#obsessed!orion | Explore Tumblr posts and blogs

muletia · 7 hours ago

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[tfp] obsessed!orion pax x human!reader

summary: what if optimus' obsession bypassed his memory loss? what if he was so infatuated that even his past self yearned for you?

cw: fluff, pinch of angst, canon divergence: orion is taken by the autobots, obsessive thoughts, clinginess, orion literally cannot be left alone for one(1) second, tbh nothing happens in this, i just wanted to write obsessed!orion interacting with you, bad writing, silliness

an: i wanted to implement more ideas, but it came out as it did. i will definitely write some more fics with orion, maybe some smut??? ;)) who knows

word count: 4700

"Come to the base. It's urgent."

As you stare at the terse message from Ratchet, your chewing slows and stops. A storm of questions whirls in your mind, panic creeping into your body. Before you can even type a single letter, your phone rings. The caller is none other than the Autobot medic himself. You answer in less than a second.

"Hello? Ratchet, please don't scare me—what exactly happened?"

"It's about Optimus." Your heart skips a beat. "During the last mission, he was... injured. Or, to be precise, damaged."

"Is it serious?" you ask, pacing nervously around the break room. Lunch now long forgotten. "Will he be all right?"

"Physically—he's never looked or felt better. Mentally, however... that's a different story. I'll explain the details when you get here. And make it quick."

"Hold on, wait—I can't just leave work early like that. There's a whole procedure for this. I can't just waltz out, even though I’d love to leave right now."

"...In an hour and a half, I expect to see you here at the base. See you then."

He hangs up. You stare at your phone screen for a moment, replaying the conversation in your head. Something serious must have happened—Ratchet wouldn’t disturb you at work otherwise. And it involved Optimus... You bite your lip, torn by indecision. You need to at least make sure he's okay, to see with your own eyes what Ratchet was talking about. Otherwise, you'll regret your negligence and spend the rest of the day worrying.

Shoving the half-eaten sandwich into your bag, you rush to your computer to draft a request for early leave, praying fervently that your boss will grant it.

You kept pressing the gas, speeding toward the base, trying to balance obeying traffic laws with worrying about the Autobot. You knew he had been preparing for a mission recently, he had told you about it during a ride you shared, but you didn’t expect it to end like this. Maybe you should have, considering you were associated with a race of aliens deeply embroiled in a centuries-long war, but you always pushed such unpleasant thoughts to the back of your mind, wishing your friends the best. Now, though, all the worst scenarios were coming to the surface. Had he fallen into a coma? Was his processor damaged? Had he died? You didn’t want to think about such an ending. Optimus was alive. You were sure of that.

Seeing the familiar red rock, a tight knot of anxiety gripped your throat. In a few moments, you were about to drive into what was practically your second home, not knowing what awaited you. You glanced at the clock. You were half an hour late—well beyond the time Ratchet had given you.

As if on cue, the medic called you again.

“Don’t enter the hangar. Leave the vehicle at the entrance.”

He hung up before you could say a word, and you sighed. The situation had grown even more worrying.

Before you could say a word, he hung up, leaving you to sigh in frustration.

Following his instructions, you parked at the main entrance and made the rest of the journey on foot. The lights seemed especially harsh, glaring into your eyes as the tunnel stretched endlessly ahead of you, as if warning you, giving you one last chance to turn back. But no force on Earth could stop you now. Determined, you marched forward, needing to know what had happened to your friend.

The hangar was full of Autobots, their sheer presence intimidating. You had thought you were over the feeling of smallness that came with being one of the humans among them, but now it hit you again, hard, dredging up memories of when humans in their midst were still a novelty. You froze for a moment, your courage momentarily disappearing in the shadows of giants.

It wasn’t until your eyes landed on the reason you had left work early that you began to breathe again. Optimus stood there, seemingly whole and healthy, facing the platform where the kids likely were. Relief washed over you. He was alive. Your heart was still racing, but the weight of dread lifted slightly, leaving you braced for the next wave of bad news.

