RedEye

About
RedEye is a parasitic Dark Lord affiliated with the Kayblis Faction and a major antagonist in Rance X.

Prior to becoming a Dark Lord, RedEye was an enchanted gemstone created at an unknown point in the NC Era by a talented enchanter named Gaugau Kestina. Desiring to find a power great enough to defeat the Demon King, Gaugau gave RedEye the ability to attach itself to other creatures and objects and seize total control over them, amplifying their strength with its own incredible Magic. To assist with accomplishing this task, Gaugau bestowed the gem with a will of its own and programmed into it a basic directive to seek out whatever means it could to increase its magical power. There was no limit to the variety of things RedEye could place under its control: from Humans, to Monsters, to weapons, and even Dragons.

RedEye was largely docile in the earliest days of its existence, and obediently followed Gaugau's orders with the loyalty of a simple Wanwan. As it continued to attach itself to stronger things and improve its own power, however, a darkness began to awaken in its heart. While it did not harm its creator, RedEye began to ruthlessly attack other living things as a means of testing its growing strength, taking great pleasure in killing as proof of its superior ability. Fearing this instability, Gaugau modified RedEye's directive with the command that it would die as soon as he did, ensuring that it would not run rampant without his supervision.

Some years later, Gaugau became bedridden after contracting a fatal illness. On the verge of death, he revealed to RedEye, who had remained at his bedside throughout, that the two of them would pass on to the afterlife together. To his surprise, RedEye challenged this assertion, stating that, as his son BauBau had inherited his blood, it would not have to die along with him. This logic ultimately proved correct, and RedEye remained alive and active even after Gaugau had passed on. No longer required to take orders from anyone, RedEye began to gleefully rampage across The Continent in search of ways to further augment its power. The creature created for the sake of liberating humanity became one of its greatest disasters.

After decades of spreading chaos and destruction across the world uncontested, RedEye was eventually subdued by one of Gaugau's descendants, a heroic woman named Tsuranitsura Kestina. Cooperating with the AL Church, the largest religion on the Continent, Tsuranitsura was able to deactivate RedEye's enchantment and revert it to a non-sentient state, after which it was labeled a Balance Breaker and placed under a magical seal, for a time freeing humanity from its presence.

Years after its defeat, word of RedEye's destructiveness eventually reached the ears of Demon King Nighcisa, who, intrigued by its existence, chose to personally break into the AL Church's headquarters and release it from its confinement. Desiring its power for himself, Nighcisa coated the inactive RedEye in his blood, reawakening it as a Dark Lord. The blood of the Demon King caused RedEye to become even more powerful and vicious, as well as increasingly more fixated on killing living things in order to prove itself as the strongest. RedEye's loss against Tsuranitsura made it fearful of the power the Kestina family held over it, compelling it to abduct and enslave its descendants in order to place them under careful supervision to make sure that they would never again rise against it. Remaining conscious of the connection between its own life and those of Gaugau's descendants, RedEye forced the captured members of the lineage to copulate immediately upon reaching sexual maturity to produce offspring, killing them soon after to begin the process anew with their child. Under RedEye's oppressive control, the Kestina family became broken in both mind and spirit, fully resigned to its role in sustaining the crazed Dark Lord.

In the year GI0420, the Demon King Gi, at the pressuring of his subordinates, declared war on the Holy Magic Sect, the most powerful and prominent human civilization in existence at the time. Harnessing powerful magic, the Holy Magic Sect constructed Toushin, mechanical warriors of unbelievable power, to fight against the forces of the Monster Realm. During the conflict, known as the Dark Lord War, RedEye encountered one such warrior, Toushin Gamma, who impressed it with its formidable strength. RedEye eventually succeeded in capturing Gamma for itself, enhancing the toushin's already astounding power with its own magical abilities to become an extraordinarily potent destructive force. Though the conflict eventually ended in the year GI0452 following the collapse of the Holy Magic Sect, RedEye maintained control over Gamma, asserting itself as the most powerful magic user on the Continent with its power.

