Reign (Samantha Arias)


 * For the episode, see .
 * For her human personality, see Samantha Arias.

"I am from the time before fathoming. Born to cleanse the scourge and deliver the awakening. I am Reign."

- Reign to Supergirl

Reign (1979–2018) was a Kryptonian Worldkiller. After Purity and Pestilence awoke, Reign noted that her human self Sam was much stronger than she thought. Instead of continuing their fight for control, Reign offered Sam strength to protect Ruby; with that, Reign was reborn with the perfect fusion of Sam's emotions and Reign's programming.

Early life
According to a Kryptonian hologram, she is the culmination of years of Kryptonian research. The same hologram appeared as an apparition and stated that she was born from Rao's fire. On the day of Krypton's destruction in 1979, as a baby, a group of hooded figures placed her in a Kryptonian escape pod and sent her to Earth, saying that she would grow strong there and that she would then reign. According to Thomas Coville, the Worldkiller Reign's legend/prophecy existed long before the book of Rao.

When her pod landed on Earth, Patricia Arias found her, took her in and raised her as her daughter. Patricia took her swimming on Mondays and Wednesdays. At some point prior to turning 18, Samantha was kicked out of the house by her adoptive mother for being pregnant. Her pregnancy also delayed her manifestation as the Worldkiller, "Reign", and upon the delivery, Sam was awed by the new life she brought from within herself and into the world that Sam then vowed she would always be there for her newborn child - no matter the odds. Experiencing ups and downs after having her daughter, Ruby, and subsequently raising her without a father to support them as a family, despite this, Sam pulled through by herself as a single mother from one job and city to the next to ensure that she and Ruby would have a future together. Sam would later be acquainted with Lena Luthor, who finds her working so early and practically alone in the office of Sam's company, in which she served as Junior VP and was just taken over as part of a merger with LuthorCorp, that Lena came as representative to, for the assimilation together of both their respective companies. From then, Sam caught Lena's attention at once with the former's unshakeable resolve and dedication to her occupation leading to an exclusively professional but well-intentioned working relationship between the two of them since the latter would not regard Sam on the level of a legitimate friend, together with Kara, until much later on when the three of them acquaint themselves together.

Sam receives Reign's memories
Sam rejected this instantly, saying she was a good person with a life and a daughter. The hologram coldly stated that Ruby was an error who delayed the full manifestation of her powers. Sam was angered by this and snapped that Ruby was not an error. The hologram assured her that she would eventually forget about Ruby and all of her other mortal trappings. Sam rejected this, saying she would never become that person. The hologram told her that it was time for her to fulfill her true purpose as Reign. Sam screamed and doubled over in agony; as it turned out, her powers were manifesting in full. She suddenly stopped, opened her eyes and raised her head in a calm, almost peaceful manner as she stood up. When she looked forth her eyes they turned a bright red, she fully became the world killer Reign and she eerily stated "I have awoken" in ancient Kryptonian.

The rise of Reign
Sam had awakened from a nightmare in her bed when Ruby entered. Ruby asked about her trip, but Sam had no memories of it. Sam and Ruby were invited to Kara's Christmas party, in which Sam was late with the cupcakes. She had a brief interaction with Alex before she got some wine and started to talk with Kara and Lena. She and Kara then started teasing Lena about how she liked James Olsen and he liked her back, although Lena denied the claims. Kara then told them about how she was happy to have them as her best friends, to which Lena and Sam return the sentiment.

The next day, Sam was working while she watched the news and heard a mention of a gang that had been selling drugs and killing by the docks. She was angered by this and when Ruby came in and the two argued about how Sam wasn't going home with Ruby on Christmas Eve. Sam calmed her down by remembering a previous Christmas that they had spent on the road together, and reminded her that if they have each other, everything would be okay. She then gave Ruby her present, which was a necklace with the Supergirl symbol; somehow knowing that the symbol stands for “stronger together”, Sam tells Ruby that was how they are together as mother and daughter — stronger. Reign took control over Sam soon after that night and killed the gang members that were mentioned, as they were in the middle of selling drugs in a clandestine transaction, down by the waterfront.

Sam heard about an assassination attempt on Lena, went to CatCo and asked her about it. Lena stated that she knew it was Morgan Edge pulling the strings but had no proof of it. Sam looked at the picture of Edge and coldly stated that he should be dead for what he tried to do. Reign then took over and exited, ripping open her buttoned shirt to reveal the Worldkiller’s suit with its crest upon her chest, and later attacked Edge's Christmas Party that night, inciting havoc in his office; however, Edge escaped by hiding in a panic room lined with lead. Unable to spot him through the material, Reign wordlessly left and the next day, Edge all but blamed the chaos on Supergirl.

After hearing about the murders and attack on Morgan Edge, Supergirl, intending to draw this new and mysterious Kryptonian out, left her symbol on the roof of CatCo, upon which Sam as Reign, fully-suited, later arrived and waited for her. Not recognizing each other (with Sam’s mind overtaken by Reign, voice distorted and wearing an obscuring mask to cover her physical identity, and Kara assuming her superheroine persona) through their mutual connection with Lena Luthor, the two conversed in which Reign introduces herself and tells Supergirl, who puts up a strong front as advised by Alex, of her own dark origins and the purpose she is now enacting — that she was dispensing justice on Earth, starting from that very city. Supergirl, however, disapproves of how she is doing it and then announces that she was not going to allow her to keep killing. She approaches nearer and extends to Reign the option of surrendering, there and then, or else she would be forced to assert her will and render the latter into a state where there would be no other choice for her but that.