"Hey, sorry I’m late. Work took longer than I expected," you called out.

Your voice immediately caught his attention. Optimus turned to you so abruptly that it shocked everyone present, abandoning the conversation he had been engaged in. Tilting your head back to meet his gaze, you were surprised when he knelt down on one knee, making himself more accessible. You still had to look up, but now his face wasn’t obscured by his… windshields.

The first hint that something was off was his smile—wide, cheerful, and curious. Optimus didn’t smile like that, not even when something genuinely delighted him. Worry started gnawing at you again. Something was wrong.

"Greetings. You must be our next human ally, correct?"

At first, you were at a loss for words. Of all the scenarios you had imagined, memory loss hadn’t even crossed your mind. But before the conversation could veer into awkward territory or panic could take hold, you managed to reply, mirroring his smile.

"That’s right."

"You seem… familiar. As though we have met before."

The hangar fell silent, the atmosphere thickening.

"Of course he would remember her," Ratchet hissed under his breath. You shot him a glare filled with venom

Focusing back on the mech before you, you forced a calm smile, masking the whirlwind of emotions inside you. You felt like you were on the verge of exploding—uncertain whether to jog his memories or pretend this was truly your first meeting. Why hadn’t anyone given you guidance on how to handle this?

"Erm, well…" you began, only for Ratchet to step in and spare you.

"Humans can look quite similar at first glance," the medic interjected. "Orion, this is [Name], the last human who should know of our existence."

A flicker of something lit up in his cyan optics—something indefinable, known only to him.

"Greetings, [Name]. It is a great pleasure to meet you."

He extended a servo toward you. Tentatively, you clasped one of his digits, ignoring the ache in your heart. This shouldn’t have been happening. You shouldn’t have to forge a new relationship with someone so dear to you. It felt uncanny—like he was wearing Optimus’s skin but was someone entirely different inside. It was unnerving, disorienting. Yet this stranger had knelt before you, reduced himself to your scale to show respect, just as Optimus always had. It was a glimpse of his alternate self, a sign of the inherent honor and kindness he still carried.

"Hello, Orion. The pleasure is all mine."

Letting go of his servo, you gave him an apologetic smile, signaling the end of the conversation. You needed answers, clarity about the situation, before you could decide how to proceed. As Orion straightened up, you stepped past him toward the platform. You could feel curious optics on you, particularly his, as you fist-bumped the kids. Unbeknownst to you, Orion clenched his servo in the same way you had during your handshake.

"So," you said to Ratchet, "what happened?"

The medic sighed, clearly weary of recounting the story yet again. But you had to know. You listened intently, the details unsettling and at times horrifying, but you felt a growing sense of calm. At least now you knew what you were dealing with—what topics to avoid, how to act. The relief faded, however, when you learned that the first attempt to restore Optimus’s memories had failed, and no date had been set for the next.

As Ratchet spoke, most of the team dispersed, leaving only you, the medic, and Orion in the hangar. Taking a moment to process everything, you glanced at Orion, catching his curious gaze.

This was your new reality. Optimus was gone, yet not entirely, standing just a few meters away, watching you intently. It was too much to dwell on. You needed something to distract yourself.

Standing from the couch, you headed down the stairs. You figured you’d be here for the rest of the evening, so you might as well find something productive to do.

"[Name]?" Orion’s voice stopped you in your tracks. He looked genuinely concerned. "Are you leaving already?"

His behavior puzzled you.

"I’m just going to grab my things. I’ll be right back."

"I see. May I accompany you?"

Oh, that was adorable—especially with the hopeful tone in his voice.

"I’m not sure you’ll fit in the tunnel in your current form," you teased with a laugh. "It won’t take long. I’ll be back in a minute."

This time, you quickened your pace.

