A Marvel Comics Transformation Story
(Man to Woman to Various)

 

Intro

“A life for a life. That’s the bargain.”

The demon spoke without cruelty or mirth in its voice. Spider-Man could tell that it derived no pleasure from this, that it was simply doing this because that was its lot in life.

He also knew that agreeing to this hellish bargain would be the most consequential decision of his own life. The brown-haired man sighed, having no other choice. If this was the only way to save his loved one…

He held out his hand and gasped as an electric tingle ran through his palm. The demon hadn’t even moved, and already the web-slinger could feel the effects of their accord. Then the creature took his hand in its, shaking it.

Fire bloomed across Peter’s body, and he groaned in… Bliss?

It was an odd sensation, a feeling akin to pleasure trailing along his entire form, like a full body massage. He groaned again, bringing his hands instinctively to his chest, massaging it with both hands-then yelping as he felt a pair of full DD breasts.

Spider-Man’s hair lengthened to his back as he looked down in a blind panic, watching as his costume stretched around a lovely pair of new mammaries. Too late, he realized that the massaging feeling was one of change. His hard muscles were vanishing in lieu of something softer, something curvier.

“What…” He gasped, hearing the sound of a silky, dulcet feminine voice slipping from his plumping lips. His face ached as it reformed into a feminine heart shape, and he blinked with longer lashes in confusion.

Worst of all was the change between his legs, a sharp pulling sensation making him double over. He could feel his manhood regressing, slipping into himself, becoming a set of female genitalia. Then it was done, and the latter half of Spider-Man’s name rang hollow.

“What have you done to me?” She gasped, hating how alluring her voice sounded. Her cheeks burned with shame as she looked down to her body, turning in place and watching as her body flooded her mind with new sensations.

“Correction: What am I doing to you. We’re not done yet.” The devil smiled that soulless grin once more, then opened his hands. A yawning portal formed behind Peter, and the woman yelped as she was pulled into it.

The demon’s parting words followed her: “A life for a life, Miss Parker.”

Her body landed on ground that wasn’t familiar, aching from head to toe with that warm sensation. “Hey… Wait…” Peter offered weakly, a blush creeping across her cheeks. “I… I don’t…”

Cow TF

“I don’t feel moo good…” She groaned, only to blush and cover her lips at the realization that she’d just mooed. She looked down and saw that she was on her hands and knees in the middle of a pasture. Delicious grass rustled in a stiff breeze before her, and the buxom brunette lowered her head to take a bite.

By the time she swallowed, she realized something was distinctly awry. Her heart raced as she retched, tasting the dirt in her mouth. “How could I think that was MMOOO!” She bellowed again, louder now. This time, the vocalization was accompanied by change.

Her hands and feet cramped violently, a harsh muscle cramp settling into her body and eliciting another moo of pain from the woman. She looked down, watching her gloved hands as they bulged, something rippling beneath the surface of her costume.

Then they burst free, a pair of hooves, the two things thumping against the ground and shoving the tattered remains of Spidey’s gloves and boots into the dirt. She gaped in open fear, a few blades of grass slipping from her mouth.

“No! MOOOt a cowMOOO!” She lowed, feeling her lips thicken. As if it wasn’t bad enough that she had just had her gender reassigned, now the same was about to happen to her species. The worst part was the knowledge that she could do nothing about this.

Helpless, Spider-Man feebly mooed as her body expanded, thick fat tearing her clothing free, sending it to ribbons around herself. Her heart ached as it swelled in her chest, and she could feel multiple stomachs settling into her engorged belly.

One of them clenched, and with a look of disgust she spat a wad of cud into her mouth, beginning to chew it reflexively. She couldn’t even chew like a human, instead working her jaw slowly from side to side in a bovine fashion.

With every clench of her teeth, they grew blockier and flatter, forcing her jaw open due to their size. Grass-flavored drool dripped down her cheek as she began to sob, each wrenching convulsion sending a ripple of motion through her fat flanks.

