Xeno Underground

Xenosaga Episode III Weapons Database

27-Series Asura

A next-generation combat Realian created by Kevin Winnicot, based on data taken from Febronia, the transgenic type Realian archetype.

Their ability to judge and adapt to situations is far greater than previous combat Realians; they are designed to be able to handle any given situation using their own judgment. They are difficult to calibrate, however, and are still in the testing phase.

During the Miltian Conflict, they were placed on the front lines of battle with insufficient calibration; as a result, they went out of control. During their rampage, they killed and injured many without distinguishing friend from foe.

Attract Inhibitor

The Zohar Emulators, created by Professor Joachim Mizrahi, have many varied functions that utilize the extensive energies of the Zohar.

As with the Original Zohar, however, it has been confirmed that a space-time anomaly appears when they go out of control.

The attract inhibitor prevents this loss of control and inhibits the activity of the Zohar Emulators.

In biochemistry, an “inhibitor” is a substance that blocks enzymatic functions.


A device used to amplify the Hilbert Effect generated by the anti-Gnosis scanning Realians known as the 100-Series Observational Units. The radius of maximum coverage is about 100 kilometers{~62 miles}.

All Federation military warships built after T.C. 4766 have them installed as part of their standard equipment. However, since the weight of the device runs anywhere from ten to several hundred tons, only large vessels are able to have them on board.

KOS-MOS is an exception, however; even without the use of an amplifier, she can cause Gnosis within several hundred astronomical units to take physical form.


A newly-constructed Vector ship with the Rhine Maiden on board. The third ship in the line of Woglinde-class cruisers.


A battleship assigned to the Galaxy Federation 117th Marine Division. Built by Vector and loaned to the Federation Marine Corps as the first anti-Gnosis battleship. The hull is about 1000 meters{~3280 feet} long from stem to stern.

It was deployed rapidly for a public test run, so only the command block and propulsion unit had been equipped; 80% of its components have yet to be installed.

Since this is a test run, the emblems and insignia of Federation Marine Corps are not present; only the Vector Industries logo has been stenciled onto the side of the ship.

Its unique structure is split into a top and bottom section. The top section is the command block, and the bottom section was hastily assembled from generic materials for the test run of the new logical drive.

Originally, it was planned for the ship to be equipped with 100-Series Observational Units and 100-Series amplifier systems, but they could not be deployed in time for the test run. A.G.W.S. Units only barely managed to be assigned.

In order to compensate for the lack of equipment, Vector loaned their prototype anti-Gnosis battle android.

{P.S.: It was destroyed.}

Woglinde II

A newly-constructed Vector ship with the Rhine Maiden on board. The second ship in the line of Woglinde-class cruisers.


Short for “Assault Maneuver Weapon System.”

Pronounced like “aims.” A term used for all humanoid assault weapons that work in conjunction with a mothership or escort craft.

Due to lack of anti-Gnosis equipment, A.M.W.S.s are superior to A.G.W.S.s in both cost-effectiveness and general-purpose functionality, and are widely used by the Federation government, autonomous states, the Immigrant Fleet, and other forces.

Within the U-TIC Organization, Richard’s Pilum and Hermann’s Scutum are both A.M.W.S.s. The unit Jin was piloting during the Miltian Conflict was also an A.M.W.S.

A.M.W.S. [Jin's]

An A.M.W.S. Based on Hyams’ VRA-1800B model and specially tuned fro the Federation Intelligence Bureau. Piloted by Jin Uzuki during the Miltian descent operation.

At Captain Uzuki’s request, a custom sword had been equipped as a close-combat weapon.

A.M.W.S. [Doctus's]

An A.M.W.S. customized by Scientia for Doctus. Its codename is “Astraea.”

However, its concept is closer to that of an E.S. than that of an A.M.W.S. How Scientia learned the design data of E.S. craft is unknown.

A.M.W.S. Scutum

An A.M.W.S. made by Hyams Heavy Industries. The name “Scutum” means “shield” in Latin. It has been specially tuned for the use of Ormus Inquisitors, and it piloted by Hermann.

It was destroyed in the battle with Shion’s party at the Ormus Stronghold. {XS2}

A.M.W.S. Pilum

An A.M.W.S. made by Hyams Heavy Industries. The name “Pilum” means “javelin” in Latin. It has been specially tune for use of Ormus Inquisitors, and is piloted by Richard.

At the Ormus Stronghold, the Pilum displayed its power by transferring the main cannons of the Naglfar and destroying the inner walls of the stronghold, but it was destroyed by the E.S. craft{s} piloted by Shion’s party. {XS2}


Short for “Multiple Weapons System.”

