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维特鲁姆最严厉的母亲 by ThingInTheCup
Fandoms: Invincible (Cartoon 2021), Invincible (Image Comics)
29 Jan 2026
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马克·格雷森如果是唯一一个Omega想要得到维特鲁姆的统治权的话，只有打上维特鲁姆星球这条路了。
马克史诗级加强！！
他真的能打上去！
哦对了，所有标注番外的内容都有相当罪恶的内容！
不想看请注意规避！ -
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Under the blight of the baleful half-moon, this fleeting breath would mark his soul till the last sea drank dry.
Alpha, his heart purred, though his instincts screamed human.
Cheek turned in longing to adamant hand, sure as law and twice as warm. Bent on his knees, eyes summoned skyward — mind sinking like lead into blue, blue, blue.
Or: Mark learns about his unique Viltrumite biology. Takes place at the start of S2. A/B/O.
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马克很软弱，他总是带有着那属于人类可笑的道德感和正义感。
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Filthy, Disgusting, and Ugly, I’m Sure by mrmillipede
Fandoms: Invincible (Cartoon 2021)
13 Jan 2026
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Conquest arrives after the Invincible War, and he’s not here to play around. When his fight with Mark turns heated, he realises he’s fighting a rare Omega Viltrumite, and he’s taken interest.
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Holy shit, I'm raising a conqueror... by DeviantWriter
Fandoms: Invincible (Cartoon 2021), Invincible (Image Comics)
22 Nov 2025
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After his fight with Omni-Man, Mark vanished...only after one strange night with William. Months later he’s back, cradling a baby with William’s eyes and wearing a smile that doesn’t feel quite right. Something about him has changed, and whatever it is, it’s dangerous.
(1.21.26 editing in progress)
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**Editing in Progress**
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"Is this your first heat?" He asked curiously, Mark nodded soon after. "... It's a bit late, but I think I can handle it."
Will stared at Mark, tilting his head. “You’re not scared?”
Mark hummed. “Not with you.”
Or
Mark's horny for weeks, William has to keep up with him.
Note : Chapters with (*) in the title means that there are more explicit stuff in it
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Building a new scent by kimcavoy
Fandoms: Invincible (Cartoon 2021), Invincible (Image Comics)
15 Jul 2025
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Mark is 17. He was causing trouble, Cecil fears this is not entirely unusual, but when a teenager retreats into his hospital room and whines or growls at anyone who tries to get him out, then the alpha in charge must take action. Mark needed an authority figure to make him feel some protection. He needed an alpha. God help and forgive Cecil, but he believed Mark needed him.
Mark is 19. His cheeks are flushed. Cecil hands him the pillows, obeying the kid's wish, saying nothing. Mark doesn't want to talk. He wants comfort. He smells like a new, fresh fruit, something that comes from beyond the planet, stardust. A young omega seeking comfort from the worst alpha he could have chosen.
Mark is 21. He with all his strength, with all the times he tried to impose himself on Cecil, fails at the simple task of mustering the courage to beg for what he wanted. He looks imploringly at Cecil, begging him for anything that'll calm the chaos in his head. Cecil smells like the kind of alpha Mark needs, and he throws his head back, ready to be marked.
Or: Three nests. Three canon divergences. Three times where Cecil and Mark build a nest trying to find an answer to the emotion that arises in between.
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After the Guardians of the Globe were murdered by an unknown assailant, Mark Grayson thought his entry to superheroing would be simple— fill in the gaps. Only the 'needs' you can fill are different if you're a pup, or an omega (by choice if not design), and he's got way too much ground to cover in figuring out exactly what his role would be.
He hopes it'll be with Rex, the cocky alpha who flirts like crazy and doesn't seem to mind Mark's brand of omega.
When the GDA doesn't know what to do with you, it's up to you to figure out your place, right?
Or,
Viltrumites are violent.Omegas are sweet.
What if Mark's both?
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Mark loses his fight against his father, after his mother and friends are threatened. He's to be brought to meet the remaining Viltrumites, because given his unique biology, his existence is imperative to the empire. As a male omega, something that hasn't existed in the Viltrum empire for thousands of years, he'll be expected to be mated and to have pure blooded healthy Viltrum children.
Mark doesn't know who Conquest is, or why even his father seems disturbed by the news of who his mate to be is.
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His son's words left Nolan Grayson unable to kill him and what he loved, failing in his mission to unite Earth with the Empire. His failure brought consequences, and now Nolan finds himself with a teenage son turned child, flying through the multiverses, and fleeing from the Empire he was once a part of. At least the universe he ended up in has its own heroes, who will have to face the Empire if they don't want to also disappear.
