A.N: I don't plan to write any new stories for a while since I have far too many up already but that doesn't mean I can't write test chapters in the meantime. So here's one:

Plot: Dumbledore and Harry Potter land in an alternate universe filled with all sorts of people with all sorts of abilities. Dumbledore quickly warns Shield of the danger that comes with having Harry Potter in your world. Will his warning be enough?

Scene 1:

"So, what's the deal with Gandalf over here?" Tony asked, staring at the old man who was dressed in bright robes and a pointy hat, if that wasn't odd enough then the man's half-moon glasses and ridiculously long beard and hair would fill the oddness requirement perfectly.

"This is Albus Dumbledore," Nick Fury explained to the Avengers. "He's...believe it or not, a wizard from another world."

"Is this supposed to be some kind of joke I don't understand?" Cap frowned, staring between Fury and Dumbledore with an unamused expression on his face.

"No joke, my good sir," Dumbledore spoke up. "I am indeed a wizard." Dumbledore decided to demonstrate by pulling out his wand, a second later the rest of the people in the room jumped back in shock as he turned a chair into a dog and back again.

"Not that I don't have a list of questions on how that works," Bruce Banner spoke up. "but what does this have to do with Loki?"

"It is my belief that Loki plans to break out a special prisoner and use him as part of his plans."

"It is a possibility that we must stop at all costs," Dumbledore spoke in a grave tone. "I fear that the very world may depend on it."

"And who is this prisoner?" Natasha asked.

"It would be him." Fury pointed to a blank screen that changed to show a video feed of a cell, in the cell was a young man with black hair and green eyes, lying down on a bed and reading a book.

"Fury, how old is that kid?" Tony frowned.

"He's twenty-one years old," Dumbledore answered before Fury could. "and he is no mere child. I'd advise against underestimating him, he has the potential to be the biggest threat that this world has ever seen."

"That boy?" Thor asked sceptically.

"I understand why you all seem to not believe me, but it is true," Dumbledore nodded. "he is the wizard that came to this world with me. His name is Harry James Potter, I had...such high hopes for him. But, unfortunately, he succumbed to the darkness, just like a great many powerful wizards before him."

"What's so special about him?" Cap asked.

"His magical power far exceeds mine," Dumbledore stated. "which is impressive given that I was considered to be one of the strongest wizards of all time. Back in our world, there was another wizard, a man so feared that the other members of the magical population would refuse to even speak his name. That man would later flee from Mr Potter, only to be found and have his head put on a spike on top of the school where the majority of our population attends."

"Are you kidding?" Tony blinked.

"He was eleven years old when he killed his first man," Dumbledore sighed. "it is of the utmost importance that we keep Loki of Asgard away from him. Together, the two of them could do absolutely horrible things that none of us could dream of."

"He's really that dangerous?" Tony asked, staring at the screen.

"When the boy was twelve years old he was able to kill a basilisk by himself," Dumbledore told him before seeing confused looks from everyone. "A basilisk is a snake with venom so powerful that it can kill a grown man in less than a minute, its eyes are also capable of killing anyone who makes eye contact with it. Even attempting to breed them was a serious crime, the one that Harry had fought was hundreds of years old and roughly sixty feet long. A most impressive kill, especially given that the boy had only been twelve at the time. And if that was enough, the year after he was able to fight off dementors, which are 'soul sucking demons' for lack of a better term."

"Soul sucking demons?" Natasha raised an eyebrow.

"He was able to fend off a hundred of them at once," Dumbledore added.

"So, you're saying he's dangerous?" Cap summed up.

"Dangerous? No, he's extremely dangerous." Dumbledore corrected. "At the age of fifteen, he tossed a woman into a colony of giant spiders."

"Are you talking about Umbridge?" A voice laughed, everyone turned in shock and stared at the computer screen and saw that Harry was now standing and staring directly at the cameras. "Really?" Harry laughed, his voice echoing in the ears of everyone. "You're building a case against me and making me out to be the villain and you use Umbridge of all people against me? Let's not pretend that every single person in that room wouldn't want to kill her if they had met her."

"He can hear us?" Bruce frowned.

"When I want to, yes," Harry confirmed with a nod, his eyes staring hard at the camera. "My, my, what an impressive group I see. All of these people, gathered around to stop me. Gods, soldiers and spies. Monsters, inventors and masters of lies. A nice group, Dumbledore, they might just stand a chance at me." Harry laughed.

Scene 2:

Iron Man, Captain America and Thor frowned as they stared at Ultron and the Maximoff twins. All six were ready for a fight, or at least, they were until they heard the sound of clapping. All of them looked up to see a figure float down and land in between them.

"You!" Thor growled.

"Me," Harry grinned. "honestly, I'm gone for a week and I find out that Tony Stark ended up giving birth." Harry gestured to Ultron.

"What are you doing here?" Captain America asked, keeping his guard up.

"Relax Captain Puerto Rico," Harry rolled his eyes. "I'm not here for you, I'm here for them." Harry pointed to the other trio.

"Oh, and what do you want with me?" Ultron asked.

"Not a thing," Harry snorted. "I'm talking about the two next to you."

"What do you want with us?" Pietro frowned.

"You see, my friend, you and you're sister are pure unlimited power and I am interested in that." Harry grinned.

Scene 3:

"They look at me and think that I'm a villain," Harry sighed. "Perhaps I am, or perhaps I'm the only sane one here, who can say. Either way, I will do what needs to be done, are we ready?"

"As ready as we'll ever be." Hela grinned.

"Murdock's sent the documents to the UN like you asked," Wanda piped up. "We should get a response in a few days."

"Hmm." Harry hummed. "What of Frank Castle?"

"Equipped and ready to kill a ton of people, speaking of, Carnage wants to meet with you." Harry's secretary, Gwen Stacy, said. "Also, your agents in Shield and Hydra are reporting that something big is going to be happening soon."

"Hmm, have Pietro and Parker reported back yet?" Harry asked.

"We received a message saying that they'd be home in a few days," Wanda answered. "Peter also wanted me to tell you that the symbiote suit is working perfectly fine for him."

"Good, summon the mutants quickly." Harry grinned. "Now then, let's go to war."