A Spider-Man Transformation Story

(Spider-Man to Various)

One life for another’s, that was the deal. Or at least, so Mephisto had said initially. Now, he held a different tune: the only thing needed to bring Aunt May to life was the death of Peter Parker and Mary Jane’s relationship. Really, it looked like they were getting off easy.

Peter looked to her one last time, and she smiled back.

“Just find me, Tiger. I’ll always love you.”

Her last words echoed in his skull, then he shook hands with the literal devil. A tremendous crash reverberated through his skull, leaving with them an echo that coalesced into a single phrase.

++It is done.++

 

Peter awoke with a blistering headache, pressing the back of her hand to her head. In that instant, she knew something was wrong.

“Why do I think of myself as a woman…” She began, trailing off as she sat upright, feeling a heavy weight on her chest.

She screamed, though in later days would call it a ‘dignified yelp’. Still, it was enough to get her Aunt’s attention. The matronly woman opened the door to Peter’s room, tilting her head inquisitively.

“Is something wrong, Peter?”

Peter simply grabbed at her breasts, looking down to her hips a moment later, then staring numbly at her hands. She turned them over, looking at the unfamiliar, soft skin. “N-no.” She settled on at length, forcing a smile to her face. “Everything’s fine.”

Immediately, Peter knew what had happened. She wasn’t a genius for nothing, she realized that Mephisto had stolen more than their relationship: he’d stolen away the chance for them to be in a relationship.

Mary Jane wasn’t bisexual, much less a lesbian. The demon had made it so that Peter would be not only forgotten, but worse-unable to rekindle the defining love of her life. But… For that cost, it might be worth it to see Aunt May again.

That’s what Peter had thought for the first year. An entire year, missing a life she no longer had-she didn’t even have superhuman abilities. Luckily, she still had her intelligence and a very comfortable job at the Daily Bugle. J.J. was even nicer to her now, the sexist prick.

By the second year, her will began to erode. She started to want more, wanted to see Mary Jane, to know if the woman was okay. In that year, she’d risen to a fairly high position, high enough to access closed feeds at a whim.

It took another three months to find that familiar red hair, that alluring smile that had captured her heart so long ago. Another month after that was spent thinking of how to approach her, how to tell her that she was meant to love Peter.

Then the night arrived. Peter showed up at the woman’s doorstep, a bouquet in hand and a confession on her lips. She lifted a hand to knock at the frame, then paused at the sight of motion. Her blood ran cold as she saw what it was, and she openly stared through curtains that were meant to be closed.

It was Mary Jane, as she’d expected-and… Someone she didn’t recognize. Peter could tell the guy was buff, a sort of jockish bodybuilder type of person. He was the kind of guy that Peter had thought Mary Jane would never fall for, and yet here she was, being plowed by a veritable bull of a man.

++My my, that hurts.++

Peter turned, finding Mephisto looking to him arrogantly. The demon’s face was turned into something resembling a smile, as though he’d known this would happen. “Enough.” Peter said shakily, her feminine voice hitching. “Stop this, this wasn’t our arrangement.”

++Perhaps not, but… Well, I changed the rules for you. What’s to stop me from altering the deal further?++

Mephisto’s words still had that eerie reverberating effect. The demon’s mouth worked as he spoke, but Peter didn’t hear what he said. Rather, it was like the demon’s words were being placed directly into the brunette’s skull.

“That should be me in there, and you know it.”

++I do.++

“Then do something about it.”

In the moment, Peter realized she had made a grave mistake. Mephisto’s fingers clicked, a wide-toothed grin on his face.

++I shall.++

 

Peter’s world was pleasure, insensate bliss. It took her a moment to collect her bearings, feeling warmth around her body, caressing her, stimulating her. She was still feminine, but something deep inside her screamed to her that she wasn’t female.

Then her vision-or what passed for vision-cleared, and she realized she was a breast. Somehow she could see around herself, though the world lacked in color. She could hear too, which told her that she was currently Mary-Jane’s right tit.

That meant the coarse hand covering her was the stranger’s, and fuck did the man know how to please a breast. His fingers pinched at her nipple delicately, and Peter felt blood flow through her body, stiffening, growing erect much as her old male body would have.

