Weight of the Universe

By: Mad Eye Maddi

Plot: The Doctor and Rose come to the Harry Potter universe, and take on the post of DADA teachers in Harry's fifth year at Hogwarts. They fight against Umbridge in their own way, and help Harry and the DA escape all of her plots of ambush.

And Harry Learns that the Weight of the Wizarding world on his shoulders a nothing compared to the weight of the Universe resting on the Doctors.

Authors Note: I Love Doctor Who and Harry Potter and couldn't resist following the crowd and mashing them together…Hope ya like it, I had fun writing it. Oh, and please review because reviews are the 'Bricks in the wall of your education'.

Disclaimer: I own nothing, I wish I did but I don't…if I did I would be rich, and old enough to get a license. Oh curse the misfortune that is being fifteen LOL.

-CHAPTER ONE - You Got Yourself Some Teachers-

Night had fallen over the city of London after another cold and wet Thursday. Tonight was the twenty-fifth of August, two weeks before the start of term for the students of Hogwarts. Tonight was the night that the Chudley Canons shocked everyone by winning their match against the Tornados. And tonight was the night that the Order of the Phoenix got two new…very odd, reinforcements.

It was seven o'clock on the dot when a great dirty house rose out of the ground in between numbers eleven and thirteen Grimmauld Place, seemingly out of nowhere. As soon as it was back to full size, a group of four men walked out.

A tall old man with flowing silver hair and beard lead the group over the road and into the grubby square of Grimmauld Place, London. Stepping over a knee high fence without breaking their quick stride, they walked into the middle of the concrete slab, and the old man rose what looked like a silver cigarette lighter that ironically enough, sucked in lights.

He turned to the nearest lamp, and with a click the light raced into the small cylinder. He repeated this several times until the square was cast into darkness.

"When is this guy supposed to turn up Professor?" asked Sirius Black, dark hair blowing wildly in the wind and whipping into his face.

"Why, do you want to go back inside already Black? To much action for you?" sneered Severus Snape from the other side of the Headmaster. Black robes billowing behind him, and pale skin almost glowing in the dark, he looked like the sort of person you didn't want to mix with in these circumstances, but then again…Sirius was also.

He stormed up angrily to the potions master, who smiled smugly as Remus Lupin had to grab his friends arms from behind, and drag him back.

"Restrained by a Werewolf, how embarrassing," he sneered again, having too much fun to pay attention to Dumbledores warning glance.

Remus rolled his eyes irritably and muttered to his old friend, "It's not worth it Sirius, you'd be giving him what he wants."

"Than let him think of it as an early Christmas present!" growled Sirius, glaring furiously at the greasy haired man, but doing nothing else.

Snape smirked and said coolly, "Oh finished throwing your tantrum have you?"

"Severus," muttered Dumbledore, giving him a hard warning look.

"You know Remus, I think one of the reasons that he likes Potions is because he get to fiddle with brains bigger than his own," announced Sirius loudly, grinning gleefully at the look of outrage that Snape shot him.

"Sometimes I regret not just going to these sort of things alone," announced Dumbledore, mostly to himself.

Both Sirius and Snape crossed their arms over their chest, refusing to look at each other, while Remus, placed his hands into the pockets of his rather shabby brown robes, and sighed.

After a rather ferocious internal battle, curiosity got the better of Snape, and he muttered as quietly as he could, "When is this friend of yours supposed to appear Headmaster?"

The whisper was apparently not uttered quietly enough because Sirius snorted derisively and Remus grinned.

"He should be here any minute Severus," responded Dumbledore.

Just then, there was a loud whirring, and the shadow of a blue box appeared just in front of them. The three younger men yelped and jumped back in surprise, and Dumbledore smiled, eyes twinkling in amusement as the often do.

The whirring got louder and a big, blue, wooden Police Box appeared in the middle of the square.

Dumbledore stood back two steps, and the door of the box swung open where he was just standing, and a odd man wearing a brown pinstriped suit bounded out, holding the hand of a young blonde girl.

