RD-07/ Interdimensional Problems

by Gray Compass

Rating: mature
Tags: Sex, Twilight Sparkle, My Little Pony: Friendship is Magic, Alternate Universe, Rainbow Dash, Romance, Comedy
Length: 3214

An alternate version of Rainbow Dash accidentally escaped into Equestria... And it had a cock.

RD-07

Only one, of the infinite versions of Rainbow Dash. The seventh derivative, not absurdly different from the original one, but different enough to have a testosterone-filled mind.

Friendship, loyalty, and a horsecock.

Published 2016-08-20 22:40:02 UTC
Last updated 2016-08-20 22:40:02 UTC

Mission Acomplished

It was a seemingly ordinary night for the guards on duty in the royal research facility, nothing else planned aside from doughnuts, coffee and contemplation.

For their misfortune, that night just seemed ordinary.

“Oh crap.”

Trotting upstairs as fast as he could, White Sparks slammed the double-doors open making his way through the intricate corridors and chambers. With a bang he galloped into the control room, all faces turning to him.

“Oh crap, oh crap, oh crap!” He panted, sweat dripping down his forehead.

“What’s the matter?” One of the guards stood up, his half-eaten doughnut floating in the air. White Sparks jumped straight towards him, tossing the donut away on the floor - for the unicorn’s dismay. “Hey- Hey dude, chill! What’s the heck is going on now?”

“One of them escaped!” Sparks exclaimed, shaking his comrade's shoulder. “It’s gone, Ray!”

“W-what? I mean… How?” Ray stepped away from him.

“I have no idea, I may have dozed for a little while and when I checked the chamber again it was empty.”

“You may have dozed? Sparks, you can’t be seri-”

“I fell asleep, alright. It was just a nap, goddammit! Nothing ever happens here.” Sparks face-hoofed in frustration. “We need to inform the Princess.” He said somberly.

“We? Sparks, you messed up. It was your shift. You go there and inform Celestia. I’m not moving a hoof.” The unicorn frowned, shaking his head.

“Ray please… She’ll kill me!”

“She has better things to do, you idiot. What in Tartarus are you? A stallion or a little filly? I’m your superior and that’s a direct order.” He changed the tone. “Inform the Princess of the incident. She’ll know what to do.”

“And bring me another doughnut, dammit.”

It was a dead night, and not a soul could be found in that part of the castle. A cold gust of wind ricocheted on the curved walls disturbing the still banners hanging from the ceiling; they'd cast long shadows on the floor, wavy, deformed. The clip-clop of his hooves sounded louder with each step.

The stallion halted, turning to look at a majestic gateway, the sun carved on its center, a faint yellowish light escaping from the crack under the door.

It was there.

He never thought he would have the guts to wake up Celestia - but the circumstances asked for it - he'd rather disturb Celestia's candy-colored dreams than giving the news to her sister. Luna still freaked him out.

Timidly he knocked the door, shutting his eyes tightly and releasing a breath he didn't know he was holding.

“Come in.” Said a very clear voice.

The stallion pushed the door open very slowly, surprised to find the princess wide awake, lying on a cushion with a large book before her. She already seemed to be waiting for him; the princess never looked surprised. It gave him the creeps.

“Oh, White Sparks.” She said, placing the book aside and standing. "How can I help you?"

“Princess Celestia...” He made a quick bow before her. “I am so sorry to bother you at this time - I wasn't given another option - there was… an incident involving one of the portals.”

“What sort of incident?” She raised an eyebrow.

“Well..." Sparks coughed. "RD-07 crossed the border and managed to escape from the containment facility.” He spit it out in a single breath, doing his best to remain calm.

“RD-07?” Celestia touched her chin, lost in thoughts for a moment. “Not the one with those gooey tentacles?”

“Oh, no no no. That’d be RD-77.” Sparks flinched at the thought. That memory was cringeworthy. “But Princess – tentacles aside – we must find this one before it finds somepony else.”

“We will.” She assured him, waving a hoof. “Have a seat Sparks, it’s not the end of the world. I’ll track it down in a second, it can’t have gone too far.”

The stallion dry-swallowed.

With a touch of her horn, a huge map of Equestria spread itself all over the floor; tiny glowing dots representing the major cities and villages. It shimmered like a crystallized world.

As Celestia moved around zooming in and inspecting some specific areas of the map, Sparks finally accepted the offer and rested his flanks on a couch, observing in silence the multitude of unknown spells that the princess was casting on the enchanted map.