If she had been human, she probably would have climaxed from this stimulation. As it stood, she could only mutely scream in pleasure, mentally echoing Mary Jane’s passionate moans.

She hated it, of course. She hated feeling this good from having her wife get fucked, but there was little else that she could do in this state. Peter jiggled and wobbled, her soft fat kneaded by the man constantly until the pleasure was too great to even think.

Then Mary Jane cried out in ecstasy, and Peter’s nipple stiffened beyond anything she’d felt thus far. Mentally sobbing with passionate pleasure, Peter lost herself to the void of ecstasy, and knew no more… Until the next morning.

Peter came to with a chilly sensation, followed by one of warmth as Mary Jane tightened a bathrobe around herself. The woman waved goodbye to her suitor, then noticed a fallen bouquet on the side of the steps.

“Huh…” The woman knelt down, picking up Peter’s gift and looking it over. She opened the car and read aloud. “There are so many words I wish I could say, but they all have the same meaning. I was your Tiger once, and need to be again…”

Peter cringed mentally. Having heard them aloud, they were less romantic and more creepy, especially considering the fact that Mary Jane probably didn’t even know who Peter Parker was in this universe.

Much to the breast’s surprise, Mary Jane called aloud a name, one she shouldn’t have known. “Mephisto!”

++You rang?++

Peter could still hear the demon’s voice, slipping into her soft breast fat, reverberating through her body.

“Explain this.” Mary Jane held the card out.

++Peter gave you a visit last night.++

“I’m surprised to know he still exists.”

++She, actually.++

“Ah. That explains it. So, what, she just left this and ran?”

++More like… Left it as her body left her. She told me she should be in your bedroom last night.++ Mephisto gestured towards Mary Jane’s right breast, and the woman groped Peter’s sensitive body in horror, nipple tingling as it began to stiffen. ++Who am I to refuse?++

“Oh my God. Change that idiot back.”

++Idiot… Now, there’s an idea.++

Peter blinked as she was made human again, then furrowed her brow. “My head feels funny…” She muttered, before yelping as Mary Jane slapped her. “Like! Hey! What was that even for?” The brunette scowled, putting a hand on her hip.

“You left me. I waited for a year for you, and you never showed up. And now you think it’s okay to walk back into my life?” Mary Jane’s glare was fierce, and Peter knew she had to choose her words carefully.

“But like, I totes love you and stuff…” Peter mumbled, blushing and rubbing her head again. “Uhm… Still head funny feels… You got any, like, Tylenol?”

Mary Jane looked to Peter in stunned shock, then to Mephisto. “What did you do.”

The demon looked sheepish, though in an overtly sarcastic manner. ++You simply gave me the inspiration.++

“Yeah, and now Peter sounds like some kind of moron who couldn’t graduate high school. Come on, do something before she ends up having to strip for money.”

Something clicked in Peter’s brain, and her eyes widened as she watched Mephisto lift a hand. Then he clicked his fingers, and her world changed again.

Now her hair was straight, sleek black strands framing her face as she looked to her tanned skin. “Oh, what in hell.” She muttered under her breath, gawping up to Mary Jane and to the demon. “This is… This is not a good okay thing! I no want Asian!”

++Maybe.++

Mary Jane groaned, massaging her forehead. “Jesus”

++Less of that name, if you will.++

“Right. Sorry. Jeez.” Mary Jane’s tone implied that she clearly wasn’t sorry, and that she didn’t appreciate the demon’s interruption. “Are you serious?”

Peter agreed with her, though she expressed it in a completely different fashion. “Please! Demon, change back to white! I not want to be like this!” The Asian woman clapped her hands together, bowing in a submissive fashion.

++I see no reason to. You’re articulate, in a sense of the word.++

“Yeah, but do you think that she’s really in a good state to listen to what I have to say?” Mary Jane asked, steepling her fingers and pressing them against her brow.

++Of course, of course. Allow me to rectify that error. You’ll have an excellent listener on your hands in no time.++

Another click of the fingers, and now Peter was standing on a pedestal, her whole body numb and cold. She couldn’t move, much less see what had happened to herself. She could tell that she was distinctly feminine, and back to being Caucasian.

“Really?” Mary Jane drawled idly. “A statue?”