The Doctor and Rose were lying on their backs on the grate floor of the TARDIS laughing their guts out…again.

The Doctor was the first to get up, jumping to his feet in excitement he ran to check the dates on the control panel, to ensure that he had indeed not landed them in the middle of the battle of Waterloo or something close to it.

Rose picked herself off of the ground also, and stood next to the Doctor, asking in a bemused voice, "Are we in the right century, or the wrong century and right year?

The Doctor grinned triumphantly and replied, "Ye of little faith. For your information Rose Tyler, we even got here in the right minute…besides, 1875, 1975, same difference."

Rose scoffed and retorted, "It's a hundred years difference."

From down the hall where he was fetching coats, the Doctor called, "Well, what's a century here and there really?"

Rose rolled her eyes and decided to let her friend continue on with his warped version of logic. The Doctor came back into the control room, carrying with him her jacket and his own coat. He handed her jacket over and began to pull on his coat when a question popped into Roses head.

"Doctor, where are we going again?"

He grinned and answered cheerfully, "A friend of mine from my last regeneration, needs help defeating an evil Hitler like Wizard, who is trying to kill his students…Well- one of his students- Well! He'll settle for all of them if he has to, but this one student in particular."

"And what world exactly is this?" asked Rose, bemused at the whole Wizardry thing.

The Doctor grinned wider still and answered, "You ready for a shock Rose? Late Twentieth century…Earth. Yeah, there's Wizards on Earth. Ha- a whole different world that most of the population doesn't know about, it's fantastic isn't it."

Rose closed her mouth, that had been gaping open after the Doctor revelation, and asked in confusion, "But if there was an evil dictator, wouldn't everyone know about it? I mean, wouldn't he kill everyone, not just Wizards and stuff?"

"Rose Tyler, when are you going to work out the Human race? If you don't want to believe something, or don't understand it you will just brush it off as something average and minor. It's like the Slitheen situation, remember? I believe the Muggle story was there was a killer virus going around."

"Muggle?" asked Rose, frowning slightly, not knowing whether she should be insulted or not.

"Um, non-magical people," corrected the Doctor hastily, thinking that she would take offence to the term.

Rose shook her head smiling and replied, "I'm never going to get used to this you know."

The Doctor grinned and held out his hand for her to take, which she did happily, and then he led the way out of the TARDIS.

When they stepped out of the door, they came face to face with a very odd group of people.

The closest of the four, and the only one of them who didn't look shocked at the way they had appeared, was an old man with long, flowing, silver hair , beard and moustache, that billowed in the wind with his violet robes.

A couple of paces behind his stood a group of three younger men. In the middle stood a brown haired man, wearing rather shabby looking robes that looked like they had been repaired many times before. The man also had a set of scratch scars down his face, but he smile none the less.

On either side of him were two black hair men. One with greasy shoulder length hair, and long black robes that contrasted with his pale skin and billowed finely in the wind behind him.

The other also had black hair, but it was decidedly less greasy and more messy. He had side burns longer than the doctors, and was wearing a waist coat under his set of dark robes. He smiled also, but slightly less gently than his friend. Rose wondered what had happened in his life to cause that hardness.

The younger men seemed to have almost recovered from their shock, because the two black haired men glared loathingly at one another and then looked off in separate directions and the shabby robed man took a couple of steps forward to stand next to the old man, who appeared to be the leader.

Rose and the Doctor both smiled at the group and then turned back to the leader.

Dumbledore eyes were twinkling happily and a large smile had spread across his face. He turned to the Doctor and asked inquiringly, "Doctor, would I be right in assuming that you have regenerated since our last meeting?"

The Doctor smiled and answered, running a hand through his hair awkwardly, "Well, yeah- I sort of got killed and being a Timelord like I said…" he trailed off, but added hurriedly as he remembered the conversation that he had had ten years previous, "It's nothing like Horecruxes, don't worry."

Dumbledore chuckled, and replied, "My boy, you are not the sort to kill to save your own life…quite the opposite I believe."

