1 - 20 of 680 Works in Kryptonian Biology (DCU)
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Scientist Caste by MathHeretic (ClarkNewton)
Fandoms: Superman (Movie 2025), Superman (Comics), Lois & Clark: The New Adventures of Superman
07 Sep 2025
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Clark has a different secret awaiting discovery in Antarctica:
It isn't just that he won't hurt others (like Lex Luthor) if not attacked first. It's that he can't.
Kryptonians come in different breeds. Clark is literately a golden retriever (or golden retriever/collie mix) in human form.
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...𝒶𝓃𝒹 𝓉𝒽𝑒𝓃 𝓉𝒽𝑒𝓎 𝓌𝑒𝓇𝑒... by RenkonNairu
Fandoms: Superman - All Media Types, DCU (Comics), Batman - All Media Types
06 Sep 2025
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Clark and Bruce have been on the smooth track of an Idiots to Lovers slow burn for years.
Until Lex Luthor catches Superman in heat.
Now everything's different for everyone. Clark doesn't know what he's going to do about the pregnancy, he doesn't want Lex's pup, but he also feels obligated to keep it as a duty to his dying race. Bruce is grappling with feelings he didn't even realize he had for his best friend, and his own pups have no shortage of opinions on what Bruce should do about it. Meanwhile, Lex is still reeling from the discovery that the alien menace is an omega (or the alien equivalent of).
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On wobbly legs, he walked over and tried to get a closer look at one of the bylines. If his suspicions were correct, this would prove him right. “13th of may, 2019”.
Or: Leo Luthor-Danvers accidently travels back in time.
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On Krypton, Omegaverse biology is more than instinct—it is tradition, power, and destiny. When a child of a royal house comes of age, they are sent to the Star Hunt, a rite where they must claim their equal… or return empty-handed, branded by shame.
Kal-El, heir of the House of El, has reached his time. He is presented before the Kryptonian people as an Enigma—a superior being, capable of bending castes to his will.
Guided by the blood of his lineage and the hunger for conquest, he crosses the universe in search of the one who can awaken his senses. But no one among the countless worlds and dying stars proves worthy. His path finally brings him to an insignificant planet: Earth. A place of blue skies, restless seas… and humans who barely graze the edge of greatness.
Drawn by the yellow star—the sun—Kal-El discovers a warrior.
A man marked by age.Bruce Wayne. A Beta.
An impossible prey.But the prince of Krypton does not believe in the impossible. And in the game between hunter and prey, someone will end up caught in the web.
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Cacería Estelar by DaniDany
Fandoms: Superman - All Media Types, Batman - All Media Types
06 Sep 2025
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En Krypton, la biología Omegaverse no es solo instinto: es tradición, poder y destino. Cuando un hijo de casa real alcanza la mayoría de edad, es enviado a la Cacería Estelar, un rito donde debe reclamar a su igual... o regresar vacío, marcado por la vergüenza.
Kal-El, heredero de la Casa de El, ha cumplido su tiempo. Y es presentado ante el pueblo Kryptonita como un "Enigma" un ser superior capaz de doblegar las castas a su voluntad.
Guiado por la sangre de su linaje y la sed de conquista, viaja por el universo en busca de aquel que despierte sus sentidos. Pero nadie es digno entre mundos y estrellas consumidas. Su camino lo lleva a un planeta insignificante: la Tierra. Un lugar de cielos azules, mares inquietos... y humanos que apenas rozan la grandeza.
Curioso por la estrella amarilla el sol.
Kal-El descubre un guerro. Un hombre mayor marcado por los años.
Bruce Wayne. Un Beta.
Una presa imposible.Pero el príncipe de Krypton no sabe de imposibles. Y en el juego entre cazador y presa, alguien terminará cayendo en la red.
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Hours between Dog and Wolf by animuia
Fandoms: Superman (Comics), Absolute Superman (DC Comics), Batman - All Media Types
06 Sep 2025
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After accepting a deal with Bruce Wayne, Gotham's most notorious loan shark and mobster, Kal found himself working as Talia’s bodyguard along with Dick.
