(Various M and F to Pokemon, Mass TF)

The sound of clopping hooves barely registered to Karen. It was a life skill, she’d learned to filter out anything in the work day except when someone walked up to the gym’s counter to check in for… Well, it used to be a workout, but now there was an equal chance that it would end up as some sort of podcast or livestream or viral video. Either way, by acting as uninteresting as possible, she’d just be filtered away into the background of those videos and-

“Dash, Rapidash!”

The cry came with a hot rush of air that tasted like smoke and maple. Karen’s ears lengthened in response, and she looked up to find an honest-to-God Pokemon looking straight into her eyes. She should have felt panicked. She should have tried to run.

But she’d already heard. She’d tasted. There was no possible return.

Her throat ached as her neck bulged, pulling away from her shoulders with an equine whinny of her own. Thick, heavy fetlocks surged from her wrists, heavy enough to bump at the intercom to her right. Her heavy, panting breaths flooded the microphone, as did a faint scuffle of hooves as she forced her bulging body over the counter.

She turned, felt her new mate already clambering atop her, crossed her eyes as her nose flared into a short muzzle. Exultantly, she whinnied out a deep, throaty, “Mudsdale.”

It would be the first cry of many, each as infectious as the last, and each of them broadcast over the gym’s tinny speakers.

Kendra’s heart hammered in her ears so hard that she almost missed the first cry, but the second and third were clear enough. The sound of clattering metal filtered some of it out, but not nearly enough. Sweat trickled down her cheeks as she looked up to her trainer, a shy smile on her face.

“What’s this supposed to be? Some kind of nature draa… documentary? Get us into the moood?” She didn’t stop heaving the barbells, an impressive half her weight. She’d worked hard to drop most of her freshman fifteen, and now sported a lean midriff through which her abs were visible.

At least, they were for the moment. But the more she listened, the softer her belly grew, stretching outward like a time-lapse of a pregnancy. And the more it grew, the more she huffed and puffed, unintentional ‘oo’s and ‘aa’s puffing up to her trainer.

Really, Paul didn’t stand a chance. On a normal day, he’d be tongue-tied around the beauty, and that was before his tongue started to exponentially swell in his mouth. It was so sudden that the force of his tongue mashing against his teeth shoved the back of it deeper into his throat.

He choked on the hot, slimy thing, eyes wide, fingers splayed. Webbing surged out from between his digits, and he rocked forward, slapping his palms against the frame before him, gurgling, croaking. He could swear his throat was stretching with each gagged croak.

“Hey… Feelingggrra gooood?” Kendra was dripping with sweat now. It was coming out of her pores in thick, slimy trails that, had she noticed, had taken on a shade of green.

By way of reply, Marcus’s tongue exploded from his mouth, slapping onto Kendra’s face and chest like a wet towel. His eyes went round, and a permanent blush settled across his cheeks at the sweet, minty taste of her sweat.

Of course, she dropped the barbell on her neck. Really, even if it wasn’t for the shock of having a tongue bigger than her head blocking out her vision, her hands were slick enough that holding onto the metal would have been a challenge anyways. Kendra found herself gasping, pawing at the metal bar, feet kicking.

Her long legs were shortening, but growing stronger with every second. She started to try to ‘walk’ her way out from under the bar, but all she succeeded in was stretching her neck like gooey, dripping putty. Mistakenly, Kendra thought that she was suffocating, and that was why her skin was turning purple.

Marcus would have helped, except for the fact that his tongue happened to be pinned as well. He could feel her neck stretching beneath his wet muscle, and felt something in his stomach begin to swirl. What he didn’t realize was that it was a much more literal feeling than a figurative one. A green swirl spread along his body, which suffered changes of its own.

He’d always been a little on the shorter side, but now his arms and legs dwindled to a comical degree. His belly grew, though not as much as his head. His mouth grew wider, and his tongue got stickier. None of this helped him lift the barbell that was pinning him awkwardly against Kendra, whose cries reverberated on the underside of his tongue.

