'You really didn't think beyond this?' Izuku asked as Marvin looked around, still floating.

'Hey, look, it was a last-second decision, ok?' Marvin replied. 'I did the equivalent of doing your homework when the teacher's collecting it. I didn't have time to plan.'

He looked down, observing the League with interest. They were high enough that anyone trying to reach him would either be able to fly or teleport since they were about eight stories in the air.

'Think we overdid it?' He asked, looking up again.

'As long as it worked,' Izuku replied. 'I really wish All Might were here, though; he probably knows this place better.'

Marvin felt a twinge at the edge of his senses. 'Well, it's your lucky fucking day.'

They turned to the right, seeing All Might rush towards the League's hideout in an excellent impression of a human bullet.

Marvin went to speak but paused. 'Stupid fucking pills,' He mumbled, wishing he'd learned ventriloquism, it'd be helpful here.

All Might stopped near the League's base, taking a deep breath.

"KAMINO PIZZA DELIVERY," He called before punching the wall in.

Marvin snorted as he watched the chaos unfold, seeing All Might punch the entire League in the same time it took to blink.

All Might paused as he saw the enormous hole in the ceiling, looking through it with interest.

"YOUNG MIDORIYA!" He exclaimed, spotting Izuku floating high in the air.

'Nana, your Quirk saved yet another person,' He thought happily before leaping through the hole.

Marvin canceled Float, letting his body fall through the air with his eyes closed, trying not to succumb to his fear.

He choked, feeling something vile crawl from his throat, pressing against his mouth forcefully.

He opened his mouth out of reflex, his eyes snapping open, and saw a black goo-like substance spill from his mouth.

'This is definitely fucking Hell,' Marvin muttered as his world went dark again.

"NO!" All Might roared as he watched Izuku disappear before his eyes, his arms reaching out just a second too late.

All Might soared up a bit higher than Marvin had been, looking around desperately for him.

The World's Greatest Hero twisted, punching the air and sending himself rocketing down.

He landed back inside the League's hideout with a booming crash, taking out more of the ceiling as he landed.

The League of Villains was gone, and All Might could only see the last of the black goo that swallowed Shigaraki.

All Might pulled his phone out; if anyone could find where Izuku went, it was ANVIL.

"Jona, we have good and bad news," He said into the phone.

"Shoot," Jona replied as more black goo began appearing in the League's wrecked base.

"Good news, I found Young Midoriya's previous location," All Might declared as Nomu began appearing.

"That's go- wait, PREVIOUS location?" Jona asked as All Might jumped back.

"That's the bad news," All Might answered, winding up a Smash.

"Young Midoriya's gone," He said before punching one of the Nomu that'd appeared.

"GONE? What do you mean gone?" Jona asked, his voice slightly muted by the sound of a Nomu turning to paste.

"He was taken," All Might explained, punching more Nomu. "Tell your teams. I'm currently occupied by Nomu."

The call ended and All Might put the device back into his Hero costume, twisting away from a Nomu's punch.

A well-placed Oklahoma Smash evaporated the Nomu along with its comrades, painting the walls dark red with their blood.

'I knew it wouldn't be this easy,' All Might thought as more Nomu appeared.

Marvin stumbled as they touched the ground, his senses flaring as he took in the change of his surroundings.

'Where are we?' Izuku asked.

'Nowhere good,' Marvin replied as his senses locked on.

"Izuku Midoriya," All for One's voice boomed as the villain floated slightly above the ground.

All for One touched down, and Izuku felt a shiver run down his spine as he stared at the villain's deformed face, if it could be called that.

"Or should I say, Duality?" All for One asked. "You're a rather interesting person. Very intriguing."

'Should we feel honored?' Marvin muttered darkly, shifting the pills to rest on his tongue.

"But your Quirk," All for One hissed.

Marvin tensed, feeling the change in the air as All for One spoke.

"It's truly a work of art," All for One continued, raising his hand.

Marvin swallowed the pills reflexively, knowing All for One was about to attack.

"And I love works of art," All for One said, activating his original Quirk.

What seemed like black lightning erupted from All for One's fingertips, rushing towards Izuku.

Izuku leaped back, pulling himself with Blackwhip to get distance.

A familiar pink ball appeared in the air, and All for One's lightning slammed into it, releasing waves of energy as it did.

Marvin screamed silently as the energy absorption activated, overpowering the Quirk-stealing ability of All for One.

He felt something inside his mind break, and memories rushed in faster than he could process, overwhelming his senses as seventeen years of sights, sounds, smells, textures, and locations invaded his mind.

Marvin screamed again as he gained feeling in his limbs, the nerves erupting in pain like millions of white-hot needles piercing his skin.

He spasmed, trying to stay conscious during the pain. The Hunters had put him through thirteen kinds of torture in two weeks; he was used to pain.

But this was different; it was the feeling of getting birthed thousands of times instantly. Something he could say confidently since he could remember his birth now.

'I did NOT sign up for this in the Hell getaway card,' Marvin hissed, trying to block out the pain without the adrenaline to do it for him.

He remembered he was still connected to Izuku and tried to push energy to him, hoping it could offset the exhaustion.

The pain increased tenfold, something Marvin didn't even think was possible before his screams became auditory as his vocal cords formed.

All for One stared in shock, trying to pull back his Quirk from the massively expanding ball of light that was blinding his infrared Quirk.

The ball condensed in an instant before imploding, ripping through the air like a tidal wave.

The energy hit All for One seconds before he heard the sound, slamming into his body like a freight train.

A deafening boom sounded alongside another wave of energy that knocked out every piece of equipment for several blocks, along with absorbing their energy.

—-

The wave of energy expanded rapdily, washing over the street like a flood and canceling all of the energy in it as it passed.

