Strange Potter

Harry Potter - J. K. Rowling Marvel Cinematic Universe
F/M
Gen
G
Strange Potter
author
Summary
The night Dumbledore placed a young baby on the doorstep he thought he was doing what was best for the future. However another presence threw a wrench in his 'plan'.Dr.Strange/Avengers + Harry Potter crossoverAU set in modern time
Note
Welcome to my first story in this fandom.Warning there will be bashing of my least favorite Harry Potter characters.I won't tell you not to read, but if you choose to then you know what is ahead.
All Chapters Forward

The Child

 

In the suburban housing of Little Whinging, England an old man with a long white beard holding a small infant in his arms.

He placed the infant in a basket on the front porch of his only living relatives after the tragic loss of the boy's parents.

"Good luck Harry."

After laying the orphaned baby on the step, with a note explaining everything, the aged wizard and his companions disappeared.

Unknown to the old wizard the events of that night didn't go unnoticed by a higher authority. 

A bright sparkling circle appeared just after the others had parted. Out walked a younger goateed man with a red cloak along with another Asian man beside him.

"We shouldn't be here." His companion insisted.

"Yes, I'm aware of the rule. However, a massive magical attack happened and it's our duty to ensure our reality is protected."

"Strange, we let these ones deal with their problems."

"Yes, and how has that worked? How many of the self-proclaimed 'Dark Lords' have risen? I understand that these magical individuals are very far behind and full of themselves, but I can't simply ignore what's happening anymore." Strange argued.

The sorcerers of his group had an unspoken rule. Do not involve themselves in the affairs of the 'Hidden Wizards'. It was a solid rule, due to the high level of corruption and ego-driven individuals that existed in the wizarding world.

Wong was about to argue but when he looked ahead he saw the basket. "Is that an infant?"

The two approached the basket and discovered it was indeed an infant.

"Who leaves a baby on a doorstep?" 

Strange picked up and read the letter. "Albus Dumbledore does." He scuffed at the words. "Incredible way to tell someone their sister is dead and to raise their child."

"Dumbledore is known for his theatrics, but this is beyond foolish." Wong sighed. "It doesn't appear he even knocked."

Dumbledore had a reputation throughout the wizarding world and even the sorcerers knew of him. Strange had learned quite a bit about the self-proclaimed 'Leader of the Light.' And the more he learned the less he liked. 

He knew all about Dumbledore's history. Including the part, Dumbledore kept buried. From his childhood to his love affair with Grindelwald.

Stephen knelt down and gently picked up the sleeping baby. He looked over the infant when the scar on his head grabbed his focus. "Wong, do you sense what I do?"

Wong looked at the scar and jumped back. "Is that...who would leave such a thing in a child?" 

"A man who either didn't know or didn't care," Strange said. "Go back to the Sanctum and prepare a safe room for extraction. Then I need you to see what you can learn about this child."

Wong nodded. "Normally I'd advise against getting this, but I agree this is unacceptable. What will you be doing?"

"I'm going to do what a civilized person does. Knock." He handed Harry over to Wong who went through a portal back to the British Sanctum.


"Who the bloody hell is at the door at this hour?" An overweight man with a long mustache mumbled to himself as he climbed down the stairs. When he pulled open the door, he was puzzled by the man wearing some strange outfit.

"Mr. Dursley? Is your wife available?" 

"Do you have any bloody idea what time it is?! Who are you and what do you want with us?" 

"Mr. Dursley. I'm afraid this concerns your wife and her sister."

"Sister! Wait are you one of those!? Get out of here and take your freakiness with you!" He went to slam the door but it didn't move.

"Mr. Dursley, we can have a calm civil discussion or you can yell and wake the whole neighborhood up and have them see it. Your choice." 

"Vernon, what's going on? Who is it?" A tall skinny woman asked as she came down the stairs. One look at the man at the door and she could tell he didn't belong in her neighborhood. "Who are you?" She feared she already knew.

"Mrs. Dursley. My name is Dr. Stephen Strange and I have news concerning your sister and nephew." Strange answered.

"So it's true, you're one of them!" 

"Do you want to have this conversation on your front porch?" 

Petunia didn't want him in but didn't want to wake the neighbors either.

"Fine come in and make it quick." She motioned for Vernon to let the man pass.

Strange came in and the door shut behind him.  "Lovely house." He noted. "I'm afraid I have some sad news to report to you. Your sister and her husband were killed this evening. You have my condolences."

Petunia did show surprise and maybe a hit of sadness but it disappeared fast. "How?" 

