Chapter Text
Ratchet and Optimus Prime had always been more than longtime friends.
That was the quiet truth that lived between them, tucked away beneath layers of war, duty, command, and exhaustion. They were lovers—had been for eons—though neither of them ever made any grand display of it. There were no open declarations in the corridors of the Ark, no tender gestures performed beneath the curious optics of their soldiers, no indulgence of softness where war demanded steel.
To anyone who did not know how to look closely, Optimus and Ratchet were simply what they had always appeared to be: Prime and medic, commander and chief medical officer, old allies bound together by history and necessity.
Ratchet scolded Optimus whenever the Prime did something reckless, which was often enough to make the medbay echo with the medic’s furious voice. Optimus endured it with that patient, impossible calm of his, occasionally offering some mild explanation that only made Ratchet’s optics narrow further. They argued over injuries, patrol routes, missed repairs, overcharged energon lines, and Optimus’s infuriating habit of treating his own frame as if it were some disposable weapon of war rather than something living.
They shared quarters, too—but then, so did many mechs aboard the Ark. Space was scarce. Privacy was a luxury none of them possessed, not even their Prime. No one had a true private chamber, only divided spaces, borrowed corners, and quiet moments stolen between alarms and briefings. So when Optimus and Ratchet took the same berthroom, neither of them believed it was suspicious.
In fact, they thought they had done an excellent job hiding everything.
They truly believed the Autobots saw nothing.
They were wrong.
The Autobots knew.
Of course they knew.
They had known for vorns.
At first, it had been small things. A change in Ratchet’s tone when he addressed Optimus alone, sharper to any other audial, but warmer underneath if one listened carefully. The way Optimus’s optics softened when Ratchet entered a room, just for the briefest fraction of a klik before his Prime’s mask settled back into place. The way Ratchet always seemed to know when Optimus had gone too long without refueling. The way Optimus, despite all his speeches about discipline and collective sacrifice, never once questioned Ratchet’s right to drag him bodily into the medbay when necessary.
Then there were the glances.
Optics meeting across the command deck when no one was meant to notice. A silent conversation shared in the space between one tactical report and the next. Concern hidden behind formality. Affection buried beneath habit. Devotion disguised as irritation.
Elita-One had been one of the first to realize.
She had watched them for a long moment one cycle, watched Ratchet snap at Optimus for ignoring a cracked transformation cog, watched Optimus bow his helm with something almost like tenderness, and she had simply known. After that, others noticed too. The femmes caught on quickly. Then Prowl, because Prowl noticed everything. Ultra Magnus followed soon after, though he pretended he had reached the conclusion only through strict observation and logical assessment.
From there, the knowledge spread quietly through the Ark like warmth through an energon line.
No one said anything.
That became the fun of it.
It was one of the few harmless amusements the Autobots had left, a small private joke tucked inside the endless brutality of war. They acted as though they did not know. They turned their optics away when Optimus lingered near Ratchet’s station longer than necessary. They pretended not to hear when Ratchet’s insults softened after the medbay doors slid closed. They found sudden reasons to leave rooms when the tension between Prime and medic grew too heavy, too tender, too intimate to belong to anyone else.
Besides, it was no one’s business.
Optimus was still their Prime. Ratchet was still their medic. Their bond, whatever name they gave it in private, belonged to them alone. In a war that had stolen cities, homes, creators, sparklings, and whole futures, the Autobots were not about to steal one fragile piece of happiness from two mechs who had given nearly everything else.
So they kept the secret.
Or rather, they kept the illusion that Optimus and Ratchet still had a secret.
For eons, that was enough.
But the universe had never been kind to carefully guarded things.
It had a way of reaching into the quietest corners of a life and pulling the truth into the light. It had a way of choosing the moment when everything seemed balanced, when two weary sparks dared to believe they could preserve something precious, and then shifting the entire course of fate beneath their pedes.
The universe had another idea for Optimus Prime and Ratchet.
One that would not only change them forever, but finally reveal what every Autobot aboard the Ark already knew.
That the Prime and his medic had belonged to each other for a very, very long time.
Ratchet was sitting on the edge of the berth in the quarters he shared with Optimus, a datapad held tightly in his hands.
The room was dim, lit only by the faint blue glow of the screen and the muted pulse of the Ark’s internal systems beyond the walls. Around him, the air felt too still. Too heavy. The distant hum of engines, usually a comfort, seemed unbearably loud in the silence.
He had read the data three times.
Then four.
Then five.
The result did not change.
Ratchet, who had faced battlefield horrors without trembling, who had rebuilt soldiers from almost nothing, who had shouted down Primes, generals, and fools with equal ferocity, found himself staring at a single medical confirmation as though it had struck him through the spark chamber.
Sparkled.
The word glowed on the datapad with clinical certainty.
Ratchet’s vents hitched.
For a long moment, he did not move. His fingers tightened around the edge of the device until the metal creaked softly under the pressure. His processor, normally sharp and ordered, had become a storm of calculations, fears, impossible hopes, and questions he did not yet know how to ask.
A sparkling.
His sparkling.
Their sparkling.
Optimus’s sparkling.
Ratchet closed his optics, and emotion rose in him so abruptly that it nearly stole the air from his vents. He thought of the war. Of the Ark. Of Megatron. Of medical shortages and crowded corridors and alarms that could scream at any hour. He thought of Optimus standing before armies, carrying the weight of a dying world on his shoulders, and of the private tenderness the Prime allowed himself only in the shelter of this room.
Then Ratchet looked down again at the datapad.
The confirmation remained.
The universe had changed, quietly and completely, while no one had been looking.
All he could do now was wait for Optimus to enter their quarters.
Wait for the Prime to cross the threshold, weary from command, noble and impossible and painfully beloved.
Wait for the moment Ratchet would have to look him in the optics and tell him something that was not merely important, not merely unexpected, but life-altering.
Something that would tear the veil from the secret they had spent eons pretending to hide.
Something that would make Optimus Prime not only a leader, not only a symbol, not only the last hope of the Autobots—
but a sire.
The door to their quarters opened with a low hiss.