The truck Bakugo stole was one of them, coming to a screeching halt as the wave of energy passed over it.

Bakugo twisted the wheel, barely keeping the truck from smashing face-first into a building.

"What in the hell was that?" He yelled, trying and failing to start the truck.

"It's dead," Bakugo scowled, letting go of the key.

"So what do we do?" Iida asked as Bakugo crossed his arms.

"Screw it," Bakugo said, opening the door. "I'm walking there."

"Bakugo, are you sure?" Iida asked even as he got out of the truck with him.

Bakugo sucked his teeth. "Damn thing is dead, and we don't have all night to save the nerd."

He continued walking, with Iida rushing to the back of the truck to get Tsu and Uraraka.

Iida opened the door, seeing Uraraka kneeled against the corner, her body facing the wall and her head down. Tsu was behind her, holding Uraraka's hair back.

"Hey, Iida," Tsu said. "Why did we stop?"

Iida paused. "Is Uraraka ok?" He asked slowly.

"She's nauseous," Tsu replied. "It's not rainbows this time, kero."

"Uhh, well, ok then," Iida said, somewhat uncomfortable by Tsu's bluntness.

He shook it off. "The truck won't start. We're walking the rest of the way to save Midoriya."

Uraraka groaned loudly. "Oh, thank god," She muttered before throwing up again.

"Are you sure she's alright?" Iida asked, heavily concerned.

Uraraka nodded as she took gulps of air. "Yeah," She groaned, wiping her mouth. "I'm fine."

She stood shakily, Tsu helping her up and letting Uraraka lean on her as they got out the truck.

"Never letting Bakugo drive again," Uraraka groaned once they were out.

She took a deep breath, fanning her face to try and get over the nausea.

"Are you sure you're alright, Uraraka?" Iida asked, his face showing concern.

Uraraka nodded. "Yeah, yeah. Just don't like Bakugo's driving," She told him, managing to stand straight.

"Well are you going to keep standing there or not?" Bakugo barked, standing near the front of the truck.

"I thought you left," Iida said, confused.

Bakugo sucked his teeth as he turned his back to them. "You're slightly useful, and the nerd likes you more."

—-

"FUCKING HELL," Hebi yelled as alarms blared inside the airship.

"What's going on?" Momo asked, unsure if what was happening was normal or not.

"Something just wiped out every electronic in the next five blocks," Hebi replied as the aircraft jerked mid-air.

The pilot tried to pull up, but the ship was basically scrap now, with none of the systems coming online; not even most of the emergency systems.

They landed, or to put it better, crashed roughly near the bar where All Might's call had come from.

The airship slided across the ground with a horrid screeching sound, smashing into the haf-destroyed bar and taking out another wall.

The entirety of Rescue Team One was breathing heavily, sharing looks as the airship came to a rough, jerking stop.

"All Might said Midoriya's last location was here," Hebi said, taking control of the situation as best she could. "Maybe he knows something."

Hebi pressed the button that would typically open the ramp, only getting a flashing red light telling her the system was still down.

She sighed and walked over to the ramp, using the emergency lever and trying to open the door with brute force.

"Little help here, Panzer?" She asked, trying to push it open with her body.

Panzer stood, walking over and grinned.

He slammed his shoulder into the door, causing a reverberating boom to echo through the ship.

The door groaned open a little, leaving a gap wide enough to put a person's head through.

Panzer took a step back and steadied himself.

He charged forward with a yell, slamming into the door again.

The door swung down, being completely forced open by Panzer's momentum.

It crashed onto the outside, accidentally crushing a Nomu's leg underneath it.

"You've got to be kidding me," Hebi muttered as the Nomu detached its leg, crawling around on three limbs before it regenerated.

Some distance away, Rescue could see All Might slam another Nomu into the ground, crushing its body with his fist.

Another Nomu jumped on All Might's back, trying to hit the Hero's head like an angry child.

All Might threw his arm out and tossed the Nomu away like one would an insect.

The Nomu flew at Rescue's airship with a loud screech, its limbs flailing.

Momo jumped in shock as she saw the Nomu fly towards her.

Her Quirk activated out of instinct, and the barrel of a cannon jutted from her arm.

A cannonball shot out with an explosive boom, hitting the Nomu in the head.

The head essentially atomized, being turned a fine paste.

The Nomu's body crashed into the back wall and hit the floor, but its regeneration didn't kick in.

"Nice shot," 30 said, looking at the headless Nomu.

Momo nodded mutely. "U- uhuh. Yeah."

'How did I make that so fast?' She asked herself, breathing heavily as the cannon receeded into her arm.

—-

All for One was breathing heavily, his right hand heavily burned from the backlash, and even though the moderate healing Quirk he'd stolen activated a second after, it was still an injury.

"You know," Marvin growled, pushing rubble off himself as he stood. "I could've gotten a fucking safe word, you jackass."

Marvin stood, taking a deep breath as he cracked his neck.

Izuku stared with wide eyes. He'd been exposed to Marvin's Factor countless times, but this was something different.

'I get why he was called a monster now,' He thought as he stared.

'Ouch,' Marvin replied before pausing. 'Did I just hear your fucking thoughts?'

Izuku blinked. 'Uh, yes? Wait, how?'

'No clue,' Marvin shrugged. 'Just don't tell Momo, she'd get jealous.'

"Oi, asshole," Marvin called, stalking over to All for One. "Thanks for the energy. I needed that."

He tightened the dark cloak around his body, smiling under his hood as he felt his armor move with his body.

Marvin passed a hand over his thigh and smiled more. 'Olde Reliable,' He muttered as he grabbed the combat knife that'd originally been Rinai's.

'Knives? Check. Armor? Check. Clothes bag? Check. Cloak? Intact. Crippling depression? Still there.'

