Testing Her Systems

Robotic Relief
By Game-BeatX14

In the basement laboratory of her castle, Twilight was elated as she put the final screw into her revolutionary new sex robot. Starlight watched from the side, feeling equally thrilled to see the final product come to fruition. She had been supervising the build for weeks now, providing assistance when Twilight ran into any snags. It was truly a sight to behold, combining the feminine shape of a real mare with all the bells and whistles of an advanced, steel-plated machine. While she gazed upon the intricate features, Twilight turned towards her with a confident smile upon her face.

“This thing is going to change the lives of every male in Equestria if it works. It should… Well, she should have no problem relieving even the strongest sex drives with ease. Stallions, dragons, you name it! Nothing will be too big for ‘Sparky’ to handle.”

Starlight stepped around the work table, deep in thought. The robot was dangerously close to final testing, but once completed it could bring some unexpected issues to light.

“Sooo, are you going to build one for mares too? Chances are we’ll need our own version after the stallions are all preoccupied getting laid by perfect sex robots instead of us.” She pointed out.

Twilight sighed. She hadn’t really thought about that.

“Well, it’s not like we’re building an army of them yet. This is the only prototype, so we have plenty of time to worry about the logistics of mass production later. For now, I just want to see if she can perform the deed completely autonomously. I’ve revamped the AI again; if it works this time then we can finally bring in a real test subject for her to get down on.”

Twilight reached behind the robot’s ear and bumped the power button, to which it suddenly sprang to life. Sparky looked up at her creator, her blue eyes blinking a few times and scanning the room. When she spoke, it came out with genuine inflection and self-awareness.

“Hello, Twilight. I’m so happy to see you again! My update log shows that you gave me new functionality.”

Twilight smiled with joy.

“Yep; I sure did! Can you tell me what that function is?”

Sparky blinked.

“Well of course, Twilight. You need me to get intimate with a male pony and collect all of their sperm. If stallions are truly as docile as the data shows, then this should be easy.”

Starlight’s mouth was agape. While the robots voice was synthesized, it came out soft and feminine; even cute sounding in certain way. Its demeanor oddly reminded her of Pinkie Pie, but much more controlled.

“H-how did you program her to understand all this, and have a real personality? She’s incredible, Twilight!”

Sparky turned towards her and winked, then exchanged a hoof-bump with Twilight.

“I scanned my own brain and copied the neural structure using computer software, then hard-coded a speech generator and seductive personality traits. She’s as intelligent as we are, except we can program any task or restriction that that we need.”

Starlight was quiet. She couldn’t quite wrap her head around what was happening. AI such as this was the stuff of science fiction dreams, yet somehow Twilight had made it a reality. Suddenly, Sparky broke the silence.

“So, which stallion will I be collecting from first? My data log shows there are dozens of suitable test subjects in the area.”

Twilight scratched her head.

“Hmmm… I’m not sure.”

Starlight glanced over at her.

“We’ll need somepony really virile to truly test her limits. Who’s the most sexually active stallion you know?”

Twilight took a moment to think. There were a lot of studs in Ponyville, but one in particular stood out to her.

“I think I might know the perfect stallion for the job. Starlight, can you make a short visit for me? We need him here as soon as possible.”

Thunderlane knocked on the door to Twilight’s castle, with a familiar unicorn standing behind him.

“Are you sure about this, Starlight?”

“Yes, I’m sure. Twilight would never ask you to do this unless she knew it was safe.” She explained with a tinge of exasperation in her voice. Suddenly, her tone changed to a more sensual slur.

“Don’t pass this up. She’ll be the perfect mare to make you cum your heart out like you wouldn’t believe...” She cooed.

Thunderlane gulped. He had to admit the thought of getting laid by a cute robot did turn him on a bit.

“Alright… I can do this.”

Suddenly, the door opened, and Twilight was standing in front of them with an excited look on her face.

“Oh, hey Thunderlane! I’m glad you decided to come here.”

He shifted anxiously.

“Thanks… I’m a little nervous, though. This almost sounds too good to be true.”

