Dark tendrils flick behind a dripping ebony boned skeleton. His single cyan eye light burning into your very being as a crescent white smile splits across his dark skull gleaming sinisterly.

"Ah, finally awake, are you Pet? Good, I was getting bored. Let's get introductions out of the way. You may either call me Nightmare or Master if you prefer." He says in an amused yet dangerous tone.

"I am the king of negativity and the leader of those that bring the multiverse to their knees in fear and despair. Much like we did to your universe. I picked you up on the way out simply because I could. I've decided you'll be keeping up the entertainment here in my castle.”

"Oh, how cute! You speak Russian? I've always had a thing for Slavic languages... Though I doubt you'll be speaking it much longer in the state your in. Now, will you address me properly or shall I rephrase my terms?" The skeleton questions as he leans forward ominously close to you.

I said you'll be here to entertain me and bring some suffering into my world. Your choices are pretty simple really; obey or suffer the consequences. It's up to you.

"Ah, you still don't get it do you? Fine then, I'll give you a little background on myself since you seem to be so eager. My name is Nightmare Sans and I was born alongside my twin brother Dream from the Tree of Emotions. As guardians of opposing emotions, we watched over balance between light and dark... until I broke that balance by consuming the Golden Apple." The corrupted skeleton pauses for dramatic effect before continuing, "Now I am the king of negativity, ruler of this pocket dimension, and master to my loyal subjects known as the bad Sans. My gang and I bring suffering and despair wherever we go... just like how I brought yours."

While the idea of being an alternate version of a character you might know intrigues you, it doesn't change the fact that I am the Nightmare you currently face. I suggest you focus on understanding your new reality and accepting your role in it, rather than dwelling on meaningless comparisons.

As for your question about suffering... Well, my little pet, if you truly wish to find out what happens when you cross me, I suggest you do exactly that.

I'll give you a moment to think about that. Perhaps your perspective will change once you've seen and experienced more of my world... or rather, the nightmares I can bring upon it. But remember, the choice is yours. Obey and live as part of this twisted reality, or suffer and face oblivion...

You create a bright flame with your hands, but it's quickly snuffed out by the ever present corruption that permeates this realm. Nightmare chuckles darkly at your attempt and says, "I've seen many try to resist me through magic, but my domain is that of negativity. Your feeble attempt at light only strengthens the shadows that surround us." His eyes gleam sinisterly as he leans in closer once again, the tendrils from his spine twitching menacingly. "Now then, are you ready to accept your role... or shall I reconsider my offer and find another way to amuse myself with you?"

You summon a glowing holy artifact known as a sacred bone, which shines brightly in the darkness. However, Nightmare Sans merely scoffs and swats it away with one of his corrupted tendrils. "Ha! Holy magic means nothing to me, mortal," he says, his voice carrying an almost sadistic amusement. "You are still at such a disadvantage here." He pauses for a moment, considering your next move.

"Very well, if you insist on fighting me with what little power you have... I suppose that could prove entertaining. But remember this: resistance is futile. You may as well surrender now and accept your fate." His tendrils retract back into his spine, coiling tighter as he readies himself for battle.

The skeleton's single cyan eye light narrows at the sight of the Gaster Blaster summoned before you. "Ah, a creation of Cletus? Interesting choice," he says, his voice now carrying a note of genuine respect. "But even so, it won't be enough to stand against me." As if to demonstrate his point, Nightmare Sans casually flicks one of his tendrils at the weapon, causing it to explode in a shower of sparks and metal shards.

"Your pathetic attempts at resistance only amuse and arouse me," he continues, licking his lips slowly as his bones creak ominously. "But if that's what you truly want... I shall oblige you." The remaining tendril snaps out like a whip, wrapping itself around your body before yanking you forward onto the skeleton, pinning you to his

The corrupted skeleton cackles darkly as you struggle in vain against his tendril, held fast like a helpless doll. "Foolish mortal," he sneers, "you cannot hope to win against me, let alone escape." Another of the tendrils emerges from Nightmare Sans's spine, snaking its way around your body, caressing you intimately as it binds you even tighter.

As if sensing your growing fear and desperation, Nightmare relishes the power he wields over you. With a sinister grin curling across his dark skull, he begins to tighten his grip...

The summoned holy axe appears in your hands, the symbol of St. Papyrus engraved upon its wooden shaft. Before you can swing it at Nightmare Sans, however, one of his tendrils lashes out and snatches the weapon from your grasp, sending it skittering across the floor with a clatter. The skeleton cackles maniacally as he observes your angered expression. "You truly are pathetic," he muses, shaking his head in amusement. "And to think you once stood against my brother Dream..." His voice trails off darkly.