“Ooh! Oooh! Drrr…” Kendra heaved with all her might and somehow sat upright. “Drraah!”The motion lifted the heavy barbell, which fell from her neck against her belly, bouncing off and clattering onto the ground. It also lifted her trainer by his tongue, slapping his pudgier body against her back.

“Oh-edd!” Marcus croaked pitifully, twitching a muscle he didn’t know he had and releasing his tongue’s grip on Kendra. It rocketed back into his mouth with a wet snap, and he fell with a soft thump to find a purplish dragon, dripping with sultry goo looking back at him. “P-Politoed?” He croaked.

“Goodra,” was her reply, her eyelids fluttering as his first croaked word smoothed over the parts of her brain that weren’t dripping in ooze. Then she dove atop him.

The yoga room was supposed to be serene. It was on the second floor, and was isolated from most of the sounds of the gym. A soft harmony of woodwind music played from the instructor’s personal boombox.

Of course, it did have to be connected to the gym’s intercom, in case of emergency. Nobody was prepared for the intercom to cause an emergency.

With the room as quiet as it was, the whinnies and neighs over the intercom seemed to echo, rebounding off the walls, the ceiling, the floor, and the formerly skinny bodies of its occupants.

“Noo! I don’t want to be fat, I look like some kind of spheeere!” Rose wailed, her belly growing so rotund that it became near her entire body. She looked like a ball that was half-white, half-blue, with a beady, dopey muzzle atop it and a pair of cute ears.

She’d screamed the last word into Candace’s face, who replied back with a bark of her own. Candace’s shapely backside merged into the orb of her own body, which jiggled thanks to the growth of her newfound tail. Short fangs poked out from below her upper lip, and tears streaked down her face in horrified confusion. “It PHEALs funny!”

Amber was trapped on her back by her own body, rolling back and forth, staring in horror at her arms turning into cute, stubby flippers. They clapped against her jiggling body, and the horror soon faded. Each clap was like an artillery strike to her brain, flattening her thoughts into empty oblivion. “Spheal Spheal Spheal!”

Ordinarily, their instructor would have felt some sort of concern for them. After all, it wasn’t every day that an entire yoga class had more in common with the yoga balls neatly arranged in the corner. However, Haleigh had concerns of her own as she choked on two thick, yellow tusks that forced her mouth wider and wider apart.

“Ggghuhk! Hrrrruk! Wwuwhll!” She flapped at her throat, which grew thicker and fleshier, wide as her waist had been moments ago. It widened too, thick and heavy blubber making short work of her skintight top. Her bulging buttocks popped her tights off even without the assistance of her new shell-like tail, and she wailed again at the sight of her enormous, aquatic body.

“WuuhALLREIN!”

If anyone in the class wasn’t fully changed at that point, her echoed cry blasted into her new pod of Spheals, who rolled up to her and began to bark excitedly.

“Spheal!”

“Pphealsphe!”

“Sphealeal!”

Each small bark pulled her further away from her old human life, and she grew thick tufts of white fur along her face that resembled a great big bushy beard. Her limbs shortened to heavy flippers, which clapped against the ground as she tried to escape from the cries of the other Pokemon.

Other… Pokemon? No, she wasn’t like them. She was…

Too many of their barks burst against her brain, and the floor quaked as she flopped her entire massive body against it, over three hundred pounds of flab deciding that thinking was much too difficult a task right now, and she would rather sleep.

Today was the day Chad finally confessed to Lisa. No, not that he loved her or any of that gay shit. He would finally tell her that he was actually legally named Brent. ‘B’ names were rough for any boy to have, because last names so often tended to ruin them. B.O., B.M., of course B.J. was rough too… He could only hope that she still saw him in the same way. And if she didn’t, there were always other fish in the sea.

To amp himself up, he turned up the volume on his corded headphones. He didn’t care if some of his country-pop-rock music invaded anyone else’s hearing space, the only thing that mattered to him right now was Lisa and her incredible ass.

He towered over her, completely missing that her attention was divided elsewhere. “Hey, babe. I know that you like me because I’m 6’5”, and that makes you feel funny, but I haven’t been honest with you.”

