Author's Note: Well hey guys I decided to do another fanfic! This is a crossover one that I have been thinking of doing for a long time, so I finally decided to do it.

I'm not saying much, just that I have already thought things out so I hope you won't get to picky about the couples I'm doing.

This starts out as after the Rise of Nine and the Last Olympian , except on the LL side, Five will be with them, and five is a girl. They will have also already gone to Nine's penthouse and trained a lot. Thats just an excuse to explain why Marina is so badass. And don't ask how Five is with them you can make up your own story as to how that happened.

Five is Sophia.

A few other things that will be changed:

Marina will have the ice legacy from I dunno, maybe when a mog insulted her cepan really bad

a few characters might be ooc...

Marina is sorta, uh, a little badass at times.

Disclaimer: I don't own anything except for my own creations.

Chapter 1

Percy's pov

I'm relaxing at the beach in Camp Half Blood with Annabeth, the both of us sitting there and enjoying the view. Soon we decided to go back to our cabins.

On the way there, we pass by Thalia's pine tree. I am walking past when I notice a few shapes in the distance. I frown. Annabeth sees my face and asks,

" What is it seaweed brain?"

"Nothing much Wise Girl, just that I can sort of see a few shapes in the distance."

Annabeth looks in that direction and says,

" What do you think it is?"

" I dunno but let's check it out."

We wait at the camp borders as the shapes get bigger and bigger. When I can see the shapes better, I find out its actually a couple of teenagers, dragging along these weird chests.

Annabeth looks to me and says,

"Lets go confront them and ask what they are doing here."

I nod and we walk towards the teenagers. When they spot us they just give us a tired smile. The youngest one of them, a little girl with auburn hair that looks like twelve says,

" Hullo mister!" We are looking for a place to rest for the night. Do you live here?"

Annabeth looks at her and says,

" uh yes we do, my name is Annabeth, and this is Percy."

I smile at them and say,

" Nice to meet you guys, what are your names?"

A brown hair girl steps forward and says,

" I'm Marina and that's Maren, Ella, Joesph, John, Sarah, Sophia and-"

The guy with long black hair cuts her off and says,

" and Stanley."

The one called John says,

" Well nice to meet you, can you give us a place to stay for the night?"

Annabeth thinks for a moment and says,

" Wait I have to ask our camp director first. I'll go get Chiron."

They nod but I catch Stanley saying in a low voice,

" Who they frickin hell would be named Chiron? Almost as bad as Stanley..."

When Annabeth runs off, I turn to them and ask,

" Whats in those chests?"

They all give me a wary glance. The one called John says,

" Stuff."

I nod suspiciously, but I drop the subject. I notice every one of them except Sarah and Ella have three scars on their ankles. What was weird was that the scars were the exact same on all of their ankles, and the scars were in this weird shape that is most definitely there for a good reason.

They all shuffle around on their feet awkwardly when Ella says,

" Why is there a dragon around that pine tree?"

They all look there and frown. They turn to me and say,

" yeah why?"

I'm confused. If these were normal humans, then they normally wouldn't see through the mist. There is only a chance that one or two of them can see through it, not all of them.

I try snapping my fingers and bending the mist. They all stare at me confused. The one called Joesph says,

" Umm whatever you're doing, it's not really working..."

Shoot. Lucky for me, Annabeth comes back with Chiron right then, who is in wheelchair form.

Chiron approaches them and says,

" You are looking for a place to stay?"

They nod and look uncomfortable. Chiron nods and says,

" Let me talk to Percy for a moment."

Chiron leads me off to the side and the first thing I say is

" They are most likely not normal humans. They can see through the mist, they are carrying these unusual chests, and I noticed identical scars on a some of their ankles, the scars are in this weird pattern."

Chiron nods thoughtfully and says,

" They could be demigods, but I'm not sure."

" Well, they are all like, between twelve and eighteen. Most of them should be dead."

" This is highly unusual. A few teenagers carrying chests that look tired and they are walking on a highway."

" Are you letting them stay for the night?"

Chiron says,

" Why not? They can stay in the big house."

