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     In General 

United Nations Space Command (UNSC)

The primary military, exploratory, and scientific organization of the Unified Earth Government (UEG). The UNSC headed the effort to protect humanity from the Covenant and most major human characters belong to it.

  • Anti-Hero: The UNSC as a whole, Sure, they might be the best defense for humanity against the Covenant and other threats, but they're still a ruthless military state that's committed a number of atrocities with very dubious benefits.
  • Badass Army: It's mentioned that the UNSC actually won several ground battles with the Covenant's forces, albeit usually at a pyrrhic cost. Unfortunately, most of those victories would be then quickly undone through the Covenant then "glassing" the planet from orbit.
  • Badass Navy: Not nearly as much as the Covenant's, but their space-faring navy is still incredibly formidable, and has only become even more so after the Great War's end and more time & money could be invested in R&D.
  • Black-and-Grey Morality: They are the (admittedly) dark Grey to the Black of both the Covenant and Flood. On the one hand, the UNSC is an authoritarian military state that once nuked a colony simply to stop a rebellion, and approved two Super Soldier programs that primarily conscripted/recruited young children. On the other hand, at least they don't want to wipe out entire sapient species or turn everyone into zombies.
    • The UNSC's semi-shadow government, the Office of Naval Intelligence, veers much closer to the black side of things, with its willingness to do things even the rest of the UNSC doesn't approve of. Heck, ONI's actions border on Stupid Evil at times, such as when they nearly started another war between the Elites and humanity after the events of Halo 3 by supporting the Servants of Abiding Truth against the Arbiter, despite the latter being one of humanity's most valuable allies against total extinction.
    • Halo 4: Forward Unto Dawn fully reveals the level of the UNSC's indoctrination of its own citizens as well. They named their top military academy after a Roman general who committed suicide because his emperor ordered him to, purely because said emperor saw him as a threat to imperial power. The UNSC glorifies said general as an example of what all UNSC officers should be, and even makes the last words that he used to justify his suicide the official motto of the academy.
  • Civil War: Was beginning to tear itself apart before the Covenant gave humanity a reason to unite.
  • Darker and Edgier: While the UNSC isn't shown to exactly be all sunshine and rainbows in the games themselves, the Expanded Universe often expands on the darker aspects of the UNSC.
  • Defiant to the End: Humanity's dignity and sheer stubbornness in the face of their eventual extinction impressed most members of the Covenant's military leadership, to the point when many Sangheili became confused why such great warriors as the humans weren't being invited into the Covenant like other races had.
  • Determinator: The UNSC, despite being an industrial midget compared to the technologically superior Covenant, still managed to fight them tooth and nail for over a quarter of a century.
  • Does This Remind You of Anything?: The Great War between them and the Covenant has more than a few parallels to The Crusades, with them in the role of the native Islamic Caliphates of the Middle East and the Covenant as the various bickering European Christian powers. The space-faring parts of the war, however, have also gotten comparisons to the Pacific War waged between the navies of the United States of America and the Empire of Japan.
  • Emergency Authority: After the outset of the Covenant War, the UEG transferred all of its powers to the UNSC so that the latter could establish an emergency military government. Post-war, the UEG has been officially restored as the primary governing body of mankind, but the UNSC in practice still holds most of the power, particularly in the colonies.
  • Enemy Mine: With the Insurrectionists in a number of battles against the Covenant, such as Metisette and Psi Serpentis, and with the Elite-led Separatists against the Covenant Loyalists during the war's last year. They've also continued an uneasy alliance with the Swords of Sanghelios after the end of the Great War.
    • There were also some temporary Human-Covenant alliances from before the Great Schism, as shown in Halo: Evolutions and Halo: Blood Line, but those all broke apart as soon as one side completed their immediate objective.
  • Fantasy Counterpart Culture: Heavily downplayed. As a whole, the UNSC has a lot of United Space of America in their overall military structure, though (as shown in Foreward Unto Dawn) they also have a lot of inspiration taken from The Roman Empire in terms of their authoritarian militarism (with a few fans even comparing the UNSC having control ceded to them from the UEG as comparable to the fall of the Roman Republic and it becoming an empire under Octavian).
  • The Federation: The UEG is ostensibly a representative democracy where all worlds have individual representation, though in practice Earth has a disproportionate amount of power. However, the UNSC itself tends to exercise power in a more authoritarian fashion, especially once it took power from the UEG during the Human-Covenant War, a trend that has to some extent continued even after civilian rule was restored post-war.
  • Grey-and-Gray Morality: How the conflict between the UNSC and the Insurrection is generally depicted, with both sides being a rather dark shade of such. On one hand, the Innies have legitimate gripes about how many colony worlds (particularly those under corporate rule) are run. On the other hand, many Insurrectionists utilize incredibly brutal terrorist tactics (including murdering schoolchildren and nuking millions of civilians); several were even initially willing to sell out the rest of humanity (including fellow outer colonists) to the Covenant simply to screw over the UNSC.
