|“|| Humans are really not that strong... We hurt others, we lie to ourselves, we hate, we blame others, we regret, but, even if we are weak, and even if it is our fate to disappear entirely, I think the will to change the future is still an important one. We must try to change things around us, little by little. Even if it is one step at a time and even if everything is already pre-determined, it’s not something for us to be sad about. No. On the contrary, the future is overflowing with hope. And we have infinite paths to choose from.
Shion Uzuki is the main protagonist of the Xenosaga series. Shion is a Vector Industries computer scientist (but quits by Episode III) who becomes involved with a conspiracy related to the Zohar. Shion helped build KOS-MOS to combat the Gnosis. It is eventually revealed that Shion is the Maiden of Mary Magdalene, the partner of Jesus Christ, and KOS-MOS is the prototype vessel for Mary Magdalene's spirit.
Shion always appears cheerful and happy, though as the series progresses, she becomes ruder toward people, especially Miyuki Itsumi. Whenever she is feeling unwell and is asked about it, she tends to reply, "It's nothing." Her friends and those she care about are very important to her, though she selfishly chose her love for Kevin Winnicot over them before realizing he was a monster. She also seems oblivious to the fact that Allen Ridgeley is in love with her, and is somewhat ditzy.
She is also very inquisitive and enjoys testing KOS-MOS, but is displeased by KOS-MOS' roboticness and is angered when KOS-MOS killed Virgil. Shion is skilled at computer science and programming.
Shion has suffered from lots of trauma. Her tragic past heavily affected her personality. Everyone close to her tends to die, such as both of her parents, the people who died in the Miltian Conflict, Febronia, her co-workers who were killed by the KOS-MOS Archetype, Kevin, her co-workers and Realian acquaintances killed on the Woglinde by the Gnosis, Virgil, Andrew Cherenkov, a Kirschwasser in the anime adaptation, Cecily and Cathe, and her brother Jin.
Shion tries to help people as much as she can and is very stubborn about her convictions. She has humanitarian and pacifist values, and even extends her compassion to non-human lifeforms, such as Realians, which she has a fascination for. She is unable to be happy if it means being alone or being unable to share her happiness with everyone else, as one of her greatest fears is being alone. Jin commented that she possibly got her nature from their grandfather, and Margulis even comments that her eyes and attitude reminds him of a man he knows (presumably her grandfather), and he clearly doesn't like it.
Shion is a skilled chef, specializing in curry, as she grew up learning from Boss, the owner of Moby Dick's Cafe. She suffers from astraphobia, the result of two traumatic incidents which happened during lightning storms; losing her parents and later her fiancé, Kevin. Upon receiving an e-mail promoting Ninja Assault by Namco, Shion comments "It sounds like fun! I enjoy video games."
Lost Jerusalem EraEdit
6000 years ago, Shion's previous incarnation was the Maiden of Mary Magdalene, the partner of Jesus Christ, though she was not known as "Shion" at the time. Shion is required to release the power of Animus, meaning both Mary and Shion need to exist for this power can be used to its full extent. Nevertheless, Shion (as the Maiden) died in front of Mary, who at that moment had lost all of her power by dividing Yeshua's Anima, rendering her helpless. This is apparently the biggest regret in Mary's life.
Shion grew up well, having a happy life. She became friends with Febronia and her sisters, Cecily and Cathe. Febronia taught Shion how to grow flowers and gave her seeds. Shion was raised by her father after her mother was confined to Labyrinthos's hospital wing due to her disease linked to U-DO, and regularly went to see her. From her mother's room she saw the part of the Song of Nephilim. Shion would often wait on a swing-set at a playground for her father.
She met a 14-year-old Kevin Winnicot for the first time in front of Labyrinthos. Kevin tried to approach her on Wilhelm's orders, not being kind to her, but quickly fell in love with her.
At the age of eight, Shion found herself in a church when the Miltian Conflict began. She witnessed the death of Febronia and ran away in terror. She decided to go see her mother in Labyrinthos using a hidden path. She arrived in her mother's room only to have her father throw her in and be killed by 27-Series Asura Realians that Kevin was working on. She went to her mother's side, but was forced to hide under her mother's bed when the berserk Realians got in and then murdered her mother.