Briefly amused, Reign remarked Supergirl’s hubris, as she also fearlessly lessened the distance between her and the latter so that the two of them are now practically within arm’s reach, and then derided Kara’s borderline hypocritical fore-bearers — who could have done better on Krypton long before the planet’s destruction, but did not until that very last moment of its destruction. She then reciprocates the offer she just received, threatening to send the other Kryptonian to the same extinction where the said fore-bearers now are if she does not stand down. Supergirl brusquely refuses this, causing the World killer to momentarily show some regret for what she was about to do, coldly stating that she would dispense her justice on the former then. Supergirl, in turn, dares Reign to drive her point home, leading to Reign striking first by tackling the heroine and then flying her into the sky, culminating with the pair engaging into a brutal fight that rages throughout the city.

As the fight goes on they initially seem to be of equal strength, throwing and receiving blows that shifted back and forth the tide of the skirmish between the two of them and flinging the two aliens from one part of the city to the next, but Reign eventually proved to be much stronger than Supergirl, and made her bleed. She even wounded and injured her so much that Supergirl gradually became powerless against her in humiliating defeat. Though Supergirl — felled and on her knees — precariously claimed that she doesn’t fear Reign, the latter knows better and points out that neither of them were gods and devils, but simply rather that one was to be judged by hand of the other. Emerging victorious, Reign stated she will continue her way of justice, as she picked up her defeated adversary by the front of Supergirl's suit, before dropping Supergirl from the edge of the building they were at and onto the concrete below. Pleased with her victory, she then flew off and presumably returned back to Sam's home.

That morning, which was Christmas day, Ruby came downstairs calling for her mother and happily announced that it was Christmas. Sam, who was dressed all in black, with fingers and thumb twitching on one hand, whirled around.

Against a Legion
Sam and Ruby are next seen playing together in a nerf-gun battle inside their house, with the former, due to her lack of coordination (and perhaps still rearing from her strife with Supergirl), sending a few household accessories crashing from atop one of the furniture there. Right before the time came for Ruby to go, Sam’s eyes fell upon the printed news, with front cover illustration showing herself as Reign and how the rogue Kryptonian was on the loose, in lieu with Supergirl being M.I.A.; Reign herself instantly took over, causing Sam’s eyes to flash red.

She returns to the Fortress of Sanctuary, where the AI hologram congratulated her on her victory over Supergirl, but is quickly informed that there was still much for her left to do in preparation for the awakening that she is meant to enact. After inquiring of what the next steps are that she must then take, she was next seen speed-flying in pursuit of a getaway car, snatching one of the gangsters in it and delivering him into CatCo, where she demanded they televise her message. Lena who was there with James, however, defies that causing Reign to shoot a smile at the feisty Luthor for talking back at her in that manner. But still, Reign would not be dissuaded from her purpose of coming there; she instructs one of the nearby cameraman to aim his contraption at her and began broadcasting her message, in which she was basically waging war against humanity's unlawful elements.

And true enough, after peacefully leaving from CatCo, Reign began to target criminality in all its forms, along with those who protect them from her, taking down a drug cartel and then later the cops who stood in her way after seeing for themselves the brutality of her measures. She later descends upon what appeared to be a bank robbery, warning the robbers of what she will now bring upon them for their conduct. It quickly becomes clear that the whole thing was a set-up orchestrated by the D.E.O., with its field operatives — as “robbers” and “cooperatives” alike — emerging from their disguises, spearheaded by J'onn and Alex, to corner Reign and implement the Sundown Protocol that sent a barrage of anti-Kryptonian weaponry and tactics against the world killer, ranging from red sun grenades to sonic weapons, heavy restraints and, of course, Green Kryptonite still available in the D.E.O.'s possession with Alex herself mounting the substance around Reign’s neck. And for a time, the Protocol seemed effective, weakening the disguised Sam enough to bring her down on her knees; but through sheer strength and willpower she overcomes the odds stacked against her, lashing out of her restraints and inflicting injury on Alex's leg, leaving the agent at Reign’s mercy and forcing her Martian employer to intervene, striking the world killer away using his own extra-terrestrial strength. Seeing that her enemies were well-prepared for her arrival, Reign took off and escaped through a window.

And in retaliation for the ambush, as message, Reign later stages a one-woman invasion at the correctional facility in Albatross Bay where, after striking down those who stood in her way, eventually found the holding cell wherein Thomas Coville was being kept and, entering the containment, Reign finds him kneeling down and showing deference before her Juru glyph that he made on one of the walls there; addressing her as the one who would bring forth the renewal and reciting — in English — some archaic Kryptonian passages that concerned the Juru, intriguing Reign enough to inquire as to how Coville knew of them. The imprisoned cult leader turned to face her and states that he only wishes to be delivered from her judgement and into salvation, causing Reign (who, by all accounts, was prepped to eliminate him then and there) to consider sparing him when Coville claims he could be of service to her cause. But before he could receive the worldkiller’s answer, the blaring sound of Bon Jovi's "Livin' on a Prayer" roared outside.

Leaving Coville to investigate, Reign (impressively) busts through a prison wall and realizes that the loud and exhilarating music was intended to draw her attention by those who have come to challenge her after tracking Reign to the prison that she was just terrorizing. Spotting Imra Ardeen and Mon-El, side-by-side, the Bon Jovi song was revealed to be coming from a highly-advanced 31st Century interstellar vessel emerging from the edge of the bay where the prison was at. Maintaining her composure, Reign says to the alien couple that they shall not interfere with what she was trying to usher, but the latter two responds otherwise.

