Another idea floating around in my head, hope you all like it. I'm not abandoning any of my other fics. Still have a little writer's bloke for True Horror but hopefully I will get back to it soon.

Few things I have changed for his story that I will explain first.

Orochimaru still wants to be immortal, but instead of wanting to learn all Jutsu, he wants to create the ultimate shinobi. Basically a mad scientist deal.

Minato and Kushina are still alive, just because I'm nice like that :) (Cough bullshit cough).

Kyuubi isn't sealed in Naruto but his sister, yes I know I did it before but I like it so stuff you :p

The Itachi is still in the village and his mother is still alive with him and Sasuke.

I forgot, never mind, enjoy the fic :)

Summary- The day he was born, Naruto was taken from his parents and used for one of Orochimaru's twisted experiments to create the perfect human. Four years later he is found just after Orochimaru ran away from the village. The problem is that they arrived too late.

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Disclaimer- I own nothing :(

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Chapter 1- Sub-Zero

September 13

I have acquired a new test subject, or as he will now be referred to, subject 13. Because of the Uzumaki blood that runs through his veins I have high hopes for him and what I will be able to accomplish with him as a test subject. With the Uzumaki gift of healing and long life I am sure he will respond positively to the treatment, I am one step closer to achieving my goal of creating the perfect shinobi.

October 29

I have finished with my initial experiment, with the new drug I developed, formula 19; I was able to inject it into subject 13 successfully. He will develop into a stronger, faster human then ever thought possible. As he grows I will be able to monitor his progress and document the full extent of the effects it will have on his body.

November 13

I have decided to use subject 13 as a bloodline limit test, using the DNA I acquired from a shinobi in the third war from Mist. The key to the perfect shinobi has always been bloodline limits, and by perfecting the implantation process I will be closer to my goal. I can't be discouraged by the unfortunate lack of progress in the Shodaime's Wood style bloodline; I fear that road may be lost because of the rare nature it possesses. By using a different bloodline, which has been confirmed to have been passed on through several generations I hope that it will be stable enough to avoid killing the host.

December 15

The implantation is complete and so far there have been no signs of rejection, I am able to confirm the successful implantation of the bloodline into subject 13. His body has completely integrated the bloodline into his system; it is as if he was born with it.

December 23

I realised something today, why stop at just implanting a bloodline when I could enhance them as well. With my intellect I should be able to increase the power of a bloodline ten fold. Using subject 13 as a genetic template I will be able to create a new race of shinobi. I have high hopes for this project; I can only pray that the improvements don't kill him. This is all in the name of perfection, with my work I will create the next generation, and it will be better then the last.

June 2

I have finished a drug that should in theory be able to increases the potency of certain bloodlines. Now that it is complete I will start to administer the drug into subject 13's system tomorrow.

June 24

So far there has been no change to subject 13, I am wondering if I made a mistake somewhere in the formula. He isn't having a negative reaction but neither is he having a positive one either. If there is no change within the next mouth, I will attempt a higher dosage. It is risky, but sacrifices must be made in the pursuit of perfection.

September 13 (1 year since obtaining subject 13)

I fear I have made a terrible mistake. After there was no reaction to the first dosage decided to increase it by more then double the original amount in an attempt to provoke a reaction. But what I didn't realise was that the first dosage was already working, just slower then I first anticipated. By increasing it I have caused a huge over reaction. The effects are already starting to show but I still don't know what the long term changes to his body will be, but I will be sure to monitor it. The important thing is that Formula X works.

September 13 (2 years since obtaining subject 13)

The effects the drug has had on subject 13's body is inconceivable, it has gone beyond simply improving the bloodline. It seems the drug is actually changing his DNA on the fundamental level, causing him to become one with the bloodline. The ramifications of this are too numerous to count; I have successfully broken the barrier between human and chakra. The only problem with this is that I am no longer able to use subject 13 as a test subject because I am no longer able to touch him directly. The overuse of the drug has pushed the bloodline too far and it is too dangerous to approach the boy at this time, I have lost four lab assistants this mouth alone. He is currently being contained in a special room designed to suppress and contain his abilities but I am unsure how long it will hold him. His abilities are growing stronger everyday. The biggest problem through is that I fear sensei may be on to me, if he were to see what I have created I'm sure he would be impressed but the lengths I have gone to in order to accomplish my goal is something he would never understand. I will be the one to create a new era, a new superior race of shinobi that will outmatch the previous generation in everyway and despite what has happened with subject 13 I still have high hopes for him. He is the first of a new race, the first perfect human.

