Author's Note: This chapter contains dark themes. There will be graphic descriptions of violence ahead, as this chapter will begin with one of Marvin's memories. Those who came from Reaper's story should remember this one– for those who don't, I'll give more context at the end of the chapter.

Enjoy the chapter!

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Marvin's breath was heavy as he leaned against the wall, sweat dripping down his face.

The dark-skinned woman lay prone on the other side of the room, hands bloody from tearing out her throat.

He stared at the body, feeling unbridled hatred.

She had genuinely tried to rape him– to invade him in the most abhorrent way Marvin knew of.

Rage bubbled in his chest, and he subconsciously bared his fangs as blood rushed through his ears.

His Factor was wild, crushing the room's bright lights and loudspeakers like a raging animal. His fingers burned with the power he'd released just a moment ago, but it felt good.

Marvin grinned, panting, and his hands trembling. It was euphoria, a feeling of high and bloodlust he'd never felt before.

Blood. He wanted blood… No- he needed blood.

Marvin walked over and grabbed the woman's dead body by the ankle before turning to the door.

A loud slam sounded as he smacked the body against the door with enough force to crush the skull.

A piece of the skull flew off and landed at his feet with a thunk.

He paused at seeing the mutilated head and his lips, dry from weeks without water outside of waterboarding, tore as he grinned wider.

Marvin laughed as he smashed the body against the door again, denting it somewhat.

Alarms blared as he beat the body against the door, slowly tearing both the body and the door down.

Marvin paused after a while and stared at the body, or rather, what was left of it.

Blood splattered the ceiling and walls, and all that was left was a leg, torn and bloody.

The door was heavily dented and sagging, and Marvin grinned as he kicked it down.

Gunfire lit up the hallway as Marvin stepped out, but the bullets simply bounced off as his Factor swirled around him.

Marvin raised the mutilated leg in his hand and chuckled.

His head snapped over to the guards firing at him, and they froze as Marvin let out a roaring laugh.

Screams and manic laughter replaced the sound of gunfire as Marvin tore the guards apart like a savage beast using the leg.

Pleas for help cut off as Marvin crushed the last guard's skull with his foot like one would crush a cockroach.

Marvin ran through the facility, killing the guards there with joyous vengeance, his grin wide.

He stopped as he entered a hallway, only to be met with the barrel of a tank gun.

Marvin covered his face as the tank fired, and he flew back, crashing into the wall harshly.

He screamed as he hit the base of his neck, where the new star-shaped scar was– his new Achilles heel, so to speak.

Marvin slumped down the wall and shakily raised a hand to touch his neck, bringing it back bloody.

"You…" He snarled in Spanish as he stood.

He rushed forward and tore through the tank's armor like tissue paper.

Marvin punched through the chest of the first person he saw inside, reaching through and tearing out the throat of the guy behind.

One of the other Hunters punched him in the jaw, only to break his hand instead.

Marvin grinned and grabbed the Hunter by the collar before biting down on his jaw.

He tore off the Hunter's jaw with his teeth and tore open the skull by the eyes like an orange.

The screams of pain were muffled as the last Hunter fired his gun.

Marvin turned before the bullet hit his weak spot, catching the second and third bullet casually.

The Hunter screamed as Marvin forced the still-hot bullets through the Hunter's eyes.

Marvin snarled at the incoherent screams and tore out the Hunter's tongue.

"Good night, bastard," Marvin grinned as the Hunter began choking on his blood.

He ran through the rest of the facility, blood and guts covering his body even as Marvin wiped it off in disgust.

Marvin reached the headquarters of the facility, where the leader was, and grinned as he tore through the reinforced bomb door.

A slightly old, balding man in a suit scampered away in fear as Marvin tore into the room, haplessly yelling for the guards to open fire.

Marvin concentrated his Factor between his hands, forming a ball of red-tinted translucent energy.

"DIE!"

He released the ball and the guards screamed gurgled screams as they dropped their guns and began seizing.

Marvin stepped into the room, panting and sweating, his body dripping with blood, only leaving his eyes uncovered.

