Disclaimer: I do not own Harry Potter or Animorphs.

Okay, this is a Harry Potter/Animorphs crossover. For those of you who don't know what Animorphs is, it is a book series by K.A. Applegate. It is about an aliens speices, Yeerks, who are secretly invading earth, and the only people who know and can stop them are the Animorphs, five kids and an Andalite (another alien), who have the power to change into any animal they can touch. If you want to do more, do a websearch.

This isn't going to be a very long fanfiction. Probably about 10 chapters, but I'm not sure yet. Anyway, enjoy!


.: This is thought-speech :.


Prologue - We are Where?

.:We need to demorph in ten of your minutes, Prince Jake:. Ax stated, breaking the silence.

.:Ax, they are Earth's minutes, and since you are on Earth, they are your minutes, too:. Marco said, irritated. Once again, they were hitchhiking a ride on a Yeerk ship. It wasn't a blade ship, but it was still rather large.

.:Okay, everyone. Ax, you demorph first. We'll follow once you are sure the coast is clear:. Jake said, ignoring Marco. .:And don't call me Prince.:.

.:Yes, Prince Jake.:. Jake rolled his eyes. Or tried to. They were all currently in a very small room, one that had been left alone for the entire six hours they've been on the ship, all in cockroach morphs.

Thirteen minutes later, all six of the Animorphs were back in roach morph to wait for two more hours.

.:So where are they going that is taking this long? I hope we aren't going North again.:. Marco complained. .:We all know how well that turned out to be.:.

.:We are not going North. It seems that we are going East.:. Ax interrupted.

.:East? I hope they haven't infested another part of the country. We won't be able to keep track of anything:. Cassie said. The others silently agreed. As much as they hated to admit it, if the Yeerks were working on infesting other places, the Animorphs wouldn't be able to do much. Suddenly, the door opened and two human controllers entered.

"Yes, we must go now. The Visser wants us to check the club out. It must be ready in two weeks."

.:On them, now:. Jake ordered, and one by one, the six roaches climbed on the two humans and hid themselves.

After what seemed like forever, the two men were walking along a street toward the club. They were silent the entire time. Finally, they stopped in front of the building, and the Animorphs ditched their ride before the men entered it, not wanting to be trapped inside.

Finding garbage dump in an dark alley, the demorphed.

"Ax, I think it might be best if you morph human. Tobias, you too," Jake suggested, and the Andalite and Tobias did so.

"What now?" Rachel asked.

"We see what that building is, and what this "club" is about," Jake answered.

"Like this? We're in our morphing outfits. We can't walk around like this."

"It's summer, sure we can," Cassie replied.

"Come on, the sooner we get this over with, the sooner we can go home, back to our normal amount of insane-ness."

"Insane-ness? Is that even a word?" teased Rachel.

"Sure it is," replied Marco. And so the six walked out of the alley onto a busy street.

"Um, guys?" Cassie said. "This looks like London."

"And how would you know?" asked Marco.

"I've been here a few years earlier. Vacation." Marco shook his head.

"London."

"Yeah." Jake, Marco, and Cassie sighed. "This isn't good," continued Jake.

"Nope."

"Ugh," groaned Rachel, then she pointed to a building. The Sharing.

"No. This really isn't good."

"Okay, let's keep walking. We don't want to look like we might try to make trouble. Especially since we aren't in the States." The rest agreed, and they walked down the side walk.

"Kings Cross."

"Where?"

"It's a train station," answered Cassie.

"Obviously," Rachel said as they came to platform 9.

"I think we should go back to cockroaches," said Cassie.

"Why? We are in London. No one is going to recognize us."

"If the Yeerks are here, someone might. You don't know which Yeerks are here, at least for the summer."

"I agree," said Jake. "Just, where are we going to morph?"

"Bathroom," Cassie said, pointing to the restroom signs.

Ten minutes later, six cockroaches were coming out from under the doors of the bathrooms, spread out enough to not look suspicious. They were continuing along when a herd of feet were pounding down around them.

.:Climb the wall ahead:. Jake yelled. What happened next was something they did not expect.

