AO3'S DOWN QUICK POST SELF-INDULGENT CROSSOVERS INTO TUMBLR TO FILL THE VOID
I'LL START
yeah looks like it went back up while i was formatting this lmao. however i am in too deep. kirby-teetle friendship be upon ye!
Donny frowned and tapped at his keyboard. "Well, that's a bit strange."
"Whatcha talking about, Don?" Raph looked up from where he was beating the training dummy within an inch of its nonexistent life.
"I'm getting an odd energy reading on my spatial-temporal sensors," Donny said. "I set them up after we met those Turtle Power guys: just to keep an eye on the multiverse, so to speak. Don't want any other Shredders coming out of the woodwork."
"You can say that again." Raph slid his sais into his belt and strode over, leaning on the back of Donny's chair. "What're they picking up on?"
"It's…not any of the dimensions we've been to before," Donny said at length, leaning closer to his monitors in concentration. "It doesn't even look like it's got much in common with any of our dimensions at all!"
"Y'think it's dangerous?" asked Raph lowly.
"I'm not sure…" Donny's frown deepened, and his fingers flew over the keys.
On-screen, a series of long, complicated numbers flashed by before being replaced by a low-resolution video feed of-
"Donny, I think we're gonna need more pixels on that thing," Raph remarked. "It just looks like a ball."
"A ball with feet?" Donny countered. "I think all the pixels in the world couldn't change that."
The ball seemed to be tumbling uncontrollably through some kind of space between spaces, along with several other creatures of roughly the same shape and size and even more bits of wreckage and debris.
Then some kind of portal- namely, an electricity-based portal that looked immediately familiar to Donny, rather than the star-shaped portals scattered throughout the in-between space on-screen- tore itself open next to the ball and one of the other creatures-
-and a matching portal opened up just a few yards away from Donny and Raph, spitting out a spear that embedded itself in the floor.
Donny squawked, and Raph shouted, but there was nothing either of them could do to stop the two creatures from falling through the portal and landing square in the middle of the lair, mere moments before the portal slammed shut again.
Donny quickly made sure his systems were recording every possible scrap of information, then got up and ran to the two creatures on the ground. "Are you two alright?!"
"Donny, be careful-!"
The two creatures were small, only coming up a few inches above Donny's waist, but what they lacked in height, they made up for in utter roundness. The pink one made a high-pitched, woozy noise and slowly pulled their face from the ground, while their companion in what looked like a blue bandana made a frustrated 'wahwahwah' into the floor.
Donny blinked.
The pink ball creature blinked back, eyes big, blue, and curious.
"Hello there," said Donny carefully. "Do you understand what I'm saying?"
The pink creature tilted their head. "Poy pyupyu payo pi?"
"I'm gonna take that as a 'no,'" Raph decided. Despite his words, Donny could see that Raph was visibly trying not to do anything that might set off the two strangers, and Donny sent off a silent 'thank you' in his direction.
The pink creature turned to look at Raph, only to jump at the sight of their companion on the ground. "Poy?! Bandi! Bandi, poyu!"
The orange creature- "Bandi"?- grumbled wordlessly before sitting upright, rubbing at their head with one nub-hand and tugging the spear free of the ground with the other. "Wada wah wah, kabi."
(How exactly was this one talking without a mouth…?)
Shoving his own curiosity aside for the time being, Donny worried at the edge of his beak, then leaned back into the pink creature's field of view. "You two came through a portal. Do you remember?"
"Popal…?" The pink one frowned thoughtfully.
"Yes, a portal. Hang on-" Donny walked back to his computer station and pulled up the recording he'd gotten of the past few minutes, setting it to play on one of his bigger screens for the strangers' benefit. "We don't really know how, but somehow, a portal opened up while you two were…wherever this is, and it sucked you through to our home."
The two creatures watched with wide eyes as the video played, then turned to each other for what seemed like a serious conversation.
Despite the fact that neither Donny nor Raph could figure out what they were saying.
"Uhhh, hey, Don…?" Raph said worriedly.
"Hm?"
