I have always admired your lustrous finish.

[🪚] Wired Up with the Doc Bot - Knock Out x Reader | AO3 link, Tumblr post

[🪚] Taste of your Lips (I'm on a Ride) - Knock Out x Tracks | AO3 link

[🪚] So please, won't you tear me open wide? | Arachnid x Arcee | AO3 link

[🪚] Decepti-Depravity | Knock Out x Starscream | AO3 link

[🎣] She's my Collar | Nautica x Skids | AO3 link

After a long day of working their afts all day in the med-bay, Breakdown and Knock Out finally settled down in their habsuite and got their well needed rest, but the medic had other ideas. As the bigger mech laid on his back beside him, Knock Out nudged him to catch his attention, waking up Breakdown in the process.

"Say, sweetspark, how about we try something new tonight?" Knock Out asked, smirking at his Conjunx, there was a twinge of sultriness in his velvety voice.

"Of course, darlin'. I'm always up for somethin' new!" The blue bruiser exclaimed, the thought of trying something new with the mech he truly loved never ceases to get him all giddy. He's always open to experiment with his Conjunx, medical or otherwise.

Knock Out crawled on top of the larger mech and straddled him, bringing his faceplate closer to his and enveloping him in a passionate kiss. Breakdown opened his intake, inviting his Conjunx's glossa in. The medic pushed his helm further, deepening the kiss as their glossas wriggled for dominance and lubricant pooled to their chins. Both of their servos ran along their frames and grinded against one another as their kiss becomes more lustful. Grunts and moans slipped out from their intakes as they enjoyed each other.

Knock Out eventually pulled away from the other's lips, leaving a trail of saliva behind as it separated.

"Can ya open up for me, KO?" Breakdown asked as he brushed a digit on the medic's interface panel, causing him to let out a soft whine.

"You first, big boy." The sultriness in the medic's voice aroused Breakdown, causing him to make quick work of his interface panel. His huge, thick spike quickly pressurized as Knock Out looked in awe at his length. No matter how many times he's seen it, the sheer size of his lover's spike always delighted him to no end.

Knock Out soon followed, his spike wasn't as thick as Breakdown's, but he was pretty well-endowed for a mech his size. He gently rubbed his length against the other's as pre-fluid beaded at their tips, one of his servos joined in shortly after and pumped both of their spikes, adding extra friction. They both let out pleasured moans and grunts as they rutted their spikes against the doctor's hand until both of their overloads combined with one another.

Despite his larger stature, Breakdown already looked drained after overloading in their first session. Knock Out went down and cleaned the both of them up by licking their excess fluids. Seeing his Conjunx lap up the result of their sweet lovemaking aroused him all over again, bringing the bruiser back from exhaustion.

"We still have a loooong way to go, sweetspark." The medic snarled, trailing his servos onto his aft plating, gently rubbing it as Breakdown whimpered and whined at his touch.

"Please, doctor. Let me have this!" Breakdown whined in desperation, expecting the smaller mech to use his valve. He ruts against the other's servo as Knock Out ran his digits along the larger mech's seams.

"Now, sweetspark, I want you to bend over and show me your juicy little port." Breakdown obediently followed his command, rolling over and presenting his aft in no time, revealing his tight pucker to Knock Out as his impressive spike hung between his struts. Knock Out bit his lip at the sight, trying his best to restrain himself from fragging him silly so quickly.

"Be gentle, darlin'. I haven't done anything like this before." As open as he was to trying something new, he always takes precautions beforehand.

Knock Out gave his Conjunx a reassuring look before running his glossa over the hole, tenderly caressing his aft-hole as Breakdown's frame shudders in arousal. He couldn't believe that after vorns of them together, he never considered feeling this kind of pleasure. his spike was throbbing and twitching, desperate for attention as it leaked copious amounts of pre-fluid.

