Marvin awoke with a groan, rubbing his eyes and yawning as he sat up.
"THE MORNING," An All Might alarm declared. "IS HERE."
He stood, turning it off without thinking before freezing. Since when did he have an All Might alarm clock? Or an All Might, anything for that matter?
His hair stood on end as he glanced around the room. It was covered in All Might merchandise. A bookshelf with journals and action figures was next to the door, with a calendar.
"It's almost like Deku's..." He trailed off, staring at his hands. Was he SHORTER?
"What the actual f-" He paused as he heard an all-too-familiar voice calling out. He looked around; there was no one, but the voice sounded so close.
"Are you... Are you IN MY HEAD?" Marvin exclaimed quietly, gripping his hair with both hands.
'I think you mean YOU'RE in MY BODY,' Izuku replied from inside his head.
Marvin blinked and was inside some dark room, not too dissimilar from the control room in Inside Out, but instead of emotions, Izuku was standing inside the room. He glanced down at his hands, noticing they were the ones of his real body and not Izuku's.
'I DON'T EVEN KNOW WHERE I AM!' Marvin shouted internally. 'This has to be a dream. It has to.'
He took control and punched the desk, wincing slightly as he accidentally stuck off a piece of wood.
'Woah,' Izuku exclaimed. 'Do you have some strength quirk? Maybe a mutant type? I didn't see you activate it, so it must be. You didn't even seem hurt; it was like nothing! A physical enhancement quirk, then?'
'Izuku,' Marvin replied. 'From what I know, I don't HAVE a quirk. I'm still not sure how or why I'm here.'
That stopped Izuku in his tracks.
'What? How could you not have a quirk? You didn't even make a proper fist, and your knuckles barely hit the wood, yet you still removed a piece from my desk!' Izuku told him. 'Maybe you have amnesia? That would explain how you can't remember why you're here.'
'Normally, people are angry when their bodies are taken over,' Marvin smirked. 'But you're not wrong. I'm not sure if there are any body-swapping quirks, and even if there were, you'd be in my body instead of us sharing one. It's more likely someone shoved my consciousness into your body, but I've never heard of a quirk like that.'
'Neither have I,' Izuku mumbled. 'But if your consciousness is here, your body must be somewhere. Any idea where we could find it?'
'I lived in America,' Marvin sighed. 'What quirk has that kind of range? Besides, I lived in the year 2024. According to that calendar on your door, it's 2085. My body would be 78 at this point.'
'A quirk that sends people to other bodies and other points in time?' Izuku mumbled. 'There's been no record of quirks being able to do that, at least not in the way he's describing. It could be that such a quirk exists, but what purpose would it serve? Sending him into my body and leaving me alive? It doesn't make sense for any villains to do that.'
Marvin smiled; it was just like the manga. The mumbling was actually quite therapeutic since he also had the habit.
'Manga?' Izuku asked as a memory floated by. 'THERE'S A MANGA OF ME?!'
Marvin winced at the volume. 'Another inconsistency. You weren't alive at the time, yet the manga I'm talking about accurately describes your life until your end-of-year exams at UA.'
'Wait. I GET INTO UA,' Izuku exclaimed, throwing his hands into the air.
Marvin blinked. He was watching Izuku's hands raise, but he wasn't the one moving them. It was similar to being in the passenger seat of a car and felt quite odd; no wonder Izuku was freaking out before.
Izuku blinked, staring at his hands before looking around his room. Yeah, he was back in his body again.
'Huh. It seems like you can take control when you get emotional,' Marvin observed. 'In that case, I'm going to sit here while you go about your day; maybe I'll find a way to get out of your body.'
"I thought your body was old at this point," Izuku replied. "You sound like you're my age."
"I was," Marvin replied. "At least, I think so. I was roughly seventeen yesterday."
Izuku and Marvin continued their conversation as Izuku rushed to Dagoba Beach, with Izuku commenting on Marvin's oddly rough voice and Marvin mentioning Izuku's height, telling him he should eat more.
'Quick thing,' Marvin said as they reached the beach. 'You'll have to eat All Might's hair to gain One For All. The Entrance Exam will be tough, but let me handle it; I have a plan.'
The transfer occurred exactly as Marvin said it would, with Izuku feeling mildly less sick than in canon since he was preparing for it.
They reached the gate for UA, and Marvin suddenly grabbed control from Izuku, his eyes serious.
'Hey. What are you doing?' Izuku asked as they tripped; Marvin did not attempt to catch themselves.
'Three... Two... One...' Marvin smiled.
On his 'One,' they suddenly stopped, floating mid-air like gravity had turned off.
"Hey, sorry about that," Uraraka said, letting them down. "I thought you wouldn't want to fall your first day."
Izuku, or more accurately, Marvin, smiled at her. "No need to apologize. Yeah, I wouldn't."
He bowed slightly. "I'm Ma- I mean, Izuku Midoriya, pleased to meet you."
Uraraka smiled. "Ochako Uraraka," She said, returning the bow. "I'll see you."
And with that, she walked away.
Marvin sighed in relief and was about to hand control over to Izuku, but the green-haired teen was still frozen.
'She was gorgeous,' Izuku mumbled internally.
