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Atari's Gym: Unrivaled

By Danath

Characters © FloofNinja

Written during Freebies Vol. 89: Just Plain Rude! Edition

* * *

Caleb ducked through the employee exit at the back of the gym.

"Yeah, see you later!" he called to one of his coworkers as the one-way door swung closed and locked automatically.

The hulking sabretooth turned around and grinned. He really liked his new job as a trainer at this gym. The clients were great - in fact, many of them followed him from his old gym - and the other trainers were a blast. He hadn't met the owner, Atari, more than two or three times, but he'd seen him around the gym over the past two months. Compared to his old job, this place was a breeze. He was making better money, had better hours, and he'd even added a few dozen more pounds of muscle thanks to working out with the other trainers.

The sabretooth's sleeveless tank top dug into his soft, well-groomed pelt, causing some tufts to splay upwards around the outer swells of his enormous pecs. Dark orange fur covered his back and arms, but a lighter, creamier white fuzz coated his slab-like pecs and indecently carved abdominals. The tank top stretched around his midsection - long enough to reach his hips, but not nearly wide enough to accommodate the thick feline's powerful musculature. His swollen shoulders and cream-furred muzzle glinted under the streetlights as he walked to his car.

He parked around the corner from the gym down a narrow one-way street surrounded by tall, windowless buildings on either side. It was probably meant to have been an alley, but everyone parked there. This late at night, there was only one other vehicle, but it was parked behind his. Caleb's eyes flicked across the darkened windows and the corners of his muzzle pulled down in the corners. He unfortunately recognized the car, and as he approached his vehicle, the doors opened and two enormous figures stepped out.

The one getting out of the passenger side he recognized as Riley, the owner of the gym he used to work for. The Rottweiler's shoulders and biceps bulged with muscle. Shirtless, his tight pelt squeezed in around the mountainous bulges on his chest and abs. When he walked around the end of the car, passing through the headlights, the Rottie's gym shorts sagged down, pulled tight by the weight of a huge pair of balls, while the outline of a curved over shaft tented out above.

The other he didn't recognize, but the male was nearly as big as Riley. Whereas Riley was going for pure poundage, the other male attempted to be more thoughtful about sculpting his muscles and had an elegant air about him. Or rather, a haughty attitude, Caleb thought. He immediately recognized the vainglorious type.

"Well, hell, Caleb," the Rottweiler said. His wide muzzle shook at the jowls as he stood next to the other male. "Fancy running into you here."

"Were you really sitting out here for hours waiting for me?" Caleb asked. "Wow."

The stag standing next to the Rottweiler growled and stepped forward. Bare-chested like the canine, the stag's eyes glinted as he threateningly lowered his head, showing off the massive rack atop his head.

"Yeah, I see why you don't like him, the little smart ass," the buck said. "So what, we doing it now?"

Riley grinned, baring his long canine fangs at the smilodon. He leaned an arm on the stag's shoulder and nodded.

"Oh yeah. After this traitor ran off with half the customer list, it's about time I pay him back."

"Ran off with? I didn't even tell them where I was going. You did that when you got mad and posted it all over the gym's social media," Caleb said. "This is embarrassing. You're here to intimidate me?"

"No, something more than that, traitor," Riley said. "But I'll tell you what. I'll give you one last chance to reconsider. Come back to the gym, Caleb. Work for me again. We'll have good times, just like we used to."

Caleb shook his head immediately. "No way. You guys are skimming off the clients and I don't want any part of it."

"Such a shame... do it, Trent."

The stag's lips spread in a wide grin. His huge chest filled with air as he took a deep breath, then lunged at the surprised sabretooth. Caleb grunted as he felt his entire body lifted and then slapped down into the concrete, cracking the sidewalk slabs under his weight.

"Oof!"

It didn't really hurt, but the wind was certainly knocked out of him. He growled and bared his huge sabretooth fangs as the stag leered down at him.

"Oh, yeah, that's the look... I love that look!"