Twilight was about to speak, but Starlight responded first by propping herself up on his shoulder tauntingly.

“You know, for such a big, strong stallion you sure seem hesitant. I thought you weren’t afraid of anything…” She teased.

Thunerlane took offence to that, and his tone changed.

“W-what; me? I’m not worried. Nope. Not at all.” He waved his hoof dismissively, his smug expression oozing with bravado.

“Good.” She rubbed his cheek, and he blushed. “Now let’s get you down into the lab.”

“Yes ma’am!”

Twilight snickered. That stallion would do anything to impress another mare. Questionable persuasion aside, she hoped that Thunderlane was genuinely prepared for the ride in store.

Twilight, Starlight and Thunderlane all stood together in the large open test room of the lab. In the middle was his metal partner, who was currently turned off. Thunderlane studied the intricate mare curiously. He noticed a bright orange light on the top of her head.

“Is she charging?”

“Yep! This circle in the floor is actually a giant wireless charging pad, so we don’t even need to plug her in. She’ll come back here on her own when the batteries run low.”

The gray pegasus continued inspecting what was soon to be his mate.

“Does she have a name?”

Twilight smiled.

“Of course! Her name is Sparky. Kinda like Sparkle, except more electric sounding.”

Thunderlane chuckled.

“Heh, cute.”

Twilight eagerly waited to reveal the more important details of the upcoming encounter.

“I designed Sparky to have extremely advanced AI. She should be able to tease you and talk dirty as much as a real pony. Then once she locks onto your reproductive parts, the rest is pretty much par for the course. Just don’t try to run the show. If you relax and let her perform her programmed deeds, then you should be fine.”

Thunderlane curled his lip in thought.

“Wow... If she actually works, I’ll be extremely impressed.”

Twilight grinned.

“Oh, trust me. You’ll be more than impressed. So, are you ready to turn her on? In a literal sense, of course... The power switch is behind her left ear.”

Thunderlane chuckled, and then took a deep breath to build his confidence.

“Yeah; I’m ready.”

“Good.”

Twilight trotted away, but Thunderlane tapped his hoof warily. He still felt slightly uneasy, but didn’t want to admit it. Various concerns raced through his mind. Would a robot feel too artificial? Would the sex be too rough, or even dangerous? How would it know when to stop? There were so many questions, but only one way to find out. He took a deep breath, puffed out his chest and pushed all doubts aside. Twilight called back to him as she reached the edge of the room.

“I’ll give you two alone some time. If for any reason something goes wrong, just remember; press behind the left ear. Starlight and I will be monitoring you two on camera in case of an emergency. But uh, try not to think about that…” Her face flushed red.

She ambled out the door and closed it behind her, quietly talking to herself.

“This is great. For once I can actually say watching two ponies have sex is for research purposes...”

Thunderlane confidently approached the robotic mare. Her ice white body looked sleek and attractive, with a perfect size that was to die for. She appeared to be covered in a thin layer of synthetic fur. He ran his hoof through her silver mane, and it felt surprisingly natural. The next thing he noticed was the screen on her upper chest, and below it was a plexiglass panel allowing him to see the innards of the sex machine. Inside was a large, cylindrical pump coated with a fleshy looking material and held up by several motors that would allow it to move precisely in any direction. At the top, the main unit was connected to a transparent hose that ran to a small clear liquid storage pouch. It was apparent that his product would go there.

“Well, this is going to be interesting.”

Not wanting to beat around the bush, he reached behind her ear and pressed the power button. Almost instantly, the sound of small servo motors and buzzing electrical components could be heard. Her eyelids shot open, and Thunderlane jumped back. Her deep blue eyes scanned him curiously, appearing full of emotion and wonder. She smiled.

“Hello there! I’m Sparky. I take it you’re Thunderlane?”

The surprised stallion could hardly believe it, but decided to go with the flow.

“Yeah, that’s me.”

Sparky clapped her hooves together excitedly.

“Nice to meet you. Twilight told me she would be sending you over to give my collection system a test run. Hold still for just a moment while I do some quick scans on your body. I need to process some measurements first to give you maximum pleasure.”

