Hey guys! It's Natflash here bringing you a Special Halloween one-shot! WHOOP WHOOP! The next few episodes, to get in the Hallows Eve Spirit are going to be Halloween themed, so yeah!

This episode is based off of the SUPER AMAZING Silly Filly Studio animation 'Fall of the Crystal Empire.' The links on my profile, so go check it out!

Oh, and you might be surprised on who I picked for the role of King Sombra…

DISCLAIMERS!

I do not own MLP: FiM or Gravity Falls, who belong to their respected owners. The only thing I own is the AU!

Fall of the Empire

Rated: K+ - T (Just near the end.)

Summary: Dipper and Mabel are on the brink of defeating the Evil Queen of the Crystal Empire, but when she expects them, it suddenly becomes a lot harder. But when she tries her hand at Dipper, she finds she got more than she bargained for…

*WARNING! This chapter contains one sided Dipper x Pacifica, so yeah...*

Dipper gazed out on the once beautiful Crystal Empire, seeing the rubble and carnage that the Evil Queen made the Empire experience. The once gorgeous castle was now covered in thick, twisted black crystals. Green and purple fire blazed throughout the Empire, but almost no one was in sight. The once glistening homes of the Crystal people were now dull and faded. The whole empire now looked like a wasteland.

"Coward." Dipper spat out. "Walled up in her castle like it were some kind of tomb."

Dipper and Mabel stared onwards in a small pause of silence, both totally decked out in armor. Dippers' was obviously a black, covering his whole body with two moons entwined on the chestplate. His gauntlets were a silver grey, and his helmet resembled that of an open Spartan helmet, raven black with a bright blue plume on top, leaving his cheeks exposed. His cape shimmered and glowed, even in the muted world.

"Our ground forces can't advance beyond her crystal field." Mabel said, her armor to, exquisite as it was tough. It was all leather, but with golden armor adorning everything, it made beautiful but deadly patterns. Her helmet was a crown, but attached at the back of her colorful hair. The large, golden halberd she carried (that was twice her size) made her look like some kind of ancient guardian.

"And you know what she can do to a normal person, bro, unable to defend their minds with magic…" Dipper only 'tched' at the comment.

"We only need a small window of attack. She's lost a lot of ground. The Elements should dispose of her-"

"And if they don't?" Dipper inquired, making Mabel stare at her brother in surprise for a moment. Since when had he ever doubted the power of the Elements of Harmony? They won plenty of battles with them before, so why not now?

"Why would they fail?" She asked her brother in response, staring straight back in her purple eyes with his teal ones.

"Hypothetically speaking…" He only said. Ah yes, Dipper was always the one to question the outcome of everything. It was annoying sometimes, but Mabel learned to deal with it.

"Well, hypothetically speaking, bro, we're prepared just in case!" She patted her halberd firmly and smiled, and when Mabel smiled, it was contagious. Dipper cracked a cocky smiled as his eyes narrowed at the target, his hand gripping his silver sword firmly.

"Indeed. She knows not what forces she's tampering with. I say we don't stay her end further." With this, he spread his wings and flew into the sky. Mabel's eyes followed her brother, until she too, spread her wings and flew up high at the castle window with her brother.

With a great crash, the two twins flew into the throne room of the evil queen, lighting their palms together (Dippers being his silver and Mabel's being gold), and sending a beam of pure energy down onto the unsuspecting queen. A plume of smoke and rubble was raised up, with the twins still in confusion hovering above.

"… Is that it? Really?" Dipper questioned. He was soon shaken out of his mind when a large, black crystal slammed right into Mabel's stomach, sending her flying into the wall, with someone else on top with a large, black crystal scythe.

The Evil Pacifica Northwest- or better known- as Queen Sombra.

Her cape was a bright crimson with leopard fur surrounding the edge. A silver steel covered her neck and part of her shoulders, with knee-high iron high heels and a short, black dress to cap it off. Her long, blond hair was pinned back by her silver, spiky crown with a large, red horn showcased on it. She handled her scythe with brute force, helped by her silver gauntlets that ran up to her elbows.