The stag's heavy bulge surged against Caleb's belly and he felt his power being drawn away, pulled slowly but firmly into the stag's body.

"Ahhh!"

Caleb's hips wriggled, but he couldn't move as he felt the huge stag's chest grind down on top of him. The enormous male bulge dragged side to side as the power drain continued.

"That's it, Trent!"

Caleb closed his eyes and focused, trying to reverse the flow, but it was like trying to stop a river with his paws.

The stag grunted and then tightened his grip.

"Oh? Heh... too bad that won't work on me, kitten. I'm far too strong for a wimp like you!"

Caleb's chest heaved as he felt the stag's thickness grind against his thighs and his own quickly growing arousal. Despite himself, he couldn't stop the pleasure that came with his muscles being slowly, firmly taken from him, shrinking him down by several inches all around while bulking up the stag.

"Hey, don't forget our deal," Riley said, walking up and grabbing the stag's shoulder.

"Yeah, I won't forget... here, have a taste!"

The Rottweiler's eyes closed as the sabretooth's muscles flowed into his own body. His shorts stretched and his fur splayed as he began to thicken up all around.

"Oooh, fuck, that feels good!" the canine growled. "Quicker! I wanna drain him and get out of here so I can go enjoy myself properly!"

As Riley's paw rubbed the thickening knot filling his gym shorts, the stag's fingers dug into Caleb's pelt, holding his arms in place as their immense pecs squeezed together.

"Just hold on tight... once I start pounding this cute little kitten, you'll get all the muscle you can handle!"

Caleb tried to fight back, but the stag was just so big... so powerful... overwhelming... the big male's scent flooded the sabretooth's nose and he squirmed as he felt the thick arousal push between his legs, sliding along his baggy shorts.

"Yeah, go on... stick it in him! Shrink the bastard!" Riley crowed, watching closely as the stag's shoulders shifted and tensed.

"Stick what in who now?" a new, deep voice asked.

The Rottweiler and stag both stopped and lifted their heads, but the voice came from the other side of the car, so they had to try to see past the bright headlights. All they could see was a silhouette, but it was a substantial one.

"Oh, hey, Caleb. Need a hand?"

The Rottweiler got in front of the shadowy figure.

"Hey, fuck off! This doesn't have anything to do with yohmmrk!"

Glass shattered and the door of the car dented inwards as a white and black paw grabbed the canine by the head and thrust him to the side. Dazed, Riley slumped to the ground and rubbed his head as the large figure advanced.

Sensing something more dangerous than Caleb at the moment, the stag got up and stood straight and tall, and was immediately disappointed to realize that despite his towering height, he was still shorter than the immense white tiger that strode into view of the headlights. A t-shirt with the Atari's Gym logo distended across his broad chest and belly, while his black trunks were pulled away from his lower belly entirely by the thickness of the package bouncing and sliding side to side within.

"That's my employee you're fucking with," Atari growled.

"So?" the stag sneered. "Stick around and I'll drain you too. Then I'll have a pair of sloppy kittens to suck my cock! Hah!"

Atari's muzzle curled into a grin. The enormous cat lunged forward and the stag followed suit. Locking hands, their hooves and claws dug furrows in the street as they grappled.

"Nngghhh... hey... wuzzat..."

Riley managed to get to his feet and stared at the giant stag and tiger. The two behemoths flexed, biceps bulging, as fur and pelt rubbed together. As the Rottie watched, they jockeyed for position, grunting and gasping as their paws and fingers searched for the best hold to try and trip the other up. The tiger's feet moved surprisingly quickly, just dodging out of the way of the stag's sharp black hooves as he stomped at the ground, while the stag found it hard to move when Atari managed to get a hand in his horns and around his neck.

The canine was about to charge in when he felt arms around his hips.

"Oh no you don't!" Caleb growled.