Mercifully, her muzzle began to extend. Cruelly, her skull similarly shrank. A brilliant mind suited for science began to ebb, and Spider-Man screamed out a low bovine bellow as she felt her intelligence forever draining away.

As she tossed her head, and flopped her longer ears in denial, a heavy udder swelled into life between her legs, sloshing with milk. Her human breasts simply receded to nothingness, and she turned sorrowful eyes skyward, as though to curse her fate.

She was… Spider… Hard think…

Her thoughts gradually slowed to a halt, a tail creaking from her backside. She swished it gently, then lowered her head to the grass again, taking a bite of the blades and working it into her mouth. She was hungry, and would need to eat so she could have energy for mating.

Inflation/WG

“I don’t feel so good…” She moaned, hands flying to her backside. Her ass shook slightly as it ached once more, then it began to swell. The woman looked back in alarm, gasping as she saw her buttocks begin to bloat much as her chest had.

“Wait, what the hell?” She whimpered, looking around to her surroundings and finding that she was in a food court. Nobody seemed to notice her, no matter how panicked she looked or how loud she shouted.

Spider-Man knew then and there that this was the work of that demon; that he wasn’t yet done with her. Her cheeks burned as she rose to her feet shakily, off-balance thanks to the new junk in her trunk. If she’d retained her strength, this would be no issue for her. Unfortunately, it looked like her body was now as average as the other mallgoers around her.

Peter made it three steps before losing her balance, yelping as she fell down onto her blimped cushion. It jiggled openly, and she looked back to find it had swelled even more, her cheeks now the size of throw pillows.

“What kind of a change is this?” She whimpered, struggling to rise.

The tight synthetic weave of her outfit hadn’t yet given way, and it didn’t look like it was about to. Quite the opposite, in fact-it was changing to stretchy cotton, the soft texture of sweatpants gracing her plumped posterior.

That elicited a response, and Spidey looked down, observing the strange shift of her uniform as well. It wasn’t just her body then, it was her entire reality that was made malleable. She watched as her top became little more than a Spider-Man fan shirt, a mocking reminder of the person she’d been.

Then her ass swelled again, and she groaned, feeling her thighs now resting on the veritable cushion of fat.

“No, no! That’s too big!” She called out feebly, but it looked like the transformation wasn’t caring about her whims. She rolled onto her knees, huffing as her massive cheeks rolled over her legs, pressing them hard against the ground.

Somehow, all this fat didn’t look terrible on her. Her ass was bloated to at least half the size of her body, but it retained its pert shape, as though someone had simply scaled the size up and undid the effects of gravity on her bloated bum.

Her cheeks burned with humiliation, then they flushed harder as people began to notice her. Evidently this was the extent of her changes, leaving her with an ass that was close to two bean-bag chairs pressed against one another.

Then she saw a couple of mall-goers, two that she immediately recognized. One was Mary Jane, the love of her life. The other was Eddie Brock, looking a good deal more sane than Spider-Man remembered. Her jaw fell slack as she looked at the two, realizing they were clearly on a date.

Desperately, she tried to call to them, to move towards them and make things right. She only attracted a laugh from Mary Jane, one that Peter knew well. It was the laugh her former lover would use when trying to be polite around something she thought was grossly hilarious.

The couple pulled away, no doubt gossiping about the bloated-assed girl who’d tried to get their attention, a girl who now realized the extent of her deal with the devil.

IQ Loss/Bimbo

“I… Um… Like, I don’t feel so, you know, good…” Her hand flitted to the side of her head, and the girl let out an inquisitive moan. “Wait… Like… Am I drunk?”

Her mind felt fuzzy, and Peter lifted a hand to her head. She wobbled in place, looking around and finding herself in a college dorm hall. It both made sense and didn’t, some mental disconnect occurring in her brain.

On the one hand, Peter felt like she belonged here, like this was her home. On the other, she’d realized she’d graduated college two years ago.

