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The quarians are a nomadic species of humanoid aliens known for their skills with technology and synthetic intelligence. Since their homeworld Rannoch was conquered, the quarians live aboard the Migrant Fleet, a huge collection of starships that travels as a single fleet.

Approximately three hundred years before the events of 2183, the quarians created the geth, a species of rudimentary artificial intelligences, to serve as an efficient source of manual labor. However, when the geth gradually became sentient, the quarians became terrified of possible consequences and tried to destroy their creations. The geth won the resulting war and forced their creators into exile. Now the quarians wander the galaxy in a flotilla of salvaged ships, secondhand vessels, and recycled technology.


A female quarian without her mask

Quarians are generally shorter and of slighter build than humans. Quarians have an endoskeleton, lips, teeth, and two eyes with eyelids and tear ducts. Their ears or ear analogues differ in a noticeable fashion from those of humans, with references made to "what [passes] for the quarian version of an ear". Their eyes can see into the ultraviolet end of the spectrum; their suit HUDs can show information in those wavelengths. Quarian facial structure and hair makes them the most similar to humans out of all known sapient species.

They also have three thick fingers on both hands which include a thumb, an index finger, and a long finger, similar to the middle fingers for humans, as well as three toes on each foot. Their lower legs are bowed backwards significantly, compared to asari or humans. Aside from hands and legs, their general body shape and sexual dimorphism is similar to humans. Male quarians, however, appear to lack a third toe. Like humans, quarian blood is red.

The most distinguishing feature of quarian biology is their weak immune system, compounded by centuries of living in sterile environments. As a result, all quarians by necessity dress in highly sophisticated enviro-suits, to protect them from disease or infection if they are injured. Their suits can be compartmentalized in the event of a tear or similar breach to prevent the spread of contaminants (similar to a ship sealing off bulkheads in the event of a hull breach). Along with their suits, quarians also have extensive cybernetic augmentations integrated into their bodies. A quarian's lifespan is roughly equal to a human's, but is prone to be less if infection breaks into the suit.

Quarian immune systems have always been relatively weak, as pathogenic microbes were comparatively rare in their homeworld's biosphere. Furthermore, what few viruses and other microbes were native to their homeworld were often at least partly beneficial to them, giving them a symbiotic relationship with their environment. After living aboard the Migrant Fleet for generations, the quarians' immune systems have atrophied further still due to the years in the sterile environment of the Migrant Fleet. As such, quarians are given various vaccinations and immunizations to help ward off disease. However, they prefer the safety of their suits even in clean environments and are reluctant to remove them without a good reason.

A quarian who wishes to remove their suit must take antibiotics, immuno-boosters, herbal supplements, or the like in order to do so safely, and even then there are inherent risks. As a result, physical acts of affection are difficult for quarians, even for the purposes of reproduction. Ships in the Migrant Fleet often contain "clean rooms" where quarians can give birth or undergo medical procedures in relative safety, though there are always risks. The most intimate thing quarians can do is link their suit environments. However, doing so guarantees a quarian will get sick, although they will usually adapt over time.

Like turians, the quarians are a dextro-protein species of reverse chirality from humans and asari. The food of levo-protein races such as humans or asari is at best inedible and at worst poisonous, most likely triggering a dangerous allergic reaction. Quarians who want to taste something (other than the refined edible paste issued to all who leave on their Pilgrimage) can eat specially purified turian cuisine, though the typical quarian diet is vegan, as livestock were found to possess an inefficient resource-to-calorie ratio when stored on the Migrant Fleet.

Other than the oft-mentioned maladjusted immune systems, the quarians have surprisingly robust physiology. Grunt's tank imprints specifically deem several species soft and easy to kill, but not quarians. One extensively tortured quarian survives for a while without an enviro-suit before dying from his injuries. Another endures traveling through multiple racial environments without a suit, dealing with things like elcor high gravity and drell aridity before dying in the high-pressure volus zone after a considerable amount of time there.