From this day on I have named subject 13 'Sub-Zero'.

XXX

Kushina was sat in the Hokage office with her two year old daughter sat on her lap next to her husband as he went through pile after pile of paperwork. Ever since proof of Orochimaru's treachery was found he had been dealing with so much paperwork he looked about ready to burn it with a Fire Jutsu.

It had been four years since their first born son, Naruto, went missing from his crib in the hospital. She had been so tired after the labour that and had fallen asleep, she didn't even notice someone come in and take her baby.

They had both been devastated when they were forced to call off the search parties, the thought of giving up on their son had torn them apart inside, but the village couldn't afford to keep looking like that and they had no other choice but to give up.

The decision always lay heavy on their minds, what if they had searched for just one more day, what if he had been right around a corner and they only just missed him. It was those thoughts that had plagued both their nightmares for years.

They still searched, but no to the same degree and as the years went by they had all nut lost hope.

It wasn't until little Madoka had been born that things started to go back to normal.

What had happened with the Kyuubi was unfortunate, but they loved her with all their hearts and just because she was the Jinchūriki of the nine tailed fox wouldn't change that.

She had blonde hair like her father, with the same blue eyes that Kushina loved so much. Her face was the same shape as the red headed kunoichi and on each of her cheeks were three whisker marks, the sign of the Uzumaki clan.

She was sleeping peacefully in her arms, not a care in the world, when the doors to the office were slammed open and in rushed an ANBU with a bear mask over his face. He was out of breath and Kushina was sure that if she could see his face it would be as red as her hair.

Looking up from his paperwork in slight surprise, Minato waited for the man to catch his breath before he spoke.

"What brings you to my office Bears-san, and in such a state? Did you find anymore survivors in the snake's lab?"

The ANBU before him was a part of the team led by Sarutobi into one of the most recently found labs Orochimaru had set up. Minato would have lead the team himself but the former Hokage ha asked for the responsibility, feel it was his duty as the snake's teacher to see all he had done.

Taking one last deep breath, the winded man stood up straight and addressed his Hokage.

"Hokage-sama, we found your son, we found Naruto."

The shock on both Minato and Kushina's faces was clear as day and the Bear masked ANBU knew a flood was coming.

"Are you sure?"

"Yes sir, I saw the whisker marks myself, there's no doubt it is him. Sarutobi is-"

The rest of his words were drowned out by the now enraged Kushina as she stood form her chair, a slightly scared and confused Madoka still in her arms as she screamed for all to her.

"THAT BASTERED! THAT NO GOOD, MOTHER FUCKING SNAKE!"

Before the ANBU knew what was happening he had an angry red faced Kushina yelling at him to tell her where they were.

"Sector 3, route 9, but there's something-"

Before he could get all the words out of his mouth, both Minato and Kushina had ran out the door towards where he had just told them leaving him alone in the office as he finished what he had been saying.

"... you need to know"

XXX

By the time they got their Sarutobi and the other ANBU that had searched the facility with him were just coming to the surface. Minato noticed that one of the men was being supported by another and that he was cradling his arm and if the situation was any different he would have asked for a full report on what had happened to him. But at that moment in time it was one of the last things on his mind.

Both Minato and Kushina held their breaths when they saw the last figure standing just inside the shadow of the hidden tunnel. They couldn't see his face, but from the size they could tell it was a small boy.

Handing their daughter to her husband, Kushina ran forward at a speed that would have made Might Guy jealous and was about to embrace the boy when she was stopped in her tracks by a withered hand grabbing firmly onto her shoulder and holding her in place.

Before she could ask what was wrong Sarutobi shook his head sadly, not meeting her eyes.

"I should have know you wouldn't listen to the man I sent to fetch you."

"What's going on, why did you stop me?"

"I'm sorry Kushina; if we had found him sooner we might have been able to stop this from happening. You can't touch him, I'm so sorry."

"I don't understand, what are you saying?"

