AN:

Hello everyone this is MrOreoMan, I'm a new author trying my luck in story writing.

I've been reading different kinds of fanfiction stories for a while now, and like most people on this website I was inspired to write a fanfiction myself and started coming up with some ideas.

I was mainly inspired by VexMaster and his story The Swarm of War to write this story and the death of Monty Oum (rest in peace). I highly suggest reading VexMasters' story if you haven't and if you're into both Warhammer 40K and the Zerg swarm.

Now without further due here is my story.

Disclaimer: I don't own RWBY or the StarCraft franchise, both are owned by their own respective owners, Rooster Teeth and Blizzard.

"Normal talk"

'Thoughts'

"Telepathic communication/shouting"

*WARNING SPOILERS IF YOU DIDN'T SEE OR PLAY THE GAME*

Prologue Part 1: Welcome back

Unknown Narrator:

Sarah Kerrigan, or infamously known as the Queen of Blades is the ultimate ruler of the Zerg swarm. With her swarm she had conquered many planets and took countless of lives from both the Terran and Protoss races and brought terror to the Koprulu Sector.

However, before she was any of this she used to be a human, a ghost operative to be exact.

As a ghost she first worked under the Confederacy, an old Terran government, and was forged to become their ultimate assassin, she was then taken in by a rebel leader named Arcturus Mengsk and his rebel group.

She saw Mengsk as a father figure and a leader that she would follow to the end. She had close relationships to a few people, but the one person that she would treasure the most even now is a man named James Raynor leader of the Raynor's Raiders.

Both Raynor and Kerrigan joined and followed Mengsk's rebellion against the Confederacy until one mission where Mengsk deliberately abandoned Kerrigan to the Zerg onslaught on Tarsonis.

Due to this betrayal Raynor and his group left Mengsk and both men thought Kerrigan was forever gone.

Oh how wrong they were…

The previous leader of the Zerg, the Overmind, turned Kerrigan from a human into the Queen of Blades, my ruler, and as the Great War waged on between the three races so too did her powers.

The Great War ended with the death of the Overmind itself by the heroic sacrifice of a Protoss Templar named Tassadar who used the energies of the void to permanently kill the Zerg ruler.

After the Overmind's death, my queen quickly gained control of most of the Zerg broods and waged a war against some of the Overmind's loyal agents called the Cerebrates, this war was known as the Brood Wars.

During this war, however, a fleet from a distant Terran world known as Earth arrived into the Koprulu Sector. They called themselves the UED and they immediately took control of the main Terran worlds and eventually the new Overmind that the remaining Cerebrates created.

However, their intrusion did not last for long, my queen manipulated and tricked the Dark Templars into killing the New Overmind and the Cerebrates that was against her. Now as the sole ruler of the Zerg swarm she driven out and killed all the UED fleets ending the Brood Wars.

Four year later during this time my queen grew in power and the swarm assimilating new species into the endless swarm.

Then she started her conquest across the galaxy sparking the Second Great War.

During this war she was looking for pieces of an ancient Xel'naga artifact called the Keystone that was a crucial part of a prophecy foretold by the ancient Xel'naga themselves.

However, James Raynor manage to collect all the pieces of the Xel'naga artifact, and with the aid of his allies and Prince Valerian and his Dominion forces they launch a daring invasion on Char.

On Char James Raynor used the artifact to cleanse the Queen of Blades of most of her zerg influence and back into Sarah Kerrigan.

After the battle Raynor and his allies took Kerrigan to a secret research station in order to test her of any remaining zerg influence. However, they were immediately attacked by Mengsk's forces with their goal to end Kerrigan's life.

During the ensuing battle James Raynor and Sarah Kerrigan were separated and thus tried to escape the Dominion forces their own way. Unknown to Kerrigan, Raynor was shortly captured after their separation.

Kerrigan soon found out that the Dominion captured and executed James Raynor and thus in her sheer thirst for vengeance she returned to lead the zerg swarm once again. Unfortunately, the swarm was broken and in disarray and thus Kerrigan had to rebuild the swarm.

