In the dead of night in Giga City, a certain ninja-like reploid was skulking around a warehouse, having caught wind of a big haul of precious, confidential data about some top secret new technology being stored on a computer being transported through this very location. Making its way through her information network within hours, it was too tantalising for the thief to turn up, happily setting out and weaving her way past the security mechaniloids and crawling through the vents, enjoying the usual thrill of knowing that the entire building would come down at her if she put one foot out of line. But of course, she knew she was far too good for that.



“Too easy.” Marino smirked, the ninja-like reploid dropping from a vent into the security camera’s blind spot, her long, curly green hair flowing behind her as she landed without so much as a sound. With a flick of her wrist the camera was disabled by an electric kunai that jammed the signal back to the source, giving her more than enough time to saunter over to the crate carrying the computer. If she could power it on she could transfer the data then leave, or simply remove the entire memory banks and make off with it, whichever was easier. But when she slowly slid open the lid of the container, she barely had time to twitch before two coiled tentacles shot out and seized her wrists before sending an enormous current down them, Marino screaming as her balancing systems went haywire, her legs giving out before the crate collapsed entirely, revealing a four-limbed machine that grabbed her legs and tied them up, Marino defeated and captured before she knew it.



“Let go of me, you piece of-” Marino snarled as she struggled against her restraints despite the threat of being stunned again, her arms and legs locked tight as she was thoroughly caught in a trap she would have laughed at amateurs for being tripped up by. She didn’t get to finish her flimsy threat before she was cut off by a haughty, barking laugh, a familiar face creeping out of the shadows.



“How wonderfully easy it was to catch you, my dear thief! I thought you would at least notice the trap and force me to get involved, but I suppose I overestimated you!”



“Ferham!” Marino spat as her tall, domineering foe sashayed out from her hiding spot, Marino having not noticed her at all in her eagerness to complete what she thought was easy pickings. The tall, curvy red reploid was hard to miss with her enormous wings and flashy, beautiful appearance, her favourite whip curled around her hands before she stashed it away, giving her a smug look that boasted to Marino that she wouldn’t need it. “So this was-”



 “All my doing? A set-up? A trap? Pick whichever you’d like, dear.” Ferham’s lips curled into a dreadful smile, enjoying watching Marino squirm. “You aren’t going anywhere, after all.”



“You went through all this trouble for little old me? I’m flattered.” Marino said, keeping the defiance in her eyes as she tried to come up with a plan. The machine held her in the middle of the room, hands tied above her head while the only thing keeping her balanced was the machine binding her legs. Ferham circled around her, casually plucking her knives and other tools from her body, tossing them carelessly into an open box nearby.



“Of course I did, as soon as I noticed how predictable you were. You really couldn’t help yourself, could you, you annoying little thief?” Ferham said, cupping Marino cheeks with her hand in a show of control. “Don’t worry, you’ll be receiving something rather special for your trouble, a one of a kind gift!”



Ferham snapped her fingers dramatically, a small warehouse drone driving over carrying what looked like a large tank of some unknown gas, Marino’s curiosity piqued despite her precarious situation. Marino was wracking her brains for a way out, but barring divine intervention, had to admit that she was totally at Ferham’s mercy. If she tried to break out of her restraints she’d get zapped, probably by Ferham’s whip before the machine had the chance to. She hated to give up, but for now she’d have to wait for an opportunity to escape, and try to stop her fuming over her own incompetence from showing on her face and giving Ferham any more pleasure.



“You’ve been quite the pain for myself and my master, you know. A beautiful pain, that is, rather one of a kind.” Ferham said, approaching Marino again who merely scowled at her. “You’re lucky you’ve got such a pretty face, I decided it’d be a shame to dispose of you. I do think it’s a waste to spoil somebody almost a beautiful as myself.”



Marino’s eyes widened as Ferham suddenly leaned in and kissed her, Marino forced to lock lips with her, wishing that reploids hadn’t been given the ability to blush as she broke away, Ferham enjoying her dominancy.



“And this body!” Ferham squeezed one of Marino’s breasts, jolting her pleasure centres and causing her to squirm in pleasure. “It’s just my type. You could be a little bigger, though.”



Ferham continued to circle her, squeezing her ass next, then tracing the slope of her thighs up through her hips to her waist.



“But don’t worry, we can fix all of that.” Ferham declared dramatically, reaching over to the tank and producing what seemed to be an air mask, Marino confused as to why she was using an implement intended for humans, but concerned by her tone of voice. “Both that body and that annoying insolence of yours.”



“I don’t know what’s in that thing, but you can go and shove it up your-” Marino’s bravado was once again cut off by Ferham placing the mask over her mouth, a plug extending and forcing Marino’s lips apart, the gas flowing down her artificial throat.