He figured he’d seen it all, that was until the sex pollen hit.
Series
- Part 2 of The Path from Earth to the Stars
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How an older brother should by Grimoraaa
Fandoms: Batman - All Media Types, Superman - All Media Types, DCU, DCU (Comics), Superman (Movie 2025)
06 Sep 2025
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Their youngest was a handful, he was alot like Bruce. And that was the difficult part of it.
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the toy story by mikaminato
Fandoms: Superman (Movie 2025), The Batman (Movie 2022), Superman - All Media Types, Batman - All Media Types
06 Sep 2025
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"I did, uh... I used them," he stutters. "I mean... just... you know." He gestures, the tips of his ears reddening. "By myself."
The image hits Bruce like a blow to the stomach: Clark spread out on his bed, naked and hard. A beautiful blush spreading across his body, a flush to his skin. The dildo pushed inside him as Clark cries out with the stretch and the sensation. Clark moaning as he fucks himself. Clark fucking himself. On a toy. On a dildo. In his ass.
"Okay," Bruce says, because what else is he supposed to say in a moment like that?
(Or, While investigating Superman, Bruce breaks into Clark Kent's apartment and finds some rather... interesting toys tucked away in his wardrobe. Among them is a double-ended one, and from there Bruce's mind begins to spiral out of control.)
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A Problem Shared by May_Seward
Fandoms: Batman (Comics), Superman (Comics), DCU (Comics)
06 Sep 2025
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‘I don't... understand,’ Clark finally admitted. ‘Where is this coming from?’
‘Selina. She has the same problem.’
Clark blinked. ‘Her problem... is that she thinks that I have feelings for Bruce?’
‘No, her problem is that Bruce is in love with you.’
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And The Ravens Will Dance by caybeemarie
Fandoms: Wednesday (TV 2022), Superman (Movie 2025), Addams Family - All Media Types
05 Sep 2025
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"I don't know why you're making such a big deal about this, Wednesday," Lenore says in that soft voice of hers. "Nevermore doesn't seem so bad."
"You're sister is right, my little viper, you are going to love it there," he says, his gaze falling back on his wife. "Won't they, Tish?"
"Of course they will, it's the perfect school for them," her mother's answer didn't make Lenore’s nerves any less frayed. What if she gets there and she's too much of an outcast for the outcasts?
Not vampire, not werewolf, not gorgon, not psychic or siren. Alien.
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Guessing Games by cavesongs
Fandoms: Superman (Movie 2025), The Batman (Movie 2022), DCU, Superman - All Media Types, Batman - All Media Types
05 Sep 2025
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Cat grinned, mischief sparking. “Gotham holds plenty of bachelor auctions concerning you, Mr. Wayne, but tonight the big draw is Superman. Any jealousy over his harem? It might rival yours.”
“Jealousy?” Bruce’s smile sharpened. “Not at all. If I had the chance, I’d join the harem myself.”
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Where Bruce Wayne wins an auction for three dates with Superman. For charity, of course.
[Ongoing]
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In A Week... Or So by auoph
Fandoms: DCU, Batman - All Media Types, Superman - All Media Types
05 Sep 2025
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It's dumb. I mean, who would use Lex Luthor as a self-insert for a Superman fan fiction? That would be... ridiculous.
That "who" in question just so happened to be Bruce Wayne.
Or Bruce is so horrendously down bad for Clark, he decided to write fanfics about Superman and Lex Luthor.
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The Mirror Divide by LadyArkin
Fandoms: Batman - All Media Types, Batman (Comics), Superman - All Media Types, Superman (Comics), DCU (Comics)
05 Sep 2025
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One ordinary night, Clark Wayne-Kent went to sleep in his bed. The next morning, his husband and children don’t recognize him. He has no baby. Their marriage never happened.
Instead of choosing fear, Clark embraces the people that he loves and tries his best to hold his family together. Because they never came together in his new place, Clark never shared Kryptonian technology with Bruce. And the differences in that sequence of events have consequences.