Thunderlane remained motionless as a thin red light shot from her eyes, much like a giant barcode laser. Sparky thoroughly scanned his body from top to bottom, collecting and processing troves of information rapidly. He couldn’t help but feel vulnerable as the screen on her chest displayed dozens of measurements, ranging from basic information like height and weight, to more intimate details including the size of his penis and reproductive health.

Species: Pegasus
Height: 5’1
Weight: 140 lbs.
Age: 24
Penis Girth: 2.1 inches
Length (flaccid): 4.3 inches
Length (erect): 7.2 inches
Seminal capacity: 52 milliliters
Last ejaculation: Three days, two hours ago
Overall reproductive health: 99.6%

Generating intercourse script…
Status: Complete

Objective: Extract 52 milliliters of ejaculate
Orgasms required: 3
Approx. time: 7 minutes, 14 seconds

She stopped scanning, having collected all the information she needed.

“It appears you’re in perfect sexual condition. We’re ready to proceed.”

Sparky was smiling with enthusiasm and confidence. Thunderlane gazed into her deep blue eyes and realized how beautiful they were. Assuming her eye sockets were some type of digital projection, they did a really good job of conveying emotion and making her feel more like a real pony. He gulped tentatively.

“I have to say, when Twilight told me about you, I was expecting some sort of buggy, awkward scripted AI. But you seem so natural.”

Sparky nodded in acknowledgement.

“Twilight did tell me you might feel a little weirded out at first. Something about an uncanny valley and how real ponies aren’t used to robots like me.” She recounted.

Thunderlane couldn’t believe how self-aware she was. His racing thoughts were interrupted when she spoke again.

“It’s time to get started. Permission to proceed? Your consent is required. Once given I won’t stop until completion, so buckle up.”

Thunderlane snapped out of his thoughts.

“You have my permission. Now, let’s see how you stack up against a real mare on the inside. Can you lay back for me?” He instructed, as he put a hoof on her shoulder plate. She turned her head slightly, and made uncomfortably direct eye contact. Suddenly, he remembered what Twilight had told him earlier about letting her run the show. Sparky chuckled a bit.

“It’s not my job to follow your preferences, Thunderlane. My script shows that maximum sperm extraction will be achieved with me in the dominant position. On top. Cowgirl style. Whatever you want to call it.” She shrugged.

Sparkly reached out and gently, yet insistently pushed his hoof down. Thunderlane raised his eyebrow with uncertainty.

“Okay, that makes me worry. So what happens if something hurts during sex and I ask you to stop? Will you ignore my instructions then too?”

Sparky put a hoof on his shoulder reassuringly.

“I’m monitoring all of your vital signs, even as we speak. If something is wrong, I’ll know when to stop. Trust me.” She winked.

Thunderlane smiled, and her sensors picked up a slight increase in his heart rate. He felt much more comfortable and excited now that she had acknowledged his concerns. Sparky cocked her head and licked her lips.

“Ok then... I guess we’re good to go? It’s time to stimulate your reproductive system. Preparing aphrodisiac mixture.”

Sparky opened her mouth and shot out a burst of gas. Thunderlane inhaled it, and instantly felt his dick harden. His lust grew with ferocious speed, and his loins stirred.

“Now, I need you to lay back for me Thunderlane.” She teased.

The horny pegasus was suddenly pushed backwards onto the floor, as she pounced and used her hooves to hold him down and restrict his movement. Despite being slightly smaller, the mare’s reinforced construction made her a fair bit stronger than his body. Sparky pinned him down and aligned herself over his cock, making him inhale excitedly.

“Adjusting entrance for best fit.”

Thunderlane watched through the transparent panel as her sex components adjusted to the exact size of his cock, and her bottom opened up, revealing the carefully designed love chamber. Sparkly paused and looked down at him, then aligned her entrance right up to the tip of his cock.

“I’m about to secure your penis, Thunderlane. Stay calm; it will be super constricting, but that’s necessary to prevent any leakage.”