Instead of answering, Sarutobi turned to the boy stood in the shadows and nodded his head for him to come forward.

"It's alright, there's nothing to be scared of."

The boy hesitated for a moment before slowly stepping into the light.

Both Kushina and Minato's faces paled.

XXX

The smell of decay was thick in the air as Sarutobi stepped into yet another of his ex-students labs. It was just like all the others, dark, damp and filled with equipment that he didn't understand the purpose for and wasn't sure he wanted to.

This one was set up more like a corridor then a room through, with what must have been hundreds of large tubes filled with a strange green liquid that bubbled as they passed. Floating in each tube was a small shrivelled thing that at some point might have been a human baby, attached to a cord implanted into their stomachs that connected them to a tank set above into the roof.

The aged Hokage couldn't help the sad look that crossed his face as he thought about how he could have stopped all this years ago. He had seen the signs, the look in his eyes that showed a hint of madness and unexplained disappearances but he didn't want to believe it.

He couldn't bring himself to see it and now hundred, if not thousands of innocents had suffered all because of his refusal to act.

Along with a group of ten ANBU he had stormed the labs, only to find Orochimaru was already gone and most of his research gone with him. After that they started to look around the facility, trying to find survivors of the sick experiments.

So far they had found 5, but were forced to kill 4 of them. The things that had been done to them too much for them to handle, they had begged for death, to be realised from their pain, Sarutobi had given it to them. It was the least he could do.

The only one that didn't beg for death was a young boy no older then 12. He had short brown hair with black eyes and an almost completely blank expression on his face. They didn't know why he was there or what had been done to him because from what they could see he was the most normal living thing they had come across in these godforsaken tunnels. After a few word Sarutobi had sent him up with one of the ANBU to the surface for medical attention just to be sure.

In one of the rooms they had passed he found notes about something named subject 13, which had gotten his attention when it mentioned Uzumaki blood. He read through the notes and by the end he could feel a deep sense of dread in the pit of his stomach, but pushed it down because they had work to do.

Leaving the room and moving on to the next, Sarutobi could feel his anger grow more and more towards the snake like man that he once thought of as a son. Room after room of mutilated bodies, bloody surgical equipment and detailed notes on the things he had done were everywhere.

He was about ready to burn the whole lace down when they came to a corridor that led to a large steel door with a thin layer of frost on it set into the wall. A desk full of papers had been set to one side and as he looked from it door he could feel the dread rising in the pit of his stomach at what might be on the other side.

Making his way over to the desk, the man once known as 'The Professor' started to read through the notes while the ANBU that were with him started to try and get the door open. He was about half way though a document that spoke of something call formula X when he was pulled out of his thoughts by one of the ANBU letting out a small scream of pain

Putting the paper down and making his way over to the man who was for some reason holding his hand in pain Sarutobi grabbed his wrist and looked to find his hand covered in blisters.

"What happened?"

"I don't know I just touched the door."

Before he could think of what this could mean the other ANBU had managed to get the door open and as they pulled the steel door away a thick white mist floated out with a hiss, filling the corridor they were stood in. Taking a cautious step forward, the ANBU right behind him, Sarutobi entered the room.

"What level of hell did that bastard drag this room out of?"

The old Hokage couldn't help but agree with that assessment. The room was like one huge freezer, the walls and roof were covered by at least a foot of ice, the light shinning from the florescent lights in the ceiling making it glow a brilliant white that hurt their eyes as they walked in. The floor was covered in the same white misted that they had seen when they first opened the door, making it to sees below their knees and at seemingly random points there was what looked like people, frozen solid with terror filled faces forever set in place. Some of them were on the ground huddled in fear while other stood and looked like they had been backing away from something.

As they made their way further into the room the mist seemed to be getting thinner and before long they could see all but their feet below their ankles as they came upon the form of a small boy sat in the middle of the room with his face buried in his knees. All he had on was a sleeveless white shirt with a number stencilled onto the left shoulder and a pair of black shorts.

He couldn't have been older then four years old, with a mess of blonde hair with white steaks and small bits of ice sticking to it where it had frozen. It stopped at his shoulders and hid both sides of his face from view. At first glance he appeared to be frozen solid like the other people in the room, his white, almost blue skin clearly visible on his arms that were wrapped around his legs, the slightly longer then average nails on the ends of his small hands a deep shade of blue that stood out from the rest of his skin.