Optimus Prime stepped inside slowly, the weight of command still clinging to his frame like dust from the battlefield. The blue of his optics was dimmed by exhaustion, his shoulders carrying the invisible burden of reports, strategy, casualties, and the endless calculations of a war that never seemed to loosen its grip on any of them.
For a brief moment, he expected the usual.
Ratchet would either be standing near the workbench, muttering angrily over some damaged piece of equipment, or already prepared to scold him for skipping a diagnostic, ignoring a joint strain, or overexerting his systems again.
Instead, Optimus found Ratchet sitting on the edge of their shared berth.
Still.
Too still.
The medic had a datapad in his hands, but he was not looking at it anymore. His optics were fixed somewhere beyond the floor, unfocused and distant, as if his processor had retreated into some place Optimus could not follow. The faint glow from the datapad painted pale light across Ratchet’s faceplates, highlighting the tension in his jaw, the rigidity of his shoulders, the way his fingers were curled too tightly around the device.
Optimus’s spark gave a sharp, quiet pulse.
“Ratchet?”
The medic did not answer at once.
That alone was enough to make Optimus move closer.
“Ratchet,” he repeated, softer this time, the Prime’s voice losing its command and becoming something much more intimate. “Is something wrong?”
Ratchet’s optics flickered up to meet his.
For a moment, all the sharpness was gone from them. No irritation. No fire. No cutting remark waiting on his glossa. Only something raw, frightened, and deeply uncertain.
That frightened Optimus more than any battlefield ever could.
Ratchet, who could face death with a wrench in one hand and insults on his tongue, looked afraid.
“Sit down,” Ratchet said.
Optimus stilled.
The words were simple. Quiet. But there was a tremor beneath them that made the Prime obey without question. He crossed the room and sat beside Ratchet on the berth, careful not to crowd him, though every instinct in his frame urged him to reach out.
The silence between them stretched.
The hum of the Ark filled it, distant and steady, unaware that the universe inside that small room was about to change forever.
Ratchet looked down at the datapad again. His thumb brushed over the edge of the screen once, then twice, as if he were searching for the courage to say what the data had already made undeniable.
“Optimus,” he began, and his voice was rougher than usual, stripped of all the confidence he used like armor. “I ran the scans multiple times. Full-spectrum. Spark resonance. Carrier system analysis. Hormonal shifts. Energon redistribution. Protoform compatibility markers.”
Optimus’s optics narrowed slightly, not in suspicion, but concern.
“Ratchet…”
“I thought it was a glitch at first,” Ratchet continued quickly, too quickly now, as if stopping would make the words impossible. “A malfunction in the equipment. The scanners have been overworked, Primus knows half of them need parts I don’t have, and the readings were—were unexpected. So I ran them again. Then again. Then I recalibrated the system and ran them a fourth time.”
Optimus reached for him at last, one large hand settling gently over Ratchet’s.
The medic’s fingers trembled beneath his.
Ratchet inhaled through his vents.
Then he said it.
“I’m sparkled.”
For a moment, Optimus Prime did not move.
The words seemed to enter him slowly, sinking past armor, past duty, past the title of Prime, all the way down to the quietest and most hidden place in his spark.
Sparkled.
Ratchet was sparkled.
Ratchet was carrying.
Their sparkling.
Their sparkling.
The realization broke across Optimus like sunrise over a ruined world.
His optics widened. The exhaustion vanished from his face as if it had never existed. Something bright and unguarded rose in him, so powerful that it shattered every careful mask he wore before the Autobots, every solemn restraint of command, every heavy silence that war had forced into him.
“Ratchet,” he whispered.
Ratchet barely had time to brace himself before Optimus surged forward.
The Prime gathered him into his arms with a sound that was almost a laugh, almost a sob, and then Ratchet’s pedes left the floor entirely.
“Optimus—!”
Optimus lifted him as though he weighed nothing at all, holding him securely against his chest before spinning once, twice, unable to contain the joy blazing through him. For one impossible moment, Optimus Prime was not the leader of the Autobots. He was not the symbol of resistance, not the bearer of the Matrix, not the mech on whose shoulders their entire faction leaned.
He was only Optimus.
Happy.
Radiant.
Alive with wonder.
“I’m going to be a sire,” he breathed, his voice full of awe. “Primus… Ratchet, I’m going to be a sire.”
Ratchet’s hands clutched at his shoulders.
“Put me down, you overgrown war machine!”
But there was no real anger in the words. Only panic. Only a fear so sharp it almost split his voice in two.
Optimus stopped at once.
The joy did not leave him, but concern returned, softening his expression as he lowered Ratchet carefully back onto the berth. He knelt before him then, massive frame folding down so he could look up into Ratchet’s optics instead of towering over him.
Only then did he truly see it.
Ratchet was not smiling.
His field was not warm with happiness.
It was tight, trembling, tangled with dread.
Optimus’s spark clenched.
“Ratchet,” he said gently. “Talk to me.”
That opened the floodgates.
“Talk?” Ratchet repeated, almost incredulous. “You want me to talk? Fine. Let’s talk. Let’s talk about the fact that I am far too old for this.”
Optimus’s brow plates lifted faintly.
Ratchet raised a sharp finger before he could speak.
“And yes, I know exactly what you are going to say. Technically, by Cybertronian standards, I am not ancient. I am only a few vorns older than Ultra Magnus, nothing dramatic, nothing worth carving into a memorial wall—but that is not the point!”
His voice rose, edged with panic now.
“The point is that this is not some peaceful age of Cybertron where carriers are monitored in proper medical centers with full supplies, stable energon stores, trained specialists, and functioning equipment. We are in the middle of a war, Optimus. A war against Megatron. Against the Decepticons. Against an army that would tear the Ark apart if they knew there was a sparkling aboard.”
Optimus was silent.
Ratchet stood abruptly, unable to remain still, pacing the short length of their cramped quarters like a mech trying to outrun his own terror.
“We are already rationing energon crystals. Rationing medical-grade energon. Rationing replacement parts. Do you have any idea how much a developing protoform requires? How unstable early spark formation can be? How much strain carrier systems undergo during critical gestation?”