"Primus, I never expected how good you'd taste." The medic was completely lost in bliss, the taste of his own lover on his glossa drove him mad as his own spike twitched and throbbed. Coarse moans and delightful whimpers escaped the larger mech's intake as Knock Out crammed his glossa deeper into the passage, he was growing closer to his overload.

Sensing how close he was getting, Knock Out swiftly pulled away from his pucker. The brute grunted in disappointment as the smaller mech denied him of his release.

"I'll give you something better instead, dear." The smaller mech grabbed a half-empty bottle of lubricant from one of the drawers, Coating his digits and Breakdown's port with a generous amount of the liquid.

He prepares the larger mech's tailpipe by inserting two of his digits inside, making sure that it'd comfortably fit his spike. The foreign sensation of being penetrated from something other than his valve caught him by surprise, but he got used to it fairly quickly. Breakdown let out small groans and moans as Knock Out went to town using his digits before shortly pulling out when he considered it to be loose enough for him.

"Go ahead, darlin'. What are you waitin' for?" Breakdown said eagerly. The smaller mech's spike slapped against the wet pucker before he slowly inserted the head of his length into the tight passage.

"By the Allspark! You're tight as slag, Breakdown." Knock Out moaned as his spike wriggled deeper into the brute's aft-hole.

"I told ya it's my first time doin' this." The larger mech reminded. After they both finally adjusted to the new sensation, the medic slowly started moving, making sure that the other is comfortable. His spike was reaching depths that he never considered exploring.

"Unngh– Knock Out! You feel so fraggin' good…" Breakdown grunted, his engines revved as the smaller mech thrusted harder, squeezing out moans from his Conjunx. His optics twitched as his glossa hung out from his intake.

The medic repeatedly slapped his aft as he went at a rapid pace, the head of his spike continuously hitting the most luscious spots of his hole. The room was nothing more but a menagerie of rough clanking noises and passionate sounds of their lovemaking, it smelt of nothing but sweet, hot motor oil and their excess fluids. Breakdown was completely at Knock Out's mercy, letting the other absolutely demolish his then unused aft-hole.

"Mmmh– Oh, Frag, Breakdown. I'm so close!" Knock Out reached a servo to the other's length and swiftly jerked him as he continued his rough pounding, timing it with his thrusts. Both of their circuits went haywire as they lost themselves in their own pleasure, shaking and trembling as they get closer to their climax.

Finally, after a rough session, they finally came to their releases as thick globs of transfluid spurted from their spikes, staining the sheets with their combined fluids. The then white sheets were now tinted with pink as a result of their passionate love. Knock Out hastily pulled out from his Conjunx's tailpipe before admiring his stuffed, gaping hole. He kissed and licked at the used tailpipe, slurping up his own fluids as he marveled at his own work. The smaller bot eventually pulled off from the pucker, leaving a string of saliva behind as it made a 'schlk!' sound. Knock Out laid Breakdown on his back as he shoved his glossa into the other's intake, giving the bruiser the taste of his efforts before slowly pulling away.

"You cleanin' this up, Doc?" Breakdown teased, already knowing the answer. Knock Out let out a playful sigh as he quickly got to work changing the sheets to brand-new, fresh ones before grabbing some cubes of Energon. Breakdown yawned as he pulled Knock Out close to him, holding him in a warm embrace after they both refreshed their systems. The smaller mech melted into the cuddle, nuzzling his helm onto the other's chestplate.

"I love you more than ever, dear. Perhaps we should do this again some time soon?" Knock Out offered, giving his Conjunx an endearing gaze.

Notes:

The Arcee/Airachnid tags are lacking content T-T… the world needs more toxic yuri I think >_<

Note: Okie so this is my second work… sorry if it's still a bit bad TwT

This took me WAY TOO LONG to finish -_- but now it’s finally published!! This is probably my greatest work yet. :D

Tried something different this time AKA crossover shipping. I think this ship needs more attention due to how similar they are! ^w^

You are a Decepticon allied human. Your main job is performing maintenance on bots that might need physical help, whether external or internal. You’ve grown quite fond of studying Cybertronian anatomy over time.

