The Dresden Files is owned by Jim Butcher. RWBY is owned by Rooster Teeth. I own nothing.

Takes place after Dresden Files book Skin Game and between RWBY Volumes 2 and 3.

Chapter 1.

Professor Ozpin gazed out of his office window at the city of Vale. Over the years he had nurtured the city and its inhabitants, although, most of the people living in Vale had no idea how much he had done to protect them and the world of Remnant as a whole, and to his hope never will

It was so long ago, he reminisced, when he came to this magically abundant world. At the time he had been so frustrated at his previous world and convinced of his own power… Especially when he had tasted the available magic permeating the entirety of this world. Magical power in such quantities that it spontaneously coalesced into crystals that anyone could touch. He felt he could be this world's protector and could eliminate the foul corruption infesting this world. The corruption spawned from this world being so much closer to the Outer Gates that the power of the Outsiders would seep through and manifest itself, what this world's inhabitants referred to, as the creatures of Grimm.

To be fair, he had saved a lot of lives then. No creature of Grimm could stand up to him. He laid waste to thousands of Grimm, but he was just one man. No matter how powerful he was, he couldn't be everywhere. For every settlement he saved, many more were lost, even with the help of the occasional silver eyed warrior.

The silver eyed warriors were quite something, before he arrived on Remnant they were the only real defense the people of this world had. They were able to channel so much of this world's power into themselves, able to perform feats of strength and speed, not to mention energy manipulation, that staggered even him, thereby making themselves into the lords and masters of the battlefield. But they too were far too few in numbers to be able to cover the whole of humanity on this world. And, worse yet, their numbers were dwindling.

He had taken the fight to the Grimm time and time again but he too could not be everywhere. Eventually, it was the overwhelming sense of impending doom… That nothing he could do could stem the tide of Grimm… That eventually caused him to isolate himself from the rest of humanity and become a hermit.

Those were dark days, indeed, Ozpin thought to himself. So utterly depressed and bitterly cursing the decisions that caused him to abandon his world and relocate himself to this one. If it wasn't for those four girls searching him out, for they had heard of his power and, he had never quite understood how, knew about his depression.

If he was in his old world, those four young women would be remembered as Christian Saints, he thought ruefully. They were determined to care for him and bring him out into the world again, whether he wished for it or not, for he had not been the most cooperative of individuals either. Many times since those dark days he had wondered how they had weathered his constant sour disposition.

Eventually through their patience, kindness, courage, and understanding they had brought him back into the world, He still knew of the futility of trying to be the sole protector of this world and try as he might, the solution was ever elusive. Until he realized that the four young women that cared for him, and he for them, were also the solution to his problem.

Those four young women had power, as did most of the people of Reminant. Very few, if any, individuals had the ability to call upon the Sight, and therefore could not become practitioners of the art themselves. However, probably as a result of living for generations on a world so saturated by magic, there were individuals who could draw upon the world's magical energy into themselves and strengthen their aura into a shield around their body. It was rare for someone to be able to do it naturally, but, he thought it might be able to nudge someone's aura into alignment with the magical flow.

In his youth Ozpin had known the Archive and her roll in his old world. He had made a study of the Archive's magic and knew more about it than anyone still alive save the Archive herself. With his knowledge of the spell that made the Archive what she was, he created four magical constructs and focused it on his four friends. In each construct he created a conduit between the woman and the magic that surrounded Remnant, much like the conduit that the silver eyed warriors had innately.

Unfortunately, the women could not handle as much power as the silver eyed warriors, but it was quite substantial none the less. He also began teaching them about the abilities they possessed and to align someone's aura with the world's natural energy.

With this method Ozpin produced the protectors he needed to safeguard humanity. Where once there was only a few silver eyed individuals, there was now an army of individuals with the skills to go after all but the most dangerous Grimm and succeed.

Throughout their lives, the four women remained pure of heart and a credit to humanity. Not once did the power he instilled within them color their perceptions of the world. To his sorrow, he knew, regardless of the power he instilled within them, they were still mortal. He, therefore, built into each construct the ability to seek out new individuals strong enough to withstand the power the gift bestowed in the host, in the event that the previous host died.

He liked to think he repaid those maidens with the ability to protect themselves and those they loved against the Grimm and any other threats of this world. In his darker, more cynical moments of self-reflection, he thought of himself as a right bastard for effectively turning them into weapons of war.

