MK: Woah

Alphys: No, you're lying. It's not scientifically possible for humans to possess magic.

Frisk: I thought humans used magic to create the barrier?

Alphys: Yes, but they were said to die out centuries ago!

James: They didn't die out, just forced to live secrecy.

Alphys: I still don't believe it.

Sirius: Guess we'll have to prove it. *points wand at Sans* Levicorpus!

*Sans is hoisted up in the air by his foot by an invisible force*

Sans: Hey, put me down!

Sirius: Hmm...no I don't think I will.

Sans: What! Why?

Sirius: Because this is my revenge for the wedgie!

Sans: *eye glows blue* Put me down or you're gonna have a BAD TIME.

Peter: Padfoot, I think you should put him down.

Sirius: I don't think I-

*A Gaster Blaster appears, aiming at Sirius*

Sans: It's a beautiful day outside. Birds are singing, flowers are blooming. On days like this, kids like you... s h o u l d   b e   b u r n i n g   i n   h e l l.

Sirius: I'll put you down... *takes the spell off*

*Everyone is shocked. Frisk is astounded by the Marauders because they're actually wizards. The others are staring at Sans, whose eye has stopped glowing.*

Papyrus: Sans, what was that?

Sans: Wha...oh.

Frisk: Wait, you don't know about Gaster Blasters?

Papyrus: You do?

Sans: If everyone is quiet, I will explain. Back when we were still being created, our creator decided to do something to me and not Papyrus. He gave me DETERMINATION. It gave me these powers. I can teleport, as you already know, I have telekinesis, I have Gaster Blasters and timeline awa...and that's it. But it also had the side effect of giving me a low HP.

Papyrus: Why didn't you tell me?

Sans: I was afraid of two things. 1) You'd be jealous of my power and hate me or 2) You'd think I'm a freak.

Papyrus: I would never think of you as a freak! You're my brother!

Sans: You're not jealous either?

Papyrus: I am a tiny bit, but at least now I know I have a brother almost as great as me.

Sans: So you didn't think I was great before?

Papyrus: No what I meant was...er...someone help me out here.

James: You thought he was great before but now he's even more great?

Papyrus: Yes! Exactly! Thank you, James. I think you and I will be very good friends.

James: Cool.

Peter: Guys.

Sirius: Yeah, Wormtail?

Peter: It's 7 o'clock. People are going to start coming downstairs soon. What are we going to do?

James: I have an idea. *To the monsters* Just stand over here a sec.

*They stand where James told them*

James: I'm going to place a disillusionment charm on you. This will make you almost impossible to see.

Sirius: Prongs, where did you learn a disillusionment charm?

James: Moony.

Sirius: Oh.

*James placed the charm on the monsters. They disappear, blending in with the background*

James: Time for the next part of the plan. *Puts wand to his throat* Sonorus.

*He goes up to the bottom of the staircases leading to the dorms*

James: Will all of the Gryffindor students please come down to the common room as the absolutely amazing Marauders have something to show you!

*Yells of annoyance sound from upstairs. One is louder than the others*

Girl's voice: FUCK YOU, POTTER!

James: Seriously, Evans, this is a matter of great importance!

Girl's voice: GREAT IMPORTANCE, MY ASS!

James: I mean it, Evans! Just come down here and make sure all the other girls do, too!

Girl's voice: OH, FINE. BUT IF IT TURNS OUT YOU JUST WANT TO ANNOUNCE THAT YOU'VE PRANKED SEVERUS AGAIN THEN YOU'RE DEAD!

Sans: Who was that bundle of joy?

Sirius: Lily Evans, the girl James has been in love with since first year.

Sans: Ah, young love, so much swearing, yelling and hatred.

Frisk: *Giggles*

*People start coming downstairs. The monsters are silent*

Sirius: I'll go check all the boys are down here.

*Sirius goes upstairs as Lily comes down with Marlene McKinnon, Mary MacDonald, Alice Davis and Emmeline Vance.*

James: Are all the girls down?