This particular day you encounter Knock Out, who came to your workshop clutching his pained chassis. It was obvious that his internal workings may have been damaged.

He’d gone on a mission a few hours ago, recalling being beaten up quite violently by a few Autobots. Most notably Ratchet, who had been under the effects of Synthetic Energon at the time. You decided to check up on Knock Out by running your hands up and down his frame. He let out pained groans as you tried to check for any other injuries.

"I can't believe you get to see me like this..." Knock Out whined, his audials turned down.

"It's alright, doc. I'll fix you up in no time," you reassured him as you gently caressed his frame. He felt a bit skeptical being in your care, but a part of him enjoyed it a little.

“Watch the paint! I don’t trust anybody but myself with my lustrous finish,” he barked. You quickly got to work as you gently went over his paint job.

You found that the injury went deeper beyond a few scratches and bumps on his frame.

"Do you mind if I check for internal damage, doc?" You asked him with a glint of worry in your eyes. The speedster glanced at you with narrowed optics, sighing.

"Sure. But be careful, alright? My insides need to look as pretty and organized as my exterior," he snarked.

You slowly opened up the silver plating covering his lower frame, revealing a set of wires. You were too focused on how he managed to keep his internals neat and tidy. Sure, you knew he cared a lot about his appearance, but you never expected that he cared this much about it.

“Could you hurry!?” Knock Out snapped, “I’ve got better things to do after this, y’know?” You looked at him with a glint of fear and worry in your eyes, hoping not to damage his lustrous finish, and by extension his internals.

“Be careful with those! I already don't trust you with my exterior, Primus knows what you’d do to my internals!” Knock Out hissed, looking at you with annoyance and slight anger in his optics. You looked up at the red mech, giving him a reassuring look in return.

“Don’t worry, doc. I know what I’m doing,” you replied. You then went back to checking his wires further, hoping that there was no other serious damage. By the time you were almost finished with fixing him up, you noticed a peculiar set of wires. They were rose gold and seemed to be directly connected to his interface paneling. Your curiosity got the best of you and you decided to give them a gentle tug, Knock Out groaning in both pain and pleasure in response.

“What do you think you’re doing!?” He scolded, “Breakdown did a better job fixing me, don’t you know how sensitive and delicate those wires are?”

Using your new discovery to your advantage, you tug on those wires a bit rougher, Knock Out letting out a pained moan as he throws his head back, his frame heating up and his engine revving.

“Didn’t know you were this sensitive, doc,” you teased as you yanked on his wires harder. The doctor opened his mouth to say something, but let out a pleasured groan instead.

“Oh yeah… Frag, that’s it… Keep tugging them like the good fleshie you are.” Knock Out moaned. You straddled him, caressing his more sensitive wires before violently tugging them. You ran your hands over the headlights on his chestplate as his crossed optics rolled back in arousal. He reached out his servos to pull you in further.

“Frag… Oh, dear Primus!” Knock Out whined, heavy whimpers and grunts escaping his mouth. He never expected to enjoy such rough handling from a human. The more you yanked, the more hot and bothered he felt.

“If you keep up with this any further, I’m gonna!-” Knock Out cut himself off with a loud, pleasured moan. His sensors overloading as his engine revved harder. The overstimulating sensation of his wires being yanked caused his heated frame to give out, ex-venting heavily as his optics twitched.

“I told you I don’t trust you with my frame. If I’d known what you’d do to my internals, I would’ve just fixed myself up instead!” The medic scolded, trying to gather himself back together. He looked down at the lower half of his chassis, noticing how his wires were all tangled up and messy, he let out an annoyed groan at the sight.

“Guess I'll have to start fixing you up more often, doc,” you snarked.

Your newfound discovery has been proven to be quite useful, and you wouldn’t mind trying it out again.