The sabretooth squeezed and the Rottie gasped, eyes going wide as he felt his feet leave the ground. His legs swung outwards as Caleb bent over backwards. Riley hit the hood of his car, denting it severely from his head and shoulders, then sprawled across the corner so that his legs hung down the front tire. The sabretooth quickly stood and backed up a foot, watching to see the canine's reaction.

Riley swung a paw, swiping with his claws, and then shoved himself off the hood with a grunt.

"Gonna take more than that to put me down, Caleb," he growled. "You're lucky your friend showed up when he did or you'd already be choking on my cock!"

The sabretooth chanced a glance over at where the battle of the titans was playing out. The tiger's fingers strained around the stag's as they bared their teeth and pushed hard, trying to find the right moment to break the grip and go for their opponent's center of balance.

Caleb grinned at Riley and shook his head. "This is why nobody likes working for you, Riley. You don't play fair."

The canine's shoulders tensed as he shook out the last hit, and he squared up with the sabretooth. "You're damn right."

The two met with a solid thud. Caleb, despite having been partially drained already, managed to tip Riley backwards, and both gasped as the Rottweiler's dark black backside into the wall of the building. Their chests and bellies squeezed together as they fought for solid wrist holds with each other; between their hips, their gym shorts flexed and grew, filling out as the rapid, rough friction forced them both to arousal. Breathing hard, the sabretooth's thick orange and white pelt floofed up, and with an extra hard thrust, he managed to tip Riley off balance.

The canine thudded onto his chest and stomach on the street as the sabretooth twisted, and the feline ended up on top of the canine. Riley grunted as his arms were both twisted behind him, and then Caleb's impressive biceps shoved between, putting the Rottie into an inescapable full nelson. The tiger's eyes widened as he felt the canine's thick, hard, muscular glutes grinding across his half-hard package, then he growled as he turned his head to watch Atari. He couldn't get distracted by the tight dog rump yet, though he was already starting to leech the power back out of his former boss's big, muscular figure.

Atari and the stag broke apart, moving a few feet away, before rushing back in to try again, only for an unstoppable force to meet an immovable object. The tiger's chest heaved, his thighs thickened and went taut, while the stag's hard belly contracted and his neck strained. No matter how they tried to wrestle the other into submission, their massive bodies stayed upright. It wasn't until Atari reverted to something akin to a sumo move that the stalemate broke: he grabbed the stag's shorts at the last moment and squeezed.

Hard.

The stag's eyes nearly popped out of his skull, but the big tiger just grunted, adjusted his grip, and flexed his biceps to pull the stag in closer while his grip tightened. The stag's fingers curled and his tongue popped out of his muzzle as he closed his eyes and wriggled desperately. It was almost funny to see such a powerful, huge male dance and hop as someone tugged on his balls to the point of desperation.

"Oh, so you're trying that instead?" Atari asked, sensing the stag trying to steal his power through the touch. "Hmmm... too weak."

The stag's breath caught in his throat. His shorts surged, his full arousal going from half-hard to dripping in a few heartbeats. His thighs trembled and his chest shook as the tiger turned the tables, and the flow, to a degree the big stag didn't expect.

"NNnngggghh!"

"Mmmhh... oooh, yeah, that's right," Atari grunted. "Good boy. Now, how's Caleb doing? Let's see..."

The sabretooth was doing very well. Riley's head just poked out from the bushy thick fur surrounding Caleb's huge, muscular pecs, which were already back to where they'd started and then some. Quads and hamstrings shifted the pelt on his legs as his claws dug into the concrete, propelling his hips forward and sinking the oversized, incredibly thick sabretooth tiger cock deep into the whining Rottweiler. The direct contact made the flow of power even easier, and Caleb shuddered as he felt his body growing. Each deep hump elicited a sharp whine from the stretched Rottie, whose legs twitched and squirmed as his backside clenched around Caleb's thick cock. The sabretooth groaned and leaned forward, putting the weight of his chest on the shrinking Rottweiler's backside.

