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solelifauna · 16 days ago

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Definitely NOT Invincible (Yandere Invincible & Reader)

(Y/n) Grayson, daughter of one of the greatest heroes, learns just how NOT invincible she is. Thrown back in time after her death, she must warn the Guardians of the Globe of the oncoming slaughter while she also battles her own monsters (both figuratively and literally). However, her father and brother begin to gain interest in her strange behavior, something (y/n) could rather do without.

(Y/n) Grayson, the youngest member of the Grayson family, born to Nolan and Debbie Grayson, with your older brother, Mark, only three years your senior. Life growing up was idyllic in many ways—you had a loving father, mother, and brother who, at least for the first few years of your life, seemed completely normal. But you always knew something was different about your family, especially about your father and brother.

From an early age, you noticed how often your father would leave at odd hours, saying he was "called into work." When Mark turned 10, he and your dad started spending more time together, and they began excluding you from their bonding sessions. You were curious, but it wasn’t until your parents finally sat you down that you learned the truth: your father was Omni-Man, a powerful alien sent to protect Earth, and your brother had just started developing powers like his.

Excited by the revelation, you had a flood of questions—what it felt like to fly, whether you'd get powers, and what space was like. Though your father answered your questions kindly, the growing divide between you and your family was undeniable. Mark, once your geeky, lovable older brother, started to change. By the time you were 12 and he was 15, that change became frightening.

As Mark's powers grew stronger, so did his sense of superiority. He began referring to others as "humans" in a dismissive tone, something that deeply unsettled you. He no longer saw himself as part of the same species, despite being half-human. While he still had moments of warmth and humor with your family, outside of the home, Mark was becoming someone else—cold, calculating, and even cruel.

He rose in popularity at school thanks to his new powers, good looks, and charisma. He became the star athlete, using his power to brutalize opponents on the field, often injuring them far beyond what was acceptable, and then charming others to get out of trouble. One day, he came home covered in blood after beating a kid so badly that the other boy was left mangled and broken. Mark’s behavior was alarming, but what terrified you most was that your father approved of it. Omni-Man encouraged Mark’s aggressive dominance, much to your mother’s distress and your growing fear.

While Mark and your father’s relationship grew stronger, you felt more and more left out. Your own 10th birthday had passed, and your powers had yet to manifest. Nolan began spending less time with you, focusing on Mark's training, leaving you chasing the bond you once had with him. Debbie tried to bridge the gap, but you couldn’t help feeling the loss of both your father’s and brother’s attention.

The real turning point came when you were 12. One day after school, you were hanging out with your friends Hallie, Connor, and Weston in the reclusive meadow near your school. It was a peaceful, secluded spot until you were suddenly attacked by a strange creature—something none of you had ever seen before. It was monstrous, something straight out of the Dungeons & Dragons games you played. You barely managed to kill it, naming it a "Demogorgon" after the game. The four of you hid the body, terrified and confused.

You didn’t know what to tell your parents, but the scratches and bruises covering you were impossible to hide. Your father didn’t have time to deal with what seemed like childish nonsense, and the local law enforcement was baffled by the sudden attacks happening in your area. The creature you killed wasn’t a one-time event; strange attacks began occurring more frequently, leaving the community on edge. Still, your father was too occupied with his work for the government, and Mark was too wrapped up in his own world to help.

As time passed, it became painfully clear that your father was growing distant. You idolized him, but without powers of your own, it seemed like you were losing him. Mark, meanwhile, reveled in his strength, and with your father’s approval, his behavior became more dangerous and reckless. He started using his powers in more violent ways, and the line between heroism and cruelty began to blur for him. You watched your once-loving family dynamic twist into something darker.

Despite this, you chased after them both, desperate to stay close to the people you loved. You begged to join their training sessions, hoping that maybe your powers would eventually show. Yet, with each passing day, you felt the weight of their growing alienation. Mark was becoming someone you barely recognized—a far cry from the nerdy older brother who used to sneak you extra cookies at night and argue about comic book trivia.

Now, you and your friends are facing a looming threat from these mysterious creatures. The attacks are increasing, and no one seems able to stop them—not your father, not Mark, and not the authorities. As the danger mounts, you realize that you and your friends are the only ones who know the truth about the creatures. You’ll have to rely on each other to survive and solve the mystery behind these attacks.

Now at 15, your life had already turned into a living nightmare, but that year? That year, everything truly fell apart. You’d made it to high school, but the past three years had felt like an eternity. Your father was still physically there, but the emotional distance between you two had grown insurmountable. When he did spend time with you, it felt more like an obligation than a genuine connection. You weren’t stupid—you could see it in his eyes. He’d written you off the moment it became clear you didn’t have powers. To him, you were just another weak human, barely worth his time.