I nod and Chiron faces them and says,

" You may stay with us for one night. But I'm afraid one night only."

Sophia says,

" okay, but can you explain why there is a dragon near the pine tree?"

Chiron simply says,

" You may find out soon."

They nod, but still look weirded out. Chiron mutters under his breath so quietly that I can barely hear,

" I grant you permission to enter."

The one called Stanley looks at us and says,

" Uh, why would you say we need permission to enter when you already let us?"

Chiron throws a quick glance at me. Another weird point.

Chiron says,

" I just say it because I want to."

Stanley shrugs. When we walk over the hill, they all gasp. Maren says,

" Why the hell are there kids doing archery and duelling with swords?"

Chiron looks at her and says,

" Well Maren, this is no ordinary place. It is a place called Camp Half-Blood. If you can see all this, then it means you are a demigod, and you are half god, half mortal."

They whisper among themselves quietly so quietly almost no one can hear, when John says,

" We know fully well what we are. I can tell you that we are definitely not demigods or whatever you call it."

Chiron looks at him and says,

" Then what are you?"

They whisper among themselves again and Marina says,

" We do not trust you enough yet to tell you."

Chiron raises a eyebrow and says,

" Be as that may, you will be staying at what we call the big house tonight."

They nod and then Marina says quietly,

" Thank you for letting us stay here, would you like to name a price?"

Chiron shakes his head. He turns to me and says,

" Tell them all about camp and what a demigod is and does. It might get them to tell us more."

I nod.

Chiron walks off and I say,

" Well I guess I'll get your room set up and then I'll tell you more about this place."

Annabeth says,

" Well seaweed brain, I guess I'll head back to my cabin."

I nod and say,

" See ya Wise Girl."

She gives me a kiss and walks away. I turn to the teenagers and say,

" Well let's get you settled in."

Marina's pov

This is an interesting place. After we are all settled in, Percy tells us all about Camp Half-Blood, and demigods. He says that if we can see through what they call " the mist" Then we are probably demigods.

He says he is the son of the sea god while Annabeth is the daughter or the wisdom goddess, Athena.

I know I'm not a demigod though. I'm a alien, from the planet Lorien, a beautiful place, thousands of miles away, that was destroyed by the mogadorians. As one of the only survivors, I will do whatever it takes to get my planet back.

I'm glad we found Sophia, the fifth garde. We found her in New York with the tablet, and now we're here. Sadly, her cepan died already.

I'm slightly surprised that Greek mythology was real. It's a wonder really. If we tell them the truth, then we might be able to get them to help us, since the campers here all know how to fight.

When Percy leaves the room, when he shuts the door, Nine says quietly,

" He's listening into our room outside."

I simply say,

" It doesn't matter if he knows or not, we just won't tell him but he can find out himself."

Bernie Kosar is still in the form of a gecko. Chiron doesn't know hes here and we plan to keep it that way. We don't care much if they know, but we try to keep as many things secret as possible.

Maren says,

" Okay whats our next plan?"

I say,

" I still have a lot of gems from my chest because I never used many of them. Lets go and sell some, then we can head to the airport or a train station."

Nine nods and says,

" Maybe we can go to my safe house in Chicago. We can relax, train, and figure out a plan to beat Setrakus Ra. I will personally want to punch him right in his big ugly face."

John says,

" We can do that, but remember, we won't get off so lucky next time."

I say,

" Don't use your legacies here got it? Only if there are mogs."

They nod.

I quietly mutter

" Hey Nine is Percy still outside the door?"

Nine cocks his head to one side for a moment and nods. Ella quietly giggles along with Sarah as Six yells,

" Hey bastard! Why don't you fucking go away! And yes I am talking to you sea bastard!"

We all listen as we hear Percy give a shout of surprise. Ella opens the door, and standing there is Percy with a look of total surprise on his face.

Six puts her hands on her hips and says all " I'm better than you style" ,

" Maybe you could tells us why you were eavesdropping on us?"

Percy goes red in the face and says,

"Um, uh, er, uh, how did you know I was here?"

" That's not my question!"

" Uh I was just ... here? Anyways, who's Setrakus Ra?"