His voice cracked slightly on the last word, but he pushed forward.
“Then there are growth outbreaks. Protoform surges. Spark fluctuations. Frame misalignment. Nutrient deficiency. Carrier exhaustion. Premature emergence. Birth complications. Spark rejection. Energon absorption failures. Fragile ventilation systems. Undeveloped transformation protocols. And that is assuming nothing goes wrong during the actual carrying!”
Ratchet dragged a hand over his face, his vents coming too fast.
“And what happens if the Ark is attacked? What happens if I go into a critical phase during battle? What happens if I’m needed in the medbay and I can’t stand? What happens if we don’t have enough energon? What happens if the sparkling develops complications I cannot treat because I am the fragging patient? What happens if Megatron finds out? What happens if—”
“Ratchet.”
But Ratchet did not stop.
“What happens if I fail?” he demanded, and there it was—the wound beneath all the frantic medical terms, all the anger, all the fear. “What happens if I cannot carry properly? If I miss something? If I lose them? If I lose our sparkling because I am too old, too tired, too distracted, too—”
Optimus moved.
Not as Prime.
Not as commander.
As the mech who loved him.
He reached for Ratchet, both hands rising to frame the medic’s face with a gentleness that contrasted painfully with the strength in his frame. Ratchet’s words stumbled, but still he tried to continue, still he tried to drown himself in fear before hope could hurt him.
Optimus did not let him.
He leaned forward and kissed him.
Ratchet froze.
The kiss was not fierce. It was not demanding. It was steady. Warm. Deep with a tenderness Optimus rarely allowed himself to show outside the privacy of these walls. It silenced Ratchet more completely than any order ever could, drawing the frantic edge from his vents, stilling the storm in his field, grounding him in the simple reality of Optimus’s presence.
Optimus was there.
Optimus was holding him.
Optimus was not afraid of him.
When the Prime finally drew back, he did not release Ratchet’s face. His thumbs brushed lightly along the edges of the medic’s cheek plating, careful, reverent, as if Ratchet were something precious enough to survive war and fragile enough to break beneath careless hands.
“Listen to me,” Optimus said softly.
Ratchet’s optics shimmered, bright and furious and afraid.
Optimus let the war mask fall completely.
There was no Prime in that moment. No speech carved for soldiers. No distant symbol of hope.
Only the mech who had loved Ratchet for eons.
Only the sire of the tiny spark now growing within him.
“We are at war,” Optimus said. “I know. We have little energon. I know. The Ark is not safe enough, the medbay is not supplied enough, and the future is not certain enough. I know all of that, Ratchet.”
Ratchet’s mouth tightened.
“But we will not face this by surrendering to fear before our sparkling has even had a chance to live.”
The medic’s field trembled.
Optimus leaned closer, his voice lowering.
“You are not alone in this. Not for one klik. Not for one cycle. Not through the carrying, not through the birth, not through the first cry, not through every fear that comes after. I am here. I will be here. I will protect you both with everything I am.”
Ratchet looked away, but Optimus gently guided him back.
“And we will find a way,” he said, firm now—not as a commander making an empty promise, but as a mech shaping hope out of ruin with his bare hands. “We have survived impossible things before. We have built shelter from wreckage. We have kept each other alive through battles that should have ended us. We will adjust the rationing. We will secure supplies. We will protect the medbay. We will tell only who must know, when they must know. We will prepare.”
His optics softened.
“And when our sparkling comes into this world, they will not come into it unwanted. They will come into it loved.”
Ratchet’s face twisted, as though that was the thought that hurt the most.
Loved.
In the middle of war, surrounded by danger, uncertainty, and ruin—loved.
Optimus rested his forehead gently against Ratchet’s.
“I am afraid too,” he admitted, voice barely above a whisper. “But I am also happy. So happy that I do not know how to contain it.”
Ratchet’s hands slowly rose and closed around Optimus’s wrists.
For a long moment, neither of them spoke.
The Ark hummed around them. Somewhere beyond the door, the war continued. Soldiers moved through corridors. Reports waited. Megatron still existed. The universe remained cruel, hungry, and uncertain.
But inside that small, dim quarter, something impossibly delicate had begun.
A new spark.
A new future.
Ratchet’s vents shook as he finally allowed his forehead to press more fully against Optimus’s.
“You really think we can do this?” he asked, so quietly it almost broke Optimus’s spark.
Optimus smiled.
Not the calm, distant smile of a Prime trying to comfort his soldiers.
A real smile.
Tender. Bright. Devoted.
“I know we can,” he said. “Because it is ours.”
Ratchet closed his optics.
For the first time since reading the confirmation, his grip on fear loosened.
Only a little.
But enough for Optimus to pull him close again, one hand resting carefully against Ratchet’s chassis, where a tiny spark had already begun to change both their lives forever.
Optimus remained with Ratchet for several long moments after the first storm of panic had passed.
He did not try to smother Ratchet’s fear with empty comfort. Ratchet would have seen through that in an instant and probably thrown something heavy at his helm for the insult. Instead, Optimus stayed close, his large hands gentle around Ratchet’s smaller, tense ones, his thumbs moving in slow circles over the backs of the medic’s fingers.
“Ratchet,” he said quietly, “look at me.”
Ratchet did, though his optics were still sharp with dread.
Optimus’s voice was calm. Not the voice of the Prime speaking to soldiers, not the voice that carried across battlefields and made armies stand firm. This was softer. Warmer. Meant only for the mech in front of him.
“We will do this one step at a time.”
Ratchet gave a humorless little huff. “That sounds dangerously like optimism.”
“It is.”
“Of course it is. You are impossible.”
Optimus’s mouth softened into the faintest smile. “And yet you have endured me for eons.”
Ratchet’s expression flickered, something frightened and tender passing behind his optics before he quickly buried it beneath irritation again.
Optimus continued before the medic could retreat too far into worry. “First, we tell the Autobots.”
Ratchet’s vents hitched. “Absolutely not.”