++Fountain, in fact.++

Peter could feel water building up in her body, the pressure increasing more and more behind her nipples. She wanted to cry out in pain, or in distress, or in any sort of emotion. She couldn’t manage more than the pouty, sultry look her face was frozen in, even as water gushed from her nipples in a stream, filling the basin below her.

It was a maddeningly uncomfortable sensation. Her breasts were always too-full with water, but the constant stream from them was equally distressing. She could feel it traveling from her feet to her chest too, and it left her in constant torment.

Mary Jane sighed, groaning and looking to the demon. “You know what? Fine. I’m not even going to give you ammunition for this. Just let me explain myself to the fountain, then we’ll go from there.”

++As you wish.++

“Listen, Pete… Tiger… I waited for you, I really did. It was a whole year before I even found… You know what? I don’t want you to know his name.” The redhead looked to the fountain with something approaching pity. “And the thing is, I have needs too. I thought you’d given up on me, and I moved on. It hurt to fall out of love. But pain fades.”

Peter wanted to cry, but instead she only continued to gush from her nipples, the tears expressing themselves as best her fountain body could. Inwardly she was devastated by this news, by realizing what she’d done to Mary Jane.

“I get that you have your reasons, but… You could have at least called.” Mary Jane sighed, the hurt evident in her eyes. “Anyways… Those are my reasons. You might have yours, so… Is it at all possible that we could let her speak again?”

The awkward sensation faded from Peter’s body, and she was a woman again-albeit a naked one standing in a fountain. She pressed against her soft breasts, oddly relieved to have them back, then looked to Mephisto dubiously.

++What?++

“What’s the catch? Why would you return me to normal?” She winced as she said the words, inwardly regretting the fact that she’d just admitted this was normal to her.

++I’m sure you’ll trip yourself up soon enough.++

“Mhmm. Yeah, right.” Peter scowled, then looked to Mary Jane. “The truth is that I’m sorry. I didn’t know that you still remembered me, and”

“And what? You thought it was okay to just leave me?”

“You’re not into women! I didn’t have a”

“I’m into you, Peter. Or at least, I was.” Mary Jane sighed, looking to the ground sadly. “Now… Well, now I’m into”

This time, Peter interrupted her. She’d had enough thoughts of Mary Jane’s suitor, especially after having him grope her entire breast of a body. “Don’t say it. Don’t fucking dare. I screwed up, but you’re the one who screwed around.”

“Peter…”

“No, don’t Peter me! I know that I’m gorgeous like this, I know I could find any guy I wanted. Hell, even that bull of a guy you’re sleeping with right now! Give me a night and I’ll bed a bull just like him.”

++Ah. Perfect. That’ll do marvelously.++

Peter had enough time to gawp in horror at her own words, then her reality shifted once more.

She looked up, her head strangely heavy, finding Mary Jane as white as a sheet and Mephisto on the verge of laughing. “Urrmoooh?” Peter asked eloquently, blinking her cow’s eyes, then looking to her body to find she’d taken an abrupt turn for the bovine.

Worse yet, there was a weight on her back, something heavy an animalistic. Peter pulled in a long drag of air through her changed nostrils, and she realized that he was her mate-no, a bull that was about to mate her.

For some reason, she wanted this, she wanted to have calves. So she offered no resistance whatsoever as her female virginity was taken by a barnyard animal. The bull bellowed in her floppy ears as he penetrated her, the feet of his cock plunging into her canal, stuffing her.

Drool trailed from both of Peter’s lips as she moaned in insensate bliss, rocking back against the bull and swaying her udder. She could feel him so far inside herself, feel his length stretching her walls, making her pussy drip with excitement.

“Mephisto, please, make him something else.” Mary Jane groaned, covering her face as the cow that was once Spider-Man was roughly plowed by an animal.

++I think she’s enjoying it.++

“MOOO!”

++She says she’s enjoying it.++

“I don’t’ care. We both know that’s not Peter.” Mary Jane sighed, covering her face with her hands and blushing as the loud, sloppy bovine sex continued.

Peter ground her fat cow ass against her mate, intelligence dripping from her mind as surely as her arousal dripped from her cunt. Her tail swayed with delight, and she scuffed a hoof at the ground, dopily mooing and moaning with pleasure.

