Undertale
Witness The Influence
But the Undying Rises

Amidst the screaming crowds in Waterfall, Frisk stands with dust on their hands, headphones beneath them lying in dust.

"NU! Hoomin killed Tem!" One of the various monster cat (things) lets out in response to a Temmie being murdered by the Unseen Influence! Various monsters scatter to the darkness, but Frisk takes that as their cue to kill as many as possible before they get away.

Chara and Gaster bide their time, but Roman cannot help but fidget.
"What are you guys doing?" He asks, continuing as they look over at him-
"That kid is out there killing people!"
"He's killing people because he's trying to bait us out. He probably doesn't even know where we are. If we show up, and give him all the ammunition he needs, he can just reset the game and destroy this place before we even arrive. We only have one shot, and we can't waste it saving people." Chara says coldly, causing Roman's pupils to shrink.

"I took this job to help people... Gaster, you cannot possibly agree with this cowardly human?!"
"Cowardly...?!" Chara seethes as Gaster responds, stepping in front of her.
"She's right, Roman. We cannot risk the human finding this area. The computer is still linked to the other side, our only hope at breaking this cycle is to separate ourselves from the Unseen Influence. Attacking them is very unwise." Gaster confirms, but Roman only shakes his head.

"I can't... I can't just not care, G! I have to try!" He says, running out of the room!
"IDIOT! STOP!" Chara yells out trying to catch him, but to no avail. He's already gone.
"Damn it... where did he go? He ran to the right... not the left." Chara lets out.
"Indeed. If he wanted to meet up with Frisk... he would have gone left. It seems he's going to Hotlands. Perhaps our lab."
"Your lab? For what?"


/BUTTHEUNDYINGRISES
/ANDOFCOURSEITSNOTENOUGH


The door is kicked down and Alphys flips around in her chair with a surprised look on her face.
"R-Roman?! What are you doing here?!"
"Alphys, there's no time! Your experimental human soul, I need it, now!"
"Wh-What?! I haven't even tested it yet! I haven't even compared it to an actual human soul yet! If I had just a few hours with Chara-"
"There's NO TIME! People are dying!" Roman yells out. Alphys darts her eyes around nervously. Breaking more than just a single sweat, she nervously nods.
"Okay... but don't say I didn't warn you. Here, here is the prototype human soul I've been working on." Alphys says, handing over what looks like a very lightly colored heart. While Monster Hearts generally point downwards, this one points upwards.
"Using my knowledge of how Humans forced us underground without a single casualty, it became apparent that their souls had some sort of power... I've yet to exactly pinpoint what it is about them that gives them this power, so this soul is... very physical. It's made of water, and minerals, and only laced with a trace amount of monster magic to make it usable by us. Roman, please... whatever you're doing... you can't die, okay?" Roman merely looks at Alphys as she says that.

"I cannot make that promise."
"..."

Frisk cuts through the denizens of Waterfall like it's nothing. Here in the past, the Monsters aren't fully aware of what humans are capable of, and a lot of them live in close clusters. Frisk is already at LV 19. He's killed hundreds of monsters already, but finally the realm of Waterfall goes silent.

He walks, his shoes spreading little dust footprints as he does so. As he walks forward however, there is someone in his way. He looks down to see a monster kid. Seems fish-like with blue scales and angry eyes.

"Y-You...!" The kid lets out, a few inches shorter than Frisk, wearing a striped shirt. The Unseen Influence behind Frisk smiles, causing a smile to break through Frisk. It's a demented looking smile that causes the Monster Kid in front of them to grow less bold...

"Y-You... you killed everyone...! Why?!" She begs for an answer.
"They were going to let you... live down here! Gerson told me stories about humans... about how they were strong and forced us to live down here, and the monsters in the underground let you in anyway! They had nothing but kindness in their souls... and you killed them! Why?!" The blue scaled monster kid lets out. Frisk merely cocks his head and opens his mouth.

*"Undyne..."

"Wh-What?! How... do you know my name?"
*"Do you fancy yourself a hero?"
"I... I..." Undyne the Monster Kid lets out, backing up slightly. As she backs up, Frisk moves forward, causing them to flinch and fall on their butt, looking up with terrified eyes.
*"That look... I know that look... that look is so... satisfying to see."
*You grip the real knife you got from New Home in your hands tightly.
Undyne quivers anxiously.
"H-Help..." She says so quietly a mouse couldn't hear her. But as Frisk slashes down-
"AHHHH! HEEEEEEEELP!" She cries out as loud as she can, covering her crying face with her hands!