Riley howled as the sabretooth's hips pumped down, filling him harder, faster, quicker. His tongue flopped out and his toes curled, while under his thighs, his huge cock pointed backwards and sprayed thick ropes of seed. The Rottie's huge dick wasn't huge for long, though, as Caleb's hard pounding continued.

"Ah, he's doing just fine," Atari grunted, turning his attention back to the stag. "Now, as for you... I think I better make sure you don't go around causing trouble again..."

Visibly shrinking, the stag's head lolled backwards as the weight of his own horns proved too much. Falling backwards, he ended up on his hips with his head craned back and his muscular - for now - chest rising and falling rapidly.

Nearby, Caleb's muzzle hung open as he panted hard, just barely aware of his surroundings as he plunged away at the tight, hot, wet hole under him. Fuck, did Riley feel good. He'd dreamt of doing this with the big dog - it was why he'd worked for him in the first place. But being able to take the big canine's muscles and pound him raw? Caleb licked his lips, clenched his fingers, and thrust in again, holding himself as he seeded the Rottie's belly with a huge load of tiger seed. Rivulets of jizz rolled down Riley's shrinking waist as the sabretooth's claws dragged through the thin fur on the Rottie's backside, which was now much smoother and curvier than before.

Caleb, for his part, was adding pounds by the dozen. Riley was a rich source of power and Caleb was determined to take every ounce after what the canine tried to do. His hips moved again, resuming the piledrive thrusting that rocked Riley forward against the hard concrete each time. The small Rottie's head was now almost completely enveloped by Caleb's thick pecs, which were so big they formed cleavage for the Rottie to slide between. Caleb shuddered as he felt Riley's ass squeezing and clenching, so he leaned back up onto his knees and grinned.

The skinny, curvy little canine moaned and wiggled on the sabretooth's huge shaft. Caleb's cock was thicker than Riley's thigh, and it brutally surged forward, filling the much smaller, shrunken male with foot after foot of powerful, eager tigershaft. Caleb's fur bushed out again as he wrapped both hands around Riley's hips and bounced him, using him like a toy. At least the noises the Rottie was making sounded like he was enjoying it. Similar to the noises the stag made.

Deep, guttural moans and pleas echoed down the alleyway as the huge white tiger mounted the stag from behind and above. The buck shrunk even quicker than the canine did, and Atari grew just that much quicker, swelling until his gym t-shirt tore at the neck, then split down the front. His beefy pecs bounced out as his paws dragged the buck down to the base of his massive tiger dick until the shrunken male's legs beat against Atari's huge white balls.

Were it not for the massive feline erections currently filling the two transformed males, they'd be quite skinny, lean, and sultry. As it was, with neither Atari nor Caleb appearing to have any inclination to stop any time soon, they were cum-filled femboy messes. Fat, sloshing bellies, wet backsides dripping in tiger jizz, and a burning lust on their faces that they couldn't help but feel flare up within them.

Atari's paws roamed around the small stag for a while, then slid up the buck's shoulders and face before gripping the base of his antlers. A crack echoed through the alleyway, then a deep laugh as the buck's moan followed.

"Yeah, you won't need those big things anymore," Atari grunted. His hips slung forward, impaling the small male to the hilt again, forcing his fat, full stomach to stretch even further, until a fountain of jizz poured from his muzzle and over his own stretched fur. "Mmmmhhh... fuck, you're gonna have fun with the boys at the gym, I can tell already."

The femboy deer squealed and wriggled as the oversized tiger cock ruined his backside, stretching him open and filling him with dozens of pounds of flexing, spurting shaft. Having lost more than three-quarters of his size, the short buck was now less than five feet tall, skinny as a rail except for his excellently round ass, and quickly learning the pleasures of being a full-time, non-stop bottom. Held aloft in the air, his only points of contact with Atari were his rump cheeks spreading over the big, muscular thighs each time the huge paws wrapped around his belly dragged him down. The deer had to reach back, arching his spine, and wrap his paws around Atari's shoulders and neck, digging his blunt fingers into the fur for grip. This straightened his body and Atari grunted as he felt his huge cock grind straight up with even more ease, resulting in the lean little femboy's whole body jerking up and down. His belly distended outwards, showing off the huge bulge stretching him out, as his flopping muzzle opened in a non-stop stream of desperate, aching groans and gasps.

