Back To Gravity Falls: Beware the Beast (Multiverse Crossover)

The Breakfast Club

Full chapter name: The Breakfast Club (ft. Two Old Men and a Surprise)
...

With breakfast done, the Mystery Kids took the bags of books to the living room and each took a book. Sitting at various spots in the room, they began to read (or in Wybie's case, skim-with-purpose).

Gregg watched cartoons quietly, listening to the sighs and turning of pages beside him. Wirt was cleaning the upstairs bedrooms so the kids could spread out and each get their own room, despite having the gut feeling that they would still want to stay together regardless.

Norman was the first to finish a book, tossing it on the table and letting out an exasperated groan, "This is useless. Hyle has to know more than she's letting on, we will make no progress this way!"

Mabel scoffed, not looking up from her book, "What would she have to gain by lying to us, Norman?"

"I don't know, maybe she's in kahoots with it!" Norman put his face in his hands and screamed into them, muttering to himself. "At least with the witch I knew what I was up against..."

"What are we, chopped liver?" Coraline nudged Norman with her foot. "We're all in this, we all have to deal with this."

After a couple of minutes there was a subdued knock at the front door, Wybie got up to answer it and after some quiet words exchanged, looked at the others with an odd look on his face.

"Some old guys are here looking for the twins." Wybie announced, Dipper and Mabel sharing a glance.

"Damn, kid, did no one teach you manners?" A gruff voice chided.

"Where is Dipper and Mabel?" Another voice followed.

"Grunkle Stan? Grunkle Ford?" Dipper jumped up, followed by Mabel who tackled their great-uncles with a hug.

"We took a plane, believe it or not. Good on you, Dipper, for paying extra for express delivery." Ford rubbed Dipper's head.

"Aren't you a sight for sore eyes?" Stan smiled at Mabel, then his smile fell. "We were actually on our way back but we got your letter and took a plane instead. We heard from Soos about a strange death and it seemed... supernatural... so we were trying to come back, but when we realized you kids were here again... Yeah. So here we are."

"So what are we hunting down, exactly?" Stan asked, noticing all the other kids in the room waved half-heartedly and stepped inside.

"Your guess is as good as ours, honestly." Norman sighed, laying his head down on a book in defeat.

"Your motivation is inspiring." Stan deadpanned, "Let's get you kids out of the house for a while, we'll talk somewhere."

"We're under house arrest." Wybie interjected, leaning up against the front door. "Can't."

"You'll be safe with us," Ford assured. "It will only be for a little while. Where is your caretaker?"

"Wirt, he's my cousin, he's in charge of Coraline and Wybie too. He's upstairs."

"And you are?"

"I'm Gregg." Gregg responded.

"My name is Norman," he smiled at Gregg who was grinning to himself. "Gregg is my cousin too."

The uncles nodded to themselves and Ford headed upstairs while Stan stayed with the group.

"So what direction are we going in with this?"

"We know it's doglike and likes tearing people apart." Mabel responded, "That's about it."

"Do we know if it actually ate anyone?" Stan asked.