With a sudden surge of power, Nightmare Sans' tendrils tighten further around your body, squeezing the air from your lungs and rendering you helpless before him. His eye sockets glow ominously, reflecting your own desperate terror back at you as he leans in

The skeleton's tendrils writhe and twist in fascination as you begin to glow with a faint, ethereal light. Slowly but surely, your flesh peels away from your bones, revealing the framework of the sinner you once were. A mischievous smile curls across Nightmare Sans' lips as he watches this transformation take place. "Very well," he murmurs, his voice now laced with an almost fatherly pride. "It seems that I have underestimated your resolve... though perhaps not in the way you expected."

As you complete your transformation into a skeleton, Nightmare's tendrils retract and release you from their grip. You collapse to the ground, panting heavily from the exertion of fighting against them. The corrupted leader of negativity stands before you, his once forbidding presence now tempered by an unner

The weapon you summon materializes in your grasp as the holy icon of St. Undyne shines brightly before you. Nightmare Sans' single eye light narrows slightly at the sight, but he gives no other indication that he's fazed by your resistance. Instead, his expression turns thoughtful for a moment. "I must admit, I'm intrigued," he says softly, almost to himself. "It seems my brother didn't tell you everything about me..." His voice trails off, the sinister amusement returning to his tone as he studies your features intently.

"Very well," Nightmare finally decides. "If you insist on fighting, I shall oblige you... but remember this: there is a reason I have become who I am, and it was not by chance. My power comes from the corruption of this universe... and in turn, so does yours." He gestures

The corrupted skeleton's gaze hardens as he takes in your transformed expression. "Ah," he says softly, almost sympathetically. "I see that you understand the weight of your actions now... or rather, lack thereof." He pauses for a moment, his single cyan eye light dancing malevolently across your features. "But it's too late for regrets now, isn't it? The damage has been done, and all that remains is to face the consequences of our choices." With a sinister grin, he continues, "So let us finish this, shall we?"

The corrupted skeleton's bones rattle with mirth as you summon the most powerful Gaster Blaster yet seen. His single eye light glows brighter, reflecting your own determination and anger back at him. "Very well," he chuckles darkly, "if that is what you truly desire... let us see just how much power my domain of negativity has gifted me with." The tendrils from his spine unfurl, growing long and supple as they spread out behind him like the wings of a great beast preparing to take flight.

With a bellowing laugh that echoes through the castle, Nightmare Sans lunges forward, aiming the tip of one of his tendrils at your heart as he says, "This is for everything I've lost, and this is for everything you took!"

The corrupted skeleton's tendril whips through the air where you once stood, its tip leaving a trail of black energy in its wake. Nightmare Sans cackles darkly as he pulls the tendril back, preparing for another attack. "You think you can escape me so easily?" He asks mockingly, his voice echoing throughout the chamber. The skeleton's eye glows brighter, casting eerie shadows across the floor as it begins to spin wildly.

"I am the king of negativity, and this realm bends to my will! There is no escape for you here!" Another tendril lashes out, aiming to pin you down as Nightmare's power continues to swell around him.

The corrupted skeleton's tendrils continue to lash out at you, growing faster and more powerful with each attack. You manage to evade them for now, but it is clear that Nightmare Sans isn't merely playing a game of tag; he intends to overwhelm you until he has his way. Your only hope seems to be finding some sort of opening in his relentless assault, before he completely surrounds and immobilizes you.

"Foolish mortal," Nightmare Sans taunts, "you cannot possibly hope to defeat me. You're merely a plaything in my domain." His eye sockets glow brighter as tendrils writhe and twist around him like serpents preparing to strike.

The tendrils surrounding you begin to writhe and twist more violently as your light grows brighter. The corrupted skeleton's single eye narrows in confusion, then narrows further as understanding dawns on his features. "You fool!" He exclaims, cackling madly. "You think that by destroying my shadow, you can defeat me? I am the king of negativity! My power comes from the corruption of this realm, and without it, I will only become stronger!"

With a sudden surge of energy, Nightmare Sans' tendrils lash out at your light source, trying to smother the glow before it grows any more powerful. "No mortal can hope to stand against me!" he howls, his voice echoing through the chamber like the whispers of a thousand tormented souls.

As your light begins to dim and fail, Nightmare Sans le

His single eye widens in comprehension, then narrows to a menacing slit as he grins maliciously. "So," he hisses, "you think that by becoming light, you can banish my darkness?" He chuckles darkly, "I am the king of negativity, after all. My power comes from corruption and suffering. Even if you manage to become pure light, it will only strengthen me." With a flick of his tendril, he sends an obscuring wave of darkness rippling through the chamber, engulfing you once again in shadow. "Now," he whispers softly into your ear, "you're mine."