For several hours, Orion's life had been filled with uncertainty. He didn’t know how he had ended up on this planet, who the Autobots around him were, or why they called him "Prime" when he felt he was unworthy of the title. And now, another enigma had appeared—you. Orion could not rationalize the overwhelming need to be near you. He had felt it the moment he laid his optics on you. The need to stay close, to converse, to observe. The need to know you better. Never before had such intense emotions stirred within him for anyone, let alone a stranger. But you weren’t a stranger. This may have been your first meeting, and he may have spoken to you for the first time, but you were not unfamiliar. Of that, he was absolutely certain.

Seconds stretched into minutes, and minutes into hours since you had disappeared into the tunnel. He regretted not following you, even if it meant transforming into his alt-form. At least he would have kept an optic on you, preventing the gnawing feelings of confusion and longing from devouring him from inside.

Ratchet watched his friend closely. He recognized that look, that body language. He knew what it signified, what storm was brewing in Orion’s processor. Optimus had been the same when it came to you. For a brief moment, his friend was back. Too bad it was under such circumstances.

"Do you really remember that woman?" he asked.

"I am not certain," Orion replied, still gazing toward the tunnel. "I feel like she is not a stranger, even though I know this was our first encounter. And as… Prime, if I indeed held that title, was she close to me?"

Primus.

"Perhaps closer than any human, but only Optimus knew to what extent. That might explain why you recognized her."

"Then she is special."

"Everything points to that."

Orion glanced at him, offering a faint smile. For reasons Ratchet couldn’t quite explain, the gesture was hard to look at. Fortunately, you emerged from the tunnel, giving him an excuse to start working again.

"See? I told you it’d only take a minute," you laughed, a black backpack slung over your shoulder.

Orion didn’t confess the truth—that by his reckoning, you had been gone an eternity. He watched intently as you climbed the stairs and took a seat on the couch.

"So, Orion," you began, "what did you do on Cybertron?"

Oh. You were curious about him? Truly? He had never thought of himself as particularly interesting.

It was fortunate that you were not looking at him because his body language betrayed his embarrassment.

"I was an archivist. Do humans on Earth have similar professions?"

"Of course. You know, I’ve always admired archivists. It’s meticulous work, requiring patience and nerves of steel—if you know what I mean. Anyway, it’s an important job, and anyone who takes it up is very cool in my book."

"Cool?"

"You know, fascinating, impressive, admirable."

"Does that mean that... in your optics, I am… cool?"

He asked without thinking and immediately regretted it when you gave him an amused look. Embarrassed, he tilted his helm downward. For such a towering and formidable being, he was also astonishingly skittish. It was peculiar to see a former Prime in such a light, but it made him more relatable, more emotionally accessible. Even so, you couldn’t deny that you missed Optimus.

"Of course, you’re cool to me."

That answer brightened him. A spectacle of stars dances in his optics.

You returned to typing on your laptop, but Orion had other plans for you.

"It seems I still have much to learn about this planet."

"I think you’ll catch on quickly. Besides, if it makes you feel any better, the other bots don’t know everything either. If you’re ever unsure, just ask. I’ll do my best to help."

"Thank you, [Name]. Your kindness is very important to me."

"Anytime. If you’d like, you could also explore our literature—it’ll give you a good insight into what humanity is all about. That sounds like a fitting activity for an archivist, doesn’t it?"

He would much rather have you as his sole source of knowledge about your species, as it meant spending more time with you. He wanted to know not just what you were but who you were—your interests, where you worked, how you spent your free time, your philosophy, beliefs, and hobbies. Everything you were willing to share. He wanted to know you inside and out, to solidify this sense of connection and make it real. And if you wished, he would bare his own secrets, reveal his spark, and show you every part of himself. Perhaps then you might look at him just for a second longer.

"Yes, I believe that would be an enjoyable activity. And what is it that you do?"

He asked question after question, each answer adding a new layer of understanding about you. He shared a little in return, preferring listening to you—your opinions, your perspective.