As she was rebuilding the swarm she faced many obstacles like the Brood mother named Zagara who was ultimately killed for her disobedience. With each obstacle conquered her own powers grew until the Dark Prelate Zeratul took her to the very planet where the Zerg were first born, Zeras.

In this place Zeratul told her of the prophecy of the end times and her role to play in it, however, Kerrigan did not care and only seeks power to kill her enemies.

On this planet Kerrigan transformed back into the Queen of Blades, however, far more powerful than ever before. Once she received this power she soon received a message from Mengsk himself and was given news that James Raynor was alive.

Kerrigan swore that she would find James Raynor and thus enlisted the aid of Raynors old allies Matt Horner and the now renegade Prince Valerian in order to find him.

Both Matt and Valerian succeeded in finding James Raynor and with the new Queen of Blades and her brood, attacked the prison ship that kept James Raynor.

After freeing James Raynor the Queen of Blades received a psionic message from an unknown source from the secret facility of Skygeirr.

When she arrived at the facility, she discovered the unknown source was an old enemy from the UED, a former admiral named Alexei Stukov now turned into a sentient infested terran. Stukov told Kerrigan about the facility making the hybrid abominations for Mengsk's army and needs to be destroyed.

My queen set about destroying this facility, however, Stukov also warned her about an ancient shapeshifter that goes by the name of Narud. My queen faced Narud in battle and won but was fatally wounded.

Fortunately, she was rescued by Alexei Stukov and was brought back to her Leviathan in order to recuperate.

Now my queen has finally arrived.

How I remember that day as if it were yesterday, as the saying goes.

*Flashback*

Location: Zerg Leviathan over Skygeirr Facility

Kerrigan just woke from her short rest in the zerg spawning pool within her Leviathan after her battle with Narud and is now currently making her way to the nerve center of the Leviathan.

Narud was a dangerous and a cunning opponent, but like all those who dared challenge her, he to was ultimately defeated and killed by her.

However, she could not enjoy her victory over an ancient being such as Narud. What Naurd told her before he died sent chills throughout her body.

"Amon lives. You will see him soon."

Now she knows for certain that the possibility of Amon's coming will surely happen and she needs to be ready.

But first she needs to settle a score with a certain murderer before preparing for Amon's arrival.

Once she arrived at her destination she was immediately greeted by her co-hosts.

Dehaka, Isha and the new addition Stukov.

When she first saw Stukov she was somewhat surprised that the man, who was once her enemy, was brought back to life as an infested by the experimentations of Narud.

Now thanks to Stukov she found this facility which created hybrids for Mengsk and saw to it that it was burned to the ground and all it's research gone.

Afterwards she gave Stukov an ultimatum, Join the Zerg Swarm or leave, pretty much along those lines.

Now she thought about it she had a curious little question to ask him.

Stukov turned to Kerrigan and said "Ah! You are awake and in good health."

"I'm fine, but, I have one question for you, one that I have been curious about."

"What is it then?"

"You said that you were held in that facility for years, why did you choose now to contact me and inform me about this facility?"

"We felt your power weakened after the Dominion attacked Char with that Xel'naga artifact so it wasn't the right time, plus you were still under the influence of Amon at the time." answered Stukov.

"How did you know about the attack on Char and my supposed drain of my powers. And most importantly, who is "we"?" asked Kerrigan with a suspicious look directed toward Stukov.

Stukov immediately answered "I overheard the attack from some of the Dominion scientists that were experimenting on me. And about how I know about your drain of powers, well you can say I had some help from something within the facility and that something also helped me escape and communicate with you."

Kerrigan pondered over the information that Stukov told her. 'It would explain how Stukov manage to not only escape this facility but secretly send a psionic message to me without alerting both Narud and the Tal'darim. But whoever helped Stukov must be a powerful psionic user in order to pull something like this.'

With this new information in mind Kerrigan asked "Do you have any idea who this person might be?"