The Doctor smirked at being almost eight hundred and twenty years older than the man standing in front of him, but he could still be made to feel like a child.

Dumbledore smiled also, and sighs, "It appears that I still have this ability to myself seem older no matter what circumstances, and I must say it can be quite a burden, because then people expect me to act it."

The Doctor stuffed his hands into his pockets, and replied offhandedly, "Oh you never want to act your age. God, if I acted my age, I would be all serious and grumpy, and I wouldn't like rock concerts…or Bananas…Nah, I will always like Bananas, Bananas are good."

Rose giggled and shook his head, remembering when the Doctor came back from pre-revolutionary France, yammering on about how you should always bring a Banana to a party.

Dumbledore notices her, and smiled politely. He held out his hand and said apologetically, "I'm sorry, I don't believe we have been introduced."

The Doctor jolted suddenly, and answered hurriedly, "Sorry Rose, Rose Tyler meet Albus Dumbledore, headmaster of Hogwarts school of Witchcraft and Wizardry and leader of the Order of the Phoenix. Albus Dumbledore, meet Rose Tyler."

Rose took Dumbledores hand, and couldn't help but feel that he was remarkably similar to the Doctor. "Nice to meet you Headmaster."

"And you miss Tyler," replied Dumbledore, smiling at Rose like he would one of his pupils.

It appeared all of the younger men had they same idea at once, because there was an odd outburst of coughing and throat clearing.

Dumbledore shook his head and signalled to the others. "And I would like you two to meet my companions." He walked up to the greasy haired man and said, "This is Severus Snape, he is our Potions master and our insider from Voldemorts camp if you will."

Snape gave then a curt nod and then Dumbledore moved onwards to the brown haired man standing next to him. "This is Remus Lupin and he is our Werewolf insider."

Remus smiled warmly, and the Doctor asked interestedly, "Are you a Werewolf?"

Lupin went slightly red, and replied, "Yeah, since I was seven."

The Doctor grinned and said happily, "We met a Werewolf once. He wasn't a very nice guy, tried to bite Queen Victoria and kill Rose and me, but you seem much nicer."

Lupin grinned, a little perplexed but grateful for the man not jumping back in disgust or terror, like many have countless times before.

Dumbledore smiled once more and walked over to the last man and stood next to him. "And finally, this is Sirius Black…he is the owner of the house we are using as headquarters."

"But I can't do much more than that," announced Black bitterly.

"Why not?" asked Rose curiously.

Black looked up at her, and answered, "Because almost everyone thinks I'm a ruthless mass murderer who worships Voldemort."

Rose looked confused, as did the Doctor, so Black elaborated. "I was given the key to defending my best friend and his family, but then we tried to trick Voldemort by giving it to another one of our friends, who turned out to be a traitor, and James and Lily were killed. Then when I tracked down Peter the next morning, he fired a curse that killed thirteen people and then made it look like I had done it. I spent twelve years in Azkaban, before I escaped…and now I got wizards and muggles looking for me, I'm not that useful."

Rose looked at him sympathetically, and said quietly, "I'm sorry." This must be why he is so frosty.

Black smiled, and said as carelessly as he could, "Well it's all in the past."

The Doctor frowned slightly and asked, "Um- why did you call us in the middle of a magical war, if Rose and I have no harnessed magical ability?"

Dumbledore smiled, and answered, "That's easily fixed. I need to ask you a favour."

The Doctor nodded, and Dumbledore continued. "I need you to assist Severus and Minerva, and all the other teachers, keep the children safe from the ministry this year."

Rose and the Doctor exchanged startled glances and asked in unison, "The Ministry?"

Dumbledore sighed and suddenly looked a lot older, and more tired. He replied sorrowfully, "The Ministry and most of the Wizarding community have decided to ignore Voldemorts return rather than face it. They have come to the conclusion that Harry is an attention seeking child, and I, as you would say, have a couple of wires loose."

The Doctor was looking grim at the revelation, and Rose asked still confused, "But, why do the students need protecting?"