“RD-07…” She muttered. “Do you happen to know what are the main divergences between this individual and the one we have here?” Celestia asked, not even bothering to look at him.

“I’m n-not sure. It wasn’t on the special attention list. Aside from its incredibly sneaky skills I believe it must possess only a few minor differences; behavioral ones mostly. It’s only the seventh iteration after all, as far as we know-”

“Found it.” She pointed to a specific location on the bird’s eye view. “As I said, sneaky or not, it couldn’t go too far.”

Sparks approached the spot apprehensively, walking through the odd map until he saw the place Celestia was pointing at.

“The Castle of Friendship! Of course!” He said, a weight being lifted from his back. At least he knew about the whereabouts of the fugitive. “I'm going to call the special team right now, thank you Princess Celestia, I'll take care of-”

“Wait.” She poked his chest with the tip of her hoof. “You’re not calling anypony yet.” Celestia said.

“Why not?" Sparks moved away slowly. "It is imperative to contain the risks, or else... it will interact with somepony! We don’t know what the divergences are.”

“Exactly!" Celestia displayed a bizarre enthusiasm. "I want to see them. The divergences, that's it.” The princess smiled mischievously. “It will be amusing, to say at least.” She chuckled.

“No, it will be dangerous!” Sparks stated, shocked at the unusual response.

“I comprehend your worries, but as of now, there's nothing to be afraid. You are free to return to your post Doctor Sparks. I am going to watch this, and I assure you that if anything dangerous happen, I will intervene.” She reassured him. “I want to know what the so called divergences are.”

Something was knocking the windows of the castle from the outside. Something or someone... It was late at night and Twilight paced around the towering bookshelves filled up with massive encyclopedias. Her library was a museum of dust; although she forced Spike to clean it up weekly.

It was becoming too much for him, perhaps it was time to get an extra dragon. Perhaps less books. She shook the thoughts away. Those weren't even an option.

The rain poured hard against the window panes, the water droplets sounded almost like tiny pebbles.

“Hey Twilight, open up!” A raspy voice shouted, muffled by the rain.

Twilight stopped on her tracks and turned around, walking back to the source of the sound. She knew that voice, but what on the face of Equestria was happening?

“Twilight! Here!”

“Rainbow Dash?” The unicorn unlocked the windows, the pegasus lying against them crashed on the floor with a wet thump. The wind roared inside the castle blowing away parchments and papers from the tables. As fast as the windows were opened, they were closed again. Twilight let out a sigh.

“Rainbow Dash…” She stared at the drenched pony in front of her. “What are you doing here? Look at yourself- Look at this mess!” She levitated a pile of damp papers to a drawer.

“I- I was just… Ya' know, flying around-”

“In the middle of a thunderstorm? At night? Are you insane?”

“I have an adventurous spirit, okay?” The pegasus flapped her wings, splattering water all over Twilight’s face.

“I see…” She bit the insides of her cheeks, rubbing her face with the side of her hoof.

“Eh, sorry for that. You’re not made of sugar, are you?” Rainbow chuckled.

“What?”

“Some tiny drops of water won’t melt your body, for Luna’s sake.” Rainbow scoffed.

Twilight rolled her eyes, casting a drying spell over their bodies. Her hair always looked like a purplish chunk of cotton candy after that.

“I don’t suppose you came here for books.” She said, grooming her mane back to its place.

“Nope.”

“Then please tell me... What your adventurous spirit thought it was doing, knocking the windows at three in the morning?”

“I couldn’t sleep.” Rainbow grinned.

“Oh really?” Twilight asked. “I suppose that gives you the right to prevent me from sleeping as well?”

“You’re funny when you try to be sarcastic.” Rainbow snorted.

“I’m not trying to be anything.” She glared at the pegasus fiercely.

“I was horny alright? I tried to find Applejack, but she wasn’t at home for some stupid reason, Apple Bloom wasn’t an option of course, so I came here. I thought 'Damn, I never fucked an alicorn before' and you’re like… An alicorn, right?”

Twilight stared at her with an ice-cold expression. A thing she had learned from Maud Pie.

“Rainbow Dash, are you stoned?”

“Wow, you’ve been improving your vocabulary!” Rainbow spun in the air.

“If that’s some kind of joke, you can stop now, this is getting ridiculous.” Twilight wrapped the mare in magic, pinning Dash back on the floor.

“Hey, I’m not stoned Twilight. I wish I was, but I’m not.” She said, a permanent grin on her face. “I have something between my legs that’s getting hard as a stone tho.”

“You- What?”