The three of them then proceeded to fly into the sky where, with the Legion ship backing Mon-El and his wife, they got into an aerial battle where Braniac 5, who was piloting the ship, aimed the vessel’s armaments at the world killer, sending her crashing back to the prison but has since then been able to defend herself against the ship’s artillery fire — deflecting one such back to its source and reaping damage upon the ship that Mon-El decides to take the fight back at ground level, lest their support vessel (in where Kara is currently unconscious and convalescing; not to mention the other Legion members who were still in hypersleep) sustains even more damage, with the Daxamite’s wife joining him. And from there, Imra headed the attack, using her telekinesis to levitate several lifting weights found at the prison’s workout yard and sent them at Reign’s direction, who promptly counters using her heat vision to blast the incoming weights away.

And as she did away with them, one by one, Mon-El proceeds to pull out, from the sleeve of his Legionnaire suit a small syringe of concentrated green Kryptonite and ran towards the preoccupied Reign. Unfortunately, the world killer sees him coming and, in response, blew out a super-cold mist at him; shifting to the defense, Imra concentrated to form a round, telekinetic barrier around her husband that was quickly engulfed by Reign’s freezing breath, sparing Mon-El from the cold but also trapping him from within the shell of ice produced from the clashing of powers between the two alien women, momentarily surprising Reign. She then walks up closer to engage them in melee, but was blocked in her path by J'onn who grabbed her and uses his Martian intangibility to phase with Reign down into the earth in an attempt to trap her there; but the masked Sam violently fights back even whilst being phased through subterranean levels, sending the two aliens back to the surface — both with significant injuries to themselves.

But in spite of that, Reign was quick to recover, spotting Imra heading to the side of the ice-imprisoned Mon-El and punching her several feet away. Stating that her Imra’s desire to safeguard sinners makes Imra one herself, Reign was about to finish the job when she spots Supergirl, seemingly fully-recovered and hovering right next to the Legionnaires’ ship, much to her surprise. Reign expresses that she thought she finished off the other Kryptonian in their last battle, and Kara deflects this with bravado and had the Legion’s vessel fire upon the ice sphere, liberating Mon-El, while she herself soared down upon Reign and bringing the two of them crashing.

And again, the world killer was the first to get back up on her feet; she stalks Supergirl, who was still upon the paved ground and trying to clamber up herself, but appeared to still be frail from recuperating in one of the Legionnaires’ rejuvenation tanks and has yet to truly return to her full vigor and power. Edging and menacingly looming over the latter, Reign reaches down and grabs a terrified-looking Kara (whose facial veins glew a disturbing green) by the shoulder declaring that she will now purify the Last Daughter of the House of El free of her sins. But yet to surrender, Supergirl swung her arm — stabbing Reign with another syringe loaded with refined Kryptonite, like the one Mon-El pulled out, right around the jugular of her neck’s left side and revealing that the reason why green veins were erupting on Kara's face, and why she appeared already weakening this soon after entering into the fray, was because she had the second syringe clutched in her hand and was waiting for the masked Kryptonian to get near enough for Kara to not miss when she stabs and shoots Reign with its contents.

The plan works, and Reign instantly began to show signs of her own might diminishing, with green veins now creeping and spreading around her neck from where Supergirl stabbed her. Realizing that the tables have turned, Reign flies off and flees, leaving Supergirl and her allies at the penitentiary. Later on her back, she is seen in her Fortress, writhing excruciatingly for a while upon its interior foundation until her own bloodstream forcibly expunges the weakening element from her system and ending her pain. Getting back up again, she looks around the abode and spies on the syringe that Supergirl used to render her into such a wretched state, with the world killer inadvertently bringing in with herself when she flew back into the Fortress to recover. Cautiously approaching to inspect the implement at a safe distance, Reign gave a small, audible gasp and rounded up when the hologram called her from behind, inquiring as to what has occurred; respectfully bowing down, Reign meekly confesses that Supergirl bested her, but not alone since the latter had allies that Reign did not anticipate — outnumbering the world killer, thus her defeat this time around.

Not remotely shaken, the hologram informs Reign that she has friends herself, confusing the latter. The hologram then discloses that the are other world killers, besides Reign, spawned by the Juru, and that recruiting them could even the odds in Reign’s favor; this elicited an indignant reaction from Reign, furious that knowledge of her own brethren was withheld from her until now, and the hologram simply stated that the world killer has not proven herself up to that point, but now Reign has. And now that she is aware of her kindred, Reign must now find them to help set into fruition their grand agenda.

Reign then realizes that there was another person in the Fortress of Santuary with her; Thomas Coville, the same man she contemplated into extending mercy to while back at the Albatross Bay penitentiary. Appearing from behind the world killer, Thomas offers his assistance in bringing together all of the world killers, since his knowledge and experience on planet Earth could prove beneficial for their upcoming endeavor. The A.I. hologram then states the House of El's motto, which Coville solemnly says in English.

To Fort Rozz
She and Ruby are later seen visiting Alex, still recovering from the leg injury that Reign inflicted on her in her loft with Kara leading the way. And because Sam has to go on a business trip on L-Corp’s behalf and Ruby’s babysitter is unavailable for the extent of the trip, she was more than happy and willing for Alex to briefly babysit Ruby, throughout the day, while Sam was away. Sam was next seen talking to Lena at the L-Corp CEO’s office, with the latter giving last minute instructions to her acting CEO. Promising satisfactory results upon her return for her employer, the two of them hugged before parting ways; but as soon as Lena left, Sam ominously heard some Kryptonian phrases that only she alone could hear, causing her eyes to flash crimson and Reign to emerge, punching and dealing noticeable damage on her desk.

