(Also feel free to reblog with more top Optimus x bottom sentinel fics)
An Archive of Our Own, a project of the Organization for Transformative Works
Waking to a blank processor, his processor wiped clean, and the devoted gaze of Optimus Prime, Sentinel is told they are conjux endura, after an accident that left Sentinel with amnesia.
And more so shocking is the revelation that Sentinel is carrying their sparkling. The revelation leaves him blushing and bewildered, but Optimus's unwavering love feels like home.
Still, something about this idyllic recovery doesn't quite add up...
As faint echoes of the past begin to stir, he wonders if the perfect life he's been given is everything it seems
Additional Tags:
Tags Contain Spoilers,Other Additional Tags to Be Added,Top Optimus Prime,Bottom Sentinel Prime (Transformers),Sentinel has breasts, Mild-few mentions of past Orion/d-16,Memory Alteration,Mech Preg (Transformers),Amnesia,Memory Loss, Not Canon Compliant, Manipulation, Past Rape/Non-con
doodles. my transformers art has been ew lately ughhhh
i read a fic where sentinel gets like captured and used by the quintessons and then like married megop find him but theyre evil and basically tell him "yo be with us or get used by the people" and sentinel obvs is like "ok ill agree to be with them but plan my escape" and in that part of the fic, he opens a door to find megop literally killing a guy and he has his tits out
Ok so hear me out. Optimus is a big guy, especially post matrix (with him in ONE being arguably among the biggest Optimus version given he stands taller than ONE!Megatron), and we all know how the Og Prime's cogs boost your size significantly
With a regular cog Sentinel would be. So ridiculously short next to him. Grabbable size. He is at the perfect height for Optimus to wrap his servos around his mid-section and pick him up, and Sentinel would have such a strong mixed reaction to it... on one side he hates how easily he is dwarfed and manhandled by this fucker who is possibly like, 1/10th his age. On the other it makes his processors lag with how fast that turns him on.
The faces he makes are so comical it physically hurts Optimus not to laugh or aww at him before kissing him breathless
And given i'm apparently the cogless!sentinel fan... if little sentinel actually managed to take Optimus, after seeing that spike getting iver the "that is NOT fitting inside of me." Voice in his helm, he'd be an absolute mess, even if a cute one~
He'd look so cute tho, all messed up and crying in bliss because of how nice and good it feels... i need to draw this
(Sending in the inbox because your dms are closed lol)
(Sorry for the late reply, this week was just unfortunately busy. And DMs are open now if you’d rather chat there. 😅 I just somehow completely forgot I needed to click the button to open dms.)
I ended up having a very long response, so I added the keep reading.
Oh my primus, YES.
Post-matrix Optimus is an absolute unit.
I'm imagining Sentinel being teased and called pocket-sized. So if Optimus slides both servos around Sentinel’s waist, thumbs almost meeting in the back, and lift him clean off the ground without even trying. And Sentinel? He’d be furious about it. Absolutely livid. How dare this young, cocky archivist-turned-Prime manhandle him like he weighs nothing.
But the moment he’s up in the air, legs dangling, pressed against that massive chassis… his cooling fans would hitch. His face would cycle through about twelve different expressions in three seconds: outrage , embarrassment , reluctant arousal, trying to glare but failing because his optics are already starting to flicker. Optimus would feel that instant tension in Sentinel’s frame, the way he goes stiff at first and then slowly melts against him, and it would take every ounce of Prime willpower not to burst out laughing or just coo at how adorable he is when he’s flustered.
And don’t even get me started on cogless!Sentinel. Tiny, proud, sharp-tongued Sentinel finally letting himself be overwhelmed by someone so much bigger, stronger, younger, and actually caring? that stubborn defiance would crack so beautifully. He’d still try to save face, muttering things like “This is undignified” or “You’re enjoying this far too much,” even as his voice glitches and his legs start trembling.
But once Optimus actually starts moving? It’s over. Sentinel would turn into the most gorgeous mess: optics blown wide, cheeks flushed, coolant tears streaking down his face, mouth open on silent gasps or broken little moans he can’t hold back. Clinging to Optimus’s shoulders like they’re the only solid thing in the universe. And Optimus would be so gentle and reverent about it, murmuring praise against his audio receptors, telling him how perfect he is, how good he feels, how proud he is that Sentinel trusts him like this.
I definitely need to write this one day.
The size difference making it all so intense, so overwhelming, but also so safe in a way Sentinel never thought he’d get to feel again.
The world needs to see tiny, blissed-out, crying-in-overwhelmed-pleasure Sentinel absolutely ruined (in the best way) by gentle giant Optimus.