The girl wobbled over to a desk she simultaneously felt was hers and didn’t recognize. There was a calendar on it for 2016, and a clock beside that which proudly proclaimed it was 2018. Nonetheless, dates were still marked on this calendar as though they were recent, pertinent information.

“Well… Like, I guess that makes sense. Numbers are hard.” Peter chewed her plush bottom lip nervously, looking up to a nearby post-it note. It had writing on it, and she worked her mouth as her eyes played over the words, reading it aloud.

“Good… Luck… Seventh… Year’s… The… Charm?” Her brow furrowed, and she tilted her head. “Like, seven years? College is only four though…”

She struggled to put two and two together, then upon realizing that was too hard, struggled to fit the square peg into the square hole of this mental puzzle. It came to her with a flash of realization and a chill of horror.

“No way! I, like, can’t be dumb!” She pressed her hands to her head, trying to remember equations and formulas that she knew existed, but now couldn’t place.

Much to her surprise, there was some knowledge in her mind. Spider-Man wrinkled her nose in an attempt to recall, and was greeted with a practically savant-esque knowledge of how to please herself, and how to please a man.

“Noo! Not a bimbo, please!” She whimpered. “Like… I’m all kinds of smart, I’m not a dummy…” She whimpered, clutching her head.

As she fell into her chair, her outfit smoothly transitioned to a tank top and shorts-though it was clear the clothes were once a t-shirt and jeans that had been clumsily cut in an attempt to look trendy. The girl chewed on her lip, immediately regretting the decision she’d made.

That was the worst part about this all: that she could remember. Peter might have the IQ of a zoo exhibit, but she could remember being intelligent enough to work as a literal rocket scientist. She could remember the life she’d lost, and the potential she’d squandered, and would now need to live with that for the rest of her dimwitted life.

Little girl in a cute dress

“I don’t feew tho good.” She lisped, then gasped. Her hands flew to her lips, and she swayed from side to side anxiously, a nervous giggle escaping her mouth.

It was all very childlike behavior, but for some reason it felt right to Spider-Man. She looked around herself, finding that she was in the middle of a playground. It looked like a fun place to be, but didn’t make much sense to her: why would she be here?

She took a step forward, only to wobble in place as she lost a foot of height. Another step cost her another, and another after that. Her body grew softer as she moved, baby fat overtaking the delicate curves of a gorgeous woman.

Peter’s face rounded and her eyes grew wide and innocent, even as her digits shrank on her stubby palms. Her breasts shrank as well, until they were little more than a pair of buds on her flat chest. In a matter of seconds, she’d gone from a drop-dead beauty to a child just a few years north of being considered a toddler.

“I don’ get it…” She pouted. “Whath happenin’?” Again, she lisped.

She swayed gently in place, unsurely. Something was slipping her mind, there was something she had missed… Too late, she noticed the hem of her dress brushing against her ankles. The girl looked down and yelped, realizing that first: she had lost around twenty years of age, and second: she was now wearing a red and blue sun-dress.

“There you are, kitten!” Mary Jane’s voice called, and Spider-Man looked up to find her soulmate running towards her.

“Emmjay! Thummin’s wong!” She whimpered, only to yelp as the redhead scooped the toddler up into her arms.

“You’d darn better believe it!” Mary Jane replied, and Spider-Man deluded herself into having an iota of hope. It was soon dashed as the woman giggled. “You’re not supposed to call your momma by her first name.”

“Momma?” Peter whimpered, wriggling. “No! Dat’s not wight, ahm…” She trailed off, seeing the visible hurt in Mary Jane’s eyes.

A man jogged up to them, putting his arm around Mary Jane’s shoulders. It was Flash Thompson, one of Peter’s old rivals, and jealousy surged in Peter’s chest as he kissed Mary Jane on the cheek. “Hey, babe… What’s wrong?”

“Little Petra… She still doesn’t think I’m her mom.” Mary Jane sniffled, though she clearly tried to force a smile for Peter’s sake. “I mean… I try, I really do, but I know I’m not as good as May.”