  • Humans Are Warriors: The UNSC takes great pride in its well-trained and expertly-led military, and their skill and valor against vastly overwhelming forces in the Great War won respect from many Covenant warriors (especially the Elites), with some even believing that they had earned the right to join the Covenant.
  • Kinetic Weapons Are Just Better: Explosively or magnetically propelled kinetic weaponry, along with tactical explosives and the occasional nuke, form the mainstay of UNSC weaponry both on the ground and in space. The only energy weapon designs they are known to possess are the shoulder-mounted Spartan Laser, laser turrets on select aircraft (mostly ONI prowlers), and a prototype plasma mortar tank that was deployed only rarely. Nevertheless, despite their overall technological inferiority, some of the humans' ballistic weapons were actually somewhat more effective than their energy-based Covenant counterparts.
    • Post-war, much of the remaining gap between human ballistic weaponry and Covenant energy weapons has been closed, at the very least. Additionally, the UNSC has experimenting with heavier versions of the Spartan Laser to put on its vehicles, with the Infinity's Pelicans having already successfully made the transition.
  • Mega-Corp: The UNSC has a number of powerful interstellar corporations, some of whom own entire colonies.
  • Nice Job Breaking It, Hero; Their terrible treatment of the Outer Colonies that humanity was setting up helped fan the flames of the Insurrection that they would later be stuck dealing with for several decades both prior to and after the Great War with the Covenant.
  • Police State: A downplayed example. The UNSC is (usually) not overtly authoritarian in how it rules, but it uses several underhanded methods to maintain its power, particularly when it comes to controlling the flow of information. In fact, the effectiveness of its propaganda in the Inner Colonies during the Great War almost reaches the level of absurdity, as many people on Earth actually thought the UNSC was winning the war before the Covenant started attacking New Mombasa.
  • Remember the Alamo: Common battle cries for the UNSC are "Remember Harvest!" or "Remember Reach!".
  • Right Hand Versus Left Hand: Suffers from a certain degree of infighting, largely thanks to the manipulations of ONI.
  • Rock Beats Laser: Although UNSC technology is explicitly stated to have been mostly inferior to Covenant tech during the Human-Covenant war, the humans made very good use of what they had. This can be seen especially in space; while a single Covenant ship was worth at least three UNSC ships in a straight fight, clever tactics and positioning allowed the UNSC Navy to often hold its own even against overwhelming numbers. Well, that and their Magnetic Accelerator Cannons and nuclear warheads (the heaviest variants capable of one-shotting even shielded Covenant ships).
  • Sanity Has Advantages: A thematic case/variant. Part of the reason for why the UNSC was able to resist the Covenant for so long is explained as being due to them lacking the sheer religious fanaticism showcased by most of the Covenant's upper leadership, which often had the Covenant making profoundly idiotic strategic/tactical decisions in the name of their religion (i.e., gathering Forerunner artifacts but only barely researching them (if at all) and sacrificing countless soldiers on the battlefield to settle leadership disputes).
  • Teeth-Clenched Teamwork: The general summary of their relationship with the Swords of Sanghelios after the Great War is this. Sure, they know that they both can't really afford a war with each other and that it's best to work together against more serious threats (i.e., the various Covenant remnants and rampaging Forerunner ancillas), but that doesn't necessarily mean that they like each other.
  • Theme Naming: UNSC ground vehicles are named after animals, aerial vehicles are named after flying animals, and fighters are named after bladed weapons. Meanwhile, the Reporting Names they give to Covenant vehicles are all mythological monsters (usually some form of ethereal undead, like ghosts, wraiths and phantoms).
  • Took a Level in Badass: Following the end of the Human-Covenant War, the UNSC finally got a chance to implement new and improved technology that was still in the pipeline at the time the war ended. The most prominent examples would be the commissioning of their new flagship, the 5-kilometer long Infinity, along with the proliferation of shield technology, now seen on all starships, fighters, ground mechs, and, naturally, the powered armor used by the new SPARTAN-IV corps.
  • United Nations Is a Superpower: In SPACE!!!
  • The War of Earthly Aggression: Before the Human-Covenant war, the UNSC ran the risk of splintering under the weight of rebellions in its Outer Colonies.
  • We ARE Struggling Together: Not nearly to the extent of the Covenant, but they also still suffered from infighting in the form of independently-minded colonies and instances of Right Hand Versus Left Hand (largely thanks to ONI) during the Great War. It also hasn't exactly gotten better after the Great War, with the UNSC having to still deal with Covenant remnants and several Insurrectionist organizations now openly acting against them across the few remaining Outer Colonies, not to mention ONI working behind the scenes on policies that if made public would likely sour any goodwill what alien allies they have towards them.
  • Well-Intentioned Extremist: Despite the dubious ethics of many of its policies, most of the military officers who actually run the UNSC genuinely believe that they're doing what's best for humanity in a dangerous and uncertain galaxy, with many being more than willing to sacrifice even themselves in the name of the greater good.
  • Worthy Opponent: Most of the Sangheili saw the UNSC (and, by extension, humanity itself) as this by the end of the Great War.