“Ratchet—”
“No. I am not walking into the common area and announcing to the whole Ark that I am sparkled like some public medical report.”
“I am not asking you to make a spectacle of yourself,” Optimus said gently. “But we cannot hide this from them. Not completely. Not safely.”
Ratchet looked away, jaw tight.
Optimus leaned closer. “You will need support. The medbay will need preparation. Energon rations may need to be adjusted. Security around you will need to be strengthened. If anything happens during a battle, they must know enough to protect you.”
Ratchet’s hands tightened around his.
“And what exactly do you plan to say?” the medic asked darkly.
Optimus hesitated.
The truth was, he had not fully shaped the words yet. How could he? There were no proper words for something so fragile and enormous. No neat sentence that could contain the reality that Ratchet carried a sparkling, that Optimus was going to be a sire, that amid war and ruin a new spark had somehow chosen them.
“I will tell them there is something important they must know about us,” Optimus said at last. “About you and me.”
Ratchet stared at him for a long moment.
Then he sighed in defeat, deep and exhausted.
“Fine,” he muttered. “But if this becomes a circus, I am blaming you.”
Optimus’s optics warmed. “Fair.”
“And if anyone asks invasive questions, I reserve the right to threaten them medically.”
“I expected nothing less.”
Ratchet pointed at him. “Do not sound fond of that.”
“I am always fond of you.”
Ratchet’s glare weakened for half a klik before he turned away, muttering something very unkind about Primes, sentiment, and processor damage.
Not long after, Optimus called the Autobots together.
The main common area of the Ark filled quickly, as it always did when their Prime summoned them. Soldiers abandoned repairs. Scouts came in from patrol briefings. Engineers arrived still carrying tools. Medics-in-training clustered near the back, worried that something had gone wrong in the medbay. Bumblebee slipped in beside Bulkhead, bright with curiosity. Ironhide crossed his arms and looked ready for either a battle plan or bad news. Ultra Magnus stood rigid and attentive. Elita-One appeared near the front, her optics moving first to Optimus, then to Ratchet, lingering there a fraction too long.
Prowl stood quietly to one side.
That, Ratchet thought with immediate suspicion, was never a good sign.
Ratchet remained half a step behind Optimus, arms folded tightly across his chassis, every line of his frame radiating warning. He looked like a mech prepared to bite the first person who smiled too widely.
Optimus stepped forward.
The Ark quieted around him.
“My friends,” he began, steady and solemn, “there is something I must reveal to you. It concerns Ratchet and myself.”
He did not get any further.
Prowl blinked once.
Then, with the calm cruelty of a mech who had apparently been waiting for this day for vorns, he said, “We know.”
Optimus stopped.
Ratchet’s optics narrowed instantly.
The silence that followed was not shocked. Not heavy. Not frightened.
It was expectant.
Optimus looked at Prowl. “You know?”
“Yes,” Prowl said.
A small murmur passed through the gathered Autobots.
Ironhide snorted. Bumblebee made a strangled sound that might have been a laugh and immediately pretended to cough. Elita-One pressed her lips together, visibly fighting a smile. Even Ultra Magnus, Primus help them all, looked as though he considered the matter old administrative knowledge.
Optimus turned slowly, looking over the room.
“You all know?”
Several Autobots nodded.
“Of course we know,” Ironhide said.
Bulkhead shifted the massive crate he was carrying against his hip. “Kind of hard not to.”
Ratchet’s expression became deadly. “Hard not to what?”
Bulkhead wisely looked at Optimus instead.
Optimus, however, was not listening to the undertone in the room. He was processing something else entirely. His spark gave one startled pulse after another, surprise mixing with a strange, quiet relief.
They knew.
Somehow, they already knew.
Ratchet would not have to say it aloud before everyone. Optimus would not have to find the right words. The Autobots already knew Ratchet was sparkled.
A part of him, innocent and deeply overwhelmed, accepted that conclusion with almost painful gratitude.
“How?” Optimus asked, still genuinely confused. “How did you know?”
Prowl’s optic ridge lifted faintly. “Optimus.”
“That is not an answer.”
Bumblebee finally gave up pretending not to laugh. “You two were not exactly subtle.”
Ratchet’s helm snapped toward him.
Bumblebee immediately looked at the floor.
Optimus frowned slightly. “Not subtle?”
Elita-One’s mouth curved. “No.”
Ironhide gave a rough chuckle. “Prime, Ratchet yells at everyone, but he only yells at you like he expects you to come home to him afterward.”
Several Autobots made sounds of agreement.
Ratchet looked ready to commit violence.
Optimus blinked.
Something in the conversation was not aligning, but he had not yet found the broken piece.
Then, with the greatest innocence possible from a Prime, a war leader, and a soon-to-be sire, Optimus asked, “But how did you know Ratchet was sparkled?”
Everything stopped.
Not quieted.
Stopped.
The entire Ark seemed to freeze around the words.
Ratchet went rigid beside him.
For one terrible, suspended moment, no one moved. No one vented. No one even glanced away.
Then Ratchet very slowly lifted one hand to his face and dragged it down his plating in the most exhausted facepalm the Autobots had ever witnessed.
“Oh, for Primus’s sake,” he muttered.
Ironhide and Bulkhead dropped the crate.
It hit the floor with a thunderous crash.
The lid burst open, scattering medical cables, energon filters, spare plating, datapads, and carefully sorted equipment across the room.
No one cared.
No one even looked down.
Every optic was fixed on Ratchet.
Then the common area erupted.
“Sparkled?!”
“Ratchet is sparkled?”
“Wait, wait, we only knew you two were lovers!”
“You mean there is a sparkling?”
“How sparkled?”
“Optimus is going to be a sire?”
“Since when?”
“Is Ratchet carrying right now?”
“Ratchet can get sparkled?”
That last question sliced through the chaos with unfortunate clarity.
Ratchet’s helm turned slowly.
The Autobot who had spoken immediately realized that his continued existence had become uncertain.
Ratchet’s optics burned.
“Would you like me to demonstrate Cybertronian reproductive compatibility using your internal systems as educational material?”