"No. Like I said something helped me escape the facility and communicate to you. When I asked for an identity all he said was that he can not tell me till the time is right, however, he did tell me where he's being currently held." Answered Stukov.

This caught Kerrigan's attention "Then why isn't he communicating with us now?"

"He told me he was being held in a Tal'darim made prison that suppresses his psionic powers. However, it seems he manage to somehow communicate with me to an extent."

"Where is this prison?"

"Deep inside the facility away from the battles that we recently fought in."

"Take me to him I wish to meet him."

Location: Skygeirr Facility

After walking and ripping through many security doors Kerrigan and Stukov finally arrived at a large door to the prison that held Stukov's anonymous saviour.

When Kerrigan first arrived she immediately felt a strange familiar presence on the other side of the door, however, it was blurry due to the prison blocking most of the psionic signatures coming from within the prison and her attempt to see within the prison.

"This prison can definitely block any high level psionic powers or signatures, however, whoever is on the other side of this door must be a powerful psionic user in order to leak out this much signature, who could it be? And why does it seem so familiar to me?" Asked Kerrigan as she looked at the massive door.

"there is only one way to find out." Said Stukov.

With that statement Kerrigan begun to use her pisoinc energy to blast open the door. Due to the Tal'darim runes and technology, the door held against Kerrigan's power.

Annoyed, Kerrigan pooled in more of her energy into the attack and was awarded with the door slowly giving away.

With one last push the door gave way and was blasted apart by Kerrigan's sheer psionic power. With a smirk of victory, she and Stukov walked into the prison in order to meet their unknown ally.

The prison was fairly large, large enough to fit two Ultralisks with some room to spare.

Other than the large amount of space, the first thing they saw when they entered the prison was the sheer amount of wires and machinery covering and connected to the walls and the floor of the prison.

The second thing they noticed was all these wires were converging to the center of the prison, and the being at the center connected to all the wires made Kerrigan and Stukov stop in their tracks.

The being was a large worm with fleshy bulbous body with seven pairs of purple tentacle-like legs.

Kerrigan and Stukov knew exactly what they were looking at.

It was a cerebrate. A powerful one at that from they can sense.

Kerrigan was the first one to get out of her shock and walked up to confront the cerebrate followed shortly by Stukov.

"Who are you. And were you the one that informed and aided Stukov and me with the downfall of this facility?" Asked Kerrigan.

At first the cerebrate says nothing. Until after a moment it spoke with a tried voice.

"My queen, is that you? It's good to see you once again."

Kerrigan was taken off guard when the unknown cerebrate communicated with her telepathically, no one other than those of her swarm ever dared or succeeded, however, that did not matter as she quickly composed herself.

"You know me but I don't know you, however, I will admit you seem awfully familiar. Who. Are. You." Demanded Kerrigan.

"My queen, have you forgotten about me, it is I your guardian and your first loyal servant when you were first indoctrinated into the swarm."

This greatly shocked Kerrigan. "That's impossible! The cerebrate that watched over and served me was killed by the Dark Templars when the Overmind was killed!"

"That is true, however, after that battle Narud found my body and essence and thus resurrected me back from the dead. However, for years he tormented, experimented and used my very essence and DNA to create and perfect his hybrids. It was this very prison where he kept me from communicating with you and using his foul technology and energies to keep me alive through the years. However, as he kept me here I grew stronger by secretly feeding off small amounts of psionic energies of this place for many years without Naurd's knowing until I could, with great effort, communicate and see those outside my prison. That is where I found Stukov and the destruction of this facility. With him I devised an escape plan for him in order to communicate with you about this facility, but had to wait for the right moment. That moment came when I felt a large spike in psionic energy and immediately recognized it was yours no matter how faint it was. So I set my plan in motion, aided Stukov and you know the rest."

Kerrigan was left speechless. Her first and most loyal servant/guardian that she thought had been killed all those years ago is supposedly now alive once again in front of her.