"She was murdered by a man driven by darkness. She was a part of a resistance, with her husband, that had been fighting to stop his group from taking over all of Britain." Strange answered. "Your nephew survived and was placed on your doorstep."

"What?! We don't want that freak anywhere near here!" Vernon bellowed his face turning red.

"He's your nephew." Strange narrowed his eyes.

"That's not our concern." Petunia raised her nose. "We don't want anything to do with him or your kind."

"Then why did Dumbledore place him here?" 

"How would I know?" She sneered.

Strange pulled out the letter and handed it to her. "This was attached to his blanket."

She snatched the paper from him and her eyes grew bigger as she read each line.  "Raise him?! Who the bloody hell does that old fool think he is?!"

"I take it this wasn't discussed with you?"

"Of course not! I don't want him anywhere near me or my family." 

"That's a rather dim perspective. He is your blood. The last piece of your sister."

"My sister died the second she gave herself to your freak world! I will not have him in my house."

"You heard her. Get out and never come back!" Vernon yelled.

"Do you know your sister's wishes? I imagine she would have made plans for this and would have left some candidates for Harry's care."

"The only one I heard of was someone named Sirius Black, I think. He was supposed to become his godfather. Other than that I never asked because I didn't care." 

"Are you done?!" Vernon demanded.

Strange looked at the man who was becoming more purple with each moment.  "Very well. I can take the boy off your hands." He waved his hands together and a piece of paper appeared.

"I will not have your freakiness in my house!" Vernon grew even angrier.

Strange ignored him and offered a pen and the paper to Petunia. "Sign here and you'll officially waive all rights to your nephew over to me." He saw her hesitation. "The longer you take the longer I have to be here."

She took the pen and signed the forms.

"Now get out," Vernon ordered.

Strange looked at the man and shook his head. "Well I would say it's been a pleasure but that would be a lie. Take care. You'll never see me again."

He made a portal and stepped through happily closing it behind him.


"What have you learned?" Strange asked when he met with Wong.

"The word around is that this baby defeated the self-proclaimed dark lord and is being praised as 'The Boy Who Lived'."

"That the biggest pile of..." Strange rubbed his temple. "All signs point to his parents defeating Voldemort. How could they even think a baby would win? A bad diaper?"

"Told you this world lacks logical thought." His companion shrugged.

"Clearly. I need to find a man named Sirius Black. He's the boy's godfather and who he is supposed to be with."

"I heard of him. Word is he is the one who betrayed the Potters."

"Any proof to that accusation?" 

"He was the secrets keeper there for the only one who could have given their location to this Voldemort."

"That charm?" Stephen read about it. "Well, that does raise concerns. I still need to find him and see for myself. If it's true we'll make sure he finds his way to their police force."

"Aurors. They're called Aurors." Wong corrected.

Stranger gave Wong a look that said he didn't care. "How is the room coming?"

"It's being set up. We'll begin the extraction as soon as we can."

"Good. I don't want that inside this child longer than required."

"How did his family take it?" 

"Family?" He scuffed. "That word has no place with those people. I don't think I've ever met a worse example of humans in my life." His anger was obvious.  "They signed custody over to me without a second thought."

"What are you thinking? It's one thing to remove this darkness from the child but you can't raise him."

"Says who? This child has something about him. Something I can't quite place. He's going to need all the training we can provide."

"This doesn't seem wise. Even for you."

"If I followed the rules all the time you would be dead, remember?"

"Yes. No need to rub it in."

Stephen smiled and began his hunt for Black.


He ran as fast as his legs would go. His blood was boiling with hate. 

His best friend. Brother in every way was dead. Betrayed by someone they all trusted. 

The rat was going to die if it was the last thing he did.

Suddenly the man found the ground under him gone and he was falling. It was not a pleasant landing.

"Ah what the bloody hell?" He wasn't in the street anymore. He was in a very well-designed study area. 

Right in front of him was a man sitting casually behind a desk.

"Sirius Black? Thank you for joining me." The man greeted him.

"Who the hell are you? Where am I?" Sirius pulled his wand out and pointed it at the stranger.

"Yeah, that won't work."

Sirius's wand flew from his hand and he found himself restrained in a chair. He fought and struggled but couldn't break free.

"Who are you?!" He demanded.

"Calm yourself, Mr. Black. My name is Dr. Stephen Strange Sorcerer Supreme."

Sirius stopped struggling. "That not possible. The Sorcerer Supreme is just a story to scare purebloods. Now, where am I?"

"It's no story, Mr. Black. My group has watched over your society since the Status had been founded. We don't get involved normally, however recent events have forced my hand." Strange said. "As to where you are. That will remain a secret until I get the truth from you."