The Geth War[]

The quarian homeworld in 2186

Hailing from the world of Rannoch, the quarians were always a technologically capable species. They created the geth around the late 1850s CE to be used as labourers and tools of war. The quarians kept their programming as limited as that of any VI, nothing close to an AI, remaining mindful of the Citadel Council's laws against artificial intelligence. But as the quarians gradually modified the geth to do more complex tasks, developing a sophisticated neural network, these changes altered the geth to such an extent that they became sentient. One day, a geth unit began asking its overseer questions about the nature of its existence. According to Legion, while this was not the first time a geth unit had asked if it had a soul, it was the first time doing so had caused fear.

Panicked, the quarian government ordered the immediate termination of all geth in the hopes of preventing a revolution. Many quarians opposed the termination of the geth, but were forced to give up or terminate their geth servants. After the quarian government declared martial law on Rannoch, those who sympathized with the geth were outnumbered, and an indeterminate number of them were either detained or killed. The quarian sympathizers have since been forgotten by their own people, though they are remembered by the geth themselves.

Not all quarians wanted the geth destroyed as centuries-old recordings of the geth show

The quarians severely underestimated the power and sophistication of the geth's neural network. The geth reacted to defend themselves, and the resulting confrontation erupted into a planetwide war. Billions of quarians died, and the survivors were eventually driven from their homeworld. The only reason quarians were able to escape was because after they had fled to a certain distance, the geth no longer recognized them as a threat and ceased pursuit.

After being refused aid by the Citadel Council, the quarians fled the system in what remained of their fleet. Shortly thereafter, the Council stripped the quarians of their embassy as punishment for their carelessness, though a treaty was agreed upon forbidding an attack on the geth in order to avoid provoking them. Ever since, the quarians have drifted from system to system, searching for resources to sustain the Migrant Fleet and also for a new world to colonize. They even retain hopes of someday reclaiming Rannoch from the geth.

Fight for the Homeworld[]

Zaal'Koris on the run from geth platforms on his homeworld

Prior to the Reaper invasion in 2186, the Special Projects arm of the Migrant Fleet developed a series of effective countermeasures against the geth, giving them a strategic edge in terms of military strength. The Admiralty Board voted in favor of launching an assault to retake Rannoch, and the quarians began arming all of the ships in their Civilian Fleet.

The quarians opened the war by launching precision strikes on four geth systems and driving them back to Tikkun, the quarian home system. The fleet also attacked a Dyson sphere that the geth had been building, the culmination of centuries of work intended to unite all geth into a single optimized network that would maximize their processing power. The destruction of the sphere rattled the geth, and they decided to accept upgrades from the Reapers to avoid destruction.

Upgraded with Reaper code, the geth's processing power increased dramatically, allowing them to neutralize the quarian countermeasures. The war shifted in their favor and the Migrant Fleet began to sustain heavy losses. The geth fleet trapped the quarians within the Tikkun system and pushed them in range of a powerful anti-ship cannon on Rannoch that destroyed several ships.

With Commander Shepard's help, the quarians counterattack a Geth Dreadnought and destroy a Destroyer-class Reaper embedded in a bunker on Rannoch's surface in order to cut off the Reaper signal emitting the upgrade code. With the signal gone, the geth break free from Reaper control and attempt to harness the Reaper upgrade program to strengthen themselves independently of the Reapers, while the Migrant Fleet takes the opportunity to launch a final assault against the geth.

Depending on Shepard's decisions, one of three outcomes occur: the geth download the upgrade and repel the Migrant Fleet's attack, destroying it completely and dooming the quarians to extinction; the quarians succeed in attacking, annihilating the geth and reclaiming Rannoch; or the quarians are stopped from attacking and reach a compromise with the geth that allows both races to agree to peacefully coexist. If the quarians survive, the Migrant Fleet joins the Allied forces in the battle for Earth.

Starting Over in Andromeda[]

Prior to the galaxy-wide war in 2186, a group of quarians set eyes on the distant Andromeda galaxy and collaborated with the Andromeda Initiative to realize the objective of settling there. Using information gathered by Shio'Leth vas Novarra from the Kholas Array, the Initiative was able to determine prime colonization sites in the outskirts of the galaxy.

In 2185 4 arks plus the flagship Nexus set sail for Andromeda, carrying mostly humans, asari, turians, salarians, and krogan. The quarian ark, Keelah Si'yah, has been delayed because a number of other races also booked passage aboard the vessel, creating technical challenges for accommodating the various racial environments. Carrying around 4,000 quarian souls out of its 20,000 capacity, Keelah Si'yah was able to launch in 2186, during the beginning of the Reaper onslaught on batarian worlds.

