Viluy (Biriyui (Viluy)) [Yui Bidou (Bidou Yui)] [viluite (hydrous calcium magnesium aluminum boron silicate): a mineral, also known as idocrase, ptilolite or vesuvianite, greenish yellow to brown or sometimes white, red or blue in color, which crystallizes in the orthorhombic system as short, prismatic crystals or in granular masses] (original series)   
Real name: Yui Bidou   
Occupation: Student and teacher at the Infinity Academy, president of the Infinity Academy Science Club (as Yui Bidou); scientist, computer programmer, nanoroboticist, member of the Witches 5, member of the Death Busters (as Viluy)   
Identity: The general populace of Earth is unaware that Yui Bidou used the alias of Viluy or that she was secretly a member of the Witches 5 and the Death Busters   
Legal status: Unrevealed, presumably Citizen of Japan with no known criminal record, still a minor   
Other aliases: None   
Place of birth: Unrevealed, presumably Tokyo, Japan   
Marital status: Unrevealed, presumed single   
Known relatives: None   
Group affiliation: Witches 5, Death Busters   
Base of operations: The Infinity Academy, a prestigious private school located in the Higashi Shinagawa district of Shinagawa-ku in the city of Tokyo, Japan
First appearance: Pretty Soldier Sailor Moon S Episode 103 (Episode 122 as Yui Bidou)   
Final appearance: Pretty Soldier Sailor Moon S Episode 122   

History: The past of the young woman known as Viluy remains shrouded in mystery. Aside from the fact that her real name appears to have been Yui Bidou and that she was a student at the Infinity Academy, no details have ever been revealed about her private life, neither who she really is nor where she really comes from, not even how she came to be associated with the the evil organization known as the Death Busters or what her motives were for joining them in their sinister quest to purge the Earth of all life by summoning Master Pharaoh 90 and triggering the apocalyptic cataclysm known as the Silence. A member of a quintet of young female scientists and sorceresses collectively known as the Witches 5, the cold-hearted, pompous, and overconfident Viluy was initially shown her way around the laboratory and taught how to perform her job by the group's senior member Eudial and eventually became an experienced computer programmer and brilliant nanoroboticist in her own right, second in her technical expertise only to the latter herself. As Yui, she even managed to maintain an extremely impressive academic record, being not only one of the top students at the Infinity Academy with grades and test scores comparable to those of Ami Mizuno, but also serving as the president of the Science Club as well as a teacher there. 
                While it remains uncertain exactly how long Viluy served under the employ of the Death Busters before being summoned to active duty, she - at least as far as is known - did little to directly advance her position in the organization despite her ever-growing contempt for Eudial following her numerous failures in attempting to locate and retrieve the three mystical objects collectively known as the Talismans and evident disappointment at Mimete being chosen as the former's successor, and instead spent her time performing experiments, conducting independant research, attending the occasional lecture by Professor Tomoe, and playing the odd game of Twister with her fellow witches. :) Viluy's first major role came following Tellu's untimely death at the hands of her Hyper Terurun, at which time the assignment of procuring pure hearts from human beings in order to sate Mistress 9's ever more pressing hunger fell upon her shoulders. Taking note of the fact that at least part of Japan's upcoming pre-high school entrance exams were to be electronically written at the Infinity Academy in the near future, the young witch devised a scheme where she would use a combination of the private school's computer network and nano robots of her own creation and design in order to extract and collect the Heart Crystals of all the attending examinees in mass quantities. Apparently impressed by her proposal, Professor Tomoe approved her plan, a fact that the hopelessly arrogant Viluy consistently saw fit to dangle beneath Kaolinite's nose, mercilessly and cruelly teasing the latter to no end about both her effectiveness as a member of the Death Busters as well as the fierce crush she had developed on the professor as a result of his having saved her life.   
                After providing Professor Tomoe with a quick report on the status of her "special project" during the day of the actual exam one cold winter morning, Viluy assumed her civilian identity of Yui Bidou and proceeded to mingle with the other students. It was during this time that she happened upon Ami Mizuno, who, while an actual examinee, had arrived in the company of her fellow Sailor Soldiers - likewise in their civilian identities - in order to conclusively determine whether or not the Infinity Academy was the stronghold and secret headquarters of the Death Busters, as their earlier discovery of Tellu's student notebook had strongly suggested it was. Claiming to have always wanted to meet her academic rival - perhaps out of some sense of admiration and respect on her part - Yui introduced herself, and, following a brief yet amusing conversation with Usagi Tsukino, took advantage of the chance encounter and spirited Ami off to her laboratory in order to show her the miniature universe model of the Tau Star System that she and the other members of the Infinity Academy Science Club had created.   
                During the in-depth conversation which followed concerning the inherant organization and educational hierarchy of the Infinity Academy, it quickly became clear to the two girls that they had dramatically opposite and thoroughly incompatible views on the inherant nature of both academia and science. While Yui firmly believed that excellence in scholastic achievement was the definitive indicator of good leadership and considered logic to be the key ingredient in all things scientific, Ami maintained the belief that understanding the feelings and emotions of excellent and poor students equally well was the virtue of a good teacher and that comprehending love and the warmth of the human heart in science was the most important thing of all. In the end, while a genuine interest in getting to know Ami may have sparked her actions, Yui left the controversial discussion with a healthy level of suspicion about her academic rival, a sentiment echoed by Professor Tomoe. The young witch, however, was far more bold in her assertions than he was as to what exactly it was that Ami Mizuno was hiding and became determined to either expose her as a Sailor Soldier or eliminate her altogether if she attempted to interfere with her plan to steal pure hearts in any way.    
                Once the pre-high school entrance exams were safely underway, Viluy set her scheme into motion and managed to successfully remove and gather a large amount of Heart Crystals from the attending students without incident. Then, as Yui, she went to investigate a security breach in the underground laboratory of the Infinity Academy that served as the inner sanctum of the Messiah of Silence and confronted the three intruders - Haruka Ten'ou, Michiru Kaiou, and Ami Mizuno herself - the former two having come to eliminate Hotaru Tomoe before she fully revived and the latter intent on protecting their intended victim from harm. Revealing herself to be a member of Witches 5, Viluy incapacitated Haruka and Michiru with her "Mosaic Buster" and attempted to do the same to Ami, who was left with little choice but to transform into Sailor Mercury right in front of the young witch in order to stand any chance of protecting either her friends or herself.  
                Surprised to learn that Ami was a Sailor Soldier despite her suspicions, Viluy was seemingly bested after Sailor Mercury froze the continuous stream of nano robots that comprised her "Mosaic Buster" solid after countering it with her "Shine Aqua Illusion". This belief, however, was quickly proven wrong when the young witch used the computerized wristband that served as the control device for the miniature machines to have them break free of the ice in which they had been encased and attack her adversary with the intent of having them disassemble her at the molecular level, leaving only her pure heart behind. While the newly arrived Sailor Soldiers were forced to submit to Viluy and refrain from attacking lest their teammate be lost as a result of their actions, they managed to preoccupy her long enough for the recovering Haruka and Michiru to transform into Sailor Uranus and Sailor Neptune, respectively. Taking her by surprise with a combination "World Shaking" and "Deep Submerge" attack, the two Outer Soldiers gave Sailor Moon the opportunity she needed to assume her Super Sailor Moon form and deliver her patented "Rainbow Moon Heart Ache", severely damaging her opponent's control bracelet in the process.
                Unaware of the extent of the damage that her microcomputer's controls had suffered, Viluy attempted to send her nano robots after Super Sailor Moon, only to have them malfunction, circle back, and attack her instead. The corruption of the miniature automatons' programming progressed to such an extent that the Infinity Academy central computer suffered a severe overload, releasing all the Heart Crystals that had been obtained thus far through the network system and allowing them to return to their rightful owners.   
                 Viluy suffered a slow and horrendous death at the hands of her own nano robots as they took her apart molecule by molecule, the sole witnesses to her final moments - the Sailor Soldiers - left with no choice but to watch her inevitable demise from a safe distance with more regret than any sense of triumph, unable to approach the young witch without running the risk of sharing in her fate and, more likely than not, uncertain of what they could have done in order to halt the process. After the young witch was finally utterly consumed by her own malfunctioning creations and vanished into nothingness, Sailor Mercury - upon picking up the damaged and now defunct remains of her adversary's wristband, only to have it crumble to dust in her hands mere seconds later - expressed her sincerest pity for Viluy and the unfortunate fate that her cold-heartedly logical and loveless approach towards science had brought upon her in the end.   

