Archive of Our Own

D-16 had always been a constant in Orion's life since the very beginning.

"Frag!"

The miner barracks were completely empty, not a spark in sight, except for the cursing bot that tried to ease the dent in his cheek after being punished for speaking out to a supervisor. Orion's words were muttered under his breath, barely audible in his opinion, but that didn't stop the officer from marching straight up to him and using Orion as an example to keep the other miners in line. He was sent to be fixed by Ratchet, but Orion would rather deal with the pain himself than be at the servos of that shady medic.

Orion vented tiredly, helm dropping as he stared down at the floor below his pedes. He soon noticed the air shifting in the room, followed by steps from a long stride.

He frowned, groaning as a familiar color came into view.

"What do you want D-16?"

"I just came to check on you, that hit looked like it hurt."

Orion rolled his optics, still not looking up. The rude treatment did not deter D-16 who took a seat next to the purple mech and started digging into the first aid kit for some numbing oil.

"What are you doing?" Orion finally looked up, snarling at D-16 who looked at him with this pleasant smile on his face.

"Let me help Orion, you're just going to make it worse."

"I don't need your freaking help! Can't I have a single day without you getting in my business!"

Orion quickly stood, taking a few steps forward and wincing in pain when his cheek throbbed from some faulty wiring that got messed up during that punch. His walking cycle stutters, immediately putting a servo to his cheek to dull the pain. D-16 quickly moves to stand in front of him, pressing a cooling salve into Orion's cheek to treat the pain.

"You're always like this, preferring to be alone and going where I can't follow. Let me help you Orion. Please, just rely on me," D-16 pleaded. There was a hint of urgency, almost like desperation in his voice.

Cool blue optics stared into blazing red.

For a moment time felt like it stood still. Like nothing was wrong and this quiet moment between the two mechs was the start of something intimate.

That is until Orion grabbed D-16's arm by the wrist, twisting it in place and causing the taller bot to scream in pain. Orion quickly shoved D-16 away from him, growling like a beast as he began to wipe away whatever D-16 rubbed into the seams of his faceplate.

"Get the frag away from me, your presence only disgusts me."

D-16 cradled his twisted servo against his chassis. The wiring bulges out of the joints, fizzing with static from the bent circuits. His brows are furrowed, looking up at Orion with sad, pitiful optics. There's something he's trying to convey, but Orion is no longer interested in whatever a lousy, pathetic bot has to say.

He clicked his glossa, stomping away until his frame disappeared from the barracks.

There's another moment of silence before D-16 is venting painfully. Rising from the ground he cracks his wrist back into place, doing his best to make sure the cable fibers stay inside of his plating before violently shaking his servo to force the sensation back into his digits. He flexes his servo, folding it into a tight fist and nodding in approval.

"It's no good to listen in on other's conversation."

"Haha, we just wanted to come check on Orion but looks like you beat us to it."

Two frames, similar in size to Orion step out from the shadows. A wide smile across Jazz's faceplate and an indifferent stare from Prowl. The two of them step into D-16's personal space, circling him like a predator to their prey.

D-16 is not intimidated.

"I'm starting to think that you're a masochist D-16. The number of times Orion has pushed you away far outweighs the number of times Darkwing has beat him. Doesn't it get tiring?"

Jazz's tone is light, but with an obvious intent to get under his protoform. Prowl smirks next to him, chuckling in response.

"You're like some lovesick techno-pup."

Their laughs, their bullying and teasing is loud and clear. They find D-16 pathetic, absolutely wretched for trying to slither his way into Orion's space. What they see is an intent to gain camaraderie with a bot who would want nothing more than to rip the spark from D-16's cold, lifeless frame.

Orion, Jazz and Prowl are often seen interacting with each other most out of all the miners in the barracks. While typically bots like to keep to themselves, these three had formed some kind of friendship that was very obvious to anyone who had two pair of optics.

They were so close.