Over the centuries, while most of the bearers of his magic proved to be worthy, some fell to the corruption such power tempted. Those bearers abused the power and had caused Ozpin no end of problems. Eventually, those bearers had to be dealt with, to his sorrow.

One thing was fact, though, the introduction of Hunters and Huntresses had allowed Humanity to survive and even turn the tide in the war against the Grimm. Over the past centuries Humanity's numbers had grown and the Grimm had been steadily pushed back.

Unfortunately, Ozpin knew, this couldn't last forever. He had a feeling something was brewing. He had seen signs of some hidden hand in the world. Someone manipulating events to a goal he didn't know but feared. He saw it in the increasing amount of Dust heists over the past several months. Someone was stockpiling Dust since, to his considerable knowledge, none of the stolen Dust had made it to the black market. He saw signs in the odd behavior in the White Fang. The group of Faunus dedicated towards equality becoming belligerent and dangerous. And, he saw it in his friend, General Ironwood, who had grown distrustful towards him as of late and had obtained the favor of the four nations…

Ozpin's eyes wondered over to the giant battleship hovering over Vale. He disliked having the battleship there. He knew the effect it would have on the moral of the people in Vale and he knew how that unease would attract the creatures of Grimm. He knew the effect would be slight now and only be seen as a small increase in Grimm activity out by the boarders of the city. He also knew how easily that small bit of fear could be the spark that would ignite a panic in his city and bring the Grimm down on them in vast numbers.

Despite his misgivings and arguments with Ironwood, he still liked the man. Personality wise, he reminded Ozpin too much of himself in his younger years… Too ready to carry the weight of the world's protection on his shoulders… He also had to admire the man's resolve. Ironwood didn't have the innate ability so many others of Remnant had to manifest their magical aura into a shield, let alone have his own Semblance. However, through raw determination, Ironwood had risen through the military ranks to become the leader of Atlas.

It had cost the man dearly, though. A good portion of Ironwood's body had been replaced with cybernetic implants after numerous injuries that would have killed anyone who didn't have Ironwood's pure stubborn determination.

Ozpin, wresting his mind away from his musings of the past and current political issues, turned away from the window and went back to work, he had students to train. He was worried, though, they were all young. To top it off he had, at least, found one of the few remaining silver eyed warriors, but she too was just a child, at 15 she was two years younger than anyone else that trained at Beacon academy. Fate, it seemed, had plans of its own for he also had found a young woman who had all the makings of an excellent replacement for the Fall Maiden. He only prayed it was enough.

Lost in his musings, Professor Ozpin, almost didn't register the incoming call on his desk. Quickly hitting the receive button, he saw a video of his assistant and vice Headmaster, Glynda Goodwitch.

"Hello Glynda," he said, "is there a problem?"

"Professor, there is a Donar Vadderung here to see you. He doesn't have an appointment but he insisted that you know him and you would want to talk with him."

Ozpin quickly opened up another window on his desk and viewed the security footage of his newest guest. Donar Vadderung was a big man… Imposing really… Well-muscled and possessing a face that had seen many battles. There was a scar over one eye only partly covered by an eye patch. In his hands he carried a rune carved spear.

He may not have recognized the face or the name, but he knew that spear all too well and he knew who the owner must be. "It's alright, Glynda. Please send him up… and, if you would be so kind, please send for some tea." After a second of thought he added, "Use the tea from my private collection to. The red jar in the upper right corner should do nicely."

Glynda nodded and ended the call. Ozpin sat down at his desk and cleared it of any open files. Not that it would do much good if his guest wanted to know something, he thought ruefully, but he wanted to give his guest his undivided attention.

After a minute the elevator bell dinged and in walked his guest with Glynda in tow. It was obvious to Ozpin that Glynda had come to the conclusion that there was something wrong with their guest and was none too happy to have him there. It was equally obvious that Donar Vadderung had sensed this and just didn't care. All things considered, he thought, not a bad reaction but it might be a good idea to do something about this.

"Glynda, my dear, thank you for escorting Mr. Vadderung to my office but I need to talk to him in private. Please send up that tea when it arrives."

At this Glynda gave him a surprised look. "Of course… I will be just downstairs if you need me."

Glynda had been his closest ally and confidant over the past few decades. Ozpin remembered when she first arrived at Beacon. She was so serious and so determined. Those qualities had not lessened a bit since then. She also knew most of his secrets… Not all though, and this conversation would need candor and go into areas he wanted to make very sure no one knew of.

Once Glynda left he turned to "Donar Vaderung" and smiled.

