Disclaimer: I own nothing

redhoodfan here, I am a very big fan of Gravity Falls, so I thought I would give a try at making a fanfic about it, this is my very first try at writing a fanfic, hopefully it will turn out okay. I also want to give a big thanks to Sora Pendragon for helping me and supporting me with this.

Here is some info about my OC:

Character bio:

Name: Nikki Pines

Age: 5

Appearance: Short dark brown hair in a ponytail, brown eyes, wears glasses, red and white striped shirt, brown jacket, a pair of blue pants and white and red sneakers, six fingers on both hands (basically looks like a younger girl version of young Ford from the beginning of Tale of Two Stanleys) crescent moon birthmark on the back of her neck, very small half the size of Dipper and Mabel.

Personality: Extremely smart (basically a genius), looks up to her big sister Mabel and her big brother Dipper, sometimes likes to join Dipper on his adventures of discovering the paranormal, she also likes to knit things with Mabel.

Hobbies: Adventuring, knitting, solving mysteries, playing the violin, ballet, baking, playing games, drawing/sketching, soccer, car/plane racing, and sometimes likes to invent things.

(Also, I'm going to incorporate things from other shows/movies/books in, but they probably won't be used all that much until after the last episode of Gravity Falls)

Prologue

I'm here standing in the middle of a snowy forest at night, can't remember how I got here, but I'm here. I look around and I see a frozen pond between the trees. The light of the full moon is glistening off the ice, so beautiful. I look around, still wondering how I got here, when suddenly I hear a cracking sound coming from the frozen pond. I look and see someone seeming to float out of the ice. It was a boy with white hair and a brown cloak, floating there above the ice, looking at the moon. Then he slowly floats down back onto the ice, the hole he came through freezing back over when he lands back onto the ice. He starts walking, and I dart behind the tree so he doesn't see me, I look back to see him picking up what looked like a shepherds crook. A small flash of white and blue light comes from the middle of the staff, and the boy drops one end, when it hit the ice, frost suddenly appeared. He goes to a couple of trees and taps them with the staff and frost appears there too. He suddenly starts laughing and running across the ice, dragging the staff behind him making more frost across the ice. I found my self laughing along with him. He suddenly flies up into the air, and I lost sight of him. "Whoa." I said looking up where he had disappeared into the sky. I suddenly hear what seemed to be chuckling in the back of my mind, and I move my gaze to the full moon, but I don't know why, or why I hear chuckling. 'Hello little Guardian' I hear in the same voice as the chuckling in the back of my mind. "Huh?" I said. Looking around trying to find the owner of the voice when suddenly…

"Nikki wake up!"

I suddenly jolt awake, looking around to see a nearly empty bus. I wonder why I'm on a bus, but then I remember our parents sending my older brother and older sister and I to Gravity Falls, Oregon to stay with our Great Uncle Stan for the Summer.

"You okay?" I look to my right and see my big brother Dipper looking at me worriedly. "You were mumbling in your sleep."

"Yeah, I'm okay. Just a dream."

"Did you have a nightmare?" I look to my left and see my big sister Mabel.

"No, it was a little weird though. Are we almost there?"

Just as I ask, the bus slows to a stop, and the driver announces that we had arrived at Gravity Falls.

We got up and collected our luggage and belongings and exited the bus, and went outside the bus depot, and looked around trying to find our Great Uncle.

"Wasn't he supposed to meet us here?" I asked, tugging at Dippers vest to get his attention.

"Yeah, wonder where he is?"

I suddenly almost tripped and looked down to see my shoelaces untied, I stoop down to tie them, hearing a car pull up next to us. I glance up and see a red convertible, I look at the license plate and see STNLYMBL written on it. I assume this is our uncle. Though I'm confused why it said Stanley on the tag considering our great uncle's name is Stanford not Stanley.

"Hey, are you two Dipper and Mabel?" I hear a gruff voice say, I look up again and I see a man get out of the car, he was wearing a suit had a red fez on top of his head and wearing glasses, although for some reason he had an eye patch over one of the lenses, don't know why, since when he lifted it up to get a closer look at Dipper and Mabel, both his eyes seemed fine.

"Yeah" I hear Mabel say. "Are you our Grunkle Stan?"

"Yep, that's me, although, aren't there supposed to be three of you? Your little sister, Nikki right?"

I look up, wondering why he hadn't seen me, I may be small but not that small, and notice that I was behind one of Mabel's suitcases.

I stand up and walk around the suitcase saying, "I'm here."

Grunkle Stan looks over at me, and his eyes widen and stumbles back against his car. "Hot Belgian Waffles!"

I jump at his reaction, wondering why he was acting this way, I stepped toward him holding out my hand asking. "Are you okay?"

He looked at my hand and his eyes widened even further, I stopped and put my hands behind my back, I get very self conscious about my six fingered hands, having gotten teased and bullied about them many times before.

"No no no." I jump again hearing Grunkle Stan suddenly talking fast, I look up seeing him shake his head, kneeling down in front of me. "You don't have to hide your hands, you just startled me is all kid, you practically came out of nowhere." He said chuckling, ruffling my hair. "Though, where did you get that shirt and jacket from?" he asked, looking down at my red and white shirt and brown jacket.

Mabel spoke up. "She found them in the attic and liked them, mom and dad didn't say anything, so she wears them."

"Alright then, we better get going." Grunkle Stan said standing up, and opening the trunk for us to put our luggage and belongings in. Then Dipper, Mabel, and I got into the back seat as Grunkle Stan got in the front and started driving. We eventually pull up to a building that had a sign on the top that read 'MYSTERY SHACK'.

"What are we doing at a tourist trap Grunkle Stan?" asked Dipper as we got out of the car.

"This is where I live. You two are gonna help out around the Gift Shop while you're here, your sisters too young to help yet." Said Grunkle Stan pointing at Dipper and Mabel as he started to walk towards a door with a sign that said 'GIFTS' over it, we followed him and came into the gift shop of the Mystery Shack and followed him through it to what looked like a living room. "Your room is upstairs in the attic, go on up and unpack." He said taking off his suit jacket, hanging it up and then sitting in the armchair in front of the tv.

We went up the stairs to the attic, where we saw three beds in the room against a wall that had a triangle shaped window, Mabel went to the one on the right and started unpacking, I went to the bed in the middle under the window and started unpacking as well as Dipper looked around.

"This attic is amazing, check out all my splinters!" I heard Mabel say, and I looked up seeing that when she was putting up posters she had gotten a lot of splinters in her hands.

I winced. "That looks really painful."

I heard a bleating and turned around the same time Dipper did to see a goat on his bed. "And there's a goat on my bed." He said.

"How did we not see him when we came in?" I asked as Mabel walked by me towards the goat.

"Hey friend." She said. Then the goat started chewing on the sleeve of her sweater. "Oh, yes you can keep chewing on my sweater." She said laughing.

It is going to be one interesting summer with Grunkle Stan.