Warning: This is a one shot that will have Gore and is honestly more of a test to see exactly how much I can get away with for the sake of my Villain Deku fic and other fics I shall be writing in the future. Also I have read the Book of Bill however I was planning on using this as a test platform before I read it so just pretend that doesn't exist. Now then on with the show.
"Stanley," Ford says, pulling him away from the Dipper and Mabel's leaving party. "We need to talk."
"Sure," Stan says as the two walk away from the party to the side of the house.
"I need to know did Bill say anything when he was being erased?" Ford asks, staring at Stanley.
"Sure he offered me money and fame and infinite power and stuff, why?" Stan asks.
"Not that he always says stuff like that. Did he say anything about revenge or anything along those lines?" Ford asks, taking a step towards Stanley.
Stan takes a step back and says, "Geeze Ford I didn't remember my own name a week ago give me a second will you."
Two weeks ago in a Stanley's mind
"What's happening to me?" Bill says as he starts glitching in and out of existence. "You will pay for this Stanley, do you here me! You will pay for this!"
Stan scoffs, "You're being erased you crazy triangle you can't do anything."
Bill continues to glitch out and fade away he looks to the sky and says, ".dneirf dlo ,em egnevA"
"Speak plainly you damn triangle," Stan says.
Bill looks at Stanley and with a look that sends shivers down Stan's soul says, "They will pay for your sin, Stanley." Before promptly ceasing to be.
"Nah just some cryptic mumbo jumbo," Stan says to Ford. "He's gone anyway, we'll be fine."
"Good," Ford says, relieved. "Good in that case I have something else to discuss."
5 years later
"Come here babe," Pacifica says, pulling Dipper closer and giving him a kiss. "Happy 18th birthday."
"Thanks, Pacifica," Dipper says, returning the kiss as Dipper and Mabel stand at the Mystery Shack with all their friends, Soos, Pacifica, Wendy and co, Gideon, McGucket, and family, Stan and Ford, from Gravity Falls.
"Ugh get a room you two," Mabel says, teasingly.
"After all the years of boy craze I had to deal with?" Dipper says. "Nah you get to deal with this."
"He has you there Mabel," Wendy says, chuckling.
Mabel tsks slightly causing the group to laugh slightly.
"Come on guys just blow out the candles already," Robbie says. "This is taking way too long."
"Alright, alright," Dipper and Mabel say, walking over to the cake.
"Happy birthday to you. Happy birthday to you, Happy birthday to Mabel and Dipper, Happy birthday to you." The group sings as they all clap and they lean into the blow out the candle.
The candle goes out and the group starts clapping but the candle quickly goes back up.
"Weak lungs Pinetree," Gideon says, chuckling slightly.
"Seriously," Mabel gives Gideon a look before blowing again only for it to pop up immediately after going out.
"Okay who bought the trick candles," Dipper says as he presses his finger to the candle and it goes out only for it to reappear and burn his hand.
"OW! What the hell!" Dipper says, staring at the candle.
The candle falls over onto the cake and burns message in the cake.
"If you wish for the candle to go out, answer these riddles 3."
"Oh dang it who got the logic cake for Dipper," Mabel says as the message disappears and reads:
"Ever nearing, never veering
Overarching, domineering
Chaotic, yet on its way
Despotic: beset, come what may
What is this unyielding lot
That can't be fought
That can't be bought
It binds us tightly in its thrall
The one thing that awaits us all."
Dipper leans back thinks to himself for a few seconds before saying, "Destiny?"
"Try Again."
"… Fate?"
"Correct."
Ford walks forward slightly and looks down at the cake as the rest of the group discuss who made the cake.
"We did buy it from the gnomes," Soos says.
"Yeah but they don't strike me as the riddle type," Wendy says.
"I am always near, but never far
I am always around, but never seen
I am often avoided, but always catch up
I will come when your old and grey or maybe the very next day
I come in many forms whether irony, love, laughter, or hate
I am everyone's final fate"
"Death," Dipper says.
"Correct."
Ford stares at the cake and mumbles to himself, "Who on earth would send a riddle."