*99,999,999

Undyne, face wet with tears, slowly opens her eyes to see a Monster has taken the blow for her.

"...!" She can only emote, snot going down her terrified face and her eyes still dialated from sheer terror, her heart going a mile a minute as the demon in front of her is covered with the ashes of her friend and family, but still, a hero came and took the hit for her. The person painfully looks back with a bony smile on his face.

"K-Kid... you... have to run..." He says, falling to his knees, a gigantic slash down his chest, some strange red liquid leaking from it.

"Y-You... you're hurt... I... I..."
"It's... nothing... I... I won't let him hurt you..." He says with tears in his eyes.
"Please... kid... run...! Leave h-him... t-to me!"
"But-"
"GO!" He yells out, the strange red liquid dripping from his mouth! Undyne snaps to her feet out of instinct and runs out of sight. The monster that Frisk doesn't recognize coughs up a small amount of red liquid.

"I-It's not... right. With... just one blow... I'm already... d-damn it..." He closes his bony eyes.
"Alphys... Asgore... Toriel... G-Gaster... with just one hit... I'm already... d-damn it... I won't... let you...!" Roman says, his body destabilizing into dust, falling to the ground!

*You cock your head. "Sans?"

With that one word, Roman is shocked back to reality.
"Yes... yes it all makes sense..." Roman says, his body no longer falling apart. Still half-destroyed, he begins to speak up.
"Chara was telling me... of two skeletons... Sans and Papyrus... ha... I was foolish to not see it until now... but... I can feel it..." Roman says, putting his hand to his chest, the lightly colored human heart now beating a blood-red! His body recovers its stability, and he stands to his feet!

"This... isn't about me... or about Chara... is it? This is... all about the future... about YOU...! You so very much wanted the story to continue that you didn't care who had to die or get hurt...!" Roman says, the red liquid from his chest dripping more and more! Even as his body leaks more of it, he continues to stand up stronger and stronger!

"But I won't let you... not anymore! Deep... deep down in my two souls... my Monster Soul, and now my Human Soul..." He says, the blood-red soul within him reacting with his white Monster Soul!
"I can feel them working together as one! That this world... resists you! The soul of the world...!" He says, his eyes beginning to glow! The earth begins to quake a small bit.

"Human! Unseen Influence! Chara, Frisk, WHATEVER your name is!" Roman yells out, his body beginning to solidify into a different state!
"I... ROMAN... WILL GIVE YOU..." He says, his body exploding into a new form entirely!

As his monster dust settles, showing off brilliant black armor with two skull hilted swords, he speaks one last time.
"A VERY... BAD... TIME...!" He yells out, his left eye exploding blue and his right eye exploding orange, his two souls glowing within his chest!


*Roman the Firstborn
*ATK 999 *DEF 999
*The Worldsoul reacts to this noble Monster and refuses to let this Unseen Influence exert control over Frisk so easily! Every card turns against you!


The fight begins according to the rules of the world, forcing Frisk to have the first turn! Frisk slashes down with the true knife!

97,671

A brutal attack which reduces Roman's health by a good chunk! But Roman attacks with his two swords, one blue and one orange! Roman turns Frisk's body blue and smashes him across the room while attacking with nearly undodgable orange attacks! Frisk takes massive damage, and before he knows it, he's already dead for the first time.


*-GAME OVER-


"What is Roman doing?! Frisk is going to kill him!" Chara lets out, before blinking once.
"Wait, what just happened?" Chara looks around the room. Chara looks back at the monitor to see Roman in his original state, with Undyne behind him.
"Didn't we just see this happen?" Chara asks, looking at Gaster.

"It appears that Frisk died, and reloaded their game. The world was slightly reset."
"This is bad... if Frisk keeps resetting, we won't be able to make any progress!"
"We seem to remember the timelines after the reset... if Roman can keep Frisk busy long enough, we can think of something." Gaster says, looking at the giant computer.

Chara and Gaster begin to ask the computer hundreds of questions, hoping to find a useful answer!

89,977

Frisk strikes Roman again, this time deftly dodging his first attack! He already died once, Roman hits incredibly hard, hard enough to kill in only a few hits! Frisk strikes again after dodging, but Roman himself also dodges, catching Frisk off guard.

"With the power of this human soul..." Roman says, impaling Frisk's heart with his two swords!
"This world... will live on!"


*-GAME OVER-


"Damn it, the world reset again! We need to ask it different questions, shorter ones!" Chara lets out.
"World! Is there a way for us to save Roman?!" They ask as it prints out a piece of paper. It's completely blank except for a single word.

