the "Mosaic World", a patchwork of communities from multiple planets that had been brought to Oa by an insane Guardian who had invaded John’s mind.^[2] Although bitter and sullen at his assignment at first, he overcame this and, using his formidable intellect and talent for unconventional thinking, Stewart forged the Mosaic into a new society and eventually became the first mortal Guardian of the Universe, known as the Master Builder. As his reward for this new level of awareness, John was reunited with his late wife, Katma Tui. However, tragedy struck once again and Hal Jordan, possessed by Parallax, destroyed both the Guardians and the Central Power Battery, robbing John of his newfound powers and his resurrected wife.

Following Emerald Twilight and the collapse of the Green Lantern Corps, Stewart was recruited by the Controllers to command the Darkstars, another interstellar peacekeeping force.^[2] Using the new resources at his command, John evacuated the Mosaic cities from Oa prior to its destruction and served the Darkstars with distinction until he was crippled in battle with Grayven on the planet Rann. John eventually regained the use of his legs as a parting gift from Jordan before Jordan sacrificed himself to destroy the Sun-Eater during The Final Night. As a result of Hal/Parallax healing him, he began to exhibit random bursts of energy from his hands that he was able to discharge on three different occasions. Soon afterwards, after he refused months before, he accepted a new ring entrusted to Kyle Rayner by a time-lost Hal Jordan and joined the Justice League to fill in for Kyle as he took an extended leave of absence from Earth.

With the return of Hal Jordan and the Guardians, the Corps has been reorganized. Each sector of space now has two Green Lanterns assigned to it, and Stewart and Jordan now share regular duty for Earth’s sector, 2814. After the dissolution of the Justice League in the aftermath of the events depicted in the 2004 miniseries Identity Crisis, and the destruction of their Watchtower headquarters on the moon, Stewart has begun playing a larger role in metahuman affairs, working with many former Justice Leaguers.^[2]

During the opening “One Year Later” storyline of Green Lantern, Hal Jordan tells Green Arrow that John Stewart is on an off-world undercover mission. The details concerning this mission were revealed in Green Lantern (vol. 4) #17. John Stewart disguised himself as "Hunger Dog" to investigate in Europe. When John hears that Hal Jordan is being held captive by Amon Sur and Loragg, he goes off to rescue him. This leads to a confrontation with Amon Sur, who turns out to be the son of their predecessor, Abin Sur. During the fight, Amon receives a ring from the Sinestro Corps and vanishes.

In Justice League of America (vol. 2) #7, he and Wonder Woman designed one of the League’s new headquarters, The Hall. John later resumes his role as the League's resident Green Lantern upon Hal Jordan's request.

In the Green Lantern: Sinestro Corps Special, the Green Lantern Corps are attacked by Bedovian, the sniper of the Sinestro Corps, who is capable of taking out a target from three sectors away, all from the inside of a red Sun-Eater. After Bedovian takes out several Green Lanterns, John Stewart uses his power ring as a scoped sniper rifle to track the nearby sectors. He eventually discovers Bedovian's hiding spot and shoots him. As Green Lantern Corps member were forbidden from killing sentient beings at that time, Bedovian survived the attack, as recently seen in the Blackest Night crossover. John and Guy Gardner are captured by Lyssa Drak and taken back to Qward, where the two Lanterns are held captive.^[3][4] Hal manages to defeat Lyssa and free John and Guy from their nightmares, while the Lost Lanterns recover Ion. The earth-based Lanterns then return home, only to find that New Earth, as the center of the Multiverse, is the Sinestro Corps' next target.^[5]

The Sinestro Corps and the Manhunters invade Earth. The Cyborg Superman and Superboy-Prime attack Superman, while Hal confronts Parallax, who has possessed Kyle Rayner, just before the latter is about to kill Hal's family. John orders Guy to retrieve a painting by Kyle Rayner's mother. When Parallax absorbs Hal inside himself, John looks on with sudden shock. Guy returns and shoves the painting into Parallax's eyesight, allowing Hal to use it to help Kyle overcome his fears and expel Parallax. Now in its original form, Parallax is then contained by Ganthet and Sayd within the Power Batteries of Hal, John, Guy, and Kyle. Ganthet and Sayd then reveal that they are no longer Guardians. Ganthet gives Kyle a new Power ring and asks Kyle to become a Green Lantern again, to which he agrees. The four then race off to finish the fight.^[6] At Guy Gardner's suggestion, John and the other Lanterns use Warworld as a gigantic grenade, badly wounding the Anti-Monitor, who is then thrown into space by Superboy-Prime.