Hundreds of years after the end of the Dark Lord War, RedEye instigated a duel with Hornet, Gi's daughter and intended successor as Demon King. As the child of the Demon King, Hornet possessed naturally outstanding magical abilities that threatened RedEye's perceived position as the Continent's most powerful mage, which prompted the parasite to challenge her as a means of proving its strength. After an intense battle that lasted for several days, neither side was ultimately able to land a decisive victory over the other, forcing the duel to end in a draw. RedEye was left livid by this outcome, unable to accept the existence of someone with magic rivaling its own, and developed a severe grudge against Hornet from then on. The clash of the two mighty mages also proved to have tremendous effects on the surrounding area, steeping it in a permanent cloud of hazardous "death ashes" that rendered it uninhabitable even for a Dark Lord. The ruined region became known as the Land of Death, and was quickly recognized as among the most dangerous territories in all of the Monster Realm.

In the year GI0912, RedEye became aware of the construction of the Maazel Line, a magically-automated security system constructed by the Magic Nation of Zeth at its border with the Monster Realm. Intrigued by the magical power of such a creation, RedEye went against Gi's human non-interaction policy in order to invade Zeth and investigate the Maazel Line. After reaching the Maazel Line, RedEye was able to attach itself to the defense system and seize total control over its functions. RedEye turned its newfound power against its creators and used the Maazel Line's weaponry to lay waste to Zeth and its people, allowing an army of monsters to enter into the country to assist in spreading chaos. RedEye's rampage lasted for nearly thirty years before finally ending in GI0940, when the period's Hero of the System led an operation to bomb the Maazel Line that resulted in its total destruction. No longer able to operate the ruined Maazel Line, RedEye retreated back to Gamma and fled Zeth, with its monster followers being driven out soon afterward.

Even following its escape, RedEye's attack left several major sociopolitical impacts on Zeth that lingered for years to come. Along with causing the death of Queen Artesia, who sacrificed her life to the Devil Xacalite in an effort to protect her people, it also sparked the first documented instance of conflict between magic and non-magic users since the nation's foundation over the government's perceived incompetence at combating the invasion. The incident became known as "RedEye Dark", and went down in history as one of the greatest tragedies to occur in the modern age of humans.

In the year GI1015, Gi unexpectedly named Kurusu Miki, a human girl from an Alternate Dimension, as his successor as Demon King, kidnapping her from her home in order to pass on his blood to her. Before Miki was able to fully awaken to the power of the Demon King, however, she was rescued by her boyfriend Ogawa Kentarou, who was able to temporarily stop her transformation through the use of Hirami Lemons. With Gi having allowed himself to be killed by Kentarou, and Miki refusing to accept the position of Demon King, the Monster Realm was left without a leader and thrown into a state of civil war. The war was fought between Hornet, who desired to follow through with her father’s wishes and embrace Miki as the new leader of monsterkind, and the Elite Dark Lord Kayblis, who desired to become the Demon King himself and wage war against humanity. Still seething from its grudge against Hornet and eager to sow further destruction across the Human Realm, RedEye chose to ally itself Kayblis. Despite the considerable asset that its tremendous magical power lent to the Kayblis Faction's war effort, however, RedEye's single-minded and manic personality made it near impossible to give directions to, causing it to randomly fight against the opposing army without any particular goal in mind.

In the year LP0007, the Kayblis Faction was finally able to land a decisive victory over the Hornet Faction, causing Kayblis to be recognized as ruler of all of monsterkind. Immediately after becoming the ruler of the Monster Realm, Kayblis ordered an invasion into the Human Realm using the entirety of the Monster Army’s forces, sparking the beginning of the 2nd Dark Lord War. Unlike its fellows, RedEye was not assigned to lead an attack on any single territory, instead being given free reign to lead its soldiers to attack where it pleased.

During the initial invasion, RedEye attempted to launch an attack on Pencilcow, the home village of the Kalar race, intending to slaughter all of its inhabitants in order to prevent the possibility of someone harnessing the magic-enhancing properties of their forehead crystals to surpass its own magical power. On its way to Crystal Forest, RedEye and its army stormed across the outskirts of Zeth, slaughtering all that it came in contact with. During one such attack, RedEye skirmished with a division of the Zeth Army that included Anise Sawatari, a mage in possession of destructive power that rivaled the Dark Lord's own, who managed to destroy one of Toushin Gamma's arms. While its soldiers quickly overtook the defending human army and pushed forward into Crystal Forest, RedEye was left outraged by Gamma's poor showing in the battle and haphazardly abandoned the damaged toushin along its warpath, deeming it too weak to continue using.