"You know this cerebrate?" Asked Stukov as he was looking between her and the cerebrate in confusion.

Kerrigan pondered, even with his psionic signature being as familiar as her old guardian this one might be a fake, she needed to test him.

"If you're truly that cerebrate then tell me, what did the cerebrate teach me after the death of cerebrate Zasz?" This question that Kerrigan asked will confirm for her whether the cerebrate before her is or isn't her loyal guardian

Without hesitation the cerebrate answered.

"Vision my Queen. I taught you vision."

Once again Kerrigan was left speechless.

When Kerrigan first emerged as the old Queen of Blades, she met the cerebrate for the first time and was thankful towards this cerebrate for protecting her. Thus she asked him to continue to watch over her. As the Great War waged on, the cerebrate taught Kerrigan all he knew on how to lead the Zerg Swarm as effectively and efficiently as she can and she in turned grew more powerful. She still remembers the most important lesson he has ever taught her.

"Listen well Kerrigan. The Swarm is powerful. But power is not enough for it's leader. You must possess vision. With vision, no army of any size or power can ever hope to defeat you."

'It's truly him. My servant. My guardian. My teacher.'

Stukov brought her out of her dazed mind.

"By the silence of this room, I'm guessing the answer was correct and that you two know each other."

Quickly composing herself Kerrigan replied.

"Yes. This cerebrate was created by the first Overmind and was tasked to protect me while I was growing within my chrysalis. After I was born as the old Queen of Blades I asked this cerebrate to continue his vigil to watch over me as I was still intergrading to the zerg swarm. I thought he was killed by the Dark Templars when the Overmind died those many years ago." answered Kerrigan as she once again looked towards the cerebrate.

"Now I'm once again back in your presence after all these years, oh how you grew in power my queen, it was my wish to see you once more during my years in imprisonment," says the cerebrate.

"It's also good to have you back after all these years, I will need your services once more for what the Zerg will face in the future," stated Kerrigan.

"I dearly wish to serve you once more my queen, however, I cannot with great regret as the machine I'm connected to is the only thing keeping me alive. If I were to be separated from this machine, I will die, Narud saw to that," said the cerebrate.

This news caused Kerrigan to curse

"Damn you Narud! There must be another way! I will not lose you again!"

"I'm sorry my queen. There seems to be no other way," Said the cerebrate as his entire body seems to deflate.

After a moment of silence and sorrow from both the cerebrate and Kerrigan, Stukov came up with an idea.

"What if we can find a new host body to house the cerebrate?" This brought back hope into Kerrigan's eyes.

"Yes that could work, but where are we going to find a suitable body for the cerebrate, his psionic power is immense from what I can sense, no regular body can withstand that much power," Kerrigan pointed out.

"There is one body that might work," This caught the attention of both Kerrigan and Stukov.

"When this facility was built, Narud had been secretly collecting any Terrans with powerful psionic potential. He would then use these Terrans' psionic energy and souls to feed his hybrid, what is left is but an empty husk. While I was communicating with Stukov during our imprisonment I noticed a very faint but powerful psionic signature coming from a captured Terran, at first I thought nothing of it, now it might be my only key to salvation," explained the cerebrate.

"where is this body now!?" hastily asked Kerrigan, if there was a chance for her guardian to once again be by her side commanding the swarm, then she would take it.

"I know where it might be, this facility has a cryo-chamber deep within the facility where they keep all those bodies, that's where they kept my body before they turned me into this," answered Stukov as he gestured to himself with his right hand.

"Then what are we waiting for, lets go!" Demanded Kerrigan as Stukov proceeded to exit the prison with Kerrigan following closely behind him.

Location: Skygeirr Facility

Kerrigan and Stukov arrived at the cryo-chambers.

The first thing they noticed was the amount of cryo-pods that was currently housed.

There were rows upon rows of cryo-pods with each housing a body.

It was an intimidating task they had to fulfill, but, Kerrigan wasn't deterred even in the slightest.

She faced far worse.

Stukov on the other hand.

