3rd POV
It has been six months since the monsters have returned to the surface when they made there first appearance to the humans, they were at first weirded out, scared or afraid, and curious when the humans saw the monsters, but slowly the humans have been accepting more and more of the monsters, to a point of peace to the two races... We then hear a voice grunting, and then a light appears, as it turns out it was undyne struggling putting in the VHS tape for an anime
A few moments later
After one of the anime characters said "special attack" frisk got them thinking
Frisk: Hey, Papyrus?
Papyrus: HMM?
Frisk: You never did show me your special attack...
He realizes that he did in fact never showed frisk his special attack
Papyrus: OHO! THAT'S RIGHT!!! THAT PESKY DOG GOT IN THE WAY ANYTIME I TRIED... BUT THE PEST HAS LET ME BE FOR SOME TIME NOW!
Undyne: shh, Papyrus! You're gonna miss the best part!
Papyrus: OH, SORRY
A few moments later...
After the anime ended undyne turns to papyrus
Undyne: So that's it for the season... But the next one comes out in a few weeks, and Alphys and me are gonna have a little party. And you guys are TOTALLY invited of course
Frisk: Sounds great! I definitely liked how none of the monsters were really evil
Undyne: We KNEW you would*laughs*'Uh, so did we, fuhuhuhu!' Anyway, I'm curious what were you and Papyrus talking about earlier?
Frisk: Oh! When everyone used there special attack, it reminded me I never saw Papyrus use his, I forgot all about it until just now
Undyne: Huh, really? He's super proud of it, I can't believe you missed out. If that's
The case though... I know IM still pumped from watching awesome magic fights, and there's only ONE way to fix this.
Undyne stands up yoinks frisk by the head and ran
Undyne: You've GOTTA see this punk!!! C'mon Papyrus, let's do this!!!
They then ran out of the house
Papyrus: WELL, THIS IS A THING ARE YOU COMING?
Sans: I am getting up as we speak
Papyrus glares at sans
Papyrus: YOU'RE NOT MOVING AT ALL!!! UGH! FINE BE THAT WAY I'LL BE OUTSIDE!!!
He walks away, and Sans then teleports to papyrus
Sans: nah, you know I'd never miss you out on you being cool. I wonder how the kid will react. Bet it will be hilarious
They then walk outside and close the door, they then see undyne and frisk waiting for them
Undyne: Okay! Since Toriel would kill us if we hurt frisk, I'll be you opponent!
???: So... What's happening here?
They all turn to the source and they see Y/N
Undyne: Oh! Y/N, you're here! Have you ever seen Papyrus's special attack?
Y/N: can't say I did
Undyne: Great! Now, just like old times, huh?
Papyrus: INDEED THOUGH MOSTLY WE COOKED
Undyne: Cooking, fighting, SAVING THE WORLD- ITS ALL THE SAME!! YOU GIVE IT YOUR ALL OR IT DOESN'T MATTER!!! Now... SHOW ME WHAT YOU'RE MADE OF!!!
Frisk:*jokes* Wouldn't that be bones?
Sans chuckled at the joke, so did Y/N
Undyne then fires her spears and papyrus blocks them, he blocks more spears with his bones, and Undyne dodges the row of bones that papyrus sent with the blue heart, she summons more spears and he summons more bones, he blocks the spears and Undyne freezes when she got hit by blue bones, undyne makes a rain of spears and he blocks them using more bones, papyrus sends a row of bones and Undyne uses them as stairs, she then summons a spear in her hand and charges it to papyrus and he responded by blocking the spear that she was holding, frisk was amazed at their fight so does Y/N and sans smile widens.
Sans: my bro really is cool, huh? Undyne's strong, but papyrus has her beat when it comes to control
Undyne then rains down her spears
Undyne: NNNGGAAAAAHH!
And papyrus blocks them using a bone in his hand
Sans: he's giving her a real run for her money, too... So cool
He then throws away his bone
Papyrus: NOW! INSPIRED BY THE SPIRIT OF COOL ANIME AND MY INHERENT GREATNESS, I! THE GREAT PAPYRUS!! GIVE YOU!!!
He then summons a dragon like skull
Papyrus: MY SPECIAL ATTACK!!!
Just then the flying dragon like skull started to grow a neck, spine, ribs, legs, wings, and long tail... Undyne was shocked at this new special attack, and it starts to prepare an attack, and just before it fires papyrus went in and interrupted it
Papyrus: NOOOOOOOOOO!
He then starts to lecture the bone dragon, as frisk, sans, Undyne and Y/N stands there in surprise, astonishment, and confusion, after a few minutes of papyrus lecturing a dragon he finally stops
Papyrus:-AND STAY DOWN!
He ends with the wide eyed dragon crouching down
Undyne: WHAT THE HECK?! You've never done this before?
Frisk:, I don't get it, is it not supposed to be like that?
They asked Y/N and he just shrugs
Y/N: yeah, is it not supposed to be like that?
