Kai-125

Kai-125, or simply called Kai, is a major character in the 2022 science fiction series, , based on the video game series of the same name.
She is a genetically engineered super-soldier working on behalf of the UNSC government agency. A member of the Silver Team Spartans, Kai's primary mission is to eradicate the Covenant threat across the galaxy with her fellow Spartans. Following an unsolvable series of events following a confrontation with the Covenant on the planet Madrigal, Kai's life slowly evolved from a mortal Spartan to a much more sentient being.
She is played by Kate Kennedy.
== Appearance ==
Kai-125 is a relatively tall and muscular woman in her thirties. She has big blue eyes, broad head, an aquiline nose with large nostrils, square jaw, big ear and blonde hair which she later dyes with weapon grease, giving it a reddish color. When she is not wearing her Spartan armor, her clothing style is limited to a black suit always worn under her armor.
==Personality==
Due to both her intensive training in the Spartan program since childhood, mental alterations and the addition of a hormonal pill to limit her emotions, Kai has become a disciplined soldier and fiercely loyal to the UNSC but secretly more towards Dr. Catherine Halsey. Cold by nature, ruthless towards the enemy, devoted to her team and especially to John-117 aka Master Chief, Kai does not question the orders given by her superiors and respects the procedure, although she especially trusts her leader more. team due to being brothers in arms. Despite her conditioning, Kai has been shown to possess a higher level of trust than her fellow Spartans, making her curious and quick to become suspicious of the UNSC. She was also the only Spartan to notice the sudden change in Master Chief. Seeing Master Chief remove his hormone pellet would ultimately push her to do the same
After removing her hormone pellet, Kai quickly developed a more human personality, his curiosity growing tenfold, gaining enthusiasm and beginning to feel emotions. She also became more outspoken and direct, accusing Miranda Keyes of viewing the Spartans as machines and criticizing her weak perspective. She remained a loyal soldier but shows some rebellion from her former rigid personality, dying her hair. Gradually, she began to question the true purpose of the Spartans, the objectives of the Covenant and became more suspicious of Halsey. Ultimately breaking her indoctrination, Kai befriended Miranda, seeing her as a bit of a sister, and openly protested when John ostracized her because he considered her dangerous due to her news. emotions, causing Kai to criticize his perspective since he wasn't that different from her now. However, her bond with John would remain strong despite this heated disagreement. At the end of her recovery period, Kai chose to spend time impressing the marines with her physical prowess instead of resting.
Learning from Master Chief the secrets and lies of the UNSC and Halsey as well as the truth about their origins, Kai felt a deep sense of anger and betrayal. When Halsey gave the priority order to neutralize John, Kai challenged the order and then defended John against their two Spartan brothers in arms. She would later admit that she would not have hesitated to fire on them but that she would have felt bad for having done so. Subsequently becoming bitter towards Halsey for his lies, she fiercely hunted Halsey for answers as to her true identity and mercilessly killed Adun for attacking her from behind, showing that Kai still remains merciless towards those she considered her enemies.
Kai's naive nature and poor understanding of feelings led her to doubt John six months later and question his every action and leave her vulnerable to James Ackerson's manipulation, slowly turning her into his loyal pawn. As an instructor of human Spartan recruits, Kai is strict and cold towards her subordinates. Ackerson's influence ultimately transformed Kai into an impassive and submissive Spartan, with no qualms about lashing out at John despite their long friendship. However, as she brutally beat a John who refused to defend himself, the part of Kai who had always trusted John resurfaced and she was finally able to see through that Ackerson had only been manipulating her.
==Skills & Abilities==
Due to the multiple genetic and physiological enhancements she underwent upon joining the Spartan program, Kai possesses attributes superior to any normal human. 
*Enhanced Strength: Kai possesses superhuman strength, capable of overturning Covenants larger than her, of lifting a military jeep with three marines in it by rope, and of knocking Vannak down with a knee strike about ten meters. She also managed to block automatic doors and reopen them with the strength of her arms.