“Gam-gam?” Peter asked at the name, only to crinkle her nose. That hadn’t been what she’d meant to say… May was her Aunt, so why did she think that the elderly woman was her grandma? And why did MJ seem to treat Petra like a daughter? And why couldn’t Petra remember anything else.

Petra’s eyes widened as she realized that reality had been overwritten, and that her mind was just now starting to catch up. She could feel her mind regressing just as her body had, a numb encroaching wave slipping over her thoughts as though she was falling asleep, slipping into an eternal slumber of unlearning.

Before the girl could even make a sound of protest, the feeling faded, and she looked up to her Momma with round eyes. “Am sowwy…” She sniffled, guilty she’d made the woman cry.

“Hey, kiddo.” Flash pinched her shoulder. “Don’t worry about it, okay? Why do we make mistakes?”

“So we can get bettew!” Petra lisped, giggling as her Papa took her into his arms.

Somewhere, deep within her, a voice cried out in jealousy and anguish. Then it stilled as the family of three left the park, returning to their quiet home.

Pussy

Whatever words Peter had been about to say were whisked away as a violent wrenching sensation gripped her body. She could feel a warmth around herself, as though she was being embraced, and the pleasure returned to her form tenfold.

Drool dripped from her lips as she tried to moan, but no sound would come from them. She lifted her hands to them, feeling them begin to change; to begin to lift into a vertical slit. Her eyes widened as her fingers plied them, then they rolled back into her head as insensate bliss coursed through her.

Carnal pleasure coursed through her form, and she arched her back, feeling bliss course from her face to her… Breasts?

Her eyes widneed as she realized she couldn’t feel her lower body. She looked back, eyes widening distress as she saw that her lower half was fused to a woman’s groin. It was like she was being absorbed between the woman’s legs, and given the shape of her mouth, Spidey had little doubt as to what she was becoming.

Peter started to get sucked between the mystery woman’s legs, and her heart raced in terror. She tried to clutch at the nearest thing to arrest her motion, which happened to be a fold in what the changing woman realized were bedsheets.

Then she heard it. A familiar yawn, then “Hey, Tiger. Want a little morning pick-me up?”

Mary Jane. It was her voice, and it came from the body Spider-Man was currently being absorbed into. Her eyes widened, and she drooled openly, feeling an arousal that wasn’t her own.

“Fuck yes.” Another voice, this one male. Peter didn’t recognize it, nor did she recognize the coarse fingers that met her face, slipping into her pussy-mouth and pushing her all the way into Mary’ Jane’s crotch.

Peter could feel her hair coarsening into her former lover’s pubic hair, she went deaf as her ears melded with the woman’s groin. Soon she was little more than a pair of eyes and a gaping pussy, clenching in agonizing bliss around a stranger’s fingers, feeling him ‘warm up’ a woman that had once been hers.

Then the fingers pulled away, a thin trail of vaginal drool connecting them to Peter’s quivering labia. Her eyes blinked to focus themselves, only to find herself starting at a rather impressively sized cock. Much to her chagrin, she felt herself wanting this-needing it, even.

Her eyes squeezed shut forever as she tried to resist impulses that she didn’t know were Mary Jane’s or her own. It seemed insane to want to feel a stranger fuck her lover, but it was hardly the strangest thing that had happened to Peter today.

Worse, that gnawing guilt and betrayal clenched at what passed for the new pussy’s soul. She would feel this, would feel Mary Jane being fucked by someone that wasn’t her, wasn’t Peter. She would know that her lover was aroused by other men, and would know exactly how often she’d take them for a romp in the sheets.

This wasn’t what spider-Man had asked for, wasn’t a part of the deal. She’d thought that there might be some coming back from this, but…

The stranger’s cock plunged into the new pussy’s mouth, and she lost all thought. She drooled around him, clenched her walls, felt him plunging so deep into her that he nearly hit her womb. And to her eternal shame, she loved it.