Undertale Equestria

by pvzMLP

Rating: everyone
Tags: Adventure, Princess Celestia, Crossover, Human, Main 6, Princess Luna, My Little Pony: Friendship is Magic, Comedy, Other, Starlight Glimmer
Length: 3447

Frisk and her friends have finnaly escaped from the underground, but they didn't end up on earth they found themselves.....heh, you get the idea.

Frisk and her friends have finnaly escaped the Underground, but they didn't walk out onto earth. They......heh, you get the idea.

*Crossover with Undertale and takes place after True Pacifist ending.
Takes place after Mlp season 5 finale*

Published 2016-02-09 21:40:03 UTC
Last updated 2016-04-16 01:21:54 UTC

Prologue

Frisk covered her eyes as she hasn't seen the sunlight in days. Her friends on the other hand were having an even more difficult time since they've never seen it, except for Papyrus and Sans since they have no eyes.

Papyrus looked at the setting sun in wonder. "Wow. Hey Frisk what is that-" He stopped mid sentence as his eyes widened at Frisk.

Sans looked at him confused before turning his head and he looked shocked for the first time. "Well, that's never happened. Wait a second. Oh, well that makes sense." He said before turning to look at the sky and winked.

Toriel gasped in shock behind Frisk. As she turned to see what Toriel seemed so suprised about. And then fell face first into the grassy hill. She tried to push herself up, but she looked at her hands to see......she had no hands.

Frisk started to hyperventilate. Closing her eyes she hoped it was just her eyes playing tricks on her, but alas she looked down to see hooves.

Undyne and Alpys looked at her with stupified expressions while Asgore simply looked shocked. She tried to stand again, but simply back down. Toriel rushed to her side and embraced her as she started crying out in fear.

Undyne looked at Alpys. "How-why is she a...whatever she is?"

Alphys looked down at her sheet of notes she pulled out her lab coat. She kept flipping through them hoping to find something on this, but she found nothing. She looked at Undyne scared. "I don't know."

Sans walked up to Toriel. Putting a bony hand on her shoulder she turned to look at him Frisk still crying into her robe. He motioned to her to with his head for her leave. Reluctantly she let go of Frisk, but not before giving her a kiss on the cheek. Frisk looked up, tears still seen on her face and at the edge of her vision.

Sans smiled down at her. "Hey kid, don't cry okay? This is nothing compared to what you've been through before. You've befriended every monster in the underground even though they fought you. This? This is a walk in the park. Just STAY DETERMINED."

Frisk smiled. Wiping away the tears with a hoof she unseteadily got to her hooves. Wobbling she started walking forward with an awkward gait, but she still managed to stay up. Her friends looked at her with a smile as she walked around in circle adjusting to her new body.

Asgore looked at her with a smile. "Well now that that's taken care of why don't we explore this strange new world?" He said.

Everyone looked eager and Frisked noticed a village in the distance as did Papyrus. "Aha! A vilage! I the great Papyrus will go and make a good first impression." He said as he ran down the hill. At that everyone's eyes lit up in fear as they started chasing after him, while Sans walked the other way.

"PAPYRUS WAIT!" They all shouted as they chased him.

******************************************
Ponyville. Library/Castle

Twilight and her friends were having a fun get together in the dining hall with Starlight, who recently bought a house in Ponyville.
Starlight felt quite happy to have such friends care about her and welcome her with open hooves, even when she tried to destroy the timeline. She never thought she could meet such nice and forgiving ponies.

They were enjoying some salads and orange slices along with some hay fries. Pinkie Pie suddenly had a chill go from her tail up to her head and let out a cold breath. Rainbow looked at her shocked.

"What the hay was that?" She said looking around the dining room to make sure nothing dangerous was going to pop out of nowhere.

Pinkie raised her head to look at her friends and giggled. "Oh it's nothing bad sillies. Its just that's my Pinkie sense telling me that we're in a fanmade crossover story." She said munching on her hay fries.

Applejack raised one eyebrow. Twilight rolled her eyes in amusement. Rainbow grumbled about it looking like a real emergency. Fluttershy went back to chewing her salad. Rarity snickerd in amusement.

"Oh Pinkie Pie. When will we ever understand you." She then smiled as Spike brought her a bowl of grapes.

Starlight looked on in confusion before shaking her head and levitating her orange slice into her mouth. 'Just an average day in Ponyville I guess.' She thought to herself.

Just as she was about to take another bite of her orange she saw something tall in running down the hill toward Ponyville.