*Enhanced Stamina: Kai's endurance exceeds that of an ordinary human, being able to fight for long periods of time without showing fatigue. She was able to reach Hasley's ship in spring and was only out of breath after jumping from the crashing ship.
*Enhanced Durability: Kai proved resilient enough to survive an assault by several Covenant against her, although she was wearing her armor and still suffered severe injuries. When Adun hit her with a metal object on the back of the neck, Kai felt the blow but didn't have the slightest bruise.
*Enhanced Speed: Kai is much faster than a normal human, running so fast that she has outpaced marines running for longer as well as the jeeps chasing Hasley.
*Enhanced Intelligence: Kai's cognitive abilities are high enough to give him the skill to assimilate understanding of weaponry and partial Covenant language.
*Expert Fighter: Trained as a super-soldier, Kai possesses formidable hand-to-hand skills, allowing her to defeat Covenant soldiers.
*Marksmanship: Kai excels in both close and long range shooting. Within the Silver Team, she is the elite sniper.
== Equipment ==
* Spartan Armor: Typical Spartan protective armor serves as protection for Kai against Covenant weapons but does not protect her indefinitely from frontal attacks. The armor is also designed to be proof against the Spartan's own arsenal.
* Sniper Rifle: Kai's main weapon. Kai uses the rifle to shoot down enemies from a distance while she is also capable of using it at close range to reach the Covenant's vital points.
* Guns: Kai uses a pair of pistols as a secondary weapon in combat but she rarely uses them.
==Biography==
Like her future Spartan comrades, the one who would become Kai-125 was kidnapped at six years old by the UNSC after being selected by Dr. Catherine Halsey and Captain Jacob Keyes who also replaced the children with clones. The children's memories were then altered to believe that they joined the UNSC of their own free will. Under the intensive Spartan program, the number of candidates gradually declined until only Kai-125, John-117, Riz-028, Vannak-134 and Soren-066 remained as Silver Team while other Spartan teams were founded.
The key moment that formed their team was when the candidates had to face men with clubs at the height of their training. Most of the kids got too scared and ran away, but the future Silver Team stayed to fight together, eventually losing anyway.
As part of their training, the Silver Team was each assigned a pet, with Kai receiving a puppy named Cody, as part of the study of the strategies of the wolf pack, with the losers having to kill their pet. Kai has been on the winning team nine times before losing.
===Halo===
====Season One====
In 2552, discovering the Covenant presence on the planet Madrigal, the Silver Team engages in combat in the besieged Rebel outpost, with Kai taking up position on the ramparts to take down the enemy from a distance. On the threshold of battle, Kai is dislodged by Covenant fire and finds herself surrounded but John manages to eliminate the group with a machine gun. The Spartans emerge victorious and begin stalking the enemy landing zone, leaving the now devoid outpost of Covenant as rebel fighters behind them. They discover the Ghost Covenant moored on a cliff which Vannak and Riz go to secure while John and Kai go to explore the cave below. Aside from the Covenant wall remains, the duo discovers an unknown relic that the Covenant were in the process of extracting. Upon contact with the artifact, John causes it and the paintings to glow and enters a trance state until Kai snaps him out of it. A Covenant soldier who was spying on them took the opportunity to flee the cave, but not without being chased by Kai and John. The fugitive escaping the Spartans, John orders his team to return to Reach with the Ghost to have it analyzed while he returns with the artifact on the Condor, to which Kai wants to accompany him but he refuses. Kai then says it's against procedure, only for John to reiterate his order, which she doesn't object to.