Once the Realians were gone, Shion tried to stop her mother's bleeding and screamed in horror before entering a trance-like state. Due to being an Animus resonant, like her mother, she resonated with the Zohar located under Labyrinthos, which provoked the mass-arrival of the Gnosis in the Real Number Domain. Nevertheless, contrary to Wilhelm's plan, she was unable to "summon" Abel's Ark. Her brother Jin arrived shortly after, but was too late to save his parents because of a fight against Margulis. Hiding his sadness, he took Shion away from the planet.
After the Miltian Conflict, Shion lived on Second Miltia with Jin taking care of her. Over time, Shion forgot certain events of the Miltian Conflict, namely her part in summoning the Gnosis, as well as Febronia.
She grew distant from Jin with time, considering him responsible for her parents' deaths and being irresponsible in general. Despite this, Jin tried repeatedly to get closer to Shion, while hiding from her the fact that she called the Gnosis. Shion refused to visit her parent's graves, partly because Suou and Aoi were not buried in them.
She and her brother spent a lot of time at Boss's restaurant, Moby Dick's Cafe, where she learned to expertly prepare curry, which became her specialty.
Shion attempted to join Vector Industries' Third Research and Development Division but after reading an essay of hers, Kevin Winnicot pulled strings and had her assigned to Vector's First Research and Development Division at the age of 18 in T.C. 4763. She became reacquainted with Kevin here, and met Allen Ridgeley, who developed a strong attachment to her. While they worked together on the KOS-MOS Archetype, Shion fell in love with Kevin and they began dating. She acquired her trademark round glasses as a gift from Kevin during this period, and they eventually were engaged to be married.
This rosy period ended with Kevin's death at the hands of the the KOS-MOS Archetype, as he tried to defend Shion from it after its activation by U-TIC (this incident was entirely planned by Kevin). Shion became Chief Engineer of the KOS-MOS Project General Operation System Research Center in the Vector Industries First R&D Division, Allen became her assistant, and Kevin became the Red Testament. Shion and Allen visited Kevin's grave, and Allen remained silent as Shion cried.
Shion was devastated by his death and KOS-MOS, who was already a very large part of her life, became the most important person in her eyes. Shion worked endlessly to complete her, which Kevin expected her to do. Eventually, through her dedication to the project, Shion began resonating with Mary Magdalene's consciousness inside of herself as she was the previous incarnation of the Maiden of Mary.
Xenosaga Episode IEdit
Shion was stationed on the Federation star ship Woglinde where she was finishing to complete building KOS-MOS. She felt attracted by the Zohar Emulator of the ship and saw a small girl many times. She met Virgil, though neither of them show signs of recognizing the other after so many years. She also met Andrew Cherenkov onboard the ship.
Shion was summoned to the bridge to deliver a report on the development of KOS-MOS to the ship's captain. While she was en route, the ship was surprised by a Gnosis fleet. Shion tried to go near KOS-MOS, but was blocked by Gnosis. Virgil and his team tried to protect her, but a Gnosis appeared from a wall behind her and grabbed her. She didn't die or transform into a Gnosis, the usual results of a Gnosis encounter, and was saved by KOS-MOS who activated herself.
She was disgusted when KOS-MOS killed Virgil, even though she did it so she would have a better chance of protecting Shion. Shion and Allen were put in an escape pod by KOS-MOS, with Cherenkov holding on to the outside in a space suit, just before the Woglinde exploded. KOS-MOS ended up on the hull of the Elsa, a scavenger ship, and threatened to smash open one of the bridge's windows and expose the crew to the vacuum of space if they did not take her aboard. KOS-MOS refused to take Shion's pod on the Elsa, considering that she would be saved soon by a Federation ship. Shion tested KOS-MOS's logic by threatening suicide if KOS-MOS did not take her with her. Shion made curry for the Elsa crew and kept an eye on KOS-MOS.
In the Gnosis Cathedral Ship, Shion was surprised by some information possessed by KOS-MOS that she, the leader of her creation, didn't put into her database and could not comprehend her behavior, acting like she was on a secret mission of some sort. Aboard the Cathedral Ship, Cherenkov succumbed to being touched by a Gnosis back on the Woglinde and mutated into one. Shion and her friends were forced to kill him and this deeply saddened Shion, who had experienced a connection to Cherenkov when he died and had learned of his past as a bio-weapon that had been mistreated after the Miltian Conflict ended and there was nothing else to fight.