"Uh girls?" Starlight said. "I think the town is being attacked again."

They sighed. "What is it this time?" Rainbow asked absent-mindedly.

"It looks like a....bipedal skeleton?"

***************************************
Canterlot Castle. Throne room.

Celestia was going through the final taxes and law requests. She turned her head to look at the clock. It read 7:00. She smiled and set the papers to the table next to the throne. She got up and headed to the balcony behind the throne.

She smiled as she saw her sister waiting for her. Luna trotted up to her and they both embraced themselves. Luna then noticed the bags under her sisters eyes.

"Long day sister?" She asked with amusement in her voice.

Celestia looked at her grumpily. "You better believe it. Blueblood came here complaining about how the maids forgot to set his food at his breakfast and demanded they be fired because of it. And that was half the day." She told her sister.

Luna glared as she spoke next. "I still can't believe that he hasn't been attacked by them yet, because I would gladly do it for them. It's hard to believe he's our relative." She said with malice in her voice at the thought of the arrogant pony who used his royal status for his own personal gain.

Celestia sighed and embraced her sister once again. "Well we just have to put up with him Lulu." She told her. "Now come, let us set the sun and raise the moon." She said as she walked towards the railing.

But a sudden burst of energy coming from Ponyville distracted them. "Tia, what was that?" Luna asked her sister.

"I don't know Luna," She said. "But I think we should head to Ponyville."

Author's Note

I personally loved Undertale so here we are! Let me know if there's any spelling errors and he sure to fix it. So Stay Determined!

Chapter 1

Author's Note

The sight of a new chapter fills you with DETERMINATION.

Chapter 1

As Papyrus was running towards the village he suddenly noticed some sort of crystal castle in the distance. It was strange that he didn't notice it earlier. He shook that thought away and focused on the village coming to view. Only...he slowed down as he got a closer look at it.

It had plenty of residents, but they were all.....whatever Frisk was. He then came to a stop near a house that was sitting at the edge of town. He got up against the wall and looked around the corner. There were so many of these thing just roaming around interacting like humans and monsters.

He then heard some footsteps behind him and turned to see his friends running towards him. As they approached Sans came around the corner from the other side of the building.

Undyne then smacked him across his head knocking him down.

"Are you crazy?!!? We don't need to scare their souls out their body with this abrupt appearance!" She yelled at him at as he was rubbing the back of his head.

Asgore spoke up. "I agree with Undyne. We should all walk into town together and demand an audience with the town's mayor."

Papyrus rubbed the back of his skull. "Well....see....about that." He tried to get the words out.

Sans looked at him nervously. "Papyrus, what did you do?" He said in a worried voice.

"I didn't do anything! I was going to introduce myself to the townsfolk, but uh. They are all...whatever Frisk is." He told nervously.

"What!?!" They all shouted.

Asgore let out a deep breath. "Well the plan still stands. We go into town, introduce ourselves in a nice calm fasion and everything will be-"

"AAAAHHHH. MONSTERS!!!"

"-Okay." He finished to see a white 'pony' -as Frisk called them- with a rose red mane run into town screaming her head off.

Frisk face-hoofed.

*****************************************
Starlight and friends

As they were leaving the castle to investigate what Starlight told them they heard a scream come from somewhere in town.

"AAAAAAAAHHHHHH. MONSTERS!"

At that they started galloping to where they heard the scream and ran into Roseluck who looked like she went to tartarus and back.

"Rose! What happened!?!" Twilight asked her, her hooves on her shoulders.

"Goat-giant lizard-skeleton-fish-pony!" She gasped before fainting.

They looked at each other and nodded determined grins on their faces. They kept galloping down the road leaving Rose with Daisy and Lily who were nearby.

As they rounded another corner they saw what Rose saw. Two giant goat like creatures both wearing some kind of robe, a blue fish with an eyepatch and a red haired ponytail, a tall skeleton wearing some kind of costume, a yellow lizard with a lab coat and glasses, a short skeleton wearing a blue hoody and finnaly a pony with a yellow-orangeish coat with a brown mane a blue shirt with purple stripes and a cutie Mark of a heart.

They all just stared at each other, until the skeleton with a blue hoody walked up.

He reached out his hand. "Heya, the names Sans. And you are?" He asked.

Then Fluttershy and Rarity fainted.

Rainbow then face-hoofed.

"Was it something I said?"

Chapter 2

Something has gone wrong. We don't seem to have an archived copy of that chapter.

Chapter 3

Twilight turned to Fluttershy. "Hmm? Oh, that was just an experiment I was doing."