"This is a lot of bodies, it might take us, I don't know, maybe a millennium at least to find this body for your servant," Stukov said sarcastically.

"We must try. I need the cerebrate under my services again, he will aid me greatly against Amon once we find this body, even if it means that I have to sort through all these pods."

Luckily for Stukov, they didn't need to.

"My queen, it may be easier for you both if you try sensing for the greatest psionic residue. The hybrids usually need time to consume the psionic essence of these Terrans and thus once finished, they leave behind a residue of psionic energy. The greater the residue, the more powerful the Terran must have been psionically," explained the cerebrate.

With this new information, Kerrigan's eyes glowed with psionic power as she scanned the room for the suitable body.

What she saw was green, mist like aura that each cryo-pod were currently emitting.

Most of the pods would emit the same amount of aura, while others would emit more but not enough for them to be the suitable host.

It wasn't after 20 minutes of searching that she came across an interesting pod.

This particular cryo-pod was emitting a large amount of psionic aura that it over shadowed at least three other chambers beside it on both sides.

"This must be the one. Stukov, cerebrate I found it I'm taking a look."

As she activated the cyro-pod and took a look at the body.

Suffice to say she was somewhat surprised.

The body was of a young adolescent male probably around sixteen years old.

He has short black hair and was probably around six feet tall, pale white skin and had a skinny almost stick like build while wearing grey undergarments.

However, most defining feature was his eyes, they were blank and without any signs of life.

If it weren't for the occasional heartbeat and breathing, she would've thought this teen to be a dead corpse.

Other than the eyes there wasn't any other defining traits about the teen.

Stukov came over and had a look at the teen. To say he was unimpressed.

"This is the host body for the cerebrate? Well I've seen far worse corpses. Are you sure you got the right one?" Asked Stukov as he stares at the corpse like body in the pod.

"I'm for certain that this is the right one, this child has the greatest amount of psionic residue compared to the other pods in this chamber," Kerrigan explained as she lifted the teen from the pod and carried him bridal style back to the cerebrate.

Once they arrived back at the prison, Kerrigan laid the body of the teen in front of the cerebrate for him to inspect.

"This is definitely the Terran that I sensed, now I must concentrate, for this next part is vital to my survival and must not be disturbed, I never done or attempted this before, you both should stand at a fair distance away," stated the cerebrate as the other two zerg beings proceeded to stand at a safe distance.

Kerrigan was worried for the cerebrate, but believed that the cerebrate can to do this procedure, while Stukov was curious and cautious on what was going to happen next.

They didn't wait long for the cerebrates whole body started to glow bright orange with psionic energy.

Then in a burst of energy the cerebrates psionic power created a storm of pure psionic energy around both him and the body.

The storm grew in both power and ferocity to the point where both Kerrigan and Stukov couldn't see the cerebrate and the body and are currently baring the storm the best they could.

Both spectators were awed by the sheer amount of psionic power that the cerebrate held. However, they weren't the only ones feeling the cerebrates power. Almost every psionic sensitive user in the Koprulu sector felt a powerful and ancient power.

The Protoss thought this ancient psionic power was the Overmind returning and thus were in panic and prepared for the worst.

The Terrans' ghost or spectre operatives and psionic users felt immense headaches and nausea from this power.

The Zerg everywhere were attracted to this power like moths to a flame.

And just as it suddenly appeared, it stopped.

The storm of psionic power has stopped. Both Kerrigan and Stukov looked around the prison they only saw devastation.

Wires and machinery were burned, melted and shredded to pieces, while the ground, walls and ceiling had large burned gouge marks and was charred black.

In the center of the room was a fairly large crater, still smoking after the ordeal.

Both spectators were awed by the aftermath of the cerebrates power.

'The cerebrate is this powerful? How in the world did we, the UED, manage to capture the Overmind If they were holding this much power?" Stukov then looked around the room once more and decided not to think about it to hard and started making his way towards the crater.

At the same time Kerrigan was making her way towards the still smoking crater.