When they escaped the Cathedral Ship, they met Jr., the leader of the Kukai Foundation and the Elsa's debtor, on his ship, the Durandal. He showed them the Zohar Emulators created by Joachim Mizrahi, and revealed to them a room filled with people that had been touched by Gnosis yet, curiously, did not turn into salt nor did they become complete Gnosis. They retained some of their human traits, but more than half of their bodies had become Gnosis. None had survived the process.
Jr. took them to the Kukai Foundation, only to meet the Federation's Navy upon arrival. They had been framed for the destruction of the Woglinde due to doctored tapes created by the U-TIC Organization, depicting the Durandal destroying the craft. They realized that KOS-MOS had a black box that recorded everything that took place and had a AAA security system, meaning that it was impossible to tamper with and nothing else could prove their innocence.
They decided to access the "box" through KOS-MOS's subconscious using an Encephalon dive system. Because the resonance between Shion and KOS-MOS was strong and they had shared many experiences, some of Shion's memories were projected into the Encephalon. Shion relived difficult moments, such as seeing her father alive or seeing her parents and Febronia die once again before her eyes. They successfully retrieved the information but were contacted by a girl named Nephilim and Febronia who informed them of the existence of the wave-form U-DO. They showed the group a possible future where KOS-MOS fought U-DO and destroyed it along with the universe. They promised to eliminate the threat and were let out of the Encephalon. They tuned in the data and were succinctly cleared of all charges from the Federation.
U-TIC dispatched Albedo Piazzolla, Jr.'s brother to attack the Kukai Foundation in order to steal MOMO so that he can extract the Y-Data from her. He uses the Song of Nephilim, another device created by Joachim Mizrahi, to get there, which summons a large hoard of Gnosis to attack the Kukai Foundation. Shion and her friends purge the residential areas of the Kukai foundation of most of their Gnosis and rescue several people, but when the time comes to return to the Durandal, MOMO stayed behind to take care of a wounded man. She was swiftly kidnapped.
Albedo once again contacted the Durandal and revealed that he had taken MOMO. Jr. was furious and charged after her, boarding the Song of Nephilim with his friends. Jr. said he would handle the mission alone but Shion dissuaded him, saying that the battle affected all of them and they had a right to be there. He backed down and led the way into the Song. There they found MOMO, though they quickly realized that Albedo had taken her essence as she was catatonic. This just served to further enrage Jr. and they rushed further inward.
Shion is seen in the Y-Data as being connected to KOS-MOS by Albedo, who claims that it all makes sense now when observing Shion and KOS-MOS.
They take some time to prepare for the battle but during their reprieve, Shion had to deal with KOS-MOS's communication issues as well as her hallucinations. This consequently results in her slapping both Allen and Jr. due to their behavior.
They fight through the Song and are able to see Albedo, who has MOMO and reveals that the MOMO they found was just a Kirschwasser. However, before they fight, the Blue Testament steps in and fights for him, while Albedo flies away in E.S. Simeon. The man tries to talk to the group and tells them that their quest is meaningless, but before he can reach the apex of his speech, Jr. tells him to shut up and get out of their way. They fight and the Blue Testament turns into a Gnosis, though he later retreats.
Afterward, they deactivate the Song and thwart the Gnosis's attack. However, Albedo then summoned the space station Proto Merkabah, another work of Joachim's. He uses the cannons on the station to systematically obliterate the Federation fleet and began preparing to fire on Second Miltia. Shion and her friends enter Proto Merkabah using the Elsa and fight their way to the reactor core, where Albedo was waiting. After rebuffing the man, he turned the reactor into a Gnosis to "test" the party and buy himself time to escape. Albedo set Merkabah on a collision course with Second Miltia, the party concocted a plan to destroy the station by jettisoning all its compartments, breaking it into thousands of pieces. However, the destabilization would destroy the station faster than any of them would be able to return to the Elsa in time to escape. KOS-MOS volunteers to stay behind and activate the destruction program, despite Shion's attempt to dissuade her. KOS-MOS calmed her by informing her that she was able to run faster than all of them and would be able to make it to safety in time. Shion reluctantly left her and stalled the Elsa's takeoff as long as possible. They waited until the last possible minute before they took off. Shion then had a strange feeling and told Tony to stop at a wall before leaving the station completely. KOS-MOS blasted through it seconds later and jumped to the Elsa as their section of the station began to break apart. Shion caught her, but due to KOS-MOS's weight, was unable to pull her aboard until Ziggy came and helped her.