An interspecies plague develops aboard Keelah Si'yah while in transit due to an installed computer worm masking its presence and the ark's unique operating procedure of having support teams periodically thawing out of cryostasis for maintenance. When malfunctions aboard the ark forcibly defrost some passengers, even the quarians become susceptible - some suits have sustained microfractures during the long centuries of sleep, allowing the Fortinbras Plague to get in undetected. A cure is made against the pathogen although not before casualties quarian or otherwise pile up, allowing the survivors to sleep off the remaining 3 decades of projected travel time before arrival at Andromeda.

Much later, ark Hyperion receives a repeating transmission from the Keelah Si'yah, warning people to stay away. However, the signal's origin, and the ark's location, is unable to be determined at the moment.


Tali onboard the Normandy

The quarians' top priority is the survival and sustainability of the Migrant Fleet. Most of their laws and customs revolve around this goal. It is illegal for couples to have more than one child, so that the fleet can maintain zero population growth and avoid straining their limited resources. If the population begins to shrink, this rule is temporarily lifted, and incentives may be provided to encourage multiple births. Families are thus very small and close-knit. Homosexual relationships are not unheard of, however, as evidenced by Shio'Leth vas Novarra and his husband Viegle.

Because every quarian depends on his or her crewmates to survive, they are much more community-minded than individualistic species like the krogan. Loyalty, trust, and cooperation are highly prized qualities. Even in their ancient past they were a very emotional people, which the Protheans believed was a side-effect of their eco-symbiotic society.

Quarians enjoy storytelling as a means of escape from their often trying lives aboard the fleet, and are known to hold dancers in high esteem.

Young quarians are required to undertake a Pilgrimage outside the fleet in order to pass into full adulthood. The Pilgrimage is an opportunity for quarians to experience the world outside the Migrant Fleet, interact with other cultures, and learn to appreciate life among their own people. Their departure is a major event; the whole crew assembles to see them off, and they are given many gifts to aid them on their journey, along with immunity-boosting injections and advice on surviving in the outside. The young quarian cannot return to the flotilla until they have found something of value to bring back - whether information, money, or supplies. When they return, they do not go back to their birth ship, but instead select a new ship to join; this helps maintain genetic diversity by preventing intermarriage between close relatives. The quarian presents their gift to the captain of the new ship to prove they will not be a burden on the crew. Although the gift may be rejected if it is subpar, this is very rare, as most captains are eager to welcome a new shipmate on board. Having a large crew is a prestigious thing, as it means the captain has the financial and material means to provide for many people.

Conditions aboard most quarian ships are extremely cramped. It is not uncommon for all family members to share the same small living space, which in turn is in close proximity to many other families' quarters. These spaces are often uncomfortable and ill-designed for living in, having been reappropriated from other functions such as storage. Families decorate their individual dwellings with colorful quilts, which serve to muffle sound and also to make the environment more cozy. Quarians place low value on personal possessions, instead evaluating objects by their usefulness and bartering them for other items once they are no longer needed. Every ship has a designated trading deck where those looking to barter can gather to do business.

Shrouded in their suits 24/7, quarians have to compensate by being sociable

Quarians wear their environmental suits at all times, partly in case of a hull breach and partly in response to the lack of personal space aboard the flotilla. Because their suits make it hard to identify individuals on sight, quarians have developed the habit of exchanging names whenever they meet.

Over time, the environmental suits themselves have gained symbolic and cultural significance, and being fitted with their first suit is considered a rite of passage. After returning to the fleet after their pilgrimage, they may alter their suit to reflect their new status as adults. Linking suit environments is seen as the ultimate gesture of trust and affection. One of their lullabies, My Suit and Me, is dedicated to the protection provided by the suits.

Due to their history with the geth, quarians are reluctant to place complete trust in virtual or artificial intelligences, but they also show surprising compassion towards them and are far more likely than other species to treat them as living beings.

Quarians refer to commanding officers of any ships, quarian or non-quarian, as captain, regardless of rank. Their reasoning is that the CO's decisions always carry great weight on his/her own ship.