Chad wasn’t good at lip-reading, or reading-reading, but he could swear that she said the word ‘my champ’ to him. Hell yeah. That’s right, he was her champ. He grabbed her hips which were oddly firmer than he was used to. Maybe he’d need to tell her to tone it down on some of her squats. He wanted her fit, not gross.

Lisa turned to him, her pale skin almost blue in the gym’s harsh light. Her lips were as full as ever, and Chad leaned down to give them a kiss, closing his eyes. Maybe he’d tell her another day.

His lips met something firm and oddly reminiscent of that one time that he had too much to drink and his frat bro was just playing a prank and there was nothing weird about it honestly. Confused, Chad opened his eyes to find himself face-to-face with muscled blue pegs, which stretched Lisa’s crop-top.

Her arms, now easily twice as large as they used to be, wrapped securely around his waist. Much to Chad’s distress, he found he couldn’t break free of her. The effort dislodged one of his headphones, letting him hear Lisa whisper another long, sultry “Chaaamp.”

This stirred something inside of him, a knot of something settling in his chest. It was like when he’d asked that one girl to prom, Stacy or Linda or Megan or something. Only this time, the anxiety felt almost… Soft?

Lisa squeezed him in her arms, hugging him tightly, shuddering as two more arms burst from her sides, tearing through her crop-top. She smushed these hands, which were already a little rough from the calluses that came with lifting weights, against Chad’s head.

Part of him knew that it was wrong. But more of him wanted to feel more of this, wanted to be putty in her arms. He was dwindling down in every way imaginable, not only losing muscle but also losing height. Soon he was looking up to Lisa’s broadening, firm jaw.

It looked good on her. After all, even female Machamps were so studly and… Wait, where did that come from? He wasn’t into being picked up by a strong Amazonian Pokemon and smushed against her boobs and manhandled relentlessly like a toy because-

Okay, maybe he was into that now, and getting even more interested by the second.

“Teddy,” He squeaked, a shiver passing through his body at how right it sounded. Apparently Lisa, or the Pokemon that had been Lisa, found it appealing too. She picked him up with ease, letting his stubby legs dangle from the ground, and pressed her large lips so firmly against his face that the kiss stretched his head out into a cute, ursine muzzle.

Ursine… “Ursa… Teddyursa!” His eyes glazed as his admittedly low capacity for thought grew even lower. Soon he was nothing more than a barely-sentient cuddletoy in the firm embrace of someone he’d fully been planning to toss away.

Laquesha had been preening for her camera, a sultry smile on her lips. She pursed them with the confidence that comes from knowing she’d get enough ad revenue to cover her gym membership; then squawked as they hardened into a large bill, with a thick pouch flopping beneath it. “Pelipper!?”

Coupled with the intense panting and whinnying from the intercom, her own cry ensured the other ‘gymfluencers’ soon joined her.

A cute blonde turned into an even cuter Ducklett, her thick and white feet clapping against the gym’s mats as she tried to balance with wings. She flapped her former arms, squawking in surprise at her own reflection. She was close enough to the mirror that her own cries bounced back into her feathery head, and she soon found herself more interested with preening her feathers.

An impressive-looking lifter found his heavy arms getting thinner and thinner, almost feminine. His bald head was soon adorned with blue flowing locks that draped along his round simian ears, and a blue ruff of fur covered his frailer body like a dress. He hooted out a distressed “Simipour” but could do little else.

Ironically, as the gymfluencers around her all went from thirst traps to Water-types, Sarah found herself shifting from a plain, shy girl who just wanted to work out into a far more toxic personality. Her thighs bulged, and she slapped her lengthening fingers against the ground, forked tongue flitting from her lips as she tasted their panic.

Of course they’d be panicked though. They weren’t nearly as hot as her. A conniving thought slipped into her scaly head, and she curled her growing snout into a sultry smile. Her flat chest took on a generous swell, and a long tail swept at the ground behind her, mirroring her irascible hunger for a mate. “Ssssalazzle,” she hissed, tasting a human who hadn’t yet started to change.

Lilly had the poor luck of standing next to a speaker when the first cries came bursting through, loud enough to obliterate her human mind near-instantly. She wobbled in place, legs no longer steady even though she’d only just started squatting.