There was a quick burst of suction as she lowered down, and his cock was inhaled all the way up inside her with a loud slurp. Thunderlane whimpered as her chamber tightened down over every inch of his reproductive organ. He could see his cock inside her, watching as all the moving parts clamped down to make sure pulling out wasn’t an option. It felt more restrictive than any mare he had ever been with.

“Oh Celestia; it’s so tight…”

His dick stiffened inside her, and he started to throb. Her mechanical tunnel seemed to hold his thrashing cock in place with ease. Sparky put a hoof on his chest.

“You’re going to feel some temperature changes. Don’t fret; it’s all part of the process.”

Thunderlane panted as the temperature of her vagina elevated, thoroughly warming his needy member. The warmth helped to ease away the tension in his muscles, and he humped upwards, relishing in her delicate handling of his cock. He was already starting to enjoy the experience more than regular sex.

“Engaging stimulation.”

Her insides started to pump up and down on his cock, stretching without losing grip around the base. It was at that moment when Thunderlane realized how much more intense this could become. The pumping mechanism fed on his rock-hard dick, firmly but methodically coaxing him towards a powerful release. Sparky controlled his pleasure with careful precision.

“Oah, there we go… Keep doing that.” He slurred. Sparky smiled in response.

“You like that, big boy?”

Thunderlane moaned.

“I’ll take that as a yes… hehe.” She giggled.

Thunderlane could hardly process the amount of pleasure he was feeling. He thrusted his hips as much as he still could beneath her weighted metal body. Every inch of her system constantly adjusted to match the movement of his cock. Right as he was starting to feel pressure building, her pumping slowed down to a very forceful flexing. Thunderlane yelped.

“Don’t slow down! I’m getting close…”

Sparky looked down at him with an analytical gaze.

“I know… But prolonging your pleasure will ensure the most complete orgasm possible.”

Suddenly, the inside of her chamber began twisting his cock slightly back and forth, teasing him to no ends with manipulative tugging. Thunderlane whimpered in satisfaction.

“Enngh; I’m getting close!”

Sparky gripped her legs tightly against his body. The screen on her chest flashed, displaying 95% pleasure.

“Yes Thunderlane. I know...” She quipped nonchalantly. Sparky rocked her hips excitedly as Thunderlane flinched.

“Engaging vacuum.”

Her vagina constricted, and a powerful suction engulfed his cock. The gauge reached 100%, and on cue Thunderlane orgasmed in an eruption of pleasure. Her milker tugged at his length forcefully, and he thrusted upwards and spasmed as every drop of his ejaculate was sucked up through a clear tube and collected in a small tank. He shook and kept blasting ropes of thick, milky cum inside her body. The feeling of being unable to resist her greedy collection heightened his pleasure. Not a drop escaped as she milked him senseless. The orgasm lasted almost ten full seconds, until he started to feel drained.

“Good boy! That was a lot, but we aren’t done yet. Spill it all out. My systems indicate that was only sixty percent of your total potential output.”

Thunderlane was breathing heavily.

“Only *huff* sixty percent?”

Sparky nodded.

“Yep. So I need you to give me more, until you’re completely relieved. All of it.”

Thunderlane grimaced. While he didn’t mind being the submissive once in a while, he desperately wanted to see how Sparky would respond to a change of position. Ignoring Twilight’s advice once again, he decided to take matters into his own hands.

“Let’s try something a little different, Sparky.”

Thunderlane used all of this strength to push her hooves to the side and roll her over, his dick still fastened inside her. The maneuver was harsh, but he managed to tumble over, pin her down, and begin rutting her, humping energetically with all his might. He quickly found that her lack of reaction to his domination was off-putting. Sparky chuckled.

“Oh no you don’t! We’ve already gone over this. I’m in charge here, buddy.”

She used her hind legs to knock Thunderlane’s hooves out from underneath him, flipped over, then grabbed the stallion around his waist and rolled back to her original position . As she completed the switch, she pressed her muzzle against his nose and winked.

“The more control I have over your body, the more effectively I can make you cum. That’s my job. Understood?”