"Welcome back to the world of Remnant. It has been a long time since I last saw you here."

"A long time for you, an even longer time for me," Vaderung replied. "The world you once knew has changed a great deal. Almost as much as this world has changed since I first brought you here and away from the White Council's area of influence."

True enough, thought Ozpin. He had been a member of the White Council in his youth, and one of the few people alive, even then, to have talked with the legendary Merlin. Ozpin had, in fact, been trained by one of Merlin's students.

After Merlin's disappearance, he saw the White Council devolve into political intrigue and was disgusted. He recognized the early signs of complacency settle around too many of the members who wanted to keep the comfortable status quo and not enough people willing to step up and do something about the problems in the world. And when someone tried to enact some real change within the world they would get all kinds of pressure to "not rock the boat" from the rest of the Council.

It had been then that a young and frustrated Ozpin was approached by the being across from him and was given an offer. He knew of a world different from the one he currently lived in. A world that needed help lest it fall to the Outsiders influence and the world itself be dragged beyond the Outer Gates. If that happened, the Outsiders would gain that much more power to bring to bear on the Outer Gates themselves and make the defenders job that much more difficult.

"You have done well in preserving life on this world," Vaderung said, stepping up to the windows and looking out to the city. "I must admit, some of the advances here have been intriguing."

"You also appreciate all those candidates for Einherjar and Valkyrie." Ozpin said with a slight nod of the head

"You are correct." Vaderung replied with a grin. "I can always find a place for fallen warriors of the caliber found in this world."

"So what can I do for you," Ozpin said after a brief pause. "You have occasionally sent emissaries with news of my home world and requests. However, I don't believe you have actually come yourself since you left me here all those years ago. That suggests you need something and it might be something big. I will warn you up front that things are not as peaceful as you might think. There is something going on in the background that threatens to undo all of my work stabilizing this world."

"You and I have that in common, it would seem. There has been some unusual activity in the supernatural community over the past decade and a half," Vaderung said as he turned to look at Ozpin. "It started off with small things. A rise in wizards turning into warlocks that is slightly larger than the population growth statistics would account for. These warlocks also tended to be a bit nastier than they should have been. On top of that the Wardens have all but stopped giving trials for warlocks and going straight to the beheading."

Ozpin winced at that. "The warlocks are concerning, of course, but to bypass even a show trial alienates the less gifted of the magical community. Thereby making the job of catching and training gifted individuals before they make the poor decisions that turn them into warlocks even more difficult," He mused.

"It gets worse," Vaderung continued. "Events conspired to cause the Red Court of Vampires to declare war on the White Council. The White Council held on, barely, fighting with an almost completely defensive strategy and hoping for a diplomatic solution, while the Red Court whittled down their numbers."

"Which, in turn, made it even more difficult to catch warlocks," Ozpin replied.

"Exactly," Vaderung agreed. "Now where it gets interesting is that the Senior Council had their emotions and desires influenced towards that defensive strategy I mentioned earlier and add in that there were Outsider sightings fighting with the Red Court."

Ozpin sucked in a breath at hearing that. "That means the Adversary is making a move and openly as well. I have a suspicion that it might be involved in my own current troubles but to move so openly on earth is disturbing in many ways, but you just described the war in the past tense. What was the resolution?" Ozpin asked, fearing the answer.

"The Red Court has been wiped out. There may be one or two vampires left but even I have not been able to find them with my resources."

Ozpin blinked at that response. "Well I can't say I feel really sorry for the Red Court. I never did care much for them but you said the White Council wanted a diplomatic solution. What happened to have every vampire hunted down and killed?"

"They weren't hunted down. The Red King and his inner council thought it was a good idea to prepare a bloodline curse and powered it by about three days straight of sacrifices. Just as they were about to fire off the spell it was redirected to the youngest member of the Red Court itself," answered Vaderung.

"And one more thing, both Summer and Winter Ladies have been taken over by the Adversary. The Summer Lady almost brought the Sidhe courts to war with each other and, later, the Winter Lady almost attempted a jailbreak from Merlin's island prison."

"At the center of all this has been one individual. You would like him. He, first, stopped an addictive drug that forcibly opened up the Third Eye in any who took it. Proved the Adversary had taken over the Summer Lady, although he didn't know it at the time, and killed her before the war between the courts could do any real damage to the mortal world. Prevented a rite of assention of someone who, I suspect, is a pawn of the Adversary. Was the person involved with redirecting the bloodline curse to the Red Court. And, finally, was made Warden of Merlin's Island and prevented the Winter Lady's jailbreak attempt. He has, also, been a thorn in the side of many supernatural predators, was made, and currently is able to, control the mantle of the Winter Knight, and has been gifted with both soulfire by an Archangel."