The Elsa began entry into Second Miltia's atmosphere but the Elsa's heat shield began to disintegrate rapidly. KOS-MOS briefly morphed into a powerful being to prevent the Elsa from being destroyed. Meanwhile, Albedo discovered that the Y-Data is protected; he told U-TIC that MOMO would have to connect to the U.M.N. for the data to work. While these events were transpiring, Wilhelm stared at his Compass of Order, understanding that his plans were going in full motion.
Xenosaga Episode IIEdit
The Elsa successfully landed on Second Miltia. Shion handed to KOS-MOS to Vector's second Division so they could create her battle frame Version 2 and install the Tertiary Weapon System. Shion decided to walk around her old home and became hungry. She stopped by Moby Dick's Cafe and remet Boss, as well as Jr. and chaos. She also reluctantly ran into her brother, Jin, and she became upset when Jin asked her to visit their parent's graves. Despite this, she spent the night at the family's house, though she left early the next morning without saying goodbye.
Shion participated in the Encephalon Dive into MOMO's consiousness in order to retrieve the Y-Data for the Federation. There, they visited some of Jr.'s memories from his time at the Yuriev Institute as MOMO was based on Jr.'s late love, Sakura Mizrahi, the daughter of Joachim Mizrahi. After an incident where Albedo reappeared and stole the activated Y-Data from MOMO, before being killed, Shion and Allen were stationed on the Dammerung. There, she had more visions of Nephilim and a request from Febronia to go to Old Miltia to save her sisters.
Shion, with Allen's help, stole E.S. Dinah's main frame, and used to it to join the Elsa. Voyager, in the E.S. Dan, attack her, but she was saved by KOS-MOS who activated herself from Vector Second Division and came on her motorcycle to show Dinah's true power, causing Voyager to flee.
Later, on Old Miltia, Shion saw what happened to Cecily and Cathe, now part of the Zohar's control system, and attempted to prevent KOS-MOS from killing them in order to stop U-DO, but then, on Febronia's request to free them, allowed KOS-MOS to proceed, though this greatly saddened her.
Ormus Patriarch summons another Mizrahi invention, Proto Omega, to fuse with the Zohar and create a weapon that could strike anywhere in space. The Patriarch explains that he will use Omega to destroy the Gnosis and command the galaxy under Ormus. The party is then forced to escape as Second Miltia is morphed into the Omega System, which is the result of the Zohar and Omega fusion. Meanwhile, Gaignun Kukai morphs into Yuriev, the U.R.T.V. creator. Margulis and Hyams scientist, Sellers, betray the Patriarch in favor of Heinlein. The Patriarch is left in the Omega System to defend himself.
Shion and her allies enter the Omega System and confront the Patriarch, who is also confronted by a dying Albedo. The Testaments defeat the Patriarch and revive Albedo so that he can morph Miltian space into a space-time anomaly. After Albedo does this, Jr. decides to confront his brother personally; he dives into the anomaly and defeats Albedo. Although the space-time anomaly is destroyed, the Original Zohar remains floating in space. Before the Durandal and the Kukai Foundation can rush to acquire it, a star system-sized Gnosis appears: Abel's Ark. Abel's Ark retrieves the Original Zohar and vanishes. Both chaos and Wilhelm observe with deep interest; the latter also deems the former "Yeshua". After these events, the party separates to try and lead normal lives, although Jin worries that the chain of events is not over (Ormus is still alive, and the Zohar was abruptly seized by a mysterious force).
Xenosaga Episode IIIEdit
Shion learned many things over the course of the next year, such as Vector and her father's involvement in the Gnosis phenomenon, which lead her to leave Vector and join Scientia with Doctus, Miyuki Itsumi and Canaan. Vector allowed her to keep E.S. Dinah as a present of departure. She then began to research the true purpose of the Unus Mundus Network.
She later traveled to Fifth Jerusalem to see Allen and KOS-MOS. She was surprised by the view of the Ω Res Novae as well as T-elos, and was saddened when she heard about the cancellation of the KOS-MOS Project. She then proceeded to rescue KOS-MOS from the facility where Vector had put her, treating her as garbage, and reactivated her.
