Temple

All was quiet at the abandoned temple, until a large space station came tumbling in a flaming wreck, and smashed the bouldered up entrance to pieces. Not only that, but the craft exploded, awakening it's mystical prisoner:

A large ball of light floated out and emitted a sinister laugh, "Free at last!"

Time Twister Warp Room

A balding man with black hair and goatee and skin so yellow one wouldn't be blamed for thinking he had jaundice, watched apprehensively as the ball of light floated down around him, growling, "None have dared fail the great Uka Uka even once. But you, Cortex, you have failed me TWICE!"

Dr. Neo Cortex clasped his hands together. "Oh great Uka Uka, it was not my fault! It was that infernal bandicoot."

The mad scientist shielded his eyes as his master transformed into his true form: a floating witch doctor's mask. "From deep inside my temple prison, I sent you specific instructions to follow. But you lost the gems," his voice deepened as his anger rose, "you lost the crystals. AND I HAVE LOST MY PATIENCE! THERE IS NOW NO OTHER POWER SOURCE LEFT ON THIS PLANET!"

"I know we've had a few unfortunate…" Cortex didn't know what word to look for, so he picked one randomly, "setbacks."

"And failed!" Uka Uka thundered, "But since your bumbling managed to free me from my prison, I am feeling," here he smiled, "generous. There is still a way to amass the power needed to enslave this miserable planet. And this time," his rare smile faded as a portal opened up behind him, "this time, the great Uka Uka will make sure you do it right!" A portal opened behind him and out of it stepped a man so tall that he practically towered over Cortex...and his assistant Dr. N. Gin...and his former assistant Dr. Nitrus Brio...although if two of them stood on top of each other, then they would be matching his height...oh whatever...anyway, Cortex recognized this man in an instant.

"Dr. N. Tropy," he growled, "I thought I recognized that pneumonia blue skin from somewhere."

"Dr. Neo Cortex," sneered N. Tropy, "that was probably gained from your big head."

"Enough!" Uka Uka thundered. "I did not summon you both here only to trade insults! THat being said, I knew that I could use some more generals, which is why I have taken the liberty of...inviting a few others."

"Inviting?" Cortex didn't like the sound of before he could say any more, four portals opened up, one by one, and six beings flew out. Cortex and N. Tropy had to duck out of the way as Cass, the Bowsers, Ripto, and the two egg scientists crash landed in the middle of the warp room.

"Ah, welcome men," boomed Uka Uka, "how nice of you to drop in." They all got up groaning.

"Where are we," Ripto mumbled, then he noticed the others, "and who the hecks are you freaks?!"

"Like you're one to talk, you reptilian freak." Cass snorted.

"Don't call me a freak!" Ripto snapped,

"Oh please, don't make me laugh." Bowser broke up the short-lived argument. "You're an orange midget with a horn sticking out of your head, so the bird thing is right. You don't have much ground to call us freaks."

"I will have you know that I am a curroway!" Cass snapped at the Koopa king.

"And why do you and Junior over there smell of dragons?" Ripto growled after sniffing the air around Bowser. Bowser's response to that was to stomp on the ground and roar while spewing fire, causing the other two to scream and cower.

"That's telling them, Bowser!" Eggman praised him.

"Ah, Dr. Eggman," Bowser greeted him, "so nice to see you again. How is Metal?"

"Likewise. He is doing well, and he should be after locking me in a storage closet and taking over my operations."

"He seriously did that?"

"Why are you surprised? You rule your kingdom with an iron fist, so no one would dare betray you, whereas I am a mere human."

"Who the heck is that?" They were interrupted by Robotnik who had been staring at the exchange with an open jaw before composing himself. "Better yet, what the heck is that?"

"That is King Bowser, one of my future allies; Bowser, this is my younger self, whom I once teamed up with."

"Ah, so you also have the misfortune of teaming up with a different you," mused Bowser, "I can relate as I also have had a different version of me for a partner."

"You did? What did he look like?"

"He was made of paper."

There was an awkward silence before Eggman and Robotnik burst into roaring laughter. "R-Really? Y-You teamed up w-with someone made of paper?!" Eggman snorted.

"W-What was he going to do?" Robotnik guffawed. "F-Fold himself into a tiny hang glider? A puny shield?" They laughed and laughed and even the others present failed to conceal a few snickers until Bowser grabbed them by the collars (or collar equivalents) and baring his fangs.

"Yes I did, and it was a terrible plan!" Bowser thundered. "Now let's never speak of it again! CAPISCE!?" They all made frantic noises of agreement before he released them.

Uka Uka cleared his throat loudly, catching the other villains' attention. "Now that we've all made friends, let's get down to business." He indicated his human companions as he introduced them. "This is Dr. Nefarious Tropy who is responsible for the very ground we're standing on, this is Dr. Neo Cortex who is responsible for my freedom, and I am the great Uka Uka, the one responsible for all of you being here!"

"Thank you for telling us why you 'generously invited' us here," snarked Cass, "now could you possibly tell us why?"

"Simple, I have brought you all here for a single purpose: to defeat our enemies," Uka Uka grinned, "once and for all."

Bowser snorted. "Sure you have. Hate to break it to you mask head, but some of us have already tried that. I've actually done it twice."

"Me too." Eggman put in.

"Really?" Robotnik asked him.

"Don't get me started on that nutso descendant of mine. He wanted to destroy the world, unlike me."

But Uka Uka was having none of it. "You, Bowser, king of the Koopas, only did so with the intention of double crossing your so-called allies, although admittedly, one of them intended to double cross you. And you, Dr. Ivo 'Eggman' Robotnik, made the mistake of not making sure of your ally's sanity. But fear not, for behold you are in the company of those who can relate to your happenings. Now's a good time to combine our forces, as those that do become a formidable force."

(1)"What are you suggesting?" Ripto demanded.

"I'm suggesting nothing."(1) Uka Uka retorted

"I'm demanding that you all follow my plan and no one will stand in our way. Not Bowser's red plumber; not Eggman's blue hedgehog; not Ripto's purple dragon; not Cass' Tasmanian tiger;" (Cortex shot Cass a surprised look.) "and especially not our own orange bandicoot! Together, we will defeat those annoyances, enslave their miserable planets, and afterwards, NO ONE WILL BE ABLE TO STOP US!" His rousing speech was met with cheers of agreement.

(1)My Little Pony: Friendship isMagic: S9E1.