(Note: If you haven't read the update for Fool's Endgame, I heavily suggest doing so. This is the finale for Puppet Book 3. If you haven't refreshed yourself on what has been happening best to take the time to do so.)

404 stood there, high and in front of Fun!Frisk and Omni. His eyes kept on Calculated Heaven. 404 looked up towards it before then looking at the string and absorbing it into his hand. "You're a fool, as always." Omni said.

"Hey!" Fun!Frisk said towards Omni who just looked away.

404 then watched as all the multiverses began to circle and wrap around it. "Its going to start soon. What's your plan?" Omni asked.

"Simple, first, get the attention of the big guy, and then I'll face off against his little science project. Hes clearly using its connection to reality to keep it together. However if it truly depends on the hopes and dreams of everyone. Then I need to stop it from gathering power from them." 404 said

"OOOOOOo! Watching you plan hubby wubby is SOOOOOoo brutastic!" Fun!Frisk said

"I don't care what it is, its true visage makes this impossible. You are fighting not even an uphill battle, this like trying to climb a 100ft straight wall an infant...armless." Omni said as he crossed his arms cracking his neck. "HEY! You watch your tone when your speaking to the king like that! Your a sans aren't you? Show some fucking respect!" Fun!Frisk said with a stern tone.

"Tch! This man is no king of mine." Omni scowled

"For your goddamn information, I wouldn't want to be SHIT of yours." 404 said turning to him as Fun!Frisk then moved over towards him and wrapped her arms around his. "Pay no attention to him, hes just a filthy reject. I mean look at him. What kind of Sans has a third eye right? PATHETIC. Not worth spending a moment on." Fun!Frisk said.

404 looked to Fun!Frisk and jerked his arm away from her before turning from Omni. "Stop being so clingy. I said I'd make you queen, not that'd I'd be your boyfriend." 404 said as he began to practice for a while with his black string, which he would then duplicate into others.

"Hey! The hell you mean I'm not your gf?!" Fun!Frisk

"What do I have to tell you the old "I don't swing that way" line or something?" 404 said in an annoyed tone. "I can't rule by myself!" Fun!Frisk said.

"Guess your not a feminist then?" 404 asked. Fun!Frisk scoffed.

"Hey look here, you owe it to me to rule by my side." Fun!Frisk said "I don't owe shit to you!" 404 said.

"OH Don't even try to play that bullshit card with me buddy! It may not be no blaster, but manipulating the probability of you not losing your skull is still something. Now I'm sorry you that you can't see probability, but its a thing ok? And I helped you in making sure it didn't screw you over." Fun!Frisk said "Hehehehaaa! I like her. She knows how to bite." Maleware said in 404's mind.

"Shut.The.FUCK.Up." 404 said to Maleware telepathically.

"..."

404 thought to himself for a moment.

"Look, all of this wouldn't even have happened if the current king wasn't such a sleaze and had such a terrible lack of awarness he wouldn't he even be able to find his own feet.

You are a God, not a king. Where a mere mortal may fail, you will succeed. Come on, you know the crown is yours to have and you should possess it with all the authority and power in the WORLD!" Fun!Frisk said as 404 side-eyed her.

"...Shes crazy." 404 thought

"Funny statement, coming from someone far more crazy ehehehehe!" Maleware laughed. "WHY IN THE HELL ARE YOU SUDDENLY SO TALKATIVE?!" 404 shouted in his head.

"HAHAHAHAHAHAAA!" Maleware laughed. 404 groaned as he then looked away.

"You know I'm right 404, if this multiverse was being run by you, then nothing like this would have happened. Nothing like this could happen." Fun!Frisk said. 404 then looked up as absorbed the strings. 

"We'll talk on this later alright?" 404 said as he then summoned a blaster and jumped onto it, Fun!Frisk would then hop on the back of it and wrap her arms around 404's waist.

"...I'm not going to lose Ares...not when I'm so close.

...

...

But if I do fail...then maybe this penance...something thats been coming to me for centuries. I don't even know if I should fight against it or not, But my body moves ya'know? On its own. Probably because its what I should have done...when I was given that horrible choice.

So I don't give a shit what you say, I don't care how impossible it is, I don't care how stacked against me the odds are. I'm still going to move forward, no matter what." 404 said as he the flew off on the blaster, with Fun!Frisk behind him. The two would fly high into the void between multiverses, high and close near to Calculated Heaven.

"So, outside of your incredibly moving speech, what exactly is the plan again?" Fun!Frisk asked "We need to stop it from taking the Hopes and dreams of everyone here. Once thats done, then Ares will be right. It will be over. I don't care if it happens to find a way to get to the rest. If I can prolong this for even a few moments, I'll be able to get inside and stop this." 404 said.

"Thats great, but how do you plan to do that?" Fun!Frisk asked, 404 would then smirk as touched his face for a moment and saw a single black string come from it. "By borrowing a trick from my pupil." 404 said as he then pulled black strings from the cracks along his face and sent the strings out all across reality itself.

And suddenly everyone in every Multiverse in all of reality froze in place.

"What? Who could be doing this?" Code!Gaster said as he then brought up a screen and saw him-

"Your move, old man." 404 said with a wide grin, Code!Gaster's hand shook for a few moments before slamming his fist against the ground.

"Damn you, WILLIAM! Why can't you just give up!" Code!Gaster groaned. He looked around for a moment. "Where in the hell is Mecha?!" he shouted.

Outside of Calculated Heaven 404 and Fun!Frisk would land on its surface. Fun!Frisk would immediately run around jumping and flipping around. "WEEEEEEE! HAHAHAHA! Look how big this thing is! We should have something like this ya'know! Tehehe." Fun!Frisk laughed as 404 walked past her and towards a massive crack in the surface of the structure. 

"This you Ares?" 404 thought. "Hm? Thats a nasty blemish." Fun!Frisk said.

"And its our way inside." 404 said as he then raised his hand up and summoned his blaster, he'd turn his head to it and then summon 100 more. Fun!Frisk looked in shock at this.

"I thought he was all out of stamina and magic, yet his energy still looks to be endless! Incredible!" Fun!Frisk said.

"Just one of these at full power can obliterate a Multiverse if I need it to. 100 of them at full power will be more than enough to break through this outer shell." 404 thought, but just as he was getting ready to fire them all-

"LOOK OUT!" Fun!Frisk shouted to which 404 would turn around only to be tackled and dragged by his skull along the ground by none other than Mecha404. 404 would use his blue mastery to toss Meecha404 to the side. 404 quickly got up, Mecha404 would do the same.