Prior to their exile, the quarians appear to have used a calendar that incorporated their lunar cycles. The geth reckoned the dates in terms of "creator years": creator year 2463 is roughly 327 years from 2185 CE, computing to about 1858 CE. Known months include Lun'shal and Fal'tash.


The Garden Plaza aboard the Rayya

The quarians have a very different economic system from the rest of the galaxy. While credits influence what is available in Citadel space, currency is non-existent in quarian society. Quarians value the little space they have above all else, so no unused items are kept to maximize space. When a quarian has an item they do not need, they place it in a public area, in what resembles a market. The items available are put into storage lockers, and those in need may simply take what they find. Since quarian society is based around honor and loyalty to their fellow quarians, there is rarely disagreement.

However, food and medicine are handled more strictly. The food coming from both the Liveships and from scout ships is put into a central stock and distributed carefully to individuals. Outgoing food is tracked carefully, so as not to put the Migrant Fleet at risk of food shortage, or worse, mass starvation. Medicine is also distributed carefully. However, since the quarians wear their enviro-suits everywhere, even when aboard the Migrant Fleet, they are at a very low risk of sickness. Controlling the flow of medicine also creates an emergency stockpile in case of a widespread outbreak, which is necessary since the quarian immune system is so weak.

Another means of resource income for the Fleet is from whatever system that the Migrant Fleet is passing through at the time; the quarians will strip-mine asteroids for resources with well-trained efficiency. Any other races with industrial or corporate interests in that system will often offer a "gift" of ships, food, or other supplies to encourage the Fleet to leave. Usually, the Admiralty Board accepts the gift, as the Migrant Fleet is in no position to decline resources. In addition, some ships may linger in orbit over inhabited worlds to sell refreshments, supplies, and various trinkets to the locals.


The quarians used to practice a form of ancestor worship. This involved taking a personality imprint from the individual and developing it into an interface similar to a VI. The quarians began experimenting with making these imprints more and more sophisticated, hopefully leading to the wisdom of their ancestors being preserved in an imprint that could be truly intelligent. However, the geth destroyed the quarians' ancestor databanks when they rebelled. Some quarians saw their subsequent exile as punishment for their hubris, but most accept that the geth rebellion was a mistake, not a punishment.

However, respect for their ancestors is still prevalent in quarian society. Admiral Shala'Raan vas Tonbay opens an Admiralty Board proceeding offering thanks to their ancestors, who saved them from the geth by founding the Migrant Fleet.

Tali sometimes exclaims "Keelah!" when shocked, which is a shortening of a phrase used by many quarians, "Keelah se'lai", that Tali translates as, "By the home world I hope to see someday." The expression is often used as a benediction or religious oath.


Now that the quarians are reduced to a small, insular population, they have one common language known as Khelish. Words from the language listed below are taken from intra-quarian conversation.

  • bosh'tet — curse/insult, likely being relative to "son-of-a-bitch" or "bastard".
  • esu se'lai — likely a form of "goodbye"
  • geth — "Servant of the People"
  • Mered'vai Rannoch — "Forget Rannoch"
  • nar [ship-name] — child of
  • nedas — nowhere
  • keelah — "By the homeworld"
  • keelah se'lai — "By the homeworld I hope to see one day."
  • keelah si'yah — "By the homeworld I hope to find one day."
  • ke'sed (or kes'ed) — offspring of the qorach animal, figuratively means "naive" when used on people
  • Pallu'Kaziel — "Nevertheless, Justice Comes"
  • Rannoch — "walled garden"
  • tasi — no-one
  • tiral azhana — "handful of water"
  • vas [ship-name] — crew of
  • von — "one who has a weak bladder"

Quarian names are composed of four parts—the quarian's given name and clan name separated by an apostrophe, the title ("nar" means "child of", referring to their birth ship, while "vas", adopted after the quarian has completed their Pilgrimage and joined a ship, means "crew of") and the name of their vessel.

When Tali first met Shepard, for instance, she was going by the name of her birth ship (the Rayya) because at that point she had not yet completed her Pilgrimage and was thus not yet able to join a quarian crew. Later, though, she became known as "Tali'Zorah vas Neema", indicating that she had completed her Pilgrimage and was welcome to join the Neema.