Some time after their return to Reach, the three Spartans are mobilized to intercept Master Chief when he arrives at the base due to his sudden refusal to execute Kwan Ha Boo, the only survivor of the Madrigal outpost, by order from Admiral Margaret Parangosky but Halsey overrides the order and instructs the Spartans to protect John at all costs, even if they have to shoot the marines as a result. With the Condor on the ground and surrounded by UNSC armed forces, the Spartans prepare to open fire on their own allies, but the second activation of the artifact disables power to the entire base, allowing the Master Chief and Kwan to escape and preventing the Silver Team from reaching the inevitable. While Master Chief is still on the run, Kai questions his actions, having grown accustomed to it always being a plan, except this time none of the three have been informed and Halsey insists that they find him. After hours of fruitless searches in space, it is finally John who comes to hand himself over before being brought back to Reach handcuffed by his comrades.
The entire Silver Team quickly reforms, with Kai asserting their complete trust in John since they were children. The trio then meets Cortana, an AI created by Halsey installed in John's brain, who presents herself without warning as logistical and tactical support to the Silver Team, gaining little interest from the Spartans. Kai remains especially skeptical in the alteration of the Master Chef's personality and in the evening, she secretly witnesses John removing his hormonal pellet with the help of Cortana.
Driven by curiosity, Kai deliberately removes her pellet in the same manner as John, using a knife to pierce the bottom of her spine and remove the device. She avoids sharing this information when Riz comes across her in the locker room. As she cleans her gun, her rising emotions cause her to smear the gun's grease on her hair, satisfying her. Summoned by Dr. Miranda Keyes for biometric testing on the mysterious Covenant artifact, Kai develops a certain curiosity about the artifact that Miranda almost notices. Last for the individual test, Kai removes his helmet as instructed and Miranda is surprised by his dye, not expecting that in the least. Kai comes to affirm by intuition that Miranda is not at all interested in the Spartans and after having mentioned the respective qualifications of her partners, declares that since Miranda only sees them as machines she will have to dig a little deeper to understand them. She then touches the artifact casually before retreating since the tests are inconclusive.
In the research lab, Kai begins playing with Needler, his Covenant weapon, much to Miranda's frustration. Indirectly, the Spartans' playful exchanges on Covenant language give Miranda the means to translate an intercepted communication. As their relationship subsequently becomes more positive, Miranda opens up a little to the Spartans, revealing to them that her mother who is none other than Halsey always stopped her from approaching the Spartans, leading her to wonder if she preferred them to her because they were probably funnier. Kai asserts that they know how to have fun, then referencing the wolf strategy training that left Miranda baffled. Later alone with Miranda to decipher the Covenant intonations, Kai comes to the conclusion that one of the words is "keystone". She suddenly becomes more playful with the young girl, discussing her hair dye that she is starting to regret. Miranda thinks it must have been an act of rebellion, which Kai agrees with. The next word they decipher is "sacred ring" but Kai concludes that it is "Halo". Miranda asks her not to spread the word but Kai has no problem keeping it a secret, seeing Miranda as a sister now, the latter comes to think that Kai is an unusual Spartan before warning him that it would be very frowned upon by Halsey.
Deployed on Eridanus II following the discovery of the other half of the artifact, Kai questions Vannak during the briefing on the motivations of the Covenant but her fellow Spartan only responds with answers that are too singular. John ends up noticing Kai's dye and as he already guesses the why and how, takes her aside to find out when she removed her implant. Seeing Kai become more emotional causes John to doubt her combat effectiveness and deems her dangerous so he reassigns her to the science ship. Outraged, Kai criticizes the decision on the grounds that John may be just as dangerous as she is.
Suddenly, the Covenant launches an attack on the dig site, having also found traces of the second artifact. Kai tells Miranda to fly the ship due to lack of air support, so Miranda sends Kai back into battle instead. As the destructive confrontation heats up, Kai begins to suffer from usual stress as she sees the marines dying or drowning in their blood around her, destabilizing her before being knocked to the ground by an explosion. Injured, she finds herself at the mercy of the Covenant forces until Master Chief comes to her rescue, killing the attackers and beating the last one to death, only stopping when Kai tells him he is dead. A subsequently unconscious Kai is evacuated by Riz and Vannak.
