Multi Fandom Crossover Oneshots

The Chosen Name (Part One)

Background: she was in the red room until she was eleven as Natalia Romanova, but she escaped. She went to London using money that she stole, where she got her Hogwarts letter, so two months later she went there as Natalie Rushman. She was a Matrix, which is a person who is in all four houses, (Don't know if that's actually a thing) so she got her own room with another separate room that could be whatever she wanted it to be a room for. She didn't have any friends at Hogwarts so she studied hard and had mastered wandless magic by the end of her first year and was the only person to have multiple Animagus (Don't think that you can actually do that but just work with me here),  though no-one knew that until her sixth year. She needed money in the muggle world, so she decided to do what she was good at for money, killing. When she was twelve and on summer break, she met Grover and he took her to camp half blood as Percy Jackson. She disappeared from Hogwarts a few months after her sixth year started and never returned. She decided to drop out after the Second Giant War. She went back into the mortal world and carried on with her job until she was 17 and Clint recruited her for S.H.I.E.L.D. Three months after she was recruited was the Trials of Apollo, and Jason died. She was at the highest rank in Shield three years later when she joined the Avengers to defeat Loki, then Ultron the next year, and then the Next year they had a 'Civil War,' but 'Natasha Romanoff,' as she was with the Avengers, stopped the fighting and they talked it out. The next year they had to defeat Thanos and they won. After they defeated Loki, she joined Sherlock Holmes or Dr. Strange and John Watson with solving crimes as Olivia Sanders. The only people who know about all of her worlds are Chiron, Sherlock, John, and Severus Snape who was her teacher at Hogwarts that she kept in touch with and was a son of Hacate. Minerva Mcgonagall knows that she is a demigod, being a legacy of Athena, Maria Hill knows that she's a witch, and Fury knows that she is Olivia.

On a side not, she's a lot more playful when not on missions, and even then throws in a few jokes, because I have to incorporate Percy's personality.

Duck

B-b-be careful making wishes in the dark, dark

Slash

Can't be sure when they've hit their mark, mark

Stab

And besides in the mean-meantime

Parry

I'm just dreaming of tearin' you apart

Uppercut

I'm in the deep details with the devil

I could tell that people were watching now, the music and sounds of fighting must have drawn them out.

So now the world can never get me on my level

Sweep their legs out from under them

I just gotta get you off the cage

Dodge

I'm a young lover's rage

All of this just because I wanted to say goodbye to my friend.

Gonna need a spark to ignite

My songs know what you did in the dark

I finish the fight just in time for the song to finish and look around. There are around a hundred men and women (I know that's not realistic but I'm trying to make her more badassy so just go with it.), all of them have some kind of injury, and are scattered around in the grass. Most of them are knocked out, but I can tell that at least a third are dead. After about a minute of scanning the battlefield, the doors open and kids come streaming out. Most are staring at the battlefield, but some are staring at me. Teachers are trying to get the kids back into the school, to no avail. Obviously. It's not everyday that you see the Black Widow fight off a hundred men on her own to My songs know what you did in the dark by Fall Out boy. Though it is the perfect battle song.

I'm busy scanning the crowd, trying to do the thing that I actually came to do, when I spot a face in the crowd. He is obviously trying to slink away and not get noticed, but doing a horrible job of it. My face brightens and a grin spreads on my face.

"Peter!" I call out and wave to him. He sighs, and seeing that everyone is now looking at him and there is no escape, makes his way over. A teacher tries to grab him, but he slinks out of his arms. Peter comes up in front of me.

"Hey Nat," He sighs. "Why are you here? Because I know that those HYDRA agents were only here for you, and you would be the last person to attract them to a school of all places." He says. I nod along with him.

"I came to say goodbye. Duty calls, my dude. I'll be gone for a while." I sigh and ruffle his hair. He frowns.

"I'm guessing you can't tell me what it is?" I shake my head.

"Sorry dude. But can you call a clean up crew? I have to go." He nods. I turn to face the crowd.

"Sorry about that, though I hope it came to your amusement. Schools a bitch, dudes." I grin. "Anyway, I best be gone." I turn to leave. And so I did. With around a hundred teenagers whispering behind me. I left to go to the last place I never wanted to go back to.

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Harry's POV

Professor McGonagall was in front of the great hall, doing the usual speech. Doing Dumbledore's usual speech. Everything had changed after the war. Everyone was sadder. I got pitying looks wherever I went. And I hated it. I didn't want their pity.

McGonagall was about to finish her speech, and there was still no DADA teacher. Suddenly, the door burst open, and in came a woman who looked like she was in her early twenties. She lazily strolled into the room.

"Sorry I'm late. I didn't want to be here." She said dryly. McGonagall rolled her eyes and sighed.

"Hello Natilie." She said tiredly, like she was completely used to this. "Everyone, this is your new DADA teacher, Natalie Rushman-" She got cut off.

"Natasha Romanoff. I go by Natasha Romanoff now." Mcgonagal gave her a questioning look. Natasha sighed but answered her silent question.

"Honestly, I'm surprised you haven't put the pieces together yet, Minerva. Why do you think I had a different name at camp? I don't use the same name twice in different places. It's constantly changing. I left Natalie behind in sixth year. I've come back to it once, in a completely different situation, but I will never use it again." She said.

"Of course." Mcgonagall said dryly. "Well then, welcome your new DADA teacher, Natasha Romanoff. Or are you going to interrupt me again and say it's actually Percy Jackson?" Mcgonagall asked sarcastically, but Natasha just shrugged and gave a trouble-making smirk.

"If you'd prefer to call me that, then go ahead." She said before skipping up to the professors table. But instead of going to the DADA teachers seat, she went over to Snape (Who is still alive. Fight me.) and gave him a hug from behind. "Sevvy!" She exclaimed. And instead of smiting her on the spot, he chuckled. Severus Snape chuckled!

"Hey Percy. How's camp doing?" He asked her. She shrugged.

"Well, they still think you're dead sooooooooooo........................." She unwrapped her arms from around him and went to her rightful seat. "Carry on." She waved her hand towards Mcgonagall who just rolled her eyes.

"Anyway. The forbidden forest is, once again, forbidden." Instead of glaring at me like she usually does, she glared at the new teacher. She put on an innocent face.

"Who? Me? What did I do?" She said innocently.

"You are literally why that rule was put in place." McGonagall said sharply while the new teacher just grinned. With the two still bickering, I could already tell this would be an interesting year...

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So that happened...................anyway, tell me if you want a part two! I forgot to add that into the other chapters, but you can do the same for them too.