Time seemingly stopped as she stared at him, her red eyes complimented by the purple smoke emerging from her mascara. Her gaze stopped him flat, giving him barely enough time to raise his sword in defense before he was sent flying down into the floor.

She smirked at her victory, and focused her attention on the glowing white light. It smashed her crystal to pieces, giving her enough time to jump and raise her scythe before Mabel appeared and slammed her halberd down hard.

Dipper shakily stood up from his spot on the floor, and quickly noticed the falling crystal shards that would crush him. On his feet in an instant, he swiped his sword back and forth, making the pieces fall to the sides, just as Pacifica made contact with her scythe to his blade, sending both of them flying back, landing on their feet.

Dipper was making strange, silver runes in a runway pattern, while Mabel was flying high, flipping her halberd, folding her wings back, and zooming towards Pacifica. Dipper copied on the same side, flying through his speed portals, both of them screaming from effort.

Pacifica just smirked, and twirled her scythe like a baton. She slammed it on the ground as her eyes glowed a bright green, signifying her using magic, and her body turning onyx black, creating massive crystals that pinned the two advancing twins to the wall.

Mabel, her fury getting the best of her, made her eyes shine a bright gold, heating up her crystal tomb.

Pacifica smiled at her temporary victory before Mabel burst out, zooming down and slamming her halberd on the ground. A thick cloud of dust arose, blocking Mabel's vision temporary.

Breathing heavy, she got up and got into a defense position. "Show yourself, coward!" She called to the darkness as a feminine laugh rung out. She turned at the last second, stopping Pacifica (who seemed to have appeared from nowhere) from chopping her in half with a well-timed block. Mabel thrust her halberd forward, slightly cringing at the sickening sound of metal piercing metal. She looked up with a cold look on her face, Pacifica staring in shock at the black vortex where the princess of the sun stabbed her.

"It's over, Pacifica. Yield!" The queen of darkness eyes glowed lime as she laughed, readying her black scythe. Mabel knew immediately what she was planning, and struggled to pull out her weapon.

"So… much… HATRED!" She screamed, slicing her scythe down to find Mabel already escaped. She pulled her weapon up, and with her royal purple magic, gripped her scythe as she advanced towards her enemy.

"You speak of cowardice, Mabella?" She addressed, using the princesses full name as she grimaced. "Have you forgotten whose castle you're in?"

She growled as she swiped her scythe, missing Mabel's armor by mere inches. Mabel retaliated by butting the end of her weapon on the poor girls face, swinging it upwards to stop any attack, and standing her ground as she and the self-proclaimed empress stood at a stalemate.

"Listen you butt-face!" Mabel said, her rage dripping in her words. In situations like this, sometimes even the dumbest insults were hurled. "I don't care what kinda crazy wacko powers you're using!" She whipped her halberd back, and like a spring, let loose on Pacifica, who blocked her attack. "You are going DOWN!"

Pacifica laughed again as her eyes returned to their creepy lime color, the purple smoke becoming slightly red. "It seems like even the gods lack purity in their hearts." She retracted her scythe, blocking another attack from the princess. "I can taste your wrath, Mabel." She spat the word out like it was poison. She slammed her scythe hard against the halberds handle.

"And it… is delicious."

Now do keep in mind, Mabel rarely gets mad. But when she does, you need to stay away or else face something worse than thunder.

Like the pure white of a thunderbolt, Mabel's temper flared like you wouldn't believe. She slipped the halberd out, and focused every ounce of magic she could pour into it.

"SILENCE, YOU JERK!" She screamed in rage, letting loose a beam the sent her back a bit and made her unfurl her wings from sheer recoil. Pacifica just smiled cruelly, turned black like a piece of onyx, and turned into a puff of smoke which slipped away. The beam hit a large section of rock, creating a giant plume of smoke which covered Mabel's vision. She lifted a wing to protect herself while she coughed

Meanwhile, almost inadvertently, the beam did affect something: the large crystal that housed a trapped Dipper. It cracked quite a bit, and Dippers eyes fluttered before he could see. He looked around, trying to find any sign of Mabel or Pacifica.