His eyes were sunken, a result of the weeks of starvation and torture, making him more like a demon released from Hell than any human.

"Where…" He rasped to the quivering, pathetic man in front of him.

"I–I– I don't–"

Marvin grabbed the man by the collar and lifted him with one hand.

"WHERE?!" Marvin roared, his Factor flaring.

The smell of urine filled the air and the man paled dramatically.

"W–W–Where?" The man repeated, stammering. "W–Where i–is what?"

"The… KNIFE!" Marvin yelled, bringing the man close.

The man paled more as Marvin bared his bloody fangs. Marvin's eyes were wild and beast-like, and anyone could tell he was a moment away from tearing the man apart limb from limb.

"T–T–THE LOCKER! THE LOCKER!" The man cried, pointing behind Marvin.

Marvin turned and saw a large gray locker in the corner of the room.

He dropped the man and stalked over, ripping off the door and tossing it aside.

Inside was an ornate combat knife with a bone handle, its sheath, several other simpler knives, bandages, a thick blindfold, earplugs, and several pieces of advanced tech.

Marvin half-turned to the man, who had gotten up and was trying to escape.

"Why?" He asked, and the man froze.

"W–Why?" The man repeated, holding his shoulder where Marvin had dropped him.

Marvin turned fully. "Why is it all here? What's the trap?"

The man shook his head frantically. "Th–There's no trap. I–I promise. We couldn't figure out the tech or the knife, s–so we just stuffed it in there."

"In case I converted," Marvin snarled, flexing his fingers.

The man stared at him, trembling and pale, as Marvin raised his right hand.

"I've got you to thank for this, by the way," Marvin grinned as he turned his hand, palm up.

"W–What are you–" The man stammered as Marvin pulled his middle finger back.

Marvin concentrated his Factor between his pointer and ring finger, making it a tightly packed ball.

"If that woman hadn't tried to rape me, then I wouldn't have discovered I could do this," Marvin growled. "So I suppose in a way, I did gain something from this."

The ball of energy trembled between his fingers and Marvin flicked his middle finger, letting it go.

The man dropped with a scream of agony as Marvin's Factor slammed into him, his hands going to his head.

"NO! NO! NOOOO!" He yelled, beginning to sob and shake his head fervently. "PLEASE!"

Marvin tuned him out as he turned to the locker and took everything out.

He clicked on a watch, which was actually a tracker and communicator, and stared sadly at the screen, knowing it wouldn't ever ring again.

Marvin took the ornate hunting knife and held it tenderly in his hands, trying not to drop it from their shaking.

"Rinai…" He whispered. "I'm sorry."

He shook it off, he was still in enemy territory. He needed to get out, and now.

Marvin clipped the knife belt in the locker and stuck the knife in it, directly under his left hand to be easily grabbable.

He clipped on everything else and tied his blindfold over his eyes before stepping over the drooling body of the man who'd imprisoned him.

Marvin didn't care to find the exit, simply tearing through the walls and into the snowy wilderness.

He ran for God knew how long, pushing himself to ignore the burning in his legs and throat. He couldn't stay here, not where he could be found.

Marvin ran until he reached a cave beside a river and collapsed inside– his head swimming.

"Goddammit," He groaned, hand on his head. "On the run again. Just like fucking always."

His head panged sharply, and Marvin groaned again.

"Water… need water…" He moaned as he got up.

He pulled the blindfold up as he drank from the river with his hand, careful not to drink too fast in case it was poisoned or otherwise upset his stomach.

Marvin stopped himself from gouging himself on water. It was tempting– especially now, but if he did that then he'd be too weak later to look for food.

He washed off the blood– what was left after running through the snow for so long– taking extra care not to wet any of the electronics. Rinai wasn't here to fix them anymore.

Izuku gasped as he awoke, gulping down air like he'd been drowning.

"What… the hell…" He panted, sweating and trembling.

'You tell me,' Marvin half-mumbled as he stared at the ground.

'Was that… Were those the guys who captured you?' Izuku asked, already knowing yet asking anyway.