At the sound of that all the monsters and Frisk let out a sigh of relief.

Fluttershy shook her head. "No. The one in the corner that seems to be moving."

The monsters and Frisk then all took cover behind the couch while the ponies looked at them confused.

Just then a high pitched voice cut through the air. "Well now that's just plain rude."

The mane six turned to see the flower in the corner was frowning.

Rarity fainted and Fluttershy hid in a nearby plant.

" Hmp. Talk about being judgmental." The flower said while crossing its leaves and glaring at the ponies.

Twilight found the sight adorable, but when she turned to look at the others she noticed that Rainbow was shaking visibly.

"Uhh, Rainbow are you okay?" Twilight asked concerned.

Rainbow just replied. "No. A TALKING FLOWER IS ONE OF MY NIGHTMARES!!" She screamed flying out the window.

Everyone just blinked at that before Sans and Pinkie burst out into laughter.

Author's Note

This wasn't meant to be such a short chapter its meant to be a troll chapter.

But don't worry it's still relative to the story.

Chapter 6

Sans more or less told the equines everything....except the genocide this child DIDN'T mean to do. To say they were horrified was an "Understatement". They all looked nervous, terrified, sad, happy, and angry at this entire story.

"And then when we exited the Underworld we found ourselves in this world. And there you go, our entire life story, maybe, kinda. I don't know." He finished with a simple shrug. At first the ponies didn't say anything and it appeared that Fluttershy was hiding behind the couch on her friends side.

Princess Celestia finnaly broke out her shock-maybe for the last time?-and looked at Asgore with a glare. "While what happened in the past cannot be undone you should most definitely NOT attempt anything like that in Equestria while you are here. Got it?" Celestia didn't care how rude she sounded to them, but she did not want any of her ponies to suffer harm from them.

Asgore bowed his head to her. "I promise you Princess Celestia that we will not commit any harm to your ponies, but only in self defense." Asgore told her a solemn expression on his face.

Celestia then nodded and turned to her sister only to see her looking slightly troubled. Celestia knew that Luna was thinking about the child Frisk, but how could she not? This one pon-human had brought peace to these monsters war against humans and break a magical barrier spell that trapped the monsters underground for centuries. Yet, she felt like Sans and Frisk were hiding something from her.

"Luna?" She asked her gently. She looked up at her sister and cleared her throat.

"I also agree to these terms. It is only fair that you can act in self defense and only self defense." She told a firm note in her voice.

Asgore smiled happily before he realized something. "We're going to need a place to stay while we're here as well." He told them a "sheepish" smile on his face.

Pinkie then suddenly blinded forward. "Oh, I know I know! We'll all live together as roommates! Besides it's obvious that's what's going to happen!" She told a happy grin on her face.

Luna, Celestia and Asgore all blinked in suprise at the obvious answer.

"But who'll be staying with who? I mean I live in a cloud house so I'm out of the picture." Rainbow told them.

Twilight then decided on a method she learned from-you guessed it-a book. "Well why don't we talk about our likes and dislikes and we'll see who fits in with who." Twilight told them with an eager grin on her face.

************************************************************************************************************
20 minutes later

Celestia nodded happily. "So Asgore will staying in the palace to work on some treaties and learn the ways of this world. And try to find a way back to their world."

Pinkie then stepped forward. "Sans will be staying with because we both like jokes and pranking other ponies! And so will Papyrus because they're both brothers!" She smiled goofily.

Twilight then nodded. "Alphys will be staying with me so we can both learn all about each others world!" She exclaimed gleefully.

Applejack tipped her hat. "Undyne here'll help us out around the farm with brute strength of hers to help us."

Fluttershy then scuffed her hoof on the floor. "Um Toriel will be staying with me because she loves to help others and wants to learn about the animals. Frisk will also be staying with me because um Toriel is her mother and it would be wrong to separate them."

All eyes then turned to Flowey and Rarity. Flowey then sighed. "I'll be fine on my own thank you. Since I'm a flower I only need sunlight and water to keep me going."

Rarity then sighed. "I wouldn't mind having another around to help, but with Sweetie Belle I think I don't need anypony else to live with."

Luna then nodded and smiled. "Then it is decided. Until we can find a way to get you all back home you'll have to try and fit in with pony society."

EASIER SAID THAN DONE.

Author's Note

As I finished this chapter was I thought it waz 1,000 words or more, but hey. They're increasing.