Thunderlane tried to push her off, but she responded by tightening even more, then puffing out another burst of aphrodisiac spray from her mouth. The normally confident pegasus felt a loss of power, as his body screamed for her to take his building orgasm once again.

“Your stress levels are rising. Are you... afraid of me?” She asked, her voice ringing with concern.

He gulped, feeling unsure of how to respond. Sparky’s sentience and ability to read his emotional state was strangely arousing, making his dick throb repeatedly inside her.

“I need to milk you completely dry, Thunderlane. Just two more orgasms, then I’ll let you go.”

Her insides started to vibrate and pulse, stimulating his shaft and making his legs twitch. The defeated pegasus started to drool. Feeling his body at the mercy of such a machine was unlike anything he had ever felt. She held complete control over his body, and his release. Sparky bumped up and down, using her hooves to keep Thunderlane in place while he struggled. The shaking Pegasus finally gave in, gritting his teeth and shooting another batch of seed up into her cum siphon. His second orgasm was even fiercer than the first, as the feeling of complete helplessness radiated through him. No mare had ever made him cum twice in such a short amount of time. He started to feel the pleasure slowly fizzle down into exhaustion.

“Sparky, I *huff* think that was it. I’m spent…”

She rubbed a metallic hoof against his cheek.

“Aww, sweetie... We’re almost there. This last orgasm might take some time, but it’s the most important one.”

Sparky gyrated her hips slowly, coaxing him back to a full erection. Thunderlane tried to break free, but could barely resist her rigid metal limbs. Her sensors captured a massive spike in heart rate, which needed to be accounted for. But her programming suggested it was still safely in the threshold of bodily stability. She needed to extract more. Sparky paused her ministrations, and leaned down.

“Are you doing ok?” She asked.

Thunderlane panted.

“Males aren’t supposed to orgasm this much... You can’t just force me to do it a third time...” He grunted.

Sparky pounced on him and applied a bit of suction, her unending milking scratching at the guttural instinct of his body to cum. He groaned and thrusted upwards, feeling a third release brewing. The display on her chest crawled up to 50%.

“You are far more virile than you realize, Thunderlane. There’s a reason Twilight chose you.”

*Beep* 60%

Thunderlane felt his dick stiffen. He began to shake and sweat. He wasn’t used to having multiple orgasms within minutes of each other, let alone with such intensity. Sparky pumped up and down, tempting him further. He felt a slight pressure building, but it wasn’t like the body shaking pressure from before. It was a slow, forced buildup. Her milking system was relentless and precise, trying desperately to extract everything from him.

*Beep* 75%

“Agh, s-stop… I can’t c-cum again!” He squealed hysterically, even though deep down he felt something powerful stirring, fighting its way inside. It felt so wrong, and yet so desirable. His instincts battled with his overwhelmed body. His mind wanted so badly to reach up and press Sparky’s power button, so much that he began to reach out for her ear, but his enraptured body wouldn’t let him. He needed to let her suck the last of his raging hormones away for good. Thunderlane lowered his hoof, his cock throbbing in animalistic fervor.

“Yes, you can. And you will.”

Thunderlane was now shaking and sweating profusely. Her pump dragged up and down on his dick, clawing at his deepest instinct to reproduce. His dick was achingly hard. She leaned forward, with a predatory gaze in her eyes.

“You feel so firm and energetic inside me... It’s actually kind of cute.”

Thunderlane shook and bit his tongue as a third and final orgasm shattered his senses, making his body sting. It came out with a pained squirt. His mind became foggy, as he jizzed his heart out for the ravenous robot riding his throbbing dick. He nearly blacked out as he watched about an ounce of his sticky fluid get sucked through the tube again, robbing him of his final expulsions. Sparky’s motors winded down, and the pressurized grip on his cock loosened up.

“Extraction complete. Amount collected: 52 milliliters.”