"I come for you
For what you've done
I can't be bought
You can't outrun
Those who see me
Prepare to run
What am I?"
"… Justice?" Dipper says.
"Who on earth would do this?" Ford says.
"Incorrect."
"Revenge,"
"Close. Try again."
"Not on earth," Ford's eyes widen as he looks at Dipper.
"Vengeance."
"NO!" Ford yells as he slams the cake on the ground.
"What the. Why did you do that?" Mabel says. "I wanted cake."
On the grass a word appears.
"Correct."
"Everyone back away," Ford says as he pushes everyone back away from the message.
"The time has come to pay for your sins."
A gust of wind blows out the flame leaving the group to glance at Ford as he pushes them all into the shack.
"This still has the unicorn protection right?" Ford asks Soos as the group crowds inside.
"Yeah why?" Soos says.
"Because we're dead if it doesn't," Ford says as he peeks out the curtains at the forest.
Stan stares blankly out into the forest as he thinks to himself, "It can't be. It can't be he's gone."
As each moment of nothing continues Ford breathes a small sigh of relief and looks down at the ground.
"Great Uncle Ford," Mabel says in a scared tone. "Who is that?"
Ford looks up and sees a figure walk out of the forest with a pitch black cloaks
The figure looks up at the house and yells loud enough for the whole town to hear.
"STANLEY PINES OF GRAVITY FALLS!"
She looks through the window at Stan and says, "Do you know who I am?"
As she finishes speaking a gust of wind blows and her body disappears like sand.
The group takes a step back away from the window and Ford looks at Stanley.
"Grunkle Stan, why is he after you?" Mabel whispers.
"I don't know, sweetie," Stan whispers.
The house slowly starts to shake as the group looks around at each other.
"Oh fuck," Pacifica says as she stares at one of the walls.
The group turns and looks as a pair of eyes stares back at them.
Then another
Then another
The group takes a step back in horror as everything in the house gains a pair of eyeballs that stare at them.
Suddenly the house starts violently shaking before it promptly explodes outwards leaving the group inside unharmed.
In the distance the remains of the unicorn magic flicker before turning to ash.
Slowly the ground starts to rumble before a crack forms in the earth.
The crack in the ground then starts to move like a mouth and starts singing, "Hystos! Hystos! Hystos! Hystos! Hystos! Hystos! Hystos!"
The woman slowly levitates out of the ground and stares at Stanley.
"Hystos," Ford says in terror.
"In all my years of living it isn't very often that I get pissed off. I try to chill with the damned but you crossed the line," Hystos sings, staring at them. "I have been so gracious and yet you killed a friend of mine. That's right, the triangle you destroyed was mine."
"No," Stanley mumbles.
Hystos smiles and raises her arms causing the ground to shake and the forest around them to become engulfed in beautiful multicolor fires, "I'm left without a choice and without a doubt yes the zodiac is fighting with the flames now. I've got to make you bleed. I need to see you burn but before you go I need to make you learn how mercy is hell upon ourselves."
"Mercy is hell upon ourselves," the ground says like a background choir
"Mercy is hell upon ourselves. Ourselves." Hystos disappears once again and in a burst of flames appears behind Stanley.
"You are the worst kind of shit cause you're not even fun. A mortal who reeks of self importance that's what I hate! Cause you fight for your lives but don't realize that they ain't worth a damn." Hystos raises her arms, causing the sky to turn blood red, laughs, and continues, "I mean you totally could have avoided all this had you just fucking died. But no."
Hystos grabs Stan by the throat and lifts him into the air, "You are far too nice. Mercy has a price; it's the final cost to pay. You refuse to die and yet you killed him unlike you I have no mercy left to give cause Mercy is hell upon ourselves!"
The ground continues to sing "Mercy is hell upon ourselves!" as Hystos flies 50 feet into the air with beautiful wings made out of every weapon ever used in an act of violence still holding Stan by the throat.
"Mercy is hell upon ourselves! Ourselves." Hystos stares Stan in the eye, her eyes glowing with bright red runes in her irises as she slowly squeezes his throat. "And now it is finally time to say goodbye! Today you die! Unless of course you apologize for my friend's pain and his cries."