Army Troopers

     In General 


The branch of the UNSC military primarily responsible for groundside defense and occupation.

  • All the Other Reindeer: In Halo: Glasslands, it's noted that for some unknown reason, no Army officers were even invited to attend the ceremony for John-117.
  • Badass Army: UNSC High Command may generally prefer the Marines over the Army to be the spearhead of a campaign, but the latter has a pretty distinguished combat record themselves. Even 1-v-1 and in-game, a properly-equipped trooper can often hold their own against the Covenant's best.
  • The Engineer: One of their main tasks is civil engineering (specifically, the projects that also have military applications).
  • Hufflepuff House: Despite providing the majority of the actual soldiers in most UNSC ground campaigns, they're the second least seen branch of the UNSC armed forces (next to the Air Force) in Halo media, taking five games to finally show up in a campaign. Supplementary Halo 4 materials and Spartan Ops mention that they're also serving alongside the Infinity on Requiem, but we never actually see them in in-game.
  • Ranger: Like their real-life counterparts, UNSC Army Rangers are skilled light infantry specializing in mobility and stealth; during the Human-Covenant War, they were primarily deployed as guerillas.
  • Redshirt Army: Particularly in the higher difficulties of Halo: Reach, they're more there to provide extra bodies against the Covenant than anything else.
  • We Will Wear Armor in the Future: Reasonably effective against bullets and shrapnel, less so against plasma.

     COL. Urban Holland 

Colonel Urban Holland
Homeworld: Unknown
Birthdate: Unknown
Debuted in: Halo: Reach
Voiced by: Pat Duke

"The Office of Naval Intelligence believes deployment of a Spartan team is a gross misallocation of valuable resources... I disagree."

Noble Team's commanding officer and the head of Special Warfare Group Three.