A multifunctional portable weapons system designed and built by Shion’s junior colleague, Miyuki. Various types of weapons—such as anti-Gnosis beam launchers, knuckles, taser rods, and more—are contained within.

It also has a built-in shield that utilizes spatial phase shifting, and thus provides a high level of defensive capability in addition to its offensive capability.

It also has a built-in provisional logical drive to cancel its own weight and increase the impact of its attack; with this design, even female users can easily use the weapon. {Wow, XS, way to be sexist.}

Revised M.W.S.

This is the revised model of the multifunctional portable weapons system designed and built by Miyuki. She took the original M.W.S. Which Shion was using and further customized it. Its defensive capabilities have been especially enhanced; the output of its phase-space shield is triple that of the previous model.

Instead of the bulky design of the previous M.W.S., it has been redesigned to be smart, slim, and compact, in order to fit Shion’s style of martial-arts combat.


The generic term for an autonomous mobile combat weapon that does not require a pilot. Because it’s unmanned, it is not limited by G-force constraints, and its mobility and speed are greater than that of a manned unit. Its combat patterns are very simple, however, and its actions are easily predictable, making it no great threat to a manned unit under the control of a seasoned pilot.


In physics, a condenser is a device that charges a conductor through electrostatic induction. Here, “condenser” refers to the device used to store the energy necessary to power KOS-MOS.

There are two types of condenser{s}: the test-type and the combat model. The latter is being developed by Vector Industries Second R&D Division on Second Miltia.


Literally, this means a device that creates power and electricity; here, however, it refers to the main engine or power generator of ships such as the Elsa or the Woglinde.

Tactical Assault Ship Merkabah

An artifact of God, written of in the Y-Data and resurrected by Dmitri Yuriev as the mothership for Omega, a weapon created to combat Ormus.

Its length exceed 100 kilometers{~62 miles}, and its destructive power could easily destroy an entire planet. All of it s active weaponry utilizes the excess energy generated by Merkabah’s operation; from this, we can conclude it was most likely originally designed as a “support device,” and not as a solitary weapon.

Proto Merkabah, this ship’s prototype, was used by Joachim Mizrahi as the plant for MOMO’s creation.

Phase Transfer Cannon

A weapon that destroys everything in the vicinity by created a phase transfer. It can potentially even destroy a star.

Normally, the bulk of the cannon has been reduced to Planck scale, but by receiving a phase transfer system activation key from a PT cartridge, the bulk of the cannon can materialize into real space.

What appears to be a handgun is actually part of the phase transfer cannon; once the system has been activated, it serves as both a trigger and laser locking device. Because KOS-MOS fired the weapon while limited the phase transfer mass, the spatial anomaly increased in size, causing the Song of Nephilim to appear. {XS1}

Target Drone

Unmanned craft treated as enemy units within combat simulations. Nowadays, it is rare to train using actual physical combat; mock combat in a combat-simulation program running within the U.M.N. is more common. Targets emulating enemy units within these programs are called target drones.

The kind of target drone differs according to the enemy they are emulating; generally, they take the form of the A.M.W.S. units commonly used by many forces.

G-type target drones are programs that emulate the form of Gnosis as well as their behavior patterns and were used during KOS-MOS’s activation experiment. H-type drones are used for combat situations involving humans, and M-type for situations involving mechanical enemies.

Secondary Weapons System

KOS-MOS’s main combat equipment; this refers to her current armament, frame material, and substitute armor materials.

The Secondary Weapons System made experimental use of a PT cartridge-type phase transfer cannon; the limited unit size, however, meant that the places and situations in which it could be used were restricted. For this reason, the Tertiary Weapons System, with a phase transfer unit installed as standard equipment, was produced on Second Miltia.

Tertiary Weapons System

KOS-MOS’s optional weaponry, consisting of two phase transfer cannons, one on each shoulder. It was designed by Kevin while he was still alive and built at Vector Second R&D Division on Second Miltia.

Because the phase transfer cannon units are made to be as compact as possible, the recoil when they are fired is very high; the Version 2 KOS-MOS [Combat Frame] is required in order to fire these weapons.

The PT cartridge-type phase transfer cannon used by KOS-MOS when the Song of Nephilim appeared had been created as a testbed for these cannons. When the cannons are fired, a cooling field in the shape of glowing wings is created behind the unit.

Anti-U-DO Shift

Even amongst the URTVs created to counter U-DO, Jr.’s anti-U-DO waveforms are especially strong.

Once Jr. awakens as an anti-U-DO entity, he transforms into what’s known as Red Dragon mode. This destructive impulse comes from Jr. losing self-control out of sheer anger; once he transforms into this mode, he cannot restrain his power. Jr. fears this power, as it could possibly destroy all that he holds dear.