Time passed swiftly in your company. Relentless and unforgiving, it waited for no one. Orion realized this when you set aside your device and began stretching. It was a mesmerizing sight—your movements were so different from those of Cybertronians, fluid, and light. That was until the air was pierced by the loud crack coming from your back.

Energon froze in his fuel lines, and his spark leaped to his intake.

"[Name]? Are you alright? Are you harmed?"

"Hm?" you hummed, confused. He looked as though calamity had befallen him, as though you’d been beheaded. Then you remembered—it was Orion, not Optimus, and the human body was weird. "Oh, that. Don’t worry, I’m fine. It’s perfectly normal." To prove your point, you began cracking your knuckles, stopping quickly when you saw his horrified expression. "Okay, sorry about that. But really, I’m fine. I just need to stretch."

"Alright…" he replied, though he didn’t seem convinced. You couldn’t blame him.

You rose from the couch and stepped down from the platform, intending to take a short walk. Panic erupted in his spark. Oh no. No, no, no. He didn’t want to be left alone, not after such a jarring experience. He wouldn’t let you out of his optics now—not even for a moment.

"May I accompany you?"

"Of course!" you replied without hesitation, smiling—a gesture he immediately mirrored. "It won’t be very exciting, though."

"On the contrary, I find you to be a most intriguing individual."

"Oh, thank you," you said, clearing your throat, embarrassed. Compliments delivered in that baritone still flustered you.

Together, you ventured deeper into the base, bypassing various sections. In the training room, Arcee worked on her speed, while Bulkhead struck a makeshift punching bag fashioned from an old car. The children watched the spectacle, occasionally entertaining themselves. You both quickly slipped past the always-open entryway and continued on your way.

��[Name]?” Orion inquires. You turn into an empty hangar with a high platform, starting to ascend the stairs.

“Hm?”

“How do humans attempt to court their partners?”

You hadn't expected such a question. You stop mid-step, pondering your answer. When you look at him, his expression is dead serious, though his optics betray a determination. Why would he want to know this? You decide it’s probably mere curiosity.

“It depends on the person.” You continue climbing the stairs until you finally reach the top, now level with his faceplate. “Some buy gifts like flowers, others go on elaborate dates. But the common factor is spending time together, and getting to know one another. Feelings tend to develop naturally that way,” you explain. “Actually, that’s an interesting topic. How did it work on Cybertron?”

“Similarly. However, instead of exchanging ‘flowers,’ we presented rare metals or crystals to leave the best impression. To demonstrate strength and potential as a partner.”

“I know a few people who would totally fall for that approach. Heh, I’d be thrilled to get a geode myself.”

Orion suddenly lights up. Were you suggesting something or just sharing an opinion? Whatever it was, he felt compelled to try. To prove himself worthy. Perhaps he could even find the ‘flowers’ you mentioned.

“I see. Thank you for enlightening me.”

“You’re welcome?” you reply, unsure exactly how you’ve helped, but the sight of his broad smile and bright optics makes it all worthwhile. He was utterly adorable.

The two of you chat casually until you’re forced to check the time. You inhale sharply, and Orion tilts his head slightly, curious about your reaction.

“It was great talking to you, but I really need to go. I have work tomorrow, and I’d like to get some sleep.”

Panic flashes across his face. He had enjoyed your company so much. He didn’t feel alienated or alone when he was with you. The sense of connection played a significant role, but Orion had already let you into his spark. He had found a safe harbor in you and wasn’t ready to drift away just yet. He wasn’t ready to let go, even if the world around him were to crumble.

“May I accompany you?” he asks, desperation seeping into his tone.

“Excuse me?”

“May I accompany you?” he repeats, now begging.

“My home isn’t exactly designed to host a giant robot. Besides, it’s dangerous and... wait, do you even know the traffic regulations?”

His expression answers the question, but he still attempts to defend himself.

“I have acquainted myself with them partially.”

“Who has the right of way at an uncontrolled intersection?”