  • Mission Control: As a normal human, he doesn't take to the field with Noble Team, but provides orders and support from the backlines.
  • Reasonable Authority Figure: He may be stern, but he's willing to stick his neck out to back Noble Team's crazier ideas if he thinks that's the best option they have. He's also the one who decided that the Spartans of Noble should all be warrant and commissioned officers, ensuring that less reasonable authority figures wouldn't have the rank to subvert their missions.
  • Voice with an Internet Connection: In fact, despite being a relatively important supporting character in Halo: Reach, he doesn't even have a character model; the only thing we see of him are a few brief glimpses of monitors showing the image above.
  • What Happened to the Mouse?: He last contacts Noble Team during the penultimate level of Reach, and his fate has yet to be revealed in any Expanded Universe works.

     SGM. Duvall 

Sergeant Major Duvall
Homeworld: Unknown
Birthdate: Unknown
Debuted in: Halo: Reach

"Awful day so far... Let's keep it from getting any worse, huh?"

A army NCO helping to coordinate the evacuation of New Alexandria during the Fall of Reach. He assists Spartan-B312 during the battle.

  • Gameplay Ally Immortality: Notable for being one of the few minor characters to be unkillable during gameplay.
  • Mission Control: Is primarily seen/heard coordinating evacuation efforts over the radio. He also provides orders for Six towards the end of "Exodus" (despite being technically lower-ranked). That said, you can bring him into battle if you can coax him onto a Warthog.
  • Nice Hat: Like most UNSC sergeants, he wears a cap.
  • No Name Given: His given name is unknown.
  • Sergeant Rock: Does his best to keep his troops together despite how desperate the situation's become.
  • You Are in Command Now: Implied to be the case, given that under somewhat better circumstances, it likely would have been a commissioned officer taking his role in coordinating the evacuation.

     SGT. Holly Tanaka 

Sergeant Holly Tanaka

See the Halo: SPARTAN-IV Program page for more details.

Colonial Militia

     In General 

Colonial Militia

Besides its regular military, the UNSC also oversees the Colonial Militia, which are locally-based defense forces present on most colony planets, with each world's branch recruiting primarily from its own population. Though their official jobs are simply disaster relief and basic internal security, many Colonial Militias are in practice paramilitaries capable of sustained counter-insurgency operations.

  • Break Out the Museum Piece: Are generally not given the most up-to-date equipment, though some militias find ways to "creatively" acquire better gear.
  • Home Guard: They serve as a colony's primary defense force when UNSC regulars are not around. As they're typically trained by UNSC regulars, they can be reasonably effective when properly led.
  • Ragtag Bunch of Misfits: Colonial Militia personnel can include everyone from aging retired cops to kids too green to join the regular UNSC military.
  • Redshirt Army: Even by the standards of the rest of the UNSC, they tend to have a pretty short lifespan when fighting against Covenant.
  • The Scrounger: If the Reach militiamen encountered in Halo: Reach are any indication, Colonial Militias can make up for any equipment shortfall by employing people who can surreptitiously siphon off weapons, rations, etc. from the UNSC proper.



Homeworld: Harvest
Birthdate: Unknown

A gifted sharpshooter, Forsell was a new recruit of Harvest's Colonial Militia when the Covenant attacked in 2525.

  • Bash Brothers: Develops a close friendship with Jenkins, and the two work together so well that they almost take down Johnson during training.
  • Big Eater: When Jenkins lets him take whatever he wants from Jenkins's MRE, Forsell ends up taking everything.
  • The Big Guy: The biggest and physically strongest of the militia recruits.
  • Combat Pragmatist: During a training exercise, he wins against Stisen by knocking him off the beam while Stisen's distracted by something their drill sergeant Byrne just said.
  • Doomed Hometown: Since Harvest is the first human colony to be glassed.
  • Farm Boy: Comes from a relatively poor farming family.
  • Long-Range Fighter: Despite his brawny appearance, he's a crack shot.
  • The Quiet One: Described as being rather quiet.
  • Smarter Than You Look: Jenkins initially assumes he's kind of dim, but Forsell is the one who teaches Jenkins various techniques to help him aim properly.
  • Target Spotter: Becomes Jenkins's spotter in the militia.
  • What Happened to the Mouse?: Despite being Jenkins's last remaining friend at the end of Halo: Contact Harvest, Forsell's fate during the war remains unknown; we don't even know if he took up Johnson's offer to join the Marine Corps.