Sending regretful look to the obviously dead child for not being able to save him they were about to turn away and leave the room when they heard and small voice whispering to itself.

"Cold, s-s-so c-cold"

Sarutobi's head shot around so fast that he was sure he had given himself whiplash and quickly made his way to the boy to take a closer look. When he was only a few feet away he was able to clearly see the boy was shivering.

Just as he was about to grab the boy and carry him out of the room to get warm something hit him, what if this was the boy from the notes he had read, he matched the description and if it was him they could have a major problem on their hands. Casting another look around the room at the dead bodies he could feel the same dread he felt welling up when he read the notes on the boy dubbed 'Sub-Zero' return in full force.

His hesitation confused the group of ANBU stood behind him and before he could stop him one of the men stepped around the Sandaime and made to grab the boy to carry him out.

"I've seen too mush shit tonight, and I'll be dammed if I let this kid die in here like this."

"No wait-"

But it was too late, the second his hand touched the boy he let out a scream of pain and started to back away from the small blonde. Stumbling his way to the door and out into the corridor, cradling the hand he had used to try and pull the boy to safety. Through the mist, which was still as thick as ever and didn't seem to be dispersing even with the door open they could all see his hand and let out gasps of shock.

From the tips of his fingers up to half way up his forearm it was completely frozen solid.

Turing back to the boy on the ground who hadn't reacted to them being in the room let alone what had just happened, Hiruzen tried to calm himself down before crouching down and trying to get his attention.

"Can you understand me?"

For a moment he got no reply and just as he was about to ask again he heard a small voice, so quite he almost didn't hear it.

"C-cold, so c-cold"

"Do you know where you are, do you have a name?"

"So c-cold"

"I understand, but I need you to talk to me. Do you have a name?"

He already had a good idea of who this boy was, he wasn't called 'The Professor' for nothing, but he needed conformation.

It was then that the boy lifted his head for the first time and again they all gasped at what they saw. Like his arms and legs the young boy's skin was so pale white it almost looked blue and on each of his cheeks they could all see three dark whisker marks. His lips were such a dark blue they bordered on black and the areas around his eyes were a shade darker than the rest of his face, making them stand out slightly with his eyes a deep, sky blue with white swirling around in them.

Yes, they all new that face, even if they had only seen pictures they all recognise the whisker marks a mile away.

This boy was the missing Naruto Namikaze, stolen from his crib the night he was born while his mother slept. There had been a massive search party that had lased three whole months before he was declared dead. Both Minato and Kushina had been so upset they had only gotten over their depression with the birth of little Madoka two years ago.

None of them were able to move as they looked into the pair of cold, blue piercing eyes fixed on the Sandaime, the only sound coming from the whimpering man still cradling his hand.

"S-subject 13, codename S-sub-Zero"

The boy's eyes never left the former Hokage's as they widened in slight fear and regret. Sighing to himself internally, Sarutobi took another step forward and went to touch the boys shoulder thinking that what happened to the ANBU was because he had surprised him but was stopped in his tracks at the next thing the boy said.

"I-if you t-touch me, you w-will s-s-s-scream, t-t-t-they always s-s-s-screamed."

Watching as the boy nodded to the corpses around the room Sarutobi stopped his hand barely an inch from Naruto's skin before he reluctantly pulled back, forcing the tears down that threatened to fall at the boy's words.

'So he gave you this power but didn't teach you to control it, you poor child.'

"Can you walk?"

"N-n-n-no point, he w-would just bring me b-back here again."

"Do you mean Orochimaru?"

"Sn-sn-snake man"

Nodding his head sadly Sarutobi spoke in as gentle a voice as possible.

"The snake man is gone; we're here to help you. If you come with us we can help you."

The small boy just sat there, eyes going blank when he heard Orochimaru was gone. They stayed silent for a while, Naruto seeming to have trouble understanding that his tormenter was gone.

Then they saw it, a small silvery tear falling out of the corner of his eye and falling down his face and leaving a trail of ice down his cheek. But what really scared them was what happened when it hit the floor.