Papyrus: UGH! NO!! ITS ONLY SUPPOSED TO BE A COOL SKULL... BUT FOR SOME REASON ITS THIS ...
Frisk then thinks for a moment, and realizes the cause
Frisk: I've got it! Papyrus, you really were inspired by anime you summoned a spirit like Minako!
Papyrus groans in annoyance And undyne laughs loudly
Undyne: *laughs loudly* oh my GOD! That TOTALLY EXPLAINS IT!!
Papyrus: I SUPPOSE I DID SAY AS MUCH... I DIDN'T EXPECT TO HAVE ANY REAL EFFECT, BUT HERE WE ARE. ALRIGHT YOU'VE DO WELL ENOUGH YOU MAY GO
The dragons looks around a slight bit, before it stands up and goes to a very confused Y/N and lays down behind him
Y/N: Eh?
Papyrus: I SAID YOU MAY GO, NOT GO TO HIM, WELL OFF WITH YOU SHOO!!!
The dragon doesn't go anywhere but keeps laying down behind Y/N, and whines loudly which made Y/N feel bad about it so did everyone present
Undyne: Aw, I think it wants to stay... Did you call it anything besides a special attack?
Papyrus: I NEVER NEEDED TO...? ITS JUST MY SPECIAL ATTACK. ITS NOT NORMALLY THIS STUBBORN, AND IT NEVER TOOK A LIKING TO ANYONE
The all turn where the dragon was and it picked up a still very confused Y/N by the neck, which made him go limp and placed him where it's front legs are ( Y/N is 4'9 in this it was because he was getting tired of having to duck down so he can enter a door)
Frisk: it also doesn't normally have a body and personality, maybe you put too much effort into it
Papyrus: BUT OF COURSE! I ALWAYS GIVE IT MY ALL! BUT I DIDN'T KNOW I HAD MORE OF MY ALL TO GIVE ALL ALONG!!! INCREDIBLE WHAT NEW HEIGHTS WILL THE GREAT PAPYRUS REACH NEXT?
Sans: can we keep it bro? You always wanted a puppy
Papyrus: I'VE HAD ENOUGH OF DOGS SINCE THEN, THANK YOU BUT IT SEEMS WE HAVE NO CHOICE...
Frisk: can I pet it?
Papyrus: I DON'T SEE WHY NOT! SINCE IT ALREADY TOOK A LIKING TO Y/N
Frisk then goes to the dragon where Y/N was stuck in it's front legs, the dragon then lays it's head down and sends out a breath which ruffles frisks hair and they then pets it and it seems to enjoy the petting
Undyne: Hey punk! Move over! I'm getting on this too!!!
A few moments later...
We then hear muffled screams of help as the dragon squishes Y/N, and it enjoys the pets and scratches
Sans: aw, it really likes em
Y/N finally got out, and walks to sans and papyrus and grew to 7'9
Y/N: well that was an experience
Papyrus: OF COURSE IT WOULD BE AN EXPERIENCE BUT AS I WAS SAYING, OF COURSE! THOUGH I ADMIT I HAD NO IDEA IT COULD BE SO... AMICABLE. ARE BOTH OF YOURS EVER LIKE THIS SANS? Y/N?
Both frisk and Undyne look at Y/N and sans
Sans: heh, nah you know I don't have anything as cool as your special attack, laser skulls are way too much effort for me, laser dragons? Totally out of the question
Both of them then look at Y/N
Y/N: dunno... Don't think I can do it, it's either I don't have enough magic or it's too much for me
Papyrus: OF COURSE BROTHER, Y/N, I DON'T KNOW WHY I THOUGHT ANYTHING ELSE! HOW SILLY OF ME! AS WELL AS HE IS PROBABLY RIGHT ABOUT NOT HAVING ENOUGH MAGIC, OR BEING IT TOO MUCH
Undyne was getting suspicious of both of them
Undyne: No, hold on, don't cover for both of them, if sans and maybe Y/N has this kind of thing too, I wanna see it. But Y/N first
Y/N: uhh, undyne? Don't you already know what happened last time we did this?
Undyne: I do, but... I still want to see it!
Papyrus: YOU HEARD THEM, SANS IS FAR TOO LAZY FOR SUCH FEATS, AND Y/N MIGHT NOT HAVE ENOUGH MAGIC,
IM SURE ID THEY JUST PRACTICED HE COULD APPROACH MY LEVELS OF COOL AS WELL! THOUGH I DO AGREE, THE CHANCES ARE QUITE SLIM
Frisk then goes in deep thought
Frisk: ' I fought almost everyone except sans and Y/N... So I never got to see there magic besides Y/N, either... I expected to fight sans in the last corridor but he only judged me, he also said that Y/N was supposed to be the one that judged me but got sick after our fight with Mettaton... And for some reason, both of them really doesn't want to fight at all... But maybe if I ask very nicely...'
