The camera flickered on, revealing (y/n) in her shed, her face REALLY close to the camera lens.

"Is this thing on?" she said to it, as she tried to attach the camera to its tripod. Thinking she had finally figured it out, she stepped backward so that the camera could see her entire top half.

"Testing testing, one two three..."

The camera suddenly fell from the tripod, and landed on the ground, recording (y/n)'s cargo boots from a sideways perspective as she made her way over towards it.

"Well, that's not it."

A few hours later, (y/n) turned on the camera once again, and took several steps backwards with her hands on her hips as she admired her handiwork proudly.

"That's much better" she said, as she tossed a roll of duct tape into the air with one hand. "Duct tape really can fix everything."

She tossed the roll of duct tape into the air one last time, only for the roll to crash right through the wooden ceiling of the shed, creating a new hole where rain from outside was already starting to pour through.

(y/n) turned her attention back towards the camera.

"I'll fix that later. Anyways, today is (y/n)'s guide to...the mystery ray!"

She panned the camera to the side, revealing a massive blaster of some sort sitting on a wooden chair.

"What does it do, you ask?" she said. "That's a very good question...that I don't really have answer to. But we're about to find out with the help of a volunteer guinea pig..."

(y/n) walked up to Mabel, who was chasing Waddles around outside the Mystery Shack.

"Hey, Mabel!" she said cheerfully. "I was wondering if you'd like to-"

"Nope!" Mabel interrupted as she ran right past her sister, knowing exactly what she was going to ask.

(y/n) walked up to Dipper, who was sitting on the counter reading Journal #3 in the gift shop.

"Hiyya, Dipper!" she said charmingly. "How would you like the honor of being my-"

"No" Dipper interrupted, not even looking up from the book.

(y/n) walked up to Stan, who was watching TV in the living room. She opened her mouth, about to ask him the same question.

"Not gonna happen" Stan said, before she could even speak. He took a long sip from his Pitt cola.

"Aw, come on!"

"...which is me" (y/n) finished, addressing the camera back in the present time in her shed. "Ok, here we go."

She pressed several buttons and flipped a few switches on the mystery ray, which started to whir to life.

(y/n) then took several steps backwards, standing about five feet in front of the mystery ray.

"And now in the ten seconds that it takes for this machine to get warmed up, I will now dictate my will in case this thing happens to be a death ray."

She put her hands behind her back, as if she was dictating something formally.

"To Mabel, I give my emergency stash of cash, located in a watertight lockbox in the attic's toilet tank. You might get a little dirty, but hey three bucks is totally worth digging through endless toilet sludge.

To Dipper...uh..."

(y/n) looked around the room, trying to find a something that would suffice. She reached over towards her working table, and picked up a rather moldy half eaten burrito.

"...you can have my leftover burrito. Don't worry, it's only two months old. Still edible!"

To demonstrate, she took a bite out of it, a disgusted expression appearing on her face as she tried to make it look like she was actually enjoying it before forcing herself to swallow.

Suddenly, the mystery ray powered on, and fired a green ray directly into (y/n)'s chest.

She screamed in agony and dropped the burrito, her body glowing a bright green color before she collapsed to the ground.

Her body was smoking as she extended a shaky arm outwards, using it to help pick herself up off the ground with her back facing the camera.

"I feel...stronger, smarter...powerful."

Without warning, she suddenly started to laugh, a horrible, wicked laugh that reverberated off the walls of the tiny shed as she turned around to finally face the camera.

She suddenly stopped, and looked at the camera's lens.

"Whoa, that must have been the burrito talking" she said, clutching her stomach a little.

She then reached down, and picked up a clipboard with a piece of paper attached to it. She started to write down several of her observations.

"Now let's see. Eyesight: normal. Hearing: normal. Unusual body elongations or extensions..."

(y/n) looked down at her body.

"...none. Additional notes: a sudden urge to conquer Gravity Falls and then the rest of this miserable planet."

A wicked expression appeared on her face and a greedy smirk crossed over her features as she wrote that last part down.

Then, the expression suddenly vanished, and replaced with a knowing, bored countenance as (y/n) turned to look at the mystery ray.

"Yeah, that's an evil ray..."

(y/n) was still in the shed when the camera turned on again, but this time she looked completely different. Her hair was disheveled and stuck out in many directions, and she was wearing a tattered white lab coat with oil stains, black gloves, and a pair of science goggles over her eyes.

Her back was turned to the camera as she was working on yet another machine, except this one was of massive size. It was so tall that it actually went through the roof, right through the hole that (y/n) had made in the ceiling a few minutes ago.

"Yes, yes, yes!" she said, her voice rising with mad excitement as she finished up the last touches on the machine. "It is finished!"

She pressed the activation button on the panel, and the machine whirred to life, pure white electricity surging throughout the entire invention as the rain outside poured even louder and pounded on the sides of the shed.

(y/n) stood up and took a few steps to admire her work proudly. She pushed the goggles onto her head, revealing eyes that were filled with madness.

