Chapter Text
Theo Raeken was all but drumming his fingers on the table with impatience as he waited for the Dread Doctors to leave for the night. They were still creeping about Beacon Hills, checking on their “experiments.” Theo supposed he should be grateful that the Doctors were doing much of the footwork for creating a pack but Theo was, by nature, impatient. He felt much better taking matters into his own hands.
“Do not deviate from the plan,” the Surgeon commanded as though he could read Theo’s mind.
Theo merely snorted. “The ‘plan’ better hurry the hell up,” he muttered by way of reply.
If the Surgeon and Pathologist heard him, they gave no indication. They left the room without so much as a backward glance.
The Geneticist paused for a moment at the door. “Do not enter the back room,” he commanded in a gravely voice.
Theo looked up from where he had been examining his claws, which he was casually extending and retracting. “Whatever do you mean?” he simpered.
The Geneticist took a step toward him, almost threateningly. “The back room,” he repeated. “What that chamber contains is not for you. You will not find answers to your questions there,” he intoned.
After a pause, Theo answered in a low voice. “If you would let me help you, perhaps we could all reach our goals sooner.”
The monstrosity known as the Geneticist was unfazed. “I assure you, it is for your own...safety...that we command this. Do not disobey.” Then the Geneticist turned and followed his companions out into the night.
Theo lifted his chin ever so slightly challenge. I don’t need your protection - the thought almost made it past his lips, but thankfully he caught himself.
There was no doubt in Theo’s mind that the Dread Doctors were helping him in his quest to defeat Scott McCall and his pack simply as a means to their own nefarious ends. The Doctors owed Theo nothing - this was simply a temporary, convenient alignment of goals. And so Theo knew that it wasn’t for his “protection” that he was being kept from the lab’s back room.
No, whatever was there was being kept from him for some other reason. And Theo didn’t appreciate the Doctors making decisions for him.
Theo leapt up from the card table that he had been seated at with a snarl, and his claws left angry gouges behind in their wake. Telling Theo not to do something was usually a good way of getting him to do exactly that. “I don’t need to be fucking babysat,” he snarled to himself.
Right now Theo wanted any advantage over Scott that he could get. And he did not appreciate someone else taking cards off of the table for him, so to speak. Even if those others were the Dread Doctors.
The Dread Doctors would be out all night, Theo knew. He would have plenty of time to take a look at that “back room,” and determine for himself if there was anything useful inside.
---
The “back room” was an antechamber off of the main lab, sealed off behind a door that Theo had never really seen open. Via overheard conversations, Theo knew that the door was only locked with a simple, run-of-the-mill keyed bolt. The room’s contents had their own securities.
It was a simple matter to pick the lock. Tempted though he was to simply snap the doorknob off with brute strength, Theo knew that sometimes subtlety was the better option.
The door swung outwards, towards Theo and into the main lab. The door was designed to keep things in, not out, Theo noticed - no hinges on the inside for someone...or something to pull the pins from.
Even though he knew he was completely alone, Theo still glanced back over his shoulder. The Dread Doctors were gone - but Theo still felt like he was being watched.
It was dark inside. Theo felt along the wall to his right and thankfully found a switch. He clicked it on, half expecting the place to be illuminated by a dingy, single bulb.
Theo, who didn’t exactly consider himself to be faint of heart, nearly recoiled at what he saw.
For all of the horrors that the room contained, at least it wasn’t dark. The space was well lit, no doubt so that the Doctors could work effectively. But the light cast into sharp relief a cornucopia of the strange and terrible. Glass jars contained organs and other body parts. One wall was hung with dried herbs and dried...other things that Theo didn’t care to try to identify. A row of what appeared to be potted carnivorous plants was on a bench beneath grow lights - their nature revealed by the blood dripping from clenched pods that where the size of Theo’s head. Even now, one of the pods twitched as whatever was inside continued to struggle.
Other unspeakable things vied for Theo’s attention. But the worst thing was the sense that something was observing him. With no one else around to see, Theo allowed himself to shudder.
Along the back wall was the notebooks that Theo knew to be his best chance of divining anything useful for his purposes, and the chimera began to quickly make his way over to them. Theo had a feeling that he should probably get out of here as quickly as he could.
Movement on a shelf caught his eye, something beside what honestly looked like the skull of a small dinosaur. Inside a large glass jar, similar to a kitchen storage jar, was some kind of black...substance. Theo could have sworn he saw the contents of the jar shift on their own, and he couldn’t help but lean in closer. What was it, he wondered. Of course the Dread Doctors wouldn’t label the damn thing.