On Rennes-le-Château, when T-elos attempted to destroy KOS-MOS, Shion yelled and set in motion the events leading to everyone diving into her subconscious in an attempt to save KOS-MOS from T-elos.
In her subconscious, on Old Miltia, that she thought to be the past, she discovered the first blueprint of KOS-MOS and use them to fix the android. Voyager tried to kidnap KOS-MOS when they were unable to activate her, and also attempted to take Shion's necklace. It was at this moment that KOS-MOS finally activated. Shion had visions of U-DO in the form of Abel.
After a series of events, Shion saw the death of her mother and discovered the truth about her summoning the Gnosis. Unable to bear this, she also entered in trance, this way summoning Abel's Ark, and the team realized that everything around them is her subconscious. Kevin, who revealed himself as Testament to her, tries to convince her to join him, but fail because of Jin, Allen, and KOS-MOS, who then take Shion away from him and T-elos in the Elsa.
Shion later learned the truth about of her identity as the reincarnation of the Maiden of Mary and that KOS-MOS contained the spirit of Mary Magdalene. After KOS-MOS awakened, Shion and KOS-MOS met Kevin Winnicot and Shion decided to go to his side, fighting her friends. Allen tried to make her see what a monster Kevin was but was unsuccessful. Shion looked worried while Kevin proceeded to torture him despite his failure. KOS-MOS then saved Allen's life and Shion saw the truth, then choosing to leave Kevin. Kevin, unwilling to let Shion go, decided to eliminate her friends, thus he transformed and prepared to battle. Despite using all the powers of a Testament, Kevin lost the fight and questioned if this was the result Shion desired. Kevin then told her that she was confused, and is unable to make calm decisions about where she stood. Kevin proceeded to continue the fight with her friends, but Shion got in between him and her friends, and pleaded to Kevin to stop. Kevin told her that he didn't want to hurt her either, and asked her in frustration on why she can't seem to understand his feelings. Wilhelm, having waited long enough, told Kevin to stand down since his time was up. Kevin grunted in anger and left to regroup with Wilhelm, and Shion tried to stop him from leaving.
Wilhelm tortured Shion when she refused to activate Zarathustra with her pendant, the Key. Out of pain, agony and desperation, Shion begged Kevin to save her, and Kevin, not willing to lose the one woman he loved, chops off Wilhelm's right arm, and freeing Shion from her torture. Shion looked to where Kevin turned against Wilhelm, and Wilhelm was unsurprised by Kevin's betrayal. Wilhelm told Kevin that he knew he would betray him, and that his only reason for becoming a Testament was to save Shion. Wilhelm then placed Kevin in agonizing pain, and did so to Shion as well. Wilhelm then asked Shion if she's changed her mind, but she stubbornly refused to use the Key. Wilhelm then ordered KOS-MOS to do it instead as a way for her to protect Shion from the torture. KOS-MOS destroyed the Key at the last moment and saved Shion. In one last effort to end Wilhelm, Kevin punctured Wilhelm in the back, and told him that it was time to end this battle.
Upon Zarathustra going out of control, Kevin used his power to suppress the system's energy, and told Shion to destroy it. However, Shion feared that Kevin will vanish from this world as a result of his attempt to minimize Zarathustra's power, but Kevin assured her to not worry about him, but to concentrate on the system, for this battle won't mean anything if she doesn't stop it. After a moment to build her strength, Shion accepted to proceed with stopping Zarathustra while Kevin kept suppressing its power.
With Zarathustra defeated, Wilhelm and Kevin began to disappear, but not before KOS-MOS allowed Shion and Kevin to express their feelings one last time. Shion said a last farewell to Kevin, who tried to save her from torture and died because of it. She hugged KOS-MOS and cried, since KOS-MOS had to stay behind. She also cried when Jin decided to stay behind as well, and they both expressed regret for how they behaved.
She left with the Elsa, and while onboard upon escape, Shion senses Jin's death from miles away, suggesting that, despite the friction between the two of them, she ultimately cared for him deeply. She goes on to find Lost Jerusalem and begin a romantic relationship with Allen.