So disgusting.

The corner of D-16's intake twitched. His optics cycled, burning darkly despite being known for their pure blue color.

"Stay away from Orion." Is all D-16 says before he too is quickly turning away, long legs taking him as far away as possible. Behind him, Jazz and Prowl can be heard cackling. They laugh to themselves, thinking they made the poor puppy run off crying.

What they don't know is that a violent wolf was hiding in the shadows waiting to jump out at them once he saw the opportunity.

Since their time in the mines up until the day of revolution, D-16, now Megatron, had never had a good relationship with any of the cogless bots. Their way of thinking just never seemed to click, and that was the truth all the way to when Sentinel fell and Orion, now Optimus Prime rose to take his place.

Autobots and Decepticons were now at war, fighting for their version of what was called justice and autonomy. Ever since that day when D-16 lost Orion to the depths of Primus did he briefly regret trying to get close to the bot. Love was a complicated thing and Megatron had assumed that his wishes would remain as they are, feeble cries lost in the void of nothingness.

That is, until something changed.

"I will be in my room, please don't interrupt me for the rest of the night."

Megatron passed a datapad to Shockwave who panicked, audials violently pulsing with anxiety.

"B-But Megatron we still have much to do about t-the Autobot's current crusade! They have breached our defenses further than anything we've ever seen. Kaon might be at risk!"

"They're getting desperate, especially now that their leader is gone. Wonder what happened to Optimus, he hasn't been seen for the last few cycles…" Soundwave added. He hummed to himself, taping his chin with a digit.

"The seekers have been doing excellent keeping the Autobots at bay. Optimus is likely hiding in the shadows, planning another one of his usual evil plans. For now I must rest, I understand the urgency Shockwave, but I have already provided all the important details to Starscream. Goodbye."

Megatron did not stick around for his commander's response. He turns down the hall, moving with his usual long strides to reach his room in only a few short steps. This section of their base was dimly lit with a lack of troops or guards keeping watch over the Decepticon leader. While there was always imminent threat of assassination, especially from Goldbug who had no trouble sneaking into the tightest crevices— Megatron assured his troops he was not in danger.

What the Autobots were doing was throwing a tantrum, akin to a sparkling that had lost their favorite toy.

The door to his berthroom cracks just enough to let him slip inside. He locks the door behind, implementing several safety measures so that not even a sneaky rat could slip inside.

"My sweetspark, I'm back."

He speaks gently, voice low and radiating a calming aura as he moves slowly to the side of his berth. The room is dark, barely lit by the dual moons from outside the window. Megatron prefers the darkness, not needing to be surrounded by blinding lights to see the beauty of his sweetspark laying on the berth.

Bound and tied, held against his will— Optimus Prime.

"Sorry it took me so long, your Autobots seem to be causing my troops some trouble. How are you feeling, sweetspark?"

Megatron sits at the edge of the berth. He leans into Optimus' space, ignoring the fury emanating from his EM field and focusing on those blazing optics that just drive him mad with lust.

"You're so beautiful— ah, what did I do to obtain such a beauty…" Megatron muses.

He shifts his frame, getting on his knees to slide up the berth and loom over the beautiful mech who glares up at him.

A gag keeps Optimus' intake shut, shoved so deep to stop him from even sputtering static. Optimus' servos are tied together by stasis cuffs which force his frame to go into lock down. With no way to escape or even cry for help, Optimus is forced to be at the wicked whims of Megatron, his one enemy who he loathes with every fiber of his being.

Optimus wrinkles his nose in disgust. The matrix inside of his chassis blooms with a purple light, spilling from the cracks of his broken windshield.

"My poor sweetspark, trapped in here all day, waiting for me. It pains me to keep you locked away, but this is for your own good."

A small drop of coolant clings to Megatron's lashes. He cradles Optimus' cheeks with a servo, rubbing it with the same tenderness like when he tried to put that salve on him all those years ago. That same desperate and torturous urge to claim Optimus had attached itself to his spark for the many years that passed.