Just as Theo was about to conclude that he had imagined things, the black slime inside the jar shivered. An inky bubble formed on the surface and expanded for a few seconds before finally popping.
And then the entire contents of the jar moved, sliding up the side of the container towards him as though an invisible hand was tilting the jar.
Theo was struck by the distinct feeling that whatever was inside of the jar wanted to get out, to get to him.
He took a step back, and the contents of the jar slid back to level.
“Not touching that,” he said to himself. He then cast his gaze back towards what he knew would be the Dread Doctors’ notebooks. The answers that he sought in this room would be summarized there. “Hurry up, Raeken,” he muttered as he took a step back from the shelf of horrors.
As Theo began rifling through the Doctors’ notes, what at first looked like another bubble began to form on the surface of the black slime. But this “bubble” didn’t pop. It formed a pupil, which focused intently on the back of the young chimera...and then it blinked.
---
The creature in the jar wasn’t nearly as contained as the Dread Doctors thought it was. While the Doctors thought they were studying and experimenting on it, in reality the creature was simply biding its time, waiting for a suitable host. It was hundreds of years old - it had no issue with being patient. The Doctors were utterly foolish, having no comprehension at all of what they were dealing with.
Now, the creature liked what it saw, and it knew that its patience was about to be rewarded. The male that had wandered into the room was perfect. Positively ripe... He was young, and strong - the way his muscles shifted and moved beneath his clothes made that obvious. It was a shame that the boy’s shapely rear was concealed beneath those tight pants - all of his clothing would have to go eventually. Hunting would be so much easier if all of the prey was naked. Still, it would be fun to take this one.
The boy’s mind was a beautiful thing, too. So much pride and ambition - yes, these things could be worked with. Shaped and molded to serve the creature’s purposes.
And even better, he seemed...more than human. The first tender explorations of the boy’s mind proved that, even if he wasn’t a supernatural thing, he was certainly not just human. That would make him even more delicious.
With a soft plop the eyeball was sucked back into the black goo, and the entire mass began to creep up the sides of the jar again. The lid’s seal would be difficult to dissolve, but it was an entirely surmountable obstacle. Besides, it was time. Prey was close at hand.
---
Theo was so intent on studying the Dread Doctor’s notes that he didn’t hear the soft sizzling noise. Not at first, anyway. It was the faint smell of burnt rubber that finally got his attention.
Well, that and the sudden feeling that he was being stalked. That sensation in the back of his mind that the balance of power in the room had shifted, and not in his favor.
His claws extended as Theo turned around, expecting a fight. But what he saw froze him in place.
It looked like someone had uncapped an oil well inside that small jar. Black slime didn’t so much ooze out of it, it practically gushed. The seal had been completely eaten away, leaving the lid lose. Eventually the metal latch lost it’s grip on the lid, which flew open and allowed even more of the sludge to overflow the container, slide down the shelf, and flow into the growing slick on the floor.
It didn’t stop! Theo tilted his head in confusion. In the midst of danger, Theo’s mind was hung up on the fact that there seemed to be way more fluid coming out of that jar than it’s volume would suggest it contained. Like some kind of disgusting magic trick the black slime just kept flowing, long after the jar should have been emptied.
“Crap, crap” Theo muttered, shaking his head in an attempt to clear his thoughts. His mind seemed fuzzy, like he had to work to get his flight-or-fight response in gear. Fangs and claws probably wouldn’t cut it here - literally and figuratively. So it was really time to go, then.
When Theo made to edge around the black pool on the floor, the liquid flowed across the ground to cut him off.
“What the fuck...?” Theo growled. He moved the opposite way and got the same results. The slime kept cutting him off from the door.
Now Theo was getting really worried. Whatever this mess was, it was sentient. And it didn’t seem to want him to escape.
A bulge began to form in the center of the slick, like something was rising up from inside it. Theo took a step back and his blue eyes darted desperately around the room, frantically searching for an escape path.
Theo wasn’t expecting it when the blob on the floor shivered and then launched a part of itself at him, like some kind of gross black loogie.
“Shit!” Theo yelped as the slime ball struck him in the chest. He immediately felt heat and moisture through his shirt, along with the sound and smell of something burning.
“Fuck!” Theo yelled as be backpedaled into the desk behind him. The chimera quickly stripped his shirt off, fearing that whatever was eating at his clothes would start burning his skin. He threw the sodden garment away and frantically patted at his chest, afraid that he would find the slime eating into his flesh.
The shirt landed with a sodden smack and was soon dissolved, but other than a thin film of gross slime and a slight tingling sensation, Theo was relieved to find that he himself was unhurt. Whatever the thing was, it didn’t seem to be harmful to flesh.