Barry looked up to the speaker curiously, then returned his attention back to his stretching. It probably didn’t matter, and it wasn’t like him to comment on it. Probably just some kids playing a prank, no reason to come out of his shell.

The two of them were strangers, who became suddenly, intimately acquainted as Lilly bumped into him, a bounce in her every step. He looked to her curiously but before he could get a word in she snorted in his face, her eyes glazed.

His legs locked up immediately, at total odds to her constant bobbing. She bumped against him again, and he fell onto his back with a hard clacking impact that sounded almost like someone had dropped a plate onto the floor. He didn’t feel the impact either, it was like his back had turned into something firm and solid.

“What the-” was as much as he managed before she dropped onto him, slamming her perfect, shapely ass against his crotch. Shy or not, he was as red-blooded as any gymgoer, and he couldn’t help but have a natural male reaction to it.

Said reaction shifted for the unnatural almost immediately, as a hard, pointed spike burst from his gym shorts. Lilly didn’t even notice, dropping herself onto it and letting out a nasally squeal so intense that it flared both her nostrils out inhumanly wide.

For a moment, Barry thought he’d hurt her. Then he noticed it was quite the opposite. Even with how sharp that spike looked, it didn’t seem to hurt her whatsoever. Quite the opposite, in fact – everything between her legs was now smooth and gray, dimpling around his sensitive stake before sending her springing back up.

His whole body felt weak, his world started to spin. He tilted his head towards his arms to find that there was a good reason for it – there was nothing there. That numb feeling in his back was spreading everywhere along his body, and he watched as his shoulders started to curl upwards towards Lilly.

She looked down at him excitedly, struggling to snort out some word but never quite getting there. Instead, she drove upon him again and again, spearing herself so deeply that she could feel his spike full her to the back of her throat, before bouncing up so highly that her feet left the floor.

Her legs twisted midair, curling and twining together into a firm spiral. The rest of her body swelled as they did, like the winding motion of her legs was somehow inflating her into a near-sphere. Her little arms wobbled at her sides for a moment, then she dropped hard onto him. It felt good, felt right. Her ears shot up to the top of her head, her hair balling up into an orb.

Adam’s world kept slowly churning, his head turning as it slid towards his chest. His legs had thinned away to two small stumps. They darkened to a purplish gray and clacked slightly against the ground each time Lilly’s body pushed against him. The rest of his body grew knobbled and hard, like coral around him.

No, not quite like coral… Like a shell. His eyes went wide, as did the rest of his head. His facial features simplified into a dark ball, which finished its slow turn, settling so that the world was upside-down around him, and his spike was now just over his head.

“Cloyster!” He gasped, the word driving the last of the humanity from her bouncing form. Whatever scraps of clothing she still had on her flew off as she properly rounded out, her head and spherical chest merging into a single cute ball, her mouth disappearing too.

With a loud snort, her nostrils finally settled into a twitching, piggish nose, through which she snorted a delighted “Spoink!”

Lindsay fanned at herself, the sauna’s heat growing almost unbearable. She could swear if it got any worse, she’d melt. But of course, she’d been dared into this by her girlfriend. She squeezed her eyes shut, pretending that she couldn’t feel herself turning into a puddle of heat.

Little did she know, Wendy had already passed out. Even unconscious, her body still heard the cries coming from the now-literal changing room. Her body started to lose some of its definition, oozing into a denser, heavier blob. Rolls of fat turned into rolls of dense, flowing goo which dripped from her bench onto the floor below.

Lindsay’s first idea that something was wrong was when she felt part of Wendy’s changed body ooze against her... Foot? It felt like where her foot should have been, but she didn’t understand why she couldn’t wiggle her toes. She leaned over and cracked open an eyelid, finding a strange mix of red and purple goo on the ground beneath her. Then she tried to move her foot, and the red goo twitched in response.

The shock of seeing her changed body was enough to heat her skin, and the sharp sizzle of it woke Wendy from her heat coma. “GUH! Hhhrimer!? Grimergruh?” Still struggling to wake up, her mind was all the easier to reshape. She spluttered wetly, melting away into a sentient puddle of purplish ooze that would be poisonous to almost anything.