Even with the passing of time, the changing of frames and loss of their innocence, Megatron's feelings never once changed for his dear Optimus.

He dragged his servo down to Optimus' lips, ripping the gag from his drooling intake.

"You disgusting, perverted freak! Let me go this instant you slag! I swear I am going to fucking kill you!" Optimus roars with such violent rage he nearly chokes on his own spit in his attempt to convey every form of violence upon the Decepticon leader.

Such venomous words barely deter Megatron. He chuckles as if the insulting mech was simply a sparkling speaking their first words. "Oh Optimus, you just don't understand."

"Understand what? That you kidnapped me and kept me hidden in your berth chambers for the last few cycles because you have some disgusting obsession with me? I hate you! I've hated you since the moment I laid optics on you and instead of leaving me the fuck alone you have done nothing but make my life a living hell!"

It was probably the infinite power of the matrix itself that forced a surge of energy through Optimus' paralyzed limbs. The poor mech flailed his arms in the air, trying to reach for Megatron's optics so he could rip them straight out of his helm.

Those blue optics that always looked at him, unblinking, lifeless but so expressive. It just made Optimus want to downright chew on them until they were turned into scraps.

"You fucker!" Optimus can only muster enough energy to roll across the berth. The light of the matrix slowly dwindles, left with only an emptiness in his chassis. "You repulse me, goddamit!"

"Yore unstable Optimus. I knew that there was always the chance of the matrix aiding you in your escape so I had to add a little something to your energon. I truly hope you forgive me."

Megatron rises from the berth. His steps are soft, not thunderous or fearsome, but simply quiet. That was what scared Optimus the most.

The uncertainty.

Fury flares through his systems. Energon pumps through Optimus' fuel lines so quickly that for a moment the thought of a spark attack reaches his thoughts.

Fear.

He hated that such a word even existed in his vocabulary.

Optimus clicks his glossa unable to do anything but watch as Megatron easily picks him off the floor and gently places Optimus back on the berth so that his spinal strut was parallel with the mattress. His servos remained locked in the cuffs as pure dead-weight on top of his abdomen. He expected to be returned to the same position as earlier, but soon realized that something different was happening when Megatron bent Optimus' legs back until his knees were pressed to his chassis.

Megatron started with feather-light touches, dragging his servos down the purple frame and caressing Optimus waist.

Optimus' felt all the energon in his frame instantly drain.

"What are you doing?"

"You'll just keep trying to escape me no matter what I do, so I believe it is best I show you what my intentions are, instead of telling you."

And then Optimus feels it, a scratch over his array panel.

"You—!"

"Shh, it's okay, just let me do everything, I promise to make it pleasurable for you," Megatron reassures.

It was so easy to open Optimus' panel— actually pathetic that he didn't have any extra firewalls installed to keep his system from succumbing to this bastard's whims.

Optimus' breath hitched, legs twitching as cool air hit his valve lips. The purple folds came to life, swelling from the way Megatron was staring with such rapt attention. Biolights trailed up the side of the outer lips, coming to rest just over Optimus' peeking anterior node. The red nub pulsed to life, firing off rapid sparks of electrical charge.

Optimus groaned, cursing his traitorous frame.

"Frag!"

He can't fight back, unable to even muster an ounce of energy as whatever drug Megatron had put inside of him was slowly turning his limbs to mush. The room felt like it was spinning, optics blurring until all he saw was an amalgamation of colors.

A digit slowly wiped away the coolant around the rim of his optics, and suddenly he was crying out in a mix of surprise and pleasure.

Megatron's glossa lapped around the swollen folds, eagerly sucking on Optimus' anterior node and teasing the silicone with his glossa.

"Fu— oh Primus you bastard… s-stop!"