There was an electronic bar on the side of the machine, and the light was currently at the very bottom of it, but it was slowly rising higher.

"Once the machine reaches maximum power, I will make the nightmares of every single citizen in this town a reality, and I will rule over Gravity Falls! Then, the world will kneel at my feet!"

A bone-chilling, ear-piercing, triumphant shriek of laughter erupted from her throat, lightning flashed across the sky and thunder shook the ground from the storm outside.

Her cackling was suddenly cut off by a fit of coughing. She put a hand over her mouth during her coughing fit before it finally stopped.

"Man, all this evil laughing is really killing my throat."

Suddenly, the door to the shed was flung open, and (y/n) turned to see Dipper and Mabel, standing with equally determined expressions on their faces.

"(y/n)!" Dipper shouted over the howling wind. "You have to stop!"

"What?" (y/n) shouted back, putting a hand behind one of her ears and leaning closer so that she could hear him over the storm.

Dipper took in a deep breath, and started to scream at the top of his lungs.

"I SAID, YOU HAVE TO STOOOO..."

Mabel shut the door so that the storm wasn't nearly as loud.

But Dipper was still in mid-shout.

"...OOOP!"

(y/n) yelped in pain at his shrieking, high-pitched screaming, and covered her ears.

"Oh great, now my ear drums hurt as well as my throat."

When she had gotten her hearing back, she looked back at her siblings with a malicious grin.

"Well, you're too late!" she cried, gesturing towards the energy level bar on the machine. It was about halfway up. "Once my machine is at maximum power, it will give make everyone's worst nightmares come to life, and I will rule supreme over all the raging chaos!"

But neither Dipper or Mabel looked remotely surprised.

"You invented an evil ray and shot yourself with it, didn't you?" said Dipper.

"Yeah, that sounds about right" Mabel added, before turning towards her brother. "How long do you think it'll last this time?"

"If it's anything like last time, about ten minutes" said Dipper. "For now, let's destroy the doomsday device before we get charged for overuse of electricity...again."

(y/n) stepped up and puffed up her chest.

"I'd like to see you try, but if you wanna get to the machine, you'll have to go through me first!"

Dipper threw a punch at her, aimed at her stomach, but his fist went right through her body and out the other end.

(y/n) grinned.

"And by that, I mean quite literally."

She phased off of his arm, before turning off the intangibility belt, and taking out the plasma gun from her tool belt and activating it, the light from the electricity illuminating half of her face as she glared at him with a dark expression.

Dipper looked up at her.

"I'm pretty sure that this is the part when I run."

While Dipper was screaming as (y/n) chased him, dodging her plasma blasts that missed him only by a few inches, Mabel was making her way towards the doomsday device to try and find a way to shut it down.

However, the corner of her eye, (y/n) noticed.

"Not so fast!" she said, pulling the net gun out of her toolbelt and firing at her sister.

Mabel cried out in surprise as the net entangled her body, pinning her to the shed wall.

Dipper tackled (y/n) to the side, initiating their fighting once again.

He managed to grab the plasma device and throw it across the ground, out of her reach, only for her to pull out another blaster from her toolbelt.

She pulled the trigger, and a tennis ball was launched out the end of it.

(y/n) was a bit disappointed at first, until it hit Dipper square on the cheek. He yelped in pain, rubbing the spot where she had hit him, which was starting to turn a bright red color.

"Hey, careful with that thing!" he scolded. "You could seriously hurt someone with that!"

She looked at him cautiously.

"You're saying that...hurt?"

"More than you think it did!"

A wicked sneer flashed across (y/n)'s features, as she held the tennis ball gun up.

"Then I will keep shooting you with them! Quiver in your boots at the sight of my tennis balls of death!"

Dipper pushed a table down, and then ducked behind it as she started to fire tennis balls at him at a rapid rate, wondering how long it would take for the evil ray to wear off.

Meanwhile, Mabel was still struggling in the net. It appeared that squirming only made the net get more tangled around her body.

The storm continued to rage outside, and droplets were now pounding loudly against the shed doors.

Mabel growled in frustration.

"OH, WOULD YOU SHUT UP SO I CAN ACTUALLY HEAR MY OWN THOUGHTS?" she screamed at the storm.

She took in a sharp inhale, holding her breath until her face turned a bright red color, before finally exhaling. The anger had worn off.

"If only I had something sharp that I could use to cut this dumb net."

She suddenly gasped in realization, as an idea started to form in her quirky mind.

Dipper was still taking cover behind the table as it was getting pounded with tennis balls.

"Okay, Dipper" he said to himself. "This isn't gonna last for long. Gotta think of a new plan. New plan, new plan..."

The thunder roared outside, interrupting his train of thought.

"Ugh! Why does it always have to rain whenever things get intense?"

It was then that he noticed that the pounding of tennis balls against the table had actually stopped. Now was his chance to do something.

Cautiously, he peeked his head over the table.

(y/n) had vanished.