The details of the other URTVs’ anti-U-DO shifts are still unrevealed. Gaignun and Citrine have a power which is closely related to Red Dragon mode, but the facts behind the situation are unknown.

Mobile Dinah Interface

An optional weapon designed to improve KOS-MOS’s mobility. On the outside, it looks like a monobike, but it’s actually a versatile mobile device capable of air and space flight, as well as transfer flight.

It also doubles as a simple maintenance box and functions as a main processor and weapons module for the E.S. Dinah.

PT Cartridge

A cartridge that acts as a key to activate a phase trasnfer cannon.

A substance that activates the primary phase shift and releases the latent heat energy into a vacuum is normally used for the PT cartridge.

VX Series

A.G.W.S.s manufactured by Vector. Though a consumer-level product, its specs exceed those of the military-use AG Series. There are several VX Series unit deployed on the Elsa, as well.


An Ormus mobile battleship more than 8000 meters{~26467 feet} in length. The flagship of the Inquisitor fleet.

The word “prodigium” means “miracle.”

Point Man

When an incident or accident occurs within virtual space, this group leads the investigation by gathering information regarding conditions within virtual space or the enemy’s situation.

They work efficiently to solve the case by finding the enemy as quickly as possible and relaying information regarding the enemy’s position to primary allied forces.


A program that recognizes trespassers automatically and expels them from virtual space.

Destruction by this program implies that the invader’s mind is being destroyed as well; it has been confirmed that the real-world mental failure of the trespasser occurs when this takes place.

The program’s name is taken from the macrophage cell that ingests bacteria{?} which have entered a human body.


An acronym for “U-DO Retro Virus.” Weapons equipped with anti-U-DO waveforms and designed to annihilate U-DO.

They are organic weapons (designer children) based on the genetic information of Dmitri Yuriev, who planned the project. In order to create an anti-U-DO waveform, multiple URTVs must link up with the link master. {Rubedo}

A total of 669 units were created, each holding a serial number from 001 to 669. During the third descent operation of the Miltian Conflict, serial numbers in the 500s and 600s were sent in.

According to records, both male and female URTVs existed; however, the female URTVs were more unstable than male ones, and most were disposed of during training. {Proof? See Citrine.}

Intended for deployment as weapons, URTVs were designed to be well-balanced, both emotionally and in their ability. However, the existence of several high-spec individuals far exceeding standard parameters has been confirmed. These are called variant URTVs, and they are likely to have different mission assignments than standards URTVs.

Infected URTV

A standard URTV which has come into contact with U-DO and suffered a mental breakdown.

Because its mind has been destroyed, it cannot make decisions normally and simply attacks repeatedly and reflexively.

URTV Unit Number 623

Standard URTV number 623 was assigned with Rubedo and the others on the mission to dive into Sakura’s subconscious domain through the U.M.N. In order to cure her sensory impairment congenital disorder.

However, the visualization of Sakura’s fear as U-DO waveforms caused many standard URTVs to be transformed into infected URTVs.

Number 623 manged to avoid the worst-case scenario, but he received a near-death injury from an enraged Albedo in retaliation for the other infected standard URTVs having attacked and injured Rubedo.

URTV Unit Number 666

The 666th variant URTV to be born at the Yuriev Institute. Because he was born with red hair, he was named Rubedo, a name taken from C.G. Jung’s “Psychology and Alchemy”, in which “rubedo” refers to the process of a substance turning red. He was born a conjoined twin, his bark attached to unit number 667, Albedo.

Rubedo was the first variant URTV to be born at the Institute and possessed a much stronger anti-U-DO waveform than standard URTVs. He united the URTVs as a leader figure.

As children, his younger brother Albedo never left his side. Rubedo watched over him with kindness at times and discipline at others. However, their relationship turned disastrous when the URTV force faced U-DO, and Rubedo foresaw Miltia and the URTVs’ future.

Understanding everything, Rubedo cut off the mental link between the URTVs, feareful that his existence would be erased. As a result, the standard URTVs and Albedo became infected by U-DO. To this day, Rubedo is tormented by guilt for having cut off the mental link.

{See Jr. for more details.}

URTV Unit Number 667

The 667th variant URTV to be born at the Yuriev Institute. Because he was born with white hair, he was named Albedo, a name taken from C.G. Jung’s “Psychology and Alchemy”, in which “albedo” refers to the process of a substance turning white.

He was born attached at the back to unit number 666, Rubedo. These type of twins are called conjoined twins, but conjoined twins created by artificial insemination are extremely rare. When they were separated, their abilities were shifted in opposite directions, but Rubedo and Albedo’s ability to stop or accelerate cell replication are fundamentally the same.