What he didn't expect to find was a large plume of dust with a mysterious, green flash emerging from it. Remembering his sisters' warning, he used his magic to try and grapple for his sword, before weakly picking it up.

Mabel lost her armor and her halberd, but she could still see. She lowered her white wing shielding herself, and looked around.

She was in a relatively dark room, making her wary for any signs of Pacifica ambushing her. It was cracked and had splotches of moss here and there.

"S- show yourself!" Mabel said, slightly nervous. She gasped in fear at the sight of a figure by the large, cracked window, but relaxed as she saw who it was.

"Oh, Dipper, there you are! Thank goodness! I thought you just fell off the earth! I could kinda use some help battling Pacifica, so…"

Sure enough, the Prince of the Night was standing, his back towards her, his cape fluttering like the wind. He whipped around, his eyes now a shining white like one of Mabel's dresses.

"N-No, Dipper, please…" She squeaked out in fear, backing up as her brother advanced towards her. He didn't look the same, but from what she could see, his black armor was gone, replaced with a new set, and his now black wings grew into almost twice their normal size. The whites of Mabel's eyes became a bright green, her purple eyes shrinking with fear. Purple smoke was erupting from the corner of her eyes.

Mabel's worst fear was her brother.

"Dipper… It d-doesn't need to be like this…" Dippers hands lit with flames of bright silver blue, flashing only for a moment revealing Pacifica, about to strike Mabel down for the final time.

"… DIPPER! …"

Pacifica was about to beat this pathetic Princess down, when she got stabbed in the back. She whipped around, revealing a bright blue sword with a moon on the handle. She dissolved it with her magic, and stared coldly at the boy prince with his sword in hand, summoning six more magical swords just like it. He stood with the poise and solemnness of a general leading an army.

Pacifica dissolved the wound with her royal blue magic, and it became an intense staring match for a good few minutes, each one daring the other to make a move.

Dipper decided to take the risk. He closed his eyes, and with his powers, drew the swords into the air. His eyes were a white like a dove as his spirit swords flew through the air, Pacifica summoning a large crystal to grow blocking them. With a swipe of her scythe, the crystal was sent flying back at the young preteen.

A blade cut cleanly through it, and Dipper flew right into Pacifica with his sword out. She blocked it, sending Dipper flying up and flipping to a wall. He landed on his feet, sideways, and created a rune to give him the extra speed he needed. He soared down, stabbing his sword into the rock were Pacifica was, she jumped back to avoid it.

"Relentless…" She muttered. It was true- if you harmed his sister or got him ticked, there was no way that Dipper was giving up until you were dead.

"Why such lengths to protect your petty imperialistic interests?" She questioned the boy. He glared coldly back at her, his gaze narrowing.

"You're a fool if you think that's what I'm trying to protect." He stepped forward, creating another rune, and flying at a great speed towards her. He struck her twice with his sword, his form only a blur of air and feathers. She managed to strike the sword from his hands, sending it flipping blade over handle, until it was stabbed into the floor.

Dippers eyes grew once again white, as Pacifica was finishing him off. She looked up at the incoming shadow, and couldn't move as the giant spirit sword left a deep gash in her neck armor. Dipper calmly got up on his knees, making the sword vanish. Using his magic, he healed the small wounds he had suffered, his face beaded with small droplets of sweat. Pacifica followed his example; the red horn on her crown glowed purple, healing the gash her foe had given her. Both were breathing heavy, and while Pacifica had her scythe, Dipper was defenseless.

He looked over slightly at his sword, using his concentration to pick it up. It wobbled slightly, glowing a silver blue at the handle. Pacifica noticed this instantly, and she used her black magic to dissolve Dippers weapon and make big, black crystals erupt around him, caging him like a wild animal.

"Release me." He said, his eyes staring daggers at his captor. Pacifica laughed slightly at this remark and replied. "In due time. I was curious as to why your sister would fear you…" Pacifica's two fingers crawled up Dippers chestplate up to his shoulder. "… It seemed she was right to do so…"

Dipper knew immediately where the conversation was going, and he didn't like the outcome at all. He flicked her hand away from his shoulder and pointed to himself.

"Mabel isn't afraid of me! She's my sister."