"Let me-"

"No! Save your energy. I don't know how long you can do what you do. I can't take any chances." 404 said as he gestured for her to stay back. "I can't have my trump card being useless, I'll take care of this machine." 404 thought.

"[Obstacle recognized: Error404 . Mission: D E S T R O Y]" Mecha404 would say.

"Is that right? Well sorry to say, but I'm not looking to get replaced by some bag of gears and fucking bolts. So I'll pass." 404 said "[Your cooperation is: Unneeded.]" Mecha404 said.

The two would stare at one another for a few moments. However in those moments a large screen with Code!Gaster's face would appear behind 404.

"Well, this is a surprise. You actually managed to find a way to halt everyone's journey to a better life. How like your kind to do such a thing.

Do you have any idea how cruel your actions appear to everyone, how insane you are? You are willing to stop everyone's chance at a better future just because its not what you want. Since when did you speak for everyone huh? Since when William? Since when did you become the deciding factor?" Code!Gaster asked.

"...Know this old man. I don't give a shit about none of that. Am I insane? Maybe, am I being incredibly selfish? Of course I am. 

I've had everything taken from me too many times. I refuse to be robbed of a say on the matter just because some old coon lost his baby boy." 404 said

"What did you say?!" Code!Gaster shouted. "When I get in there, I'm gonna smash your skull over your masterpiece, but not before I let you watch as I tear it to shreds." 404 said

"TCH! Mecha! KILL HIM!" Code!Gaster shouted in which Mecha404 would immediately fire off its rockets and blitz towards 404, with 404 doing the same. 

Inside of Calculated Heaven Code!Gaster would look to see his hands shaking, the code beginning to take its effect. "...Damnit it all. If he weren't made form some exterior source, this entire thing wouldn't even be happening.

Yet somehow it seems fate would see him spared. Well, I won't have it CH! We have to make preparations." Code!Gaster said.

"You believe that William will come up victorious?" Calculated Heaven asked

"The fact you must ask me already lets me know that this...no. I refuse to be told that I cannot make this choice! If he is to have the will to imprison all in hell, THAN I SHALL SHOW HIM THE WILL TO BRING THEM ALL TO HEAVEN!" Code!Gaster shouted.

Above, on the surface of Calculated Heaven, Fun!Frisk watched as 404 and Mecha404 clashed with one another constantly. Each of them battling with everything they had. Mecha404 would jump up and then blast his way down going or a devastating punch, but 404 would vanish from sight via his teleportation. Mecha404's scanners looked around, tracking his ethereal and magical aura, which would then allow him to quickly turn to his side and side step out of the way of a god ray being shot just as 404 reappeared.

"Huh, upgrades." 404 said

"..." Mecha404 would then fire his god canon, but just as 404 was going to dodge it, Mecha404 would blitz behind him-

"HES FASTER?! BUT JUST A SECOND AGO WE WERE MOVING AT THE SAME SPEED!" 404 thought, in that moment Mecah404 would then blast into 404 causing him to ram right into the god canon blast causing a massive explosion. Fun!Frisk covered her face as shards of the outer shell of Calculated Heaven flew all over the place. 404 would skid backwards, and as he looked up he'd be kneed in the chin by Mecha404. Mecha404 would then go for a punch, but his attack would slow down until came to a dead stop at 404's nose. Mecha404 looked at his arm to see black strings wrapped around. Mecha404 looked back to 404 with a head tilt.

"Yea...you ain't the only one whose upgraded." 404 said as he then whipped his hands around which would see Mecha404 go flying into the air. 404 would slam Mecha404 around the ground and would then jump up and spin around before launching Mecha404 towards a stray Multiverse in the fa distance.

Mecha404 would slam against it shattering it into trillions upon trillions of pieces, 404 then landed back on the ground with a impressed smirk.

"RIDES NOT OVER YET FUCKER!" 404 shouted as he then turned around and flung to another one, this time Mecha404 would bounce off of one and slam into another.

"Hehehe, I can see why Error likes these now. Maybe I should use them more." 404 said as he then turned around again and would slam Mecha404 once again into another Multiverse destroying it. Afterwards 404 would watch as Mecha404 stayed limp in the air, floating around for a few moments.

"This thing, tanked all of that and still its intact. Just what the hell did they build this thing from?" 404 thought, and for a brief moment 404's fingers cracked and relaxed. However that tiny bit of slack would trigger Mecha404 to immediately reignite once more. "SHIT-"

But it was too late, Mecha404 would spin around in place wrapping itself up in the strings 404 had put on it, and in seconds would be blast itself into the distance taking 404 with him. In moments Meha404 would reach the end of reality and land on it, 404 following afterwards and slamming into with his head. Mecha404 would then again go flying back into the heart of reality, except this time as he dragged 404 along, he'd fly as many Multiverses as possible, with 404 smashing against them as well. He'd eventually stop in a stray universe in a random multiverse, 404 following shortly after and slamming into the ground. 

Mecha404 would turn around and untangle itself and then pull 404 towards him via the strings and then punch him back, he'd do this multiple times until finally punching 404 into the air and pulling him back down- Only to turn his arm into a cannon and then blast 404 right in the face sending him flying throughout the galaxy. 404 would finally regain consciousness and wake up, he'd look back only to get a taste of Mecha404's fist as it smashed against his jaw causing him to spin out of control for a moment.

Mecha404 would then land on a nearby comet. He'd then combine his arms together and charge up a massive beam attack and fire it at 404, the attack so powerful it snuffed out all matter within the universe itself. 

Once the chaos cleared briefly Mecah404 looked around for 404.

"That was a hell of an attack back there. Too bad that I'm adapting to you too." 404 said behind Mecha404, Mecha404 would summon a blue heating blade and take a swing at 404 only to miss. 404 would then appeared behind Mecha404 again, but this time when Mecha404 reacted, he'd teleport back to where he first appeared and then would shoot Mecha404 in the back of the head with his god ray.

"GOTCHA!" 404 shouted. Mecha404's systems stuttered for a brief moment-

"[Systems offline...Rebooting in 30 plank seconds.]" Mecha404 said much to 404's surprise, 404 immediately went to fire his next shot, but Mecha404 would use his blade to cut off 404's hand and then grab him by his face and slam it into the surface of the multiverse in quick succession. 404 groaned as he got up only to have Mecha404 place his foot on his back and keep him on his hands and knees.