Anything, of course, except for the magmatic heat of Lindsay’s changed body, which liquefied from the proximity of Wendy’s cries. One second, Lindsay still resembled a human, albeit one sculpted of lava. The next, she lost her shape, dissolving into a puddle from which a sluglike face soon emerged.

“Maaa… Maaaa…” Linday couldn’t think of anything else to say, mind broken from the complete utter loss of herself. The worst part was that near-constant heat, flowing through her, burning away at her soul.

Thick, cool lips splashed against her own, the Grimer finding a pleasure in the oddly clean heat from being so close to Lindsay’s body. It was like a dense, liquid blanket, quenching the flames of her body and sending pleasure through Lindsay’s new world.

“Maaahhhh…” Lindsay moaned, two blobs of her own magmatic slime dangling from her cheeks. She didn’t have features other than her face, so she didn’t know what specific part of her puddle-like body felt so good. She just knew that she wanted so much more of it. Her eyes rolled back, mouth yawning wide.

Of course, what else was the curious Grimer to do than to shove literally her entire head into the Slugma’s mouth, moaning out muffled “Grimer”s within her body that swelled into small bubbles of magma, each of them popping with an echo of her sensual cries.

It was hard to say which of those contained the last of Lindsay’s thoughts, though at that point there wasn’t much left to change. The Slugma closed her mouth over her Grimer girlfriend, feeling that knot of tingly cool pleasure deep in her belly, only to ooze forth out from her back, splashing against her in a warm hug.

Oblivious to all of this, Bob trundled out a laundry hamper full of gym towels stained with what he hoped was just sweat. His heating aid was firmly switched off, mercifully deafening him to the annoyance of hearing the same ‘classic rock’ station play emo songs from his youth—and mercilessly deafening him to the approach of the feminine lizard behind him.

The Salazzle’s strong arms spun him around in her grip, and her tongue shoved past his lips. She purred her name into his mouth, and through the vibrations in his teeth, he tasted her name. As it turned out, hearing a Pokemon’s name this way was just as effective as hearing it traditionally.

Bob fell apart mentally from her touch, a janitor’s life not suited for such a spontaneous sultry encounter. Then he fell apart literally from her name, his brain struggling to understand what a ‘Suh-Lazz-Ull’ was, but his cells replied to it instinctively.

He could feel himself splitting from the inside out, organs detaching yet remaining connected through a psychic connection. The only thing holding them together was his skin, which crinkled as it started to condense into green plastic.

The Salazzle holding him churred in disapproval. She was hoping to turn him into a mate, and not this garbage. But on the other hand, he tasted ever so wonderfully like noxious poison, so she just might have a use for him. Her tongue swirled deeper within him, stirring around in what was once his stomach.

Bob’s sense of self dwindled, massaged away by the firm touch of her fingers on his baggy body, and the feeling of her forked tongue rummaging around his insides. He was much less ‘Bob’ and much more ‘Bob’-ish. Hm. Bobbish. It was close to right, but not quite there yet.

His teeth sharpened into slight fangs which nipped at her tongue, a dopey look settling across his features. She pulled her tongue back, a bit of something still on her tongue. It looked like trash, but it came from inside him? He didn’t understand, but still moaned as she kissed him again, dragging her tongue against his teeth to clean it.

A toxic heat spilled from her mouth, and she started to inflate him from the sound of repeating her own name again and again. “Salazzle. Salazzle. Sah. Lazz. Le.” It was too much for his baglike body, which burst twice at his sides. Trash in the shape of arms flapped at his sides feebly.

Of course, he gulped down the rubbish. That’s why he was Trubbish. He didn’t even recognize the miracle that he got his hearing back, instead to immersed with being the Salazzle’s plaything.

The Salazzle looked at her new toy, amused. He’d make a good pillow. Maybe she’d breed atop him, smothering her face beneath her scaled ass when she finally found a pitiful male Salandit to dominate. Speaking of…

She tilted her head skyward, tasting the air. There were so, so many promising males, and all she’d need to do was whisper her name into their ears…