When Two Worlds Collide

by Undertale MLP

Rating: everyone
Tags: Random, My Little Pony: Friendship is Magic, Main 6, Spike, Comedy, Starlight Glimmer, Crossover
Length: 1717

Monsters have been freed from the Underground, and Starlight has been reformed. Even though Discord isn't there, chaos ensues.

After the monsters have been freed from the Underground, they've been excited to explore the surface. However, no one expects what happens.

After Starlight has been reformed, she's been hanging out with the Mane 6. But Pinkie has been shaking, her Pinkie Sense telling her that something big is going to happen. But nopony expected monsters.

Undertale/MLP crossover. Pacifist Chara. No goat child (sorry). Mettaton is in this because we need fabulous robot. Papyrus can't handle anymore puns.

Published 2016-08-27 21:30:01 UTC
Last updated 2016-09-04 03:27:14 UTC

Here we go.

The monsters breathed in the fresh air that welcomed them. They watched as the sun slowly went down the sky, smiling the whole time. Chara seemed to be enjoying it most of all. She was back. She never thought she be happy to be on the surface, but surrounded by all these friends, she felt comfort. She turned to Frisk, her savior. Frisk was the one that convinced everyone to be friends with Chara, with the exception of Toriel and Asgore. They were happy to have her back. Papyrus didn't really need convincing, as halfway through Frisk's sentence he wrapped Chara in a giant hug. The rest (Mettaton, Alphys, Undyne, and Sans) needed more convincing, but over time, they accepted her. Now, they were here.

"EVERYONE!" Papyrus shouted enthusiastically. "LET'S GO MAKE A GOOD FIRST IMPRESSION!" He ran off to the nearest village. "Papyrus!" Everyone ran after him, laughing all the while.

Pinkie was bouncing all over the place. Normally, nobody would mind, it's just Pinkie Pie after all, but this time it was her Pinkie Sense. Everyone was running around, taking precautions.

"Uh, I don't understand, what's going on?" Starlight asked.

"Pinkie Sense." Everyone told her, some with more worry in their voices than others.

"This means that something big is going to happen." Pinkie stated as her voice shook with her body.

Starlight looked around at the ponies freaking out around her, and she soon joined them. Normally, she would stay calm, she didn't know these ponies that much after all, but she knew them enough to trust Pinkie. Listen, when your friend can break the laws of physics, the 4th wall, and everyone's minds, you listen to them.

"I'm getting something!" Pinkie shook even more quickly. "We're going to get more visitors..." She paused for dramatic effect. "And soon!" She exclaimed, startling everyone.

"Everypony!" Starlight announced. "Let's search outside! If these 'visitors' mean harm we can stop them before they cause any major damage."

Everyone agreed on that, each heading out the door.

The monsters (and two humans) ran with Papyrus, laughing and flailing about. They all stopped when they heard footsteps pounding on the ground. Sans pushed everyone back with his magic, knowing that something was about to go down. Chara and Frisk stepped forward though, joining him. The rest stayed behind, Alphys clinging to Undyne, Undyne getting in a battle stance, Papyrus clinging to Mettaton, Mettaton posing, and Asgore trying to cling onto Toriel, Toriel having none of it. Then they saw the ponies. They all relaxed, ponies were no threat to them. However, the ponies didn't feel the same way about the monsters. In fact, they felt the opposite. They tensed up, especially Twilight. 'Why are there two humans in this world? Why are they associating with monsters? Why are they here? How are they here? They don't seem to be from the Alternate Universe, so where did they all come from?' All these thoughts rushed through Twilight's mind as she noticed Pinkie had stopped shaking. "This is definitely it." She leaned back to her friends and whispered, sweating bullets. They nodded, ready to fight. Only Fluttershy and Starlight looked hesitant. The monsters quickly caught on to what was happening.

"You want a fight? Well, a fight is what you're gonna get!" The fish lady screamed.

"Oh yeah? We'll mop the floor with you!" A certain blue pegasus yelled back.

"Really? I've suplexed boulders 6 times the size of you, so try me!"

"Well, I can clear the sky in ten seconds flat!"

"That doesn't have anything to do with this!"

"WOULD EVERYPONY JUST SHUT UP?" Fluttershy yelled with surprising strength, making everyone freeze. Starlight tried to stifle a laugh, she was thinking of saying something herself.

"Yeah, why are you guys even arguing in the first place? None of the...monsters tried attacking us yet, except for her." Starlight gestured towards Undyne. "We should give them a chance."

Rainbow looked confused. Give MONSTERS a chance? "But they're-"

"Let me stop you right there." Starlight interrupted. "Remember everything I did? You guys forgave me. So far, these guys haven't done much of anything, yet you're ready to fight them. Just because they're monsters. So, let's all get to know each other first."

Everyone stared at her, both pony and monster. Starlight hoped she didn't say anything wrong. She was forgiven not that long ago, and she prayed she didn't mess up. She gulped. Then everyone started agreeing with her, even Undyne and Rainbow Dash. Both sides started talking to one another, Mettaton and Rarity discussed fashion, Sans and Pinkie exchanged puns, Twilight and Alphys went into a long conversation about anime, and Chara-

"Oof!" Starlight let out a gasp as she was was hugged by Chara.