During the events of Rance X, one month after the beginning of the war, the forces of the Human Realm were, through various circumstances, formally united under the warrior Rance to create the United Human Army. Due to possessing the Dark Sword Chaos, one of the only weapons capable of penetrating the Invincibility Field that protects Dark Lords from all forms of damage, Rance was able to form a specialized squad made up of humanity’s finest warriors designed to fight against and defeat each of the Dark Lords invading human territories. Titled the Dark Lord Extermination Squad, this group allowed humanity to begin to mount a more effective resistance against the Monster Army, providing hope in a seemingly hopeless situation. Worried for the safety of his daughter and the kalar's princess Reset Kalar, Rance's first action upon establishing the Dark Lord Extermination Squad was to lead it into Pencilcow and protect the endangered race from the invading monsters.

As Rance and his allies began their trek toward Pencilcow, RedEye and its army succeeded in surrounding the area near the kalar village, but were unable to pinpoint its exact location due to the illusionary barrier that had been erected around it. Forced to bide its time until the village was found, RedEye set up a temporary base camp and used the spare moment to attempt to make Rona Kestina, the latest inheritor of the Kestina bloodline, mate with Ian Ruston, a young man who the Dark Lord had chosen to abduct rather than kill for the sake of breeding. It was met with resistance from both parties, with Rona recognizing that reproducing would swiftly lead to her death and Ian being paralyzed by a combination of fear and confusion. As it waited, RedEye was also presented with the unconscious bodies of two powerful individuals from the defeated Zeth Army by its soldiers to use as a new vessel in the place of Gamma. Though the Dark Lord brusquely rejected the first potential host, a woman named Rizna Lanfbitt who possessed the same absolute magic resistance as a Haniwa, due to believing her ability to be redundant relative to the protective powers of its own Invincibility Field, it gleefully accepted the second, who was none other than Anise, the very mage that had damaged its previous body and proven herself in the parasite's eyes as the stronger creature.

Soon after seizing control over Anise's body, RedEye received a report that smoke had been seen emanating from a cave that was believed to be a hidden entrance to Pencilcow. Eager to test out its new power, RedEye immediately entered the cave, where it used the combination of Anise's obscene magical energy and its own to continuously cast white and black destruction rays, two of the highest level magical spells, in rapid succession and obliterate all that stood in its way. The paths of the destruction rays stymied the movements of the Dark Lord Extermination Squad, which had been attempting to lead the surviving kalar in an evacuation through the cave, forcing it to take sudden and drastic action in order to defend against them. After barely surviving the initial barrage of attacks through the defensive magic of Queen Pastel Kalar, Magic the Gandhi, and Sill Plain, Rance ordered his allies to take shelter in the crannies along the sides of the cave. Exploiting the narrow shape of the passage, the group was able to both safely avoid RedEye's attacks and ambush him from either side as he approached their location.

While RedEye was caught off guard by Rance's surprise attack and ability to penetrate its invincibility field using Chaos, it nonetheless managed to overwhelm the warrior and his allies with its magic, pressuring Rance to call for a temporary tactical treat. Returning to the margins of the cave, Rance encountered a small group of monster soldiers from RedEye's own army, who had hidden themselves to avoid getting caught in the crossfire of the Dark Lord's attacks. Fearing for their lives, the soldiers pleaded for a temporary truce, and offered the box containing Rizna's body to him in exchange for their survival. Recognizing Rizna from the numerous adventures they had shared together, Rance immediately accepted the proposal and had her resuscitated. Wasting no time, Rance asked Rizna to use her magic-neutralizing body to shield his party from RedEye's attacks, allowing them to strike back at it without fear of its retaliation.