Chapter 4

After the panic and Rainbow flying out the window and Sans and Pinkie laughing themselves down to the 'bone' Frisk came out from behind the couch and approached Flowey. Toriel tried to grab her before hand, but she ducked under her arms.

Frisk looked at Flowey curiously. "What are you doing here Flowey? I thought you were in the Underground." Frisk asked him.

Flowey groaned. "Well obviously I followed you guys out." He told her rolling his eyes.

"Well if that's so why are you still following us?" Frisk asked.

Flowey looked down. "I didn't want to be alone." He mumbled quietly.

"What?" Frisk asked not quite hearing him.

"I didn't want to be alone okay!!!" Flowey shouted.

Frisks eyes widened in surprise before she smiled at Flowey. "Awww you were gonna miss us?"

Floweys eyes widened in disgust. "No! I-I just. There wouldn't be any one down there and I'd be....all alone." He told her looking downtrodden.

Frisk looked at him sadly before motioning for her friends to come over here. Reluctantly they walked out from behind the couch.

Flowey looked up confused.

Papyrus cleared his throat. "Flowey. While you may have caused us some pain trapping us I believe that I the great Papyrus! Will give you a second chance at redemption."

Undyne nodded stiffly. "I still don't trust you, but if the kid says you're okay then I guess I'll give it a shot."

Alpys looked at him nervously. "I'll t-t-try to b-be nice w-with you."

Sans simply shrugged.

Toriel stepped forward. "Everyone deserves a second chance so I will grant this to you."

Asgore looked down at Flowey a knowing smile on his face and nodded.

Flowey looked at them all shocked while Rainbow Dash returned, Rarity regained consciousness.....again and Fluttershy came out from behind the bushes to stand beside Starlight who was looking at the scene with tears in her eyes.

Flowey smiled a forced smile because he has no soul. "T-t-t-thank you." He told them saying those words for his first time as a flower.

Frisk then brought him into hug which he stiffly returned.

Suddenly there was knock on the door that everyone turned to look at.

Twilight then trotted over to it and levitated the door open.......to see Celestia and Luna standing at the door.

Celestia looked at her with a serious look on her face. "Twilight, take us to the monsters."

Chapter 5

Asgore broke away from the group hug and started to walk towards Celestia and Luna while everyone else looked on with curious and nervous eyes. Flowey and Frisk were looking and preparing for any signs of trouble.

Asgore then nodded to the two sisters and they did the same. Settling themselves down on a couch the two Princesses looked at the monsters with unreadable expressions on their faces. Celestia then spoke.

"Who are you?"

Asgore raised his eyebrow in surprise at the question. He thought it would have to be with what they were and if they posed a threat, but he didn't expect this kind of answer. "I am King Asgore of Underworld. If I might ask who are you two?" He asked with an air of authority in his response.

Princess Luna then spoke. "We-I mean I am Princess Luna. Co-Ruler of Equestria and of dreams, the night, and the moon."

Luna nodded to her sister. "I am Princess Celestia. The ruler of Equestria and ruler of the day and the sun." After the introductions Celestias facial expression turned to one of respect and curiosity. "If I may ask what is Underworld and-" She cut off her question when she noticed the tiny yellow filly standing next to a skeleton with a blue hoody. "Who are you?" She asked her case now on Frisk.

Frisks eyes widened in surprise at STILL being able to be put out in the crowd even though she is the same species as the ponies.

"I'm Frisk your highness." Celestias eyes widened in surprise and confusion. This one pony who is just a filly had a tone of voice that would make anypony listen to what she has to say.

Shaking that thought aside she returned to reality to question this filly. "Why are you with these monsters young one?" She asked in a tone of voice that didn't sound accusatory, but instead curiosity and worry.

Frisk smiled up at her. "Because they're my family."

Celestia and everyPONY else in the room looked surprised at this response and Frisks "family" just smiled and Toriel wiped a tear from her eye at that response.

Celestia finnaly recovered from her shock.....again and instead decided to ask her something different. "But how did you meet them?" At that question Frisks chuckled nervously while all the monsters looked ashamed and nervous.

Sans then stepped forward. "It's a LOOOOONG story."

************************************************************************************************************
Equestria Underworld exit

Something glowed within the cave on the hill. A red wisp then floated toward the entrance and hovered there looking over the landscape waiting to see who would show up.

BUT NOBODY CAME.

Author's Note

I'M SOOOOO SORRY FOR THIS HIATUS. School has been stressing me out lately and I wanted to just read some fanfics and play Black Ops 3, but now I WILL update more often!