Commander John-A222 is a SPARTAN-III commando of the UNSC Naval Special Warfare Command. He served extensively throughout the Human-Covenant War, becoming a decorated veteran and an advanced tactician. John specializes in marksmanship, reconaissance, and leadership. In addition, he is proficient in close-quarters combat and small-scale EMP capabilities. John is the leader of NOVA Team, an elite squad of Spartans that was deployed numerous times since its creation in 2545. John's call sign in the team is Nova One. He serves directly with the UNSC Navy but with unspecified collaboration with the Office of Naval Intelligence.
Biography
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Childhood and SPARTAN-III training
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John was born in 2526 on the human colony of New Harmony to a family of Greek descent. As a child, John was thin with dark brown hair and eyes. From early on, he displayed a superior intelligence to that of his peers which benefited him greatly in his later career as a soldier. John was conscripted into the SPARTAN-III Program in 2531 as part of the program's Alpha Company. John trained along with the other Spartans of Alpha Company at Camp Currahee on Onyx under Lieutenant Commander Kurt Ambrose, a SPARTAN-II. In training, John exhibited advanced reflexes and natural leadership ability, proving himself to be one of the top candidates. He and Carter-A259 were recognized as two of the emerging leaders of Alpha Company. During augmentations, John successfully underwent all procedures. Uniquely, he was one of the few that seemed to exhibit the full effects of the enhancements. ONI officials overseeing the project later stated that John most likely possessed the strict genetic makeup sought in SPARTAN-II candidates, allowing him to fully benefit from the CHRYSANTHEMUM augmentations.
Alpha Company was declared active in November of 2536. Equipped with Mark I Semi-Power Infiltration (SPI) armor, John and the rest of Alpha Company were initially deployed during the Insurrection of Mamore. For this counter-insurgency operation, the Spartans were divided into fireteams in order to quell the uprising. John was placed in charge of one such team and led a covert raid on an insurrectionist armory. Shortly thereafter, the Spartans openly engaged insurrectionist forces in a series of intense firefights. At one point, John managed to tackle one of his squadmate out of the way of hostile turretfire, saving her. As the fighting continued, UNSC forces gained the upper hand and eventually emerged victorious. It was at this time that John truly distinguished himself as a skilled soldier and leader. Alpha Company also participated in the Battle of New Constantinople, fought in the Bonanza asteroid belt, Far-gone colony platforms, and in several other early engagements. John's actions in this series of deployments earned him the rank of Lieutenant, Junior Grade.
He was immediately pulled from his unit, along with an
John leading his fellow SPARTAN-IIIs on Mamore, wearing SPI armor
Early Military Career
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John-A222 in his new MJOLNIR Mark IV armor
He was deployed several times from 2540 to 2543 for unknown reasons, but received a promotion to Lieutenant during this period. These and several later deployments are suspected to involve ONI and are listed as classified on John's official service record. John engaged in defensive operations during the Battle of Miridem, in which Dr. Catherine Halsey was taken hostage and later rescued by a team of SPARTAN-IIs led by John-117. With the reassignment of selected SPARTAN-IIIs from Beta Company in 2545, NOVA Team was created as a special operations Spartan team. John was assigned as its leader and took pride in the team, stating that it was an "effective unit". His battlefield actions and strategic command quickly earned him the respect of his squadmates. In 2546, when Sargasso was attacked by the Covenant, John-A222 and his team were deployed to aid in its defense. It was at this battle that UNSC forces first encountered the Type-46 Spectre ISV. Nova Team managed to acquire significant intelligence regarding the vehicle and subsequently received commendations, John being given the rank of Lieutenant Commander in the UNSC Navy. Unfortunately, the UNSC efforts failed as Sargasso was later glassed.
In the next few years, John's team fought in the Battle of Skopje and the Siege of Paris IV. The Spartans aided in defensive and evacuation efforts on both fronts and John received a promotion to Commander sometime thereafter in 2549 for his valiant efforts. Later in 2551, he and the remaining Spartans were issued the improved MJOLNIR Mark V armor for active duty.
During July of 2552, Nova Team
A222 shortly after receiving his Mark V armor
Fall of Reach
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After the discovery of a Covenant advance force by NOBLE Team 
John-A222 in New Alexandria