.:Woah! What happened:. Rachel yelled when, instead of going up the wall, they went through it. And there were still feet unknowingly trying to stomp them.

.:That had to of been the Yeerks doing:.

.:Agreed. Where were all these people coming from:.

.:Who knows:.

.:Tobias? Could you find a place to demorph and check it out:.

.:Sure, Jake.:. Tobias did so, and was surprised once again. .:Platform Nine and Three Quarters:.

.:What:.

.:Yeah. That's what the sign says.:.

.:We should check this out. I don't know why the Yeerks would choose to use trains, but the train is right there. It should take us to where ever they came from. No one seems to be boarding it, and it looks like it is ready to leave.:.

.:Tobias, if we huddle together, could you pick us all up and bring us into the train? I don't know how we would get on, otherwise.:.

.:Yeah. But be in two groups, one for each talon.:. Tobias few down, picked them up, then flew into an empty window. The platform cleared shortly before Tobias had demorphed, so there was no one there to see anything odd.

Seeing the compartment was empty, he put down his passengers.

.:I think it is safe to demorph. It's empty, and no one is on the train. I checked through the windows before.:.

.:It's a castle.:. stated Cassie. They were all in the air, in their various bird morphs, and were irritated. It was raining, and they wanted out of the air as soon as possible.

.:It looks huge. Even if there is someone there, we should be able to steer clear of them:. suggested Jake. They all agreed, and few toward the castle.

It wasn't actually hard finding a place out of the rain. There was a tower that just held a bunch of owls, and the windows were open. The owls irritated Tobias, of course, but they didn't seem to mind him too much. As it were, thought, they all demorphed, or morphed in Ax's and Tobias' case, to human and tried to figure out what to do.

Chapter One - Two World Collide

Severus Snape was irritated, to say the least. He needed to owl a letter, and tried to use that as an excuse to escape his coworkers. Unfortunately, it didn't work so well. Albus and Minerva insisted on coming with him, claiming they had letters to send, also.

Opening the door to the owlry, the three entered, and froze. There were six children none of the adults recognize. The kids were frozen, too.

"Who are you?" hissed Snape, wand ready. Out of the corner of his eyes, he saw that Minerva and Albus also had their wands out. The kids exchanged a frighten look between themselves. When they didn't answer, he asked again. "When you are asked a question, you are expected to answer," Snape said, switching over to his "strict professor" mode. It worked; one of the boys stood up, and the rest followed suit.

"Hi. I'm Jake. This is Rachel, Cassie, Marco, Ax, and Tobias," Jake answered the man's question, not bothering to lie. They were caught, and he had a feeling these people weren't controllers. Controllers didn't walk around wearing what these people were, and they carried weapons like dracon beams instead of sticks.

"And what, pray tell, are you doing here?" Jake looked back at his fellow Animorphs.

"I don't know, sir." It was a partial truth, at least. The man who was asking the questions gave Jake a look that said, "I don't believe you".

"You must have some reason you are here, children, and I suggest you answer truthfully," McGonagall said. When there was no answer from the six kids, just looks between them, Dumbledore decided to get involved.

"Yes, I do believe a trip to my office would be nice. Come along." Jake looked back at his friends. They looked as helpless as he felt.

.:I believe we should go with them, Prince Jake. I do not believe these humans are controllers.:. Jake gave a small nod toward Ax, then followed the old man out of the room.

What the Animorphs saw on the way to the old mans office amazing. They walked in silence, looking at the moving and talking portraits on the wall.

"Kiddies in trouble, yes they are!" sang Peeves when he saw the small group. Unexpectedly, for the Animorphs, the poltergeist threw dropped a few water balloons, as he passed by overhead, one landing on Rachel, the other on Ax.

"Why I. . ." Rachel started, before Cassie stopped her. She looked really mad.

.:What was that:. Ax asked.

.:I don't know:. answered Tobias. .:It was a ghost or something.:.

.:A ghost? Whatever it was, I don't like it. Why would it get us wet? What was that:.

