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Let me teach you how to be an Omega.

Summary:

When the beloved Robin presents as an omega, the Justice League is eager to help him adjust to his new role.

After all, every good omega knows how to serve his alpha.

Notes:

This doesn't qualify as a rarepair because Clark/Tim already has more than 100 fics... I found that out after I had already written half of it D:

Of course, this is just another chapter in the series. The others do meet the requirements ah

(See the end of the work for more notes.)

Work Text:

The meeting room fell silent the moment Batman stepped inside. Every gaze snapped toward him, then shifted—without the slightest attempt at subtlety—to the young man standing behind him.

“Our dear Robin has had a late presentation,” Batman announced, giving a firm tug on the leash attached to the collar around Robin's neck. “And he needs to learn his new place properly.”

A murmur rippled through the room. Surprise. Uncertainty. Heat. The League's alphas stared openly at the young man.

Tim lowered his head and tilted it slightly, exposing the line of his throat.

“I am at the service of the most respected alphas in our society,” he murmured, his voice soft and low, barely carrying across the room. “This omega appreciates your cooperation in helping him improve.”

He wore a pair of very short briefs that clung tightly to his ass, lifting the curve of it while outlining the bulge between his legs. Anyone looking closely could see moisture darkening the green fabric.

His shirt was a tempting shade of translucent red, revealing definition far too pronounced for an omega across his abdomen and arms. It only made him more difficult to ignore.

Not as fragile or delicate as most omegas, Tim looked like an unusual specimen. And an incredibly tempting one.

“He still doesn't have a controlling alpha,” Batman informed them.

The words seemed to sharpen the hunger in every alpha's gaze. “We believe he died.”

Tim clasped his hands tighter in front of himself. Heat and desire churned through the room, thick enough to feel, pressing against his lungs with every breath.

An omega without a controlling alpha was dangerous.

“We have to keep him under control. Until his soul accepts another alpha, it is our duty to keep him contained.”

Batman left him standing in the center of the circle.

The alphas already looked ready to throw themselves at him and fight anyone who tried to stand in their way.

A sea of blood held back by Batman's presence alone.

“This has to be fair for everyone,” he said. “We'll draw sticks. The order will go from the largest first to the smallest last.”

Batman swept a narrow-eyed look across the room.

“No tricks.”

And so it was done. Tim's future was divided among them through a childish game of chance.


Superman went first.

Clark looked at him with barely restrained hunger. He had an omega at home. He had pups carrying his name. None of it mattered against instincts carved into his caste.

“You have to learn things the Kryptonian way,” he said, his voice dropping into a deep purr that slid through Tim from head to toe.

Tim trembled. Heat pooled low in his body, and he hated how easily it answered.

Clark lifted a hand in a simple gesture.

Tim obeyed.

Dick had already taught him this. After his presentation, he had spent days with the beta, trying to find a kind of comfort and pleasure that Dick could never truly provide. They had both tried anyway.

Tim raised his hands above his head, catching the flicker of approval in Clark's gaze and finding himself craving more of it.

“Good boy,” Clark murmured.

From the ceiling, taut ropes descended.

They had been used during critical moments, whenever tensions within the League threatened to boil over and distractions became necessary. One of them would bring their omega, and the others would share the relief.

That was how things had always been done.

A system designed to keep peace among the alphas and manage the endless demands of omega biology. Nobody belonged to anyone.

Everyone belonged to everyone.

Clark wrapped the rope around Tim's wrists, securing it with practiced care while making certain it wouldn't chafe or cut into his skin.

“Do you want it tighter?” he asked.

It wasn't a sincere question. It was a question with only one acceptable answer.

Questions were not asked to give omegas a choice. They were asked to make them speak. To make them participate in a decision that had already been made.

“Yes, please, Alpha.”

Clark smiled, revealing neat white teeth and the slender points of his fangs.

Tim swallowed. His mouth watered at the sight of them. At the thought of those teeth sinking into him.

The alpha tightened the restraints another notch before stepping back to inspect his work.

Tim already knew how this went.

He had been allowed to watch before, as if they had expected dormant alpha instincts to emerge eventually. Or perhaps simply to reassure the omegas who eventually ended up in the center.

He should have recognized the truth sooner.

The way his body trembled. The way his thoughts blurred. The way some hidden part of him had always wanted to be the one standing there.

Back then, he had told himself it was wrong.

That a beta shouldn't want that kind of control. Shouldn't long for it. Especially from people powerful enough to break him.

Dick had warned him once. And afterward, he had held him together.

Being with Dick had felt like the closest thing to the safety and protection Tim saw omegas receive.

Now, he regretted ever starting a romantic relationship with the beta. There was no future left for them. No matter how hard they tried, Dick could never be enough for the hunger growing inside him.

That hunger surged as the ropes pulled at his wrists, drawing his arms higher and higher until only the tips of his toes brushed the floor.

“You are beautiful,” Clark whispered.