"[Objective: Kill Error404 Sans. Mission Status: Completion imminent.]" Mecha404 said as it then got its left arm and transformed it into a another cannon. "You know, you talk a lot of shit for a walking fucking toaster oven." 404 said as he side eyed Mecha404 who simply stared at him.

"[Analyzing objective weakness of target: Analyzing....Analyzing....Analyzing....Analyzed.

Weakness?

Target is made of bone...

Not  M E T A L.]" Mecha404 said. 404 scoffed and chuckled.

"You really think thats my weakness?" 404 asked. Mecha404 then pointed his weapon at the back of 404's head.

"[Objective weakness shared. Other possibilities...unlikely.]" Mecha404 said, but just as he was getting ready to fire, 404 would push back with all his might knocking Mecha404 back. 

"Thats what I've always hated about you fucking robots and all your stupid calculations, you think you got it all figured out. Got me figured out. But thats where your wrong! 

IF I DON'T GOT MYSELF FIGURED OUT, WHAT MAKES YOU SO SURE YOU DO!? No one knows shit, and you never will. My weakness isn't what I'm made or where I come from. It all up here!" 404 said as he pointed to his head.

"Its all in my fucking head, don't you get it? My weakness. Its that I can't fucking stand how pathetic I am. I can't stand that I can't save the people who I need to, who I should! I can't stand that I can't bring my world back! I can't stand that I don't have the slightest FUCKING clue to what is going to complete my life!

But you want to know something? You want to know something I do know you bucket of bolts and blue hair dye?" 404 asked. Mecha404 simply looked at 404.

"Its the fact that you're all going to die, gonna die before I get a chance to show you what it is. " 404 said, Mecha404 then got ready for the 2nd round of combat. 404 began to walk towards him. Mecha404 backed up a few steps.

"Its a shame ya'know...you don't look half bad. For a knock-off." 404 said as the two once more clashed each other, 404 firing his god ray only for Mecha404 to fly over it and fire his god cannon at 404 who would use a half formed blaster to shield himself. The shards from the attack would fly past 404's face, scratching and scrapping it. Mecha404 would then use his rockets and blast through it, charge through it. As he did he'd see that 404 was nowhere to be seen.

Mecha404's scanners looked around, scanning for his enemy, but thats when a shadow would come over him. He'd look up to see a moon drop ontop of him. Mecha404 would fly out from under it only to then have another moon hit him. 404 was floating outside of the universe and was pulling celestial bodies from others and flinging them at Mecha404.

Mecha404 would dodge out of the way of one, only to be hit by another giant body of matter. Some were suns, some were moons, and some were black holes the size of a massive galaxy.

"COME ON MACHINE! IF YOUR REALLY MY COPY! THEN STOP GETTING HIT!" 404 screamed. Mecha404 would move away from a large moon being flung towards him, he'd then spin towards 404 like a needle and use its rockets to spearhead towards him.

"Thats it, come on." 404 said as Mecha404 would blitz right towards 404 and just before he made contact 404's mouth would widen as he said-

"Checkmate." 404 smiled, Mcha404 wouldn't be able to react quick enough as a random blast would come from beneath him and bite down before sending him flying towards Calculated Heaven. As it flew with Mecha404, he'd attempt to break free by punching and stabbing it, but nothing it did was going to break it. Fun!Frisk would see it arriving and squeal in fear as she ran away and ducked as the blaster holding Mecha404 would then smash its nose into the same spot where Omni first struck Calculated Heaven. It would then open its mouth and begin to fire upon Mecha404 and that exact same spot. 404 would float nearby and watch. 

"Not enough. Alright then...

I'LL JUST BREAK THROUGH BOTH OF YOU!" He screamed as he raised his hands as millions of blasters then each slammed into the exact same spot, each partially breaking and shattering as they each tried to get in close to the exact same spot and fire their blast with all their force and might.

"COME OOOON!!! ALL THE WAY THROOOUGH!!!" 404 screamed as he put both his hands down, each of the blasters then would have their eyes burning bright with 404's magic as their blast got that much more powerful. Mecha404's body began to fall apart as each second that passed, more and more of his defenses would shatter and break apart. 404 would then appear ontop of the closest blaster to the crack.

"YOU WANT MY EVERYTHING OLD MAN!? WELL HERE IT IS!!! THE DREAM IS OVER!!! SAY HELLO-

TO YOUR OVERDUE NIGHTMARE!" 404 shouted as he then fired a constant stream of go rays. Second by second, the crack above Calculated Heaven got bigger and bigger until-

B O O M

Fun!Frisk would watch as 404 and all the blasters collapsed into Calculated Heaven, as they did 404 and all the blasters would fall for what felt like hours until finally landing on solid ground. 404 floating down while the pieces and remains of the blasters fell across the ground. As he did he'd look ahead to see Code!Gaster sitting in a chair. 404 looked at the black strings still attached to his hand.

"Well...seems you made it." Code!Gaster said as he slowly clapped. 404 began to walk towards him.

"I told you I would stop you." 404 said

"From what exactly? Making a better future for everyone here? From wanting to save them from being pawns in your game? Are you so deluded by your own self-righteousness that you can't see how vile of person you are." Code!Gaster said as he rested his arms in his lap.

"..."

"Nothing to that? Thats uncharacteristically pose of you. Perhaps your mother was right about...you do learn to adapt. A pity-"

"ITS OVER OLD MAN!" 404 shouted as he flew right towards Code!Gaster, his hands ready to rip the old man's head clean off once they were on him.

"That you couldn't adapt enough to learn when its your time to die." Code!Gaster said, and in that moment behind Code!Gaster, 404 would see a red spear come flying at him too fast to react to. It would stab him in the shoulder and send him flying backwards and through the remains of his blasters. 404 would go spiraling and skidding along the ground. As 404 laid there, he'd feel a sharp pain course through his body, like liquid lava being poured into his very veins and he'd scream in sheer pain as the spear melted into his system.

"GAH!!! UGH AUH! SHHH- AHHHHHH!!!" 404 screamed as he slammed his fist against the ground as blood popped from his eyes and mouth. 

Code!Gaster sighed as a armored glove would pat his shoulder and then the clanking of armor would pass by him.