Lily: Yes, they are, Potter, now this had better be good.

James: Trust me, it is.

*Sirius comes back down*

James: Is everyone down?

Sirius: Yep. All yours, Prongs.

James: *Addressing the crowd of Gryffindors* I'm sure you're all wondering why we asked you all down here. Well, we have some visitors here in Gryffindor Tower. Their appearances may shock or even scare you. We'd like you to meet Frisk, *takes charm off Frisk*

Frisk: Hi.

James: Sans,

*Gasps sound when  Sans is revealed*

Sans: Sup.

James: His brother, Papyrus,

Papyrus: Hello, humans!

James: Undyne,

*More gasps*

Undyne: Heya, punks.

James: Alphys,

Alphys: H-h-hello.

James: Mettaton,

MTT: Good morning, beauties and gentlebeauties!

*Whispers of "An actual robot!" are said by the muggle-borns*

James: His cousin, Napstablook.

Blooky: Hi..............

James: And Monster Kid.

MK: Yo!

James: So yeah, they're going to be staying here for... *turns to Frisk for her to answer*

Frisk: Uhh...we might be here for a while, actually...

Papyrus: Is there something you're not telling us, Frisk?

Frisk: I can't remember the way home.

Undyne: What?!

Frisk: I'm sorry!

Sans: But you've been here and back three time! How can you have forgotten?

Flowey: Uh, hello? You sort of forgot to reveal someone!

James: Oh, yeah. And this is Flowey.

Flowey: I will eat all of your souls!

Sirius: You might want to stay away from him.

Sans: Yeah, he's a complete bastard.

Flowey: Shut up, Smiley Trashbag!

James: Well, I think that's about it, so...yeah.

Sirius: You can all go back to what you were doing.

James: Oh, wait, one more thing. Don't tell anyone. Especially the teachers and the Slytherins. I'm speaking mostly to you, Evans.

*Lily rolls her eyes. The crowd disperses. Most begin heading heading out of the portrait hole, talking about the new visitors*

James: We have to go to the dorm and get dressed. We'll be down in a minute. Make yourselves comfy.

*They go upstairs to their dorm*

Sirius: So what do you both think?

James: Huh?

Sirius: Of those guys.

Peter: Well, they all seem good. Apart from Flowey. He freaks me out.

James: Yeah. Same.

Sirius: I don't really like Sans, either.

James: Why not?

Sirius: Do I really need to refresh your memory? He gave us wedgies, he didn't apologise and he used one of those...blasting things on me!

James: Gaster Blasters.

Sirius: Yeah!

Peter: To be honest, Padfoot, you did really piss him off.

Sirius: Yeah, but-

James: And he did warn you to put him down.

Sirius: But-

Peter: And it was kinda rude for you to use the spell on him in the first place.

James: And-

Sirius: Alright! I get it! I may have been too quick to judge. Can we just go to breakfast? I'm starving.

James: Okay.

*They go back down to the common room. Frisk, Sans and Papyrus are asleep on one of the sofas. Blooky is lead on the floor with his headphones on. Undyne, Alphys, MTT and MK are sat in armchairs*

Undyne: Hey, Papyrus, Sans, Frisk! James, Sirius and Peter are back down!

Sirius: Call us the Marauders.

Frisk: *Yawn* The Marauders?

James: It's the name of our group. We're notorious for pulling pranks around the school.

Peter: There are only four members. Us and our friend, Remus.

James: Well, we've got to go to breakfast. We'll get you something each from the kitchens. So we'd better find out what you want to eat.

Frisk: I'll have a bagel. No, wait, two bagels.

Sans: A bottle of ketchup for me.

Sirius: Just a bottle of ketchup? Nothing else?

Sans: Yep.

Sirius: Okay...

Papyrus: I'll have the best plate of spaghetti you can get!

Undyne: I'll have the same.

Alphys: I guess I'll have instant noodles.