“No,” the Autobot said quickly. “No, I would not.”
“Excellent. You may yet survive the cycle.”
But the questions did not stop.
Within the next astrosecond, Optimus and Ratchet were surrounded. The Autobots crowded close, their shock bursting into disbelief, concern, excitement, and the kind of frantic tenderness that only soldiers at war could show when presented with proof that life still dared to exist among them.
Bumblebee was practically vibrating. “There’s going to be a sparkling on the Ark?”
Bulkhead stared at Ratchet like he had just witnessed a miracle. “A real sparkling?”
Ironhide looked from Ratchet to Optimus, his rough face softening despite himself. “And you’re the sire?”
Optimus, still catching up to the disaster his own innocence had caused, straightened almost instinctively.
“Yes,” he said.
The word left him with quiet pride.
That single answer changed the room.
The questions softened.
The laughter faded into something warmer, deeper. The Autobots looked at Ratchet differently now—not as their terrifying medic, not as the mech who could repair a shattered frame while insulting the patient’s entire lineage, but as a carrier.
As someone holding a new spark inside him.
As someone suddenly precious in a way none of them had expected.
Ratchet noticed.
His arms tightened around himself, defensive at first. Then his optics lowered briefly, overwhelmed by the sheer force of their attention.
Elita-One stepped closer, her voice gentle. “Confirmed?”
Ratchet’s jaw worked once before he answered.
“Yes,” he said quietly. “Today.”
For once, no one made a joke.
No one teased.
Even Ironhide looked subdued.
In the middle of war, aboard a battered ship, with Megatron and the Decepticons waiting beyond every fragile defense they had, there was a sparkling.
A new life.
A future.
Something the war had not yet touched.
Optimus looked around the room, and only then did understanding finally unfold inside him.
They had not known Ratchet was sparkled.
They had known about him and Ratchet.
For eons, they had known.
All those careful glances. All those restrained touches. All those excuses about shared quarters, late-night medbay visits, private arguments, and Ratchet’s particularly vicious concern for his well-being.
The Autobots had seen all of it.
They had always seen it.
They had simply chosen to let Optimus and Ratchet believe they were hidden.
Optimus turned toward Ratchet, apology already forming in his optics.
Ratchet glared at him with the full exhaustion of a medic who had just had his most private medical condition announced by accident to the entire faction.
“You,” Ratchet said, pointing one finger into Optimus’s chest, “were supposed to reveal one secret.”
Optimus lowered his helm slightly. “I believed they already knew the more urgent one.”
“They knew we were fragging, Optimus!”
Bumblebee made a choking noise.
Elita-One turned away, shoulders shaking.
Prowl’s expression did not change, but Ratchet knew laughter when he saw it hiding behind discipline.
Ratchet’s optics cut toward him. “Do not.”
“I said nothing,” Prowl replied.
“You were thinking it loudly.”
Prowl wisely fell silent.
Optimus, still very much embarrassed and very much happy, reached for Ratchet’s hand.
Ratchet looked down at their joined fingers.
The room saw it.
For the first time, Optimus did not try to hide.
Neither did Ratchet.
Around them, the Autobots began speaking again, softer now but no less excited. Security plans were already being murmured. Medical supply concerns passed from one bot to another. Bumblebee asked if sparklings liked music. Bulkhead began carefully collecting the spilled equipment, though his optics kept flicking back to Ratchet as if afraid the medic might vanish.
Ratchet ex-vented heavily.
“Well,” he muttered, “so much for telling them slowly.”
Optimus’s thumb brushed over his knuckles. “I am sorry.”
“You should be.”
“I am also happy.”
Ratchet looked at him sharply.
Optimus smiled—not as Prime, not as commander, but as the mech who loved him and the sire of the spark he carried.
Ratchet tried to hold onto his irritation.
He failed.
Only a little.
But enough.
The Autobots had known one secret for eons.
Now they knew another.
And as the Ark hummed around them, battered and overcrowded and terribly unsafe, Ratchet realized with reluctant, aching clarity that Optimus had been right about one thing.
They would not be alone.
Not anymore.
Obviously, it would not be easy.
Nothing about creating life had ever been easy—not on Cybertron, not even during the golden ages, when energon flowed freely, medical towers still gleamed beneath the light of the Well, and carriers were surrounded by specialists, attendants, and machines built for the sole purpose of keeping both carrier and sparkling alive.
On the Ark, in the middle of war, it would be more than difficult.
It would be dangerous.
Cybertronian gestation lasted thirteen long months.
Thirteen months in which the carrier’s frame changed gradually, then relentlessly. At first, the alterations were subtle: a shift in weight distribution, a change in energon consumption, a faint but constant pull from the new spark forming deep within the carrier’s chamber. Then came the visible changes. The chassis broadened and rounded to make space for the developing protoform. Armor seams adjusted. Internal systems rerouted power. Cables stretched and softened. The carrier’s entire body became a living shelter.
By the final months, movement could become difficult. Walking without assistance was often impossible, depending on the size, strength, and strain of the protoform. The carrier required far more energon than usual—not merely to survive, but to feed the tiny frame forming within them. Sometimes standard energon was not enough. Sometimes the carrier needed mineral-rich infusions, refined crystals, or direct feeder-line support so the protoform could receive what it needed to stabilize, harden, and grow.
Ratchet knew every stage.
He knew every complication.
He knew every terrifying statistic hidden beneath the clinical language of medical records.
Because gestation was only the beginning.
After birth came the true test: the long, fragile, miraculous process of becoming Cybertronian.
**Protoform Stage — Birth to One Year**
The first year of life was called the protoform stage.
During this phase, the newborn remained curled and closed-eyed, little more than a small, dark-gray mass of soft living metal. There were no proper colors yet, no clear armor shape, no stable transformation structure. The frame was shrunken and delicate, as if the sparkling had entered the world before the universe had finished deciding what they would become.
This was the first truly critical stage.