"You know, the best thing about knowing everyone's hopes and dreams is? You know who they want to protect them. 

I made Calculated Heaven to be a safe haven, a home. For them all. You thought you were going to come in here and face me? No. Your facing them, face against the combined hopes and dreams us all personified in the only woman who protected them most of all." Code!Gaster said.

404 would look to see exactly who Code!Gaster was talking about.

"Say hello to The Angel of Hopes and Dream, Undyne the Eternally Undying." Code!Gaster said as he sat up in his chair. Undyne continued to walk towards 404 who stared at her with frustration and shock in his eyes. 

"You've got to be kidding." 404 thought, only for Undyne to roar and rush towards him. She'd throw a punch at his head only for 404 to dodge and back up, but she would grab him by his shirt and bring him back in for a headbutt. Discombobulated, 404's eyes in a daze as Undyne then began to throw right and left hooks across his face until she would lift him over her head and throw him against the ground. Undyne would then wind her arm back to swing at him again, but as she did some random intense ray of light would hit her eyes, she'd throw her fist down, but would miss 404's face by an inch.

"..."

404 and Undyne looked in shock.

"Hey boo! I made it!" shouted Fun!Frisk getting everyone's attention as they saw her peeking from the massive hole above. 404 would take this chance and summon a small blaster and fire it right at Undyne's chest which would cause her to teeter back. She'd then turn back to 404 and grab his skull and slam it against the ground rapidly until 404 would use blue mastery to stop himself. Undyne used both her hands to force 404's head down, but 404 would then use his blue mastery to grab his black strings and wrap them around Undyne's neck and body pulling her back.

Undyne then would rip the strings off of her only for another set them to wrap around her right arm, pulling on her once more.

"You know, Error's strings are unpredictable. The soul will do what it wants, but instincts?" 404 said. Undyne growled as she then would see that the black string would infuse into her arm. She'd go to tear them off, but her own arm would punch her in the face.

"They do what needs to be done." 404 smirked. Undyne would dodge her own arm as it then grabbed her neck. 

"The mainframe can do wonders to just about anything, even to these strings. Its natural protocol is to protect itself, so what better method to use it. Then to cause it to focus on others who are threatening it." 404 said. Undyne coughed up spit and blood as she wrestled with her out of control arm. Her eyes would then move towards his direction.

"You must not have heard him, so long as everyone you have chained up continues to dream and hope! I WILL NEVER DIE!" Undyne shouted as she then would grab her out of control arm and break it over her knee. 404 then brought more strings down to Undyne, but she would only summon another one of her spears and begin to spin it around cutting the strings into pieces as she spun her spear around. 404 would back away as he began to fire god rays at her as well, but her spinning was so fast and precise, that it would deflect them. One of them whizzing past 404's head.

"Damnit! Even with that girl's abilities. I still can't land a hit." 404 thought "How about you let me finally take a bite of them? hehe" Maleware chuckled. 

"..."

"Being cautious are we? Why? whats the concern?" Maleware asked

"...I normally have enough to keep you at bay...I'm concerned about the fact that I may not be able to put you back if I let you out." 404 replied "You've been giving everything into this battle, should you mind now be off limits to your efforts? Don't be a fool William. It'll only be a matter of time before that woman reaches you and when she does, your dead." Maleware said.

"You sound pretty sure of that." 404 replied.

"Look, you've drained a lot of magic and energy. You're running off of fumes with how you're going. I'm surprised your still standing at all. Your mind is about to be fried. Don't be a fool boy, utilize it all. Let go of it all, worry about the consequences later, care about the actions now!" Maleware shouted. 404 took a breath as he then looked at Undyne who was still evading and slicing apart the many strings coming towards her.

"...Alright then. I'll use it all. Use every ounce of whats inside." 404 said as Maleware then chuckled and laughed.

"YES BOY NOW-"

"FRISK!" 404 shouted "Ah! Yes my king?!" Fun!Frisk asked. 404 then looked to Undyne whose eyes were honed onto him.

"Make sure that this works out. I need the 0.1% chance. Give me the slightest. Work that probability manipulation like you never have." 404 said as he-

"I don't understand-"

As 404 then pointed his god ray right at his head.

"WAIT WHAT ARE YOU DOING!?!?" Maleware shouted "Giving it my all." 404 replied as he then shot himself with his god ray twice resulting in his immediate death which would surprise Undyne and Code!Gaster. Fun!Frisk's eyes shrunk as she then began to use everything she had to make it possible to give 404 his chance this sliver of a chance...no much less than that-

Give him 0.00000001%.

And as 404's body collapsed to the ground, the insides of his mind had just a single moment-

In front of Sans and Papyrus's house in Underplayer, 404 was on his knees, tears rushing down his face as he had his hands together begging.

And upon that moment an eruption of pure force and power burst from 404's corpse. It shook everyone and everything in reality.

As not only had Maleware been allowed full reign to see the job done, but thanks to Fun!Frisk's manipulation of probability itself, it allowed for 404's rare transformation to occur ontop of that as well, bringing forth once again a rare sight-

J404!Butterfly

Upon this transformation, J404 would laugh uncontrollably. As the miracle had been done again. Once more, was he now greater than anything in reality, at least, he was willing to prove it.

"Well...this just got more troublesome." Code!Gaster said as he then would attempt to regain the Nullvoid code he had once, but would realize the process was too immense and the pain too great. Not only that, whatever code left was nearly useless. That is when Code!Gaster would realize that this code was modified by Vape, modified only to last for a certain period of time.

"Damnit...he planned this out." Code!Gaster muttered.

"AHAHAHAHAHAHAAAA!" J404!Butterfly laughed

"Tch, damn monster." Undyne said as she then summoned her red spear. "Huh what was that? You want to die first blue? So be it then." J404!Butterfly said as he then turned to Undyne who readied her spear. J404!Butterfly would then sprout out massive eldritch like-wings.

"I don't know why your soul and presence feel different, but it won't change a damn thing! I will protect everyone's hopes! EVERYONES DREAMS!" Undyne roared, but all J404!Butterfly did was laugh as he then raised his hand up to the ceiling. 

"Then you don't mind if I go all out off the bat do you?" J404!Butterfly said as he then blasted off the entire roof of Calculated Heaven and flying up high above it. Undyne would see Fun!Frisk plummeting to the ground, only to land on Code!Gaster cushioning her fall.