On occasion quarians may impose their naming conventions on other races. Commander Shepard, for example, may be referred to as "Shepard vas Normandy" if the Commander chooses to interact with the quarians on their home territory.

In certain formal situations, quarians appear to use both their adult ship and childhood ship. Tali'Zorah identifies herself as "Tali'Zorah vas Neema nar Rayya" during docking procedures following summons to the Migrant Fleet regarding accusations of treason.


The Migrant Fleet[]

Main article: Migrant Fleet

There are roughly 17 million quarians on the Migrant Fleet (also called the Flotilla). It is technically still under martial law but is now governed by bodies such as the Admiralty Board and the democratically-elected Conclave, though ship captains and onboard civilian councils tend to address most issues "in-house" before it gets that far. Quarians are divided into several clans that can be spread across several ships, or restricted to one.

Nedas Movement[]

Most quarians are united in the dream of someday retaking Rannoch from the geth. A clandestine few believe otherwise, coalesced into the Nedas Movement, and advocated simply starting over on another world.

Adherents conclude that the obsession with the homeworld has doomed the quarians into an eternal hardscrabble homelessness, without future or past, or even a voice in galactic politics, since nobody listens to people without a planet. Organized in cells, initiation into the group entails weeks of preparation for sharing environments and tattooing the motto of the movement, Mered'vai Rannoch ("forget Rannoch"), into their biceps using the same sterilized holo-gun.

Believers in the movement get their wish when they hear about the Andromeda Initiative. Members including the Nedas leadership signed up for the goal of having a planet to call their own someday, even if it's in another galaxy.


Quarian wielding a pistol

Although the Conclave establishes civil law much as any planet-based democracy, enforcement and trials are more unique. After the flight from the geth, there were few constables to police the millions of civilians aboard the Fleet, so the navy parceled out marine squads to maintain order and enforce the law. Today, quarian marines have evolved training and tactics akin to civilian police, but remain adept at combat in the confined spaces of a starship, and fully under the command of the military.

Once taken into custody, the accused is brought before the ship's captain for judgment. While the ship's council may make recommendations, tradition holds that the captain has absolute authority in matters of discipline.

Most are lenient, assigning additional or more odious maintenance tasks aboard the ship. Persistent recidivists are "accidentally" left on the next habitable world. This practice of abandoning criminals on other people's planets is a point of friction between the quarians and the systems they pass through. Captains rarely have another choice; with space and resources at a premium, supporting a non-productive prison population is not an option. Crimes that carry exile as a penalty include murder, treason, repeated violent episodes, and sabotage against vessels, food stores or the Liveships themselves. Quarians also practice capital punishment; as Tali tells Commander Shepard, mutiny or hijacking starships is punished with execution. Exile is generally the preferred punishment, as any offspring an exile may have are welcomed back to the Fleet.

Cases involving treason are particularly rare, as quarians are only accused of treason if their actions conceivably harmed the entire Flotilla, not just a single ship. The accused are given a hearing with the members of the Admiralty Board acting as judges. Admirals who have a close relationship or personal history with the accused are required to recused themselves from voting in the judgement, although they can still moderate and ensure the rules are followed. If the accused is convicted, they are sentenced to exile. If the treasonous act is deemed only a tragic mistake in judgment, the guilty party might be granted a small ship and supplies for their exile. In extreme cases where the convicted's crimes are very severe, their names could even be stricken from the manifests of every ship on which they had served. Prior to 2185, an engineer named Anora'Vanya vas Selani was the last quarian tried for treason. She had given sensitive defense schematics to a group of batarians whom had been contracted to upgrade the Flotilla's defense systems, but the batarians shared the schematics with a pirate gang, jeopardizing the Flotilla's security. Before she could be convicted, Anora'Vanya destroyed the pirate gang in a suicide attack, and was posthumously pardoned by Admiralty Board.

Galactic Relations[]

Quarians beginning a meeting with a benediction to their homeworld

The Systems Alliance has no political relations with the quarians because the Migrant Fleet has not yet passed through any human-controlled area of space.

There is, however, some form of human-quarian political contact. The family of Darla vas Hyperion were ambassadors to the Flotilla and have accustomed themselves to the quarian style of living.