     Wallace Jenkins 

Wallace A. Jenkins

See the Halo: UNSC Marines and ODST page for more details.


Corbulo Military Academy

     In General 

Corbulo Academy of Military Science

Located on Circinius IV, the Corbulo Academy of Military Science (CAMS) is one of the premier Officer Candidate Schools in the UNSC, with many of its cadets being the children of the elite of UNSC society.

  • Boarding School: The teenage cadets all live in dorms on the campus.
  • Elaborate University High: Structured like a university despite its students all being around fifteen to eighteen years old. It even has its own Space Elevator.
  • Military School: One of the most renowned in the UNSC.
  • My Country, Right or Wrong: The school's motto is taken from a quote said by the school's namesake as he committed suicide on the orders of Emperor Nero, with superintendent General Black saying that Corbulo represented the "honor, valor, and allegiance" expected of cadets. Indeed, Black believed that defeating the Insurrection would require instilling colony kids (including many of Corbulo's own cadets) with a rigorously pro-UEG education.
  • Named After Somebody Famous: Roman general Gnaeus Domitius Corbulo.

     Gen. Daniel Black 

General Daniel Black
Homeworld: Unknown
Birthdate: Unknown
Portrayed by: Mike Dopud

"Send me you sons, your daughters. And I will transform their bodies, I will discipline their minds, and I will rid their hearts of fear. Make no mistake. This is a call to arms. The enemy is out there waiting, in the shadows of those stars, to slaughter our future. So I ask you: What will your legacy be? Send me the next generation of soldiers and I will give you the next generation of heroes."

The superintendent of Corbulo Academy of Military Science in the year 2526, Black is a decorated Marine with a hardline attitude towards the Insurrection.

  • Character Death: Lasky finds his body in the driver's seat of a Warthog the cadets then use to escape.
  • Cigar Chomper: Like many UNSC officers, he seems to have a fondness for cigars.
  • Four-Star Badass: Earned his stripes fighting against Insurrectionists during Operation: TREBUCHET.
  • Secret-Keeper: Being a high-ranking officer in charge of a major UNSC facility near the edge of UNSC space, he is one of the handful of officers informed about the Covenant during the early months of the war. He kept news of the aliens from the staff and students while instituting communications blackouts to prevent leaks.
  • Undying Loyalty: To the UNSC. He views the military as the only thing keeping order among humanity and views the insurrectionists as selfish and violent people who needed to be crushed.
  • Veteran Instructor: He is a highly decorated veteran and is responsible for teaching the next generation of UNSC officers, a duty he takes very seriously. Black is noted to personally intervene when a training squad is not performing as well as expected in order to solve whatever issues are causing the problem.

     Col. Kennedy Mehaffey 

Colonel Kennedy Lynn "Icepick" Mehaffey
Homeworld: Desdoron V
Birthdate: Unknown
Portrayed by: Ayelet Zurer

A professor at the Corbulo Academy of Military Science in 2526, she served with Thomas Lasky's mother as an ODST before taking her position at the academy.

  • Action Girl: As a former ODST, she's still able to fight alongside her men when the Covenant invade.
  • Colonel Badass: She may no longer be fighting on the frontlines, but she is still plenty badass.
  • Cruel and Unusual Death: While trying to protect the cades, she gets shot with several needler rounds which proceed to explode inside her body.
  • Knife Nut: Part of the reason why she got her nickname back when she was still an active combatant; Mahaffey preferred to engage in close-quarters combat with her knife.
  • The Mentor: Tries to encourage Lasky to live up to his potential, and succeeds to some degree.
  • Mentor Occupational Hazard: Dies in the early stages of the Covenant invasion.
  • Rugged Scar: Has a scar next to her right eye.
  • She Is the King: She's referred to as "sir", like all the female officers at Corbulo.
  • Shrouded in Myth: Said scar was a source of many urban legends among Corbulo's students during her tenure, due to the fact that she was famously transferred off the frontlines "without a scratch" from combat.
  • Veteran Instructor: Like General Black, she is a highly-decorated soldier who takes a very hands-on role in training and mentoring recruits.