The second it touched the ground the tear exploded out into a small pile of sharp, frozen spikes seeming to bloom like a flower as it grew to about a foot and a half before stopping.

Making a mental note to be carful around the boy Sarutobi started to lead the four year old out of his prison below the ground to the surface where without a doubt his parents would be waiting for him because of the ANBU he had sent ahead to inform the Fourth and his wife.

XXX

The moment they got over their shock at what had been done to their son, and they were a 100% sure it was their son with the whisker marks on his cheeks and the fact he looked almost exactly like a mini Minato, they rushed the still slightly frozen Naruto to the hospital.

At least they tried to.

The problem was that no matter how much Kushina wanted to pick him up and carry him in her arms she couldn't. They had been told what the room he had been kept in was like, the ice on the walls and the frozen bodies lying all over the floor along with Sarutobi telling them what had happened to the ANBU, who was already at the Konoha hospital, when he had touched him.

This meant that they were forced to move at his pace which, for a four year old boy who had been locked in a room for who knows how long wasn't as bad as they thought it would be, was still too slow for their taste. The fact he hadn't stopped shivering the whole why hadn't help the mood and they had also noticed that wherever his feet touched the ground there would be a footprint of pure ice left causing him to slip every now and then and every breath he took released a small, but noticeable cloud of mist from his mouth and nostril.

The moment they had arrived Tsunade rushed out to take them to a privet room where, being carful to avoid touching his skin, the blonde sannin preformed a series of medical Jutsu and cheeks before giving him a thick woollen blanket to try and warm himself with while Shizune came in and took a still very confused Madoka away somewhere so they could focus on what was happening.

When Tsunade was finished she turned to the others in the room and motioned with her head for them to follow her into the hall.

Closing the door behind her the blonde let out a sigh and told them what she had found.

"He should be dead"

This was met with three looks of both shock and fear, but before they could ask what she meant Tsunade shushed them and continued.

"His body temperature is at -320.44°F, the same as Liquid Nitrogen. His blood should be frozen in his veins and his body completely solid, but their not. All his bodily functions are acting normal, heart, lungs, liver, kidneys, all working perfectly. In fact when I took a look at his muscle tissue and bone structure I was shocked, his body isn't just working perfect, but better then perfect. There's also something off about his chakra but I don't really understand what, it's unlike anything I have seen before."

When she had finished Minato got a confused look on his face.

"I don't understand. How is any of this possible?"

Before Tsunade could venture a guess Sarutobi pulled out a large pile of papers from his kunai pouch and held it out to her to look at.

"I think these will help shed some light on things, I haven't read them all, but what I have is quite informative. It seems Orochimaru was able to implant a bloodline into young Naruto."

"What!"

Snatching the papers away from his hands Tsunade, with Kushina and Minato reading over her shoulders, read the pages Sarutobi had singled out. The more they read the more discussed they got.

"That bastered, how dare he do this do my son! When I find him I'll make him wish he was never born!"

Before Kushina could go on about all the different ways in which she was planning to carry out her threat there was a loud noise in the room they had left Naruto in shortly followed by a muffled scream.

Without a second thought the four Hokage class ninja burst into the room to see what was going on and were met with a worrying sight.

Stood next to young Naruto's bed in full black ninja gear was a man. His face was covered and the mark of the Hidden Rock village was on his forehead protector. In his right hand he held a Kunai and looked ready to bring it down. But that wasn't what shocked them.

It was the fact he was completely frozen solid.

It took them a full minute of staring at the Rock-nin before they realized that Naruto must have grabbed onto him when he was about to stab him with the Kunai and the realization hit them all like a ton of bricks and that was all it took for them to break out of their shock.

Realizing that somehow a Rock-nin had not only found his way into the village, but also had information about his son, Minato rushed off to organize a platoon of ANBU to search the village in case there was more and to find out how the nin had information about his son when he had only found out himself a few hours ago.

Kushina ran over to her son and while being carful not to touch him made sure he was alright and sending the occasional worried glance towards the frozen ninja next to her.

Tsunade did a quick diagnostic on the Rock-nin before moving to Naruto and performing another see it anything had changed and Sarutobi had someone come in to take the frozen Rock-nin away.

XXX

Hope you like it :)

R&R :)