John Stewart witnessed Guy being infected by the Sinestro Corps member who is a living virus, named Despotellis, and asked Soranik Natu to help Guy. Soranik used the Green Lantern Corps smallpox virus named Leezle Pon, who stops Despotellis.^[7] John Stewart was later approached by the Guardians to become one of the Alpha Lanterns, a new division of the Corps devoted to the internal affairs of the Corps. Stewart, desiring more information about the secrecy of the forbidden prophecies, declined the offer, to the extreme disappointment of the Guardians.^[8]

It has also been revealed that John served in the Marine Corps as a sniper prior to becoming an architect. While the idea of John being a former Marine was taken from the Justice League cartoon, the sniper angle is a new addition to the character's background. During his time in the Marines, John met the then young Hal Jordan when he was in the Air Force before they both join the Green Lantern Corps.^[9]

During the Rage of the Red Lanterns story arc, John Stewart is part of the guard assigned to escort Sinestro to Korugar to face execution. However, the Green Lanterns are ambushed by the Sinestro Corps and then the Red Lantern Corps under Atrocitus. The Green Lanterns are left to die in space after Atrocitus captures Sinestro, but they are saved by Saint Walker of the Blue Lantern Corps.^[10] John, however, is infected with the Red Lanterns rage. Saint Walker conjures up a blue energy construct of Katma Tui, who heals John and calms him by showing him a vision of flying with Katma. John laters tells Kilowog that he is going to see Katma again, saying that "the universe said so". In that same issue, Fatality is converted into a Star Sapphire, and orders her ring to locate John Stewart.^[11] When she tracks down John, she tells him she forgives him, and kisses him. Before departing, she encourages John to forgive himself for what happened to Xanshi.^[12]

Stewart appears in the ongoing Trinity series. He is the one to first attack the alien creature Konvikt, but when he's on the verge of defeating him, his concentration suddenly snaps, and starts muttering incoherently in binary code. A moment later, he spontaneously generates complex weapons from his body, by means unrelated to his ring. Later, he attempts to overexert himself to know how he generated those weapons by running a brutal training session against holographic Qwardian Thunderers, which does not work. He later shows Firestorm the machinery used to monitor the Cosmic Egg imprisoning Krona, but as he leaves again, he suffers from a relapse and start generating knives from his uniform, and it is revealed the entire system is broken.

Later, on board the Antimatter Earth Crime Syndicate satellite, he again loses control and nearly brings down the satellite with his blasts. It is revealed these discharges are brought about due to John's absorption of a Qwardian superweapon, the Void Hound, which has been trying to escape its containment, or at least seize control of Stewart. After the sweeping, devastating effects of the spell engineered by Morgaine Le Fey and Enigma, he is seen in an Earth under the control of a totalitarian Justice Society, where all Green Lanterns are forbidden to be. He eventually starts breaking down, and with the Void Hound gaining enough hold on him to force him to create a black hole with which force him back to Earth, he has no choice but to comply. The Void Hound is later revealed to be a servant of Krona, and it's hold over John is broken when Krona is defeated.

After a massive battle between the JLA and the Shadow Cabinet, John chooses to stay with the League despite many of its members choosing to leave.^[13] After Kimiyo Hoshi goes missing while tracking down Shadow Thief, John blackmails the armored vigilante Hardware into helping the team track her down. The League arrives in the Himalayas, discovering Kimiyo and Superman's friend Icon engaged in a fierce battle with the cosmic vampire known as Starbreaker.^[14] The JLA defeats Starbreaker, and John takes a leave of absence to go to Xanshi.^[15]

When John visits the grave of planet Xanshi, thousands of black rings fly into the planetary debris, and reconstitute the entire planet.^[16][17] Xanshi itself then speaks to John, telling him "I can help you save them." Against his better judgment, John descends to the planet's surface.^[18] Once reaching the surface, John finds himself confronted by Katma Tui and the entire population of Xanshi as Black Lanterns. While battling them all, Katma tries to weaken John by claiming that he caused the planet's destruction. However, John, spurred on by Fatality's words, says that he wasn't the cause of it all and successfully fights off the Black Lanterns.^[19] After escaping Xanshi's atmosphere, John realises that the planet is headed for Earth, along with every Black Lantern in the universe, and contacts Hal, warning him of the impending threat.^[20] Later, John is saved by combined efforts of the various Lanterns corps, who had just arrived to battle the Black Lanterns.^[21]

In the events of Brightest Day, John is seen in Oa, supervising the demolition of the buildings left in ruins after the Black Lanterns attack, and planing the reconstruction. Suddenly, he is called to the Guardians' chamber, where they order him to join Alpha Lantern Boodikka in a mission to robot planet Grenda, Stel's homeworld, where the communications ceased abruptly without explanation, and Lantern Stel and the population are missing. John agrees and departs with Boodikka.^[22]