"Oof! Not the best landing." Fun!Frisk groaned. 

"Foolish girl! Do you have any idea what you've done!? Do you not care for your own reality!? YOUR OWN DREAMS!?" Code!Gaster shouted yet all Fun!Frisk did was laugh.

"Stupid old man, this is my dream." She replied. Code!Gaster couldn't believe what he was hearing, thats when he'd look out to see Undyne staring at J404!Butterfly from the ground.

"THROW WHATEVER YOU GOT CREATURE! I WILL NOT FALTER! NOT FOR A DAMN SECOND!" screamed Undyne.

"...ok." J404!Butterfly smirked as he then put both of his hands up and immediately brought forth a fully charged Omninova, which dwarfed everything in reality itself. In the distance Omni was still recovering when he too would be eclipsed by the light shinning from above. He'd stand up his eyes widening, however just as he was getting ready to stop what was happening his legs would shatter, causing him to fall.

"AH! DA-DAMNIT!" Omni groaned.

Undyne looked up at the attack.

"IF I CANNOT HAVE THIS REALITY! THEN I WILL SEND ITS ASHES TO GABRIEL'S FEET AS MY LATEST TROPHY!!!" J404!Butterly laughed as he then threw Omninova. "PERISH FISH BITCH!!!" J404!Butterfly shouted in joy as he pushed the attack with his force towards Undyne. Undyne's eyes would focus on attack, she'd get in a stance and ready her spear.

"I told you before-" Undyne said as she tightened her grip on her spear.

"I AM THE ONE WHO MAKE SURE THE HOPES AND DREAMS OF EVERYONE WILL LIVE ON FOREVER!!!" she screamed as she then tossed her spear right at the Omninova attack. The spear hit it like a comet and with a loud ear destroying bang, would send the attack flying backwards and right towards J404!Butterfly whose eyes opened wide with shock.

"WHAT!?" J404!Butterfly shouted, as the attack would blow right through him leaving only his lower half remaining as the spear and attack went flying right out of reality and exploding in a massive show that would dwarf all of reality nearly 100x over.

Fun!Frisk and Omni looked up at what happened in clear disbelief and shock. Code!Gaster simply dusted himself off.

"Come on Undyne..." He thought. Undyne would stare at J404!Butterfly's lower half as it landed on the ground on its feet. Her eyes didn't leave him for a moment as she watched him regenerate near instantly.

"AH! ...th-....that hurt." J404!Butterfly stuttered as he looked at Undyne in anger. 

"You son of bitch, THAT FUCKING HUUURT!!!" He shouted as he then blitzed towards her, with Undyne doing the same. The two would clash against one another, moving faster than anyone in reality could see or could go. The shockwaves of their clashes popping Hyperverses like ballons in the thousands. Eventually J404!Butterfly would swirl around and clash with Undyne once more before then using his wings to fire massive beams of pure chaotic power towards her, to which she'd use her spears to spin infront of her blocking the attack.

"D...Damn." She thought as she noticed the pieces of the worlds that had been destroyed around them. "I can't keep this battle up. I need to end this, end them. Come on Undyne. COME ON!" she thought before then jumping over her spears and then summoning two on her feet as she began to skate on J404!Butterfly's beams like they were ice. He looked up towards her and smirked.

"Oh I don't think so bitch!" He shouted as black spikes began to emerge from within the beams, and the beams themselves then would turn around back to her. She'd dodge out of the way of the spikes, but would be shot in the back by the beams's rebound attack which would send her flying lightyears away.

"HA! GOTCHA BITCH!" J404!Butterfly laughed as he then flew towards her, only for Undyne to turn around quickly and roundhouse kick his head clean off before then summoning two spears in both her hands and slicing him up like sushi. She'd hover a littles away, but that is when the pieces of J404!Butterfly would begin to twitch and change. Undyne's eyes widened as she stared at this and would see them all turn into J404!Butterflies. 

Each of them in a different pose, and each of them smiling and laughing at her. A drop of sweat went down her face.

"HAHAHAHAHHAHAHA! BANG BANG BANG BANG BANG BANG BANG BANG BANG!" they all laughed as they all fired god killer rays from their fingers and their wings bombarding Undyne in more attacks then she could deflect or dodge. One of them blasting her left arm clean off. She screamed as she then summoned a massive spear from in her mouth and flew right into the barrage, she would drop kick one of the J404s and then spin her one arm and head around with her body, turning into a deadly red razorblade that tore all of them apart, with only a few flying back to avoid the attack.

"Damn woman, just where s she getting all of this insane power from? Could this be cosmic power? No...its far too focused. Its code...damn coded monstrosities. Always thinking they have the one up just because you use your warped sense of logic." J404!Butterfly said as two others would appear next to him. They'd watch as Undyne would cut down the last J404 in the horde and look up towards them. Only to have them all use the glitch whip and entangle her whole body. Each of them pulling and tugging on her.

She'd resist against them, each of them chuckling and laughing as she did so.

"Your quite the strong woman, is everyone from this reality as well spirited as you? Cause if so, we may be good breeding partners you and I. I've always looked forward to the idea of having some spawn of my mine, if only to see them fight me later in life so that I may consume their strength as well hehehehehAHAHAHAHAHAHA!!!" J404!Butterfly laughed "...Sorry, but genocidal maniacs are not my type." Undyne grunted.

"Hehehe, your mistake is thinking your consent is something I require female." J404!Butterfly smirked as a strange and eldritch tongue came from between his fingers and licked his teeth.

"Fucking freak." Undyne said as she then pulled on the strings one last time, and as the other J404s pulled back, she would jump towards them, summoning a spear in-between her toes and ramming up on of their jaws and then kicking it to the other behind J404!Butterfly's head. "Stubborn whore." J404!Butterfly said as he then sucker punched Undyne in the face before then grabbing her neck and throwing he back down. To which she would end up collapsing in the anti-void of a rouge Multiverse. As she landed she would land on her back and then roll out of the way, dodging J404!Butterfly's beam attacks which would come in the hundreds as she ran, ran, and ran some more.