'I can't sense him, what has happened? Did he succeed? Or did he die again?' Kerrigan than used a weak psionic wave to clear the smoke.

What they saw surprised them.

They didn't see the body of the cerebrate anywhere but the body of the teen lying at the center of the crater in a fetal position, however, the body changed.

What once looked like a corpse, now laying in the middle of the crater is a far healthier looking teen. The body now has a lean build and the skin colour changed from sickly white to a healthy peach colour, and somehow the grey undergarment is still intact.

"Well it appears to me that the process was a great success, don't you think Kerrigan?" Asked Stukov as he looked at the new body.

Kerrigan simply answered with a nod.

To Kerrigan and Stukov the process seemed to be a success.

But the body hadn't moved for several minutes.

"Oh no, Stukov head back to the leviathan and prepare for our arrival, I'll make sure he's alright!"

"Yes at once!" Stukov than ran out of the prison.

With slight panic Kerrigan rushed towards the body and started to inspecting it for any injuries.

'No injuries that I can see. What went wrong during the proc- '

She was then cut off from her thoughts when the boy she was holding stirred and started to wake up.

"mmmngggg! What happened? My queen is that you?" the boy asked in a state of daze and tiredness.

He opened his eyes and Kerrigan saw that his eye's changed from blank dead eyes to normal eyes with orange irises.

"Yes, but more importantly, cerebrate is that you," Kerrigan asked almost demanded.

"Yes it is I my queen, your loyal servant and guardian, now in a new body," answered the now identified cerebrate.

"Good now get up so we can leave this damnable prison," ordered Kerrigan as she stood up.

"Yes my queen." The cerebrate tried to stand but immediately fell forward landing on his face.

"Ouch. I still need to get use to the Terran body."

He tried again but this time with more success and started walking around to get use to the body. After five minutes he adapted to his new body and had a smirk of achievement.

As amusing as watching him testing out his new body. Kerrigan still had a task to do.

"Now since you have a new body I will ask again. Will you join the Zerg and serve me once more as my guardian," Even though Kerrigan asked it sounded more like an order due to the amount of power behind her voice when she said it.

Immediately the cerebrate bowed down onto one knee in front of his queen.

"I, cerebrate of the swarm and guardian of the Queen of Blades will serve you once again,"

"Since you're going to be my guardian you will need a name for yourself other than cerebrate. What would you like?" Kerrigan asked.

The cerebrate pondered for a moment then finally decided on a name.

"Ceres. I will choose Ceres for my new name."

"Then it's settled, Ceres I the Queen of Blades appoint you to be the Guardian of the Swarm and to protect the swarm from those who will do harm against it!"

"I will, my Queen."

Ceres then rose up to his full height and started radiating orange psionic energy, his eyes now bright orange of pure psionic energy.

"Welcome back Ceres," said Kerrigan with a smile.

"It's good to be back my queen."

AN:

Thank you for taking the time to read my first fanfic, and if you can please review and send me some feedback on my first fanfic I would really appreciate it. I'm in university and have classes to go to so don't expect any fixed updates.

Now to answer some questions you might have:

I decided to kill off Zagara, for those who played or watch Legacy of the Void, you might know the reason why I decided to do so. If you want to know wait for the next chapter to see.

I know some of you hate prologues and want to see the main story, I know I do to, but I need to do this prologue in order to set my OC's background origin and how he got to the RWBY-verse. I can tell you now that the next chapter will be the final part of the prologue.

Ceres is my OC cerebrate the one you play as in the first StarCraft when you play Zerg. Your character's strategy depends on how you play the game, plus they never reveal his personality other than complete loyalty to his master. So it's perfect OC material. As you read Ceres also had an impact on Kerrigan's previous life as the old Queen of Blades and practically taught her how to lead since she used to be a ghost operative and was used to taking orders instead of giving them.

Sorry for the lack of action in this chapter, the next chapter will have plenty.

If you have any questions, then just leave a comment and I'll try to answer all of them.