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- Part 6 of P R O M P T S
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How do you change a Viltrumite? And what happens when you do?
Mark gets his wish-- but then he realizes 'alpha' isn't all it's cracked up to be, and he decides to be an omega instead. Relationships fail, friends are lost, but his dad will always be there. Right?
At last, Mark had presented. And still, his wife was not pleased. Nolan bristled. "You're worried because our boy smells like blood?" Nolan rolled his eyes. "He's a Viltrumite. That's going to be half of his scent no matter what."
Debbie frowned. "He's supposed to heal faster."
"I don't really see what the problem is." Nolan sighed. "First you're worried because he smells like a nursing child, and now you're worried because what. He smells like a battlefield?"
[Don't forget to check the tags. Don't like don't read.]
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COMIC SPOILERS!
An explicit collection of all the ficlets I’ve accumulated while enjoying this series… and actually finished.
The majority of entries are whump/angst, so be warned. Just about all of them involve Thragg and Mark, since I’m always a sucker for villains liking their heroes a little too much lol
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Blood is thicker than by ayo_wiwi
Fandoms: Invincible (Cartoon 2021), Invincible (Image Comics)
23 Apr 2025
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There is more to being a Viltrumite than just getting incredible superpowers, as Mark finds out.
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Conquered by ilymarkgrayson
Fandoms: Invincible (Cartoon 2021), Invincible (Image Comics)
18 Apr 2025
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Mark Grayson is a rare, unclaimed omega among the Viltrumites, and he’s dangerously late for his first heat. While everyone anticipated that Nolan—his own father—would claim him, Nolan has abandoned him. Now, the empire has sent someone far more dangerous.
Conquest.
A strong alpha, feared even by the high council, arrives with a singular mission: to bond the omega before he unravels entirely. Mark is furious. Defiant. Unwilling to bend to anyone’s will. But Conquest isn’t asking for Mark’s compliance—he’s taking it.Mark finds himself trapped in a world of power dynamics he never asked for, and Conquest’s dark presence is impossible to ignore. As Mark’s heat takes hold, he begins to realize that resistance might be futile—but he’s far from submissive.
And while Mark is caught in this web of dominance and control, Nolan—imprisoned and filled with bitter regret—watches from afar. He’s consumed with jealousy, unable to accept that his son has been claimed by someone else. He’s plotting a way to reclaim what he believes is his, but Mark might not be the same boy he once knew.
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“I'm pregnant,” Mark chirped.
Nolan doesn’t say anything, an impassive scowl in his was present.
That should have been worrying by itself.
“Well,” Mark says, “Aren't you going to at least say you're happy?”
“This is not good news, boy.”
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The baby continued to cry. Mark’s headache got worse, as well as the tight feeling in his chest which at this point stopped feeling like a simple emotional response to the stress and many, many bad thoughts he couldn’t really avoid. Distantly, he wondered if he didn’t really heal all that well after all. Ever since he took that beating from other viltrumites he would catch himself feeling an odd strain here. Maybe they fucked up something in there that even his healing couldn’t fix?
Whatever it was, he hoped it won’t get worse. He really couldn’t afford to come down with something while trapped on a spaceship for weeks to come and being a tiny baby’s sole caretaker.
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Or, how messed up it would be for one's body to go through the whole new kind of puberty without even knowing it's puberty all while stuck on a spaceship with a little baby, who is in a huge distress for some reason? But that's just how Mark's life is.
Or, what if there is more to viltrumites that Nolan didn't bother to share with Mark other than their imperialism?
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Mark is still perceived as a relatively normal, human man on Earth. Humans don’t have secondary genders, they have no heightened senses to pick up on pheromones or detect heats or ruts. So, Mark has spent all of his heats alone.
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Darkwing thinks he has the upper hand in finally apprehending the rogue Invincible that ravaged his headquarters and slaughtered his team. A sweet revenge, if he looked at it in another way.
The ache between Goggleless Mark’s legs from the high of battle make him want to burst. And this pitiable excuse of a man would be the perfect tool to help him.
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- Part 2 of Invincible Banging
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Instead of dying at the hands of an evil version of Mark—Rex stumbles upon a teary and absolutely heartbroken version instead.
Unfortunately for him, Mark decided that he’s the perfect tool to relieve his woes. Fortunately for him, it doesn’t require a lot of fists.
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- Part 1 of Invincible Banging
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In another world, Nolan is triumphant.
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- Part 2 of invincible abo