Reign, fully-attired, later returned to the Fortress of Sanctuary, where the AI hologram demands as to why she came late and the Worldkiller explains that the human side of her being, Sam, is growing stronger. Strong enough that Reign was beginning to notice the periods of time, in which she is allowed control over Sam’s body, growing shorter and lesser (if not fluctuating in duration) overtime — despite having once been told, on their first meeting inside of the Fortress, by the hologram that this “weaker” side of Reign will eventually become irrelevant, leaving only Reign in dominion. The hologram chides her, saying that Samantha should be no hindrance for what sought to deliver was of greater stake than someone so mundane. Reign apologizes and agrees, stating that her main priority right now must be to gather the other Worldkillers still dormant on Earth.

The hologram counters that notion, however, informing Reign of an alternative mission that is just as important as Reign's gathering: the Fortress has detected a signal coming from Fort Rozz. Apparently, the prison has detected the presence of Supergirl and her allies docking into the Fort as it orbits around a blue star. Baffled, Reign inquires of their purpose for coming to the abandoned alien prison and the hologram surmises it as to gain information on the Worldkiller since a prisoner being held there, Jindah Kol Rozz, has extensive and intensive knowledge of the Juru, having once served as a priestess to their people. And with Jindah’s knowledge extending far back from long before Krypton’s destruction, Supergirl's faction attaining that information could have serious repercussions to both the Juru’s legacy and plans, worrying Reign who was then instructed by the hologram to come after the expedition to Fort Rozz, providing the Worldkiller with a Kryptonian space pod of her own that will transport Reign to the prison.

That pod would later be spotted coming entrance into the prison’s docking port by Gayle Marsh a.k.a. Psi and Imra Ardeen from inside of the Legionnaires’ ship, after the former psychically detected Reign’s arrival, despite the D.E.O.-issued psionic-interfering headband she was made to wear that hampers most of her mind-based powers (just enough to keep Psi from transmitting, but not so to prevent her from receiving). Soon after disembarking into Fort Rozz, she stumbles upon Jindah and Supergirl, with the former deriding the latter for “living in the light” for so long and thus know nothing of true darkness that belies in every living being — the same darkness that the Juru languished in when they were discredited and erased from Krypton’s recorded history, and exiled into until it brought them their own twisted perspective of comfort, which drove them into creating the Worldkillers to balance out their suffering with those who never had to endure it, horrifying Kara at knowing that there are other Worldkillers besides Reign.

It was then that Reign herself would announce her presence, having deemed the priestess as a major liability to her primary goal, with her spouting off such sensitive information of the sort that Supergirl came precisely to acquire. Recognizing Reign at once, but failing to foresee what the Worldkiller now intends to do to her, Jindah became elated thinking that the former came to liberate her from Fort Rozz and turned her attention back to Kara to gloat how the House of El glyph-bearer’s doom shall be the Juru priestess’s salvation. However, it soon became apparent to both of them that Reign had different plans; she fired her red-colored heat vision behind Jindah, going through her chest and killing the priestess instantly. Shocked, Kara asks how could the Worldkiller retain her powers in a place irradiated by a blue sun. Aware that the same cannot be said of Supergirl's own powers in the presence of the star AZ336XB12, and therefore giving the Worldkiller a monumental advantage in the absence of a yellow sun, the disguised Sam merely replied that, unlike the superheroine, she does not receive empowerment from particular and very specific solar-based sources.

Advancing on the powerless Supergirl, Reign taunts the latter remarking that she does not sense from her the same kind of self-assured bravado that she recalls when they were back on planet Earth — and for good reason, given the present circumstances — and likens Kara to a weak and defenseless, fearful child. However, just like how she did at the nearing end of her first fight with Reign, Kara states that Reign does not intimidate her in the slightest and tries to appeal to the Worldkiller’s sense of morality. Reign scoffs at this, coming up close to her fellow Kryptonian and mocks her for thinking that the two of them could ever come into a compromise. Her eyes then glew red as she readied to kill Supergirl with searing vision at that close range, only for Livewire to interfere with a stream of electricity that forced the two Kryptonians apart from each other.

Recognizing the supposedly villainous meta-human, Reign asks if Leslie came to Supergirl’s rescue and Livewire claims she came to take the murderous Kryptonian down. The two of them fought while Kara took cover, with Reign having a hard time subduing Livewire due to her ability to travel instantly from place to place in the form of static electricity that caused the genetically-modified Kryptonian to miss repeatedly with her heat vision; but likewise, Reign proves herself more resilient to Leslie’s powers than an empowered Supergirl ever was — either absorbing or dodging the former shock-jock’s sparking assaults. Deeming the meta-human as a nuisance, she engaged with Leslie in a “Beam-O-War” battle with Livewire’s electric discharge pitted against Reign’s burning gaze. The two sources closed in on each other, allowing Reign to single-handedly grab and choke Livewire after the meta-human neared within the former’s reach. Seeing Leslie in trouble and without a thought of concern for herself, Kara descended on the Worldkiller to try getting her to release Leslie; but the masked Sam simply threw her off and this infuriated Leslie enough to grab her detainer’s wrist and channel a rising surge that Reign initially barely felt, through her limb, but intensified to the degree that it ultimately threw both of them off each other. Unfortunately, that expended the last of Livewire’s energy reserves, leaving her depowered and vulnerable. Reign appears to have noticed that and began charging her eyes again for the killing strike.