Ford steps in front of the group and says, "Hystos we meant no harm we only killed him to save this world we took no pleasure in his pain we only wanted to live."
Behind him Dipper, the one person paying attention to what she was saying rather than the fancy visuals, facepalms.
Hystos sighs and lets go of Stan's throat while leaving him in a position to where he can still see all the party goers. "The line between naivety and stupidness is almost invisible." Hystos's body begins to slowly contort out of the shape of a human female and more into that of a beast. "So close your hearts the world is dark and."
"Mercy is hell."
Her body finishes contorting into a 6 legged beast with a long neck, spines in addition to wings, and fangs made of rusted knives.
"Die."
Lunging forward Hystos bites down on Ford's throat and rips it out causing his blood to fly onto the ground while his head remains attached by a small fraction of his skin.
Turning towards Old Man McGucket, Hystos twists her head and all the sudden Old Man McGucket's beard wraps around his throat and after a few seconds of stuggle a loud CRACK can be heard and he drops to the floor lifeless.
Finally snapping out of her small trance Wendy starts to charge at Hystos, her axe raised, however with a small exertion of her will Wendy's hair catches on fire quickly fully engulfing her body leaving her body a charred husk.
Glancing at each other Robbie, Thompson, Tambry, Lee, and Nate all, wisely, decide to run away.
Within less than a second Hystos appears in the middle of them, spreading her wings and bisecting all of them, "Tsk tsk cowards get a painful death." Hystos says her eyes glowing as her blade-like feathers quickly turn upward.
Wendy's group of friends all unleash short but terrifying blood curdling screams as blades travel up their body as they finally exit through their mouth leaving the group looking like an odd modern art statue.
This postmortem torture lasts only a short time however as Hystos's head snaps 180 degrees around and stares at Soos.
Lunging forward, and yanking the feathers out of the corpses leaving their entrails spewed across the ground, she tackles Soos to the ground.
With a dark smile she sinks her claws into Soos abdomen and, much like a dog digging a hole in the ground, tears through Soos until his body is no more than an empty cavity of skin.
Quickly turning she grabs Gideon and simply swallows him whole and licked her lips with a long forked tongue.
"Please stop this," Stan shouts at the top of his lungs drawing Hystos's attention allowing for Pacifica, Dipper, and Mabel to start running and Dipper quickly grabs something out of Ford's jacket.
Standing on her hind two legs she stares at Stan and laughs saying, "Not a chance in hell. I am simply fulfilling the promise of my friend. They will be the ones who pay for your sin, Stanley Pines."
An unholy smile lights up her face as she asks, "Now then which of them do you want to die first?"
Mabel, Dipper, and Pacifica run past tree after tree trying to get away from the Mystery Shack.
"Who the hell is that," Pacifica pants as they run.
Dipper quickly pulls Mabel and Pacifica into a nearby cave as Hystos runs past their hiding place dragging Stan with her.
"Let me check the notes," Dipper says, scrambling to grab the notes from his back pocket.
"Always with the notes," Mabel jokes slightly, causing them to glare at her. "What just trying to relieve the stress."
Dipper scrolls through the notes he and Ford made on the creatures of the different realms.
Teeth
Pacifier
Axolotl
Discord
The Sailor
Time Baby
Hystos
"Here we go," Dipper mumbles.
It is unknown whether or not Hystos is real. If she is the as the tales state then any resistance against her is doomed to failure. Having managed to fight and beat many different beings across many dimensions the only potential counters to her are unicorn hair and praying that one of the few beings that can beat her shows up.
This list is unfortunately very limited and consists only of
B̶i̶l̶l̶ C̶i̶p̶h̶e̶r̶ (pretend this is a straight line this is the best I found from any generator)
Axolotl
If this should fail then you have no hope and she is likely sitting directly behind you Dipper staring at you reading this.
"Wait, what?" Dipper says glancing behind him to find absolutely nothing behind him except Pacifica.
"Pacifica…" Dipper says slowly backing away.
