"Brilliant! Now I can finally go home to this new dimension and leave all these morons behind!" a new voice said from inside Mabel's pocket.

Mabel reached into her pocket, and brought out the source of the new voice.

It was (y/n)'s mind-reading device, activated accidentally by the hug. And its antenna was pointed directly at the other Mabel.

"Now to find a way to get rid of the original Mabel..."

Mabel looked up at her.

"Wha—"

But before she could finish her sentence, the other Mabel snatched the device out of her hands, and shoved her into a nearby outhouse, locking the door behind her.

Mabel peeked urgently through the moon-shaped hole.

"Hey, wait! What are you doing?! Ford's here to rescue us!" she yelled.

The other Mabel smirked at her triumphantly.

"Correction—He's here to rescue me. You're stuck here, idiot!"

"What?!" Mabel exclaimed.

"You think I want to be trapped in this Mab-hole listening to these nitwits talk about boys and glitter?" proclaimed the other Mabel angrily. "I don't even like glitter!"

Mabel looked at her in horror.

"W-what kind of Mabel are you?" she stammered.

The other Mabel flashed an evil smirk at her.

"The exact kind of Mabel you aren't" she said wickedly. "And considering how easy it would be for me to guess this, you'll probably never figure it out!"

Mabel gasped in horror as the realization settled in.

"You're... You're the exact opposite of me! You're... The Anti-Mabel!"

The other Mabel laughed mockingly.

"Ding ding ding! I was chased out of my dimension for being the most evil Mabel in the Multiverse. I have no home to return to!" she explained. "That's why I'm going to leave with your uncles and take over your life, and there's nothing you can do about it!"

She then held up the mind-reading device in her hand, and tossed it up and down admiringly.

"I'm keeping this, by the way" she said, pocketing it. "Could serve as some use later on..."

Mabel leaned in as far as she could through the peep hole.

"Mabel, no!" she screamed in horror.

"Mabel, yes!" the other Mabel replied victoriously.

Just then, the driver landed his truck in Dimension Mab-3l. The door flew open and a platform slid out for the twins to exit.

"Whoof! You think you can find your girl among all these lookalikes?" the driver asked.

Ford was just starting to step out.

"Why of course I..."

He froze when he saw the dimension full of all kinds of Mabels.

"... I... oh dear."

"Can't recognize your own niece?" Stan taunted. "Ha! Who's the bad caretaker now?"

Anti-Mabel waved her arms in the air and made her way towards them.

"Hey, grunkles!" she called, as she put her hands against her cheeks in the most goofy gesture possible. "LOL! I love pigs and sweaters! Hurr hurr! I'm a goofball! Wibble! Zibble!"

Stan smiled and pointed at her.

"That's her."

Mabel watched Anti-Mabel board the ship with her grunkles, and banged against the locked outhouse door helplessly.

"No! No! This can't be happening!"

She finally managed to tip over the outhouse and escape from the roof, only for the ship to fly away, with Anti-Mabel aboard.

She turned desperately toward the other Mabels.

"Everyone, quick!" she shouted frantically. "We have to stop that ship or I'm trapped here forever!"

"Totally" replied Bob Ross Mabel nonchalantly, who was busy painting a portrait. "I'll help right after I finish my cottages. Right, Meowbel?"

Meowbel, a cat version of Mabel, was busy chasing her own tail.

"Can't talk. Chasing tail" she purred.

"Ha! Go! Go! Go!"

Mabel had had it with all these Mabels.

"What's wrong with you guys?!" she yelled vehemently. "This is an important mission, and you're all just being totally self-center—"

She suddenly stopped in realization. She was complaining about the very same thing that Dipper had told her earlier.

"Ohhh..."

She then hung her head in her hands guiltily.

"Oh, Mabel, you gotta work on yo'self."

She climbed on top of dinosaur Mabel's head so that all the Mabels could hear her.

"Attention, Mabels of Mab-3l! I used to be just like you: so caught up in my Mabelness that I neglected those around me!" she declared. "Heck, I caused an entire Apocalypse just to get one more day of Summer!"