On the way back to Reach, Kai suffers excruciating pain from her injuries, forcing Riz to inject her with numerous sedatives to ease her pain. A John having lost all trust in Halsey after discovering her dark secrets later comes to talk to the recovering Kai, not yet telling Riz and Vannak because it is not the right time. She begins to wonder if her parents thought she was dead all this time or if they are even still alive, finally seeing through Halsey's lies, although John confirms that the only thing true is that they are Spartans. Soon restored and with the Spartan program coming under Miranda's authority following Halsey's dismissal, Kai notices that Vannak and Riz still retain some loyalty to Halsey.
A few days pass and Kai has recovered enough to take pleasure in displaying her physical strength under the admiring gaze of the marines who also place bets on it, lifting increasingly heavy objects such as a rope. jeep with three people in it. The next day, Halsey sends a message exclusively to the Spartans' channel except John, telling them that the artifact has compromised high command and initiates Protocol Z to force them to follow her orders exclusively. When Kai questions John's absence, Halsey responds that the Master Chief is compromised and needs to be subdued and taken out of Reach, but Kai doesn't buy that easily and tries to convince her brothers in arms that he there is a better way. Unfortunately, seeing that Kai no longer has the hormonal pellet, Halsey tricks Vannak and Riz into attacking Kai and incapacitating her from harming them.
Kai quickly regains consciousness, handcuffed to a counter and manages to free herself by breaking the counter with the strength of her legs and her armor but remains restricted by her handcuffs. While running through FLEETCOM, she orders a marine to prevent Halsey's ship from taking off, even shooting it down if necessary. Kai arrives in time to save John from being executed by Vannak, knocking down the heavily armored Spartan with an aerial attack and using Riz's attacks to free her hands and also knock Riz to the ground. The divided Spartans end up on the tightrope, guns pointed and ready to fire, only for the shockwave unleashed by the artifact upon physical contact with the human-Covenant infiltrator Makee to knock everyone back. earth. Kai has barely recovered from the explosion when she is held at gunpoint by Vannak and Riz to force John to surrender. John tries to tell them the truth about Halsey but their indoctrination prevents them from hearing reason until Jacob Keyes confirms the Master Chief's words while recognizing his own involvement in their kidnapping. While the two Spartans finally accept the truth, Kai leaves them and John to try to prevent Makee from running off with the artifact while she goes to take care of Halsey.
Arriving to see Halsey's ship taking off and refusing to let her get away with it, Kai runs fast enough to jump onto the ship and force entry through the ventilation. She corners Halsey and her assistant Adun on the bridge then takes off her helmet and begins fiercely demanding Halsey to reveal who she really is. Distracted by Halsey assuring her that she is who she was supposed to be, Kai is hit in the back of the head by Adun with a metal stick. Only angrier now, Kai grabs Adun by the throat and smashes his head into a hologram generator, killing him instantly. Halsey takes the opportunity to escape via an escape pod despite Kai's efforts to capture her. With the integrity of the ship's hull compromised, Kai does her best to keep it aloft but a catastrophic landing is ultimately inevitable. Luckily, Kai managed to jump out of the ship in time and grab onto the edge of a takeoff platform.
Despite its unfortunate setbacks, the Covenant's trail is found on Raas Kkhotskha and the Silver Team is sent there. Before takeoff, Kai asks Riz and Vannak if they were really going to shoot them earlier and when they answer that they would have, she gets offended but when Vannak asks in turn if she would have shot them on it, she answers yes although she adds that she would have had remorse. Entry into the Covenant space system puts the Condor at great risk due to unstable magnetic fields. Reaching the atmosphere of the enemy planet, the Silver Team jumps from the Condor in the sky and neutralizes the sentries one by one before advancing towards a temple. An ambush by Covenant forces catches the Spartans off guard and when Makee activates the keystone made of the two artifacts to give the location of the Halo, John falls into a trance state he cannot shake off, prompting Kai to shoot Makee down with one shot in the heart to free him. The situation ends up turning against the Silver Team on the verge of defeat until John lets Cortana take complete possession of his body to both save his comrades while recovering the keystone. The Spartans then return to the Condor and leave Raas Kkhotskha, Riz having been seriously injured. Kai tries to find out if it's still John behind the Master Chief's helmet but he doesn't respond.