"Oh she's been gone for a while," Pacifica says. "I needed some sort of anchor to this plane of reality and she was more than happy to provide it once I offered her what she truly wanted."
"Which is…" Dipper says.
"The people who ruined her family fortune dead and forgotten and her power restored," Pacifica says with a dark smile. "Don't feel bad she made it a long time ago and probably never figured that she'd come to care for one of them. However I care little for the trivial natures of mortals in this matter you're going to die anyway and don't worry Pacifica dear I will make it so you never loved him so you take all the joy in this I'm feeling."
"You monster," Mabel says.
"Of course I am what's your point," Pacifica says. "Now then Stanley, which of them do you want to die first?"
The twins turn around to see Grunkle Stan struggling against the forces of nature to escape and fight as the monstrous body of Hystos enters the cave and sits at the entrance.
Hystos long tongue wraps around both of the twins and lifts them into the air closer to Stanley.
"Choose," Pacifica says to Stanley.
"No… we'll… stop… you," Dipper says in between breaths.
"No you won't. Not this time," Pacifica says. "Today you're dead, it's just a matter of who lives longer."
Stan continues to struggle against the invisible force as Pacifica does a facepalm and says, "Oh right I forgot I muted you." And snaps her fingers causing Stan to be able to speak again.
"YOU &/&(&/ ):$2 ! $/$( 2), ! ,& ),7/ & ? !;$:&(& $3$;83!( '1 ;&? &(&/ (&? !3&( &/&? ! I'LL FUCKING KILL YOU!" Stan says.
"Impressive swearing. Unfortunately that means little to me," Pacifica snaps her fingers again, muting him. "In that case Dipper dies first then Mabel."
The forked tongue of Hystos's beastly form slowly slides down Dipper's throat, causing him to start shaking violently, and slowly goes down further and further.
Past his esophagus.
Into his stomach.
Through his intestines.
Before finally stopping and grabbing onto the very end of the large intestines.
And then pulling.
In a sudden explosion of movement Hystos yanks her tongue back out pulling with it the entirety of Dipper's digestive tract with it and spilling it all over the floor of the cave.
As the misshapen corpse of Dipper simply sits there Hystos turns her attention to Mabel.
"You know it's sad really," Pacifica says. "Another world, another time, we could have easily been friends, you and I. Unfortunately, I have to kill you unless you choose to repent for your past sins."
Mabel stares at Dipper's body on the ground and then stares up at Pacifica, "Fuck you."
Pacifica shrugs, "Figured."
Slowly Hystos's tongue slithers around Mabel's body slowly going lower and lower down it before finding its entrance point.
Mabel moans slightly as the forked tongue goes up her Uterus and then splits off and goes down each of her Fallopian tubes before reaching her ovaries.
Then in each of the ovaries the tongue splits into thousands of smaller tongues and slowly touches each of the ovums causing them to shake slightly.
Slowly pulling the tongue out of the female reproductive system it exits and then reenters Hystos's mouth after putting Mabel down.
Mabel meanwhile starts shaking violently as she thrashes back and forth and her body slowly expands before promptly bursting as 500,000 underdeveloped babies promptly explode outward away from Mabel.
Stan looks on in horror as Hystos slowly scoops up all the babies with her tongue and… puts them in a pouch like a kangaroo.
"What they're technically my children," Hystos says as she slowly morphs back into a human looking form, only now one that looks slightly pregnant. "I'm not a complete monster."
Hystos snaps her fingers and drops Stan to the ground looking onward at the corpses of his family.
"Don't worry Stanley," Hystos says leaning next to his ear. "Soon he will be here to punish you."
Stan's eyes widen as he turns around but Hystos and Pacifica are gone.
Slowly humming the rest of the song Hystos and Pacifica walk through the forest.
"Are you okay, dear?" Hystos asks Pacifica.
"Yes, of course, the bastards are finally dead," Pacifica says with a smile on her face.
"That's good dear," Hystos says, putting her arm around Pacifica. "Now then do you want to do the honors?"
"Of course, mother," Pacifica says walking forward towards their destination and shaking its hand.
"Hahahaha! HAHAHAHAHAHAHAHA!"