But Supergirl came up behind her and pleading for Reign to cease, drawing the latter’s attention away from Leslie. Kara then attempted to reason with the Worldkiller once again, telling her to judge the powerless Kryptonian instead of Livewire for she was only there with her because Supergirl asked her to join her on the search for Jindah; thus, Leslie does not deserve to die by Reign’s hand because she was living straight and (somewhat) peacefully, keeping herself and her capabilities from anything criminal, ever since Reign made her presence and intents publicly known. However, this only merited that Reign shall still kill both of them, just not at once, and that she will be starting with Supergirl. She charges her heat vision, and Kara bravely stood her ground, prepared for the coup de grâce but Leslie jumped in the way, receiving the super-heated blast instead of Kara, shocking both her and Reign, who orders the former to keep away from the felled Livewire with glowing crimson eyes still fully charged for her next kill: Supergirl.

And just then, yet another belligerent entered into the scene and Sam, as Reign, turned her attention to the newly-arrived Psi who addresses the Worldkiller as “Blackbird” while tilting her head slightly to the side and Reign took a moment to regard this new arrival hinting that — unlike with Leslie — she has little, if any, knowledge on the fear-inducing meta-human (which implies that Psi’s very specific imprisonment was kept top-secret and highly classified). Seeing that Reign was studying her, Gayle took advantage of the Worldkiller’s momentary bafflement and wonders what goes on in the other woman’s psyche before firing a particularly potent psionic blast into it. Immediately, Reign jolts and began to heave, nearly doubling over and grabs her masked face in pain as Gayle’s influence comes into a clashing conflict with Sam’s dictating Juru programming, bringing Sam to her knees in the physical world as Psi and Kara looked on. And whilst screaming, in her mind, the Worldkiller glimpses visions of herself losing grip of a crying and distressed Ruby, whom she loses into eternal darkness. This causes Sam to emerge back into control, albeit breathing heavily, panicky and sobbing due to the forced manifestation of what she finds most terrifying from within her own mind, courtesy of Marsh. Opening her eyes, she fearfully looks around in fidgety confusion, unsure as to how she got to where she was (or what the heck she’s wearing). Her gaze fell on Kara, whom she recognizes in her alter-ego persona and Kara, in turn and despite Leslie’s demise caused by Reign, expresses concern for the other now-visibly frightened Kryptonian before her, who was now behaving farthest from the person trying to kill her from minutes back — let alone as the masked vigilante, who brutalized Kara senseless, from only a few days ago during the Yule season.

Sam's Reign persona began to take hold again; shifting from where she was kneeling and realizing that she risks losing control of herself completely, to her human side, should the fight drag on in Psi’s presence, the Worldkiller immediately took off and retreated back to her pod, disembarking from Fort Rozz. Later, Sam, as herself, would return to Alex’s place to collect Ruby. As her daughter leaves Alex’s living room, Alex inquires Sam of her work trip — perplexing Sam who did not leave for such but recalls having said to Alex that she will from earlier; checking her phone, Sam sees messages left by Lena on the trip that the former apparently failed to show up for. Distress, she recounts all the times when she was blacking out again and again, with no memory of where she went or what she did, until she comes to — much to Alex's worry.

At her Fortress, Sam, fully garbed as Reign and with the latter having taken over, walks over to the interior of the structure with her crystal at hand, inserting it into the alien structure’s control console. Immediately, the A.I. hologram appears informing her charge that someone got to one of Reign’s kind before she has. The world killer inquires as to how the hologram knows and the latter answers that this other world killer also possesses a crystal similar to Reign’s, which was activated no doubt by those who homed in on the second world killer to emerge. The hologram advises her agent to be delicate in recruiting her "sister", as the last thing they want was to do so callously and therefore be seen as enemies by this newly-awakened world killer - which was the precise opposite of what they were trying to achieve; but at the same time, Reign must make haste, lest her sister be taken away. Reign obediently agrees.

Reign would later track the other worldkiller, Purity, at the subway where the latter was engaged in battle against Alex, J’onn, Supergirl and Mon-El - the D.E.O.'s field assets. And even then Julia, as Purity, maintained the clear upper hand and only reverting back to the former’s persona after Alex talked Purity out of killing Kara. Unfortunately for them, by then was Reign’s arrival, bursting through the ceiling; she mocks Supergirl, whose legs were crippled by Purity from earlier, for having been brought down on her knees by yet another world killer, but also remarks that it was good practice for what is to come. Alex then began firing her alien handgun wildly at Reign, who was mostly unaffected by the human’s repeated gunfire assault and went to close in to disarm Alex, felling the agent.

She then places her foot on Alex with the intent to smother her, only prevented from doing so (as Supergirl was helpless to stop Reign)when Julia spoke up telling Reign that she’ll come quietly, ignoring the disabled Supergirl begging Julia not to, provided that the agent be spared. Acknowledging her sister’s plea, the disguised Sam releases Alex and goes over to Julia cooing to the latter her world killer identity, promising that together they will find their third, Pestilence, and with the trinity’s completion there will only be undisputable power to follow. That said, she grabs Julie and flies off.

Splitting apart
After being exposed to an ancient Kryptonian rock, mixed with her blood sample by Lena Luthor, Reign separated from Sam and became her own person while still connected to Sam's life force.

Death
She was killed by Sam, who put the water from the Fountain of Lillith into to her mouth, causing wraiths to surround Reign and fly her into the Fountain of Lillith.

Personality
"You're no god just as I'm no devil. All I am is truth. And judgment. And death. And I will reign."