"YES! YEEESSS! RUN FOR ME SWINE! RUN TILL YOU HAVE NO MORE FEET TO RUN WITH! AND THEN-

I'LL CONSUME YOU FROM THE WAIST DOWN!!! AHAHAHAHAHAAA!" Undyne laughed as she then would jump and turn around throwing another spear at J404!Butterfly's head-

"BITCH!!!" He shouted as she would also be shot by one of his beams sending her sliding across the ground. Undyne would teeter back onto her feet. She huffed and puffed from exhaustion before then turning around to see J404!Butterfly land not so far away, his wing wrapping around the red spear in his head and pulling it out. It would then snap it in two. His eyes would change from their normal wild look, to one with more contempt and poise.

"I want to say something. I have fought many adversaries, I have killed hundreds of beings and hundreds more finer warriors. But you- 

You are by the mightiest I've faced yet. Tell me your name, so that I may remember it for all eternity." J404!Butterfly said, the wind howling in the distance causing for boths' clothes to flow elegantly.

"...Undyne." Undyne said.

"Undyne, my what a name for such a great enemy. Undyne, had we met in different circumstances. I believe we would have made for excellent companions in combat. A pity, your story ends here." J404!Butterfly said as he got ready to charge towards her. Undyne simply summoned another spear in her hand. J404!Butterfly would immediately appear in front of her and begin to throw a volley of claw and kicking attacks which she would block with her spear, she'd then push him back and kick him back. She'd then point her spear at him, but thats when she'd notice he had no soul, not even code.

"...Damnit...wait." She thought, J404!Butterfly would then fire his massive winged beams again towards her, Undyne this time running and dodging through them. J404!Butterfly would notice this and instantly try to take to the air, but Undyne would reach him to quick and would then stab her spear into his chest.

"YOUR GREEN NOW!" she shouted before then removing her spear from his chest. She'd drop to the ground with J404!Butterfly healing quickly afterwards. "Tch- Green? What in the world does that-" However he wouldn't be able to get a word in as suddenly a massive arrangement of spears would appear all around him, appearing in such a massive set that they would dwarf Graham's number by 30x. J404!Butterfly's eyes shrunk from the sight. Undyne cracke a wide smile.

"Sorry, I'd give you a spear. But I promised everyone's hopes and dreams that I'd win this. But hey, I know you wouldn't just stand there, right?" Undyne said as she then pointed her spear towards J404!Butterfly which would cause them all to begin flying towards him.

"This isn't Omni-directional, this is a sick joke. Theres no way to move out of the way of this...damnit!" He thought as he then wrapped himself in his wings and began to be skewered by all of the spears. Undyne watching as it all happened. J404!Butterfly after some time, the moment a bit of leeway was given in the barrage would plunge towards her, moving like a missile as he went for her. He'd fire his beams  towards her, but she'd simply block them and jump back. Once J404!Butterfly landed it was right back to blocking the onslaught of spears. He grunted as they stabbed through his wings, neck, back and legs. 

"I-I-I'm gonna actually die if this keeps up..." J404!Butterfly stuttered as he began to slowly make his move, and slowly walked towards Undyne while still blocking the spears. Undyne was sweating refusely, she would then make the speed faster and the impact more intense, which would cause J404!Butterfly to fall onto his back and pin him to the ground.

"SHIT I NEED TO GET ON MY FEET!" J404!Butterfly thought, but he'd only be able to get to his knees due to many spears having pierced into him. He'd block them still, using his wings to the best of his abilities, but his wings were being turned into swish cheese from this barrage. 

...

...

...

Once it all cleared, Undyne would look upon the literal spire of spears all stabbed into J404!Butterfly. His body frozen in a pose of defense. She just looked at him.

"...You know, when I was made...I was told you had no remorse. That you were a cruel monster and deserved nothing. Nothing in this world. 

However, for a moment when I saw you, I thought that maybe the old man was wrong. That maybe, just maybe, I can spare you, but no. Your not like that at all, your a heartless beast, one who won't stop till you have your way. One who won't stop till everyone's hopes and dreams are annihilated because of one selfish dream you have, of a hopeless hope you cling onto.

Don't you get it? Its over. This battle, this fight. Its over. I can fire my spears at you forever and you'd never reach me. Just give up, and let this be the end of your journey...

...

...

Is it so bad? To just give up." Undyne said, thats when she'd see J404!Butterfly's body begin to crack and fracture away, slowly turning to dust. 

"Ah, even a beast like you turns back to ash I see." Undyne said as she watched as J404!Butterfly's black ashes flew away past her, she then would turn to Calculated Heaven which was very far away.

"Now that its finished I-"

POW!

Undyne's eyes would shrink at the sound, she'd slowly look down to see a massive hold in her chest. Blood would begin to pour out and down, her spear dropping to the ground fizzling away as she dropped to her knees. J404!Butterfly would walk past her, slowly reforming back to normal. 

"Heh, oldest trick in the book. A fake death. Come on now, I thought you were a warrior." He said, but Undyne simply groaned as she attempted to summon another spear but failed.

"Now come on, what was it you said? Theres nothing wrong with giving up? Hehehe. See you around hero." J404!Butterfly said as he then began to walk away.

"This...this isn't nothing....just a scratch....just...." but as she spoke, she'd slowly begin to fade away, her code beginning to fizzle away.

J404!Butterfly would then ready himself to fly before-

"No..." Undyne said

"..." J404!Butterfly stopped as he then slowly turned his head to see Undyne still keeping somewhat in shape. "What is this? That attack annihilated your soul I'm sure of it." J404!Butterfly said with a stumped tone.

"My entire existence feels like its being ripped apart, like at any moment I'll drop into nothingness and never return.

But...deep...

deep in my body I feel something-

Theres a burning feeling I can't describe-

A burning feeling that won't let me DIE!

This isn't just about the hopes and dreams of everyone here anymore I can feel it. If you get past me, you'll ruin more than that. Their futures, their children's futures and beyond that too! Their worlds even!

But...I can't, no, I WON'T let that happen. At this moment, I can feel the warmth of everyone's hopes and dreams, all of them clinging to me as ONE!

Creature, no, your more than that. I know that know, but heres something you'll I'll let you know now!

For the sake of the future of everyone's better lives, and for all those who scream out for a hero when hell is at their door!

I, UNDYNE, will strike you down!" Undyne said as she was suddenly eclipsed in a bright light of red and white. J404!Butterfly covered his eyes from the blinding light. This light didn't just cover over reality, but it covered over this reality's past, its present and all futures. A blanket of hope for the innocent dreams of all!

Undyne is filled with HOPE

J404!Butterfly looked ahead once it deemed, and would see not an equal, but a mountain to conquer.