A protoform could not defend itself. It could barely regulate its own temperature, energon intake, ventilation, or spark rhythm without constant care. Its metal was soft enough to bruise under careless handling. Its cables were thin and vulnerable. Its spark casing was still forming. Too much cold, too much heat, an infection, poor energon, a fall, a power fluctuation—almost anything could kill a protoform.
Literally anything.
It was why carriers rarely slept properly during that first year. It was why sires hovered. It was why medics checked and rechecked the same readings until exhaustion blurred their optics.
A protoform was not weak because it lacked life.
It was fragile because it was still becoming.
**Sparkling Stage, First Phase — One to Two Years**
The first sparkling phase began the moment the protoform opened its optics for the first time.
That first opening was sacred to many Cybertronians. It meant the protoform’s systems had stabilized enough for awareness to truly begin. The sparkling started to move with intention, not merely instinct. Tiny servos twitched. Small claws or fingers curled around cables, blankets, armor edges, and the hands of those who held them. Their optics followed light. Their audials turned toward familiar voices.
During this stage, the sparkling slowly began gaining control over their own body.
They learned how to lift their helm. How to reach. How to crawl, drag themselves, or roll depending on frame type. Their vocalizer began producing early chirps, trills, static bursts, and broken sounds. Their spark field, once only a faint pulse, began reaching outward in clumsy waves of need, fear, recognition, and comfort.
This stage lasted about a year.
By its end, the first hints of shape appeared. Not full armor, not yet, but suggestions. The beginning of wings, wheels, door panels, crests, vents, claws, or plating. The body began whispering what kind of mech or femme the sparkling might someday become.
**Sparkling Stage, Second Phase — Two to Five Years**
The second sparkling phase began when the sparkling’s colors finally emerged.
It was one of the most emotional milestones in a Cybertronian life.
The dull gray of protoform metal slowly gave way to the colors hidden in the sparkling’s coding. Sometimes the colors appeared gradually, like dawn spreading across the chassis. Sometimes they came in sudden patches after a growth surge, startling the carrier half to death. Red, blue, white, gold, black, silver, green—family lines and frame types often revealed themselves in those first shades.
By this stage, the sparkling had a clearer body shape. Their plating began to harden. Their limbs strengthened. Their helm crest, wings, wheels, armor edges, or other inherited traits became visible enough for everyone to argue about who the sparkling resembled most.
But beauty came with pain.
This phase lasted roughly three years and was considered the second most critical stage of development.
The chassis did not grow smoothly. It expanded in bursts. Small growth outbreaks could strike without warning, leaving the sparkling aching, fevered, irritable, and frightened by the sudden changes inside their own frame. Armor seams stretched. Cables lengthened. Internal pathways expanded. The sparkling’s body demanded more energon, more minerals, more rest, and more careful monitoring.
It was also during this phase that the dentae began forming.
Once the dentae emerged, the sparkling could slowly begin eating softened solid energon. Not all at once. Never carelessly. Their systems had to learn how to process more than liquid or feeder-line nourishment. Each new crystal texture had to be introduced gradually, watched closely for rejection, overload, or digestive distress.
Many carriers dreaded this stage.
Not because it lacked joy, but because every sign of growth came with the fear that something might go wrong.
**Youngling Stage — Five to Eighteen Years**
After the first major growth stages ended, the sparkling became a youngling.
This began around the fifth full year.
By then, the frame was far more stable. The sparkling could move freely, communicate more clearly, eat solid energon with less assistance, and begin learning the basics of Cybertronian life: language, manners, frame care, transformation theory, social bonds, self-defense, history, and whatever specialized knowledge their guardians were brave—or foolish—enough to let them touch.
Younglings were still children, but they were no longer helpless.
They had opinions.
Often very loud opinions.
Between ten and eighteen years old, most younglings entered what was commonly called Cybertronian pre-adolescence. This was when independence began to sharpen. They questioned orders. Tested boundaries. Developed preferences, loyalties, ambitions, and sometimes terrifying levels of confidence unsupported by experience.
Fortunately, by this point, growth was less violent than in the sparkling years. Their frames still changed, but in smaller, steadier, mostly painless stages. Their height increased naturally. Their limbs lengthened. Their armor settled. Their transformation systems grew more reliable.
They were not adults yet.
But they were beginning to look toward the kind of adults they might become.
**Young Adulthood — Nineteen Years to Five Hundred Vorns**
At nineteen full years, a Cybertronian entered young adulthood.
This period could last until roughly five hundred vorns.
To other species, that span would seem impossible, but Cybertronians were not built for short lives. Young adults were already functional members of society. They could train, fight, work, study, bond, command, create, and choose their own paths. Most had reached close to their adult height, and their frames had largely stabilized.
Growth slowed dramatically during this period.
For many, it stopped altogether after a certain point. For others, especially larger frame types or unusual builds, a little additional growth might continue for some time. These late changes were rare, but not unheard of.
Young adults were strong, capable, and independent.
But among Cybertronians, they were still considered young.
Still learning.
Still becoming.
**Adulthood — Five Hundred and One Vorns and Beyond**
A Cybertronian was generally considered a full adult after five hundred and one vorns.
By human counting, that meant approximately forty-one thousand five hundred years of life.
By this stage, their frame was fully mature. Their systems had settled into long-term stability. Their armor had hardened to its adult density. Their personality, field habits, combat style, skills, and social bonds had usually become deeply established.
Adults carried history in their frames.
Scars. Rebuilds. Upgrades. Losses. Victories. Old loyalties. Old regrets.
Some became leaders. Some became medics, scientists, builders, archivists, warriors, guardians, explorers, teachers, or artisans. Some remained ordinary citizens, which in Ratchet’s opinion was often the most underappreciated kind of survival.
To reach adulthood was no small thing.
Not in a species built to endure millions of cycles, but constantly threatened by war, famine, politics, accidents, disease, and the cruelty of other Cybertronians.
**Elders and Ancients**
After adulthood came the older classifications, though even Cybertronians disagreed on the exact terms.
Some records called any Cybertronian older than two millennia an elder. These were bots whose lives had stretched long enough to witness entire political eras rise and fall. They were respected, feared, ignored, or argued with depending entirely on their personality and how insufferable they had become with age.
