(F to M Behemoth)

“Score,” said Peri, and she meant it. It wasn’t often that she found a working Behemium reactor, much less one that wasn’t accompanied by a set of very irritable, very large Trogolans. Last time she’d tried to magic a reactor away from them, she’d nearly gotten herself killed in the process—but how was she to know that he pig-faced oafs were immune to spellcasting?

She chuckled at the fond memory, brushing a lock of her short-cropped hair from her eyes. Luckily, if this reactor had guards, they were long dead. The crash site looked to be decades old, judging from the cobwebs and rust.

Luckily, Behemium had a half-life longer than most stars. It was one of the many facts she’d picked up as an intergalactic broker, from one of the many drunks she’d conned. There was something she was sure she was forgetting about, but right now the only thing that mattered to her was the score of a lifetime.

The woman hopped down through the containment field, running her usual array of checks. Witnesses? None. Obvious traps? Probably not. Marriageable, tomboyish woman with fantasies of cuddling in an after-hours pawn shop? Regrettably, zero.

Peri chuckled, pausing beside the reactor, imagining how her fantasy would react to discovering she was a renowned kleptomaniac. She’d sit across from the woman, the violet light of the reactor kissing their skin, sending shadows dancing across the ground.

“But Peri,” they’d ask, “isn’t it bad that people know you’re a criminal? That kind of defeats the purpose of maintaining the illusion of an innocent pawn shop, as well as directly countering your much-deserved reputation for overwhelmingly excellent humility.”

“Shut up and kiss me,” she’d growl, casually ignoring a startlingly valid complaint.

“Nnhh-AAH!” A loud moan of pleasure brought Peri to the present, one that had slipped from her own lips. A flush raced across her cheeks as she looked about in confusion, wondering where in the hell THAT had come from.

“This isn’t the time to be getting horny,” she muttered, as a pair of horns slid from her forehead. They were small nubs at first, though soon the enamel worked its way up longer, curvier, to the point where she’d need to duck through low doorways—had she realized they’d grown in.

Unfortunately, Peri was much too distracted by avarice to pay attention to her reflection—though she did notice a frantically blinking terminal.

++Fare: Reaktorlekkasje. Langvarig eksponering vil føre til forestående transformasjon til en Behemoth.++

Peri didn’t even bother to begin trying to prounounce it. She never could understand why Norwegian was the intergalactic common language. Luckily, thanks to a multidimensional portal and some stolen Jupiterian tech, her Samsung had signal.

“Siri,” Peri announced loudly, “translate text.”

A moment came and passed, followed by another. Finally, her phone chimed sullenly. “I’ve told you, my name is Margaret.”

“And I’ve told you, you don’t look like a Margaret. Do you know what you look like? A Siri.” Peri looked down to the phone with a scowl, a small shudder traveling through her body. It was an instinctive reaction, the kind that was perfectly natural given that she now sported a sail-like frill along her back.

“Actually, I look like a smartphone.”

Peri paused, then switched the damned thing off. “Crummy Jupiterians, with their stupid sassy SIM cards. Show you who’s boss.”

She didn’t know why she was so angry, she just was. It was like something inside her had turned her aggression levels well past the breaking point, and she was ready to off on even the slightest—

Peri stumbled over her shoes, falling in an embarrassing heap against the Behemium reactor. It even made a hollow ‘thonk’ for added effect, like the universe itself wanted to turn her life into some twisted joke.

In reality, the universe actually wanted to twist her form, rather than her life. She’d fallen because her feet had grown larger, a rich shade of purple covering what otherwise would look like monstrous paws. At the same time, her spine had wrenched backwards, stretching into a tail that was equal parts mammalian and reptilian. It was furred, but thinly so, and ended in saurian spikes.

It also happened to make it near-impossible to stand on two legs without wobbling like a drunk, and despite a lifetime of practice, Peri was finding it surprisingly difficult. She lifted herself from the reactor only to fall against it, and repeated the process twice more before deciding she’d had enough.

Peri glared down at her shoes accusingly, somehow completely missing the fact that they had been split open by her oversized violet feet. “This is your fault!” She growled, her voice taking on a deeper tone as she tore them from her, throwing them as far as she could.

Normally, they’d have only gone a few feet—and certainly not clear through the rusted bulkhead of the ship. Peri blinked, stunned to silence, mind racing as to how that was even possible. Unfortunately, her mind happened to be a thick field of radiation-induced molasses.

“I… Uh… Guess that gym membership was worth it?” She ventured, curious how she’d bulked up without so much as setting foot in the blasted place. Her eye caught the shimmering hue of the reactor again, and she remembered there were larger things at hand. “Right, bigger fish to fry. And sell. For money.”