- Reign to Supergirl

Due to her forced mental programming operating on her as Reign, Sam becomes an exaggerated polar opposite of everything she is, while her world killer persona remains inactive in her default state, for the periods and durations wherein Reign remains in control: a brutal vigilante who indiscriminately kills anyone she sees as an evildoer in order to further her goal of ruling the world, and will react expediently cold and silently murderous whenever she comes across the said people or catch knowledge of such. She is cruel, sadistic and ruthless towards anyone who stands in her way. She is also egotistical; even though she doesn't actually see herself as a "god" or a "devil", she sees herself as "truth", "judgment", "death" and an executor of justice. Thus, her eventual dominion is inevitable and this causes her to also view those who say or stand otherwise as obstructing targets to her goal.

She believes all of her actions are intended to spread justice to all those who deserve it and is not above mocking or taunting those who oppose her whenever Reign has them at her mercy, making it possible to catch her off-guard when she least expects it. She also perceives that humanity has ruined their world and they must all be judged by her without exception. Despite her ruthlessness, she is not above offering prey whom she sees as her equal a chance to stand down, like how she offered Supergirl to do so (threatening to subject the latter "into purgatory" if she chooses to stand in Reign’s way) and was perhaps a hint disappointed when the latter refuses and even responded defiantly, making the disguised (and mentally-overridden) Samantha realize that she had to manhandle her fellow Kryptonian for her insolence.

But despite all of her negative drives and overzealous conviction, it would seem that Sam — as Reign — still retains vestiges of her civilian persona in that she has been known to simply leave be or tolerate those whom she is familiar with as Sam, even if they directly oppose her; this was made apparent when she smiled in amusement after Lena, her civilian boss and friend, refused to comply when Reign came to deliver her message to the world via CatCo's broadcast, rather than viewed the human as a standing obstacle to the cleansing that she was trying to effect (and the world killer would have killed her, just for that, on the most recent instructions received from the Fortress of Sanctuary) upon Earth, but went on with her purpose anyway and left Lena unharmed. Additionally, she rapidly took over and went immediately after Morgan Edge upon Sam learning that Edge staged an assault against Lena from days prior, hinting a protective (if not fiercely territorial) side of herself even as Reign.

Though this leniency of sorts oddly did not prevent her from attempting to go after Alex (whom Sam is also reasonably acquainted with) when the latter, J'onn and several of the D.E.O. operatives staged a futile ambush against the world killer - and had to be physically stopped by the Martian himself. Reign would later come close to killing Alex, knocking the latter down then stepping over to place a foot upon Alex's chest (though to be fair, at both confrontations, Alex clearly presented herself as Reign's enemy when she forced green kryptonite around the world killer's neck to bring the masked Sam down during first and then repeatedly fired several ineffective shots, in the second, with her gun at the latter) after telling the agent that she'll take her life then and there - only stopping at the beseech of Julia, who offers to be taken and become Purity completely on the condition that Alex was allowed to live.

The fact that Reign agreed to Julia's terms shows an honorable aspect on the part of the former not obligated to carry out every will of the Fortress of Sanctuary and would also not do anything as drastic as taking another's life without sufficient motive, since retrieving her fellow world killer, Purity, was her primary obligation at that time.

As Reign, Sam speaks in a disguised tone that ends her sentences in a reverberating manner.

Powers
"There is no prison you can build that can contain me. There is no one on this planet of equal power that can kill me."