Shion is the Maiden of Mary. Nephilim states that her existence is vital to her during Episode I, and later speaks of how close they were, laughing and crying together. They were always together in Lost Jerusalem, and both of them are necessary to fully use the Animus, Shion being an Animus-resonant consciousness. Unfortunately, Shion died in front of Mary, who was unable to save her. Mary still regrets this event even after her revival in KOS-MOS.
Shion was also necessary for Mary's consciousness to awaken inside of KOS-MOS; as such, Wilhelm orchestrated the events leading up to Shion becoming the one in charge of the KOS-MOS Project to create a special link between herself and KOS-MOS. KOS-MOS always protected Shion during the game, it was the only thing that no order given to her could change, at first this was due to orders from Kevin, but eventually also due to Mary's consciousness.
Shion's relationship with KOS-MOS was complex. Shion was often motherly towards her, trying to explain what was right or wrong. Eventually, their relationship evolved into genuine friendship. KOS-MOS would also act as her confidante whenever Shion was uncertain or afraid. KOS-MOS is the only person that Shion never rejected, despite Kevin's urging.
It is revealed that this is partly due to the fact that KOS-MOS contained Mary's spirit and that Shion was the Maiden of Mary in a past life. Their relationship may be therefore be considered akin to the one Mary Magdalene and the Maiden shared, though the exact nature of the ancient characters' relationship is unknown.
Allen Ridgeley fell in love with Shion the first time he saw her though she never returned his feelings or considered him anything more than a co-worker until the end of their adventure. He tried several times to tell her how he felt but something always prevented him or she didn't pay attention. His affection for her was completely evident to everyone working on their team constructing KOS-MOS. Allen revealed his feelings for her successfully during his stand against Kevin. After this, Shion was much more compassionate toward him and even intervened when Allen was tortured by Kevin.
After Zarathustra was defeated, the two enter a relationship.
Shion did not get along with her older brother, Jin Uzuki, after the Miltian Conflict and their parents deaths, which she blamed him for as he was unable to save them from Gnosis. Shion resented Jin for his lax attitude and inability to hold a steady job for more than six months. Despite her attempts to avoid him, Jin reached out to his sister often, inviting her to honor their parents or come visit their family home, which he had turned into a medical practice and later a bookstore due to his annoyance at his patients. Shion's avoidance of her brother reached the point of desperation when in close proximity to him. Although they don't always agree, Jin looks out for his little sister like when Kevin Winnicot tried to get her to go on his side. They apologize mutually for their behavior after Zarathustra was destroyed.
Kevin Winnicot was Shion's boss and lover before the events surrounding KOS-MOS's awakening. He attempted to manipulate her at first for Wilhelm's plan, but fell in love with her and were engaged to be married.
He died when the KOS-MOS Archetype was risen by U-TIC and his death devastated Shion. When she replaced him as the leader of the KOS-MOS project, Shion became obsessed with finishing her for Kevin. He was risen by Wilhem as the Red Testament and he became the leader of Vector's right-hand man. Kevin still held feelings for Shion and persuaded her to leave her friends in order to join him.
He died again when he attempted to stop the awakening of Zarathustra and this saddened Shion, though she had already realized that he was evil, but did all this to save her life. They exchange their feelings from the broken pendent that KOS-MOS destroyed, and it is revealed to contain flower petals from the garden Shion made. The exact flower petals that shows how much he truly loves her, even to the very end. As Kevin bids her farewell with a smile and passes on to the other side with peace in his heart, Shion now looks forward to the future and bids him farewell with renewed resolve. Despite all the pain and suffering within the story that he may have caused, Kevin's undying love for Shion, and Shion's discovery of his determination to sacrifice himself for her, helped her become stronger and looking forward to saving the universe from destruction.
Shion's relationship with Juli is plain and clear, and both of them are in friendly terms. Juli expressed that she envies Shion's resolve to stay true to her calling, while Juli continues to do things that she doesn't if they are right or wrong. Juli even gave Shion a warming conversation about the duties of a creator, and how one should believe in those they created and cherish. Interestingly, both Shion and Juli had family members that had suffered a mental or subconscious disease: Shion's mother was unable to move and fell into a coma, and Juli's daughter was unable to speak and express her emotions on the surface. This is due to the fact that Shion's mother shared the same blood from the People of Zohar, and that Juli's husband, Joachim Mizrahi, also came from the People of Zohar that have the ability to utilize the Zohar and make contact with U-DO.