She giggled at what she was sure was a joke, a haze settling over her thoughts. It was broken by movement, a glimmer she’d caught in the corner of her eye.

Peri might have been addled by the reactor’s influence, but she wasn’t so slow as to be totally caught off guard. The young woman rose to her oversized feet, wobbled, and attempted to make her loss of balance look like it was intentional. To her credit, the ‘fighting stance’ she dropped into was rather convincing, assuming anyone twelve light years south of the Milky Way could recognize the Drunken Fist.

“I know you’re there! Show yourself!” Peri called, with another hopefully-intimidating wobble. She brought her hands up, fingers weaving a symbol she’d learned from a purloined spellbook years ago. A rather comforting magical glow emanated from her palms, and she lifted them before herself defensively. “I’m warning you! I know how to use these!”

Again, motion—this time to her right. She turned, caught sight of a tail, and nearly blasted the thing with a bolt of energy. As though it could sense the attack coming, it whipped around to her left, flicking with agitation.

Peri could feel it moving, could feel the warmth of her own attack coming so close to singing what was undeniably a part of her body.

Her eyes went as round as saucers and she let out a gasp, checking her butt. Sure enough, she was met with the base of her new appendage, in all its purple glory. She stared. It flicked. She stared more.

Finally, she placed a trembling palm against the reactor, breathing heavily. “N-no way. That had to be an illusion, right?” She laughed to herself anxiously, huffing as her ribs contracted, then expanded. They grew to a bulk befitting of something not entirely human, which she tried to pretend was just her imagination.

“I mean… I couldn’t possibly be… Um…” She struggled to find the right word, failed, struggled to find a replacement, failed again, and decided that there were more important things to do. “Well, whatever. A bad thing’s happening to me, but I can fix it back on my ship. Probably.”

The plan sounded rather intelligent to her, which was quite remarkable given how stupid it was. “Oh, and I need my prize. The shiny Behemy-reacty-thing.” Peri chuckled, reaching towards it and grabbing the reactor in a bear hug.

She tried to lift it, forgetting the fact that it was still bolted rather convincingly to the ship’s deck plating.

Despite the reactor’s complete lack of motion, Peri kept trying. She pressed herself against it, smallish breasts squeezing against a glass containment field, heedless of its potent influence. As though it sensed her proximity, the reactor flared with a warm, soothing light.

For the second time that day, Peri found herself inexplicably aroused. Her womb ached with a need that was totally unfamiliar to her mind. Rather than craving to be filled, she wanted to fill something. She wanted to press against someone soft and warm, and engulf herself in its presence.

“Ahh… haah…” She panted, her breath fogging up the reactor’s glass. It distorted her reflection just as her visage began to twist, feminine features taking on a bestial, carnivorous appearance. Her lips darkened and swelled, sharp fangs slid from the top and bottom of her jaw, and her nose upturned on what was rapidly turning into an impressive snout.

“Horn... eee…” Peri let out a dimwitted whimper, blinking her eyes repeatedly and wondering what the purple in her peripheral vision was. She set that to the back of her mind—rather simple, given how roomy it was in there—and tried to focus instead on the task at hand.

Said task at hand was changing her hands. Delicate fingers twitched and spasmed as they swelled. Her palms pulled towards the tips of her fingers, swallowing much of their length and leaving her with oafish and bulky paws.

Still, that was nothing compared to the feeling in her groin. She pressed against the reactor, breath coming faster, hotter, harder. She stiffened in more ways than one, a new and firm growth sliding from her pussy, tugging it towards her chest.

Her sensitive labia darkened, engulfing her growing cock in what was undeniably a sheath as dark as her horns. Unlike them, it was soft and tender, stimulating her new sensitive prick. A pink head poked from her waistband, and she pressed her belly against it, mashing it between her and the reactor.

“Y-yeah… Like that…” Peri groaned, pumping her hips forward. Bolts around the reactor snapped, and it came loose in her swelling arms. Her muscles rippled, pulling her shirt taut around her and allowing her sail-adorned spine to pierce its soft fabric. It split easily, falling to tatters beneath her as she hugged the reactor tighter to herself, keeping it from falling.

“Oh. It loose.” She giggled vacantly, avarice returning to the forefront of her mind. A wide, rictus grin split her snout, and she leaned back, lifting the reactor as though it was a child’s toy. “Good. Go back to ship with it. Peri make lotsa money.”