The other Mabels gasped.

"Crikey! You gotta be pulling our wallabies, mate!" said Australian Mabel.

"I'm afraid it's true, G'daybel. I'm going to be better, but in order to do that, I need to get back home!" Mabel said. "My ride is leaving, and if you help me catch it, I promise I'll never be selfish again! Now, I know it's a long shot, but... does anyone here have a grappling hook?"

In response to that, every single Mabel unsheathed their grappling hooks, and raised them into the air.

"Don't you ever scare me like that again, pumpkin!" Stan scolded from the inside of the ship.

Stan was hugging his niece lovingly, but Anti-Mabel didn't seem to care for the embrace.

"Apologies, dearest uncle. I will not transgress your laws again" she said nonchalantly, just waiting for the hug to be over.

Stan turned towards Ford.

"Haha! Transgress! Classic Mabel!" he said.

Ford, however, was squinting at "Mabel" suspiciously.

He grabbed his brother's arm, and pulled him out of Mabel's earshot.

"Psst! Stanley, something seems... off about Mabel."

Stan pointed at him accusingly.

"Oh, here we go" He said irritably. "You're just jealous that I was able to pick her out of a crowd and you weren't!"

Anti-Mabel made her way towards her uncles.

"Great Uncle Stanford, do you have any futuristic mega-weapons that I can bring home with me?" she asked. "For educational purposes."

Ford narrowed his eyes suspiciously at her.

"Yes...over there by the airlock" he said, as he started to reach into his trench coat.

Anti-Mabel shot him the biggest smile she could muster.

"Thanks!" she said, before making her way over towards the airlock.

"They're onto me! Hurry! Think of a way to dispose of them!"

At first, Anti-Mabel thought that her own thoughts were rather unusually loud, until she reached into her pocket and pulled out the mind-reading device, which was activated and pointed directly at her.

"Darn this stupid mind-reading devi—"

Anti-Mabel crushed the tiny device in her hands, and tossed it aside.

Ford immediately pulled out his blaster from his trench coat, and aimed it directly at her.

"Don't move!" he yelled, keeping his finger on the trigger.

Unfortunately, Anti-Mabel had grabbed the alien adhesive gun, and with a splat, Stan and Ford's feet had been glued to the floor.

"My alien adhesive!" Ford cried out.

Anti-Mabel lowered the weapon in her hands.

"I wanted to do this the easy way, guys. I really did" she said, the sinister expression back on her face. "We were all going to go home as one happy family."

She pressed the airlock button, and two glass airlock cylinders clamped down over Stan and Ford, trapping them both.

"But I guess I'll have to tell Dipper and (y/n) you two were lost in space" she said, shrugging carelessly. "Looking forward to my new dimension, by the way. Been hankering for a new civilization to overthrow."

Stan pressed his hands against the glass and looked his niece directly in the eye.

"Mabel, sweetie, I think maybe you've had too much sugar—"

"I'm not Mabel" Anti-Mabel screamed with outrage.

Ford turned towards his brother angrily.

"Dang it, Stan! You got the wrong one!" he accused.

"Oh, you are loving the chance to throw this in my face!" Stan shot back.

Anti-Mabel smirked wickedly at both of them.

"Sounds like you two need some space" she said, her fist hovering over the eject button. "Endless space!"

But before she could press the button, the entire ship started to rumble, forcing her away from the control panel.

"Wha? What is that?!"

BOOM!!!

When the dust had cleared, there was an army of Mabels standing in front of the hole they'd blasted. Sitting on the back of Pterodactyl Mabel was none other than the original Mabel herself.

"Looks like the Mabels have turned!" she declared, holding up Mace Mabel in the air.

"I don't get it" said Table Mabel.

Mabel then aimed mace Mabel at Anti-Mabel.

"Now give me back my grunkles!" she demanded.

"You want them? Come and get 'em!" Anti-Mabel declared, holding up two blasters in the air. "This shooting star shoots back!"

And with that, they all charged at each other, all of the Mabels against Anti-Mabel.