'Yeah… Called Hunters,' Marvin replied before snorting. 'They hunted me and my sister for as long as I can remember, which isn't much. But that woman I killed, the one in my cell, she was like the Nomu.'

Izuku's brows furrowed. 'Like the… She was made too?'

Marvin shrugged. 'In a way. That energy I released– it's called a Factor or something like that– it should've killed her instantly, but she survived a few hits from it and even a few punches before she went down.'

Marvin sighed as he leaned his head back, head pounding.

'I was fourteen there,' He whispered hoarsely. 'That was… four-ish years ago… I think. I'd be 18 now, or close to it. Can't remember when my birthday is.'

Izuku stared at him in horror. 'You– That happened to you at fourteen?! Are you ok?!'

Marvin shrugged, eyes closed. 'Good as I can be. It's been years. I'm fine.'

Izuku didn't fully believe that, but he didn't know enough to question it.

'We should get you a counselor,' He said.

'Right back at ya',' Marvin half-grinned, cracking one eye open. 'We're mutually messed up; that's life.'

He rubbed his eyes tiredly. 'You should go back to sleep. It's 3 am.'

'I don't think I can,' Izuku shivered. 'Not without remembering.'

Marvin sighed and sat up, staring at him. 'Fine then, I wanted to ask you something anyway.'

Izuku turned to him, brows furrowed. 'What is it, Marvin?'

'There's…' Marvin sighed, rubbing his eyes. 'I've been reviewing my memories, looking through the stuff I know, my skills and stuff…'

'Yeah…?' Izuku asked slowly, feeling a bit nervous.

'There's a way for me to get out of your head,' Marvin stated, staring at him.

Izuku did a double take. 'Wait, really? You can get your own body?!'

'I can leave yours,' Marvin shrugged, dodging the question.

'Wait…' Izuku stared at him nervously. 'You WOULD get your own body, right?'

Marvin sighed again. 'Not quite.'

He stood and stretched, walking over to the control panel in Izuku's mind.

'Look, I know how to shake off mind control and force voices out of my head,' Marvin stated, pulling up the relevant knowledge in Izuku's mind.

Izuku blinked as the information flooded his brain, and after a few seconds, he had all the knowledge Marvin had regarding the subject.

'And YOU can do that,' Marvin said, gesturing to the info Izuku had just gained.

'But… you only know how to DESTROY voices…' Izuku said slowly, beginning to worry. 'Not remove them without damage.'

Marvin nodded. 'Exactly. If I destroy my 'voice' in your head, it would remove me, and most likely leave you with my knowledge.'

Izuku stared at him in horror. 'But you'd DIE!' He cried. 'You can't do that!'

Marvin shrugged. 'Probably, since I don't have a body for my mind to go back to. But you'd gain my skills, any survival info I have, and my muscle memory. I'm not sure how my strength would react, but given it's a Quirk inside YOUR body, it'd probably merge with One for All and make you stronger.'

'NO!' Izuku shouted, shaking his head.

'Izuku, I–' Marvin sighed, pinching the bridge of his nose. 'Izuku, look at me. I'm a broken son of a bitch with enough trauma to run through a country's mental health system. I'm a burden to you, my memories keep you up and scare the everliving shit out of you. It's better this way.'

Izuku backed away from the console. 'NO! I'M NOT– there HAS to be another way!'

'Izuku, I swear to fucking god,' Marvin snarled, becoming angry. 'Just fucking let me do this, alright? I couldn't fucking save Rinai, I couldn't save myself either! Let me save YOU!'

"NO!" Izuku yelled aloud before freezing.

He shook his head. 'I won't let you die, Marvin. You– you've helped me so much, supported me, and helped me stand up to Ka– Bakugo. You can't die now, I won't let you.'

'God, you're so fucking stubborn,' Marvin snarled. 'You know DAMN fucking well how much I hurt you! You know I put a burden on you, and you KNOW the burden will only get worse as time goes on because of my fucking memories!'