She lifted the machine from its housing with a single arm, driven by greed. She pressed a meaty paw against hew new sheath, playing with her cock, consumed by lust. She cracked her horns painfully against a low-hanging door, and found a new sin to indulge.

“HRRGHHRAGH!” Peri reached back with one arm and punched the doorway. Where once the action would have fractured every bone in a girl’s arm, now a behemoth’s fist drove through the frame. The ship around Peri shuddered, and the behemoth looked up.

Peri had done this. Peri had transcended the form of a weak human female, and was now a male behemoth. He breathed through flared nostrils, stroking at himself with an idle curiosity. What little thoughts remained in his mind were driven from him in a frenzy of passion, and he set down the shiny thing to better please himself.

Before, the radiation had changed his body. Now, the behemoth was able to drink it in, absorbing the violet energy. He tore through the last scraps of cloth on his body, better exposing himself; allowing himself to reach the spot he so desperately craved.

Using paws to stroke at his sheathed cock was clumsy, inelegant, and difficult. But it wasn’t impossible. He pressed the pads against either side of his length and found himself humping into them, grunting with exertion. Dislodged by the motion, what were once ovaries dropped low into a thick and dark scrotum, swaying below the behemoth’s massive frame.

“Uhn… uhn… close…” He growled, the last human word that would ever leave his lips. “Murghh… Rgghh!”

The mangled groan was similar enough to a word to flicker on a forgotten woman’s phone. Its screen dinged, and a female voice pierced the haze of the behemoth’s pleasure. “Could you repeat that?”

Very, very little of Peri remained in the beast. There wasn’t enough to remember being a woman, and there certainly wasn’t enough to remember his name. However, there was just enough to remember a deep-seated hatred for Jupiterian operating systems.

His tail slammed down onto the phone’s screen, obliterating it. It felt good, rewarding the behemoth on a base level. He arched his back and leaned into his pleasure, even as a thick mane of brown hair erupted from his neck.

Left finally, truly alone, the behemoth was free to hump into his paws harder and harder, faster and faster. His face fell against the reactor, and he nuzzled it with a furry cheek, leaning into it and pumping his hips with everything he was worth. “UH! UHNNGHHR!! UHNNGGH!”

His tail stiffened. For a moment, every nerve in his body sang with pleasure—and probably a lethal dose of radiation. Then passion overwhelmed him, and the behemoth shot his thick, ropy seed onto the deck.

It was the act of a dimwitted, feral, lust-drunk animal. He loved it.

---

“Hey, you sure it’s around here?” Kaz called, his KR7 Unstabilizer slung over a shoulder. He thought it made him look rather roguish.

Lianna thought it made him look like a total prick. Her  feathered ears twitched, and she churred in irritation. “Listen, we picked up a life sign and a flash of radiation. And the bounty we’re gunning for is…”

“Olmar Brax, the Rad-Slug Terror of Arkus 6,” Boss finished for the two. As usual, he was already tired of their bickering. They were hunters, not politicians. Instead of mincing words, they should mince targets. Or something. He actually wasn’t sure what mince meant. “Now get back to work, you mincing cowards.”

“Fine, fine.” Kaz picked at his nose, like the insufferable human he was. “But don’t mind—”

A purple blur knocked him from his feet, and would have taken his head off were it not for a quick blast from Lianna’s kinetic rifle.

“Hælvetes hore!” Kaz wailed, scrambling to disable every safety protocol on his gun. In the wrong hands, a KR7 Unstabilizer could rip a tank to molecules in seconds. “Whatever the dritt this is, it’s dead!”

Before he could snap a shot off, Boss stepped before him. The bounty hunter grinned greedily, and unclasped a mag-collar from his belt. “‘Whatever the dritt that is,’ dear boy, is a Trogolan behemoth. So do me a favor, stun him, and let’s earn an easy sixty million.”

Of course, the behemoth couldn’t understand a word that they were saying. All he knew was that the little two-legs in front of him were getting very close to his shiny thing, and he didn’t like that. A second later, he discovered what a KR7’s low-power setting felt like, and he decided that he didn’t like that more.

He also discovered that he couldn’t move his legs, and that he was having a rather hard time keeping his tongue in his slack jaw. The stunned beast pawed feebly at the ground, huffing as a metal band was clasped around his neck.

“Next stop, the zoo. Great shot, kid,” Boss said. For good measure, to show he appreciated the boy, he clapped Kaz on the back, hard.

Lianna snickered quietly, knowing how much the ‘kid’ hated that. Still, he had done well. Sixty million was sixty million, after all. Already, cash registers were going off in her head, distracting her from her radiation alarm. Instead, she looked to their prize and said the only word that came to mind: “Score.”