Rubedo was born with the ability to stop the cell aging process, but he was not immortal. Albedo was born with the ability to accelerate cell replication to amazing speeds; even if his head or heart were completely destroyed, it would always be regenerated. Albedo was not aware that Rubedo and Nigredo did, of course, not share this ability. When he found out, he was greatly shocked to learn that he was the only one to have an immortal existence.

This special ability is activated not by a control of the cells of one’s own body, but by accessing the structure of the U.M.N. itself.

Albedo’s mental state had been unstable from the start, but it has been even more unstable ever since the day he learned that he could not die. To Albedo, this world was nothing but a painful prison in which he would have to continue living even if his loved ones were to die. His greatest fear was losing his other self, Rubedo.

And when Rubedo released his hand, cutting off the mental link, Albedo came into contact with U-DO, and finally stepped past the point of no return.

URTV Unit Number 668

The 668th variant to be born at the Yuriev Institute. Citrine’s URTV identification number.

{Hahah, shortest entry yet!}

URTV Unit Number 669

The 669th variant URTV to be born at the Yuriev Institute. Because he was born with black hair, he was named Nigredo, a name taken from C.G. Jung’s “Psychology and Alchemy”, in which “nigredo” refers to the process of a substance turning black. He was the last of the 669 URTV units to be created, and possesses far stronger mental waves and mind-control ability than standard URTVs, as well as the ability to repel U-DO waveforms.

Even as a child, he was calm and mature. He often spent time with Albedo and Rubedo; however, because of their strong connection, he sometimes felt left out.

Nigredo was assigned two special missions. One was to prevent the Red Dragon from going out of control and to bring it down if necessary. This mission was also assigned to URTV unit number 668 Citrine. The other was a secret mission closely related to his father, Yuriev.

However, Nigredo abandoned this mission and shot Yuriev to death. The details of this incident are still unknown.

Standard URTV

Of the 669 URTV units created at the Yuriev Institute, unit number 001 through 665 are considered standard URTV units.

Since the URTVs are based on Dmitri Yuriev’s genetic information, the standards unit have the same hair color, face, and body types as Yuriev. They almost completely lack a sense of self and individuality, unlike variant URTVs. Also, they possess weak anti-U-DO waveforms and are easily affected by it.

The phenomenon of URTVs transforming into infected URTVs was confirmed within Sakura’s subconscious domain. The visualization of Sakura’s fear as U-DO waveforms caused standard URTVs to unexpectedly become infected, but Rubedo and the other variant URTVs were unaffected.

Many standard URTVs look with envy and malice upon the variant URTVs, who were born with strong anti-U-DO waveforms and special abilities and received special treatment.

Variant URTV

Of the URTVs created at the Yuriev Institute, the four surviving units—URTV unit number 666, URTV unit number 667, URTV unit number 668, and URTV unit number 669—are known as variant URTVs.

Due to induced mutations, they were born with special abilities; they have exponentially more powerful U-DO anti-existence waveforms and mental waves.

The hair color of each is unique, as well, and they were named after these colors. Their named were taken from C.G. Jung’s psychological terms for “reddening,” “whitening,” “yellowing,” and “blackening” processes.

Other URTVs are called standard URTVs. They lack individuality and possess much weaker anti-U-DO waveforms.

Rhine Maiden

A Vector-developed specialized anti-Gnosis weapon installed on board the Dämmerung, as well as the three Woglinde-class cruisers, Wellgunde, Floβhilde, and the Woglinde II. When these ships attach in unison, the power of the weapon is showcased to its fullest.

The ship Woglinde was most likely loaned to the Federation Army in order to collect data regarding the Rhine Maiden.


A labor Auto-Tech that was specially tuned by Tethlla Magus for mining in the Dabrye Mine.

After Tethlla’s death, his daughter Mai re-tuned the Auto-Tech so that it could equip firearms. After being tuned, Leupold no longer resembles a labor Auto-Tech and its weaponry exceeds even that of military-use heavy A.M.W.S.s.

Logical Drive

A new type of spaceship propulsion that replaces the traditional system of reactionary propulsion by reconfiguring the spatial phase around the direction of travel.

It takes substantial energy to operate, but since the device itself is relatively easy to miniaturize, the system is used by manned units equipped with transfer-type generators, such as A.G.W.S.s.

Logical Drive Pod

The name of an expansion drive used mainly by small mobile weapons without independent flight capability or by small spaceships to perform a gate jump.

There is no uniform standard; instead, there are various types suited for different uses and situations, such as the one used by the E.S. Asher during the Miltian descent operation, and the E.S. Dinah’s flight unit.