"And who are you?" All for One asked, able to feel Marvin's presence even if he didn't use his infrared; it was like a beacon, impossible to ignore.

Marvin grinned as he lowered his hood. "I'm Death's Lover."

His Factor slammed into All for One with more than enough force to kill, actually causing the villain to pause slightly as multiple Quirks worked to keep him alive.

"Impressive," All for One said, shrugging it off with only some difficulty. "Perhaps you shall live."

Marvin leaped away from All for One's attack, which shredded through stone like paper.

'Knew it wouldn't be that easy,' He scowled as All for One turned to him.

"Truly impressive," All for One muttered, raising his now healed hand. "Your Quirk is useful."

Black lightning shot out again, but Marvin didn't bother to move, instead focusing on absorbing the energy.

"You already did this once, asshole," He yelled as the lightning hit his chest. "What makes you think it'll work a second time?"

"Yes, it is rather unfortunate," All for One said, seemingly undisturbed at his inability to steal Marvin's Quirk.

He canceled the Quirk and activated Rivet Stab, causing his fingertips to turn black.

'Midoriya, you get out of here, or I throw you out of here,' Marvin scowled.

He leaped back and slammed his hand on Izuku's chest.

Marvin took a deep breath and thought about what he did earlier, thinking about pushing power out of his hand.

Energy roared from his palm, shredding the cloth of Izuku's shirt around his hand before bleeding into Izuku's skin and disappearing.

Izuku flew back from the transfer, tumbling through the air like a paper caught in the wind.

He landed near the wall of the facility and stood quickly, dusting himself off.

He felt like he could fight ten Musculars at once, power flowing through him in waves.

Back on the field, Marvin dodged another attack from All for One, flipping away from Rivet Stab.

Marvin leaped to the side, throwing a dagger fast enough to stab All for One's shoulder.

"You are impressive," All for One said, pulling the knife out calmly.

"Please, don't call me that," Marvin groaned. "Brings back memories of a woman I'd rather not remember."

"Before you die," All for One continued, ignoring his outburst. "I believe it is only fair to introduce ourselves."

All for One gave an overdramatic half-bow. "I am All for One, but you may call me the Demon Lord. And you are?"

Marvin grinned, removing his blindfold slowly and taking a deep breath.

"Me? I'm a god," He said, opening his eyes and letting his Factor loose.

All for One's head exploded in pain as his infrared was overloaded, Marvin's eyes appearing like small stars.

Marvin exploded forward, taking advantage of the distraction.

All for One reacted at the last second, matching his punch with an enhanced Air Cannon.

Marvin flew back, crashing into the rubble with a boom.

He hissed in pain, his ears overloading a bit from the sound.

"I'm not just going to dance on your grave," Marvin growled as he rushed All for One again. "I'm going to build a fucking disco on it."

All for One matched his punch again, but Marvin's fist made it close to All for One the second time before he was blown back.

Marvin skidded to a stop, growling in annoyance.

'He doesn't adapt as fast, stationary,' He thought as he rushed forward again. 'Useful.'

All for One activated Air Cannon again, but Marvin twisted at the last second, landing a kick on All for One's side.

Marvin tumbled back from another blast of air but was grinning like a maniac, baring his fangs.

All for One paused as Marvin's fangs appeared on his infrared, brighter than the rest of his body but dimmer than his eyes.

Marvin leaped again but twisted, going low and kicking All for One's leg instead.

He leaped back from Rivet Stab, but the Quirk managed to cut his arm before he fully moved.

'He's learning,' Marvin thought, dodging another attack. 'He's the worst for a reason.'

Marvin took a deep breath and condensed his Factor with a hiss of pain.

He shot off, bypassing Rivet Stab and punching All for One in the liver.

Marvin blocked the villain's arm with his, his feet digging into the ground from the force.

All for One hit him with Air Cannon again, sending him flying.

Marvin twisted mid-air, managing to plant his feet and skidding to a stop only a few feet away.

"You have the mind of a dying beast," All for One observed. "There's no preservation or doubt in your movements."

"Good, you noticed," Marvin replied. "Then you know I don't mind digging my grave beside yours."

"Why fight for them?" All for One asked, gesturing around him. "When you could be so much more without the restrictions that being a Hero would put on you."

Marvin laughed maniacally. "Oh, please. You really think I fight for them? I'm not a Hero, fucker."

"Then why fight me?" All for One asked. "Are we not on the same side against them?"

"Never said I was a villain, idiot," Marvin scoffed. "I fight for myself and those I care about, not for some bullshit excuse like justice or whatever reason they use for the press. I'm a survivor, that's it."

"Ah, a survivor?" All for One asked. "I can see that. Then why not be able to survive better than anyone can? To be ever healing, ever living, without any restrictions on who you could fight?"

Marvin gave him a bored look. "You sound like a car salesman."

All for One ignored the outburst. "I can turn you into something greater. You have so much potential waiting to be tapped into; I can help you. My experiments have led me to the pinnacle of Quirk evolution."

"You mean the Nomu?" Marvin asked in disbelief. "Those ugly fucks? That's 'the pinnacle of Quirk evolution?' If that's the pinnacle, then no fucking thank you. I like my brain inside my head, and I kind of like wearing shirts."

"Such a shame," All for One said, raising his hand. "You have great potential; it is a shame to see it wasted. No matter, you said you were a survivor, correct? Then this is your death."

Rivet Stab lashed out dozens of times faster than before, almost untrackable as it moved.

Marvin rolled his eyes, seemingly disappearing right as Rivet Stab hit his location.

"How many times do I have to tell you stupid fucks?" Marvin asked, appearing before All for One, fist drawn.

All for One matched his strike, but Marvin's fist pushed through Air Cannon, ignoring the force.