Ancients were something else.
True Ancients were often counted at ten thousand eons old or more—beings so old that their memories sometimes reached beyond reliable history and into legend. Their names appeared in damaged archives, temple records, creation myths, and half-corrupted datatracks from before the modern age.
No one knew for certain how long a Cybertronian could truly live.
There were reports of Elders who had survived for mega-years. Some records spoke of beings more than five thousand millennia old, their sparks still burning after civilizations had risen, shattered, and been rebuilt around them.
Whether those reports were truth, myth, exaggeration, or reverence made little difference.
Cybertronians were a long-lived people.
They were built to endure.
And yet, for all that endurance, every new sparkling still began the same way.
Small.
Soft.
Helpless.
A fragile spark wrapped in dark metal, utterly dependent on the hands that held them and the world that chose whether to protect them.
That was what terrified Ratchet most.
Not the length of Cybertronian life.
Not the science.
Not even the war.
But the knowledge that something so tiny could someday live for millennia—
if only they survived the beginning.
The Autobots knew the weight of what had just been placed before them.
A sparkling was not merely a child.
A sparkling was the beginning of an entire Cybertronian life. A future that had to be built from nothing but spark, metal, energon, patience, and devotion. It meant thirteen months of dangerous gestation, a fragile protoform stage, years of painful growth phases, and a thousand different ways things could go wrong before that tiny spark ever reached younglinghood.
They knew that.
Bumblebee, Cliffjumper, and Smokescreen were young adults by Cybertronian standards, with Bumblebee the youngest among them. They were old enough to fight in a war, old enough to bleed for a cause, old enough to carry weapons and follow orders and look death in the optics without flinching.
And yet even they had once been small.
Once, they had been soft protoforms. Fragile sparklings. Younglings with too much curiosity and not enough sense. Someone had protected them through every dangerous stage of growth.
Now, it would be their turn.
They would have to help Ratchet and Optimus create a new Cybertronian from scratch.
Nothing about it would be easy.
Nothing at all.
Prowl was the first to recover fully.
The shock in his optics vanished behind calculation so quickly it was almost frightening. In the space of a few kliks, the strategist disappeared, and the second-in-command emerged with ruthless precision.
“Wreckers,” Prowl said sharply.
Several helms turned toward him.
“You will take a team to the mines. Quietly. We need more energon crystals in reserve immediately. Not standard combat reserves—carrier-grade, protoform-grade, and mineral-rich deposits if you can find them. No unnecessary risks, no open transmissions, no mention of why.”
Ironhide gave a low grunt of approval. Bulkhead straightened at once. A few Wreckers exchanged looks, already understanding that this was not a request.
“First Aid. Pharma.”
Both medics snapped to attention.
Prowl turned toward them. “The medbay is yours now.”
Ratchet’s helm whipped around.
“Absolutely not!”
The shout cracked across the room like blaster fire.
Several Autobots flinched on instinct.
Prowl did not.
He turned back toward Ratchet with the calm of a mech who had apparently accepted death and found it administratively inconvenient.
“Yes,” Prowl said.
Ratchet stared at him. “Excuse me?”
“The medbay is now under First Aid and Pharma’s operational supervision for standard cases,” Prowl continued evenly. “You will retain consultative authority only when necessary.”
Ratchet’s optics burned white-hot. “Consultative authority?”
“You are sparkled.”
“I am still the chief medical officer!”
“You are also a carrier,” Prowl said, and lifted one finger before Ratchet could explode again. “Which means you will not overwork yourself, you will not spend twenty-six straight hours repairing idiots who got themselves shot, and you will not crawl into a ventilation shaft to fix a coolant rupture because everyone else is apparently incompetent.”
Ratchet’s mouth opened.
Prowl pointed directly at him.
“You have no choice.”
The entire common area went silent again.
Prowl’s voice remained perfectly composed.
“You are carrying a developing spark. You will sit down when ordered. You will rest when required. You will remain away from hazardous repairs, battlefield surgery, unstable equipment, explosive residue, unknown chemical exposure, and any patient who is leaking enough energon to drown a minibot.”
Ratchet took one dangerous step forward.
Optimus caught him around the waist before murder could occur.
“Let go of me,” Ratchet hissed.
“No,” Optimus said gently, though his arms remained very firm.
“I am going to rearrange his spinal struts.”
“I know.”
“He deserves it.”
“That is possible.”
Prowl looked entirely unmoved. “Perceptor. Wheeljack.”
Perceptor straightened at once. Wheeljack, who had been watching the whole exchange with far too much enjoyment, tilted his helm.
“You will modify Optimus and Ratchet’s quarters,” Prowl ordered. “Quietly. The room must be prepared for carrier rest, protoform containment, sparkling care, low-light recharge cycles, temperature regulation, filtered ventilation, sound dampening, emergency medline access, and reinforced privacy locks.”
Wheeljack’s optics brightened.
“Oh, finally,” he said.
Ratchet paused mid-struggle.
Optimus turned his helm.
Wheeljack spread his hands with absolutely no shame. “What? I’m just saying, thanks to Primus we can finally install a proper couple berth in there. The two of you pretending that narrow old thing was enough has been depressing for vorns.”
Optimus blinked.
Ratchet went very, very still.
The kind of stillness that made every Autobot near Wheeljack subtly move away from him.
Optimus looked startled, as though the concept of the entire Ark having opinions about his berth arrangements had only just reached his processor.
Ratchet looked like he was deciding which of Wheeljack’s limbs to remove first.
Wheeljack’s grin faltered. “Too soon?”
“Optimus,” Ratchet said softly.
“Yes?”
“When you release me, I am going to kill him.”
Wheeljack took one careful step behind Bulkhead.
Prowl, proving once again that he had no sense of self-preservation when duty was involved, continued.
“This information does not go into the main systems. No official logs. No shared reports. No automated medical updates. No casual comm chatter. No mention of Optimus and Ratchet being bonded, lovers, companions, creators, or anything else that could be intercepted.”
His optics swept over the room.