“Twily, let me fuck your brains out, please!” Rainbow pleaded. “Just look at the size of this thing for Discord’s sake!”

Twilight gasped, bumping against a bookshelf. An entire section of law books falling over her back.

“H-how did you-” Twilight muttered, her cheeks flushing to the color of a ripe apple.

“You like it?” Rainbow rolled on her back. "It's majestic, isn't it?"

The expression of shock in Twilight's face was beyond description.

“How did you got this freaking- thing?” She asked, looking away from the pegasus. “Oh my god, Rainbow Dash!”

“Are you mad or surprised?”

“Both- I am shocked Rainbow Dash! Stand up, I already saw enough!” She groaned.

“Alright, so… Will you let me bury it deep into your pussy now?"

“No!” Twilight shouted. “Who jinxed you? Was it Starlight? I swear I’m going to kill her if-”

“I was born with it- And Starlight? Please… She can barely grow a seed of friendship.”

“Rainbow, nopony can buy a penis on the corner shop.”

“I wouldn’t be so sure about that-”

“It requires a very powerful spell to change somepony’s gender. Who did this to you?” Twilight inquired.

Rainbow just growled.

“I already said, no one did it! You have a horn, I have a dick. Simple as that.”

“You ain’t going to fuck me with this thing.” Twilight pushed her away.

“If not me, who else? Flash Sentry? Pffft.”

“Shut up Rainbow Dash!”

“You know that he’s kinda... gay right? I mean, just look at the way he treats the other guards. I bet he blows his superior when nopony's watching. Hell, he may have even sucked your brother’s cock when he was captain.” She scoffed.

“Shut the fuck up! That's gross.” Twilight couldn't help but think about the implausible scene. She shook her head, but the scenes wouldn't leave her mind.

“Oh, she said a dirty word!” Rainbow joked. “I like that, Twilight, it makes things easier.”

“You're being disgusting!”

"That's what you say now. I wanna hear you moaning with your face down on the floor."

There was something in Rainbow's words - something very wrong. Something weird. All the things she described were crawling inside her mind, Rainbow's words were like neurotoxins, tiny critters fighting for space among her neurons.

"What... What are you saying?" Twilight panted, backing away, the magic spell holding Rainbow in place dissolving in thin air. "How can you say something like that?"

"Think Twilight. Think."

She could feel her ears warming up; her imagination was going haywire again. 'That was certainly not right- But Dashie must feel so good - she's so hot - her kisses would leave burn marks on my coat...'

"What are you doing to me!" Twilight shook her head, her legs felt weak and clumsy. She crashed over her writing desk, her strength being drained away.

Rainbow got closer and closer, touching the shelves with the tips of her wings. Twilight tried to roll over, only to fall in an even more vulnerable position.

What was that? A changeling curse? Heaven or Hell?

There was an urge to run, fighting against an urge to dance according to the melody. And what was the melody?

"Who are you?" She asked, feeling the warm touch of the pegasus feathers caressing her back.

"I am exactly what you need. And you are exactly what I want."

'Nopony would know, Rainbow would never do any harm-' What in the depths of tartarus was she thinking?

"Dashie- please..." Twilight was paralyzed, not by a spell, but by her own body. Her shallow breathes weren't enough to fill her lungs. The alicorn was spread over the desk like an open parchment, her hind-legs hanging behind her.

"Yes..." Rainbow muttered. "Yes I will."

Without any warning, Rainbow planted a lick across Twilight's exposed marehood, hearing an electrifying moan in response. She grabbed each side of Twilight's flanks, touching her cutie marks, spreading her thighs. The alicorn tried to suppress a gasp.

Laying on her belly, Twilight hadn't the courage to look back at Rainbow, that was an absurd! But the absurdity of the situation made everything even more entrancing.

The pegasus pressed her muzzle between Twilight's legs again, setting her tongue free to explore the intricate shapes of her friend's glistening pussy. Rainbow started slowly, circling Twilight's pinkish lips, pushing them apart. She basked in the faintly salty taste of her fluids, there was something sparkly, something magical. Maybe it was just Rainbow's imagination.

Twilight tried her best to swallow her own moans, but with every wink of her clit, and every touch of Rainbow's tongue, she felt as if her back was about to melt, together with part of her brain, possibly.

Dashie kept licking and sucking Twilight's clit, enveloping it with her lips and tongue every time she could. That little, almost heart-shaped gem. It throbbed, exposing itself to Rainbow's cunning stunts.

"Ahh, Rainbow!" She let out a muffled plead, biting down her hoof.