He lifted the fabric meant to cover Tim and pressed the edge of it against his lips. Tim inhaled slowly before catching the cloth between his teeth.

Clark's smile deepened.

“I see you've had training.”

His gaze shifted from Tim to Batman, who answered with a barely perceptible shrug.

“Dick wanted to make sure he'd be safe.”

The explanation was simple. Nobody questioned it. A beta's presence had always been useful for younger omegas learning to navigate their caste.

Dick and Tim had been a tremendous help with Damian when he was younger.

Clark hummed thoughtfully. His hand settled on Tim's waist, warm and heavy, giving it a light squeeze.

“Even with all that muscle...”

His palm drifted across Tim's stomach. Tim shivered and instinctively tightened his abdomen. Clark's expression flickered with amusement as his nails traced the same path again.

“You still have the perfect proportions.”

His attention shifted toward Batman.

“Did you really never consider it?”

Batman growled immediately, offense sharpening his voice.

“Betas can be small,” he muttered through clenched teeth.

Clark raised a hand in surrender, though suspicion still lingered in his eyes.

And Tim noticed.

Besides Dick, Clark had been the only person he could talk to about the things he felt. Maybe Clark had understood what was happening long before Tim did.

And perhaps, somewhere beneath that understanding, he had been waiting. Quietly curious to see what would happen when it finally did.

Clark's hands slid higher until his thumbs rested against his sensitive nipples.

The strain in his muscles, combined with the heat coursing through his body, had left them painfully responsive. Even the faintest brush of air made them tighten.

With practiced restraint, Clark dragged his thumbs across the hardened peaks without fully pressing down. Just enough rough skin against softer flesh.

Tim bit harder on the cloth.

Saliva soaked the fabric, dampening his lips and chin. A muffled sound escaped him. Need burned in his eyes, plain enough to read.

Clark ignored it. “Don't beg, omega.”

His fingers closed around Tim's nipples. Nails bit into the sensitive flesh.

Tim smothered a cry as a sharp jolt tore through him from head to toe.

“You aren't allowed to ask. Just accept what you're given. Understood?”

Tim sucked in a shaky breath when Clark rolled the sensitive peaks between his fingers.

For a moment, all he could do was stare.

Clark's eyes narrowed.

“Understood, omega?”

His voice dropped lower. Threatening enough.

The sound sent heat flooding through Tim's body. He could feel moisture gathering beneath his clothes, warmth spreading along his skin. The fabric of his briefs pulled tightly against him.

Tim hesitated. Part of him wanted to nod and accept. Part of him wanted to refuse and discover exactly what that would earn him.

His gaze never left Clark's.

Dick had warned him countless times not to challenge alphas that way.

He couldn't help it. He wanted what the omegas had. He would submit if he chose to. When he chose to.  But he had no intention of surrendering a fight he could still win.

Maybe all of that would be stripped away eventually.

Right now, he didn't care. He wanted to understand what this was. What it meant.

Clark lifted an eyebrow, clearly entertained.

“But you already know how to get what you want without asking, don't you?”

He gave a sharp tug.

Tim clenched his teeth, swallowing the cry that surged into his throat.

It hurt. Far more than it should have. And still, some traitorous part of him wanted it again.

“Interesting,” Clark murmured.

A faint smile touched his mouth.

“Your scent is an open book, little Robin.”

Clark tugged again, and Tim twisted helplessly beneath the pull. Pain bled into pleasure until he could no longer separate one from the other. His breathing turned ragged. He squeezed his thighs together, chasing relief through a futile scrape of friction.

The alpha let him.

He watched Tim squirm while continuing to toy with his sensitive chest, pinching, tugging, and tracing slow circles over the hardened peaks with his thumbs.

Tim could have come from that alone.

And Clark knew it.

The alpha licked his lips. Saliva gathered in his mouth as his scent thickened in the air, flooding Tim's lungs and sending another wave of heat through his body.

And it wasn't only Clark. He could feel the attention of every alpha in the room.

They watched him openly, devouring him with their eyes. Waiting for their turn. Around him came the quiet sounds of movement and heavy breathing. They were watching him while taking care of their own needs.

The realization only made him burn hotter.

He was a feast laid out before them. They wanted him. They desired him. Tim couldn't remember the last time he'd felt this good.

Clark leaned in until his breath brushed Tim's ear.

“Dedicate your first orgasm to me, omega,” he purred. “You'll have many more before the night is over.”

Tim barely had time to process the words before a hand pressed over the fabric of his shorts, rubbing against the erection trapped beneath.

A cry tore out of him.

He tried to jerk away from the stimulation, only for a hand on his ass to hold him firmly in place.

There was nowhere to go.

His arms already ached from supporting his weight. The strain was slowly draining what little strength he had left.

Clark bent closer and closed his mouth around one of the sensitive peaks.

Tim broke.

The orgasm hit all at once.