…Please draw it. (No pressure though if you don't feel like it)
Here's a short passage for the late reply (sadly only mild kissing):
Optimus doesn’t even have to try. One moment Sentinel is standing there, arms crossed, radiating that familiar haughty glare, and the next, two massive servos slide around his waist like it’s the most natural thing in the world. Thumbs nearly touching at the spine, fingers splayed wide across sleek gold-blue plating. Optimus lifts.
Sentinel’s pedes leave the ground without ceremony. He goes rigid instantly, wings flaring, optics snapping wide in pure indignation.
“Put. Me. Down,” he hisses through clenched denta, voice pitched sharp enough to cut steel.
Optimus only hums, low and amused, pulling him closer until Sentinel’s chest plates bump against the broad red-and-blue expanse of the Prime’s torso. The height difference is absurd like this—Sentinel’s face is barely level with Optimus’s chassis, close enough to see the faint glow of the Matrix through the seams. Close enough that every vent cycle from the larger mech washes warm over his helm.
Sentinel’s cooling fans stutter. He tries to summon another scathing remark, but all that comes out is a glitchy little static burst when Optimus’s grip tightens—just enough to remind him how easily those servos encircle him. How little effort it takes to hold him suspended, helpless, utterly powerless.
His face cycles through a spectacular range of emotions: fury, mortification, and then, traitorously, a flush of heat that has nothing to do with anger. His optics flicker, dimming for a fraction of a second as his processor lags on the realization that he fits perfectly in those hands. That he’s being held like something precious and breakable and wanted.
Optimus notices, of course. The corner of his mouth twitches, fond and helpless. “You’re making the face again,” he murmurs, voice warm with affection.
“I am not making a face,” Sentinel snaps, but it comes out breathless, weakened by the way his servos have involuntarily curled against Optimus’s chest plating for balance.
“The one where you’re trying to look angry but mostly look like you want to be kissed until you forget your own name.”
Sentinel’s wings twitch violently. His glare would be terrifying if his cheeks weren’t glowing faintly and his legs weren’t dangling uselessly in the air.
Optimus leans in, slow enough to give him every chance to protest, and presses their forehelms together. “May I?”
Sentinel’s answer is a strangled noise that’s half snarl, half whimper. He tries to say something cutting, but Optimus is already closing the distance, mouth plates brushing his in a kiss that starts gentle and turns deep and thorough far too quickly.
By the time Optimus pulls back, Sentinel’s optics are half-lidded and unfocused, coolant tears pricking at the corners from sheer overwhelmed sensation. His frame is limp in Optimus’s hold, fans whirring loud and unsteady.
“There it is,” Optimus whispers, voice rough with adoration as he thumbs away a tear track. “My favorite face.”
Sentinel makes a weak, embarrassed sound and buries his burning face against the Prime’s neck cabling.
He’ll deny it later, of course. Vehemently.
But for now, he stays right where he is—small, held, and utterly undone.
I'm the SentiOp anon from the valveplug confession blog and the anon who asked you if this blog was an alt
Just wondering... are you interested in chatting a little about the blue bastard? I have so much i wish to share about him but nobody in my community that's into transformers lol
If not it's fine, dw
(My compliments again for your fic, i am so ready to see him get wrecked-)
Hi!! 💙
Yeah, absolutely, you can always talk to me about the blue bastard inbox or chat.
Please, please infodump.
I know how terrible it is when nobody around you shares the fandom 😭 (me with top op x bottom predaking)
Send your thoughts anytime, and thank you again for the fic love, he’s definitely not getting out unscathed 😈
Just a small heads-up, I’m not always around, but I’ll always get back to you when I can!
Hey just wanted to let you know what i love your bottom sentinel fic and i re read it like 4 times already lmaooo i am so ready for the wild ride it will be!!
Also this might be a weird question but is this blog like, an alt of @/ghostiepines? Mostly because i am VERY interested to chat about sentiop with some people who aren't just marginally into it, and i need to know how many of us before i dm anyone lmao
Thank you for the kindness!!!
the fact you re-read it four times is probably the reason i’m currently possessed by the spirit of filthy revenge breeding sentinel.
Hopefully sentinel will be getting absolutely wrecked in ways hasbro will never recover from 😈
Part of me wants to plot built my fic while the other is like:
Make him broken on decepticon and autobot spike. i want him addicted. i want him ruined. spark him up until he’s just a pretty incubator with a crown.
I'm down bad for bottom sentinel.
And no, I'm not a sideblog of them, but good to know about some fellow sentiop fans
I NEED TFA Optimus to get a massive size upgrade from becoming Magnus snd the first thing he uses it on is obliterating Sentinel’s holes. I need that bot clinging to Optimus, optics glazed over, face tucked into his chest because he’s too embarrassed regarding letting Optimus see how flustered he’s got him.