Nearby, Caleb shuddered as he came yet again. It was hard not to every few minutes. Riley's tight little ass clenched so hard it was like the dog was trying to pull him in deeper. Riley's muzzle flopped up and down as Caleb bounced him, one paw around the small dog's neck and the other on his hip. Riley's thin shaft squirted across his plump, smooth belly and Caleb grinned. The canine's legs were stuck straight out to either side of Caleb's wide hips and he watched his his massive shaft thrust in hard, easily forcing the much smaller dog open. The big, muscular tiger's biceps flexed as he groped at Riley's smooth, soft stomach; the canine whimpered as the tiger's powerful fingers massaged the fat tiger cock lewdly bulging him from within.

"Glad you enjoy getting your ass fucked, Riley, because after tonight, I think that's all you'll be able to do anymore. Good luck finding any guys as big as me at your gym, though!"

The Rottie's eyes snapped open as he clenched and squeezed and came all over again, unable to stop squirming as Caleb's paws maneuvered him around, at times grinding him into the huge pecs and other times letting him ragdoll and squirt. The tan fur on the Rottie's stomach stretched as the sloshing inside grew louder, while Caleb feasted on the last few pounds of delicious canine muscle and packed it onto his already huge body, now massively swollen and bloated with additional muscle. Fortunately, Riley wasn't about to complain now that his priorities had been changed. The Rottie wasn't ever going to top anyone, or steal anyone's muscle, ever again - not after this little technique that he'd picked up at Atari's. Unlike Riley, however, Caleb knew he would be responsible with this, and as he turned away from the shuddering and growling little dog beneath him, the tiger's eyes lit upon the bloated stag, currently hanging from the massive white tiger's cock hands-free, idly oozing thick loads from his muzzle as his whole body lifted slowly up and down from the lurching, flexing shaft.

"You almost finished?" Atari asked, a grin on his muzzle. "This one's so fun that I'm gonna invite him back to my office for a little while. What do you think, cutie?"

The deer boy gurgled.

"See? He loves it. I'll probably throw him to the boys in the locker room after. How about you and your cute little guy there?"

"Oh, he's busy running his gym, so I'll just leave him here, I think."

"In that case, how about you stick around for an hour or two of overtime?" the tiger asked. As he spoke, his hand casually grabbed the deer by the shoulder and dragged his wriggling, squirming, stretched hips down the meaty length of black-skinned tiger cock, until he hung limp, draining heavily, in the feline's fingers.

"Sure!"

"See you inside," Atari said, grinning.

The huge gym owner turned and, on the first step, disintegrated the antlers laying on the street under one of his huge paws. The gasping doeboy's muzzle opened and a gush of tigerseed flooded out of his throat as his belly compacted across the feline's enormous, muscular shoulder. Atari's biceps were, at this point, bigger around than the twinky, lean deer's hips.

Riley's cries echoed into the dark sky above as Caleb dismounted, leaving the bloated, inflated, gasping new Rottie-femme sprawled across the hood of his car, ass draining and cock still dripping.

"W-wait!" Riley groaned, ears folding back as he heard his high-pitched squeak in the cool night air. "T-take me with you!"

Caleb grinned and flicked his tail. Steam and musk rose from his bushy pelt as he used a paw to wipe some seed from his half-hard cock before flinging it in a web towards the canine's already messy muzzle. "Sorry, sir, but you don't seem to have a membership," the sabretooth purred in his best customer service voice. "Please come by anytime from 7 a.m. to 5 p.m. to join the gym and get a 24-hour pass."

The end