|Daro'Xen vas Moreh|
|Mass Effect 2|
Mass Effect 3
Mass Effect 2 Edit
After Tali'Zorah vas Neema is accused of treason against the quarian people, Admiral Daro'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. She reveals that she wishes to return the geth to the control of their rightful masters, the quarians who originally created them. If Legion is in the party, Xen finds it fascinating, originally assuming it to be a simple mech built with a geth shell, more so that it chose a name, stating wistfully, "the things I could learn under slightly different circumstances", to which Legion responds, "this platform is not available for experimentation". Furthermore, Legion responds to her plans for controlling the geth by describing them as "unsound" — a statement with which Tali'Zorah agrees.
After Tali's trial is complete, Admiral Xen sends a message to Commander 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) will chastise 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.
Mass Effect 3 Edit
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 not present, Xen will provide assistance to Shepard during their mission to disable a geth Dreadnought. Unlike Tali, she will not 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. After the mission is completed, Admiral Xen expresses interest in dissecting Legion (or the Geth VI if Legion is unavailable), to which Shepard can discourage.
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, mentioning that the Civilian Fleet is in danger of breaking up without their leader.
After dealing with the geth fighter squadrons attacking the liveships, Xen will offer her expertise in dealing with other geth servers. Shepard suggests asking Legion but Xen states that 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.
- Apparently, Daro'Xen performed surgery on her childhood toys, much to Tali's disgust.
- Claudia Black, who voices Daro'Xen vas Moreh and Matriarch Aethyta, also voiced the character Morrigan in Dragon Age: Origins, another BioWare game.
- At some point before the events of Mass Effect 3, she created the Arc Pistol, a scaled down version of the Arc Projector.