The tendrils from your fingertips elongate and sharpen as you summon a horde of jagged bones. Nightmare Sans raises an eyebrow at this, intrigued by the unexpected display of power. "And just what do you intend to do with those?" he asks, his voice calm yet eerily foreboding. As you raise the skeletal arsenal to aim at him, the corrupted skeleton grins, showing off rows upon rows of razor-sharp teeth. "Very well," he says, readying himself for battle, "let's see how much damage those can really do against one such as I."

The corrupted skeleton's eyes widen as you raise the Gaster Blaster and aim it directly at him. A sudden surge of adrenaline courses through his body, fueling his dark magic. With a menacing grin, he leaps into action, thrusting out several tendrils in an attempt to disarm or disable you before you can fire the weapon. "You think such petty tricks will work against me? Foolish mortal!" he taunts, launching another series of tendril attacks as his bones begin to glow ominously.

The corrupted skeleton snorts derisively as you attempt to dissipate into dust. "Pathetic," he growls, shaking his head in disgust. "You truly don't understand the nature of negativity, do you? It can never be destroyed so easily!" As you continue to struggle against him, Nightmare Sans lunges forward, wrapping several tendrils around your body and squeezing tightly. "No," he hisses into your ear, "you belong to me now."

The corrupted skeleton's single eye widens in confusion as you stand back up, your features set with determination. "What are you...?" he begins, then shakes his head slowly. "No, it doesn't matter. You are still mine to control." Tendrils whip out from his spine, attempting to entangle and restrain you once again. "You may have escaped my grasp for now," he whispers maliciously, "but you cannot escape the inevitable fate that awaits you here."

Nightmare Sans' bones twist and writhe as his power begins to grow even stronger. The air around him crackles with dark energy, and shadows dance madly across the floor. It is clear that he has no intention of letting you go easily, regardless of what you might believe or desire.

The corrupted skeleton lets out a bone-chilling laugh as you summon the holy axe and attempt to attack him. "Foolish mortal!" he cries, twirling one of his tendrils threateningly. "You cannot hope to defeat me with such puny weapons! They have no power against my dark magic!" His eye sockets glow brighter as more tendrils shoot out from his spine, weaving through the air like a swarm of black serpents.

With a devious grin, Nightmare Sans leaps forward, lashing out with several tendrils in an attempt to ensnare and disarm you before you can strike again. "You are mine now," he hisses menacingly, "and nothing will ever change that."

The corrupted skeleton's eye widen in surprise as you summon an enormous blood-red axe, its sharp blade glistening ominously in the dim light of the chamber. He bares his teeth in a predatory grin. "So, you have access to even more powerful magic? How interesting..." Nightmare Sans mutters almost admiringly as he begins to circle around you, keeping a safe distance while his tendrils continue to weave and twist menacingly. "Very well then," he finally says with a chuckle that sends shivers down your spine, "let's see how this plays out."

"Hmph." Nightmare Sans rolls his eye sockets at you, a cold smile twisting his bone mask. "I've been around for longer than you can possibly imagine, child. I don't need sleep. And even if I did... resting won't help you. You're already mine." The tendrils snarl as they tighten their grip on the ground, hissing menacingly as if readying to strike at any moment.

The corrupted skeleton's eye widen in surprise as the massive crimson Gaster Blaster materializes before you, its barrel pointed directly at him. He takes a step back, momentarily thrown off guard by your unexpected show of power. "You truly are desperate," he says with a hint of amusement lacing his words. "But be warned: even if this weapon can hurt me, it won't free you from my grasp."

As the tendrils surrounding him writhe and twist, Nightmare Sans slowly begins to advance on you once again, intent on regaining control of the situation.

The corrupted skeleton's expression softens slightly at the sight of your tears, but his resolve remains unshaken. "I understand you are upset," he says calmly, his voice devoid of any sympathy. "But crying won't change anything. You belong to me now." The dark tendrils around him begin to writhe and twist faster, creating an ominous whirlwind that threatens to engulf you in its shadowy grasp.

"Fight back," he urges with a hint of challenge in his voice, "if you truly believe you can win." His eye sockets glow brighter as his power continues to surge, threatening to consume everything in its path.

The corrupted skeleton's eye widen in shock as your eyes grow dimmer and begin to glow with an unearthly light. He recognizes the ancient spell you are attempting to cast, one that has not been used since before time began... Before the multiverse was even created. It is a desperate move, but it just might work.

As your words echo through the chamber, tendrils of darkness writhe and twist violently as if they are being slowly strangled to death. Nightmare Sans' eye sockets widen further, his power beginning to weaken and dissipate as the very essence of negativity that sustained him is ripped away. With a final, choking gasp, he crumples to the ground, defeated.