The Angel of Hopes and Dreams is here, Undyne the Eternal

"You're gonna have to try a little harder than THAT." Undyne the Eternal said.

"Oh shit..." 404 said in J404 Butterfly's head. 

"A little revive and a new look isn't going to save you Undyne, prepare to-" however thats when J404!Butterfly would get punched straight in the mouth so hard his head would go swirling around his neck till it popped off. Undyne the Eternal would then summon her master spear and stab his body eviscerating it. 

Maleware would fill a large piece of himself go missing, like as if it was eradicated from existence itself. "She-She destroyed a piece of me, perfectly! How did she get such a ability? How is that possible even?!" J404!Butterfly thought as he then reconstructed himself. This time taking a little longer than usual thanks to the last attack.

"This isn't good. If I'm hit with that spear, this battle really will be over. I can't let this turn into an endurance battle otherwise I'll lose. Ok, time to think." J404!Butterfly said, but thats when Undyne the Eternal would once again summon a volley of spears, this time being triple the amount than before.

"Try this on for size." she said as she snapped her fingers. "Fuck, I hate this move" J404!Butterfly said as he began to fire in every direction imaginable to destroy as many spears as he could. However it was pointless, spears came from every angle imaginable and unimaginable, they broke through barriers that weren't even thought to exists. 

"Maleware! I think I know how we can beat her!" 404 said

"UNLESS you can tell me in the literal next few seconds, THEN SHUT THE HELL UP!" J404!Butterfly said as continued to destroy more and more spears, he'd then begin to spin rapidly and blast his way through and upwards. Undyne would summon one red spear in front of her, before then jumping on its tip and extending high into the air so that she could follow him.

"Look I don't know exactly how you work an all, but something is telling me that you and the code we're made from doesn't mix. Lets use that, lets try that and see if that works!" 404 said

"Interesting idea, alright then. Lets see just how eternal she really is...only problem with that idea thought Will." J404!Butterfly said "What?" 404 asked.

"I'm going to have to get in close." J404!Butterfly said as he saw Undyne the eternal rising towards him. J404!Butterfly cracked his neck and then curved his movement back towards Undyne. She grinned as she got her master spear ready. However it wasn't her J404!Butterfly was aiming for, and he'd take out the spear she was ascending on, he'd then use on of his wings to slap her across the multiverse. J404!Butterfly would land only to be bombarded with more spears, he'd be stabbed nearly a million times before he'd use his wings to break fear and blast holes in the massive volley. Undyne the Eternal would look forward before then pointing her spear ahead and towards J404!Butterfly, an action that would cause for hundreds upon hundreds of red spears to go flying towards him.

"Alright then!" He said as he then began to make a small Omninova, he'd then expand it and put himself inside which would stop the spears on impact. However this moment of calm wouldn't last long as just when he looked up he'd see Undyne the eternal jumping in front of it and kicking straight through drop kicking J404!Eternal out of the sphere and far into the distance, skidding and skipping along the ground. As he stopped himself, he'd then move his head out of the way just in time to dodge Undyne's attack with her master spear. The two of them would begin to clash, with both of them punching at one another with enough force to nearly fracture reality itself. Undyne looked around in caution, but J404!Butterfly would use this to go for a axe kick only to have Undyne grab his leg and rip it clean off. She'd then destroy it with her master spear. 

"TCH! Damnit!" J404!Butterfly said, but just before he landed he'd be gut punched by Undyne the eternal causing him spew out a black liquid which would Undyne would block with her glove as J404!Butterfly was sent flying backwards.

"What? What the hell is this crap?" she thought, she gave it a quick whiff, but as she did she would suddenly begin to glitch and bug out. She'd drop to one knee and begin to groan and scream in pain. J404!Butterfly landed on all fours as he saw it. "YES! LETS DO THIS!" he shouted as he then threw a small Omninova right at Undyne the Eternal's face, but she would look up briefly and then cut it in two with her master spear. She would then collapse onto her knees.

"...Remarkable. You truly are a great warrior." J404!Butterfly said as he then summoned yet another small Omniova and threw it at Undyne the Eternal, except this time she couldn't block it. She smiled as she explosion went off destroying the entirety of the multiverse and sending her flying towards the depths of this reality. As she was falling she would slowly begin to get better and better, the glitching beginning to subside.

She would open her eyes wide as she then looked around at her surroundings and saw endless pipes and wires, she then turned around to see a bright light at the end. She would extend her master spear upwards and wait. Eventually she would arrive in this massive open land. Gigantic cubes and endless pillars of code would be all over the place. She looked around, but before she did, she'd save herself by pointing her spear downwards stopping her momentum. She looked around as she descending downwards via decreasing the length of her master spear.

"What in the world is this place?" She thought, however it began to shake violently, she then looked up to see none other than  J404!Butterfly flying down after her. He'd charge up hundreds of Omninovas and then send them flying towards Undyne the eternal who would simply send spears at each of them destorying them and the spears at the same time, causing massive explosions all around.

J404!Butterfly would finally enter into this space and fly around watching Undyne who stared at him.

"I need to get in close, if I maintain this distance she'll just her damn spears on me, and if that happens she may get a chance to use that weird spear on me. ALRIGHT THEN!!!" J404!Butterfly thought as he then blitzed towards Undyne, but would be stopped by a spear stabbing his leg stopping his motion just in time for Undyne to wind up a powerful punch to his temple. This would send him flying backwards and skidding across the ground. He'd shake his head as he then rushed towards her again, this time using his wings to dig through the ground fling it towards her. Undyne who swat some of the stones away, but this gave J404!Butterfly the chance to deliver her a kick to the chin, a few god killer rays to the face and finally firing a Omninova from his mouth and at her chest causing a massive explosion that would see her go flying. 

"Alright...I don't know how much more of this I can do. When the time is right. I'll change back into you, you take a piece of me and shove it right into her body. That'll end her for good." J404!Butterfly said telepathicaly. "Roger that." 404 replied. He'd see as Undyne the eternal got up once more. Spitting out a small wad of blood.

"All of my attack, and she spits out one wad of blood. If I was in my real body lady, this would be a match to remember." J404!Butterfly said as he then began to fly towards Undyne the eternal at insane speeds, with her also running towards him at the same amount. The two of them battling across this land with enough force to leave craters deeper than a galaxy and shockwaves that will linger for eons. Eventually during their clashes J404!Buttefly would land a hit on Undyne cracking her armor and leaving a hold in side. 

