Blob Daro'Xen vas Moreh

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.

Daro'Xen possesses a clinical intellect, apparently having performed surgery on her childhood toys without any sort of guilt or attachments on the matter.

After Tali'Zorah vas Neema is accused of treason against the quarian people, Admiral Xen is one of the three admirals present as judges, along with fellow admirals Zaal'Koris vas Qwib Qwib and Han'Gerrel vas Neema. She is described by Han'Gerrel as being on the fence regarding Tali's treason and refers to the trial as "a farce born of fear." Though she has no interest in the trial, she knows that its subtle purpose is to stir the Migrant Fleet to reclaim their homeworld.

Xen describes Zaal'Koris as a coward and Han'Gerrel as "an aging warship". She sees Han'Gerrel's plans for war with the geth as foolish and self-destructive, but she has no qualms about experimenting on active geth. Her reasoning is that they are just machines which were created with the sole purpose of serving their creators.

If Commander Shepard brought Legion along to the Migrant Fleet, Xen finds it fascinating, originally assuming it to be a simple mech built with a geth shell, more so that it chose a name. She wistfully mutters about the things she could learn "under slightly different circumstances", to which Legion responds that it is not available for experimentation. Furthermore, Legion describes her plans for controlling the geth as "unsound" — a statement with which Tali'Zorah agrees.

After the conclusion of Tali's trial, Admiral Xen sends a message to Shepard's terminal that she did some searching of her own aboard the Alarei. She cryptically states that had Shepard presented the results of Rael'Zorah's research, humanity would've reaped the benefits. Instead, they "will watch from a distance as the quarian people reclaim not just their homeworld, but the largest synthetic army in the galaxy."

If Tali's father is outed during the trial, Xen (if spoken to) chastises Shepard for revealing the nature of Rael's work in public. In this case, it is likely the research will be purged, or at least be too politically volatile for her to take advantage of.

Admiral Xen's corps of research and development eventually create a means to cause massive white-noise jamming against the highly precise geth ladar scanning systems, giving the quarian fleet a major advantage in any attempt to wage war against the geth. Upon this revelation, the Admiralty votes to go to war, with Admiral Koris and possibly Tali dissenting (if she was exonerated in her trial and subsequently promoted to her father's vacant Admiral office). Xen leads the Special Projects group during the war.

If Tali is absent, Xen provides assistance to Shepard during their mission to disable a geth dreadnought. Unlike Tali, she doesn't fight through the ship, instead advancing to the operations center when Shepard has cleared the way and providing electronic support, later leaving with them in a geth fighter.

Xen takes pride in her technological contributions that initially drove the geth back, preferring the present war over Raan's bloodless caution or Koris's geth sympathies, although Reaper involvement turned the tables on her race. Nevertheless, she continues to create anti-synthetic countermeasures like the Arc Pistol and personally gives a prototype to Shepard aboard the dreadnought if Tali isn't around.

Shepard's squadmates have differing opinions on the weapon, although Xen gives her own in two cases. If EDI points out the illegality of polonium rounds against organics (which is roughly analogous to the Arc Pistol's effects against synthetics), Xen quips it's "fortunate" the prohibition doesn't apply against synthetics. If Liara comments that she knows people willing to pay handsomely for the weapon's design, Xen replies she's open for offers.

After the mission's completion, Admiral Xen expresses interest in dissecting Legion (or the Geth VI if Legion is unavailable). Shepard can emphatically discourage against it and cut off Xen before she voices her views on potential scientific benefits.

In the middle of the operation to reclaim Rannoch, Xen gets into an argument over inter-ship comms with Tali over ship operations. Tali wants Xen's ships to do search and rescue ops for escape pods, while Xen wants to continue salvage operations on the destroyed Geth dreadnought, asserting the need to understand geth technology.

Admiral Xen later briefs Shepard on the rescue mission for Admiral Koris, noting that the Civilian Fleet is in danger of breaking up without their leader.

If the geth fighter squadrons attacking the liveships have been dealt with, Xen offers her expertise in dealing with other geth servers. Shepard suggests asking Legion/Geth VI but Xen claims the geth only says, "No data available" whenever she inquires. She then asks how the server's platoon of Geth Primes cooperated with the Commander. Upon hearing they volunteered, Xen reminds Shepard that she could "examine" these geth to confirm their allegiance.

Admiral Xen creates a laser marking technology that can cut through the geth jamming signals, which essentially is the Sync Laser. This technology proves critical to Shepard's team during the assault on the Reaper base on Rannoch.

Should Xen survive the resolution of the geth/quarian war, she will be sent to the Crucible to help with development and construction. She is described as being dissatisfied with the device by Admiral Shala'Raan vas Tonbay and uses her brilliant scientific and technical skills to assist with the construction. Also, if Shepard supported Xen over Tali during their argument regarding escape pods, Xen is able to salvage useful materials for the war effort.

Daro'Xen vas Moreh now weighs 300 kg aka 661 pounds, she is a very obese fat blob. Most of her fat is of course in her ass, hips, and waist with belly, in addition she has enough folds of fat on her back, her bingo wings are so fat that they are just bags filled with blubber, and as a result she has very big fat boobs that hang under their own weight.

She barely remains mobile, but still, for the sake of decency, tries to walk on her own two feet for some distance until she gets out of breath (2-3 meters), after which her drones immediately pick her up and take her to the place where she indicates. Her sex life is minimal considering such weight, she probably pleases herself with the help of drones. Although deep down she is not against having a romance with someone who finds her attractive.

Now she is powerful and rather cold, she is responsible for working with the geth and their improvements and in addition with negotiations with them to avoid another riot or misunderstanding.

She is a woman of age who is somewhat tired of her life, well and of her weight too, she tried to lose weight, but in vain, she rather accepted herself as such and for the sake of decency tries to somehow restrain her appetites (although in the end she still pampers herself)