The villain increased its strength tenfold, sending Marvin flying back.

"You said you were a lord," Marvin's voice sounded from All for One's right.

'Add teleportation to the list of fuckery,' He thought as he rushed All for One.

"But I'm your god," He boomed, throwing a punch at All for One's head.

All for One leaned back, drawing his arm back and activating multiple Quirks at once.

He matched Marvin's punch, the resulting energy exploding violently around them and turning stone to dust.

Marvin fell back, flipping to stop his momentum and landing in a crouch.

'Knew that would happen,' He muttered as he stared at his dislocated left shoulder.

Marvin shoved the joint back in place with only a slight grunt, rolling it around to get feeling back.

"Your abilities are notable," All for One said, his right arm swollen to several times its normal size.

"Unfortunately, that will not save you," He continued, flexing his massive arm.

Marvin groaned as he stood. "What is it with you villains and compensating? Surgery exists, you know. Or just like, don't be so obvious. It's annoying."

"Are you certain you do not wish to join us?" All for One asked, ever so slightly impressed with the teen in front of him.

The attack he just used should've turned this 'god' into a fine paste, yet he was still standing, making jokes as if it were just an annoyance.

Marvin pinched the bridge of his nose and sighed. "OK, fine. I'll bite. What in the actual fuck do you think would want to make me join your merry band of daddy issues?"

"I can give you power beyond your dreams," All for One declared.

"Newsflash, asshole, I'm already stronger than everyone in your group combined," Marvin replied. "I can eat them for breakfast and still be hungry."

"Ah, so it was you?" All for One said. "Tomura mentioned someone beating them. I didn't believe him at first, because no one could possibly be that powerful."

Marvin swore internally. 'I REALLY have to stop speaking so soon.'

"And then, I thought it was Izuku Midoriya," All for One continued his monologue. "He's the successor to the World's Greatest Hero, after all; why wouldn't it be him?"

'Great, he knows about the Quirk shit, too,' Marvin sighed.

"But now," All for One laughed maniacally. "NOW I see. You're the one Tomura spoke of, with eyes of death and fear following his every move. Yes, you can be great if you accept my offer."

"You still haven't given me a reason to join you," Marvin said deadpanned. "Like, can we just hurry this up? I'm starving. The last time this body ate was like six months ago."

Was it technically correct? Yes. He hadn't eaten either time he'd been released and had been stuck in Izuku's body for around five or so months, so he wasn't technically lying.

All for One paused, his lie-detecting Quirk marking Marvin's words as a true statement, and his interest grew. The ability to go months without substance would improve effectiveness drastically; perhaps it had to do with his ability to absorb energy?

"I can offer you anything you wish," All for One said. "If it's money you need, the League can provide. Name your price?"

Marvin rolled his eyes again. 'You know what? Time to take this shitshow to the highway, cause what the hell?'

"Unless you can revive the dead, good fucking luck," He said. "Because she's the only thing you could use."

'Marvin?! You can't join him!' Izuku exclaimed for where he was fighting the League.

'I won't, keep your fucking panties unknotted,' Marvin rolled his eyes. 'No one can revive the dead; trust me, I tried.'

"We can do anything with our experiments," All for One said, thinking Marvin was talking about a romantic partner. "We can make her better than before."

Marvin snorted despite himself. "Oh, please. I'd like to see you try."

"Oh, we can do much more than try," All for One replied. "We can. She's incomplete at the moment, but if you join, I can make her a hundred times better than what you had."

Marvin stiffened. Incomplete? His Factor flared angrily, barely keeping himself in check while feeling an intense desire to rip off what little face All for One had left.

"Some parts are missing," All for One continued, seemingly oblivious to Marvin's anger. "But we can easily make her as young as you wish."

Marvin's vision began to go red; his teeth bared in an open-mouth snarl.

"What do you say?" All for One asked, his arms spread. "Perfectly obedient to your every word. Every word."

"Shut the FUCK UP," Marvin roared loud enough for people to hear from a few blocks away.

"WHO IN THE FUCK DO YOU THINK YOU ARE TO BE PLAYING GOD AND EXPERIMENTING ON HUMAN FUCKING BEINGS?!" He boomed, fists balled as he yelled.

All for One gave a grotesque imitation of a chuckle. "That's the thing. I am God."

The world lost its color for Marvin, sounds dying so completely that he couldn't hear his own heartbeat.

'Kings Death: 30%.'

Adrenaline roared through his body, his muscles seemingly swelling as his eyes became slightly sunken.

He burst forward fast enough to break the sound barrier with ease, drawing back his fist.

All for One charged up an attack stronger than any before, able to sense the change in Marvin from miles away.

Their punches met, creating powerful gusts of wind.

Marvin drew his arm back again, pushing himself and throwing another punch.

What seemed like dozens of fists exploded from his arm, his movements so fast that it left dozens of afterimages.

All for One moved his massive arm, blocking the barrage of strikes with it.

Marvin was punching with both arms, moving fast enough that his punches sounded like someone firing a minigun.

"Enough," All for One barked, his body blurring as he grabbed Marvin by the throat.

"You die here," He said, holding Marvin up in a tight grip.

"Sure about that, asshole?" Marvin asked, trying to pull energy from him with the direct contact.

All for One's arm jerked as Marvin's strengthened energy absorption began pulling on the Quirks enhancing it.

Marvin's strength grew quickly, absorbing the energy of various Quirks with ease.

All for One threw him away harshly, sending Marvin rocketing into a pile of rubble.

Marvin stood slowly, his arms broken and shaking from using King's Death.

That was the problem with it, it was something to be used only when ready to die since its aftereffects would break his body.

Marvin blinked as his arms began to hiss, steam rising from his skin and his bones cracking loudly.