Other species tend to look down on the quarians for several reasons, the foremost of which being their supposed 'unleashing' of the geth upon the galaxy. This act led to the quarians' losing their embassy on the Citadel. Quarians are often viewed as beggars and thieves. Tali says glumly that when she arrived on the Citadel, C-Sec hauled her in for a long interview before they let her wander around.

Because of the Flotilla's limited resources, quarians strip-mine the systems they pass through, which often puts them at odds with any species currently settled there. The Migrant Fleet also tends to drop off criminals on planets it passes, because the quarians cannot support a non-productive prison population—they simply lack the resources. However, life on the Migrant Fleet means quarians have unique skills. As Tali demonstrates, the quarians have developed an imperfect technique for recovering data from geth memory cores. They are masters at maintaining and converting technology, especially ship parts, and they are also expert miners because the Fleet requires huge amounts of fuel. They are able to repair what most species would melt down. This proficiency means corporations sometimes quietly hire quarians "on the side" if the Migrant Fleet is nearby, replacing existing workers, much to their annoyance.

This unpopularity, and the fact their entire species travels and works as one, makes most quarians quite insular, caring only about the continued survival of the Migrant Fleet. Their nomadic life and exclusion from the Citadel mean that the concerns of the Citadel races don't particularly interest or impress them.


See also: Migrant Fleet Marines

In the early years, many quarian freighters were armed and used as irregular "privateers." Civilian ships still show a strong preference for armament, making them unpopular targets for pirates. Indeed, it is mentioned that almost all ships in the Migrant Fleet carry ship-to-ship armaments of some sort and to varying degrees. Though they have rebuilt their military, there are only a few hundred dedicated warships to protect the tens of thousands of civilian ships. Even so, the quarian navy patrols vigilantly and with extreme prejudice: if the intent of any approaching ship can't be ascertained, quarian vessels shoot to kill.

For this reason, young quarians on their Pilgrimage are given code phrases to repeat upon their return, as they often arrive back in vessels they have bought or scavenged which are unknown to the Flotilla. One phrase denotes a successful Pilgrimage and the quarian navy will permit them to rejoin the Fleet; the other alerts the navy that the quarian is returning under duress, and their ship will be immediately destroyed.

The quarian military utilizes weapons specifically designed to counter synthetics such as the geth. The Adas Anti-Synthetic Rifle is an electrical weapon optimized for medium and long-range firefights. Other weapons include the Arc Pistol, based on the Arc Projector, and the Reegar Carbine, a more powerful iteration of the Arc Pistol named for the famed quarian Reegar family.

Notable Quarians[]

Former Quarian Worlds[]


  • The quarian history of creating the geth, then being ousted from their homeworld by their creations, resembles the plot of the "re-imagined" Battlestar Galactica. Both civilizations were destroyed by their synthetic creations that were initially built as tools. Both civilizations survived in roving fleets made up of whatever ships they managed to acquire or brought with them during their escape. The fleets survive on whatever resources and materials they can scavenge while moving from place to place.
  • The clothing worn by female quarians, specifically their hoods, was inspired by traditional iconic images of the Virgin Mary. This was originally done to fit the "virginal" and "almost motherly" quality which the developers saw in Tali'Zorah nar Rayya.
  • It is mentioned in The Art of the Mass Effect Universe that Lloyd's building in London served as the inspiration for quarian architecture. It is also mentioned that the quarians' environment suits are meant to evoke the geth: only after finalising the geth design in Mass Effect did it become easier to narrow down Tali's appearance.
    • According to Matt Rhodes, when working on the first game he imagined quarians as a pale, hairless race with black eyes. The canonical appearance was also designed by him, which is close to the final game but features large purple irises and a similar pattern of skin markings. [1]
  • A quarian helmet is available for download on the Xbox Avatar Marketplace for 160 MS points.
  • Quarians are a playable race in Mass Effect 3's cooperative multiplayer mode.
  • The phrase keelah se'lai originally meant "blessed be" according to former BioWare writer Chris L'Etoile before it mutated into its present form "By the homeworld I hope to see one day."
  • Issue Two of Mass Effect: Homeworlds shows quarian blood as being purple. This contradicts the main series, where quarian blood is shown as being red, as seen during the missions on Freedom's Progress, Haestrom, Rannoch, and Earth.