"GAH! ALRIGHT THEN PAL!!!" she shouted as she fired another volley of spears.

"OH SHIT! ITS NOW OR NEVER WILL!!!" J404!Butterfly shouted, cause he knew that if this didn't work. They were dead for good. J404!Butterfly began to fly towards Undyne the eternal with billions upon billions of spears stabbing and homing in on him, each one stabbing into his wings.

"CMON MALEWARE!!! PUSH ON!!! ALL THE WAY THROUGH!!!" 404 roared, 404 and Maleware roared a mighty roar as they got close and close towards Undyne the eternal.

She would spin her master spear and would point towards sending another volley of spears right at them straight ahead. "...No-"

 The spears would stab against J404!Butterfly turning him into a big pin cushion once it was all said and done. Undyne began to walk towards J404!Butterfly, master spear in hand. J404!Butterfly began to dissolve in front of her leaving only 404 now.

"I can see your transformation has ended, that's unfortunate. You were a great fight...but fights have to end at some point. 

This will just have to be yours." She said as she then grabbed her 404 by his neck and ripped him out of the sea of spears, the only thing remaining of him being his head and mangled spin. "...I'll see to it that this isn't painful for you. Its more than you deserve, but...in some alternate world...you'd do the same for me. 

...is that crazy to say? I don't know. Heh, I guess...don't tell any other Undynes that. Goodbye." she said as she then pulled her arm back, Master spear in hand and would-

WHAM!

Suddenly she'd feel a sharp pain in her side and would look down to see some strange black goop shoved into her open wound. That is when she would begin once again to violently glitch out dropping 404 on the ground. She would begin to scream and groan as pain coursed through her every body part. 

"I-I-I-I.....WUAHHHHHHH!!!" she screamed as Undyne the eternal would then be pulled apart and into nothingness. 404 watched as it happened, slowly regenerating himself. Once it was done he'd get up slowly and in mountains of pain that he couldn't heal from.

"...ugh...damn it all...that hurt. I think after this I'd like for a nice vacation out in some woods or something." 404 said. He'd scratch his head as he then looked around the place. 

"Woah? what is this place?" 404 said

"This is the Storage Room." said a voice behind 404 startling him, but it would be revealed to be Loading. "Gah! Dude don't do that." 404 said.

"..."

"...Storage room? 404 said "Yes, it is where all unused code, yet to be used and removed code is stored. Things like structures never meant to be, NPCs that didn't need to exists and so on. Fitting for you isn't it." Loading said a 404 walked around with a hobble as he looked around.

"Ha ha...so fucking funny I forgot to laugh." 404 said. The two stood in silence for a moment before 404 turned to him. "I thought you wanted to kill me?" 404 asked.

"I do, but the one known as Code!Gaster has tampered with things beyond his feeble comprehension and it just so happens that you are on your way to end him. Hence, I'm not killing you...not today." Loading answered.

"I'm not your janitor." 404 said

"No William, that would imply this is my mess. When we both know that anything happening in this reality is either your fault or related to you." Loading said, 404 just looked at Loading before then looking up. "Any chance I can get out the way I came in?" 404 asked.

"No. Once you pass through the gateway, all things are locked within here. Unless you have Developer Permissions over the backrooms you can access to get back." Loading said.

"And I'm guessing you do?" 404 asked. "Obviously." Loading answered as he then extended his hand. 404 would take it.

"By the way, quite Ingenius of you to use a different source to defeat her. Brilliant maybe." Loading said.

"Another what?" 404 asked

"Nothing." Loading said as he and 404 would then be transported back to the inside of Calculated Heaven. 404 would look over to see Code!Gaster laying on the floor, clearly exhausted and drained nearly of all life. Fun!Frisk was simply playing in the old man's chair. She'd see 404 and grow a wide smile and wave at him. 404 would give a small wave, he'd look back to Loading only to see he wasn't there.

404 turned his head towards Code!Gaster and began to walk towards him.

"Oh....its you....well....this wasn't how things were supposed to go." Code!Gaster said as he struggled to turn himself over, 404 simply watched him as he eventually did.

"..."

"...I...I just....wanted a place for my son....to live...peacefully....but I realize now, thats impossible...so long...as...as you live." Code!Gaster said. 404 continued to stare at him.

"...Listen to me....boy....you don't understand a thing about it....about what it means to truly love somone.....everyone hated you...and now...you plan to spread that hate everywhere....because of what?

Because your lonely.....your such a child William.....but I suppouse...when its all said and done...you'll finally not be so alone....only question is though...when this world finally looks and acts like yours.....will you destroy it too?" Code!Gaster said, Fun!Frisk looked from Code!Gaster to 404, yet she couldn't quite make out what his expression was.

404 then got ready to raise his hand to summon his blaster-

"No....no...kill me...with you little beam...do....do it that way." Code!Gaster said

"..."

"Because....I know you got to do it twice.....once for me....the second....for my dream." He said, 404 didn't say anything once again put his hand down and pointed his finger at him.

"..."

bang

"..."
...bang

404 just stared at the body of Code!Gaster as he put his hand down. Fun!Frisk then walked over to him, as she did Calculated Heaven would begin to fall apart and crumble. "Hey...you alright?" Fun!Frisk asked to which 404 would then take a breath before turning away from Code!Gaster...but he'd look back one last time before looking away.

"...No." 404 answered.

====End===

.

.

.

====Bonus Scene===

Back in the Basement of reality would be a small group of individuals. There would be Mr.UnderTale and Holiday. As he walked around Holiday would speak with a few of the well suited individuals.

Mr.UnderTale would scratch the bottom of his jaw.

"What a magnificent specimen you are." Mr.UnderTale said as he then reached out and pulled out the non-existent essence of Undyne the eternal. 

"You have me very happy. So...I shall reward. How about...a new place to spawn huh? Hehehe, I think thats very nice indeed." He said as he then placed her essence inside of a small black box, right next to a police badge.

"Sir' CEO wants to talk on the boy." Holiday said "Ugh, always with the semantics. Never about the fun. Its like I'm running this show by myself or something." Mr.UnderTale said.

"MR.T!" shouted a female voice.

"Alright Theresa! Mrs.Bossy is more like it." Mr.UnderTale said as he then walked away and rejoined the group.