His bones healed themselves with a loud snap, and Marvin bit his tongue from the pain.

'Good to know. Can't die if I have the energy,' He thought, sensing a chunk of the energy he absorbed disappearing as his arms finished healing.

"What are you?" All for One hissed.

There were swirls of energy around Marvin's body, rising in a column like a slow tornado. The energy appeared brightly to All for One's infrared, glowing a bright orange.

"Fine, you want to know who I am?" Marvin snapped, rolling his shoulders.

"I'm-"

A deafening boom sounded from behind him, and in the blink of an eye, All Might crashed between him and All for One.

"All for One," All Might hissed, his face devoid of his signature smile. "You've gotten a lot uglier since our last fight."

"Ah, the Symbol of Peace," All for One replied. "How good of you to join us for a funeral. I can schedule yours with it, too."

'This is going to be a lot of talking,' Marvin grumbled as he walked forward.

"Yo, All for One!" He called, standing next to All Might. "I've made my choice."

"Good," All for One replied, a smile in his voice. "So you'll join us?"

"It's pretty clear that you're strong," Marvin replied, his arms hidden by his cloak. "Far stronger than a lot of Heroes, I'll admit."

"Young Mikrai, what are you doing?" All Might hissed softly. He couldn't be thinking of joining All for One, could he?

All for One seemed ignorant to All Might's distress, or perhaps he ignored it.

"So you see it now?" He asked, arms spread. "You see how fragile this world is? How these Heroes are nothing but obstacles in your path."

Marvin shrugged. "It's pretty clear All Might couldn't really beat you on his own."

"Young Mikrai," All Might whispered in shock, feeling hurt that someone so young would have that little faith in him.

Marvin grinned, concentrating his Factor on his eyes.

All for One paused as another blinding headache hit him, Marvin's Factor making his eyes glow even more than before.

"Thankfully," Marvin said, placing a hand on All Might's shoulder. "He isn't on his own."

All Might's eyes widened as power flowed through him, the embers of One for All turning into a blazing inferno.

He laughed loudly, feeling stronger than he had when he first met Izuku.

"Thank you, Young Mikrai," He said with his signature smile. "It is greatly appreciated."

"All Might, listen to me," Marvin hissed inside the storm of energy they were in. "You know Shigaraki? He's Nana's grandson, All for One kidnapped him as a child."

All Might froze, his smile washing off his face as he stared at Marvin in shock.

"That-" All Might's words cut off as Marvin nodded.

"It's not your fault," Marvin told him. "There's nothing you could've done to prevent it. The family was slaughtered before anyone could call for help."

All Might didn't know how to feel. His mentor's grandson… a villain? One that targeted Izuku several times?

"Why… Why tell me this?" He asked.

"Because that mask bastard's going to use it to break you," Marvin replied, jerking his head. "Or try to, at least. But what you have to know is that Tenko Shimura is dead, the only thing left is the villain Shigaraki. You can't let things of the past affect you right now."

Marvin removed his hand, having pushed all of the excess energy he had into All Might, only leaving enough to keep himself fighting.

"Kick his ass, All Might," He grinned, jumping back as the storm of energy subsided.

"You are a fool," All for One hissed. "Both of you will die tonight."

All Might rushed forward, throwing a punch that All for One barely matched in time.

'I haven't felt this good in years,' All Might thought as he threw another punch.

Marvin turned away from the fight, rushing to where Izuku was fighting the League.

Izuku was visibly running on fumes, barely managing to dodge the attacks with Blackwhip, breathing heavily as he tried to stay up.

"Get…" Marvin growled, rocketing into the group of villains.

"AWAY," He roared, kicking Magne in the head and twisting, driving her into the ground.

"Who the hell are you?" Dabi asked, his arm raised.

"Like I told Docter Doom's cousin over there," Marvin replied, gesturing to where All for One was. "I'm a god."

His Factor flared, causing the villains to freeze as Marvin grabbed Izuku and pulled him out of the way.

"You're a fucking idiot, you know that?" Marvin asked as they landed a bit away from the League.

"I couldn't just leave," Izuku replied, breathing heavily. "They'd turn on you and it'd be multiple people against one; that isn't fair."

Marvin sighed, pinching the bridge of his nose. "Whatever," He muttered as he stood. "Stay here, hopefully, someone will hear the fuckery that's going on here and help."

He rushed forward, drawing his knife as he leaped into the circle of villains.

"Anyone want to make this easy for me and kill themselves?" Marvin growled, holding his knife in a pick grip.

"Why you-" Magne yelled, having recovered from Marvin's attack and rushing him with blood on her face.

Marvin snarled. "Stay down," He growled, leaping at her and punching Magne in the head.

The League froze as Magne's head exploded, Marvin's fist passing through it like a rock through a glass.

Magne's headless body fell with a thump, collapsing at Marvin's feet in a pool of blood.

"Anyone else?" Marvin growled, looking over his shoulder at the League.

The League of Villains were frozen, staring at Magne's body in shock and horror. Heroes didn't kill, but this person had just killed Magne like she was an annoying fly.

"Damn you," Compress yelled, rushing towards him with his arm raised.

Marvin scoffed. 'Rookie.'

He twisted around Compress' arm and brought his knife down on the villain's wrist.

Compress screamed as Marvin tore his hand off, staring in horror at the stump.

Marvin switched the knife to his left hand and stabbed it into Compress' bicep.

He pulled hard, ripping off the arm with a feral grin.

Marvin kicked Compress away, leaping over a stream of fire from Dabi.

"Aww, did I hurt your feelings?" Marvin asked as he landed in front of Dabi with his knife raised.

Dabi leaped back, sending another stream of fire at Marvin that he dodged.

"You'll need more than that, Azula!" Marvin yelled, cutting Dabi's chest with his knife.

