Far, far out in the vast reaches of space, on dead planet unknown to most, trouble was aloft. A convention of some kind was occurring down on the rocky planet that seemed to be filled with undesirable characters, many of which were familiar to anyone who's watched Gravity Falls. Among the group of monsters, their leader, Bill Cipher, was looking over them all from a throne he had gotten them to make as they all waited on some important guests to arrive. He wasn't exactly sure whom he'd meet; only that it was supposed to be a life changing experience for him and for all who decided to attend.
There was a loud cracking sound, and in a flash of orange flames a figure appeared. There was the rattling of scales over ground as a large dragon walked into view. His irises glowed bright orange, while his pupils glowed purple. His scales were dark purple, and shimmering on them were multiple different spells in languages from all across the multiverse.
"A pleasure to make your acquaintance, Bill Cipher." The dragon growled, his eyes focused on the figure on the throne.
"And I suppose you're some Multiverse god or something?" Cipher remarked, then laughed. "I'm just kidding. I know exactly who you are, Atlantia. Pleased to make your acquaintance as well, and hats off to you!"
Cipher took off his hat while speaking and it caused the entire landscape to tip with it until he put it back on. He then looked around and said, "Hmm... not many have arrived yet, have they?"
"I am sure they will come soon," Atlantia growled, as a hieroglyphic symbol flashed into existence on a scale on his neck for a split second before vanishing. "I just hope this was worth my time. I'm risking a lot being here."
As if on cue, two portals appeared, one having sand fly out of it, and the other from the ground. From the one on the ground rose a massive blood-red snake appeared towering over all of them, including Atlantia himself. The one from the sand portal was apparently a human of some kind, more specifically an Egyptian magician who was grinning like a fool.
"Ah, there you are!" Cipher greeted. "Crazy Magician, and Spirit of Evil. So glad you could make it!"
"Almost couldn't," the magician, Setne, announced, brushing sand from off of himself. "Traffic was absolute murder today. Were it not for that spell you gifted me Cipher, I would never have escaped that snow globe on my own."
"Speak for yourself," the snake, Apophis, stated with a hiss. "I may have been banished, but like the gods themselves I eventually was allowed to return."
Altantia frowned slightly as he thought to himself, and multiple spells in Egyptian hieroglyphs, greeks letters, and runes shimmered across his scales.
"So far we have a chaotic demon, myself, a Multiversal god, a crazy Egyptian magician, and the spirit of evil." The dragon growled. "I am curious to see where this is going."
"Ah... the greatest of minds all together in one place," Cipher commented. Just then, there was the sound of a cell phone ringing and he pulled out one and answered it. "Hello? Oh, hey there! What?! Hmm... that does complicate things. Okay, I'll let him know." He hung up the phone and turned to Altantia. "Bad news. It seems not all of them are able to make it at once. We'll have one coming in pretty soon, but the others will be delayed due to eyes watching them like hawks."
"Guardians?" Atlantia growled, his eyes narrowing.
"Unfortunately, yes," Cipher agreed.
"Well, that certainly puts a damper on things," Setne commented.
"So, who's the next one?" Apophis asked.
"Why don't you ask him yourself?" Cipher suggested, pointing behind them where a figure appeared that was not even half Setne's height. He had arrived so silently, they hadn't even noticed his arrival.
"What is this I hear?" the Mobian spirit known as Mephiles asked with some sarcasm at first. "A plot against those who have disgraced us over the years? Where do I sign up?"
"A little shrimpy, isn't he?" Setne inquired.
"Sometimes, the smallest are the ones not to be messed with," Atlantia said.
"And I have proven that time and time again," Mephiles confirmed. "Now, since our other acquaintances are unable to make it for the time being, what's the plan, boss?"
"Yeah, you should explain it now while you still have time to," Cipher agreed. "I can relay the message to the rest of them later."
Atlantia grinned wickedly as he chuckled.
"We have suffered to long under the Guardians of Existence," The dragon growled. "I, for one, would like to regain the control over the multiverse I had before the Guardians rose up against me and sent me into hiding. We must eradicate their order once and for all!"
Setne gave this a thought, then remarked, "Well, I agree that there could be a little less of their influence in things."
"Whoa, one second!" Cipher exclaimed. "You realize how tall an order this is to be asking?"
"You ask the wrong question, demon," Mephiles remarked. "For in one way or another, we are all aware of the risk."
"Either have some nerve, or don't be here." Atlantia growled, focusing his glowing eyes on the demon.
"Well excuse me if I've had a bad experience with one," Cipher growled.
"Correct me if I'm wrong, which I'm probably not, but you've had dealing with two, not one," Atlantia growled.
Cipher's eye widened at the remark, then answered, "Point taken."
"Enough of banter then," Apophis said. "What's our first step?"
"Why not establish a base or throne here?" Setne suggested.
"A central base of operations... For a crazed human, you have some sanity left in you yet, magician," Mephiles stated.
"Setne is just being Setne," Atlantia hissed. "Tried to set up a throne in Rockaway beach and had your behind handed to you, didn't you Egyptian? I thought you got trapped in a snow globe by a teenage boy."
Setne scowled. "Carter Kane and his friend, Percy Jackson, are not forces to judge lightly. I just learned that too late."
"We use our mistakes to try and improve the next time we're up against our foes," Mephiles said. "It's how one grows stronger."
Atlantia nodded and then narrowed his eyes.
"I must go now." The dragon growled. "Make sure they do not discover this place."
With that, he vanished in a blast of orange fire. Cipher waited for him to leave, then turned to his henchmen.
"Alright everyone!" he called. "Make this place look presentable and make sure no one against us can find it!" He got an evil smirk in his eye. "We're about to have some real fun..."
In one of the multiple worlds of Equestria, a girl with brown hair and emerald eyes suddenly looked up from where she sat meditating. The Guardian of Order, Jules, took a deep breath.
"We have to come back together," She said, before vanishing in a flash of white light.