"Mistake"

92,228

Reloading the world to try again, Frisk once again hits Roman for massive damage on the first turn, and dodges their first attack! However on this second turn, Frisk does not attack, knowing that Roman will simply counter attack, and instead ACTs.

*You tell Roman that there is no point in resisting, that every time you die you will just come back stronger, faster, and smarter.

"Every second I hold you off... more of my people get to safety! I do not care if I die, I do not care if I become nothing! I will strike you down!" Roman says, striking at Frisk, who barely dodges those attacks well enough to counterattack!

99,454

Roman recoils and launches a series of color coated red and blue attacks! Frisk reacts instinctively to them, but Roman stomps on the ground to cause something to rise from it! It looks like some kind of skull machine, but is obviously different from a Gaster Blaster.

"Sorry G, I have to use this prototype too!" Roman yells out as it shoots black beams at Frisk! Frisk gets nicked by it and goes on the defensive!

"It's one of Alphys and Gaster's experiments... a long time ago they fiddled around with the idea that humans have some sort of super power within them that lets them change the course of the world... but without a human soul to experiment on, they had to turn to alternative methods. This... Void Blaster... is proof of their endevours!"

Roman calls up a dozen of them that all shoot Frisk at random intervals! Frisk remembers the attack pattern from Sans in the future, but this one is much faster and unpredictable. Before he knows it, he's dead again.


*-GAME OVER-


"Mistake? What does that even mean?! You guys keep talking about it, but you never told me what it means!" Chara yells at Gaster! Gaster sighs and looks over.

"Roman's mistake... a machine he made a long time ago to attempt to come into contact with the other world. Much like this one, but instead of sending information... it would send bodies. He tried to contact the other world... and it almost got us killed. It created a black void underneath the Core. He kept using the machine to go back and fix what he did, but it always made it worse. We eventually fixed it with Alphys' help, but his machine remains. It's likely still in the darkness left underneath the Core. But... we could never reach it in time. Not with Frisk constantly reloading the world every time they die."

"Then... is there no hope?"

99,889

Frisk continues their assault on Roman, never giving up! No matter how many times they die, they will slash at Undyne, only to hit Roman, Roman will give his speech and revive in this form, and Frisk will attack them! Frisk will attack them and get a little farther every time! It doesn't matter HOW long it takes-

92,666

Frisk WILL kill Roman!

Roman brings up the Void Blasters again, but they seem somewhat different, attacking faster and wider than before!

"Their Void Blasters appear stronger! They must have succeeded in draining you of that power they were talking about! Hah, how many times have I killed you already, human? Every time you die... these machines will get stronger! I will not let you win!" Roman yells out with a bony smile and firey eyes!

Frisk dodges the void Blasters regardless, taking a small amount of damage, but not enough to kill them! Frisk bounds backwards and lunges at Roman, dealing another glancing blow!

89,989

Frisk then returns to his defensive position as Roman slashes at him with the two swords AS the Void Blasters start launching at him! Frisk barely has time to react before one of them spawn in his face and blow his head clean off.


*-GAME OVER-


"Damn it! I didn't even make it to Hotland!" Chara yells out, respawning back in Waterfall since Frisk reloads the game.
"We need a different plan. Computer... is there any way for us to reach The True Core faster?" Gaster punches in a question for it to ask the other side. It prints out another piece of paper.

"Worldsoul"

99,900

Frisk attacks the first time, dodges all of Roman's attacks, and then acts, to taunt him into spawning Void Blasters! After he dodges all of those (now faster and more numerous) Void Blasters, he attacks again!

97,780

Then Frisk dodges more and more, once again hitting him for the third time!

99,332

The Unseen Influence is Determined to defeat this powerful foe in front of them! Roman starts the combo Sword and Void Blaster attack, and Frisk reacts well enough to only get hit a few times instead of outright dying! But Roman can see it in his eyes. Roman has become good at reading faces.

"I've killed you 3 times already, haven't I? Guess I'm pretty good at my job, huh?" Roman taunts with empty eye sockets! Frisk retaliates with a fourth attack, but Roman dodges again like that one time on the second turn that Frisk has never since attempted to replicate! After Roman Dodges, he attempts to slash down, but Frisk blocks it with his Real Knife, and blacks the swords away, only to stab Roman in the chest again!

99,990

"Hah, you're gonna have to try harder than THAT!" Roman yells out, the entire battlefield becoming engulfed in orange fire!