"That is quite the resume," Ozpin stated after a brief pause while he absorbed what Vaderung just said. "It sounds like 'the powers that be' have handed you a champion. I wish I had that comfort here but I have yet to see anything but a few vague signs."

It was at that moment that Glynda arrived with the tea. Both men fell silent as she brought the tray over. Ozpin used this time to adjust to all he has just heard.

"Thank you, Glynda," he said.

For her part, Glynda had been with Ozpin long enough to read the trouble on his face and gave him a concerned look. This helped to alleviate Ozpin's mood a bit. The two of them had been together at this school long enough to do a lot of communication without actually talking. Ozpin smiled at this and Glynda nodded her head and left.

"Please help yourself to a cup. I have found that there are some quite excellent teas on this world," Ozpin said.

"Thank you," Vaderung replied as he got up and poured himself a cup.

The brief lull in the conversation had given Ozpin time to digest all the info he had heard and the conclusion he had received wasn't a good one. Well, he thought, I might as well get straight to the point.

"Have you seen any Grimm yet," he stated.

Vaderung's eye darkened briefly as he said. "Not yet, but it is only a matter of time I fear." His attitude became more sober as he continued. "War, warlocks, the seasons nearly breaking their cycles, and other such problems has caused quite a lot of negative emotions in the world. Add in the power available from the Ladies and there might be enough of a conduit to start bringing Grimm onto Earth. Once that starts, the fear and confusion will only exasperate the issues, bringing more Grimm."

"And if not stopped, Earth might fall past the outer gates," Ozpin continued. "And if Earth falls the pressure on Remnant would get much worse. Remnant is only barely holding on as it is. It would only be a matter of time before we would fall as well." Ozpin concluded.

"Unfortunately, I have very few Huntsmen I could spare for a long term assignment like that."

"I can help with the length of the assignment, at least," Vaderung replied. "There is already the time dilation between our two worlds I can abuse. Since very few even know of Remnant, I can also move a group through time a little with an acceptable risk of not creating a paradox. I could bring a group back within a few days of leaving regardless of the length of the assignment."

"That would help," Ozpin said. He then grew quite as he thought. Nearly all of his experienced Hunters were out on assignemnts that he couldn't get them away from quickly. He also realized that the time dilation cut both ways. As he was thinking, time was going past much faster on Earth. This problem needed to be responded to even quicker than he first thought. That meant that he needed to find Hunters he could trust implicitly around Beacon itself. This narrowed down his options drastically.

"Any Huntsmen I send would have a big problem moving around Earth and finding where the Grimm were coming from. They would need a guide. I assume you have someone in mind already?" He asked.

"I was thinking of introducing your group to the individual I mentioned earlier. He was a regional commander of the Wardens during the war with the Red Court and he survived as a supernatural Private Investigator during his professional life before obtaining the mantle of the Winter Knight. I thought a few Hunters would be useful in watching his back as he addressed this issue." Vaderung replied.

"Well then," Ozpin smiled. "I may have very few Hunters nearby I could send on such an assignment as quickly as you would need. However, this year's Freshman class, has quite a few talented fighters who could watch his back while he worked."

"They would be sure to gain some exceptionally useful experience working under someone of his caliber. Experience that could be useful in your own endeavors once they return here." Vaderung replied. "I can work with that."

"There is the problem of age though," Ozpin stated. "I don't want to send young Hunters and get back experienced, but old, Hunters."

"I think I can spare some of Idun's Golden Apples to slow the aging process while they are on this assignment," Vaderung replied. "My stockpile of those isn't what it used to be and they aren't as effective as they once were. They will slow the aging process for a time but they can no longer grant 'Immortality' and they can do nothing for injuries."

"Well then," Ozpin said. "I think I know of at least one team I can send. I can have them ready in an hour. I might even be able to send a few more if you give me some time."

"Let us start with what you have available now." Vaderung said.

Ozpin nodded to this, turned to his desk, and contacted Glynda's scroll. "Please have team RWBY meet me in my office immediately."

A/N: I hope you liked this. It is my first attempt at a Fan-fiction and story writing in general. Updates may be slow as I still need to do a lot of planning on what will happen and when before I can write much more of this.