Donny turned back to his live feed of wherever the two creatures had come from, only to gawk as his calculations glitched and switched to showing a new perspective.
Specifically, a perspective that showed countless more of whatever creature "Bandi" was crash-landing in some kind of abandoned suburb, completely overrun with plant life.
Donny winced in sympathy as one specific orange creature hit the ground hard enough to leave a small crater, then slowly sat up and rubbed at their head. "Ooh, that had to hurt."
"Wahwah wahwah?!" "Bandi" squawked, running up to the computer with as much of a horrified expression as they could manage without a mouth.
The pink one was quick to follow, two little nubs pressing together in front of their mouth like hands raised to stifle a gasp.
"I'm getting the feeling these two need to get back to whatever that is pronto." Raph scowled.
"I'm getting that same feeling," agreed Donny, dropping back in his chair and typing rapidly.
Mikey chose that exact moment to saunter in. "Hey, guys, me and Leo heard some funky noises from in- woah!"
The two creatures whirled around to look at him.
Mikey froze, then lit up in glee. "D'awww, these guys are adorable! Where'd you find 'em?"
"It's less that we 'found' them and more that they just sort of showed up," said Donny, still typing. "Through a dimensional portal, no less!"
"Popal!" agreed the pink creature with a serious nod.
"And it looks like they're having a bit of a bad time, too," added Raph, hooking a thumb back at Donny's display, where the crash-landing creatures had started pulling themselves together.
Donny hit the enter key with an air of finality, then stood up. "I'm getting the portal stick. These guys may be from a 'cuter' dimension than even the Turtle Power guys were, but clearly cuteness isn't everything."
"What makes you say that?" Mikey walked up to the rest of them and grinned, gesturing at "Bandi." "With a face like this, you could get away with murder!"
"Bandi" blinked up at him, seemingly unamused. "Wah."
"Well, their dimension has barely anything in common with ours," said Donny, jogging around the edge of the console. He started digging through one of its compartments before holding up the portal stick triumphantly. "Despite that fact, a portal spontaneously opened and dropped them virtually into our lap, and the few similarities my systems can find are…kind of worrying, honestly. They don't even come from any branch-offs of Turtle Prime, but the threat levels I'm getting for their dimension- they're off the charts!"
Mikey blinked, most of his levity fading. "These guys? From a scary universe? I'll believe it when I see it."
"Woah, woah, woah, back the truck up." Raph held up his hands to get Mikey to shut up, then turned to Donny. "I thought Turtle Prime was the universe everything else hinges on. That whole mess with Ch'Rell and the gritty guys kinda proved it."
"Everything else where there's ninja turtles, yes." Donny's voice was grim. "Not everything else outside the realm of ninja turtles. If Turtle Prime was the tree that all other universes like ours branch off of, then these pudgy creatures are from a completely different tree. A cute, adorable, potentially spontaneously-combusting tree that just so happened to nudge one of its branches into our own and might just do so again."
Raph swallowed, then, turning to leave the room, "…I'm getting Leo."
"Good thinking. I need time to calibrate this thing so we can make sure to jump between 'trees' with pinpoint accuracy, anyway." Donny brought the stick back to the main console and plugged a cord in the end.
"So we're going with them, then?" asked Mikey.
"Well, considering their universe might cause a dangerous reaction in ours, yes." Donny shrugged and nodded. "At least, so long as Leo agrees."
Mikey nodded, then plopped down right there on the ground and crossed his legs. "Welp, if we're gonna be hanging out for a while longer, we'll need to know each others' names! I'm Mikey! Yeah? Mi-key."
The pink creature tilted their head at Mikey, then repeated, "Mai-kee?"
"Yeah! You're getting it, little dude!" Mikey beamed. He pointed at Donny. "That's my bro, Donny!"
"Bandi" nodded thoughtfully. "Don-nee."
That got a chuckle from Donny. "Yep, that's me."
The pink one nodded energetically, then gave their chest a tap. "Payo pyu, Kaabii!"
"Kabi," said Mikey seriously.
They shook their head. "Po, Kaabii!"
"Cabby?"
"Pooo!"