"Mabel fiiiiiiight!" yelled Table Mabel.

The entire ship was tossed around during the fight, with various cries echoing throughout the space.

"Take that, Mabel!"

"You'll never take me alive!"

"Son of a %$!#^%^!"

"Ow!"

Unfortunately, it didn't look like all of them were going to make it out alive. Military Mabel was lying on the ground, a splatter of alien adhesive on her chest.

Mabel was kneeling beside her.

Military Mabel coughed weakly.

"She got me bad, Mabel... I think I'm going to visit that big Mabel in the sky..."

Mabel leaned over her sadly.

"Don't you die on me, military expert Mabel" she cried. "Not on my watch!"

Military Mabel took out a photograph of a pig wearing a military uniform.

"I have a pig at home..." she coughed. "Tell him...hrkk...tell him he's...a cute little guy..."

Meanwhile, Threebel pressed the air lock button, releasing Stan and Ford from their glass cylinders.

"Threebel to the rescue!" she exclaimed.

"Yes! Rescued by math!" Ford cried eagerly, as the glass was lifted off of him and Stan. "Just like in my dreams!"

Stan was skeptically staring at Fire Mabel, who was using her fire abilities to free them from the alien adhesive.

"This is dumb. All of this is dumb" he simply said.

Suddenly, Table Mabel, Fire Mabel, and Threebel were splatted to the ground with the alien adhesive, all of them stuck there no matter how much they struggled.

"I can't feel my legs!" cried Table Mabel.

Standing over them was Anti-Mabel, and she had a wicked smirk across her features as she held the alien adhesive gun in her hands.

"Had enough?" she said maliciously.

However, suddenly the gun was knocked out of her hands by the hook of a grappling gun.

She turned to find none other than the original Mabel standing there, grappling hook in hand.

"You! I'll knock the glitter out of you, you giggling punch line!" she cried in outrage.

Mabel smirked back at her.

"I'd like to see you try."

Anti-Mabel suddenly pointed to the side.

"Look! A puppy!"

Mabel turned in the direction where she was pointing with a hopeful expression.

"Where?"

Anti-Mabel landed a punch square in the middle of original Mabel's face, and before they knew it they were in a full-on fist fight, exchanging blows as they tackled each other to the ground.

The Stan twins could only watch the fight in horror, and hope that it was their Mabel who was winning.

"What's going on?! Which one's the real Mabel?" Stan exclaimed.

"I can't tell! They're equally adorable!" said Ford, who was holding the adhesive gun and wondering who he should fire it at.

One of the Mabels had the other in a choke hold on the floor, and she had her sweater arm wrapped around her neck.

"Welcome to sweater town!" she shouted.

The other Mabel struggled against her grasp, then turned towards their uncles.

"Stan! Ford! She's the imposter! Take her out!" she pleaded.

"She's lying!" insisted the other Mabel. "She's evil incarnate!"

"Why does this always happen with doubles?!" Ford exclaimed frantically. "If there was only some way to tell them apart!"

As if on cue, one Mabel suddenly ripped the sweater off of the other one, revealing her white t-shirt underneath that read, I Hate Cats.

She looked up at them with a desperate expression.

"Wait...wait...it's not what it looks like!" she exclaimed frantically.

Stan and Ford both slammed their fists over the airlock button, and Anti-Mabel was trapped in the same cylinder of glass that they had been.

Anti-Mabel started to pound furiously against the glass.

"You think you've defeated me, but I'm a part of you!" she shouted. "Every selfish choice you make, that's being just like me! What do you have to say to that?!"

Mabel only shot her a vengeful glare.

"This is for military Mabel."

She slammed her fist over the eject button.

And with a loud, boom, Anti-Mabel was shot out of the ship and sent flying through the endless Multiverse.

Later, the Mabels had all boarded the ship, and were saying goodbye to Mabel and her uncles, who were floating right in front of the wormhole.

Military Mabel grinned at them.

"That glue sealed my wounds, soldier. Thanks for everything!" she said.

"With this ship, we can find our various home dimensions!" Fire Mabel piped in. "I can't wait to see my (y/n) and Dipper again!"