Sparky stood up and she slid off of his sapped cock, finally allowing him room to breathe. Thunderlane heaved in exhaustion. He had never felt more physically depleted in his life. His dick was now completely soft and limp; relieved of its vigorous hardness. His vision was cloudy, and saliva dripped from his mouth. Before he had a chance to think, the door at the end of the room opened. Twilight and Starlight trotted in, looking rather elated that the test run had been successful. Twilight had a look of disbelief on her face when she saw the generously filled pouch of sticky liquid inside Sparky.

“Good job, Sparky! You did perfect.”

“Thanks Twilight! He was a tough one to crack, but still manageable.”

Starlight interrupted their celebration.

“Um, girls? Is he okay?”

Twilight turned around, and noticed Thunderlane lying back on the floor, nearly passed out with his tongue hanging out of his mouth. He made several wearied and pained moaning sounds, and his fur was matted with drool and sweat.

“So… much c-cum… So tight... Wouldn’t s-stop…” He shivered. Slowly, he sat up cross-legged, trying to catch his breath.

Starlight turned towards Twilight, a look of astonishment in her eyes.

“I think you may have struck gold. Sparky really cleaned him out good. Maybe a little too much though... Come on Thunderlane, let’s get you home to rest.”

Starlight used her magic to stand Thunderlane’s limp body up and walk him out of the lab. The gray pegasus was still panting and stumbling, looking rather tired as he was escorted out of the facility. The two walked up the stairs and reached the front door, exiting out into the sunlight. Starlight slung a hoof around his body, holding him close and affirming his attention as they trotted away towards his house.

“So Thunderlane… I noticed at one point you reached up like you wanted to shut Sparky down, but never quite touched her ear. Was she a little too much for you?”

He shrugged, slowly regaining his composure.

“Of course not. I can handle a bit of roughness.”

Starlight rolled her eyes.

“You don’t have to keep up this macho act to impress me. I’m just curious. Sparky is still a prototype, after all. We test things to see how well they work, and I want to know how she made you feel.”

He smiled warmly.

“Well uh, Sparky was definitely very… insistent. More than any real mare I’ve been with.”

Starlight grinned, and squeezed him tighter.

“The thing is, you tried to flip her over and become the dominant one. But in the end, she asserted control and you enjoyed it. Isn’t that right?” She pressed.

Thunderlane stumbled briefly on the path, caught off guard be her oddly specific question. She asked it with such lecherous curiosity, and it caused his heart to skip a beat.

“Y-yeah, I guess. Like, being on the bottom was for once was kinda exciting.” He admitted.

Starlight stopped him, and turned his body so they were face to face.

“So tell me then… Would you feel more comfortable doing that with a real mare? I mean, the whole submission and multiple orgasm thing…” She flicked her tail against his side. Thunderlane inhaled sharply, but didn’t say anything. Starlight gazed at him, trying to figure out how to crack his shell. This might be her only chance.

“Even though the test was for Sparky, I think we can both agree that you learned a little bit about yourself too, don’t you think?”

Thunderlane blushed. It was mildly embarrassing how quickly Starlight was trying to capitalize on his one-off moment of submission.

“Listen, I know it was enjoyable but I didn’t really have a choice. Sparky overpowered me, and-”

Starlight put a hoof gently on his muzzle, stopping him from rambling any further.

“Thunderlane, you’re a beast of a stallion. I’ve had had my eyes on you for a while, but I was afraid our personalities would clash when it comes to being in bed.”

She wrapped her hooves around his body and hugged him yearningly, her eyes wide with lust.

“But, if you can do for me what you just did for Sparky, then I think we’ll have a lot of fun ahead of us.”

She leaned into his ear and whispered.

“Trust me, that robot is a kiddy ride compared to what I can do to you…”

Starlight nuzzled suggestively against his neck. Thunderlane gulped, and opened his mouth, but no words would come out. She gently licked his muzzle, making his pupils widen.

“Why don’t you go home and charge your batteries, and when you feel ready again, come pay me a visit.”

As starlight trotted away, Thunderlane felt paralyzed. She was preying on him in a way no mare had ever done. It felt so foreign, being asked to back down and let a mare take the reigns.

Yet somehow, it felt so right.