It was a normal day in Gravity Falls, Oregon… well, as normal as it could get with Mystery Twins Dipper and Mabel roaming the streets.

Mabel, an over optimistic, sweater-wearing 12-year-old, gave her brother a braces filled smile and pointed up at the sky. "Look, Dipping Sauce, a hawk!"

Dipper, a paranoid, 12-year-old boy with brown hair and a blue and white cap, shrugged. "Mabel, don't call me that. And it's a hawk, not a Cursed Door. That's what we're looking for, remember?"

Mabel slouched, wrinkling her beautiful pink sweater with red hearts. "Why are we looking for a door in the forest?"

Dipper froze. Why were they looking for a door in the forest? He blushed and looked away. "Uh… we're not…"

"HA!" his twin laughed. "I was ri-ight! You were wr-rong!"

The younger Pines twin rolled his eyes and continued on his merry way. Instead, he told his sister they were searching for the Gnomes again. Mabel, seeking vengeance on the pointy hatted little freaks, nodded and skipped in circles around her brother.

"AHH!"

CRACK!

"OWW!"

Dipper turned his head. "Mabel, was that you?"

Mabel was smiling at him. "I was going to ask you the same thing! We are so insane!"

"I don't scream like a girl," Dipper huffed before running toward the female voice. Mabel was quick to follow.

The twins hid behind a bush. In front of them was an angry blonde girl with light brown eyes, kicking a tree. She had on a leather jacket and boots, with black pants and a white shirt. She wore a chain around her neck and had a bracelet with spikes on it. The girl was yelling at the tree, telling the oak it was stupid.

"What do we do?" Mabel asked.

Dipper shrugged and watched the girl grip her foot and hop around in pain. "I don't know."

"But Dipping Sauce, you always have a plan!" she whined.

"Give it a sec, Mabes." His twin assured her.

They watched the girl continue to yell at the tree. Obviously, she had anger issues. The twins made mental notes not to get her angry. It seemed impossible for her to yell at in inanimate object. Finally, the girl sank down in defeat and put her head in her knees.

"Aw, I'll never be able to do this if I just stand around yelling at trees all day." She sighed. "Gotta find them."

Mabel jumped out of their hiding place. Dipper tried to stop her, but the peppy girl dragged him right along. Both were exposed to the girl, who was staring at them in confusion. The confusion slowly turned to anger.

"Who," she demanded, not getting up, "are you?"

Mabel pushed her brother off of her and hugged the girl. She shifted, seemingly uncomfortable. Mabel only hugged her tighter.

"Don't worry, little Tree Hater!" the Pines girl cried. "I'm sure you can do whatever-it-is-you-want-to-do!"

"Who are you?" she asked again, trying to pry Mabel off of her.

"Oh, I'm Mabel! That's my twin brother Dipper! I like sparkles and sweaters and vampires and I have a pet pig named Waddles! Dipper is younger and shorter and is really good at chess!"

"Mabel?" her eyes fell on Dipper, who was blushing at Mabel's explanation. "Dipper?" Her eyes went back to Mabel. "You wouldn't happen to be the Pines twins, would you? Currently living with your great-uncle, uh, 'Grunkle' Stan and with co-workers Soos and Wendy. Enemies include Gideon Charles Gleeful, Pacifica Northwest, the Manataurs, the Gnomes, Wax Figures, et cetera?"

The twins exchanged nervous glances. "Uh… no…" Dipper grumbled. "Who are you?"

The girl stood up and put her hands on her little waist. "Me? I'm your worst nightmare. I'm the girl who will build you up just to tear you down in the end. I'm the girl who will," she took out a knife and dashed to Dipper, putting the blade to his neck, "slit your throat if you tell my secrets."

Mabel pried the girl off of him. She put the dagger away, hidden in her jacket.

Dipper rubbed his throat. "Okay," he squeaked. "What's your name?"

The girls' eyes widened, making her look innocent. Dipper raised an eyebrow, comparing her to how he and his sister looked on Summer/Halloween.

"My name," she said, placing her hands in her pockets, "is Joy."

Sorry, no other peoples OC's yet. Next chapter or chapter after that. Still lookin for s'more… mmm… boys and another girl! You can submit as many as you want! Also, more info may be needed. Need more than first name and possibly more on how they act; more Mabel-y or Dipper-y or Joy…y or whatevs. Read and Review! LOVE YOU ALL!