He opens his mouth but quickly closes it again, visibly crestfallen. He looks as though he might cry.

“Orion, we’ll see each other tomorrow,” you reassure him. “The first thing I’ll do after work is come here.”

He frantically searches for an argument to keep you with him—anything to prolong your company. Then he remembers his first encounter with human children.

“Every child was assigned a guardian who escorted them home and ensured their safety,” he states, refusing to give up. “Do you have a protector?”

“Unofficially, that was Optimus…”

“Then I would like to carry on his mission.”

“I’m not a child, Orion.”

“I understand that. I merely wish for your safety, [Name],” he explains earnestly. “And… I would prefer not to part from the company most dear to me.”

Your thoughts drift back to something he said earlier—how he recognized the bond you once shared, even though this was your first conversation. He hadn’t recognized Ratchet or anyone from his team—only you.

You tried to put yourself in his position. To suddenly find yourself in a foreign place, surrounded by strangers addressing you by a false name and feeding you information that might as well be fiction. And then, in a world where nothing is familiar, someone steps in—someone you vaguely recognize. You might not know their name, but you know there was once a connection. Wouldn’t you cling to that tiny thread, desperately pulling it closer if someone tried to take it away?

Orion had found solid ground, and you were unintentionally trying to undermine it. You exhale softly. You already knew you’d be saying goodbye to sleep tonight.

“Alright.” His smile makes it all worth it. It’s as though you’ve handed him a star from the sky. “Let’s see what Ratchet has to say about all this.”

"I see no objections."

Orion looks at you with excitement sparkling in his optics.

"Wow, that was quick."

"It's a good excuse for Orion to explore the area and get accustomed to his alt mode."

The medic refrains from adding that if the former leader remained at the base, he would likely have wasted away in longing for you, lamenting to every sentient being that he couldn't wait to see you again. Though the comment teeters on the edge of his glossa, he opts for discretion. Optimus, at least, had never vocalized his peculiar obsession with you quite so openly.

"Should anything unusual occur, contact me immediately. Someone will come for you in the morning," Ratchet advises his friend before turning to you. "Good night, [Name]."

You thank the medic for his diligence and ask him to take some rest, earning a piercing glare that almost feels lethal, then retrieve your backpack and head toward the tunnel. Orion stays close by, not leaving your side even after transforming. Ever the gentleman, he opens the door for you, visibly delighted at the prospect of your first shared drive together. In his mind, this was more than a mere drive—it was a deeply intimate act, almost akin to inviting a partner into one’s private space.

But his dreams are promptly shattered when you inform him that you have your own car.

The journey is uneventful but nerve-wracking; you constantly check your side mirror to ensure Orion is still following you. Thankfully, there are no issues, and he even remembers to use his turn signals when necessary. Everything proceeds smoothly until you pull into your driveway and are struck by a dreadful realization: Will a Peterbilt even fit in my garage?

You park your car to the side, leaving Orion enough space to drive safely. Exiting your vehicle, you open the garage door and wave at him to proceed. You nervously bite your thumb, watching the massive truck carefully edge into the space. There are barely three centimeters between the roof of the truck and the ceiling. When you close the garage door, the already limited space shrinks further.

"So, do you regret your decision now?" you ask, stepping around to the front of the truck.

Orion transforms with meticulous precision, carefully positioning his limbs and helm to avoid damaging the walls. The process goes well until his helm grazes the ceiling with an audible thud, dislodging a few small pieces of debris. He winces slightly and rubs his helm but offers you a warm smile.

"I do not regret my decision."

"Pfff, well, that's good. Are you all right?"

"I am unharmed."

You can’t help but feel guilty for confining him to such a cramped space, but it was his choice. If he insisted, he would simply have to endure it. Of course, that meant you would have to endure it, too, as the issues began almost immediately.

"All right, I’m going to grab my things. I’ll be back in a moment."

He panics again—something you’re beginning to expect from him.