Clark's hand never slowed. It continued its relentless rhythm through the fabric while his mouth suckled hard enough to sting. Every muscle in Tim's body tightened. His toes curled. Heat seized his stomach.

“Clark!”

The fabric slipped from his mouth as it fell open around the sound. A deep moan escaped him. His entire body shook where he hung suspended.

The scent of alphas intensified immediately.

Muffled groans joined his own. Musk saturated the room while the climax seemed to stretch endlessly through him.

Clark pressed himself against him and captured his mouth.

Tim parted his lips instinctively, allowing the alpha to deepen the kiss. The urgency of it swallowed him whole.

All Tim could do was moan against him.

Clark gripped his thighs and lifted him higher. His cunt pressed fully against Superman's hard cock.

“The best part is still ahead,” he growled.

Tim clung to the rope, keeping himself suspended while Clark shifted his briefs aside.

Something moved at the edge of his vision.

Clark caught it effortlessly.

A freshly opened condom.

A wounded sound escaped Tim.

“No. Not that,” he pleaded. “Inside. Please. Fill me.”

Clark didn't even glance at him. He merely nodded toward Batman while rolling the condom on.

Tim whined in frustration. The plea lingered in the quiet sounds he made and in the scent pouring off him as he tried to tempt Clark into changing his mind.

The alpha only looked amused.

“I can hold my breath, omega,” he mocked.

He shifted the fabric of Tim's underwear aside, exposing his wet cunt. A single finger brushed across him.

Tim shuddered and pushed his hips downward, instinctively seeking more.

Clark looked mildly irritated, though not concerned. Tim's lack of control would eventually become his alpha's problem. Or the problem of whichever alpha happened to be closest. In this case, Bruce.

The tip of Clark's cock brushed against his entrance. Tim forced himself to go still. He couldn't risk pushing the alpha any further.

Clark could easily decide to stop.

Closing his eyes, Tim drew a slow breath filled with Clark's scent and deliberately relaxed.

Something soft and damp touched his lips. Without opening his eyes, he caught the edge of the fabric between his teeth again and bit down hard.

Only then did Clark drive forward in a single deep thrust.

Tim cried out through clenched teeth. His entire body shook as he was opened without mercy.

Clark gave him no time to adjust. He gave him exactly what he had been begging for.

He moved immediately, hard and fast. Each thrust stretched him wide, withdrawing until only the tip remained before driving deep again.

Again. And again.

Each movement scraped against sensitive flesh, striking places that made his thoughts scatter and his breath catch in his throat. The relentless rhythm dragged him deeper into the blinding pleasure he had craved for so long.

What Dick could never give him. What Bruce had never dared to give him.

Clark was splitting him open with ruthless force, and Tim couldn't bring himself to want anything else.  So good. So full. He could have carried Clark's pups. He could have been a good omega. He could have pleased him.

If Clark wanted, Tim could have become his lover. His second spouse. Tim would have surrendered whenever he asked. However he asked.

A hand slipped beneath his underwear.

A muffled moan escaped him as strong fingers closed around him, moving with the same impossible strength as the body driving into him.

He no longer had the energy to hold himself upright.

Suspended by the restraints and supported only by Clark's grip, the ache in his arms faded beneath everything else. Each thrust reached deep inside him. Each stroke reignited the pleasure building through his body.

The orgasm hit without warning.

His back arched sharply. His legs spread as violent tremors ripped through him. Release spilled over Clark's hand and suit, staining the blue fabric.

Clark didn't slow down.

If anything, he drove deeper.

Harder.

Tim clenched his jaw. His eyes rolled back as another climax crashed through him before the first had fully faded. Slick spilled from his cunt and ran down his thighs.

Clark thrust forward one last time before stopping completely. A deep groan tore from his chest. His entire body shuddered.

Tim waited for the knot. Waited for the fullness. The stretch. The claim.

But it never came. There was no sudden pressure. No warmth settling inside him.

Nothing.

A wounded sound escaped him.

Hadn't he been enough?

Hadn't he satisfied his alpha enough to earn it?

“It's alright, omega,” Clark whispered breathlessly.

He eased back just enough to meet Tim's eyes while supporting him securely against his chest.

“When we use condoms, knots don't form. Remember?”

Tim looked up through wet lashes and shook his head.

He didn't remember.

Why would he remember something like that?

A gentle expression softened Clark's features.

He leaned down and pressed a kiss to Tim's forehead.

“We can't give you a knot. The alpha of your pack doesn't allow it.”

Clark released the restraints around his wrists, finally setting him free.

“But we can make you feel good in other ways. Alright?”

Tim hiccupped softly and sniffed.

Bruce didn't want that? Why not? The questions drifted through his mind, sluggish and unfocused. He couldn't hold on to them.

Clark let him go. Tim barely managed to stay upright before other hands caught him.

“Ready to find out what the good part really is, omega?”

Hal Jordan held up the second-largest stick.

Notes:

Thank you for the kudos. For commenting. Just for reading. I truly appreciate it all 💖