- Reign to Supergirl


 * Dark magic-empowered Kryptonian physiology: Reign's physiology was altered due to genetic experiments and dark magic from Kryptonian Polytheistic Witches. Normally Reign's capacities are no greater than a normal human of her physical conditioning, However, once charged by the energy of a yellow sun and metabolized into her body, she becomes able to perform a variety of otherworldly feats. Due to her dark magic enhancements, her powers are naturally greater than any normal solar-powered Kryptonian. It is said that she was born from Rao's fire. According to a Kryptonian hologram, Reign has powers that are more advanced and potent than Supergirl, proven by her decisive victory over the National City protector. It is unknown if she is more powerful than Superman, but it is likely that she is just as powerful as him, as she has been on Earth for at least 35 years; the same number of years that Superman has spent under the Earth's yellow sun, but had augmented, much more potent powers, making Reign one of the most powerful beings in the multiverse.
 * Solar energy absorption: Reign's powers are not dependent on the energy spectrum from the yellow sun, but she can fill her reserves with solar energy, augmenting her abilities, especially her heat vision. It is also possible that she can discharge all of the solar energy in her reserves.
 * Enhanced memory: As a Kryptonian, Reign's memory is greatly enhanced, allowing her to remember specific details of her birth and her creators.
 * Super senses: All of Reign's senses are heightened to greater than that of a normal human.
 * Super stamina: Reign can run or fight for long extended periods of time, and this aspect of her powers stem further than that of Supergirl.
 * Accelerated healing factor: Reign’s metabolism is tremendously enhanced by solar energy, allowing accelerated healing abilities and burning calories at a fast rate, making her practically immune to becoming overweight.
 * Contaminant immunity: Reign has an immunity to all forms of disease and contaminants. After absorbing Grace's abilities, she became immune to all forms of Pestilence as well.
 * Flight: Reign is able to manipulate her own gravitational field to generate thrust and propel herself through the air, often at supersonic speeds, much faster than she can travel by foot.
 * Sleep flight: Reign has the ability to float in the air, thanks to her ability of flying, while she sleeps, or as a voluntary act.
 * Levitation: Reign is able to suspend herself in the air by floating.
 * Super jumping/Leaping: Reign is able to jump several feet off the ground and leap vast distances through the air, simulating short term flight. This ability is a combination of super strength and flight. Reign is also able to jump very high and generate enough force to smash through windows.
 * Heat vision: By concentrating every solar energy reserve she has in her body, Reign can emit focused energy beams of variable intensity and temperature from her eyes. Unlike other known Kryptonians, Reign’s are bright and searing red; it also appears to be more potent, as with it she was able to kill Livewire, who sacrificed herself to prevent Kara from getting hit instead. Her heat vision can also be used a lasers, rather than burning attacks.
 * Invulnerability: Reign is essentially invulnerable to all Earthly weapons, with bullets simply ricocheting off her flesh. Her invulnerability is so intense that even when just beginning to manifest her powers, while in her good for Sam remained oblivious to being shot at Lena's press conference attack, only noticing the lack of injury a while later. While fighting Supergirl, as a fully transformed Reign, though she was repeatedly staggered from all of the former's powerful attacks, she’s rather quick to recover and retaliate - emerging with no signs of even being hurt or tired at the end. Sam would later fare the same against J'onn who, despite the Martian's attempt to entrap Sam by miles beneath the Earth by phasing her through the planet's surface, was forced back above ground by the Worldkiller's thrashing movement as J'onn extended his intangibility over to her; and even then, Sam still had enough strength in her to go up against a newly-revived Kara and was only forced to retreat after she got close enough for Supergirl to inject refined Green Kryptonite directly into Sam's deep neck muscle. It was later made evident that her otherworldly resistance to physical harm, like every other enhanced attribute at Sam's disposal, is not dependent on a yellow sun, since she was able withstand a brunt of Livewire's electric-based attacks and even serenely ignored a steadily rising voltage surging across her outstretched arm that the meta-human was directly trying to electrocute her with while Sam was holding Leslie fast by the neck, only finally breaking free from the Worldkillers's grip once the energy that Livewire was amassing reach critical threshold and propelling both of them away to opposite directions. However, Sam's invulnerability as herself seems to be greatly mitigated until her Reign persona takes over, expressing itself only when inflicted with something that would otherwise be borderline detrimental or life-threatening (i.e. gunshot) which explains as to how Alex was able to draw blood from Sam via a syringe.
 * Self-sustenance: Due to the effects of a yellow sun, Reign's physical needs are greatly reduced or completely removed. It is unknown if a yellow sun's absence voids this aspect of her powers.
 * Atmospheric adaption: While Reign does require oxygen, her physicality allows her to survive while inhaling more harsh forms of it.
 * Longevity: As a Kryptonian, Reign's lifespan is considerably longer than a normal human and likewise ages much slower, and after absorbing Pestilence's powers, she should be able to live for a near-infinite amount of time, almost never aging.
 * Electrosynthesis: Reign's body creates her own power source, thus her powers are not reliant on the yellow sun.
 * Kryptonite immunity: Reign has a very high level of resistance to Kryptonite. This was proven when Lena’s supercharged Kryptonite was only able to weaken her. Though she is somewhat immune to Kryptonite, supercharged, or very potent forms can weaken her, or possibly even kill her, if she had enough exposure to it. She was even able to attack the Kryptonite from inside her body after she had stabbed in the jugular vein by Supergirl. Though she has a high tolerance to Kryptonite, it can still penetrate her skin.
 * Temperature and elemental resistance: Reign can resist any temperatures, including heat and cold, as well as elements such as rocks and high levels of electricity, as shown when she was crushed by rubble, burned by Supergirl, and frozen by Lex’s mansion defenses. She is also impervious to any other elemental attacks.
 * Super smell: Although she rarely uses this power, as an enhanced Kryptonian, Reign has the ability to pick up smells that are very far away or very subtle. She can also identify where the smell is coming from.
 * Super vision: As a Kryptonian, Reign is able to see very far distances, presumably at peak human, or low superhuman levels. She is even able to see clearly in the dark.
 * Electromagnetic spectrum vision: As a Kryptonian, Reign can see well into most of the electromagnetic spectrum. She can see and identify radio and television signals as well as all other broadcast or transmitted frequencies. Using this ability, she can avoid detection by radar or satellite monitoring methods.
 * Microscopic vision: Reign has achieved the ability to see extremely small objects down to the atomic level, and magnify objects for her eyes to see.