Pacifica grinned knowingly and got uncomfortably close to Dipper.

"You'll see before long. I mean, do you really think that Mabel understands your night, and all its… handsome glory?" Her finger traced the moon pattern of Dippers chestplate.

"Don't act like you do in turn, Pacifica." Dipper shot back, disgusted by her move.

"Oh, I understand perfectly." She grinned at him with lust in her eyes. "You find me to be a tyrant, yet the best kind of slave is one who is willing…" Dipper knew immediately what the girl had in mind for him, and he was repulsed.

"SILENCE!" He screeched, his eyes a burning white, his powers shaking the crystal confinement. Pacifica just widened her eyes a fraction, impressed by the serious boy's strength.

"Oh Dipper, you can deny my warnings all you wish. It won't change your fate."

"Save your breath." The boy hissed coldly at her.

"Even if by some random miracle you were to defeat me? You'd only fall to your own sister. Why be forced to choose?" Dipper snorted at this remark, but said nothing. Pacifica smiled, knowing she was getting under his skin and into his mind.

"You're precious homeland of Gravity Falls will see many a foe in its future. Would it not make sense for us to stand against them… together?"

Dipper was shocked. She was requesting him to actually join her! Like that would ever happen.

"We would sooner take our own lives then submit to you!" Dipper said, slamming a fist against a crystal for extra emphasis. Pacifica only smiled at this retort.

"Submit?" She giggled slightly. "Just like you did to your sister, handsome?" Dipper reeled back, utterly disgusted. She liked him. It was enough to make anyone sick.

"I admire your resolve, Dipper." She said, looking off to the side at another figure. "You are strong."

Mabel was on her side against the floor, her wings spread weakly out, her halberd nowhere in sight. Purple smoke rose out of her eyes.

"You're far more fit to rule, far more worthy of respect then Mabel. You have an opportunity now, to take her place." Dipper, of all things, looked down and around, considering what the queen of darkness said.

"Together, Dipper, we could show the nation what it truly means to fear the night." Dipper looked at her, then closed his eyes and imagined. Pacifica could already see what would happen: Panic flourishing through the streets of Gravity Falls, darkness consuming everything, and who would rule? Her and her new king, Dipper Pines.

He would look fantastic in silver, white, and red instead of that horrible black he constantly wore. His crown and armor from the strongest steel known to mankind, but his robes soft as the stars gaze down to earth. He would be treated like the king he deserved to be, and with her beauty and his brainpower, Gravity Falls would be ravaged. Mabel would be locked in the farthest tower, away from any man alive. She could see it now, if only Dipper would agree…

"You are a fool."

Those four words shocked her. She gives him the opportunity of power, and what does he do? Rejects it. He looked at her, and placed both of his hands sharply against the prison he was in. It shattered like glass, just like a small part of Pacifica's heart, but she played it off and smiled, and turned dark as a raven.

"So be it."

Dippers body glowed with a teal energy, his eyes white, and zoomed towards her. She bulked herself up, creating a shadow of her original form that swallowed Dipper whole.

Dipper was sent flying out of the shadow, hitting the ground with a thump that tore off his helmet, exposing his brown, fluffy hair. He skidded along the rock floor before stopping to a halt. Weakly getting up, he too was experiencing his worst nightmare. His eyes glowed green and purple smoke erupted from his eyes. Pacifica reformed some distance behind him, looking… almost sorrowful at him.

"Such a shame; You could've been a great ruler." Dipper was panting hard, sweat beading on his face, but her felt something else…

Terror.

…

It felt odd, but it seemed to empower him.

The joy of causing panic and destruction with no one to stop you…

It felt… good…

…

In one of Pacifica's high windows, the moon arisen without Dipper's magic, but instead, like a virus, slowly turned into splotches of red that spread everywhere.

A quite literal blood moon.

The Prince of the Nights eyes grew black as shadow, and the purple smoke infecting him vanished. He laughed cruelly, making Pacifica's eyes shrink from fear.