TFA Sentinel needs to be subjected to the nastiest, hottest, wettest heat. I want that mech squirming on the berth, swapping between clenching on nothing and fingering himself until he’s exhausted. He never thought he needed any interfacing aids until now and he’s desperate and whiny and needy for something, anything to fill him outside his fingers.
Of course, knowing Sentinel, he likely put off talking about his heat, hoping he could work through as much of it as he could, thinking he would be fine. Until he wakes up sweltering, his mind too fuzzy to call in and request time off, only thinking about satisfying the heat between his legs, the heat in his forge.
Lucky for him though. Not calling in sends him a boon, the Autobots still antsy after recent decepticon issues despite Optimus and his team’s recent success. Perhaps they send Jazz, aware of his and Sentinel’s old acquaintanceship and care from before things fell apart under his short term as Magnus. Perhaps they send Optimus, rival for the title of Magnus but still sees something good in him.
Or maybe, just maybe, to the joy of Sentinel’s aching frame and burning lust—they send both.
surprised to see so few fics tagged with bottom sentinel
I wish there was a arranged marriage fic with sentinel married off, expected to quickly get sparked up with plenty of bitties
Perhaps when political tension rises, they arranges a union for Sentinel—not for romance, but to secure an heir and stabilize alliances. He’s expected to enter a spark-bond and eventually carry an offspring.
Sentinel hates everything about it and cue slowburn angst.
2. a compelling argument for why your fave would never top or bottom
Oh boy, prepare for a loooooonnng one.
So Sentinel Prime. You’d think based off his bossy attitude and his need to be in control that he’d be a top right? Like obviously a guy who’s doing as much as he does can walk the walk as much as he talks about court martialing and wants to be referred to by his proper title, and etc…But that’s not the case.
Sentinel is a bottom. B O T T O M.
To get into Sentinel Prime’s bedroom in itself is a feat. He’s a rather private person and due to his demeanor he doesn’t make connections easy. We see from his interactions with Optimus that causal touch is something reserved specifically for people he is close with/had a history of being close with. He touches no one the same way he touches Optimus. And it also through knowing him that you get access to his vulnerabilities. To use Optimus once again for example: Now you may ask, if sentinel is a bottom, why is he the way he is? Is he not trying to assert himself over Optimus (and by extension others around him)? And the answer to that is that Sentinel is a BRAT.
Sentinel isn’t just a bottom, he’s a very particularly bratty bottom. He adores pushing buttons and getting his top riled up at him. That’s the fun of it! Taunting and teasing, he’ll keep pushing until he gets wants he wants. Which is being railed into the berth. And once you break him of his attitude, make him vulnerable and soft and then show that delicate part of him love and affectionate, he’s suddenly sweet. Pushing out an apology with all the strength he can, hiding his face. He likes being able to mouth off now and get soothed later.
So, why can’t he top? Topping doesn’t scratch the same itch. Bottoming is his vulnerability, being more than a pinnacle of streotypical mechhood. And to use the case of my usually preferred ship with him, Optimus, to give a more emptional aspect: bottoming to him is giving vulnerability to someone who he knows will catch him when he falls and pick up the pieces when he breaks, who won’t just get satisfaction about breaking his pride and attitude but will also take satisfaction in comforting and caring for him in the aftermath.
To give his all to someone means letting them in and giving them something more personal to him than the gossip about an Elite Guard member’s spike. To let himself be vulnerable and not be what’s expected of a mech like him. He also just, likes not doing the work for once and getting to complain without those complaints being treated in a degrading way, here he can be wrong and bratty and mean and the need for attention is acknowledged. He can be punished and humiliated without it making him feel like he’s backed into a corner. A safe way of dealing with the stress of the job.
So yeah, he’s a bratty bottom with a taste for being humbled and then being treated good despite his attitude earlier. Be mean and nice to him pls, he needs it.
Chapters: 3/?
Fandom: Transformers One (2024)
Rating: Mature
Warnings: Rape/Non-Con
Relationships: Megatron/Optimus Prime/Sentinel Prime, Megatron/Sentinel Prime (Transformers), Optimus Prime/Sentinel Prime
Characters: Sentinel Prime (Transformers), Optimus Prime, Megatron (Transformers)
Additional Tags: Bottom Sentinel Prime (Transformers), Evil Optimus I guess, Rape/Non-con Elements, Breeding, Sentinel has breasts
Series: Part 2 of The Breeding of Sentinel
Summary:
Faced with the illusion choice of “obedient pet” or “public cum-dump,” Sentinel’s last shred of pride battles (either way, his valve will never be empty again.)
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