Frisk: Sans, Y/N! I really, really want to see your special attack! Pleeeease?
Sans: heh, sorry to disappoint, kiddo, but i really don't have anything like that, but hey I'll throw you a bone, here catch
He then fires a bone at frisk, which immediately turns to dust at contact, they then turn to Y/N and he just shrugs
Sans: see? I can't hold a candle to my bro, so there's no point in dragon this out any longer
Papyrus groans in annoyance so does the dragon
Undyne: SANS, Y/N. Did both of you really think... You both can hide this from us?
Sans/Y/N: not hiding anything if there's nothing to hide
Frisk: You liars! Both of you guys are the ones with secret rooms and secret codewords and-
A spear then separates them
Undyne: I'm SICK of you kids messing around! Sans, Y/N, what are you two, five!?
Sans/Y/N: yes/no
Papyrus: SANS IS LIKE, TWENTY SEVEN OR SOMETHING, AND Y/N... I DON'T REMEMBER, ACTUALLY Y/N? HOW OLD ARE YOU AGAIN?
Y/N: 18 why?
Undyne: oh my god, that's worse
Papyrus: I KNOW
Undyne: Fine, fine. Guess I've got no choice, if sans and Y/N won't show there stuff on there on... I'll make them. But Y/N first
Y/N: wha?
His soul then appears... It's still the same
Undyne: you know Y/N, I still can't rap my head around your soul
Sans: go easy on him, not everyone is as tough as my bro
Undyne: Please. You know I don't go easy on ANYONE! ESPECIALLY not a slacker like YOU!
She then turns to Y/N and fires a dozen spears at him, and he retaliates by using his green shield, more and more spears come at him and he blocks all of them, there are times when he wanted to move and dodge but can't due to the green magic on his soul
Frisk: Seems like... Y/N wants to move, but can't, I don't blame him
Sans: that's right kiddo, he wants to but can't, it's because of the green soul magic on him
Frisk: I see...
After blocking a few more spears undyne then stops to speak
Undyne: Not bad! Better than I expected, anyway, Now... It's your turn! C'mon man!
Y/N: alright then... Here it goes...
Y/N gets in a stance that Frisk recognizes, he then starts to glow a bright shade of blue and a sound comes from him, he then fires the atomic breath

Undyne manages to dodge the attack, and when the attack was gone a large blue explosion came in to view, all of the people present were shocked even the dragon was rattling in fear, blue smoke comes out of his mouth
Y/N: ' well that ought to do it, I hope that convinces undyne that it was my special attack...'
Undyne:*shocked* well... Uhh... I guess that was what Alphys meant about your atomic breath being extremely destructive...
Y/N: 'OH, COME ON! SERIOUSLY!? I GUESS IT WAS A MISTAKE TO TELL ALPHYS THAT!'
Frisk:*shocked* that... Wasn't your special attack...?
Sans:*shocked* wow... Just wow... And that wasn't your strongest attack...
Papyrus: WOWIE...!
Undyne: Come one Y/N! Frisk, me, heck even Papyrus and Sans wants to see it! Come on Y/N, just show your special attack! Is this REALLY so hard to do for your FRIENDS?!
Y/N:*sighs* fine... But you better be ready
He then makes undyne's soul turn blue, much to everyone's surprise, and he sets it 2x the Earth's gravity, which made undyne slower, he then summons rows of spikes and it nearly hits her
Undyne:*laughs* now THAT'S more like it! Then I will make this quick
She then fires a spear at him and he uses a small shield and it cracks
Y/N: *surprised* ...you weren't kidding... dodge this and I WILL show you my special attack
He then sets the Earth's gravity to 10x, undyne fell down due to the pressure, Y/N then summons a small spike and it hits her
Y/N: welp you couldn't dodge it so I CAN'T show you my special attack
He then sets the gravity to normal with a pissed off undyne getting up, she then yells in anger and summons too many spears for Y/N to block, and then...
*THUD*
Gaster:👎︎□︎■︎🕯︎⧫︎ ⬥︎□︎❒︎❒︎⍓︎ ✡︎📭︎☠︎📬︎📬︎📬︎ ✡︎□︎◆︎ ⬥︎♓︎●︎●︎ ♌︎♏︎ ♐︎♓︎■︎♏︎📬︎📬︎📬︎ ✌︎♐︎⧫︎♏︎❒︎ ♋︎●︎●︎ ⍓︎□︎◆︎ ♋︎❒︎♏︎ ♋︎ 👌︎⚐︎💧︎💧︎ 💣︎⚐︎☠︎💧︎❄︎☜︎☼︎ ♋︎♐︎⧫︎♏︎❒︎ ♋︎●︎●︎📬︎📬︎📬︎
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Author: and done! Also I won't translate wingdings for now because it can ruin a surprise, but that is all for this chapter and I will see you guys in the next chapter bye
Toby fox owns undertale
2528 words
Also this is inspired by "unexpected guests" comic made by undertalethingems