Marvin smiled as they started walking again. 'Oh, trust me. You've seen NOTHING yet.'
Izuku managed to snap from his shock as they entered the hall. Marvin gave him control, and Izuku immediately began fanboying over Present Mic.
Marvin let everything play out until Ida stood, jabbing a finger in their direction and giving them the formal speech equal to the middle finger.
"Oh, I'm so sorry," Marvin drawled, snatching control from Izuku. "I didn't know heroes were supposed to be mute. I suppose that would make Present Mic and All Might villains then, wouldn't it?'
Ida flushed, trying to rally a response, but Marvin had already tuned him out.
They were standing in front of the gates now, and Marvin saw Uraraka nervously gripping her hands. He nudged Izuku to her; just because he liked Momo more didn't mean they couldn't make friends. Besides, Uraraka was strong, just with a lot of doubt.
Ida stopped them, his stare cold as his hand rested on their shoulder.
"What do you think you're doing?" He declared, loud enough for everyone else to hear. "Bothering the competitors? Do you plan to sabotage them?"
Marvin took control. "Ida, has it ever passed through your head that I know her? And not like I know you: Tenya Ida. Quirk: Engine. You have engines in your calves, granting you increased speed and kicking power. You fuel them with orange juice."
Marvin took a step forward, causing Ida to step back. There was a dark aura around Izuku, like that of a person who knew how to hurt people.
"Weaknesses," Marvin snarled. "Engines stall after constant use, so terrible at endurance. You have the durability of an average human, and your quirk forces you to rely on your legs. If your legs are broken, you're useless."
Ida looked terrified, his jaw trembling slightly as he stepped back again.
He braced himself, hiding his fear under a mask of authority. Marvin had to give it to him; there was a reason Ida made a great leader later on, but by God, he was annoying in the beginning.
The Exam began before he could say anything else, and he ran in, quickly explaining the plan to Izuku.
'Ok, so we need Uraraka to get into 1-A by saving me, or us, I suppose,' Marvin said as 5% Full Cowling covered their body. 'So at least our arm, if not our legs, will be broken. Until then, I'm racking up points elsewhere.'
'Are you sure about this?' Izuku asked as they jumped around.
'As sure as All Might is in you,' Marvin replied.
He jumped around, smashing into a one-point robot with both legs.
Marvin jumped back before rushing forward, punching through a two-point.
He twisted, rocketing into another one-point robot and holding it above his head.
He turned with a shout, throwing it into two two-point robots with ease.
They disappeared, jumping from building to building like lightning, fitting given the quirk.
'Didn't you say the lightning was green?' Izuku asked, internally staring at the light purple lightning arcing across their body.
'Might be because I'm here,' Marvin replied, punching through another one-point. 'If the quirk responds to emotions and reflects on you, having two people might change its behavior.'
"THREE MINUTES," Present Mic yelled, causing Marvin to wince.
'Are you ok?' Izuku asked as Marvin shook it off.
'Fine, loud noises aren't my friend, let's say that,' Marvin replied.
They jumped back, a bright laser missing them by hairs.
"Aoyama," He growled, taking the boy aback.
"Ah, so you know moi?" Aoyama asked, striking a pose.
Marvin used Izuku's hand to cover his eyes. "Unfortunately, I've been cursed with eyes capable of registering your existence."
'I thought you said friends wouldn't hurt,' Izuku frowned, tempted to take back control. Marvin was reminding him of Kacchan, if only calmer.
'I know. I don't know what got into me,' Marvin couldn't stop from snarling as the zero-point robot released from its position.
'Whatever it was, hopefully, it won't affect our class relations,' He told Izuku as they ran. 'I truly do not want enemies.'
Marvin grinned as they launched towards the robot with 20% Full Cowling, both wincing as their legs cracked. It wasn't a break, but it still hurt halfway to hell.
"Say it with me now," He grinned, drawing back his fist.
'DETRIOT,' Izuku and Marvin cried.
The robot was right in front of them, and power flowed through their fist.
"SMASH!"
The robot exploded, but not like it did in canon. It flew back violently, its massive frame lifting from the ground and crashing into a few buildings.
A powerful gust of wind flew through the air, smashing windows nearby and pushing back a few that were too close.
'That was much more powerful than I expected,' Marvin commented, handing back control to Izuku, nursing his broken arm.
Izuku blinked; his physical arm looked broken, but the arm inside his mind was fine. Another anomaly of the quirk that sent Marvin here?
'We're FALLING!' Izuku exclaimed mentally, preparing to throw a punch to save himself.
'WAIT, NO,' Marvin shouted, dragging back Izuku from the control.
'SMACK.'
Izuku's body floated in the air, his right arm at an odd angle.
'This feels oddly peaceful,' Marvin commented before they struck the ground harshly as Uraraka released her quirk.
'Ugh, fucking hell, I spoke too soon,' He groaned, rolling over Izuku's body so that it was face up.
'I thought you didn't have a quirk?' Izuku asked, staring at him through the mental space that made up Izuku's mind.
'I don't,' Marvin groaned. 'I have training, I think. My memories, beside the manga about you, are fuzzy. All I know is that's not the first time I've hit something harder than I should have.'