Shackled Speedster: A Sonic TG Story by SanicTG

 

Here's an older story of mine. It's been sitting in my phone for a while, and I debated uploading it until now. Be warned this story is a fair bit lewder than most of my stories, but if you want to give it a read go ahead. This is also a bit of a shorter story as well. ADULTS ONLY! 18+

Sonic awoke wearily as his eyelids fluttered open. He looked around, only seeing featureless pink walls. 

Where am I? He thought. He noticed he was seated in a chair and went to get up, only to be shackled to it by a series of bands covering his wrists and ankles. 

“Eggman! I know you’re behind this! What, are you too chicken to fight me head on so you knock me out?” He yelled sarcastically. A mechanized whirr from above him made his ears twitch. A strange tube with an attachment at the end of it lowered towards him. A beam of light shot from its tip as it scanned him with a red laser.

“Subject identified. Initializing assimilation procedure.” A feminine robotic voice announced.

“Wait, what?” Sonic struggled as he began to panic. The tube retracted into the ceiling as more compartments opened in the walls. Robotic hands extended from them, reaching towards Sonic. They carefully removed his gloves, shoes and socks, leaving him somewhat naked. “Hey!” He exclaimed. “What’s the big idea?” The hands retreated to their places as another tube lowered again from the ceiling. This one appeared to have a nozzle of sorts attached to the end.

“What are you gonna d…!” The tube abruptly shoved itself into Sonic’s mouth and down his throat. He gagged slightly as the tube bulged and a warm liquid poured into his gullet. He reluctantly swallowed, not wanting to choke. He tried to pull his head away from the tube, but only hit the headrest of the chair. 

Saliva coated his lips as they began to feel numb, suddenly inflating as if being given a dose of Botox. Sonic groaned in surprise, noticing his voice had changed to a higher pitch. The headrest of the chair retracted as a dome pressed against his spines and sealed against his head. He felt jets of water coating them before a cold solution was rubbed into them by the machine. The flow from the tube stopped, before removing itself. Sonic gagged once more as it struck his uvula.

“Phew, at least that’s over with.” He gasped suddenly as he noticed his voice was now that of a woman’s. He decided to keep his mouth shut as the dome on his head pulled away with a gust of steam, an unfamiliar mass tumbling down his back. He shook his head curiously, realizing the machine had lengthened his spines, giving the appearance of long hair. He didn’t have much time to admire it though as a mask suddenly covered his face. A bunch of strange sensations were felt across his face, as devices poked and smeared across his eyelids and lips with various makeup products. The mask latched off of him with another burst of steam, his eyelids feeling heavy. A mirror lowered in front of him, letting him view the machine’s handiwork. 

Long fluttery eyelashes, plump pink lips… Sonic’s face was now completely female. He stared with his mouth agape, in awe of his girly facade. Noticing his lips were now coated in an alluring sheen, he curiously licked at them. A fruity taste coated his tongue as he blushed, oddly aroused by his current state. He didn’t have much time to admire it though as the chair began to segment itself until he was spread eagle. 

A hand approached his midsection with a large corset device. It sealed around his waist and began to shrink at a rapid pace, giving him an hourglass figure. Fat rushed from the negative space, settling in his chest and pelvis, giving him slightly thicker thighs, a perkier butt and a slightly larger chest. His back arched, pushing his chest and butt outwards. He blushed madly as the corset pulled away, revealing a toned core. Then more devices appeared, wrapping around his arms and legs. They began to vibrate and heat up, warping the muscle underneath. Sonic panted helplessly and began to sweat. His shoulders dipped inward, his collarbone becoming more prominent. Next his arms became more delicate and trim, feminine fat giving them an enticing shape. His hands were changed as well, becoming more petite and dainty. Fat was squeezed out of his calves, traveling into his thighs as they began to thicken, his hips curving to adjust for the newly gained mass. Finally his feet shrank, arching slightly so they could fit into heels and other feminine footwear. The devices all pulled away, leaving one exhausted hedgehog.