Megatron hummed, peering up to see Optimus' face curled in a mix of emotions, fighting the pleasure of his untrustworthy frame. He continued his ministrations, dwelling deeper between the folds and outlining the entrance to his valve. His glossa pierced him without restraint, beginning his assault on the sensitive callipers that were at the whims of the Decepticon's glossa.

"No no no— ah ngh~!" Optimus moaned, immediately gritting his dentae as euphoria shot through his fuel lines.

The fearsome Autobot leader couldn't run, couldn't hide or lash out. He could only lay there with a tight heat surging in his abdomen, threatening to explode.

Megatron on the other hand was enjoying himself. After so long Optimus was now in his grasp, accepting— forced— his love and adoration after hundreds of cycles of being pushed away.

The many hours and days spent watching him, taking note of what servo he liked to use, and seeing how he liked to chew two times on the left and 3 times on the right. Back in the mines D-16 watched how Orion would fidget with his coghole when he was extra bored and start counting the tiles on the floor and sometimes begin to disassemble the screws on equipment and forget which caused several malfunctions during mining. His favorite was especially when he would watch Orion recharge at night and notice that he made these cute little whistles from his nose every few hours and his left servo twitched only when he was dreaming and anytime he would try to hide his anger the little finnials on his helm—

D-16 knew everything.

He could go on and on about every little habit and minute detail of Orion's, now Optimus', way of living. What Optimus knew, Megatron already knew as well, and what Optimus didn't know, well, Megatron already knew.

Megatron needed Optimus, so it was obvious that Optimus needed him as well.

"I'm reaching my limit," Megatron gasped, pulling away from the leaking valve. "I don't know how much longer I can hold myself back. I can only hope that you'll understand me, my sweetspark."

Optimus controlled his vocalizer before uttering, "go fuck yourself," through gritted dentae.

Megatron was disappointed, but equally hopeful. It will not be easy to make Optimus understand where his undying love and loyalty come from, but he can hope that with this first step it will bring them closer together.

"I love you Optimus…" Megatron whispered. He leaned his frame into Optimus', encompassing him until a fraction of his weight rested on top of the other. Megatron hid his faceplate in the crook of Optimus' neck, inhaling the smoky scent of oil and carbon before an audible click was heard.

Optimus knew what it was, but couldn't be bothered to fuel Megatron's desires with words that would just go in one audial and out the next. He remained firm in his resolve, forcing his systems from letting out static as the first plunge of Megatron's spike breached his valve entrance.

Oh.

Oh that was definitely way too big.

Optimus didn't have to see the spike to know that his insides were going to be rearranged.

Megatron had tried peppering soft kisses down his neck, nipping on Optimus neck cables as a distraction. He pushed the first half of his spike into the tight valve, grunting in pleasure as the slick walls clung to each biolight with a death grip.

"Ngh, Optimus…" Megatron groaned. A hand came up to cradle the back of Optimus' helm while another kept his legs parted to the side, allowing for him to keep pressing deeper.

Lubricant and pre-transfluid oozed from the taut entrance. Optimus found his willpower slowly crumbling with each push of that spike into his valve. He tried to blame his faulty systems, maybe the concoction that Megatron had slipped into his drink messed up his protocols— either way, Optimus could physically feel himself falling apart.

"F-fuck… too big ah!"

A static of pleasure shocked his processor. The room spun even worse, stars forming in his vision. That place which no bot has ever touched before, Optimus' ceiling node was in the process of being thoroughly abused by what was only three-quarters of Megatron's spike.

"D-don't!" He pleaded. Optimus choked on his own spit, trying to fight back his instincts before he did something that would give Megatron the wrong idea. "Oh Primus there's still more?!"

"Shh, it's okay sweetspark, I'm almost there. We will soon be one…"

A heat so intense filled the room. Optimus and Megatron both felt like their circuits were being fried, cooling vents working overtime to cool their molten frames. It got to a point that a warning signal came across both of their HUDs, alerting of imminent shutdown.