“Outside the Ark, no one knows. Not the Decepticons. Not neutral channels. Not old contacts. Not supply runners. Not even in coded conversation unless absolutely necessary.”
The warmth from the announcement hardened into something solemn.
Everyone understood why.
Megatron could never know.
Not now.
Not while the sparkling was still only a forming spark inside Ratchet’s chassis. Not while Ratchet would become slower, heavier, more vulnerable with every passing month. Not while the Ark itself remained a battered ship held together by desperate repairs and stubborn loyalty.
Prowl looked toward Optimus. “Prime, you will continue appearing on the battlefield as usual.”
Optimus’s expression tightened, but he nodded.
“If your behavior changes too abruptly, Megatron will notice,” Prowl said. “The Decepticons will look for weakness. They will look for a reason. We cannot give them one.”
Then Prowl turned back to Ratchet.
“Ratchet will remain inside the Ark. The system explanation will be that he is treating severely injured Autobots after recent combat engagements and overseeing long-term recovery cases.”
Ratchet’s optics narrowed. “I hate how reasonable that is.”
“You are welcome.”
“That was not gratitude.”
“I accepted it anyway.”
A few Autobots made the mistake of smiling.
Ratchet glared, and they immediately stopped.
Prowl folded his arms behind his back. “From this moment on, Ratchet is never alone inside the Ark.”
Ratchet made a strangled sound. “I beg your pardon?”
“One or two Autobots will remain within response distance at all times,” Prowl said. “Not to interfere. To respond in case of emergency.”
“I do not need babysitters.”
“You need security.”
“I am security!”
“You are a sparkled medic with a history of overexertion, poor self-preservation, and violent refusal to rest.”
Ratchet looked personally insulted by the accuracy.
Optimus, perhaps unwisely, murmured, “He does have a point.”
Ratchet turned his glare on him next.
Optimus wisely looked away.
Ratchet wanted to argue.
He wanted to argue very badly.
He wanted to tear Prowl’s entire plan apart on principle, then put it back together only so he could criticize it again. He wanted to insist he was fine. That he could still work. That he did not need guards, adjusted rations, a modified berth, medics stealing his medbay, or Wreckers being sent to mine energon crystals because his frame had decided to carry a sparkling in the middle of a war.
But the terrible thing was that Prowl was right.
About everything.
Ratchet hated that most of all.
He looked around the room and saw it clearly now. Not curiosity. Not just excitement. Determination.
The Autobots had already accepted the sparkling as theirs to protect.
There was no vote. No hesitation. No question of whether it was worth the trouble.
The moment they understood what Ratchet carried, the entire Ark had shifted around him like armor plates closing over a spark chamber.
Optimus saw it too.
His field softened, overwhelmed with gratitude he did not immediately know how to voice. He looked over his Autobots—his soldiers, his friends, his family—and for a moment the Prime’s war-worn expression cracked with something painfully gentle.
“Thank you,” Optimus said quietly.
The room settled.
He looked from one face to another, optics bright with emotion. “I know what we are asking. I know the risks. Ratchet and I did not expect—”
“Elita-One stepped forward before he could finish.
“You would not have needed to ask,” she said.
Optimus fell silent.
Her voice was steady, warm, and impossible to argue with. “We would have done this anyway.”
Around her, several Autobots nodded.
Elita’s optics shifted to Ratchet, and her expression softened.
“We owe both of you more than we can ever repay. You have carried this faction through things that should have destroyed us. Optimus with hope. Ratchet with his hands.” A faint smile touched her mouth. “And his terrible temper.”
Ratchet’s optics narrowed.
But there was no heat in it.
Elita continued, “Now let us carry something for you.”
The words struck Ratchet harder than he expected.
For a moment, he could not answer.
His throat felt too tight. His spark pulsed unevenly beneath his armor, and beneath that—faint, almost impossible to feel unless he focused—the tiny presence of another spark answered with a soft, fragile hum.
He looked away quickly.
“It won’t be easy,” Ratchet said, voice rougher than before. “You all know the stages. Gestation will be dangerous. Protoform care will be worse. Growth phases will disrupt recharge cycles for everyone near the medbay. There will be crying. Pain responses. Energon feedings. Emergency scans. Temperature fluctuations. No one will recharge properly in this Ark for years.”
Bumblebee smiled.
“That already happens.”
Ratchet pointed at him. “Do not make me regret not terminating your audials when you were younger.”
Bumblebee’s smile widened.
Ratchet ex-vented, exhausted.
Optimus stepped closer to him, still holding his hand openly before everyone. His thumb brushed gently over Ratchet’s knuckles.
“We will make it work,” Optimus said.
Ratchet looked at him.
Optimus’s voice carried through the common area, calm and strong, but this time it was not a speech meant for war. It was a promise meant for family.
“We will find a way. We will adjust. We will protect the Ark, protect the medbay, protect you, and protect the sparkling.” His optics softened. “We are not alone anymore.”
Ratchet swallowed.
No.
They were not.
All around them stood Autobots ready to mine crystals, rewrite schedules, modify quarters, guard hallways, falsify harmless reports, take over medbay shifts, and tear apart any threat that came too close.
They were battered. Exhausted. Under-supplied. Outnumbered.
But they were together.
And if the universe wanted to harm the Prime’s heir, it would have to go through every Autobot on the Ark first.
Ratchet knew them.
He knew their stubbornness. Their loyalty. Their recklessness. Their impossible, infuriating, spark-deep devotion.
They would burn through their own fuel lines before letting that sparkling fall into danger.
They would fight Megatron himself with broken weapons and bare hands.
They would destroy the entire universe if that was what it took to keep the Prime’s heir safe.
Ratchet lowered his optics to his chassis, one hand rising before he could stop it.
Still too early.
Still too small.
Still only a fragile spark beginning the long, dangerous work of becoming.
Optimus’s hand settled over his.
Around them, the Autobots stood like a living wall.
And for the first time, Ratchet let himself believe—not completely, not without fear, but enough—
that this sparkling might survive.
That this sparkling might be born.
That this sparkling might grow.
That, perhaps, even in the middle of war, the Ark could become a home.