Suddenly an arm with a beam shot towards him, panning across various points along his body. His skin darkened to a bronze tan, becoming smoother, and more supple. His fur became super silky and plush. The beam shut off as two large suction cups attached to his butt. Sonic groaned in discomfort and slight arousal hearing his female voice. Two syringes pricked his buttocks as they began to inflate and the cups began to suck. Plump squishy masses began to form, becoming a perfect peach shaped ass. The cups sucked harder, giving Sonic more than he could take. They pulled away with a tug, the large mass jiggling into place as it shook Sonic forward slightly. He didn’t have time to think as two more cups settled onto his chest. The suction started as Sonic was pulled forward against them. Syringes poked his nipples as they became visible, growing erect as areolas formed around them. Sonic moaned as fat pooled into his chest, rapidly increasing in cup size. A monitor on the device read A, then quickly C, and then D before shutting off. The cups heaved one more time, straddling the line between D and E cups. They peeled off of him, the now buxom hedgehog panting. He struggled to see over his new assets, but he knew his lower half was quite excited from the whole ordeal. His enlarged shaft dripped with precum as another device approached his groin.

First two hands lowered down to his shaft, one holding a bottle of lube. The other opened the cap while it dripped the slippery substance onto his dick, making it quiver slightly.

“Mmm…” He moaned, his now female voice not helping to calm his erection. The other hand slathered the lube along his shaft, gently stroking it while pumping once to make sure it was completely covered. The hands pulled away as a large device sealed shut against his groin. It started to vibrate as Sonic heavily blushed. Smaller robotic hands began to stroke away at his length, injecting him with transformative nanites that began to break down and change the cells forming his genitals. “Ah!” He gasped as the hands moved faster. His loins quivered, preparing for release. More precum exited his tip, Sonic whimpered and groaned wildly, biting his lip with satisfaction. Finally the pleasure coursed through him as he released. “Oh~!!!” He moaned as cum spurted from his dick, spraying the inside of the machine. 

Afterwards, he felt mechanisms inside the device begin to shift around, a tube encasing his dripping shaft. The device began to compress, shoving his balls inward as nanites began to reform his reproductive area. An opening formed as two lips grew around his crotch. The tube began to cram his length inside, a reluctant moan escaping his mouth. After a few adjustments he was now a she. The device pulled away with a burst of steam, revealing a smooth slit surrounded by a pair of puffy lips topped by a tiny pink nub. Sonic panted, her face flushed red.

As the now female hedgehog recovered, more mechanical hands began to dress her, sliding a pair of silky panties up her shapely legs, followed by a matching bra supporting her large chest. Next the machine produced a pair of white socks and some chunky black boots, a far cry from her familiar red sneakers. She reluctantly allowed the machine to guide her feet into the unfamiliar footwear. Finally the machine produced a baggy prison jumpsuit, guiding her appendages into it and pulling up the zipper just beneath her cleavage. It ended the process by tying her loose spines into a ponytail with a scrunchie before releasing her.

Sonic stumbled to the ground, her new assets squishing uncomfortably against the metallic floor. She rubbed her head as the chair she was previously trapped in quickly receded into the floor, leaving the room empty.

“Well that was… something.” She remarked. Sonic lifted a hand to her new chest, toying with  one of her boobs. The motion aroused her and she quickly stopped, embarrassed. I should find a way out of here… she thought. She felt along the walls, looking for a secret compartment before one of the walls shuddered open, light pouring in. She shielded her eyes, squinting at the new exit. She walked towards it, when suddenly the walls rushed behind her, pushing her out into the open.

Sonic recovered, looking at the sealed wall before turning around. A vast row of female inmates wearing the same outfit as her were exiting similar rooms, multiple balconies and cells stretching on for miles. She put a hand to her mouth, dumbfounded. A guard shoved her along as she reluctantly shuffled forward.

You’ve really gone and done it this time Eggman, she thought.

End

My DA