"Well Dr. 'Stranger' Sorcerer whatever. I don't care who you are I have to go. I have a rat to kill!" Sirius made a point to mock Stephen's name.

"You have bigger issues than pest control Mr. Black." Strange argued. "Right now the whole wizard world is saying you're the one who sold out the Potters to Voldemort."

"It wasn’t me it was the rat, Peter!" 

"Who?"

"Peter Pettigrew. He was the secrets keeper. I was a diversion."

"Interesting. Why did you not inform anyone else?"

"I had to catch the rat! He killed my brother... He betrayed us! I...I didn't have anything left." 

Stephen studied Black for a second then flicked his fingers freeing the man. 

"You believe me?" Sirius asked in disbelief.

"You couldn't lie. Not in that chair. If you had then the restraints would have, let's say become uncomfortable."

"My wand?" 

"I think I'll hold on to that for now. You have someone I believe wants to see you." He motioned for the door. "Wong."

Sirius turned and saw an Asian man come in holding a small child in his arms...

"Harry!" Sirius ran over to him. "How? I gave him to Hagrid."

"We found him on a doorstep," Wong said.

"What?!"

"It seems Dumbledore decided to leave him on Lily's sister's doorstep in the middle of the night without any protection," Strange said as he moved over to the three.

"That doesn't make any sense." Sirius couldn't wrap his head around that. As he looked at his godson and felt tears building up. "Can I hold him? Please?"

Strange nodded to Wong who gently placed Harry in Sirius's arms. The movement woke the sleeping toddler.

"Pafoo." Harry's green eyes met Sirius.

"Yes, it's me pup. I'm here." He held him close. "I'm right here..."

"Mr. Black. While I hate to interrupt this reunion some matters need to be addressed." Strange cut in after a few minutes.

Sirius studied Strange. "Who are you?"

"I already told you." 

"So you're saying all those stories of a secret organization that knows magic unseen by others existed. You think me that stupid?"

"You were going blindly after a man for petty revenge while abandoning your godson. Yes, you are capable of being that stupid, but I'm not lying. How do you think I brought you here? Or that I have Harry here as well? If I was under this 'dark lord' do you think either of you would still be alive?"

Sirius looked beyond pissed at his assessment of him but had to agree that neither Harry nor him would be alive if it was Voldemort's band of mask-wearing cowards holding them. "I have to get Peter. He needs to pay."

"That is the last thing you need to be thinking about right now. The most important thing to you is in your arms. That's your top priority."

Sirius looked down at his pup. The little boy smiled and nuzzled into him.  "I have to tell Dumbledore. He'll understand and help get Peter."

"The same Dumbledore who left a baby like a thing of milk?"

"He had to have his reasons. He always does." Sirius argued.

"I'm sorry I didn't know you needed Dumbledore's permission to be a godfather?"

"Don't talk that way about him. He's a great man!" His tone earned a startled cry from the toddler. Sirius realized he was scaring him. "I'm sorry pup. It's okay." He pats Harry's back gently.

"Mr. Black I understand your loyalty to Dumbledore, but this needed to be handled by those whose job it is. Not the Headmaster of a school. Right now you are the most wanted man in the wizarding world for a crime you didn't commit. I know you don't know me, but if you want to be the man your friend trusted you to be I need you to trust me."

"You're asking a lot," Sirius said. "But you brought me Harry so I guess I'll do it your way. For now."

"Good. Now, are we going to catch this Pettigrew and see him punished for what he's done, or are you going to run off and do something stupid?"

"Harry will be safe here?" 

"He's safer here than anywhere else. Certainly safer than on a doorstep." Strange scuffed. "You need to think. Is there anyone who might believe you that could give you some assistance? Someone in the Aurors would be preferred."

"Frank and Alice Longbottom maybe, but they're hidden as well. I don't know who their secret keeper is." Sirius thought a second. "Wait, Alastor Moody. The old paranoid man might believe you are who you say you are. He mumbled some unbelievable things at the meetings."

"Well then." Strange pulled open a portal. "Shall we?"

Sirius's eyes grew wide at the display. Maybe this guy is who he says he is?


Alastor Moody was just walking into his home to get a change of clothes and some pepper potions. The fall of the dark lord was leaving a big mess and he need to work overtime to catch as many of the dark bastard's servants as he could.

"Bloody useless Ministry will let some off on the Imperius Curse excuse." He mumbled to himself.

He was about to head upstairs when all of a sudden a strange yellow circle appeared in front of him. Thinking quickly he dropped behind a couch and steadied his wand at the impending attack.

When he saw two figures emerging from the circle he was temporarily stunned. He had never seen magic like this. Then he recognized one of the men.