"You thought you found an ally in darkness…" He started, his cape growing wider and wider. "Do you comprehend the powers you were GIFTED with? The same powers, I was BORN into." He turned around and stared at her. His eyes had their same teal color, but looked snakelike and cruel. The whites of his eyes had a small bluish-yellow tint to it. He stood up, and menacingly walked towards Pacifica.

"Where do you think the shadows all go to hide from the precious light? Just who do you think stands against them?" With his now teal magic, he ripped the scythe from its embedding in the ground, and stared at its handle.

"What you possess, Pacifica, is a mere fraction of my might. The same might I stand unyielding against, each and EVERY night."

"S-Stay Back!" Pacifica howled, blasting a beam of darkness at the boy she thought as hot. With his magic gripping the scythe, he merely deflected it, exposing his new wings. They were twice his size, and instead of an angels, thy looked more like the feathers of a raven. The scythe had changed too: It's once black crystal blade turned into one of shining, white steel, looking like a crescent moon.

"You are NOTHING compared to them." He hissed, his voice reverberating slightly, he turned noticeably paler each passing minute. "You are NOTHING compared to ME!" He flew as fast as lightning over to a startled (and admittedly frightened) Pacifica, and pinned her against the wall, looking totally different than before.

Truthfully? Pacifica wanted to be against a wall with Dipper, but never like this.

"YOU CLAIM TO KNOW FEAR?!" He screamed in her face, his voice much more menacing and deeper. He shoved the scythe deeper and deeper into her neck, not cutting her but enough to make her choke. "I SHALL SHOW YOU TRUE TERROR!"

"What… are you?" She weakly made out.

Dipper only laughed and back up slightly, using his powers to lift the scythe, his eyes turning white. With the moon behind him, red as a rose filled with thorns, he spoke only four words.

"I… am a terror."

Then everything went black.

Mabel's eyes fluttered open, before letting them widen in shock.

"Dipper!" She called, concerned for her brother, not even taking notice of her surroundings.

"What is it?" She heard a voice. She turned and saw her brother safely land beside her, his helmet nowhere in sight. She breathed a sigh of relief.

"Thank the sticker gods above you're Ok!" She rushed over and gave him a hug with her arms and her wings. Only afterwards did she notice her surroundings. The castle was gone, as well as Pacifica, leaving them in a vast, icy field. A light snow was falling around them. The moon was up - Dipper must of raised it, she assumed – glowing a pure white.

"Where are we?" she asked. "What happened to-" She noticed her brother having a guilty look on her face, and she gasped slightly.

"Pacifica… is no more, Mabel…" He started. "But- the Empire! She… I…" He was going to confess everything when Mabel spoke up for him, shocking him slightly.

"To banish an entire empire… how much hatred and power were we truly facing?" She breathed a sigh of relief and looked at her brother with pride. "I'm just glad you're alright, bro, and that you got us out safely." Dipper looked down in the ground with guilt in his eyes.

If only you knew…

He was snapped out of his thoughts when Mabel stood up and cleared her throat.

"We need to bear news of this defeat to our subjects. Not every fight is going to be a victory. Come on, bro-bro, let's go home. I'll tell Stan to make hot chocolate!" She grinned at him and flew off in the other direction.

Dippers eyes followed her, before looking at the ground, his eyes reverting to their cat-like state in the blink of an eye.

Far more fit to rule… Far more worthy of respect… then Mabel.

He shook his head, clearing such evil thoughts, his eyes reverting back to normal, before flying off after his sister.

THAT ANIMATION.

IT WAS JUST AWESOME.

IT JUST WAS.

So yeah, hope you guys enjoy!

And, Oh wow, Dippy, you feeling Ok?

I kinda wanted to show just how dead serious Dipper could be if you got him super furious, and I secretly scared myself writing this.

Also, guys, if you have a request for a episode, PM me, don't put it in the comments, because

1) I'm gonna get spammed with requests.

2) I'm not afraid to delete any comments with requests.

Don't think I don't love you guys, but just, send only words, not requests!

Oh, right!

Be sure to pick up you Queen Pacifica action figure on the way out! The cape is detachable!

Oh, and don't forget to check out the poll on my profile about what fanfiction to do next!

So anyway, please follow, favorite, and most importantly, review!

And have a fantastic October!