After arriving in the planet, the two confirmed the Guardians report: the entire population mysteriously disappear. John asks Boodikka if something of her older self remains despite been turned into a Alpha Lantern, after she asks him why he refuse join the Alpha Lanterns. Boodikka responds that her changes are only physical, and she still have her former personality, John doubts about this affirmation. The two discover what seems to be a Green Lantern House Sector, that, accorded to Boodikka, its not registered. After entered inside, they discovered Green Lanterns Horoq Nnot and Stel, the last one tells John he must flee from the planet immediately. Suddenly, Boodikka turns against John and attacks him; despite John fights back, he's surrounded by more rogue Alpha Lanterns and is defeated. Its revealed that the Alpha Lanterns have begun a revolt against the rest of the corps, allied themselves with the Cyborg Superman, and take control of Grenda to use the planet as their hidden base to turn Green Lanterns into Alpha Lanterns. John Stewart is last seen wounded and bleeding, been taken to Henshaw by Boodikka. The Cyborg Superman then begins the cosmic surgery to turn John into another Alpha Lantern.^[23]

• John Stewart’s power ring provides him with the abilities of all other Green Lanterns, these abilities include flight and limited invulnerability.
• As with all other Green Lanterns, the ring is a weapon of the mind and powered by will, therefore only limited to the wearer’s imagination.
• Like all Green Lanterns, Stewart's personality affects his ring's creations, giving them a solid, architectural quality. In Green Lantern: Rebirth, Hal Jordan remarks that "everything John builds is solid". He also remarked that Stewart is the best flyer in the Corps.
• In Green Lantern (vol. 4) #26, it was shown that John's willpower exceeds the limit of his ring (when he tried to recreate a planet from scratch), a feat that had not been depicted before this point.
• John is a discharged member of the USMC with full combat training. In addition he is an expert sniper.

• John Stewart has appeared in the Justice League Unlimited spin-off comic book.
• He is a member of the Green Lantern Marine Corps in Superman: Red Son.
• He appeared as a reserve Green Lantern in Justice.
• John, known now as Power Ring, is shown to be a member of the anti-matter universe Crime Syndicate that attempts to kidnap Power Girl in JSA: Classified.

John Stewart, played by Nick Jones, might have a cameo in a bar fight with the more well known Hal Jordan, played by Ryan Reynolds, about Marine versus Air Force. ^[24]

John Stewart (voiced by Phil LaMarr) is one of the founding members of the Justice League, as seen in the animated series of the same name and its subsequent Justice League Unlimited. His characterization initially differed from the comics version by being a former United States Marine and having not been explicitly revealed to have studied architecture. Since then the comic book version has been updated to reflect these changes.

In a development not seen in any other version of the Green Lantern mythos, Stewart's eyes glow green as a side effect of his fifteen years of exposure to the power ring's radiation; the glow fades when the ring runs out energy or if he is physically separated from the ring. Bruce Timm said this was done to give Stewart's face a more visually interesting look, as they decided to stick with the comic book tradition of depicting John Stewart without a mask. By many accounts, the ring is also effective against yellow, contradicting an age-old weakness of the Lantern Corps. This is in continuity with the earlier appearance of Kyle Rayner on Superman: The Animated Series. There have been a few instances in the show of something yellow somehow counteracting the Lantern energy, but he is never explicitly shown to have the same weakness from the comics.

Having two main characters with similar names (John and J'onn) can lead to minor confusion (Flash sometimes collectively refers to them as the two Johns); the closed captioning of some episodes misspell John's name as J'onn and vice versa.

One development during these series was the serialized love story that developed between his character and Hawkgirl (real name: Shayera Hol). Shortly after they admitted their feelings for each other, "Starcrossed" occurred, revealing that Hawkgirl was a spy for the Thanagarian forces, and that she has betrayed their secrets to her home Thanagarians. During Shayera's self-imposed exile, the League expanded to 57 members (in the retitled Justice League Unlimited) and Stewart found a new girlfriend: superheroine and supermodel Mari Jiwi McCabe/Vixen. However, the episode "The Once and Future Thing" revealed that the hero Warhawk, first seen in Batman Beyond, was the future son of himself and Shayera. He was also shown to be a role model to Static in Static Shock.

Katma Tui also makes an appearance in the episode Hearts and Minds, where it is discovered that they once loved one another. He has appeared to have lost his ability to control his ring efficiently because of a losing fight with Despero. She tried to retrain him, but he does not take well to it. When Despero threatens both women, it is HawkGirl's being in danger that refocuses him and reveals that his feelings for her are stronger than his with Katma.

John will appear in the upcoming Young Justice series as a member of the Justice League.^[25]

John Stewart is a featured character in the video game Justice League Heroes, voiced by Michael Jai White.

John Stewart was portrayed by Tim Meadows, wearing his Green Lantern: Mosaic costume, in a Saturday Night Live sketch inspired by the then-recent The Death of Superman comic storyline.

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• Green Lantern (John Stewart) at the Comic Book DB (archived from the original)
• Green Lantern: The Central Battery
• Alan Kistler’s profile on Green Lantern
• John Stewart at The Book of OA
• The Rise of the Black Green Lantern
• The Green Lantern Shrine
• Toonzone: John Stewart