Mark wasn’t much better. He oscillated between two extremes: sometimes he was distant, barely acknowledging your existence at home or school. Other times, you’d catch glimpses of your old brother, the one who’d stay up late with you, watching cheesy movies and tucking you in when you fell asleep. Those rare moments of warmth became your lifeline. You clung to them desperately, as if each one could push back the growing darkness in your family.

But then there was the other thing—the real problem. The Demogorgon situation. What had started as a single encounter had become a full-on invasion. No one else seemed capable of dealing with it. Not your dad, not Mark, not the heroes the world adored. So you and your friends had decided to do it yourselves.

At first, it seemed impossible to hide the cuts, bruises, and sprains from fighting the monsters. But with your mom working full time and your father and brother too wrapped up in their own twisted lives to care, no one really noticed. You didn’t blame your mom—she was drowning in her own problems, trying to keep the family together despite everything.

You were fortunate enough to meet Haymitch—a rugged, grizzled man who’d been hunting the creatures for longer than you could imagine. He tried to tell you to back off, to leave it to the adults. But of course, you didn’t listen. You and your friends had been through too much, seen too much. In your stubborn teenage way, you refused to step aside, leaving him no choice but to train you. Over time, he became something of a mentor and a father figure, filling the void that your real father had left behind.

But that year? That year, the world came crashing down.

It started with the Guardians of the Globe. They were the strongest superhero team on the planet, and they were slaughtered—every last one of them. Except for your father. At first, the news rocked the world. Omni-Man was hailed as the tragic survivor, the hero who narrowly escaped death. But you knew better. Something felt wrong about the whole thing. Your gut told you there was more to the story, but you couldn’t imagine the scope of the horror that was to come.

Soon after, the truth emerged.

Your father didn’t come to Earth to protect it—he came to conquer it. And Mark, your once-nerdy, sometimes-kind brother, had fallen right in line with him. Together, they unleashed chaos on the planet. They pillaged cities, tearing through anyone who stood in their way. Mark, now going by the name Invincible, seemed to take after your father in the worst possible ways. The sweet boy who used to protect you from bullies was now a monster, crushing anyone—heroes, civilians, soldiers—who dared oppose him.

The world was plunged into ruin.

You and your friends ran, barely escaping the destruction. You thought maybe your father would have taken you, but no. You weren’t a Viltrumite. You weren’t powerful. You were just… nothing to him. Weak. Disposable. He had already whisked your mom away to a “safe location”—where, you didn’t know—but you were left behind. Haymitch stayed with you, leading your ragtag group as you all tried to survive in a world turned upside down.

You’d never felt so betrayed, so alone.

But even in the wreckage of your life, there was a flicker of hope. You had your friends, and you had Haymitch. And most importantly, you had a burning desire to stop your father and brother. Even if you didn’t have their powers, even if you didn’t have Viltrumite strength, you had something they didn’t—humanity.

And you were going to fight back.

Months passed, and the world’s governments were in tatters. Omni-Man and Invincible’s conquest was nearly complete. Entire cities lay in ruins, and any resistance from the human military or remaining superheroes was swiftly crushed. Yet, even amid the chaos, pockets of resistance formed. Small groups of survivors, including former heroes, started to organize, desperate to reclaim their planet.

You and your friends became part of that underground movement, thanks to Haymitch’s connections. He was no stranger to fighting overwhelming odds, and with his help, you quickly became proficient in guerrilla tactics. You might not have powers, but you had your wits, and you knew how to strike fast and hard, using the terrain and the enemy’s overconfidence against them.

Every day was a struggle, a fight for survival. You missed your mom, wondering if she was safe or if she even knew what was happening. As for your father… well, you weren’t sure what you felt anymore. Love? Hatred? Betrayal? It was all tangled up in a knot too painful to untangle.

And Mark. God, what had happened to him? Was he too far gone, or was there still a part of him that remembered what it meant to be human? The Mark you once knew wouldn’t have done this. But now, the lines were blurred. You didn’t know if he could be saved, or if he was beyond redemption.

The day started out like any other grim scavenging run. You, Hallie, Connor, Weston, and Haymitch had been searching for rations—anything to keep your group alive. The world had become a brutal place, where food and supplies were scarce, and desperation drove people to violence. It was only a matter of time before you crossed paths with another group, and when you did, tension rose immediately.

The air was thick with the potential for bloodshed. Hands hovered near weapons, and the slightest wrong move could trigger a firefight. But as the seconds ticked by, you realized that these weren’t just scavengers—they were survivors, just like you. What’s more, they were part of something bigger. The remnants of humanity’s greatest defenders had gathered in secret, forming a larger resistance led by the surviving heroes who had managed to evade the massacre Omni-Man and Invincible left in their wake.

After a tense exchange, they extended an offer: come with them. They said kids shouldn’t be out here, fighting for their lives like this. It took your group time to weigh the options, but the decision was unanimous—you’d all go. You’d join the resistance and help however you could.