     April Orenski 

Officer Cadet April Orenski (45353-09738-AO)
Homeworld: Harvest
Birthdate: June 18, 2508
Portrayed by: Enisha Brewster

A senior cadet at the Corbulo Academy of Military Science in 2526. She is the leader of Hastati Squad.

  • Drill Sergeant Nasty: Definitely a hardass; at one point she even disciplines Lasky by shooting him point-blank with stun rounds.
  • Jerk with a Heart of Gold: Despite the above, she does care about her squad.
  • The Leader: In charge of maintain discipline of Hastati Squad, while either Lasky or Vickers has command in training exercises which she oversees. She's definitely out of her depth during the Covenant attack, but she does about as well as a cadet with no field experience could in her situation.
  • Military Brat: Daughter of two high-ranking officers.
  • Not So Stoic: Despite her stoic reputation, she's clearly freaked out when the Covenant invade Corbulo Academy.
  • She Is the King: Like Col. Maheffey, is referred to as "sir".
  • The Stoic: Lasky and Sully refer to her as "the Robot".
  • What Happened to the Mouse?: Unlike Lasky and Sully, we never see her again.

     Chyler Silva 

Officer Cadet Chyler Silva
Homeworld: Cygnus
Birthdate: c. 2510
Portrayed by: Anna Popplewell

A freshman cadet at the Corbulo Academy of Military Science in 2526, serving in Hastati Squad. She spent much of her youth surrounded by Insurrectionist violence on Mamore, and believes they have to be stopped, a view which clashes with her friend Lasky's more tolerant opinion towards them.

  • Action Girl: Possibly Hastati's most talented soldier, being the only member who's able to actually kill Covenant soldiers.
  • Died in Your Arms Tonight: Dies in Lasky's arms.
  • Friendly Sniper: She's one of the friendliest cadets, and is one of the best shots in Hastati Squad. She even wields a Covenant carbine with some skill.
  • Improbable Aiming Skills: She's only a cadet, but she manages to pick off a Jackal sniper while using a carbine for the first time, and takes down at least two shield-wielding Jackals while firing an assault rifle from a moving Warthog.
  • The Lost Lenore: Is implied to be Lasky's first love, and even over thirty years after her death, Lasky still keeps her dog tags as a memento.
  • Military Brat: Her parents served and died in the UNSC Defense Force.
  • Nice Girl: One of the few people who is actually nice to Lasky even before he shows his commanding skills, and one of only two cadets who are friends with him.
  • Opposites Attract: Silva is very loyal to the UNSC and takes her training quite seriously, while Lasky has strong doubts about whether he's even doing the right thing by being a cadet. Nonetheless, the two become quite close, and even end up sharing a kiss right before the Covenant start invading.
  • Parental Abandonment: Due to her parents dying in the military.
  • Take a Moment to Catch Your Death: After being hit by a single Needler shard while Lasky is driving the Warthog to try to escape the planet, she only notices it after they stop for the moment. However, not quite as sudden as other examples, as she has a slow (and rather painful) death sequence that allows her some last words.

     Michael Sullivan 

Commander Michael "Sully" Sullivan (26582-72839-MS)
Homeworld: Emerald Cove
Birthdate: September 3, 2510
Portrayed and voiced by: Masam Holden (Halo 4: Forward Unto Dawn), Jerry Trainor (HUNT the TRUTH)

A freshman cadet at the Corbulo Academy of Military Science in 2526, Sullivan was one of the few members of Hastati Squad to be friends with Lasky. He is skilled at hacking, to the point of being able to access even restricted ONI files.