"Please, do not leave me."

His voice is unchanging. A deep and thick baritone that permeates your body, speaking straight to your soul. It is strange to hear the same voice coming out of a shamed and uncertain being, begging you for company.

"I’ll only be gone for two minutes."

You reach for the door handle, but his servo shoots forward, blocking your exit.

"Orion," you chide, your tone sharp and reprimanding.

He doesn’t meet your eyes, his apprehension laid bare.

"Please, I do not wish to be alone."

"Two minutes," you say firmly, though your annoyance falters when you see the raw emotion in his optics. Sighing, you place a hand on the edge of his digit, catching his attention. "I’ll be back. I promise."

"Good mech."

He believes you, of course he does. He trusts you to return, yes, he even knows it. It doesn't change the fact that he is frightened, he feels alone, and your proximity calms the storm raging through his processor. His whole body is clamoring for you, screaming for you to stay with him. He craves bodily contact, he wants your soft hands to stroke his metal and your lips to whisper sweet nothings. He wants more, he wants to feel the softness, more, more, more.

He takes his servo away.

As you disappear through the door, Orion buries his face in his hands. Despite his embarrassment, he can’t suppress a grin. He had enjoyed that moment—far too much.

He wants to hear you say it again.

When you return, you’re carrying a blanket, a deck of UNO cards, some snacks, and your laptop. Orion beams at the sight of you but frowns when he notices you shivering.

"Are you cold?" he asks with concern.

"Hmm? A little, but I’ll warm up soon."

Without warning, he gently scoops you up in his servo, handling you with the utmost care. The shock is brief—you don’t even have time to protest before he places you on his chassis. His servo remains loosely wrapped around you as a precaution, but your back presses against his warm metal frame. Tilting your head up to glare at him for pulling such a stunt, you find him already watching you, amusement dancing in his optics.

"Ask next time before you do something like that," you scold lightly.

"I make no promises," he teases, earning a playful flick to his digit.

"I was planning to play UNO, but since you pulled that move, let’s watch a movie instead. Unless you’d rather do something else?"

"I leave myself entirely at your mercy."

He would have been content doing nothing as long as he could hold you close.

"All right, then. A movie it is."

He worries when you fall silent for too long.

It's hard for him to keep up with the plot when he's overstimulated, but he tries, because your questions encouraging discussion come out of nowhere. And it was just at moments when he started to drift off, when the optics shifted from the tiny screen to you; when there was only you and him in the world. Sometimes, however, he would focus for longer, especially during the romantic scenes. He longs to experience something similar with you, an indestructible, sappy love. To recite poetry into your ear and watch you blush, to announce to everyone how much you mean to him. To bestow expensive gifts, the geodes you mentioned earlier. He needs your tender words, your praise, your touch. You could do whatever you liked with him, and he would give you his spark.

"[Name]?" he calls softly, leaning closer to check on you. Relief washes over him when he sees you’ve simply fallen asleep. Poor thing—you must have been exhausted.

Still, a part of him resents it. He wanted to talk to you longer, watch more films, learn more about human romance to win your favor. But he knows his thoughts are selfish. Setting the laptop aside, he carefully covers you with his other servo, creating a cocoon of warmth and safety.

He's not sure he'll be able to recharge. At least not now, when he was too absorbed in devouring you with his optics. You felt safe with him. You gave him your trust. You chose him.

A spark of possessiveness sweeps through his processor. He doesn't want to let you go. He doesn't want you to go to work tomorrow and leave him for eternity. He also knows he shouldn't think that way. The spark goes out.

Because he doesn’t know how much longer he’ll be himself. How much longer he will remain as Orion Pax.

Watching you sleep, his processor churns with thoughts. You trusted him. He vows to prove his worth tomorrow, to show you just how deep his feelings run.

#transformers #transformers x reader #optimus prime x reader #optimus x reader #tfp #obsessed!optimus #orion pax x reader #obsessed!orion

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