At this point Theo didn’t care what this thing was, he just wanted to get the hell away from it. It was time to make a decision. He quickly gauged the distance across the pool on the floor, and before Theo could talk himself out of it he ran forward and took a flying leap across the slime beast. If only he could make it to the door...
His jump would have earned him top commendations for track and field day at school, but the slime creature would not be denied. A tentacle of goo shot up from the pool and latched onto Theo’s trailing foot, and he could already hear and smell it eating away at his sneaker. It gave a yank, pitching Theo forward and causing him to land painfully hard on his hands and knees.
“No...no!” Theo snarled as he surged forward, desperate to escape as he felt the slime drag him backwards. Another tentacle erupted from the main pool and caught his other ankle, and together they almost caused Theo to fall onto his belly. The goo had now dissolved through one of this shoes, and he cringed as he felt the slime settle around his bare ankle.
Now thin tendrils of slime were creeping around and up Theo’s calves, eating through his jeans and leaving his skin tingling in their wake. “Hey!” Theo screams as he struggled. “Help!” But there was no one around to hear his cries.
Theo rested on all fours for a moment as he contemplated his situation, his stomach heaving in and out with his frantic breaths. Now that he was mostly trapped, the slime’s advances around his legs slowed. But they didn’t stop. Theo’s sneakers were completely gone by now - the feeling of the goo sliding between his toes and over his feet was revolting.
The jeans around his lower legs were pretty much ruined by this point, but whatever the slime was, it didn’t seem to be hurting him other than the tingling, sticky sensation that he felt. How something could be both slippery and sticky was a question to be pondered at another time.
His mind felt muddled, like he was drunk. Theo blinked rapidly when he realized that he had just spaced out for a moment. “Gotta...get out of here,” he panted.
Something definitely wasn’t right, beyond the obvious messy situation that Theo now found himself in. He couldn’t think clearly! Every time he tried to form a coherent idea, tried to focus in on any kind of meaningful effort to get away, something foreign seemed to suppress the thought inside his brain.
The ooze was creeping up his thighs now, and with another burst of strength Theo tried to get away again. The slime gurgled almost angrily, and two offshoots from the main mass leapt forward and captured Theo’s wrists as well, keeping his hands pressed to the floor.
Now he was well and truly pinned in place. Along with a feeling of helplessness, Theo also felt the first pangs of arousal course through him, as though it was the fear that was slowly turning him on. Theo had always been one to get off on domination - but this was perhaps the first time that he was the one who was going to be dominated.
As if to confirm the oily creature’s nefarious intentions, several thin tentacles rose up between Theo’s legs, seemingly zeroing in on his groin. Some slithered around the waistband of his jeans to begin the process of dissolving the clothing, and Theo gasped and sucked his stomach in when he felt the slime touch the skin of his lower belly. He outright moaned when he felt an oily appendage press against his slowly hardening bulge.
“Nooooo...,” he groaned as he felt his jeans and underwear give way. Thin tentacles, somehow solid when they wanted to be, coiled around and through holes in his ruined jeans and stripped them from his lower body. Theo’s shredded underwear got caught on his dick as it was dragged away, causing his hardening member to bounce and smack up against his abs, leaving a smear of precum in his thin treasure trail.
Distantly, in the far back of his mind, Theo noted that he usually never started leaking this soon. Not even counting the fact that he shouldn’t be as turned on by his predicament as he was. The black slime had to be doing something to his mind. Sexual energy was one of the most powerful things in the supernatural world, but never would Theo have imagined that it would be used against him like this.
The black ooze slowed, but it never stopped its advance. It was now slithering up Theo’s forearms, too. Thin tendrils stroked the inside of his elbows before almost reverently caressing the curve of his straining biceps, even as Theo’s wrists were completely covered by the slime.
Ropes of the black slime were tightening around his trembling thighs as well. Theo’s head hung low between his shoulders, and he could only watch helplessly as the oily tentacles advanced up his legs, drawing closer and closer to his groin. His cock was heavy and fully hard now, and as Theo stared another drop of pearly precum formed at the flushed tip.
Theo groaned in simultaneous relief and anguish when the tendrils advancing up his lower body finally began to wrap around his balls. “Fuck...,” he breathed as the creature also began to bind and cover his cock. The tingling sensation combined with tightening pressure around his member caused Theo to buck his hips, seeking friction that he couldn’t find. When the black reached the tip of his cock it absorbed the precum there, and the creature shivered as if in delight. The slime then began to squeeze Theo’s thick cock, trying to milk him for more.