Those weeks spent with the resistance were the best you’d had since the world fell apart. There was food, shelter, and—most importantly—hope. You trained alongside the heroes, working with them to organize missions, raid supply caches, and defend what little remained of civilization. For a while, you dared to believe that maybe, just maybe, you’d have a chance to fight back against the Viltrumite tyrants.

But in the back of your mind, you dreaded the inevitable. Every night, the fear gnawed at you—Omni-Man and Invincible would find this place. They always did. And when they did, there would be no mercy. No escape.

That day came sooner than you expected.

You were talking with another resistance member when the alarms blared. Panic rippled through the compound as the distant sound of gunfire echoed closer and closer. Then, the ground shook beneath your feet as the roof was torn open with monstrous strength. Invincible descended into the fray, a twisted grin plastered on his blood-splattered face. Omni-Man followed, cold and detached as ever, watching the carnage unfold like it was just another day.

The heroes fought valiantly, but one by one, they fell. Invincible tore through them with savage glee, while Omni-Man dealt crushing blows with deadly precision. It was a massacre.

You were frozen in place, too terrified to move, when you heard a booming voice cut through the chaos—your father’s voice. "To the rest of you," he called out over the battle, "you will die today. There’s no point in fighting." His words sent a chill through your bones.

Everything happened so fast. You tried to run, but before you could escape, a powerful hand grabbed the back of your shirt and lifted you effortlessly into the air. The breath was knocked out of your lungs as you were spun around to face the monster holding you.

It was your father. Omni-Man.

Your mind reeled as you looked at his face, stained with blood—an expression of cold indifference as he gazed down at you. You wanted to scream, to beg, to ask him why, but the words wouldn’t come. All you could do was stare at the man who once cradled you in his arms, who used to play tea party with you, who had been your hero.

But now? Now, he barely recognized you as his daughter.

You struggled, kicking and thrashing, but it was useless. His grip was iron. His gaze pierced through you like you were nothing. Then he spoke, his voice calm and emotionless.

"It really is a shame you turned out like this. So weak."

The words hit you harder than any physical blow could. Tears welled up in your eyes as you looked into his face, searching for any sign of the man you once loved. But there was nothing.

He tilted his head slightly, almost as if considering his next move. Then, his large hand enveloped your head, cradling it—just like he used to when you were little—before he squeezed.

The pain was blinding. It was as if your skull had exploded under the pressure. You couldn’t scream, couldn’t think. Everything went dark.

You were dead.

Your father killed you.

You didn’t even get to graduate high school. You didn’t get to have your first crush. You were dead.

But then, you started to feel.

You were supposed to be dead. The pain should have been gone. Darkness should have consumed you. But you could feel again.

You violently jerked awake, gasping for air, your heart pounding in your chest like it was about to burst. Your mind scrambled to make sense of what was happening.

You should be dead. Your father crushed your skull.

Your hands frantically touched your face, your head, everything. You were whole. You were alive.

Your heart raced, your breathing ragged as you clutched your chest, desperately trying to calm the frantic beating. You forced yourself to focus, but only one thought kept swirling around in your mind:

‘How the fuck am I still alive?’

Last you remembered, your fathe—Omni-Man—was crushing your skull in, revealing just how much of a useless, weak, waste of Viltrumite DNA he thought you were. Then... nothing.

That’s when you noticed your surroundings.

Wait– this wasn’t the battlefield or a bunker. This was your bedroom. The walls were familiar, decorated with posters of bands you loved when things were still normal. The faded rug beneath your feet had that same worn-out spot where you always paced while talking on the phone with your friends.

But this wasn’t possible. You watched your house get destroyed when Invincible and Omni-Man tore through your neighborhood. You watched it crumble along with everything else. You scrambled to your feet, heart racing again as your mind tried to make sense of it all. That’s when you stopped dead in front of your mirror.

Your reflection stared back at you, wide-eyed and pale, but something was off. Way off. Your scars. The ones you had earned during your time in the resistance, the ones that covered your face, arms, and body from fighting to survive—they were gone. Not all of them—no, the scars from your battles with the Demogorgons were still there, thin lines across your skin like faint echoes of the hell you’d been through. But the deeper, newer scars from the resistance, from facing Omni-Man and Invincible’s destruction? They were gone.

Your breath caught in your throat as your mind raced to make sense of this.

Wait a minute.

Something clicked, a horrifying realization dawning on you. You spun around, desperately searching for your phone. After a frantic few seconds of tearing through your sheets, you finally found it, buried under your blanket. Hands shaking, you powered it on, staring intently at the screen as the date loaded.

October 13th, 20XX.

Four months before the Guardians of the Globe were slaughtered. Five months before the world would fall to ruin.

“Fuck,” you breathed out, the word escaping in a half-choked whisper.

Your bitch ass time traveled.

#neglected reader #platonic yandere #yandere invincible #yandere omniman #yandere mark grayson #yandere nolan grayson #debbie grayson #mark grayson #nolan grayson #omni man #invincible x reader #invincible

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