He grabbed Izuku by the shoulders roughly. 'This'll make you BETTER, Izuku! You'll gain my skill and won't need me anymore. You'll be STRONGE–'

'AND WHAT IF I DON'T WANT TO BE BETTER?!' Izuku shouted, breaking out of his grip.

Marvin did a double take, staring at him in confusion. Why wouldn't Izuku want to be better?

'THE REASON I KEPT CLINGING TO MY OLD FRIENDSHIP WITH KACCHAN IS BECAUSE I NEEDED SOMEONE,' Izuku shouted, tears dotting his eyes. 'I LET IT GO BECAUSE YOU PROMISED! YOU PROMISED TO HELP AND BE HERE! NOT KILL YOURSELF!'

Marvin stared him in the eyes, jaw clenched. Why couldn't he understand? Why couldn't he realize it was better this way?

'I'd rather be weak and have a friend than be strong and alone,' Izuku told him hoarsely, tears leaking. 'I can always get stronger anyway. I can't replace another person, Marvin.'

Marvin sighed, pinching the bridge of his nose as he dropped his head.

'Izuku… I'm hardly a person, you know this,' Marvin replied. 'Apart from the whole disconnected mind thing, I'm a weapon, a deadly one. All but one of my skills is mostly useful in survival or combat situations, my Quirk makes me immune to weaponry and scares the shit out of people, and whenever I get attacked, I have to be restrained or I risk murdering that person.'

He rubbed his face tiredly. 'Most of my memories are combat-related. The ones that aren't are when I was a fucking child, and are all mostly centered on Rinai, nobody else. I'm a soldier, a fighter, a survivor, and a weapon. That's all I'm good for.'

Izuku stared at him in horror, unable to form a response to that.

Marvin sighed. 'I'll give you time to think about it– until I unlock another memory. Deal?'

He decided to take Izuku's horrified silence as agreement and nodded, moving Izuku's body to get ready for the day.

Izuku stared as Marvin entered the school for their training. 'Marvin, why–'

'You'll learn,' Marvin said shortly, entering the training room.

Izuku did a double take. 'Learn? Learn what?'

'That not all life is created equal,' Marvin replied, slinging off their bag.

'What?! Every life is valuable!' Izuku cried.

Marvin tsked. 'Some lives matter more than others; some people just deserve to die.'

He rolled his shoulders. 'Forget that for now, I wanted you to work on your dodging abilities. It's one of the most important parts of combat.'

With that, Marvin ruthlessly shut down the conversation, something Izuku was slightly grateful for, even though he still wanted Marvin to see the errors in his train of thought.

Izuku took over and blinked, moving his body slowly.

'Did I… grow?' Izuku questioned, staring at his arms.

'Hmm?' was Marvin's response as he moved Izuku's arm around.

'Huh, you did,' He muttered. 'Not much. You still fit in your clothes for now, but it'd be noticeable from close up.'

Izuku nodded, feeling his arms curiously. 'I have more muscle now too. You think it has to do with you?'

Marvin raised an eyebrow. 'Like my strength pouring into your body?'

'Yeah,' Izuku confirmed. 'I feel… powerful? It's like my body's lighter than normal.'

'That usually happens when you get stronger,' Marvin rolled his eyes, though internally, he was panicking.

If his natural body's strength was pouring into Izuku's body, that was just more proof that Izuku was becoming more and more like Marvin, which was the absolute LAST thing he wanted.

Marvin knew he was messed up in the head, and he knew he was what most people would call a sociopath; he fully recognized those facts.

But, in all of that, he refused to make someone else like him. Strong? Yes. Skilled? Definitely. But to have his brutality, his callousness, and his issues– he wouldn't wish that on anybody.

He needed to find a way to separate from Izuku's body, and quickly, or he risked corrupting Izuku with his issues even more than he already had.

Izuku didn't hear Marvin's inner turmoil thanks to a neat trick Marvin had discovered.

If one of them reviewed a memory, the other person would only see or hear the memory, not the thoughts of the person reviewing it.