++In a sense, it is.++ Mephisto smirked widely to Mary Jane. ++Besides, I think she was telling the truth… You know, not giving us any bull.++

“What, you tell jokes now?” Mary Jane scowled.

“MOOOOO!!! UHRMOOOOH!”

++She liked it well enough.++

“Just… Zip it, both of you before I lay an egg.”

++Or she does.++

Another click of the fingers, and Peter found herself in a new body. The pressure in her sex was still the same now, if not worse. It felt like something was stretching out her ass and her pussy, and it took her a second to realize she was quite literally laying an egg.

“BUHGAWK!” Peter squawked, feathers literally ruffled as she fanned at herself, groaning. Her beak worked soundlessly as an egg slipped out from her cloaca, joining its kin in her nest.

Mary Jane sighed louder from outside the coop, cupping her face in her hands. “Please… Just… You know what? You’re a demon.”

++Hurtful.++

“Literal, not figurative. You can read his mind, so… Just do that. Just give him what he wants, make it so that we don’t need to remember this, much less deal with it.”

Peter felt an intrusion in her avian head, and the hen clucked loudly. She’d certainly followed enough of the conversation to realize what was going on, and the hen proceeded to think of a desperate, soulful prayer.

‘I just want to be a part of Mary Jane’s family again.’

There was a click, and Peter was back to being a woman, which… Given the alternative, wasn’t too terrible. She patted herself down, then looked around the room, finding Mary Jane looking at her curiously.

“Uhm… Hi.” Peter offered weakly, before grunting. She lost an foot in height, and she wobbled, falling to the ground in a heap. “Hold on… Something’s…”

Mary Jane didn’t reply, instead gazing off into the distance. The woman lifted her dress as though entranced, and Peter whimpered, horrified. The brunette felt like her center of gravity was shifting, like she was sliding towards Mary Jane despite the fact that the floor was level.

“Mephisto! What’s going on?” Peter whimpered, groaning as her body started to dwindle away. Her large breasts shrank on her chest, and her digits shortened to small stubs. It looked like she was getting younger, but… That didn’t make any sense.

++At your service.++

Peter whimpered, looking to the demon, then to the woman. She was being dragged towards Mary Jane-no, towards her sex. Peter realized that she looked more like a girl than a woman now, and given her destination, she had little doubt as to what was to become of her.

“Please! I dun’ wanna become baby! Pweese!” Peter started to lisp as she shrank more and more, her eyes squeezing shut in a tantrum. She kicked her arms and legs even as a warmth overcame her, starting with her legs, wrapping around her hips, encasing her head.

Then all became dark, and Peter found herself surrounded by a warm amniotic fluid. She kicked feebly, but strength drained from her body. Her mind searched for answers, but she was grasping at shapeless forms.

Her thoughts drained from her mind a bit at a time, memories becoming shapeless forms. Soon her mind was blank and empty, leaving her as an unborn child, though that would soon change.

Mary Jane blinked, feeling her belly, then a dampness in her crotch. “Oh! Oh my God… I think the baby’s coming!” She called in distress. Her boyfriend dashed into the room, his muscled form straining at his hoodie as usual.

“Need me to carry you to the car?”

“Very funny, ‘Hulk’.” She sniggered. “Just get me to the hospital so I can get little Tiger here out.”

Behind the happy couple, a demon sighed, steepling his fingers. ++No, no… No quite good enough… Maybe…++

He clicked his fingers.

 

Petra blinked, unsure of what was happening. She sashayed her ample hips, her F-cup breasts jiggling with the motion. The wiry hunk around her arm tightened his grip on her hand for a moment, reassuringly squeezing her hand.

“Hey, you okay?” He asked, concern in his eyes that made her heart flutter with anxiety.

Call her a sucker, but Petra Parker always believed in true love. Let alone the fact that her mother said that true love was the only way she’d be able to stop working, since retail offered little in the way of retirement plans. It wasn’t like she could help it, she wasn’t exactly a model student.

Petra realized that he was still waiting for her to respond, and she giggled anxiously. “Yeah, like… Sorry Tom.” She spitballed a name, and it looked like she chose correctly. The man patted her shoulder, and she beamed with pride inwardly.