Series
- Part 3 of A World of Decisions
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A chemical reaction by Oldstonesrose
Fandoms: Superman - All Media Types, Batman - All Media Types, Teen Titans - All Media Types, Young Justice - All Media Types
05 Sep 2025
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The atoms molding, the chemicals crashing, the molecules forming—a human-machine.
His existence wasn’t mere luck. It was planned. Carefully crafted by a team of mad scientists. His creation a mere vengeance trap.
There was no autonomy, no sense of self. There wasn’t even a manual that came with the cloning.
Kon knew next to nothing about kryptonian biology.
“S-shit,” Kon choked out, blinking back tears. “Now what?”
His vision swam, disrupting the carefully blank look Robin was giving him as Kon stared down at the stick cradled in his hands.
Positive
“What am I . . .” Kon’s voice trembled. His whole body was shaking like a leaf in a windstorm. “What am I going to do? I didn’t even know this was possible !”
or Kon gets knocked up by his secret boyfriend Tim Drake. Chaos ensues.
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you've always been home to me, always home by nike_the_joyless
Fandoms: DCU (Comics), Robin (Comics), Superboy (Comics)
05 Sep 2025
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Bernard Dowd's life is going pretty well. He's twenty-six, has a stable career, two incredible partners, and plenty of time for his hobbies. So, obviously, when things are going that good what better time is there to have a baby?
One heat and almost a week of mind-blowing sex later, he's excited to enter a brand new chapter of his life. All he has to do to survive nine months of pregnancy and all its related hurdles. Pretty straightforward, right?
Except... the baby is a kryptonian hybrid. Which, turns out, might complicates things.
Oh, and all of a sudden, his parents are trying to reconnect.
Also, did he mention that his partners are superheroes? And so are their entire families? No?
Okay, so maybe things aren't going to be as straightforward as he hoped.
Series
- Part 3 of tmbrkn omegaverse
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What Doesn't Kill You by Sparkler468
Fandoms: Superman - All Media Types, Batman - All Media Types, DCU
04 Sep 2025
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Sometimes your greatest foe is yourself. When Clark admits his deepest fears to Bruce, Batman decides to train Superman.
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In the gentle rhythm of shared dinners, late-night movies, and unspoken glances, Kara Danvers and Lena Luthor build a world suspended between friendship and something far deeper. As quiet moments stretch into quiet longing, both women grapple with feelings neither of them are ready to name, feelings that live in the space between a hand resting too long, a smile held too tenderly, a goodbye that lasts just a second too long.
For Kara, loving Lena means risking everything, her secret, her identity, the friendship that grounds her. And for Lena, letting Kara in means opening doors she’s kept locked for years. So they stay silent, curled around one another in the dark, hearts full of everything they cannot say.
But time runs out. A call, a mission, a choice... A story of softness and restraint, of near-confessions and missed chances, a quiet ache for the love that bloomed in the silence, and the words left behind.
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A late night at Wayne manor assisting with some investigative work leads to Clark and Bruce ultimately deciding they want takeout. See, when it’s late at night, you’re tired, can’t do much, but still have so much to do, you tend to talk. A lot. About what? Well, wherever the direction of the wind blows, the conversation is bound to follow. And this conversation is looking a bit Southbound.
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I Slant Devoutly (Birdbrain) by bloodvvitch
Fandoms: Superman - All Media Types, Batman - All Media Types, DCU
03 Sep 2025
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Batman leaves an injured Robin in Superman's care, unaware that it would trigger Clark’s parental instincts.
Or, what if Kryptonians courted like birds?
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Tie Me Down by Red_Clegane
Fandoms: DC Extended Universe, Superman - All Media Types, Superman (Movie 2025), Batman - All Media Types, Batman (Comics)
03 Sep 2025
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After Clark had a panic attack while restrained with kryptonite-laced ropes, Bruce offer to help him learn how to untie knots.
Bruce's teaching methods are... unconventional.
Clark is pining. Bruce is pining. Tim is confused. Dick is amused. Damian just wishes everyone would focus on the mission.