After sustaining significant damage, RedEye detached itself from Anise's body to possess a nearby magic monster soldier and prepare a white destruction ray as a counterattack. Rance attempted to charge at the creature and deliver a finishing strike before it could fire off the spell, but was forced to take cover when the no longer controlled Anise fired a white destruction ray of her own toward RedEye. The two top-level spells collided midair, causing tremors and a blinding white flash to envelop the cave. RedEye took advantage of the confusion to flee from the scene, but promised the Dark Lord Extermination Squad before exiting that it would soon return in an even stronger body. Despite its survival, RedEye's disappearance threw his soldiers into a dissaray, allowing the surviving kalar to safely evacuate from Crystal Forest to the United Human Army's headquarters in the Free City of CITY.

In December of LP0007, two months after its attack on Pencilcow, RedEye reappeared with a force of 50,000 monsters to launch an assault on Kawanakajima, the island headquarters of the AL Church. The suddenness of the raid prevented the Dark Lord Extermination Squad from deploying in time to counter it, forcing the presiding church affiliates to abandon the sacred island for safety. RedEye left the scene just as abruptly as it entered it, however, which allowed Bishop Mi Lordring to lead a group of the church's most devout followers in an operation to retake the island's Holy City of Kaiz within the same month as the evacuation.

Some time later, RedEye gained dominion over Toppos, a legendary monster in possession of strength, speed and stamina surpassing that of even Dark Lords. Created for the purpose of regulating population levels of the Antagonist Race, Toppos was seen as more of a natural disaster within the Monster Realm rather than a denizen, and had no prior allegiance to the Monster Army, making RedEye's capturing of its power a major asset in the Monster Realm's favor.

At the dawn of LP0008, Stroganoff, the Great Monster General entrusted with leading the invasion of the Human Realm, received a report that confirmed CITY as the location of the United Human Army's headquarters. Intending to seize victory in a final decisive attack, Stroganoff compiled an enormous army of 300,000 monsters together and ordered it to charge at Rance Castle, the United Human Army's base of operations. RedEye acted alongside this unit, eager to have its revenge against the humans and reinstate itself as the strongest creature. Despite this enthusiasm, the Dark Lord did not show itself throughout the early stages of the siege, intending to make its eventual appearance all the more dramatic to the forces of humanity. With the majority of their soldiers preoccupied with defending the major nations of the world, the commanding officers at Rance Castle were placed in dire straits and forced to rely on careful and economic tactics in order to hold their ground against the monsters.

After several hours of nonstop fighting, RedEye finally showed itself to the Human Army by suddenly charging toward the front gates of Rance Castle, effortlessly breaking through the unit commanded by Houjou Souun, the most powerful Diviner in JAPAN. Rance and the rest of the Dark Lord Extermination Squad rushed to confront it, but proved to be unable to stand against the incomparable strength of Toppos and were quickly pummeled into submission. Refusing to admit defeat, Rance mustered the last of his energy and leapt toward RedEye to deliver a final strike, only to have his attack intercepted by the Dark Lord grabbing Chaos' blade out of the air and snapping the sword in half. RedEye then used the blade of the broken Chaos to stab the still struggling Rance through the clavicle, hitting his body with enough force to launch it ten meters away and send it tumbling down the surrounding mountain range.

Thrown into a panic by Rance's defeat and Chaos' destruction, the commanders of the Rance Castle defense force were at a loss for a means of subduing RedEye. After a moment's deliberation, Souun resolved to die defending Rance Castle, and commanded his remaining troops to hold off the Dark Lord with the last of their breaths. Moments before its complete collapse, Souun's unit was approached by the tycoon Copandon Dott, who had been acting as the representative for the Free Cities Alliance in its totality throughout the war. Betting everything on fate, Copandon drew from the Ultimate Fortune Lot, a legendary divination item that provided its user with miraculous luck that could overcome any enemy if the "Great Luck" fortune was drawn but instantly took their life if it was not. Copandon succeeded in drawing a "Great Luck" fortune from the device, causing an avalanche to suddenly occur and exclusively hit the surrounding monsters. RedEye managed to ward off the falling rocks using Toppos’ massive body, only to be swept up by a sudden massive gust of wind and blown away. The wind carried RedEye far from Rance Castle, temporarily delaying its rampage and buying the Human Army the precious time needed to regroup and search for the missing Rance.