“You wanted the latest info on our latest creation, didn’t you? You can find out for yourself first-hand!” Ferham laughed, the mask sealed to Marino’s face and allowing the red reploid to step back. “This isn’t just some normal gas, as you might expect, in fact, it’s hardly gas at all! It’s comprised of the latest nanotechnology, although they tell me it’s lighter than air, quite like helium. It has the most delightful effects, as you’ll see.”



Marino’s systems began to blare warnings at her about her structural integrity being compromised, and she looked down with wide eyes to see her bouncy white chest start to steadily expand outwards, taking up more and more of her peripheral vision until it had doubled in size, creaking as her synthetic skin was pushed to its limits, then seemingly rewritten to comfortably carry her expanded mass. Rather than sag downwards under its own weight it remained perfectly perky, and feeling lighter than when she had started. Marino tried to speak, but was impeded by the mask, Ferham chuckling as Marino followed the domineering villain’s eyes to her hips, where her ass was positively blowing up like a balloon, going from generously round to surging outwards, her cheeks starting to dwarf her head in size each, sticking out almost a foot and perfectly round. Her hips widened until they stuck out past her shoulderpads, Marino threatening to turn twice as wide, her thighs already quite so, rubbing against each other with a strangely rubbery squeak.



“What an improvement already!” Ferham laughed, leaning back against a crate and enjoying the show. “But we’re just getting started!”



“What’re you doing to me?” Marino tried to gasp out as her breasts inflated again, now looking like actual balloons sticking out from her chest, her voice mostly unintelligible past her gag, but Ferham was able to guess what she was saying.



“Improving you, darling.” She said smugly. “This technology is somewhat similar to that of the new generation reploids, after all. Who would say no to an upgrade? I’ll find you much more charming once those nanomachines reach your brain and show you the error of your ways.”



No sooner had she said it, Marino’s systems showed a security warning, a foreign, invasive system trying to break into her electric core and rewrite her programming. Her security systems were holding fast, but they were assaulting her from every angle looking for a crack in the armour, and she began to panic, desperate to get away from this assault in her body and mind before it was too late.



Unfortunately, Ferham tapped a button on the side of the tank and Marino began to inflate even faster, her breasts doubling in size and squeaking and wobbling before her eyes as she struggled, her bubble butt and hips sticking out so far you could balance an e-tank on her behind with room to spare, her thighs turning so thick she wouldn’t be able to wrap her arms around them. But still they grew and grew, her thighs constantly squeaking as they grew too broad for her to possibly walk without the two rubbing against each other, only her metallic legs from the knees down remaining the same size, causing an absurd overflow as her puny knees and boots seemed tiny compared to the legs they were carrying. Four or five times her original width, Marino groaned as she began to gain more distance with each sway, not realising that this wasn’t because she was making headway and putting more force into it, but because he body was getting lighter, her absurd jiggling beach-ball breasts almost able to compensate for the weight of the rest of her metallic body on their own.



 But then, all of a sudden, the constant creaking and squeaking stopped. Ferham had tapped a button on the machine, strutting over and pulling the mask off of her.



“Why, that’s quite a good look for you.” Ferham laughed smugly, dwarfed by Marino in every way. “I don’t think we’ll have to worry about you sneaking into any of our facilities anymore! In fact, I’m so happy with you that I’ll be generous and give you a chance.”



Marino said nothing, most of her processing power going into fighting off the invasive nanomachines. It seemed that she and the infection had reached a deadlock, unable to infect her and change any of her programming as long as she devoted all of her resources to it. Without an answer, Ferham went on.



“Submit to me now, and I won’t alter that cute body of yours any further. As my personal servant, I might even let you temporarily reduce it every now and then!”



“The only thing I’d hate more than working for you is myself for agreeing to it.” Marino grit her teeth and smiled fiercely, Ferham’s smug grin not faltering in the slightest at her doomed show of defiance.



“I was hoping you’d say that. Oh, I’m going to have such fun with you, my little thief.” Ferham chuckled, placing the mask back over her. “We’ll see how you feel about that in a minute!”



She tapped the buttons on the tank a few times, and Marino let out a muffled yelp as her belly began to rapidly inflate as well, groaning and straining as her pink-and-white leotard-like midsection was blown up with gas, able to feel it rubbing against the bottom of her breasts as it turned spherical, then oval-shaped as it grew bigger and bigger like a pregnancy in fast forward, nearly pushing her breasts up into her face as it finally became visible past her tremendous breasts, a pink and white orb that wasn’t just growing forward but sidewards as well, matching the width of her ludicrous two metres wide hips that turned her into a grotesque parody of an hourglass figure. But with her belly blown up she was starting to look rather evened out, her breast and butt starting to grow out as her exercise-ball sized ass cheeks puffed up even more, Marino becoming truly lighter than air and now anchored to the ground only by her own restraints.