Dabi stumbled back, Marvin's knife landing on his collarbone harshly.

He sent another stream of fire, forcing Marvin to dodge.

Marvin landed in front of Shigaraki, his arm blurring as he slashed with deadly speed.

Shigaraki tried to dodge, but cuts appeared on his shoulder and chest before he could move.

He reached at Marvin, planning to disintegrate his head.

Marvin paused, watching Shigaraki's hand approach his face and taking a deep breath.

'Arrogant Hope.'

The world slowed to a crawl, and Marvin took the deepest breath possible as Shigaraki's fingers touched his skin.

Marvin moved, grabbing Shigaraki's hand and twisting it, slamming it against the villain's other wrist.

The world sped back up, and Shigaraki's Quirk activated, beginning to disintegrate his wrist.

Shigaraki stopped it an instant later, but half of his wrist was already gone, showing the bone of his arm.

Marvin's knife whistled through the air, stabbing into Shigaraki's uninjured wrist.

Marvin ripped off Shigaraki's hand like he did to Compress, punching Shigaraki in the jaw a moment later.

He jumped away from Spinner's sword, switching his knife to a standard grip.

Marvin blocked the sword and twisted, kicking Spinner in the leg.

Spinner gasped in pain, stumbling forward and directly into Marvin's fist.

Marvin twisted, kicking Spinner in the chest and breaking the villain's ribs.

He leaped over another column of fire, twisting mid-air and throwing a knife at Dabi.

Dabi leaned to the side, but the knife still cut his cheek open.

Marvin landed and rocketed forward, reaching Dabi in the blink of an eye.

He leaped to the left, dodging another stream of fire but throwing a dagger at Dabi.

The knife hit Dabi in the shoulder, barely missing his axillary vein.

Marvin flipped, landing in a crouch and staring at Dabi with a feral grin.

"Come on, Aaron Joel Mitchell," Marvin said. "Is that the best you can do?"

"You talk too much," Dabi replied, sending another stream of fire.

Marvin dodged with ease. "Yeah, it's part of my charm. I'm charming and irresponsible."

'Don't you mean irresistible?' Izuku asked.

'Nope,' Marvin replied.

Marvin's senses flared, and he looked around through his peripherals.

'Good news,' Marvin told Izuku as he dodged more fire. 'You're saved. Bad news, it's Bakugo that's here.'

Marvin blinked as his senses gave him more information. 'Bakugo, Uraraka, Iida, and Tsu. If that's not a dysfunctional group, I don't know what is.'

'Wait, why are they here?' Izuku exclaimed as Marvin continued dodging. 'Where are the Pros?'

Marvin paused again. 'Does Momo count? Cause she's closing in fast.'

'Just Momo?' Izuku asked as Marvin lazily jumped over more fire.

'Yeah,' Marvin replied, throwing another knife at Dabi. 'No clue where anyone else is; they're out of my range unless I concentrate, kinda can't do that right now.'

Marvin jumped around, adjusting himself so he was facing Bakugo's group, keeping Dabi's back to them as they fought.

He threw two daggers, seemingly missing Dabi by a hair and hitting the wall where Bakugo's group was.

The second knife hit to Bakugo's right, causing the group to turn at the sound before glancing up and seeing Izuku a decent distance away.

'How fast can you move?' Marvin asked as he closed in on Dabi with his knife.

'One for All's exhausted again,' Izuku replied. 'I can run at normal speed, but can't use One for All.'

'Great,' Marvin grumbled as he hit Dabi with an uppercut.

A lightbulb went off as he remembered Momo, who was only half a block away, and Rescue One, trailing closely behind.

Marvin twisted, disappearing from view and grabbing Dabi in a chokehold.

He twisted, mouthing something to Bakugo's group before leaping away from Dabi to avoid getting burned.

He flipped back, throwing a small sphere behind him as he did.

Marvin rushed forward, getting dangerously close to Dabi to cover the smoke pellet, which went off after hitting the second knife Marvin had thrown.

'Hopefully, they're smart enough to get the message,' Marvin thought as he dodged more fire.

The wall blew open from a loud explosion, and Marvin grinned; looks like they were.

Marvin jumped back, landing beside Izuku and grabbing him by the collar.

He threw Izuku high into the air before rushing Dabi again, keeping the villain's attention on himself.

"You knew," Dabi said as Bakugo's group flew into the air, courtesy of Uraraka and Bakugo.

"I know a lot of things," Marvin replied.

Izuku grunted as the group grabbed him mid-air, gripping him tightly and making sure he didn't fall.

"KACCHAN?" He yelled, seeing the blond gripping his arm.

"SHUT UP, DAMN NERD," Bakugo yelled.

"How did you get here?" Izuku asked, looking around.

Bakugo sucked his teeth. "Would've gotten here faster if the damn truck didn't take a shit on the road."

"The truck stopped like three blocks from here," Uraraka said, fighting back nausea.

"Truck? What truck?" Izuku asked, brows furrowed.

"Bakugo, what do we do NOW?!" Iida shouted as they began falling, Uraraka unable to keep her Quirk active any longer.

The group collectively screamed in surprise as a net wrapped around them, grabbing them tightly.

"You guys really never think things through," Momo yelled, pulling them harshly.

"And neither do you, Creati," Grace said as she flew in.

Grace wrapped her talons around the net, grabbing it tightly and beating her powerful wings to keep them in the air.

"Hi, Grace," Izuku called, relieved there was backup to help.

Grace observed him in interest before beginning to fly off, using the full strength of her wings to keep them aloft.

Marvin watched them go with a grin, internally relieved his half-baked plan had worked.

His senses flared, and he leaped again, avoiding more fire, though it was smaller than the previous times.