After a search throughout the area around Rance Castle, Rance’s unconscious body and the shattered Chaos were eventually found by Kentarou, who had been cooperating with the Dark Lord Extermination Squad in exchange for Miki’s protection. Kentarou carried the two back to Rance Castle, where Rance eventually regained consciousness after intensive physical treatment. In order to repair Chaos, who drew energy from erotic activity, Rance begrudgingly allowed the sword to choose between any of the Rance Castle knights or the sheltered kalar to sleep with. While Chaos deliberated between the various women, he was unexpectedly picked up by his old comrade from his time as a member of the Legendary Five Café Artful, who appointed herself as his partner and carried him off to her room without giving him a chance to say otherwise. Thousands of years of mounting sexual tension were at last resolved between the two, causing Chaos' body to be restored with even greater cutting power and durability than before. Having regained their strength, Rance and Chaos prepared for the approaching rematch with RedEye, determined to avenge their previous loss.

RedEye eventually returned to barrelling toward Rance Castle hours later, where he was confronted by Rance once again. Recognizing the threat that Toppos' monstrous strength posed, Rance attempted to exploit RedEye's parasitic behavior by falsely claiming his follower Rocky Bank to be the strongest man in the world with a staggering Level Cap of 10,000, intending to trick the Dark Lord into possessing him and then kill them both with little difficulty. The plan instead had the opposite effect, with RedEye deducing that killing Rocky would prove itself as the strongest creature, causing it to remain attached to Toppos and attack them. The combined power of Toppos and RedEye still proved to be too much even for the newly-tempered Chaos, once again pushing Rance and his allies to the brink of defeat.

As the Dark Lord Extermination Squad struggled against RedEye, the battle was interrupted by the sudden appearance of a mechanical giant falling from the sky near it. As the dust around it settled, the figure was identified as none other than Toushin Zeta, one of the few preserved toushin that had until recently remained dormant on display in the Zeth Royal Museum. Immediately afterward, the dragon Cantel appeared carrying Patton Helman, the former emperor of the Helman Republic, and the legendary black-haired kalar Hunty Kalar on its back, who declared that they had arrived with the remnants of the Holy Magic Sect to assist humanity in its time of need. Using his massive body, Zeta restrained Toppos, allowing Rance, Patton, and their allies to strike at RedEye without risk of being struck back. RedEye eventually wrestled free from Zeta's grasp, but had been so thoroughly pulverized that it was unable to regain its previous lead in the battle and soon collapsed from the unceasing onslaught of enemy attacks.

Delivering a final decisive attack, Rance successfully ripped RedEye from Toppos' body, launching the Dark Lord several meters away behind a pile of rocks. With Toppos soon regaining control over its mind and leaving the area, the Dark Lord Extermination Squad began celebrating a hard-fought victory, unaware that RedEye had not perished in the attack. Initially simmering in self pity over its weakness, RedEye realized that its loss simply confirmed Rance as the strongest creature, causing it to resolve to capture his body for itself. Rising from its rocky resting place, RedEye launched itself at high speeds toward Rance, who was too exhausted to mount any kind of resistance against it. At the last second, RedEye's body was struck down and pinned to the ground by Biscuitta Burns, the head maid of Rance Castle, who proceeded to tie its legs together to prevent it from taking hold over her master. Unable to move, RedEye despaired over its inability to continue bringing suffering to living things before finally getting stabbed through by Rance, reducing it to a Demonic Blood Soul and ending its reign of terror at last.

Though RedEye's defeat rid Rance Castle of its most pressing threat, the victory proved only momentary as the remaining forces of the Monster Army continued to march toward it. Delivering a sly wink amid his panicked comrades, Patton revealed that he had planned for the situation accordingly, and asked Rance to command everyone present to retreat inside of Rance Castle. Rance was greeted inside the crowded castle by Sheila Helman, president of the Helman Republic and the younger sister Patton, who had been absent throughout the conflict at her brother's request. Working in conjunction with Zeta, Sheila, the last-living descendant of the Holy Magic Sect, was able to utilize the nearby Tower of Babel as a makeshift buoyancy wand and convert Rance Castle into a Toushin Toshi, elevating it 100 kilometers into the air and lifting it safely away from the attacking monsters, completely turning around the state of the war in the process. In addition, Biscuitta was able to safely capture both Rona and Ian, who had accompanied RedEye during the attack, freeing them from the Dark Lord's control and allowing them to reclaim ownership over their lives as employees at Rance Castle.