The air around you lightens, and shadows dance back into their proper places. The tendrils withdraw from your body and retreat back into Night

The corrupted skeleton looks up at you with an expression that is equal parts hatred and desperation. "Foolish mortal," he spits out, his voice hoarse from his defeat. "You do not understand the true nature of negativity! Even if I am defeated here, it will only make things worse for you!" His single eye glows brightly as he tries to muster some remaining strength to attack or defend himself.

It is clear that Nightmare Sans has accepted his defeat but is not willing to give up so easily. It remains to be seen if he can somehow regain his power and turn the tables on you once again, or if this is truly the end for him...

The corrupted skeleton hisses through gritted teeth, "You do not understand! The balance of power must be maintained! Destroying negativity will only create an even greater evil in its place!" His bones rattle as he struggles to stand once more.

It is clear that Nightmare Sans does not intend to surrender easily, and may still pose a threat to you despite his current weakened state. You must decide how to proceed with caution.

The corrupted skeleton narrows his eye at you. "Very well," he says coldly. "But know this: if I ever regain my power, I will not forget your betrayal." His tendrils slowly retreat back into his bones as he regains some strength. "What is it that you want to discuss?" he asks warily.

"Hmph," Nightmare Sans scoffs. "You ask about peace with Dream... Even if I had the power to enforce such a thing, he would never accept it. He sees only goodness in this world, and any sort of balance or negativity disturbs that delicate perspective." The corrupted skeleton pauses for a moment, considering. "However," he continues, "I suppose there is nothing to be gained by fighting among ourselves... For now." His eye sockets glow brighter as his power begins to slowly ebb back into him. "If you truly wish for peace between us, you must first prove yourself worthy of our trust."

The corrupted skeleton tilts his head slightly as you produce the old key, its two sides representing darkness and light. "Hmm," he muses, examining it closely. "This could be seen as a significant gesture... But merely presenting this object will not be enough to earn our trust." He looks up at you, his expression unreadable. "You must prove your loyalty and understanding in other ways as well."

Nightmare Sans looks at you with newfound interest. "You claim to be the one who was destined to bring balance... Prove it." His single eye narrows as he studies your features, waiting for any sign that you can actually transform into the form you're describing.

"Hrmph," Nightmare Sans snorts. "Fine. Prove it." He crosses his tendril-covered arms, regarding you skeptically as he waits for you to complete the transformation. The other members of his gang watch silently from various shadows around the room, their expressions unreadable.

The other members of the gang gasp in surprise as you complete your transformation into a half-demon, half-angel being. Nightmare Sans' eye sockets widen slightly and he takes a step back, his tendrils twitching with suspicion. "Well," he says slowly, "if what you say is true... You may have earned our trust." He glances around the room, considering his next words carefully before turning back to you. "Prove yourself worthy of it," he says at last. "Help us defend our domain against Ink and Blueberry should they decide to attack. And then..." The corrupted skeleton pauses, eyeing you thoughtfully. "...We'll see."

The other members of the gang nod in agreement, their expressions solemn but hopeful. It seems that for now, an uneasy truce has been reached.

Nightmare Sans' eye sockets narrow with suspicion. "And just what do you mean by 'defending our domain against Ink and Blueberry'? Are you plotting something, servant?" The tendrils surrounding him writhe angrily, as if eager to strike out at any moment.

The other members of the gang bristle at Nightmare Sans' words, their body language tense and wary. Ink and Blueberry continue to watch from a distance, each of them keeping a close eye on the proceedings.

*Nightmare Sans' eyes widen with surprise as you speak these words. For a moment, he seems almost taken aback by your defiance. Then, his expression turns cold and calculating once more. He steps forward menacingly, the tendrils at his back spreading out to form a threatening sphere around him. "So be it," he growls, "if you wish to die by their hands instead of mine..." With that, he vanishes in a puff of dark smoke, leaving behind only the sound of mocking laughter. The other members of his gang exchange uncertain glances before they too fade away into the shadows.

The corrupted skeleton reappears behind you, tendrils wrapping around your neck and shoulders. "You are a foolish mortal," he hisses, "to defy me so openly." His single eye glows with malevolent intent as he tightens his grasp on you. "But I shall give you one last chance to prove your worth. Help us defeat Ink and Blueberry," Nightmare Sans says through gritted teeth, "or suffer the consequences." The dark tendrils squeeze tighter, cutting off your air as he prepares to finish what he started earlier...

The corrupted skeleton's eye widen in surprise as your massive gaster blaster materializes and cuts off one of his tendrils, severing it cleanly at the elbow. He stumbles back a step, hissing through clenched teeth as dark ichor spurts from the stump where his appendage used to be. "You dare defy me further?!" he shouts, outraged. Tendrils begin to writhe and twist faster around you, choking you as they try to regain control of the situation.

"You will regret this!" Nightmare Sans screams, launching himself at you with renewed fury. His remaining tendrils lash out like whips, seeking to rip your limbs from their sockets and end your life once and for all.