"Getting tired already?" Marvin called as he landed. His stamina was fully developed, and he couldn't be happier.

"Quit moving so I can kill you," Dabi replied, sending another stream of fire his way.

"Is that really the best you can do?" Marvin asked, dodging the flames easily. "Come on, can you fly at least? Do something cool."

Dabi sent a massive column of fire at him, his anger fueling his Quirk.

Marvin paused and decided not to move, letting the blue flames hit him head-on.

The fire enveloped him, burning away his cloak and causing him to click his tongue in annoyance.

'I liked that cloak,' Marvin grumbled as the fire raged around him. 'Asshole.'

His energy absorption kicked in, drawing the flames in before they could burn him.

He stood silently, letting his body absorb the energy and waiting for it to stop.

Dabi dropped his arm after several seconds, breathing heavily at pushing his Quirk so much.

"Ok, why in the FUCK is fire spicy?" Marvin asked as the fire began dying around him.

Dabi stared in shock as Marvin came into view, wearing a dark leather chest plate and his forearms wrapped in bandages.

"How?" He asked, more than slightly afraid. The amount of fire he just used should have barely left ashes, but Marvin was unharmed.

Marvin rolled his eyes. "You're weak, and I can't die," He replied, shaking himself awake.

He rushed forward, fist drawn to blow off Dabi's head.

Dabi's eyes widened as Marvin suddenly appeared. It was too fast to dodge, and Dabi felt his life flash in front of his eyes.

A dark portal appeared in front of Marvin's fist, making it hit thin air as All for One forcefully activated Kurogiri's Quirk.

"DICK!" Marvin yelled, pulling his arm back.

A portal appeared under Dabi's feet, making him disappear right before Marvin's fist hit the space where his head had been.

The portal closed, and Marvin took a deep breath, sensing the rest of the League disappear, even Magne's headless body.

Marvin turned to where All Might and All for One were fighting, seeing All for One barely managing to hold his own.

He shrugged. 'All Might can do that. I need to find wherever the hell Explody and co took Izuku.'

'We're almost ten blocks away, near a giant broadcast,' Izuku told him. 'We're on the roof.'

'Cool,' Marvin replied before taking a deep breath.

He closed his eyes, remembering the feeling of teleporting from earlier.

'This is going to hurt like a bitch, isn't it?' Marvin thought before he disappeared.

It felt like someone had crushed his skull before lighting it on fire, making Marvin grit his teeth as he traveled through space.

Izuku turned as Marvin appeared beside him with a whip-like crack.

Marvin stumbled a little before stopping, putting his hands on his knees as he groaned.

"Why in the fuck does everything I do hurt?" Marvin asked no one in particular. "God, it's like I'm some cosmic asshole's punching bag."

He groaned as he stood, keeping his eyes closed. "Hey, Momo, think you can make a blindfold?" He asked before pausing. "Please?"

Momo nodded, pulling one from her palm and handing it to him.

"Thanks," He said as he tied it over his eyes.

"Who are you?" Hebi asked, giving him a once over.

"Depends," Marvin replied, turning to her. "Are you going to attack me?"

"What's with the scar?" Izuku asked before Hebi could answer. "It wasn't there the other times."

There were two scars on Marvin's face. One ran diagonally across the middle of his face, and another ran vertically, cutting his face into four even parts.

"I wasn't fully here the other times," Marvin replied. "And it's a monument."

"Monu-" Izuku paused as he remembered the way Rinai's face had been cut when she died. "Oh."

"Yep," Marvin replied, popping the 'P.'

He turned to Hebi. "Still haven't answered my question."

Hebi observed him with slight curiosity. "You're the blindfolded guy Bakugo and the others were talking about."

"What gave it away?" Marvin drawled. "Couldn't be the actual blindfold on my face? No, totally had to be something else."

"Why didn't you help us during the forest attack?" Uraraka asked. "We could have prevented all this if you'd been here."

"One, only Midoriya has the means to contact me," Marvin replied calmly. "Two, his phone was broken. Three, it takes a while for me to get places, and I didn't know where the forest was, so by the time I got there, it would've been too late."

"But the service was cut off in I-Island," Tsu pointed out. "Midoriya couldn't have messaged you then."

"He doesn't text me," Marvin replied. "And you know how phones will let you call emergency services, even without a signal? Yeah, it's like that."

"Then how did you get here?" Bakugo asked suspiciously. "There's no way the nerd could have said anything to you. And you were here even before us!"

"I knew approximately where the League of Villain's base was," Marvin said. "But I didn't have a way to contact the Pros, so I went there myself. And I can hear things from the other side of the city, so when Midoriya was taken to where we just were, I followed."

"And you couldn't contact ANVIL?" Hebi asked, arms crossed over her chest.

"How would you react if a random stranger told you where you could find a villain's base?" Marvin asked deadpanned.

"He does have a point," Izuku said, feeling uncomfortable at how much they were questioning Marvin; one wrong word, and everything would fall apart.

Hebi's frown was hidden under her mask. Something wasn't adding up, and it rubbed her the wrong way.

A person who 1-A seemed to know, yet never referred to by name, appeared from nowhere, helping them get Midoriya back, and from what she could gather, fought the League of Villains and possibly All for One by himself before help arrived.

"I really think we should get Izuku treated," Momo spoke up, seeing Izuku's exhausted look.

Hebi nodded, pushing away her suspicions for now. "Agreed. Panzer and 30 are back at the airship," She told Izuku. "We can get you there and then get you treated at ANVIL's base."

Izuku nodded tiredly. "Sure, but what about All Might?"

Marvin looked over at the giant TV broadcast that showed the fight between All Might and All for One.

"Yeah, I doubt he has issues," He said, watching All Might smash All for One face-first into the ground.