==== Season Two ====
Six months after the Raas Kkhotskha raid and Cortana being removed from John's brain, the Silver Team is busy evacuating the planet Sanctuary as a Covenant attack looms. Kai appears to be on good terms with Vannak and Riz again, especially since the two also retired their pellets. The evacuation only narrowly succeeded after the Covenant assault, leaving the planet glazed. Back at Reach Base, the Silver Team meets Halsey's replacement in charge of the Spartan program, James Ackerson, for whom Kai quickly takes a dislike. Aside from a small spat with Cobalt Team, Kai notices that John hasn't seemed to be doing well for six months, also disapproving of the pressure he puts on Riz during the tougher training sessions in anticipation of 'a Covenant attack he thinks will be even worse. During one of their conversations, John states that he saw Makee at Sanctuary, to which Kai reminds him that she was the one who killed her.
Summoned by Ackerson about John, Kai does not let go of any argument against John, seeing clearly into Ackerson's motivations since he has continued to restrict the Silver Team since taking office. She adds that she is personally worried about everything that John has to endure because he is Master Chief, not counting what he has been through recently and she is also not sure that he will ever forget the past. . Ackerson asks her if she is also worried about John's mental health but she says no, judging him the best of them all. Later, John diverts the Condor's route with his teammates in order to rescue the Cobalt Team who never returned from their mission to Visegrad Relay on Reach. Skeptical, Kai asks what exactly the mission is and John warns him that the Covenant are on Reach.
Arriving at the relay, the Silver Team searches the premises without finding the slightest trace of Cobalt Team. They are suddenly ambushed by a UNSC squad who came to arrest them for the unauthorized mission. The Spartans refuse to surrender while being held at gunpoint and John ends up virtually ignoring the captain's authority, only to find no trace of Cobalt as he wanted, leaving Kai doubting his ways. Returning to Reach, the four Spartans are severely reprimanded by Keyes and put on foot until further notice, just as Keyes insinuates that the Colbat Team has only been redeployed elsewhere but John does not swallow anything. Kai, Riz and Vannak are upset that John lied to them and his distrust of Ackerson doesn't help matters. Kai tries to reason with John because she doesn't feel like he's thinking straight right now, but the tension ends up boiling so much between them that Kai ends up giving up. She talks with Ackerson again, trying to defend John's choices despite worrying about his mental health while suggesting she be the only member of the Silver Team active in the war effort. Unfortunately, Ackerson quickly confused her psychologically.
Following the fall of Reach in which she did not participate, Kai is located on Onyx, apparently in command of an army of recruits humans Spartans. After the conclusion of a combat simulation for the Spartan recruits, Kai leads the debriefing, noting their mistakes, before being approached by Corporal Talia Perez, a survivor of the recent attack on Reach which apparently led to the death of the whole Silver Team, who tries to protest against the simulated surprise attacks but Kai replies that war is unpredictable and that having survived a battle only makes one lucky.
In the middle of a training session because she couldn't sleep due to her guilt over the loss of her teammates, Kai is approached by an Ackerson trying to convince her that she doesn't have to punish herself and that she will succeed in making recruits real Spartans. Later, as the recruits pass the simulation, Talia tries to tell Kai that the exfiltration moment was too easy, only for Kai to respond to savor her victory while the moment is right, although she begins to suspect something.