He looked around cautiously, and he had a keen feeling that someone was standing directly behind him.

"I know you're probably behind me right now, (y/n)" said Dipper, as he started to slowly turn around.

"So just attack me already and get it over with!"

"Oh, but what fun would that be?" said (y/n), and Dipper turned around to see that she was actually standing right in front of him, just behind the table. She had been ducking in front of the table when he had looked around the room, underneath his line of vision.

She took out another blaster-like device, and fired, a ray of pure heat melting the table directly down the middle as she started to walk slowly towards him, her eyes filled with the same dark malice that was dripping from her voice.

"You can't beat me, you know" she said with a wicked sneer. "I'm stronger, smarter, more powerful than you are or will ever be."

As she walked closer to him, Dipper took more steps away from her, his face paling a little.

"I can invent anything I can possibly imagine, and with each second, I grow more powerful."

She eventually backed him up into a corner, and she slammed her hand against the wall right beside her brother's head, causing him to tremble a little. He looked down at the floor, unable to look into her dark eyes.

"What are you going to do to stop me?"

Dipper finally looked up at her, but there was a smug expression crossed over his features.

"Distract your attention away from your doomsday device" he replied.

(y/n)'s eyes widened, and she whipped her head around.

"What?!"

There was a hole in the net where Mabel had been trapped just a few minutes ago, and Mabel herself was standing right next to the giant doomsday device, pieces of net still caught in her sharp braces.

"Oh sweet, there's a self-destruct button right here!"

She slammed her hand right over the large red button, and the entire device suddenly froze, and electricity stopped sparking along its surface. After a few seconds, the machine started to shake violently, before exploding with a blast of orange heat.

The camera that had been filming the entire thing cut out.

When the camera finally turned back on, all that was left of the doomsday machine was a stain of black blasted ash on the ground and walls. Dipper, Mabel, and (y/n) had all been thrown back from the force of the blast.

Mabel was the first one to get up. She rubbed her head painfully, and noticed Dipper coughing on the ground.

"I've got ya, bro bro" she said, as she grabbed his arm and gently pulled him to his feet.

He looked at her gratefully.

"Thanks, Mabel."

They both turned to see (y/n)'s body lying on the ground, perfectly still.

"(y/n)?" said Dipper cautiously, approaching his sister.

She coughed painfully, and grimaced as she tried to pull herself up off the ground. However, she stumbled, and both of her siblings rushed to her side, each of them taking one of her arms and slinging them across their shoulders as they pulled her up.

"You alright sis?" Mabel asked with a concerned voice. "How are you feeling?"

(y/n) groaned in pain.

"Like I just ate a two month old burrito that I dictated to Dipper in my will" she said in her normal voice.

Mabel grinned.

"I have absolutely no idea what that means, but I'm gonna smile anyways and pretend like I do know."

She hugged (y/n) tightly and Dipper joined in, the three of them wrapped in each other's embrace before finally letting go.

Dipper put his hands on his hips.

"Alright, where's the evil ray that caused his whole mess?" he said.

(y/n) simply pointed to the corner, where the evil blaster was still sitting on the chair in the corner.

The evil blaster was dumped into the trash can outside the Mystery Shack.

The triplets stood aside proudly, and (y/n) brushed the dirt off her hands.

"You sure that that's safe?" asked Dipper skeptically.

"I'm never sure if it's safe" said (y/n). "No one can ever be 100% sure that anything is completely safe, so it doesn't even technically exist."

"Sounds good enough to me!" Mabel chimed. "Hey, you wanna watch the entire Ducktective series marathon?"

"I've got nothing else to do today" said Dipper.

"Yeah, there's nothing like staring at a screen for forty eight hours straight until your eyeballs pop out of their sockets" said (y/n).

The three of them laughed as they walked into the Mystery Shack one after the other.

Later that night, Soos was taking a bag of trash out of the Mystery Shack.

"Oh man, I sure am glad that that rain finally stopped. Finally, I can hear myself talk again."

Suddenly, thunder echoed throughout the entire town, rattling Soos's ear drums.

"Thunderstorms are usually a sign of something intense about to happen. Should I go back inside and prevent some sort of supposedly unseen disaster from happening?"

He paused to think about that logic, before shrugging.

"Eh, that kind of stuff only happens in cartoons anyways."

As he bent down to drop the trash bag into the trash can, the rain started to pour. The droplets soaked everything, including the evil ray that was sitting in the trash can.

The device sparked, before shooting out one last green ray and shorting out.

The ray hit Soos directly in the face, and he screamed in pain, dropping the trash bag onto the ground.

He fell backwards, and collapsed against the Mystery shack wall, before he looked up again, a dark gleam in his eyes.

"The world will tremble in fear, and give up all of their dinosaur cookies, before Dark Soos!"

He started to laugh evilly, as the lightning flashed in the night sky behind him.

_____________________________________________________________________

Just like I promised, "(y/n)'s Guide to Survival" will also be posted today. Enjoy!