The force from the hit created a massive tornado, ripping up the buildings around it like paper mache.

'He didn't lose his powers this time,' Marvin thought, seeing All Might didn't go into his skinny form. 'Does he still have One for All?'

'I think he does,' Izuku replied. 'He still looks strong, even better than when I first met him all those months ago.'

'I really have to find a way to turn this thing off,' Marvin grumbled as All Might stood proud above All for One's body.

All Might's fist was raised, and even though the Hero looked battered, his side bleeding and staining his costume, he looked powerful; Marvin would even reckon to say indomitable.

'Is this what Number One looks like?' Marvin asked, unknowingly asking the same as Bakugo.

"We need to go," Hebi said, snapping them from their thoughts.

Momo leaned over to Izuku, kissing his cheek and whispering something to him.

'Marvin, can you pull back your Factor?' Izuku asked. 'Momo said it's making devices go crazy; it might affect the airship.'

Marvin sighed; restricting his Factor even more than he already did would cause him to have heart problems, as well as mood swings. It would also cause his Factor to back up, making the eventual release even stronger.

He nodded anyway, restricting his Factor to the point it barely reached outside his skin, taking a jagged breath as the familiar pain in his weak spot began.

He followed the group mutely, his entire concentration on restraining his Factor.

'Migraine's going to fucking kill me later,' Marvin grumbled as they walked.

About halfway there, Hebi's radio crackled to life, Panzer's voice coming through.

"What is it, Panzer?" Hebi asked.

"Midoriya," Panzer replied. "We found him."

The entire group froze, their head snapping over to Izuku.

"Panzer, what are you talking about?" Hebi snapped. "We have Midoriya right here."

"What?" Panzer's confusion was obvious. "Midoriya's right here."

Marvin froze, facepalming as he realized what happened.

'Toga got your blood,' Marvin sighed. 'Fuck.'

Hebi's eyes narrowed, watching Marvin and Izuku carefully. "Panzer, keep Midoriya there," She whispered. "Don't let anything show. I'll figure this out."

"Who are you, really?" She asked after she turned off her radio.

"I- I'm Izuku Midoriya, I promise," Izuku said frantically, feeling nervous under Hebi's intense gaze.

Hebi turned to Momo. "Creati, Midoriya's your boyfriend. Can you tell if it's him?"

Momo turned to Izuku, biting her lip in thought.

"Hmm," She approached him slowly.

Her face became questioning. "Izuku, do you love me?"

Izuku turned bright red and nodded frantically. "O-Of course I do, Momo. I say it all the time, you know-"

"Yeah, it's him," Momo told Hebi.

Hebi blinked. "How do you know?"

"Whenever I ask him that, he always blushes around his freckles first," Momo replied with a smile. "He also nods the exact same number of times, eight."

'Holy shit, she's right,' Marvin laughed, causing Izuku to blush more.

"Wow, you really do know him," Uraraka said, making Momo smile brightly.

"Of course I do," She replied, hugging him close.

Izuku somehow turned even redder as she kissed his temple, trying to ignore how well ANVIL's gear fitted her body.

Marvin snorted loudly. "You know you can just tell her that, right?"

"Shut up," Izuku mumbled, feeling his embarrassment growing.

"Tell Yaomomo what?" Uraraka asked, glancing between the two in confusion.

Izuku groaned. "Momo looks really good in the gear," He muttered.

Momo turned bright red but felt a bit of happiness in her chest at his comment.

Hebi, meanwhile, narrowed her eyes. Teleportation and telepathy? Along with enhanced senses or some Homing-type Quirk depending on how literally she took Marvin's statement. But what did that have to do with his eyes?

"Wait," Tsu said. "If Midoriya's here, then who did they find?"

Hebi froze, realizing that Panzer and 30 were in the area with a potential hostile.

She grabbed her radio. "Fuck, I need to tell them."

"Wait," Marvin said, his Factor flaring and shutting off Hebi's radio.

Hebi stared at him with wide eyes. That aura was what Midoriya had when she first saw him, how did this guy have it?

"There's a villain there with a shapeshifting Quirk," Marvin explained. "I- Midoriya knocked her out, but she managed to get our blood, so she's the person your team found."

"Then let me tell them," Hebi hissed, holding up her radio which was currently a very effective paperweight.

"No," Marvin replied. "If you do, she'll become violent. She can change into anyone if she has their blood, if your team tries to capture her, then she'll run away and blend in with civilians."

"Then what do you suggest we do?" Hebi asked as Marvin pulled his Factor back in.

"It's going to be stupid, but it'll work," Marvin said, quickly forming a plan.

"You say that about everything you do," Izuku told him.

"And I have yet to be proven wrong."

.

.

.

Author's Note: And Marvin is now into the real world! All Might didn't lose his powers either, so that's a plus.

As you can see, things are going to be very canon-divergent from now on. Marvin mutilating the League of Villains, fighting and impressing AFO, All Might still being a Hero, and even smaller stuff like Momo killing that Nomu are going to make ripples.

This story will also be changed to the 'M' rating after this chapter goes up. Marvin being here means that things will get bloody fast. He also has his full memories back, so there's going to be a lot of flashbacks and references to his past, along with revealing how Marvin got into Izuku's head in the first place.

For context, Marvin is technically at 100% in this chapter, but it's similar to Izuku's Faux 100% with Fa Jin, Blackwhip, and Float. He can only go 100% for brief moments, which is why he's taking so many deep breaths during combat. But, his 100% is almost equal to All Might and AFO, though he's not exactly there yet.

Also, I know the All for One Quirk is a contact-based Quirk in canon. The reason I changed it will be explored later and will have connections to Marvin, but for now, it's an intentional decision on my part to make All For One slightly more terrifying, since he can steal Quirks at long range.