Lupin continued were Dumbledore had left. "The problem is that the Minister reckons that Dumbledore is building an army of students to over throw him and take control of the Wizarding world."

Rose scoffed and muttered to herself, "It sounds like it's your Minister who has some wires loose."

The Doctor continued, "A government is made out of average humans Rose, and when Humans get scared, they lash out at whatever…or whoever in this case they feel is fuelling the fire."

"Precisely, and there will be a large percentage of students who stand up against the ministry member that they are going to send this year to supervise the school, and we all know that it is only a matter of time before I am over-thrown myself. I need as many trustworthy people in the school as possible, and if I don't find a teacher soon, the students won't be able to defend themselves when the time comes , because of Cornelius's paranoia. That is where you two come in."

The Doctor cocked his head to the side questionably, and asked, "You want us to teach at your school?"

"Exactly."

Rose stared bewilderedly, and asked, "The two of us?"

Dumbledore stroked his beard thoughtfully, and said, "Ah, well I wasn't expecting two of you, but we could say that you are a student teacher that will be studying here for the year."

Rose grinned, but then the Doctor commented, "I'm still drawn to the problem of our lack of magical ability?"

Dumbledore gave the pair one of his all-knowing smiles, and Rose felt another wave of familiarity wash over her. He really was a lot like the Doctor.

"Like I said, that is easily fixed. Now please stand really still, Doctor, for once can you not ask questions until I'm finished, try to remember that last time you talked through a spell I cast on you."

Rose turned in time to see the Doctor hurriedly close his mouth, and stand stock still. Making a note to ask him later exactly what happened to him, she took a couple of steps back so she was standing with the other three men.

She watched as Dumbledore walked up to the Doctor, and took out an odd stick looking thing.

Her question was answered before she asked it by Snape, who whispered in her ear so that the others couldn't hear, in a soft voice, "It's a wand. They have got cores of magical creatures inside them, which makes it powerful for the chosen user."

Rose nodded and gave him a friendly smile of thanks, before turning back to the Doctor and Dumbledore, who was twisting his wand over his head, and then pointing it at his own chest for a second or two, before returning to circles above the Doctors head.

For around ten seconds, Dumbledore did a twitchy sort of circle and then, suddenly, he brought the wand down hard on top of the Doctors head, causing him to flinch.

"All finished," announced Dumbledore, smiling as the Doctor rubbed the spot on his head that had been hit by the wand.

"Ow…that hurt," he said in a whining voice.

Rose walked over apprehensible, and Dumbledore began to make circles above her head also. The Doctor watched as Dumbledore cast the spell on Rose also, and was very put out when Dumbledore only tapped he lightly on the head at the end.

"How come you whacked me over the head with it?" asked the Doctor, still rubbing the forming bump.

"Oh come on Doctor, be a man," teased Rose, walking up to him.

"Alright. What I did was cast a spell over you, harnessing your magical ability so it can be used, then I imparted some of my knowledge of magic for you to use, which I dare say, is saying something."

Rose and the Doctor smirked, and Dumbledore carried on.

"You probably didn't feel any different, because my second spell has also given you control over you powers. However if I were to give you this-" Dumbledore passed the Doctor his wand. "-and ask you to conjure up a chair for me, you will find that you know how too."

The Doctor frowned in curiosity, then smirked slightly before swishing the wand down and concentrating hard on what he wanted the seat to look like.

Dumbledore watched in amusement as a fluffy pink chair, with feathers and a pair of fairy wings sprouting out of the back formed in front of him. The words 'property of Albus Dumbledore' stitched itself into the back of the seat, and Rose, Lupin and Sirius laughed, with Snape only cracking a smile.

Dumbledore took his wand back and said in a mock stern voice, "I think that is enough magic for you."

The Doctor grinned and turned to Rose, "You want to be teachers for a year?"

Rose grinned also, and replied cheerfully, "Sure, as long as I'm not the dinner lady again."

The Doctor turned to Dumbledore happily, and announced, "Headmaster, you've got yourself some teachers."