MTT: I live off my own fabulousness! I don't need to eat, darlings.

MK: I'll have the same as Frisk.

Blooky: Unless you have ghost food, I can't eat anything.

Flowey: I'll have the souls of the innocent!

Sirius: So that's 4 bagels, a bottle of ketchup, 2 plates of spaghetti, instant noodles and water for Flowey as we are all out of souls.

Flowey: Well, why don't I have yours, then?

James: That's not gonna happen.

Sirius: We'll be back soon.

*They leave the common room. The go downstairs to the Great Hall. When they enter, all the Gryffindors turn to look at them. The other houses look scared because this makes them think they're about to pull a prank*

Sirius: Jeez, you'd think we'd murdered someone with everyone looking at us.

*They sit and load up their plates*

James: Got any ideas for pranks, Padfoot?

Sirius: I haven't really thought about it recently.

James: What about you, Wormtail?

*Peter shakes his head*

Sirius: I wonder is Moony has any ideas.

James: Oh shit.

Peter: What is it?

James: Remus. We got so caught up in the monster stuff, we forgot to visit him.

Sirius: Oh, he's gonna be pissed.

James: We'll visit him after giving the monsters their food.

*They eat breakfast and leave. The go to a corridor until they come to a portrait of a fruit bowl. They tickle the pear which turns into a door handle. They open the portrait*

Moppy the House Elf: Masters James, Sirius and Peter!

Sirius: Hey, Moppy.

Moppy: Where's Master Remus?

James: Hospital Wing, and you know you don't have to call us 'Masters'.

Moppy: Okay...James. What does sirs want?

Sirius: Here's a list.

Moppy: *Take list* Moppy will be right back!

*He runs off and comes back a few minutes later with a basket of food*

Moppy: Here you are.

Sirius: Thanks, Moppy. We'll see you later.

*They leave and return to the common room*

Sirius: Hey, we got you some food.

Sans: Good, I'm starving.

*They give everyone their food and Sirius almost drowns Flowey with Aguamenti*

Sans: This ketchup's pretty good. Not as good as Grillby's but still good.

Peter: Grillby's?

Papyrus: It's a bar Sans spends all his time at even though he should be working.

Sans: C'mon, Paps, you know I get a ton of work done. A skele-ton!

Papyrus: SANS!!!

James: Oh god. There's two of them.

Frisk: What do you mean?

Sirius: Our friend, Remus, may be the more studious one of our group but he's forever making puns, jokes and sarcastic comments. James hates it.

James: Sometimes, I find it relieving when he has to go because of full... I mean, because he has to go to the hospital wing.

Frisk: Why does he have to go to the hospital wing?

Peter: He has medication to take.

Sirius: Yeah, it always makes him drowsy so he has to stay there for most of the day.

James: Well, we have to go...

Undyne: Do you have to? There's nothing to do here.

James: Well, I - er - guess we could do something with you. We could teach you to play Wizard Chess or Exploding Snap.

Undyne: Exploding Snap? Sounds like fun.

James: I'll get my pack of cards.

Sirius: I'll get my chess set.

*They go upstairs, get their things and come back down*

Sirius: So, *sits and prepares chess board* Wizard Chess is similar to normal chess only there's a major difference. *To chess board* Pawn 2 to E2.

*The pawn moves forward 1 space*

James: And not only do the pieces move but also... Pawn 3 to D3.

*James's pawn moves and destroys Sirius's*

Undyne: My kind of chess.

James: And then there's Exploding Snap. It's the same as normal snap only the cards explode after a bit.

Sirius: Or we could play a different game...

Peter: What are you implying, Padfoot?

Sirius: Four words: Strip Truth or Dare.

A/N
Second chapter is finished. The next one will be very interesting, I can guarantee. It's safe to say this is where the content will become a bit more...mature. No lemony stuff, though. I don't read or write lemons and never will.
Sorry for posting this a day late. I'll try to be on time for the next chapter.
See ya!