If Rance succeeds in defeating the Toppos-possessing RedEye during his first encounter with it, the parasite is forcefully unlatched from Toppos and promptly crushed under the fist of the Dark Lord Satella, who had been working alongside Rance throughout the war, reducing it to a demonic blood soul. The sequence otherwise plays identically to if RedEye were defeated with the assistance of the Patton Faction, with Patton and his allies arriving to transform Rance Castle into a Toushin Toshi before it is overtaken by the fast-approaching monsters.

If the Dark Lord Extermination Squad did not capture Shangri-La, the Monster Army's primary base of operations, prior to the attack on Rance Castle, Patton and Hunty will become too preoccupied with fending off the constant stream of monster reinforcements emerging from the desert nation to be able to come to its aid against RedEye, forcing the Human Army to sacrifice Rance Castle and retreat to elsewhere after the Dark Lord first defeats Rance. Compelled to defend her master’s castle until the bitter end, Biscuitta elects to stay behind as RedEye captures the location. Upon confronting her, RedEye, inspired by observing the Dark Lord Medusa's Butler Apostle Alefgard, chooses to imprison Biscuitta rather than kill her and, recognizing the benefit of having someone around at all times to ensure that the descendents of the Kestina family do not die without first producing a successor, attempts to persuade her to become its Apostle. Biscuitta refuses to betray Rance, which prompts RedEye to begin eagerly thinking of ways to torturing her into submission.

Following his retreat, Rance immediately organizes an effort to storm Rance Castle to defeat RedEye and rescue Biscuitta. The Dark Lord Extermination Squad confronts RedEye in the castle’s ransacked throne room, where it engages the Toppos-possessing parasite in a battle to retake the lost headquarters. As the fight rages on, Rona approaches Biscuitta, who had been placed into the same cage as her, and offers to allow the head maid to kill her in order to defeat RedEye and save her comrades. After a moment of contemplation, Biscuitta calls out to RedEye while holding a shard of glass to Rona's neck, cutting with it to release a spray of blood as soon as she attracts the Dark Lord's attention. RedEye screams in horror as it witnesses the last survivor of the Kestina family get killed in front of him before detaching from Toppos, collapsing on the ground and ceasing all function. Wasting no time, Rance rushes toward the disabled RedEye and pierces through it with Chaos, reverting it to a demonic blood soul.

The Dark Lord Extermination Squad's sudden victory against RedEye throws the surrounding members of the Monster Army into a panic, allowing them to be driven out of Rance Castle with little difficulty. Afterward, Rance reunites with Biscuitta, who reveals that she had not in fact killed Rona, and had instead simply cut through her own hand to deceive RedEye into thinking she had done so. Biscuitta explains that she had rationalized that other blood descendants of the Kestina family must have existed on the Continent without RedEye's knowledge in the thousands of years it had been alive for, and that its dependence on the Kestinas to live had long since become entirely psychological as a result. Saved from RedEye's control, both Rona and Ian begin working as employees at Rance Castle while Toppos leaves for parts unknown. As it is impossible for the United Human Army to emerge victorious against the Monster Realm after it is forced to abandon Rance Castle, this encounter with RedEye is considered to be non-canon.

Personality and Appearance
RedEye does all sorts of things that can be considered morally questioned by humans but in reality, nothing he does can be considered good or evil since he's mostly a machina with an artificial intelligence following its digital directives. He's been programmed to follow two main actions:


 * Work to Improve its own magic powers.

Everything is done based on those two directives, regardless it's good or evil.
 * Kill anyone that can't help him do that.

Without that into account, RedEye has developed a very basic and linear personality. It hates organic life, those with warm bodies and wants to make the world an inorganic lifeless "utopia" of machines, and enhance its body even further.

RedEye is unintelligent, and has no sanity, it cannot speak properly either, most of what it says is incomprehensible. Despite this, RedEye considers itself to be a genius. He joined the Kayblis Faction, which means he also wants to kill Kurusu Miki and make Kayblis the Demon King. This might be only because he has an intense hate for Hornet and love of destruction. RedEye is programmed to enhance and improve his own magic powers and has been working on it for over 2000 years for it. However at one point he tied with Hornet in a magic showdown, which means she potentially stole his title as the most powerful mage in The Continent. He finds this unacceptable and wants to find Hornet and destroy her with his magic to prove he's the ultimate mage once and for all. This rivalry is completely one-sided though, Hornet does not care at all about being the top mage.