"Me two!" roared Dinosaur Mabel.

"Me three!" chimed Threebel.

"I'm a table!" chirped Table Mabel.

And with that, the ship flew off, disappearing into the Multiverse.

Mabel waved goodbye.

"Later, Mabels!" she called after them. "Don't do anything I wouldn't do! Hahaha!"

Meanwhile, Stan and Ford were looking at each other rather uncomfortably.

"Well, I guess we're both terrible caretakers" said Stan, scratching the back of his neck awkwardly.

"Rescued by our own niece..." said Ford with an ashamed tone. "I don't know how we'll live this down."

Mabel turned to look at both her uncles.

"Hey, for what it's worth, I love you both" she reassured. "But maybe the reason you two can't take care of kids is that you kinda still are kids."

She then pulled them both into an embrace.

"Maybe it's time for you to take care of each other."

Stan and Ford exchanged a look with each other as she pulled them together in that hug.

Later, the three of them were back in Gravity Falls. Stan and Ford were finally sealing up the wormhole with the alien adhesive gun.

"Haha!" cheered Ford.

"Take that, Multiverse!" Stan exclaimed. "This is how we do it in Jersey!"

"Pines! Pines! Pines!" they both chanted.

Both Dipper and (y/n) were with Mabel.

(y/n) had a worried expression written all over her face.

"Are you okay? What happened in there? Did anyone mess with you? I will murder them! Just tell me their names, and they'll be dead within the next few hours!"

Mabel chuckled.

"Relax, (y/n), I'm fine!" she insisted. "Perfectly fine."

Dipper, on the other hand, was eager to learn about Mabel's adventures in the Multiverse.

"I can't believe you got to go to the Multiverse!" he said excitedly. "What was it like?!"

Mabel started to scratch the back of her neck uncomfortably.

"Real stupid, but the stupidest part was me" she admitted. I guess what I wanted to say is... I'm sorry for being selfish this Summer. I guess it took me dealing with myself to realize what you guys put up with."

She then reached into her pocket, and brought out the mind-reading device, not quite in its original state. There were wires sticking out underneath several pieces of pink duct tape and alien adhesive.

"And (y/n), here's this back. Sorry I was so careless with it" she said, handing it to her sister, who took it speechlessly.

"I know it's not exactly how you gave it to me but—"

(y/n) suddenly wrapped her arms around her tightly.

"If you ever get sucked into a wormhole again, I will kill you" she said.

Mabel chuckled, and wrapped her arms around her sister as well.

"I missed you too, (y/n)."

(y/n) then let go of Mabel, took out a pad of paper and a pen, and started to scribble something down.

"Now adding Anti-Mabel to the list of people I need to kill" she said, holding up the mind-reading device to Mabel. "Thanks for thinking about her."

Mabel crossed her arms over her chest.

"No need to worry about her. I shot her out of an airlock" she reassured (y/n), before turning to Dipper. "Oh... I also got something for you from someone named Mabipper. She said I could have it."

She held out a navy blue journal, with a metal pine tree on the front cover.

Dipper took the new journal in his hands, and looked down at it with complete shock and disbelief.

"What?! This is for me?!"

Mabel put her hands on her hips.

"It's time for us to start some new adventures" she said. "And this time, I won't always hog the spotlight."

The triplets all exchanged a knowing glance before all five of them started the journey home, the sun just setting behind them.

"Also, if you see someone who looks exactly like me but hates rainbows, drown her in a river" Mabel said.

"What?" said Dipper.

(y/n) smirked and fingered several weapons in her toolbelt.

"Will do"

___________________________________________________________________________ 

The next chapter, "Murder in the Manor Northwest: Part I," is currently scheduled for release 9/14/19, but it could possibly be delayed if my power is still out. If that is the case and I also didn't post a new date change, please don't panic! It's just because my wifi is out, not because I forgot.

Murder in the Manor Northwest was supposed to be one part, but it ended up being so long that I had to split it up into two parts so that the length would match the rest of the chapters.