Megatron could care less, unbothered, uncaring of such nonsense. He finally had Optimus— his dear Optimus in his grasp and was not going to let some faulty protocols ruin everything.

"No, you are mine, I will not let you go, never!" Megatron roared. Yelling out to who? Even he did not know. The only thing that mattered was that he had forced his spike the rest of the way in, moaning so sweetly as Optimus' walls hugged him like a second protoform.

"Ahh… Y-you psycho— ngh stop moving!"

Optimus' moans were sweet, so addictive that Megatron felt himself lost to his own lust and greed.

He wasted no time, quickly retracting his spike before slamming all the way back in with a brutal thrust that immediately had Optimus gushing. Lubricant and transfluid squirted from his pretty valve, arching from between his swollen lips and spraying the Decepticon leader in the dirty juices.

Megatron laughed, so happy, so intoxicated. He lapped up the transfluid, drinking it like a starved mech while never once stopping his thrusting. He aimed to breach as deep as possible, to imprint his very shape inside of Optimus' valve.

"Stop I'm already over— ah ngh loading! Fuck ah!"

"Not enough ngh, it's not enough!"

"No!"

Optimus knew what Megatron wanted, to release himself into the very depths of Optimus' valve and reach his gestation chamber. Something so frightful clenched at his spark that he nearly screamed.

Panic.

Optimus had lost all control of even the most basic functions. Pleasure and lust was all that remained. His frame had reorganized itself, slowly stretching along with the width of Megatron's fat spike and allowing him to breach deeper and deeper until a bulge could be seen right at the top of Optimus' abdomen.

He cursed, hating how good it felt, hating how he had to stop himself from begging for more.

His second overload hit him like a train, a second spray of hot transfluid shooting from his dirty valve and covering the bed below them in the slick juices. Optimus moaned, followed by a growl as his valve tried to keep up with the excess input from each one of Megatron's thrusts.

"Mine, mine, mine— you're mine! Cycles I have waited to hold you in my arms, to melt our frames into one. I've dreamed of piercing you and laying inside of your cracked chassis."

Megatron's thrusting stuttered, pre-transfluid oozing from the engorged head of his spike and coating the walls in the pink spent. The squelching of liquids and moans were heard loud and clear that even a bot standing down the hall would know what was happening.

Even if they did they would do nothing, just walk away, knowing that their dear Decepticon leader was busy with more important tasks.

"I've done it, I have claimed you, you are mine. My sweet Orion, my Optimus Prime. You are mine."

Megatron roared, loud and guttural. His engines revved, drowning out the cries of Optimus who could no longer hold back his indecent cries as the full length of Megatron's spike pierced him all the way to the entrance of his gestation chamber.

What followed was pure bliss.

In that single moment both bots felt like they were floating. Their systems pulsed with charge, overloading their frames with a pleasure that numbed everything what stood right in front of them.

Optimus' optics blinked, releasing coolant but unable to focus for long before a shadow loomed over him. Megatron had leaned over, having pried off his battle mask in a desperate attempt to captured his lips in a heated kiss.

The world spun, everything dissipated, only the fervent lapping of glossas and intakes melding together could be heard. Optimus did not have the energy to fight back anymore.

The thick spike inside of Optimus continued to spurt a heavy load of transfluid, shooting as deep as possible until Optimus was left feeling full and surprisingly satisfied.

Megatron pulled away from the kiss for just a second, a string of saliva connecting them together.

He stared into those dimming red optics. A laugh bubbled from his chassis knowing that victory had finally been achieved. Even while the Autobots were out there causing mayhem and dismantling bots in an attempt to force Megatron to release their leader— they all knew that it was essentially a fruitless endeavor.

Megatron had finally won.

"I love you," Megatron whispered.

And "I hate you…" uttered Optimus before falling into recharge.

Forced to forever be a constant in each other's lives.