Donny paused as the dimensional coordinates for each world solidified, displaying four letters and two numbers for each: TMNT-03, and KRBY-92.
He blinked, then turned to the others. "Kirby? Is that your name?"
The pink one- Kirby- immediately pointed at Donny and nodded. "Poya!"
"Huh," said Mikey.
Donny frowned thoughtfully. "What are the odds of that?"
"Bandi" giggled, then, "Bandana Dee. Wah 'Bandee.'"
Mikey snapped his fingers and pointed at them. "Bandana Dee, or 'Bandee' for short."
Bandee nodded. "Wanya!"
"My sons, what is this I hear about another incident across dimensions?"
Donny and Mikey lit up. "Master Splinter!"
Their father stepped into the main room, followed closely by Raph and Leo, though as Raph continued inside, Splinter and Leo both stopped short.
Leo blinked. "What the…?"
"Gentlemen, I would like to formally introduce our surprise visitors, Kirby and Bandana Dee." Donny stood up and gestured to each of them as he said their names. He unplugged the portal stick and stepped forward so the visitors looked his way, then gestured to the rest of his family. "Kirby, Bandee, these are my other brothers, Raph and Leo, and our father, Splinter."
Kirby watched them for a moment, then beamed and waved. "Hiii!"
Donny's eyes blew wide open, and he could see his brothers all mirror the expression, but Splinter just smiled. "Hello, little one. You are quite a ways from home, aren't you?"
"Poyu pyo paepoy," said Kirby solemnly, looking down at the ground.
"You do understand what we're saying!" Raph accused.
"Poya…?" said Kirby as if it was obvious, lifting a near-invisible eyebrow at him.
"That he does," said Splinter. "Listening through language barriers tends to be simpler than speaking through them, I've found. For example, though the details escape me, I can most certainly tell that our new friends here don't have any way of returning home on their own, which is a source of worry for both."
"Wanya…" Bandee admitted.
"Fear not, little ones," Splinter said, placing a reassuring hand on each of their heads. "My sons and I have dealt with matters of the multiverse before, and we do have a way of traversing that massive expanse. Right, Donatello?"
Donny nodded. "Right! I just finished calibrating the portal stick so we can hop between our dimensional branches, so all that's left to do now is make the jump! It won't even be a spontaneous flash, like it initially did!"
"You gonna come with us, Master Splinter?" asked Mikey, pushing himself back to his feet.
"I do not think I will come along quite yet." Splinter chuckled. "Someone must remain to let April and Casey know where you've gone and help them keep things under control here."
"Fair enough," said Donny. "Alright, everybody, let's get our first look at wherever these two were going before landing in the lair."
He, his brothers, Kirby, and Bandee all huddled up in the middle of the room, and with a deep breath, Donny lifted the portal stick and powered it on.
The light swirled and crackled from the end of what used to be the original flashlight, and after a few moments, it resolved into an image of a picturesque tropical beach.
"I've always wanted a beach vacation!" declared Mikey, immediately leaping through the portal.
"It's like he forgot about that whole 'spontaneous combustion' thing," Raph griped, following him through.
Kirby made a displeased noise, poking at Donny's side with one nubby hand and pointing at the monitor with the other, where the other creatures who'd avoided the portal to the lair were still picking themselves up- notably, not anywhere near a beach.
"This is the right dimension, I'm sure of it." Donny said firmly. "It just might be a bit of a walk to get to the others that fell through with you."
Kirby nodded, then hopped through with Bandee.
"Be careful, my sons," Splinter said. "We've let our guard down about the dangers of the multiverse before, knocked off-kilter by what we regarded to be 'silly' as we were, and it nearly cost us all dearly."
"We know, Sensei." Leo bowed, then unsheathed his swords and squared his shoulders. "Whatever's waiting on the other side, we'll be ready."
"We're the first ninja turtles this dimension collective is going to see," said Donny with a grin. "We'd better put our best foot forward."
Splinter smiled. "I know you will do excellently. Now go."
Donny met Leo's eyes, shared a nod-
-and the two of them jumped into the unknown.
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