So Marvin would simply look over a memory from a few seconds ago if he ever needed to hide his thoughts from Izuku, allowing them both to keep secrets.

Izuku, meanwhile, was getting suspicious of Marvin doing it, but given nothing had come of it yet, he decided not to bother Marvin. They still needed some time alone, even if they shared a body.

Izuku turned on the training dummy and took his stance, controlling his breath.

"Midoriya!" Aizawa called as he entered.

Izuku turned, ignoring Marvin's internal groan at the interruption.

"Come with me," Aizawa told them, gesturing them out of the training room.

"What's wrong, Sensei?" Izuku asked, turning off the training dummy.

Aizawa shook his head. "Just come with me, please. It's important."

Izuku hurriedly grabbed his bag and jogged after his teacher, wondering what could be important enough to merit the secrecy.

The two walked the halls silently, with Aizawa occasionally giving him glances but not saying anything.

As they reached Nezu's office, Marvin tensed, making Izuku stop in his tracks.

'Hostility, whatever this is about, they're angry,' Marvin muttered.

'What do we do?' Izuku asked, somewhat nervous.

'You know how to activate that thing with One for All still?' Marvin asked, getting a tentative nod. 'Keep it on standby. If things get bad, I'll take over, but still keep One for All on standby.'

"Something wrong, Midoriya?" Aizawa asked, staring at him.

Izuku shook his head. "I–It's nothing, Sensei. Just remembered something."

Aizawa studied him critically for a moment before nodding, continuing their trek to Nezu's office.

He let Izuku enter first, noticing how tense he was– as if he knew.

'You're right,' Izuku stated, looking around. 'It feels suffocating in here.'

"Ah, Mister Midoriya, please sit," Nezu smiled from a chair.

Izuku did a double take. Apart from Nezu, All Might was there in his muscle form, along with Thirteen, Midnight, and Present Mic.

Marvin snarled internally. Something about this was wrong, but he couldn't exactly tell what.

Izuku sat in an oddly stiff metal chair, shivering slightly at the coldness.

Nezu leaned forward. "Now, there's no need to worry. I just need to ask you one question."

His smile dropped completely from his face, and Izuku leaned back slightly.

The chair came alive, binding Izuku's arms and legs to it.

Aizawa activated his Quirk, staring Izuku dead in the eyes coldly.

"Where's Izuku Midoriya?" Nezu asked coldly.

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Author's Note: And that's the chapter! Now, to clear some things up.

Marvin lost Rinai at 14 when Rinai was 16, so four years ago given the timeline of the story. The memory at the start of the chapter is three and a half months after her death. He'd been fighting the Hunters for three months nonstop after her death but was eventually overwhelmed due to sheer numbers. (The Hunters still lost over 70 thousand soldiers in those months alone, though.)

Marvin was then kidnapped by the Hunters and tortured for two weeks, as the Hunters tried to find what made Marvin so strong. One of the tortures included branding him with a kill switch, which is the star-shaped scar at the base of his neck; hitting it with enough force would instantly kill him, no ifs or buts about it.

When the Hunters couldn't break him through torture, nor replicate him with genetic experimentation (his blood is toxic due to his Factor, it horrifically kills any who ingest it), they tried one last thing. Rape.

The dead woman in Marvin's cell was made specifically to survive Marvin's Factor, at least from this young and weakened Marvin, in order to rape him.

She failed because Marvin concentrated his Factor like a bullet and hit her with it, causing her to kill herself due to seeing an illusion of her worst fear torturing her.

The new move also reinvigorated Marvin, allowing him to break out since the Hunters were only capable of containing a weakened, drugged, and tortured Marvin. (Also, their tech is far above the MHA world's, at least in containment, combat, and genetic experimentation.)

Oh, and, Marvin is Hispanic for those confused about why he spoke Spanish earlier. Both he and Rinai are Hispanic, though they lived in their world's version of the US, more specifically New Jersey. This is from Reaper's fic.

In regards to the end, what will happen with the teachers and Izuku? Who knows? Well, I do, but you guys don't.

See you in the next chapter!