"Black?! Stupify!" He shouted and sent the spell forward.

Another circle materialized in front of the spell and intercepted it. It disappeared and reappeared behind Alistair hitting himself in the back with his stunner.

"That is brilliant. You have to teach me that." Sirius chuckled.

"No," Strange answered and restrained the man in a chair. "Now I'm going to awaken him. We need to be quick if you want to catch your former friend."

He canceled the spell and Moody awoke tied up. 

"Come to add my head to your wand belt for your master Black?" He sneered at Sirius.

"I wasn't the secret keeper. It was Pettigrew. We switched and I acted as a diversion to keep him safe." Sirius explained "I trusted him. It was the biggest mistake I have ever made."

"Likely story Black."

"Release him," Sirius said. "He'll never believe me if he's restrained.

Strange flicked his finger and the bonds left. 

Alastor looked back and forth. Waiting for the attack. But it never came.

"I need you to believe me. I loved James and Lilly. I would die before I betrayed them." He held out Moody's wand to him.

Alastor snatched it and eyed Sirius. 

"If this is some trick I'll put you down permanently. No stunner. I'll kill you here and now."

"I know." 

Moody looked at Strange. "Who the bloody hell are you?"

"Dr. Stephen Strange. Sorcerer Supreme."

Alastor's real eye went wide. "It can't be."

"Why because everyone doesn't want to believe it? Did you think you lived in secret all these centuries and not have deeper ones hidden?" Strange asked. "I'm the most recent Supreme and now I've decided the time of sitting and letting you fix your stupidity is over." 

"Now see here. I've been fighting against the dark since before you were in nappies!"

"And is that supposed to impress me? I've fought things you can't imagine to protect this world and you got the luxury of never knowing it. Now are you going to help catch the real culprit or are we going to continue this measuring contest?"

"If you're who you say you are why ask for my help? You could easily catch Pettigrew. If he is responsible."

"He is," Sirius said.

"I could but wouldn't it have more impact on you? A decorated Auror or some unknown sorcerer? You and Mr. Black can bring the traitor to justice and clear his name. Are you going to help or not?"

Alastor looked back and forth between the two. Then pulled out a vial from his pocket. "Sit Black. I need to be sure."

Sirius sat down and waited for the drops. Three drops on his tongue and he went into the death stare.

"Are you Sirius Black?"

"Yes."

"Were you in Slytherin in Hogwarts?"

"No. I was in Gryffindor."

"Were you the secrets keep for the Potters?"

"No."

"Who was?"

"Peter Pettigrew."

"Why did you tell everyone you were?"

"I thought it was a funny prank. Everyone would chase after me while he was hidden. And if I was caught I could have one last laugh at the evil bastard's face."

Moody studied Sirius the whole time. It wasn't easy but to a trained eye, someone could see the tell-tell signs of some giving the antidote for Veritaserum to counter the effects. Black showed none of the signs.

"Alright, Black I believe you. We all suspected a spy and after tonight it looked like it was you." He pulled out his flask and took a drink. "I need to tell Dumbledore."

"We don't have time. Peter could be gone by then and we need to catch him." Sirius argued.

"Mr. Moody we need to act now to stop the spread of false information about Mr. Black and the only way is to bring Pettigrew in fast." Strange added.

He didn’t want Dumbledore getting involved. The man held control with absolute authority and would likely dampen their work rather than help.

"You don't trust Dumbledore." Alastor realized.

"I have my reasons. I'll be more than happy to explain after we catch Pettigrew."

Moody thought this through. He was friends with Albus and had high respect for him, but he wasn't blind to the man's faults. Lately, his need to control every aspect of things was more harmful than beneficial. 

If this guy was the Supreme then he would have unlimited information. Things that could greatly benefit the war and what comes after.

"Fine." Moody looked at Sirius. "Any idea where Pettigrew is?"

"I can help with that." Strange offered as he opened another portal. "Through here."

Moody was paranoid for good reason at these displays. "You first."

Strange rolled his eyes and stepped through. Sirius followed after then a reluctant Moody did.

"Mr. Pettigrew is somewhere in this area."

"We have to be careful and mindful. He is a rat Animagus." Sirius informed.

"Why the bloody hell is I just now finding this out?!" Moody growled.

"We all were. James, me, and Peter. We kept it hidden to give us an edge in the war."

"You should have told me at least," Moody argued.

"Maybe. We didn't know who to trust. You never do either." Sirius countered his argument.

Moody grumbled and limped ahead. "Well, wait are you waiting for?" He asked as he saw they weren't following. "We got a rat to catch!"

 

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