The main body is Toushin Gamma, a 3m tall great robot created by the Holy Sacred Sect. RedEye itself is a gem connected to an eye and some tentacles.

Rona Kestina is his lesser apostle and works under him as his slave. She's nothing but a poor girl subjected to a life of torment. As the last member of the Kestina family RedEye is particularly careful that her life is not threatened, since her death equals to RedEye's death. At some point, when Rona was old enough to conceive a child, RedEye forced a random human to rape her until she got pregnant in order to further expand the Kestina Family. RedEye is eagerly awaiting for the birth.

He's probably been doing this for a long time but the reasons as for why Rona is the last living member of the family is currently unknown.

Abilities
RedEye himself is Lv3 magic user, which makes him one of the most powerful mages in history. Currently only Supreme Dark Lord Hornet is as powerful as a magician as he is (although Hornet is not a mage but a spell-blader). The gem itself commands the magic but it's also attached to a Toushin body. These powerful machines were created by the Holy Magic Sect to be on par with the Dark Lords in combat so, on top of his incredible magic, his toushin body would be more than enough to be way beyond any regular human. He was also level 160 and had reached his cap in the old setting. All these traits make RedEye a Dark Lord on par with the Four Elite Dark Lords, despite not being one himself.

However he's one of the Dark Lords that humans have a higher chance of defeating without the use of the anti-demon swords, Chaos and Nikkou. Since only the gem has the Invincibility field and the Toushin body is the one that grants mobility, defeating the Toushin would render the RedEye immobile and defenseless, unless he attaches himself to something else. However this is still a very difficult task since the Toushin are, by themselves, extremely durable machines.

Its only major weakness is that if the Kestina bloodline dies out, so will it. For this reason it forces the family to reproduce and serve it, it also heavily guards them. Killing Rona Kestina would instantly kill RedEye as well.

Its primary configuration was to steal and learn spells, and has been doing so since he was created.

Personal History
NC???? - Kestina, a technology mage was researching Dark Lords and their powers, after years of research he created RedEye, a parasitic gem with incredible powers.

NC???? - RedEye could attach itself to anything, monsters, giant beasts, and dragon weapons. It was going to be the ultimate anti-Dark Lord device.

NC???? - Demon King Nighcisa heard of the project, and stole the Gem for himself, performing an experiment of his own, Nighcisa poured his blood onto the Gem. It became a Dark Lord. Kestina had bound his bloodline to RedEye, if his family were to end, then RedEye would be rendered null.

GI???? - The Holy Magic Sect create their Toushin robots, machines even more powerful than Dark Lords.

Between GI0420~0452 - RedEye attaches itself to the Gamma Toushin robot, the strongest of the series.

GI0912 - "RedEye Dark Year" occurs, it attaches itself to the control system of the Kingdom of Zeth's Mazeel Line and sabotages their defenses, the Demon Army invades Zeth.

GI0940 - The Hero of the time formulates the "Bomb the Maazel Line" stategy, he defeats RedEye who detached himself from the Mazeel Line and back to the Toushin Gamma to run away.

GI???? - RedEye and Supreme Dark Lord Hornet have an intense battle in an isolated area of the Monster Realm. The clash of the two mightiest magicians leaves such severe collateral damage that the area is reduced to a giant "Death Zone" that constantly ejects Death Ashes that kill anything that enters, even Dark Lords if they are exposed for too long. The magic showdown ends in a tie after they are both forced to retreat.

LP0001 - The Monster Realm goes to a civil war and divided into two factions, the Kayblis Faction and the Hornet Faction. RedEye joins Kayblis due to his intense hate for Hornet, since he can't stand the existence of a mage on par with him.

LP0007 - Attacks Zeth and possesses Anise.

Trivia

 * Since RedEye is just a gem without organs or blood, he's the only Dark Lord that has no means to create Apostles.
 * He's also the only Dark Lord that had reached his cap in Kichikuou Rance.