.:It's called a water balloon, Ax-man. I don't know why.:. Finally, they seemed to reach their destination. Which seemed to be some sort of Gargoyle. Jake and Cassie exchanged looks, and all were surprised when it started moving when the old man said "Gumballs". They followed the old man and lady up the moving stairs, and the younger, black haired man followed behind. In the office, Dumbledore conjured extra chairs, and invited the kids to sit.

"Lemon drop?" he offered, watching the children closely, especially the ones named Jake and Tobias. Jake has been the only one who has talked, and Tobias was staring intently, making the headmaster slightly uncomfortable.

"Lemon drop? Op. What is that?"

"Candy, Ax."

"Candy? Dy. That sounds good," he said, taking one from the dish.

"I don't . . . never mind," said Jake. He looked at Ax and sighed. "Just don't chew it."

"Why not? How do I eat it if I don't chew it?"

"You'll probably break your teeth. You suck on it."

"Suck. Ck. Suck. That's a weird word." Marco rolled his eyes.

"Yeah. Weird."

"Anyone else for a lemon drop?"

"No," the rest of the Animorphs answered.

"Now, I must insist you tell us what you are doing here."

"Where is here?" Jake asked.

"I don't believe you are in any place to be asking questions," Snape said. Jake just glared at him, then turned back to the old man.

"You are a Hogwarts. Forgive me, I haven't introduced myself yet. How rude I am being. I am Headmaster Albus Dumbledore."

"Headmaster? This is a school?" Jake asked. Dumbledore nodded. Jake quickly weighed his options. He could tell these adults, with the chance of them being controllers, or them not believing them, or he could make up a story. Taking a chance, he voted for telling them the truth. He turned to his friends, making eye contact with each. All of them nodded, so he turned back to the headmaster. "You want to know why we are here?"

"I am sure the headmaster has already made that clear," Snape said.

"Ax?"

"Yes, Prince Jake." Jake glared at the andalite.

"Don't call me 'Prince'," he retorted.

"Yes, Prince Jake." Marco snorted, Rachel shook her head, and the adults of the room examined Jake.

"Don't freak out," he told the adults.

"Why would . . . oh," McGonagall said as she saw Ax beginning to demorph. "What . . ." A minute later, Ax was in his andalite form. "What are you?"

.:I am an andalite.:. Ax answered simply. The headmaster turned to Jake, who he assumed was some sort of leader to this group.

"Are you all andalites?"

"No, he's the only one, thank goodness," Marco said. "Just what we'd need, another arrogant alien complaining about how primitive humans are. No offense, Ax-man."

.:I do not take offence to that, Marco.:. Marco rolled his eyes. .:Tobias, it has been an hour and 43 minutes.:. Snape narrowed his eyes.

"What has been an hour and 43 minutes?"

"That is how long I have been in morph," Tobias answered, the first time he said anything since the adults arrived. "If you in morph for longer than two hours, you get trapped in that form."

"Morph? I thought only he was andalite."

"He is."

"Can you all morph?"

"Yes."

"Then what is he?" McGonagall asked, pointing to Tobias, which caused his to turn his hawk-like gaze on her.

"I am human. I was trapped in a morph a long time ago, but I got my morphing powers back. My true form now is a hawk," Tobias explained, then started to demorph.

"What are you doing here?"

"Well, that's kind of a long story," said Jake. "We kinda hitched a ride"

"again," interrupted Marco.

"on a Yeerk ship and ended up. . . where? In England? We took a train here."

"What is a Yeerk?" Harry sighed.

"A Yeerk is an alien. A slug-like parasite that enters your head through your ear, surrounds your brain, and takes control of you," Jake said, flatly. "They are working on taking control of Earth."

"And why were you 'hitching' a ride with them?"

"We knew they were going somewhere, but didn't know where. Last time . . ."

"Last time we did that, we were nearly killed by polar bears, crazy ice monsters, Yeerks, and extremely cold weather. Why we took the chance again, I don't know," interrupted Marco.

"Who are you?" asked Snape.

"We're the Animorphs."

"The what?"