WIth such massive hips and legs, even if she were to start standing again her legs were useless, pushed out diagonally by her thighs’ own insides. Marino was panicking, unable to make sense of the inflated balloon she was turning into, only knowing that she was totally helpless in every way. Ferham snapped her fingers again, the trap suddenly releasing her arms and legs, Marino making muffled squeaks into her mask as her feeble legs flailed back and forth trying to reach the ground, unable to even brush against it before she was turned over, now belly-down towards the ground and slowly floating upwards towards the roof. Marino was less a reploid and now a balloon, utterly incapable of performing any action but floating helplessly. Now openly cackling in delight, Ferham held down the button that increased the feed of gas, Marino’s body inflating in every direction, the gas seeking every part of her body its could inflate and blowing it up into useless roundness.



“Let’s see how far you can go!” Ferham said gleefully, and expand Marino did, her breasts and butt doubling, then tripling in the speed of their expansion, until each individual breast was as big as her whole body had been minutes earlier, not to mention her globular ass. Her legs were so puffed up that they no longer looked like legs, merely huge, puffy tubes which careful viewers could see boots on the end of. Marino was starting to take up a considerable amount of the warehouse’s space in the open air, from top to bottom a dozen times bigger than when she had started, but didn’t seem to be stopping any time soon. Her comparatively tiny head’s eyes spun, begging for the madness to end as her big butt bumped into the ceiling, the long tube connected to her mask keeping her pointed towards the ground and Ferham’s laughing figure. And bigger she got, bigger and bigger until she resembled a parade balloon, ludicrously oversized, with tiny, worthless arms that couldn’t wrap around a fraction of the side of her car-sized breasts. As bloated and strained as she felt, Marino felt like she could get so much bigger, so much rounder, with no end in sight.



Finally, groaning into her mask, begging for it to stop, Ferham finally used her wings to fly up towards her, where Marino’s exhausted eyes stared at her, begging for release, all defiance gone as she had realised that if it went on any longer, she might just get bigger than the warehouse itself. Ferham lifted the mask, Marino floating up a little more and bouncing against the ceiling with the rest of her body.



“Please… make it stop…” Marino wheezed, even the cheeks of her face puffy and round from the nanomachine gas. “I’ll do anything… please…!”



Ferham positively gleamed, smiling from cheek to cheek as she produced a strange, large needle, holding it up for Marino to see.



“That’s much better, darling. Now, this is the only thing that can restore to… something resembling your former self. To my tastes, of course, but I imagine you’d be quite happy with my superior preferences to your current state. Now remember, nothing but this can undo what i’ve done to you! All you have to do for me to use it is to submit!”



Marino’s lips wobbled for a moment, the last of her resistance faltering as she could hardly think between her overwhelmed body and the constant assault on her security firewall. But her resistant didn’t last long, and finally she forced out a sad, defeated whimper.



“I submit!” She cried. “Please, change me back!”



“You will address me as Mistress Ferham!” Ferham laughed.



“I submit, Mistress Ferham!” Marino yelled, and with that, Ferham jammed the pin into her belly, causing a thunderous pop as all of the gas contained within her burst out all at once, enveloping and overwriting her entire body, shattering the last of her mental defences as a great moan echoed across the warehouse. A flattened, deflated balloon shaped like Marino slowly floated to the ground, even her seemingly solid metal parts gone soft and floppy, her face flat as a pancake as she landed in a heap. Ferham gracefully descended to the floor, bending over and picking up Marino’s deflated form, the puncture hole having already healed as the final phase of her transformation had completed, having changed from the inside out, now having reached the surface. Ferham placed the mask over her face again, watching Marino slowly inflate back into her proper form, albeit once more than twice as curvy as before, with melons for breasts and a gigantic bubble butt. Marino’s skin was no longer the synthetic material that most human-like reploids used, but instead was solid, shiny rubber, from her face to her breasts to even the latex-like “metallic” boots and wrists, which were soft and would give way if one pinched them.



Marino’s systems rebooted, now fully reprogrammed, a look of adoring faithfulness painted on her face. She stood before Ferham with her head bowed, without a single thought of resistance in her head.



“Thank you for showing me the error of my ways, mistress Ferham.” She said, sounding genuinely sorry for ever doing anything besides worship and serve her. “What are your orders?”



“That’s a good question, my new pet.” Ferham said, stashing her needle away. “I could put your talents to work, or perhaps I could have some fun with you first. Or maybe I’ll deflate you again and fold you away until I feel like using you.”



“Whatever you wish, mistress.” Marino said unflinchingly, getting a self-satisfied smile out of Ferham.



“Come, let’s get out of here.” She beckoned for the rubber ninja to follow her. “I think I’ll have some fun with you first…”