Congrats to Hourglass Cipher for getting it right. The cipher was the Vigenere cipher. For those who couldn't get it, the message was:

Bill Cipher's brother is a slave,

The unusual sister doesn't Belong.

Will's fate now seems grave,

The Axolotl trusted Wrong.

Don't ask me why I put that, I just thought it was appropriate.

Edit: I reread this chapter and decided to change it. I didn't post anything in the last three days due to those stupid teachers and last minute projects and homework assignments.

Hourglass cipher: glad you like the AU mix. I started reading Reverse Falls fanfics, and I decided to add it into this. Plus I thought it might work well.

(Guest) Kanto girl: glad you like it!

Sorry. Story starts now! (I'll see you in Magellan Castle!)

"I have no clue how we got here, but they poked me and then you came crashing through the forest out of control," Raven said.

They heard gasping noises coming in Mabel's direction. She did still have gills, and mermaids need water, not all the time, but they need it in order to live.

"Does she have asthma?" The Gideon imposter said.

"Nope," Raven said as she pulled Pacifica to Mabel.

Raven then reached into her bag and pulled out a canteen of water that had "Mabel" written on it in Sharpie. Gideon was about to perform CPR when Raven emptied the canteen on Mabel's face and neck.

"Your going to drown her!" The other Pacifica yelled.

Within the course of one minute (and some arguing)

Mabel stopped gasping for (air?) and started to wake up.

"Raven? What happened?" Mabel asked softly.

"That's what we're trying to figure out," Raven replied.

Dipper woke up with a slap on the back from Mabel, and he seemed the most freaked out of all of them. He couldn't understand how Gideon was not a gnome and why he had Dipper's style. The two strangers decided to take them to their house, because they wanted a place private to talk.

After a confusing walk, the group reached the other version of the Mystery Shack. A goth Wendy let them in without question, and they walked up to the attic. Raven fixed a little no-role barrier and grew the hamster ball to human sise. She never poured out the water, and that grew with the ball. They looked at her weird until Mabel revealed her gills to them, She climbed up the ball to the hatch put her legs in and took off the necklace. Her tail immediately formed and the jumped in.

"Do all you have that?" The other Gideon asked.

"Yes. Though Mabel is the only aquatic one," Raven said.

"Do you..." the other Gideon trailed off, unsure if this was a sensitive topic.

A look from Dipper said the necklace was on to long. They both pulled of the necklaces and the other two looked startled that they were both cervitars.

"Is this weird? Is this too weird?" Raven asked, sounding like Jeff on thier first day in the Falls.

"No. By now we're used to it. This is one strange town," The other Gideon said.

"Ditto! Hey Dipstick, should we tell them?" Raven asked.

"Tell us what?" The two asked.

"That this only happened yesterday," Dipper said, gesturing towed his deer half.

"What?!?" They said at the same time, with eyes mimicking a bug.

"Yup. And on our second day back in the Falls," Mabel said.

"How is this possible? There isn't anything written down?" The other Gideon said, pulling his version of the Journal.

"Your not going to find it. He said he found it his first day, but it vanished. The research on the river that turned us would be incomplete if it was there," Raven said.

"Wait, did you meat the author of the Journals?" Gideon's voice rose like Dipper's when he first found out about the author.

"He's our great uncle!" Mabel exclaimed.

"What!" The two yelled, shocked.

"I know right! And when he was explaining is mysterious backstory, Dipper went a fangirl when he started explaining she Journals!" Raven said.

"Raven, I thought we-" Dipper got cut off

"Lamby Dance," She said.

"Now is not the time to talk about the Lamby dance," he said, embarrassed.

"What's a Lamby dance?" The other Pacifica asked.

"Just a dance our parents made Dipper do when we were little. I think I have a photo somewhere...Yup," Raven said, as she pulled the photo out of her bag.

The two kids looked at it and laughed, while Dipper's face was bright red. "Really Raven. You had to do that," he said.

"What? I had to lighten the mood somehow," Raven replied. "I'm sorry. But you need to not always take things so seriously. Mom and Dad stopped making you do the dance three years ago. Isn't that enough?"

"I guess. But remember, your birthday is in three days," he said.

"Your birthday is June Tenth?," Gideon said.

"No. It's the seventh," Raven corrected him gently. He still looked nervous about having two cervitaurs, a mermaid, and a Gorgon in his room.

"Then today's your birthday," the other Pacifica said.

"Really! Yes! Now I'm fourteen!!" Raven exclaimed.

Back at the clearing...

"Mason, are you sure this is where that reading was?" The female cloaked figure said.

"Yes Mabel. Look, evidence of paranormal activity: a damp spot in the dirt making the outline of a head, flattened grass, and evidence of a fight with a Gorgon. Whatever was here left, but they couldn't have gone far," the other figure said.

"Do you think those stupid friends found whatever it is first?," the girl asked.

"It's possible," the boy replied.

Can anyone give me something to call the Reverse Pacifica? I can't think of anything smart.

While I was writing I got a small case of writers block, so I decided to rewatch The Inconvenceing to get an idea, so I added the Lamby Dance! :P

Good luck solving this!

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