The pegasus smiled, her tongue pushing further until Twilight's luscious juices started dripping down from her chin. It was a delicious sensation for both of them, the lack of control, the absence of logic.

Twilight wouldn't fight back anymore- her wings never got that stiff before in her life. She could blast a door open with one of those things.

When Rainbow Dash finally backed away they were nearly as wet as the rain falling outside. A small puddle had formed on the floor beneath Twilight's desk, a string of fluids still connecting them.

"You're juicy as fuck Twily." Rainbow smirked at the view, tasting her lips, absorbing as much of the flavor as she could, every note, every hint.

"Ahng, W-we really should stop this now- I don't even"

"Shhhh." Rainbow placed a hoof before Twilight's lips to hush her down, gently turning the alicorn to her back. Twilight blushed furiously, looking at Rainbow's dripping muzzle, her beady eyes contemplating that mess with... pride.

"Perfect, Twily... Perfect." Rainbow whispered. "You'll love this."

"I- what?!"

Without a hint of hesitation, Rainbow Dash stood up, planting her fore legs on each side of the table; whoever designed that old desk deserved a medal. Kicking the chair to the side Rainbow prodded her stiff member against Twilight's pussy.

Taking a deep breath, she slid the tip of her cock inside Twilight's moist slit. They gasped in unison, Twilight squirmed in place tossing a pile of books on the floor, her erratic breath ending in unintelligible moans.

Rainbow bit her lower lip, feeling those unexplored fleshy walls contracting around her member.

“Oh y-yeah, squeeze it tight Twilight. I’m not going anywhere girl.” Rainbow grunted, pushing her cock further into the alicorn’s virgin pussy. Twilight let out the loudest sound to ever reverberate through that library. What a crime.

Rainbow moved again pulling out just a bit, and then diving in deeper, the fleshy ring of her cock bumping against Twilight's stretched slit. To hell with Applejack; fucking alicorns was so much fun.

Twilight arched her oversensitive body as Rainbow pressed her wings against the hardwood tabletop.

"Ooh f-fuck- Rainbow!"

She contorted under the pegasus weight as their sweaty chests brushed; she could feel the stiffness prodding her insides, craving for more. With every movement a new sensation arose; every touch, every bump. It all only helped to boost the wild ecstasy filling up their minds.

"Y-you're loving that, aint ya?" Rainbow asked, a shiver running up her spine. Planting small kisses on the princess underneath her, she simply couldn't help herself, Twilight was too gorgeous; too naive at times. How delicious was her taste as Rainbow bit down her neck.

"Ahhhnh- Dashie please..." Her hind legs kicked the air in vain, she had little control over that.

Rainbow increased the pace feeling the tension building up with every thrust, the table bumped against the shelves, the sound of those heavy books falling down could only be matched by the rhythmic slapping of her balls. That was a very peculiar comparison, given the circumstances.

Twilight closed her eyes, wrapping her hind legs around Rainbow's waist, there were so many unknown sensations, her abdomen tensed up and relaxed as waves of pleasure flowed through her.

"A-ah, I'm near, Twilight." Rainbow grunted, fulfilling the prophecy of burying her cock into Twilight's pussy. "Y-you take cock pretty good, Twily."

Hearing those words messed even more with the already overflowing thoughts of the alicorn. She gritted her teeth, breathing fast, trying to cope with the spasms and burning waves that assaulted her body. Her inner walls clenched around Rainbow, she could feel every inch of her.

"Unnngh!" She moaned, a sudden burst of fluids leaking from her pussy, her horn was glowing like small star, she couldn't control it, she couldn't control a single thing. The only way out was releasing that energy.

The tightness around Rainbow's dick was unbearable, and by the moment Twilight reached her peak, squirting and wriggling underneath, the very sight was enough to make Rainbow release all of her load.

With a final thrust, her cock reached the point of no-return, spurting thick jets of cum. Her mind collapsed in a black hole, as she allowed herself to melt inside Twilight. Gush after gush, until it all started to drip down Twilight's wet tail.

Rainbow pulled away, a last spurt of cum landing on Twilight's chest and belly.

They hadn't much time to exchange glances before Rainbow crashed on the table beside her friend.

A very disturbed Spike backing away from the library's door.

Somewhere in the vastness of the Canterlot Castle, Celestia smiled to herself. Marking something down on a piece of parchment.

"Well... finally." The princess muttered, rolling the paper again.

"Mission accomplished!"

Author's Note

I hope you like this.

No, it's not edited.

No, I don't give a damn.