When a John trying to survive the fall of Reach invades the base, Ackerson manipulates Kai by insinuating that John is now working with Makee, using the stolen second half of the artifact on Reach to distort the Spartan's judgment. As soon as the two Spartans cross paths, John announces that Vannak is dead and that Riz is gone but a Kai in Spartan armor is not able to understand that she is making a mistake, convinced that John has done something wrong. She states that she will stop him, to which John admits his disappointment that their friendship likely no longer means anything to her besides her submission to any orders. Kai then brutally attacks John to subdue him but he refuses to counterattack, letting Kai continue to brutalize him no matter what he tries to tell her about Ackerson and Parangosky's true motivation. With John still refusing to give in, Kai prepares to deliver a killing blow that even John is willing to let her do in front of the security camera. In the end, Kai just knocks John against a wall and leaves with a foggy mind.
Thinking back to John telling her during the confrontation that she needs to see who Ackerson or Parangosky really are, she ends up confronting Ackerson first about the last simulation that she realized was intentionally doctored by him before realizing that he intentionally left Reach prey to the Covenant by taking away the Silver Team's armor, reaffirming her unfailing trust in John. Finally seeing Ackerson's true manipulative and despicable nature, Kai quickly goes to help John.
When Captain Briggs' men refuse to shoot John, Briggs tries to execute him herself, only for Kai to knock her out from behind. The two Spartans move forward together but both retain mutual resentment towards each other over the latest events, with John blaming Kai for choosing the side of those who wanted them dead while Kai claims she made a mistake like a human.
They confront Ackerson who John nearly kills, to which Kai has no problem letting it happen, until the culprit reveals that the Master Chief's armor can only be retrieved through biometric access. Ackserson also reveals to them that Parangosky plans to use the Spartans-3 as cannon fodder against the Covenant through the Spyke system so that at least neither side seizes the Halo, however this does not make the duo any more empathetic to his mistakes. Arriving in the storage room, John looks at Vannak's armor wistfully, confiding to Kai how much he regrets not being able to save him. Once Ackerson is fired so that he can denounce Parangosky's lies at the cost of his own deserved downfall, John and Kai leave on their own, Kai not wanting to let her people die in combat against the Covenant and John not wanting to let the Halo end between the wrong hands, both wishing each other at least good luck. As the troops prepare, Kai tells Perez to get it out of her head that John is coming.
Kai barely offers a pep talk to her comrades when her shuttle is shot down, propelling everyone into space. Despite this tumult, she manages to reassure a panicked Perez and manages to reach a corvette with Perez and a small number of Spartans while a colossal armada ship is heading towards Onyx, but Kai remains focused on the initial objective. The infiltration on board goes badly, with the Covenant ambushing the Spartans and killing many of them. The UNSC fleet finally arrives as reinforcements, only for the flagship Covenant to destroy part of it, leaving Kai and her team soon overwhelmed. Running out of ammunition, Kai and Perez start firing plasma cannons but Perez ends up injured and the team almost entirely decimated. At Perez's begging, Kai tries to inject the Spike into the onboard computer, only for Master Chief to save them all at the last moment.
Remaining aboard the corvette while the others evacuated to the Condor and John reached the Halo, Kai took command and sacrificed herself by crashing the corvette into the flagship. Even so far away, John manages to sadly feel Kai's death. Her heroic sacrifice allows the UNSC to gain the advantage. However, her body was found to be intact as well as her armor holding up despite heavy damage, leaving Kai's true fate uncertain.
==Trivia==
*Kai-125 is a character created exclusively for the series and has no video game counterpart, although she can be considered an equivalent to Linda-058, a female Spartan also adept with a sniper rifle , although the main difference is that Linda is more solitary while Kai is overtly more social.
*Kai is the third biggest of the Silver Team, only surpassed in height by John and Vannak while being biger than Riz.
*"Inheritance" and "Reach" are the only episodes where Kai does not appear.
*Ironically, while Kai remained the only Spartan to stay at Master Chief's side when Vannak and Riz were manipulated by Halsey, Kai is the only Spartan to turn against him in the second season.
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