John-A222 assassinating a Sangheili Minor in Aszod
Defense of Earth
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The remnants of John's team were deployed 
John-A222 active in New Mombasa
Post-War
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After the end of the Human-Covenant War, most Spartans were given the option to either supplement the newly-formed Spartan Branch of the UNSC or to be assigned to a non-combat role. However, along with Spartan Blue Team, Nova Team remained unintegrated from the Spartan Branch, serving in special operations for the UNSC Navy and ONI. Retaining the rank of Commander, John continues to lead his Spartan team on high-priority deployments.
In March of 2553, Nova Team was assigned to Installation 03, or "Gamma Halo," along with several SPARTAN-IV fireteams. Deployment objectives were to reconnoiter the surface, quarantine areas of potential Flood contamination, and recover any notable Forerunner artifacts. John-A222 was given operational command of the deployed fireteams in addition to leading Nova Team on the more hazardous objectives. The four SPARTAN-IIIs of Nova Team continued operations on the ring's surface, conducting reconaissance, providing military support, and retrieving artifacts, until late 2554.
Personality
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John is known to be a serious and intelligent Spartan, always thinking tactically on the battlefield. He has grown accustomed to his status and often exhibits his leadership. As a leader, he has a strong contempt for disrespect and mistreatment. John appreciates receiveing due recognition but will sometimes show frustration if he is looked down on or ignored. Regardless, John shows great pride in being a Spartan. During the Human-Covenant War, he came to recognize the Sangheili as formidable opponents and exhibits great respect of them. This being said, he never hesitated to kill during engagements. John also seems to be compassionate toward the Huragok given their passive nature, and shows disgust for Jiralhanae.
John possesses a dry and often sarcastic sense of humor. He is known to
John-A222's MJOLNIR GEN2 armor
Given his heritage, John seems to be fluent in the Greek language. It is believed that his ancestors lived in the country of Greece on Earth. For this reason, the insignia of a Greek Spartan helmet is displayed on John's armor.
Equipment
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John's preferred weapons are the MA37/MA5C/MA5D Assault Rifle, M392/M395 Designated Marksman Rifle,SRS99-AM/SRS99-S5 AM Sniper Rifle, and the M319 Individual Grenade Launcher although he has shown profficiency with the majority of UNSC weapons. John is known to keep an M6G/M6H Magnum or anM7/Caseless Submachine Gun as a sidearm. He is also capable of using Covenant weaponry when the combat situation demands it. His armor is supplemented with MJOLNIR Active Camouflage (AV-CAM).

Concept art of John's Mark V Recon helmet

John-A222's MJOLNIR GEN2 armor
In late 2552, the remnants of Nova Team and Blue Team were issued MJOLNIR Mark VI armor variants that were superficially similar to the later MJOLNIR GEN2 armor, containing several firmware upgrades and operational updates. Such armor variants served as field tests for components and systems that would be incorporated into MJOLNIR GEN2. At this point, John was issued the NOBLE-class MJOLNIR variant with a Recon helmet rather than the standard.
As of 2558, Nova Team, Blue Team, and most other active Spartans are assumed to have transitioned to the MJOLNIR GEN2 platform. John's GEN2 Recon armor retains similarity to the GEN1 Mark VI used in 2552 with certain design improvements and identical coloration.
Trivia
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- John is currently one of the only Spartans to actually be of Greek descent.
- John-A222 has only met John-117 a few times, but he stands in great admiration of the Spartan with whom he shares a name.
- John was unique among the SPARTAN-IIIs, having the genetic specifications sought in SPARTAN-II candidates.
- John-A222 actually trained alongside Carter-A259 on numerous occasions. Coincidentally, the two would both rise to become notable UNSC Naval Commanders.
- John's Spartan tag is a possible 7 reference because given that "A" is the first letter of the alphabet, it can take an assumed value of "1". Therefore, 1 + 2 + 2 + 2 = 7.
- The emblem located on John's armor bears similarity to the emblem displayed on Jerome-092's shoulder pauldron. Given John-A222's reasoning for selecting his emblem, there is no correlation.
- John is suspected to have been involved with ONI to an unknown extent. It is believed that he possesses Section I and Section III clearance within ONI.