The thought that he shouldn’t be enjoying his peril nearly as much as he was did cross his mind, but it was swiftly pushed away.
Rivulets of black slime had passed his upper arms and began to loop around his shoulders. The black started to spread out like veins across Theo’s broad chest, and his breath hitched when the tendrils found his nipples. It felt like two talented mouths were sucking and biting at his chest, teasing his nipples into hard peaks. A few of his previous lovers had paid attention to his nipples, but nothing felt as divine as the treatment he was receiving now. It was as if the slime creature was worshipping Theo, almost subliminally feeding into his narcism.
Oily tentacles branched away from the main mass around Theo’s legs and slid upwards to cup the curve of his plump ass. Theo whimpered when he felt the tendrils stick to his skin and knead his taut muscles, working to slowly and relentlessly spread his ass cheeks apart. He could only moan helplessly as he felt the slime creature’s tentacles creep nearer and nearer to his asshole, and Theo was both filled with dread and anticipation at the impending penetration.
Somehow not knowing exactly what the creature intended to do to him only served to heighten Theo’s arousal.
Theo whimpered when he felt the creature’s first tentative licks against his entrance. His back bowed almost reflexively, like he couldn’t make up his mind whether or not to thrust back against the touches against his hole or forward into the tight grip around his aching cock.
Tentacles of slime had encircled Theo’s waist and neck by now, though the boy was mostly oblivious to it by this point. Tendrils were sliding over Theo’s stomach and up his back, slowly spreading like a black web across his muscular body, forming a snare that he would never be able to escape from.
“Ungh, fuck...,” Theo breathed when a tentacle breached his entrance. It was thin and moved almost teasingly slow, but it was also relentless in its steady invasion. Theo’s muscles rippled reflexively, but the invading appendage was unfazed. Panic flared briefly in his mind, but the foreign presence snuffed it out.
Let me in, a voice inside of Theo’s head intoned as the tendril penetrating his ass continued to burrow deeper. Theo groaned as he felt the tentacle begin to expand inside of him. It will be better for you if you do not resist.
“What...what are you? Who are you?” Theo asked. “Ungh...yes!” he gasped as the slime around his cock and balls constricted. The grip around his shaft moved in a ripple from the base to the tip of his hard dick, edging him closer and closer to orgasm.
I have no name. I have no need for one, the creature replied. As for what I am, yo will experience that soon enough. The ooze around Theo’s neck began to tighten, even as more tendril branched upwards to cup his jaw and slither around the shells of his ears.
Theo’s blue eyes flared wide in panic as his breath was slowly cut off. “Ack...help!” he wheezed. He struggled to break free, but the creature kept him pinned on all fours. “I can’t...,” he begged. I can’t breathe, he finished silently in his mind.
You must give me what I want, the black creature replied.
“What...what do you...want?” Theo choked out. “Ah...!” he exclaimed when tentacle in his ass pressed against his prostate. The tentacles of slime around his waist and hips tightened, as if to further drive home the point that he was being fucked and owned. Theo both hated and loved it.
Cum for me, the voice intoned inside of Theo’s head, and the command was punctuated with yet another stroke of the boy’s achingly hard cock. When we fully bond, you will understand.
Theo could only gasp inarticulately in response. The mass around his neck loosened just enough for him to suck in a few tiny breaths. But the relief didn’t last long - the tendrils constricted Theo’s throat again, only allowing him to take in just enough air to not pass out. The asphyxiation and helplessness only served to heighten his arousal.
As Theo was pondering what the creature had said, the slime around his neck began to move up his throat and over his jaw. Theo clamped his mouth shut just as the ooze covered his lips, making it so that he could only breathe through his nose.
It was all too much... The tentacle stuffed in his ass felt like it was getting thicker and thicker, and it was pounding out a merciless rhythm against his prostate. The constant, massaging grip around his cock was bringing him closer and closer to blowing his load. In the back of his mind Theo had the faintest idea that cumming would be bad for him...but yet the urge to let go was all but irresistible.
Yessss, the voice in Theo’s mind intoned. Submit. Complete the bond with me. Be mine...
Theo whimpered and shook his head, but in response the slime creature simply renewed its sexual assault on the chimera’s body. Theo could only clench his hands and arch his back as he took everything that the creature dished out.
I will grant you power, the black creature hissed in Theo’s mind. I can give you pleasure beyond your wildest imagination. A contraction rippled through the slime that was wrapped around Theo’s cock, stroking him in a facsimile of the world’s most talented hand. The feeling almost pushed him over the edge. You will never be wanting for anything.