Following graduation, he joined the UNSC Navy, and was eventually recruited by the Office of Naval Intelligence. After the Human-Covenant war ends, he becomes ONI's Senior Communications Director.

  • Actual Pacifist: States in his cadet interview that he's unsure about whether he could actually kill another human, with plans to become a researcher like his father instead. However, this seems to have fully worn off by the time he joined ONI.
  • Became Their Own Antithesis: Goes from being a laid-back Playful Hacker to a ruthless cog in ONI's propaganda machine.
  • Bitch in Sheep's Clothing: As Senior Communications Director, he maintains a light-hearted and easygoing facade, but he's ultimately just as cold and ruthless as you'd expect from a high-ranking ONI officer.
  • Break the Cutie: Sullivan was easily the friendliest and most laid-back of Hastati Squad. By the end of Halo 4: Forward Unto Dawn, his roommate and two other squadmates have been killed by the Covenant, who've also massacred most of the rest of the academy, and he himself gets nailed in the leg with a needle round.
  • Brilliant, but Lazy: His laid-back attitude led to his father sending him to Corbulo for structure. Even then, he was not too concerned about performing poorly in training exercises, spending considerable effort to avoid any real hardships.
  • Cynicism Catalyst: The Covenant's massacre of the Corbulo cadets in Forward Unto Dawn are implied to have played a major role in turning him into the cynical and ruthless ONI agent we see in HUNT the TRUTH.
  • Disappeared Dad: Mentions in his cadet interview that his father was a researcher for the UNSC, with the implication that he died sometime before the start of Forward Unto Dawn, which serves as part of Sullivan's motivation for continuing to attend Corbulo, despite having no real ill will against the Innies.
    • Additionally, supplementary information mentions that he and his siblings were primarily raised by their mother, due to their busy father being all but absent from their lives (except for being the parent who sent Michael to Corbulo in the first place).
  • Jerkass Has a Point: Maya is forced to admit the validity of his point that releasing all the intel could possibly do more harm than good, though she still thinks he's an asshole.
  • Nice Guy: As a cadet at Corbulo, being one of only a few who treats Lasky kindly.
  • Pet the Dog: Reveals in Season 2 of Hunt the Truth that as horrible as Benjamin's Giraud's situation currently is under ONI custody, it was even worse before he decided to step in.
  • Playful Hacker: At Corbulo, he notices that ONI was hiding something from the cadets and decided to hack into restricted files to find out what.
  • Plucky Comic Relief: As a cadet, he's able to keep up some semblance of humor even during the Covenant invasion.
  • Propaganda Machine: Becomes a member of ONI's Section Two after the war. Especially ironic when you consider that one of the first things he did as a cadet was to hack into files that ONI didn't want him to see.
  • The Smart Guy: As a cadet, he not only managed to figure out that ONI was hiding some very big secrets, but could also hack their files. Note that this is an organization that prides itself on its paranoid security measures, including having its files guarded by frickin' smart AIs. Not surprisingly, he originally hoped to become a UNSC researcher, like his father was. However, he ended up putting his technological and analytical talents to use as an ONI agent instead.
  • The Spook: Particularly during the Coveannt War, when he worked for ONI's Section One as an intelligence agent.
  • Took a Level in Jerkass:
    • By the time of Hunt The Truth, it's clear that the class clown of Corbulo Academy has become quite cold, with whatever's left of his old self being just a facade.
    • He's also pretty dismissive of Agent Maya Sankar, more or less brushing off her warnings about the unrest in the Outer Colonies.
  • Unscrupulous Hero: When he was still with the regular Navy, his extreme ruthlessness unnerved even his own superiors... and led to his recruitment by ONI.
  • Used to Be a Sweet Kid: He was definitely the most easygoing cadet among Hastati Squad in 2526, but this is no longer the case by 2558.