"While I've been having fun toying with you, human, it's time for the power of Monster Magic and Human Willpower to come together!" He yells out, the orange fire becoming accented with a blue hue, his two firey eyes spiking in intensity, his black armor becoming twisted in the glorious flames! It seems that Roman has been holding back this whole time...

*The concept of fighting such a worthy foe fills you with DETERMINATION

Void Blasters dance around the battlefield launching off cheap shots, even as Frisk attempts to access his menu! Frisk goes for the attack, but Roman blocks it with one of his swords!

1,900

"Pathetic." Roman lets out, punching Frisk in the chest and causing them to bound backwards and annihilated by a Void Blaster!


*-GAME OVER-


"What is the Worldsoul?" Gaster asks.
"The Worldsoul is at the center of this world, in the future, The Unseen Influence destabilized it by messing with how the world works! But Frisk fixed it and took control, allowing all of us to come back to this timeline! I don't know how to access the Worldsoul without Frisk's help, though..." Chara lets out, defeated.

However, the computer prints something out without it being asked a question. It's written in Wingdings. Gaster reads it out loud.

"Chara, remember your Destiny. Everyone in this world has a role. Retake yours." Gaster reads. Chara diverts her eyes.

"My role...? ..." Chara remembers something as she closes her eyes.

"The demon..." She says quietly. Gaster looks at the computer with a strange look on his face, remembering the possibility of another Gaster out there, communicating with them.

Roman can see it in Frisks's eyes. Frisk has seen Roman when he was no longer holding back, and Roman smiles and shrugs.

"Heh... human, it was terrible meeting you, but apparently I got sick of your shit and killed you. So let's just get to the point." He says with a snap of his fingers. The fight doesn't begin as usual, and Roman starts off at full power instead! Frisk attacks, only to be blocked again!

1,777

Doing less than 1% of Roman's health with that attack, and being forced back with a single attack frustrates Frisk.

"You're never going to beat me, Human. You can try a hundred times, a thousand times, but then again, I never learned when to quit. So by all means, COME AT ME!" Roman taunts!

Frisk growls, realizing that this is a completely unreasonable situation, it could take them thousands of attempts to even memorize these attacks, but the lasers keep getting stronger every time Frisk dies! There is a very real possibility that Frisk will never, EVER, be able to beat Roman...!

"Getting tired, human? Tired of trying? Good. Why don't you do me a favor and die?" Roman says, throwing his sword at Frisk, who doesn't move. The sword impales Frisk's chest.


*-GAME OVER-


"Did... the Unseen Influence just give up?" Chara asks, then continues;
"How the hell did Roman get so strong?! I've never seen anyone able to resist damage like that before...! Frisk was never able to be stopped by such odds in the other universe, but Roman... Roman never even dropped below half health, and now he wont even drop below 90%! We... we might seriously win this!"

As Chara excitedly says that, a brief static wave overcomes them. It lasts less than a second, but for a while, the entire world turns black and white with the hiss of static.

"... What was that?" Chara asks.

Frisk once again restarts the battle with Roman, having died a fifth time. They now recognize how impossible it is to play by the rules.

"Hey, that face... that's the face of someone who got killed five times. Want to make it six?" Roman says with a wink.

Frisk is not amused.

The Void Blasters fly up to point-blank range and unleash their full power on Frisk, who doesn't move.

"HA! Just giving up? I like it." The Void Blasters reduce Frisk's health to 0 in an instant. However... Frisk still stands.

"H-Huh? What's going on?" Roman lets out, surprised. He growls and takes his swords and slashes at Frisk several dozen times, sending his health to -260/92

Frisk smiles.

"What the?!" Roman tries to say as Frisk stabs him with the True Knife.

99,999,999,999,999

Across the chasm, Chara covers her mouth in shock, Gaster's eyes go wide, Alphys screams in terror, and Frisk can only smile.

*"I... am this world's true master." You let out.
*"There is no such thing as an unbeatable enemy... and I have proven it here and now." You continue.
*"Roman... return to whatever pit you crawled out from."

"Heh... heheh... hahahahahahaha!" Roman begins to manically laugh as their body begins to crumble before Frisk.

"To think... that the only way you could beat me... was to cheat... hah... n-now I know... now I know what Chara was talking about... you... you really are a scummy... son of a... hah... I... I don't want... to die... I thought... I would be... stronger than this...!" Roman tries to say as his entire body fades to dust, his two souls darting out in other directions, to be lost randomly in the underground.

For a while, the Underground goes completely silent.


Author's Note: I'm rehosting the Unseen Influence Trilogy on account of my patron vanishing. This story will be deleted if he ever returns. Until then, enjoy yourself.