“Who needs smarts when you’re lucky?” She giggled, before gasping at the fact that she’d said it aloud. Mortified, she looked to him only to break out in a relieved sigh as he laughed along with her. That was great, she was worried he’d take offense.

“Well, speaking of luckiness…” He left the question hanging.

Petra vacantly stared back, not quite grasping the innuendo. “Yes?” She said after an awkward moment’s pause. She trailed a finger through the highlights of her hair, an anxious habit she’d picked up since seeing it in a movie.

Tom laughed again, kissing her cheek. Her heart fluttered anxiously, and she giddily giggled. “How about we get lucky tonight?” He then asked.

He didn’t need to ask again, the girl rushed him home as though they were at a drunken marathon. It wasn’t that she was a slut, more that she believed in true love, that every guy she brought home would be Mr. Right. And so what if the last twenty hadn’t been, she had a feeling about this one.

The girl blushed as she opened the door to her room, gasping as she saw her roommate on all fours, Mary Jane’s own boy toy currently having his way with her. To their credit, the two didn’t so much as miss a beat, instead motioning towards the bed.

“We don’t mind.” Mary Jane gasped between panting breaths, her breasts swaying with every thrust of her lover’s hips.

“I kinda like an audience.” The jock replied, grunting as he grabbed Mary Jane’s hips, hilting himself in her.

Petra giggled, looking to Tom and beaming as the man dropped his trousers. She knew he was special! She took his hand and led him to her pink-laced sheets, dropping to her knees and licking him to attention.

As she did, a niggling thought began to grow in the back of her head. It was an unpleasant sensation, and one that she remembered having in these types of situations, whenever she caught Mary Jane in the act.

Now, it was so much more real, and the girl got a distinct sense of unease. It didn’t keep her from dropping onto her sheets and spreading her legs, but she couldn’t fight the feeling that something was… wrong.

Tom hilted himself inside Petra and she gasped with bliss, clenching her folds around him and groaning. His hands groped at her massive breasts, thumbs trailing her nipples until they poked back at his digits, erect with want. The girl looked up to her lover, then to Mary Jane, making eye contact with her roommate.

With her wife.

Peter returned to her senses, and she could tell Mary Jane had as well. A series of quick emotions surged across the redhead’s face: disbelief, anger, disappointment, then finally acceptance.

The brunette wanted to call to her, but instead a moan of ecstasy slipped past her lips as her date began to thrust into her. His cock wasn’t particularly large, but it hit her in all the right places, letting her squirm beneath him, relishing the sensation like a woman should.

All the while, Peter felt… Guilt? Humiliation? A crushing mixture of the two. She could tell that Mary Jane was disgusted in her for this, but she didn’t know what had led to this moment. All she knew was that right now she was getting fucked while the love of her life was being pounded doggy-style on the floor beside her.

Or… The love of her old life. Peter realized that Mary Jane had lost herself to this life once more, because the redhead no longer looked at her with scorn. Instead, Mary Jane continued to moan, rocking back against her lover with carnal ecstasy.

Peter’s date thrust into her pussy and she clenched her legs, moaning and jiggling her soft tits. No, her breasts… Was her mind already slipping? She’d been able to remember her old life before now on brief occasions, slipping from Petra to Peter. Each time had been harder and harder to return from, so she feared this might be the last.

Petra choked out a gasp of pleasure, Tom’s next thrust eroding her old name, much of her intelligence going with it. Plans of escape slipped from her mind, replaced with thoughts of pleasuring her lover. Still, she couldn’t help but look to Mary Jane longingly, blushing as she realized that the redhead could hear the brunette’s every groan.

Another thrust stole more of her intelligence, then another. Petra grit her teeth and clenched around Tom’s yummy cock, desperately searching for one last thing to say to Mary Jane, one final farewell. She arched her back as Tom pinched her nipples, squeezing her eyes shut.

“I love you.”

The words slipped from her mouth, and she opened them to look into her date’s eyes. “Fucking hell, I love you! Harder, harder!” She groaned, falling back against the bed, groping her tits as he drove into her again and again and again, until her every nerve sang with desire and fulfillment.

 

Mephisto watched them from a crystal ball, smirking as the two forever lost their old lives. ++That’s more like it. How’s that for a happy ending?++