"Thanks." The child smiled. "You mentioned something about 'everything you've done'. I've been there. So thanks. For understanding. And for bringing us together."

Starlight smiled. She did bring them together. With just a few sentences. But she wouldn't have said anything if Fluttershy hadn't. She gazed over at Fluttershy, who was having a nice conversation with Papyrus. Then someone else tackle/hugged Starlight. It was the other girl, one who had a striking resemblance to Chara.

"You made everyone really happy." She smiled (it's a smile fest at this point :pinkiecrazy: no, not that smile). "Thank you."

Starlight smiled in return (more smiling), and called out to Twilight. "Twi!" She started, confidence creeping into her voice. "Can we bring everyone to the castle and do introductions there? That way we can figure out more about everyone! Besides I don't think they have anywhere to stay!"

Twilight paused. While she just met the monsters, they probably didn't have a place to stay, and she wouldn't be the Princess of Friendship if she just left them. Also, she did want to know more about them...

"Alright everypony, er, monster, we're going to the castle." She announced.

They all headed to the castle together, monsters whispering that "CASTLES ARE ONE OF THE GREATEST STRUCTURES!" and "I'm sure they're fabulous, darling." AND "I-I hope w-we c-can watch M-Mew Mew Ki-Kissy Cutie to-together."

Then they arrived.

Author's Note

GUYS!!!!!! I did it! I finished the first chapter! I had the first two scenes mainly focused around Chara and Starlight, I felt the outcasts needed some more attention. The next chapter is going to be introductions, them getting to know each other better, then we get to the real fun part! You'll see what I mean :raritywink:

Oh, and Fluttershy was having a conversation with Papyrus because they're my two favorite characters :yay:

Also, I ship GlimmerShy. Don't judge me. That's Sans' job.

Enjoy the ride!

Introduction Time!

Twilight and her friends walked around the castle, the monsters looking around and blindly following. At one particular room, Twilight pushed open the door and smiled at the newcomers. She walked in followed by the ponies. The rest stood awkwardly by the doorway, not wanting to trespass in areas they didn't belong in.

"Don't worry, you can come in!" Starlight gestured at them. "It's a little intimidating at first, but once you're here more, it feels natural."

Soon, the room was filled. "Oh my, what fabulous decor!" Mettaton exclaimed.

"Of course it is! It's a castle, after all!" Rarity beamed proudly.

Quickly realising there was no place for the monsters to sit, Sans and Pinkie broke all physics (of course), and brought several chairs up. Looking around your house, you notice that chairs are missing.

Once everyone was seated, Twilight cleared her throat, bringing everyone's attention to her.

"So, first things first, how did you all get here?"

"Well, long story short, I fell down into the Underground, the land of the monsters." Frisk started. "They needed seven human souls in order to free them all. So, every human that fell down had to die."

The ponies flinched a bit at that part, but listened.

"Six human souls have already been collected, so Frisk was the last human they needed in order to be free." Chara added. "But no matter how many times they tried to kill her," Undyne looked away in shame at that part, "Frisk didn't fight back, and became friends with everyone. Through the power of DETERMINATION, Frisk set all the monsters free." Chara skipped over the part with Asriel. She didn't want to reopen old wounds.

Before Twilight could say anything, Pinkie butted in. "I think these guys are alright! I mean, sure, the monsters killed some people, but they have good character! You just don't know it yet because the author has only written the first chapter!" On that last sentence, she glared at the ceiling.

"Yeah, are you trying to make us monsters look bad? Not to mention that it's been almost two weeks since you've continued this story!" Sans added.

Twilight stared for a second, but shook her head. "Chara?"

"Yes?"

"You weren't mentioned in the story. You're a human, and you aren't Frisk, so how are you alive?" Twilight asked.

Chara froze. She didn't want to explain the whole thing to them. She didn't want to talk about it with ANYONE.

"It's kind of a personal story..." Chara gulped.

Twilight nodded. "Alright. You don't have to talk about it if you don't want to. I certainly don't want to pry."

Chara breathed a sigh of relief. "Thank you!"

"Okay everypony, let's discuss who's staying with who!" Pinkie Pie jumped up. "These guys don't have anywhere to stay, and our readers probably want to get right to the interesting part!"

So, Chara was staying with Starlight, Alphys was staying with Twilight, Papyrus and Sans were staying with Pinkie, Mettaton was staying with Rarity, Undyne was staying with Rainbow, Toriel and Frisk were staying with Fluttershy, and AppleJack let Asgore stay with her (as Toriel wouldn't let him stay with her and Frisk).

Author's Note

Pinkie, Sans, I would appreciate if you left the fourth wall alone. Thank you.

Sorry for the short chapter! But hopefully the next few make up for it! Also, Asgore's getting rejected. Again. :rainbowlaugh:

And now we get to the fun part of the story. Yay!

*You here something get broken in the distance, followed by a prominent, "Not again!"

Enjoy the ride!