 * Telescopic vision: Reign possesses the ability to see something at a great distance, without violating the laws of physics. Though limited, the exact extent of the ability is undetermined. In function, it is similar to the zoom lens on a camera.
 * X-ray vision: Reign has the ability to see through objects; except for lead.
 * Infrared thermal vision: Reign has the ability to see heat and cold signatures of people and other objects. Reign can also see with better acuity in darkness, and to a degree in total darkness.
 * Super breath: Reign is able to exhale powerful gusts of air from her mouth which are similar to force winds. She can also cause the temperature of her breath to drop, therefore able to freeze nearly anything. And after Imra telekinetically shielded her husband from Reign’s freezing breath, that inadvertently formed an ice dome around the Daxamite, it was seen that the ice she creates in this manner bear enough constitution to resist Mon-El's yellow sun-enhanced repeated strikes when he hopelessly attempted to break out of the solidice-sphere encasing him and keeping him hopelessly in place.
 * Vocal alteration: As Reign, Sam usually speaks in a condescending reverberating manner, but by using her vocal alteration ability, she can turn her voice back to normal and vice versa. When using this power, the area around her throat glows a bright orange-red color. She first demonstrated this power by using it to trick "Patricia" and "Ruby" into thinking it was her human persona.
 * Super hearing: Reign has super-sensitive ears that can perfectly pick up sounds from miles away and even through structures. Sam can also make her super hearing selective, and after absorbing Julia’s abilities, she immune to loud sounds, and can switch her super hearing on and off.
 * Super speed: Reign possesses the ability to move at super-sonic speeds, both through flight and on foot. Her speed seems greater than Supergirl's, who despite being fast enough to intercept bullets, failed to evade the vast majority of Sam’s assaults, and even repeatedly outmaneuver the latter for the most part of their first battle.
 * Super reflexes: As Reign, Sam's reflexes are so fast, she can respond to attacks within seconds, much faster than Supergirl can, as she has overpowered the latter in hand-to-hand combat repeatedly.
 * Accelerated perception: When moving at super speeds, Reign is still able to take in everything going on around her, except much slower.
 * Super strength: On the day of the revelation of the Girl of Steel statue, after a mysterious attack by Bloodsport, in a moment of desperation to save her daughter, Ruby's life, Sam raised an iron bar with little effort. After her awakening, Sam's full strength was proven to be considerably greater than Supergirl's, capable of feats like nearly overturning something as large as an oil tanker and punching away 31st Century artillery ordnance with apparent ease. While able to block some of Sam's blows, the repeated accumulation of hits that landed soon left Supergirl bleeding heavily and bruised all over, barely able to stand before finally falling into a coma and critical condition. It is unknown if Sam is stronger than Superman.
 * Shockwave creation: By clapping her hands on stomping her feet with her super strength, Reign can create massive shockwaves, powerful enough to injure Supergirl. She can also use this to create a thunderclap effect, which generates so much force, it creates a large sound.
 * Worldkiller link: The Worldkillers appear to have a link with each other using Reign as a nexus point. This is evident as no Worldkillers awoke until Reign did. Julia/Purity does not have children so this did not inhibit the development of her powers like Reign and only woke after Reign did. Along with the other world killers, Sam is able to create a full eclipse on Earth’s sun and generate a blue shockwave that was able to incapacitate Supergirl. Once Grace and Julia died their powers transferred to Sam, though Sam was able to apply both the Worldkillers' powers further than they did respectively.
 * Sonic scream: After absorbing Julia Freeman's powers, Sam can vocally emit a focused, high frequency sonic scream that is powerful enough to knock a fully grown Kryptonian feet away into a wall. She has advanced with this power so that her scream is powerful enough to make Martian Manhunter bleed profusely out of ears, so much so he needed to be hospitalized.
 * Sonic inducement/Sound projection: With a slight clench of her hands, Sam, is able to induce vertigo, vibration, and a sonic sound in her immediate vicinity, extending outwards omni-directionally. She has also used this power to create powerful sound shockwaves in conjuction with her scream.
 * Empathy: After absorbing Julia Freeman's powers, Sam is able to "see" into people, and is able to read peoples personalities, and look deep into their psyches.
 * Pestilence inducement: After absorbing Grace Parker's power, Sam can spread some kind of contagious virus that can kill any living thing she comes into contact with as seen when dozens of pigeons fell dead from the sky, when people at city hall started having nose bleeds before collapsing and when a plant immediately died upon being touched. According to Mon-El, it is 100% fatal. She has taken this power so far as she does not need complete physical contact with the organism, but just needs to be in the vicinity of it. She was even able to affect plants that were yards away from her.
 * Retractable claws: After absorbing Grace's power, Sam can grow her nails into yellow claws, sharp and dense enough to pierce Supergirl's invulnerable skin, and presumably any other being. Her claws can also induce pestilence when she grows her nails upon physical contact. Her nails are retractable, and can reform to normal size.
 * Evolution: After absorbing Grace's powers, Sam can "evolve" into more powerful and potent forms of herself, including turning into diseases and creating new ones. She has used this ability to passively evolve her body in order to become more resistant to larger doses of Kryptonite.
 * Telepathy immunity: Reign can resist psychic attack with ease, but this power falls short against more powerful telepaths such as Psi.
 * Psychic interdimensional travel: According to Lena Luthor, Reign is capable of travel psychically between dimensions, while Sam is awake, Reign is in the dark valley and vice versa.

Abilities

 * Multilingual: Reign is capable of fluently speaking English and Kryptonese.
 * Expert combatant: Though not particularly acrobatic beyond her capacity of self-propelled flight, as Reign, Samantha is a very capable unarmed combatant. Able to effectively combine her raw might into her battle tactics, she is shown able to land efficient and devastating blows that very few could defend against. Ultimately, she was able to defeat and severely injure Supergirl, putting her on a coma, who received considerable combat training, able to block and counter many of her fellow Kryptonian's blows while gradually wearing down Supergirl with her vicious strikes, even whilst soaring together with her in midair, until Supergirl was too winded and battered to fight back. Sam can even fight evenly against Supergirl and Mon-El at once using their capes.

Former equipment

 * Reign suit: Reign wears a protective suit, to hide her identity from her victims.
 * Sword of Juru: Reign used the sword of Juru in an attempt to complete Earth's terraforming, however later Sam stole the sword from her.

Trivia

 * Reign was initially the main antagonist in Season 3, but was eventually outranked by the true main antagonist.
 * Reign's heat vision is red as this power is often depicted in the Superman comics and other media. Kryptonian's heat vision are blue on Supergirl.
 * In the comics, Reign was a Kryptonian biological weapon created by Zor-El.