In addition to Shion's intellect, it is heavily hinted that she learned the same martial arts that Jin and Margulis are masters of, as taught by her grandfather. This shows in her Double Tech attacks with her brother which include fast and skillful swordplay. Upon destroying an object, most of her moves are kicks and punches, not just her M.W.S. attacks. Though unlike them, she primarily focuses on hand-to-hand combat but uses her M.W.S. in conjunction with it. It is stated that she was taught at least some of this battle technique in the Episode I database, which states that their grandfather taught her a strong, high kick.
In battle, Shion relies primarily on the M.W.S., an invention of her friend Miyuki Itsumi, she is also skilled in the use of Ether to augment her combat skills. Shion is the only character who can use the ultimate Erde Kaiser spell in Episodes I and II. It uses 60 ether points, more than she will likely acquire by the end of the game, though with the Angel Ring that number is halved to a more manageable value. A special side-quest is required in order to obtain this item, but it will do 9,999 points of damage. It can kill almost any boss, including both optional bosses of the first game, but can only be used once per battle.
- "I have to put it back... I have to put it back... it won't stop... I have to put it back... or else... mommy's gonna go away... put it back... someone... please put it back... no... no... this isn't true! NOOOOOOOOOOOOO!"
- "Good morning, KOS-MOS."
- "Stop it! You have no right to play god with their lives!" (to Virgil)
- "You have no right to go about killing people! Why did you shoot Lieutenant Virgil?!" (to KOS-MOS)
- "How could...! How can you even say that! Have you no conscience?!" (to KOS-MOS)
- "I can't believe I just handed over top-secret company info to the Federation without permission... I am SO fired..."
- "But why... but why does everyone... Tell me WHY!? WHY DOES EVERYONE ALWAYS HAVE TO GO AND LEAVE ME BEHIND?!"
- "Wait a minute, Jin. Not this again. I've already told you, I'm not going to their graves. No! I absolutely refuse. Just stop it. I can't believe we're talking about this again. Mom and Dad aren't even in those graves! You know just as well as I do where they are! Right? You and I were the only ones there that day. And if you... if you'd only been there SOONER, they'd STILL BE..."
- "It's horrible... I can't stand this... I'm... I'm sick of ALL THIS! I just... I can't take it anymore! I just CAN'T! UGHHH!"
- "Feb... No, I can't! Why does it have to me!? Why did you call me!? I WON'T DO IT! I CAN'T DO IT!"
- "You MONSTERS! GET AWAY FROM MY MOM!" (to 27-Series Asuras)
- "What do you want? Are you here to say a bunch of cryptic things again and confuse me? You're always like that. You just appear in front of me, say whatever you feel like, then just watch without actually doing anything!" (to Nephilim)
- "I don't believe it... how can you say that? It's not fair of you to say something like that to me now. I'm the one who was wrong, not you. You always thought about me. I knew that you did.. but, I was the one who couldn't admit my real feelings. I was embarrassed or uncomfortable or something so... I'm the one who pushed you away. I'm the one who caused you so much pain... and... I'm sorry. I'm so sorry for it, Jin. Forgive me. Please, forgive me." (Shion to Jin before his death)
- "Jin, I know I never said it, but... I was happy. In my heart, I was so happy to be your sister. So... so thank you. Thank you, Jin."
- "Jin... Now I think I understand what Wilhelm wanted to do, just a little bit better. His methods may have been wrong, but now, I think I understand the logic behind his reasons. Living the same life, over and over again, but living those lives without any regrets is what really matters. That is probably what the ideal vision of being human is all about."
- Most of the primary female characters in Xenosaga are named after flowers. "Shion" is the Japanese name of the Tatarian Aster, a type of daisy.
- Her blood type is A, as seen when KOS-MOS uses her scanner when she first awakens.
- In Episode I, it was revealed that she suffers from astraphobia, a result of what happened with the KOS-MOS archetype.
- If Episode I's bonus e-mails are to be believed, she is friends with Kazuya Mishima from Tekken.
- Shion makes an appearance in Namco x Capcom, when she, MOMO, and KOS-MOS appear in the middle of Shibuya, Tokyo during a series of dimensional disturbances, in time to help the main characters against a Gnosis attack. In the game, Shion is paired with MOMO as a single unit.
- As seen in Namco x Capcom, she seems to dislike amphibians, mostly frogs.