"Teenagers with a death wish," answered Marco.

"How do we know you aren't making this up?"

"What would we get from making this up?" Jake asked. "Nothing. Now, we have a mission to do, so we would greatly appreciate it if you would let us go so we can do what we came here for so we can get home."

"How old you are?" Dumbledore asked.

"Fourteen," Jake answered.

"So, you are telling us that six children are fighting against these . . . Yeerks? Who else?"

"No one."

"You are too young . . ." McGonagall started.

"There is no one else."

"Why haven't you told anyone, then?" sneered Snape.

"Who can we tell? They can be anybody. They are everybody. The vice principal at our school, my brother, the police. We don't know who we can trust."

"Then what makes you think you can trust us?"

"Because if we couldn't, we would be dead by now, sir. If you were Yeerks, we would either have been killed on the spot, or brought to Visser Three and tortured."

"Visser Three?"

"He's ahead of the operations on Earth."

"Yeah, and he's not very nice. In fact, every time we go near him, he tries to kill us with some odd morph," Marco said sarcastically. Suddenly, an alarm went off.

"Albus what is that?"

"That, Minerva, is an alarm saying that young Harry Potter is injured."

"Already? He's been home for what? A few hours?" Snape sneered. Dumbledore sighed.

"Will you check up on him, Minerva? I enhanced the wards. I don't believe it is Death Eater business. There would be many more alarms going off if it were." McGonagall nodded, then left the office. The animorphs looked confused at the headmaster.

"Now, where were we? Ah, yes. And what is it that you need to do?"

"What, our mission?"

"Yes, what else?" sneered, once again, Snape. Jake sighed again.

"We need to stop The Sharing from opening a branch in London. The Sharing is a front for the Yeerks to try and get willing hosts."

"This isn't good. Would you like any help?"

"We could always use help. But I doubt you could."

"A place to stay until we are done would be nice. I don't know about them," Rachel said, pointing to the rest of the Animorphs, "but it would be nice to have an actual bed to sleep in, instead of . . . something else."

"That can be arranged. I do believe headquarters would work, and it would definitely be safer. Everyone is leaving here tomorrow, since the term just ended."

"Headquarters?"

"I do believe there is a lot you don't know. Knowing the burden you currently have on your shoulders, I assume you can keep a secret?"

"Duh," Marco said.

"Hogwarts is a school of Witchcraft and Wizardry."

"Wizardry . . ."

.:What is that:. asked Ax.

"Magic." All the animorphs just stared at the headmaster.

"First aliens invading the earth. Now magic. This is insane! Will we never have a normal life?"

"Marco, we are far past normal," snapped Rachel.

"Your war with the Yeerks is not the only war going on. The tale is a little long for right now, but if you have specific questions, I will answer what I can," the headmaster said as an owl entered through a window. The owl landed next to Tobias, who seemed greatly irritated.

.:What is up with all the owls:. he asked with some contempt.

"What, bird-boy doesn't like owls?" Marco teased. Tobias seemed to glare at Marco. It was hard to tell, since Tobias' hawk face didn't change much.

.:Owls are nocturnal. I am not. I prefer not to deal with them.:.

"Do you live as a hawk?" Snape asked. Tobias switched his attention to the potions master.

.:Yes:. he answered simply. Everyone was silent as the headmaster read the note the owl brought.

"We will be going to headquarters immediately," Dumbledore said, walking to the fireplace. We will be traveling by floo."

"What is floo?"

"Fireplace."

"Huh. Okay, I've come across weird stuff before, but this magic stuff is kinda over my head," Marco complained. Snape snorted.

"Just toss the floo power in, say 'headquarters', and step in. Severus, if you would go first. I do believe Minerva has already arrived with young Harry."

"What happened."

"I do not know, Severus." Snape glared at the headmaster, took the floo powder, then stepped in. He disappeared immediately. The human Animorphs gaped at the sight.

"What if something happens?" asked Cassie.

"Don't worry, nothing will happen." One by one, each animorph, both Ax and Tobias in human morph, stepped through the floo to the Order of the Phoenix headquarters.