Height: Estimated at 5'5'' (165 cm); never accurately measured
Weight: Estimated at 120 lbs. (54 kg); never accurately weighed
Eyes: Blue   
Hair: White   

Abilities: Viluy possessed no known supernatural powers. Aside from being extremely intelligent, she was also an expert computer programmer and highly accomplished nanoroboticist, taking into account both her tender age and the relatively primitive level of the technology in mainstream science in comparison to her own.   
Paraphernalia: Viluy employed a series of nano robots - microscopic programmable machines of her own creation and design - in order to infiltrate the Infinity Academy computer network and use it to extract the Heart Crystals of all the students, absorb them through the monitors, and subsequently store them in an unknown location. These nano robots could also be released within a continuous stream of white energy during her "Mosaic Buster" attack, and, upon striking their human target, would engulf that individual in an electrical whirlwind of miniature mechanoids that would either incapacitate that person or disintegrate them completely, leaving only their pure heart behind. In each of the aforementioned cases, she controlled and directed the actions of her tiny automatons by manipulating the controls of the highly advanced microcomputer incorporated into the oversized wristband she wore around her lower left arm. Viluy most significant accomplishment, however - at least far as the Death Busters' cause was concerned - was her participation in the creation of a synthetic miniature universe - a model of the Tau Star System - a larger version of which was later used in combination with the Holy Grail to summon Master Pharaoh 90 to Earth.

Japanese Voice Actress: Yoshino Takamori   
North American Voice Actress: Unknown   

This entry first appeared on: March 29, 1998 
This entry was last modified on: December 10, 2000 

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Viluy: The fourth of the Witches 5


Yui Bidou: Honor student with global conquest as an extracurricular activity :)


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