Why... Theo struggled to form the question in his mind. Why are you doing this to me?
The answer wasn’t in the form of a voice, it was more like...an understanding. Like the answer was right there in Theo’s brain, and he didn’t even know it was there until he asked the question. It was a parasite, Theo realized. An ancient creature that fed off of its host - fed off of sexual energy, among other things. Theo was to be nothing more than its meat puppet, and that thought terrified him.
With a surge of emotion that was repulsively condescending, the creature assured Theo that the experience would be, at the very least, pleasurable. To further prove its point the creature suckled and squeezed at Theo’s nipples, causing him to wail through his gag.
Now you will be mine.
It was the only warning Theo got before the tentacle in his ass slammed against his prostate, and the tentacles around his dick tightened in a spiral from base to tip. The tendrils swiftly stroked the weeping crown of Theo’s member, and then several thin appendages dipped into his slit and pushed their way down into his cock, as though they were tired of waiting for him to cum and would just as soon take it for themselves. The action ripped the orgasm from his body.
Theo came so hard that it hurt. Every muscle in his body seized up from the force of his orgasm, and if his hands and knees hadn’t been stuck to the floor Theo would have surely fallen over. His balls emptied themselves of his load, and Theo’s blue eyes rolled back in his head as the ooze around his cock practically suctioned his seed from his body.
With every pulse of his cock the grip around his throat tightened. Theo only realized it when he went to try and suck in a breath through his nose. His eyes flew back open when he realized that there was no breath to be had for him, and soon enough darkness descended over his consciousness as he finally passed out.
---
Theo regained consciousness slowly. As awareness slowly returned to him, he realized that he was not exactly alone in his own mind anymore. Good, you are awake.
The memory of being smothered and...raped by the slime creature returned full force, and Theo gasped. He went from lying on his side on the concrete floor to bolt upright in an instant, his gaze darting about the room as he searched for his enemy. There was no sign of the creature anywhere.
I am right here, boy, the voice boomed in Theo’s mind. All around you. Inside you. We are one, now.
Theo noticed then that he was wearing clothes again. Only...they weren’t the clothes that he had put on that morning. His sneakers, jeans, the shirt he was wearing - it was all black as midnight. “What have you done to me?” Theo demanded as he shakily climbed to his feet.
I made you better, the creature responded. You are now my surrogate in this world. You will be the host that does my bidding. You will help me spread my kind.
Theo’s mind was swirling, and he almost lost his balance. “I don’t understand. What...does that mean?” Theo shook his head as he struggled to comprehend what the creature was saying. “I don’t...I don’t serve anyone! Get out of my head!”
The creature simply laughed. Foolish child, you will never be rid of me. Only Death can separate us now. Until then, I am with you forever. Your life is not your own anymore. You belong to me. Your body, your thoughts...I own the all of you now.
Theo was well on his way to panicking, now. There...there must be a way to fix this! The Doctors, they’ll know what to do! A fierce determination boiled up inside of him, and Theo growled. “I’ll kill you,” he snarled. “I’ll destroy you, send you back to wherever the hell you came from!”
A bolt of searing, white hot pleasure surged through Theo’s body, causing his knees to buckle - Theo grabbed onto the nearest shelf, knocking over several specimen jars, to keep from falling down. It was as if every pleasurable nerve in his body had been turned on at once, and Theo couldn’t help the passionate scream that escaped his lips.
The creature was highly amused by Theo’s responsiveness. While I am your master, as you can see I am not...cruel. You will enjoy our time together, I assure you.
It was like an orgasm that went on for minutes instead of seconds, and that one taste was enough to hook Theo. That, and the fact that the creature was steadily eroding Theo’s resistance from within. “I’ve got to have more of that,” Theo eventually moaned as his fear and objections crumbled.
We want the same thing, you and I, the creature simpered. What a responsive host this Theo Raeken was.
More than anything else, Theo wanted power. That was, after all, why he had returned to Beacon Hills. The creature wanted power as well. Power, and the chance to spread its own kind. Like a virus, Theo thought. Rather than be insulted, the creature took this assessment as a compliment.
Their synced thoughts landed on the same thing at once - the desire for greatness, to simply conquer. Perhaps it was only natural that Theo’s thoughts went right to the biggest obstacle that stood between him and his personal rise to power.
A True Apha is here??? The inquiry was a primal roar inside of Theo’s mind. We must have him! The parasite’s desire was so strong that Theo actually took several steps towards the door, compelled as he was to follow his new master’s will.
Theo laughed. “You know, I think you and I will get along just fine after all,” he whispered.
The Black agreed.