     Walter Vickers 

Officer Cadet Walter Vickers
Homeworld: Boundary
Birthdate: c. 2510
Portrayed by: Iain Belcher

A freshman cadet at the Corbulo Academy of Military Science in 2526. He took over as team leader of Hastati Squad after Lasky was demoted. He hates the Insurrection and dislikes Lasky for his sympathetic views towards them, as well as for his questioning of his leadership ability.

  • The Big Guy: The fittest member of Hastati.
  • Heroic Sacrifice: He charges at the Elite to try and give the other cadets a chance to escape, and is shot in the chest for his efforts. It's left vague whether he bought time for the Master Chief to arrive and save everyone else, or if Chief would have been able to save everyone anyways.
  • I'm Not Here to Make Friends: States in his cadet interview that being at Corbulo is not about making friends, but learning to be the best soldier possible, which suits him just fine.
  • Jerkass: Insults Lasky by making a crack about his dead brother as revenge for Lasky's behavior in training exercises. While he has good reason to be pissed at Lasky, that crossed a line.
  • Jerk with a Heart of Gold: After Lasky comes up with a plan that wins Hastati squad the final exercise of the semester, Vickers gives him a respectful nod. He also attempts to give the rest of Hastati a chance to escape by charging an Elite by himself.
  • The Leader: He is the team leader of Hastati Squad during at least one of their exercises.

     Dimah Tchakova 

Officer Cadet Dimah Tchakova
Homeworld: Reach
Birthdate: c. 2510
Portrayed by: Katerina Katelieva

A freshman cadet at the Corbulo Academy of Military Science in 2526. Her mother is the secretary of FLEETCOM and her father is a high ranking intelligence officer, so she considers her military career to be something she was born to do. She is friends with fellow Hastati squadmate JJ.

  • Blind Obedience: Subverted; when Lasky complains that Vickers's orders during an exercise didn't make sense, she tells him that it didn't matter and that he should have followed them anyway. However, she later decides to not report her roommate Sully for hacking into secure files, and ends up exploiting her family connections to circumvent evacuation protocols.
  • Death by Irony: She uses her mother's position to be one of the first people evacuated when the academy comes under attack by the Covenant, but dies when the Covenant ships destroy the orbital elevator as she is riding it up.
  • Girls Love Stuffed Animals: Has a stuffed toy among her personal possessions at Corbulo. In her case, it's less about femininity per se, and more about reminding the viewer that she and the rest of Hastati are still only young teenagers.
  • Military Brat: It is pretty easy to tell she was raised in a purely military lifestyle all her life.
  • Only Child Syndrome: She is her parents' only kid, and thus feels that she has a lot to live up to as she is her family's future.
  • Sacrificial Lamb: The first member of Hastati to die.
  • Screw the Rules, I Have Connections!: She's not afraid to exploit her family connections, despite her stated belief that orders should be followed no matter what. She intimidates a Marine into letting her onto one of the first evacuation pods by threatening him with her mother’s authority as Secretary of FLEETCOM. She offers the same chance to her squadmates, but they all refuse, and she dies when the Covenant destroy the orbital elevator.

     Junjie Chen 

Officer Cadet Junjie "JJ" Chen
Homeworld: Earth
Birthdate: c. 2510
Portrayed by: Osric Chau

A freshman cadet at the Corbulo Academy of Military Science in 2526. He is the only member of Hastati Squad to be from Earth and is friends with Dimah.

  • Asian and Nerdy: Is of Chinese descent and noted to have very high academic scores, though his combat skills are lacking.
  • Impaled with Extreme Prejudice: Run through by a stealthed Elite Zealot's energy sword.
  • Mauve Shirt: Gets bits of characterization throughout Forward Unto Dawn, and even volunteers to take point during the Covenant invasion, but he ends up being the second member of Hastati to die.
  • Missing Mom: His mom died five years before he went to Corbulo.
  • "Well Done, Son!" Guy: Attends Corbulo primarily to satisfy his father, who has very high expectations of his son and will not hesitate to express any disappointment in JJ's performance.