Sarah copy's Six's pose and says,

"So you were listening on us!"

We all glare at him. We all use our special death glares, normally meant for people who piss us off or mogs.

" No really who is he?"

Six scoffs and says,

" Well you're just gonna have to find out yourself. And if we catch you spying on us ever again, I swear I can kill you easily. Or I will just ask Ni- Stanley, to do it for me."

Sophia is a mine-reader and a telepath and using telepathy she tells us,

He is suspicious about us. He is telling Chiron everything he can about us... Oh and he is going to eavesdrop on us anyway, except using his girlfriend's invisibility hat...

We nod at Sophia. Ella says,

" Well mister, I am just going to say, I wouldn't eavesdrop on us again, even if you can turn invisible."

Percy looks really shocked as we laugh. He leaves the room quietly. When I see Eight looking at me I blush. We haven't been talking together much ever since dulce.

Percy's pov

There is definitely something off with those kids. They very obviously have these special abilities or powers, because they seem to have super hearing or mind hearing. And they are so sure of themselves.

I tell Chiron everything I know and suspect about them. Chiron nods and says,

" They are most likely demigods, but what god would have powers of something like mind-reading and super hearing?"

" I'm not sure, but I will keep an eye on them for now."

" You do that, I have a lot of other matters to attend too..."

Xx Next Day xX

John's pov

So far, we haven't told anyone in this place anything. I wake up groaning, and find that everyone except for Nine is awake.

The others grin at me and say,

" We took a shower this morning and ate breakfast with all the other campers. Chiron let you two sleep and told us to give you these glasses and plates. Apparently they are magic and you can have whatever you desire."

Ella is giggling. She sure is hyper. I can't help thinking how she should be living a happy life on Lorien, going to school and making friends.

All of a sudden we hear an explosion. It can't mogs, can it? Percy said the mog is hidden and disguised as a strawberry farm by the mist and humans think its a strawberry farm. But what will mogs see?

I quickly tell the others to pack up the stuff and I go to Nine and say,

"Nine wake up! There might be mogs!"

Nine is up in a flash. Six says,

" I'll use invisibility to see what it is first."

We nod and Sophia says,

" Let me come with you too so I can use telepathy to tell the others what it is and if it's mogs, we don't have to run back here and tell you."

Six and Sophia disappear. We all grab a few weapons when all of a sudden Sophia says using telepathy

There are reports there is a huge army of monsters a few hundred meters away from camp entrance! All the people in this camp including Chiron don't know what they are, but I read their minds and it looks the mogs have found us! There seem to be five hundred of them including one fifty pikens and one hundred krauls. Grab your stuff and get out here asap! And can we use our legacies?

Yes there's no point in hiding it now, the mogs are here.

We all grab out chests and sling our bags over our shoulders. We run into Chiron on the way out. Chiron turns to us and says,

" There is a huge army of monsters. I don't know what they are but they are armed and look ready to kill us."

I decided to tell him what they are. I turn to him and say grimly,

" Mogs. Chiron leave this one to us, you don't know them and we do. They are dangerous and cruel. Go get campers and set up a defensive line at camp. If I need help I will give a signal."

Chiron raises an eyebrow at me but doesn't say anything. Instead he just nods.

I turn to the others and say,

" Eight teleport Nine and Marina to Six and Five. Then come back and get me and Ella. Sarah, you're staying here."

I forget to use the aliases that Marina made up. When Eight teleports away, Chiron looks curious, but he makes an order to the campers.

I say in my head,

Hey Bernie Kosar?

Hey boss.

Go fly to Six and give her a hand.

Got it.

When Bernie Kosar changes into a bird and flys away. Chiron doesn't say anything, but continues looking curious.

Eight teleports back and grabs my hand and Ella's hand. We teleport away.

Chiron's pov

This is quite interesting. The one called John told me those pale faced monsters are called mogs. When he tells me to leave to him I nod. He seems to know what he is talking about. There is clearly a lot they haven't told me.

I was also quite surprised when John put out a gecko on the table the gecko and it turned into a bird.

When John called his friends numbers instead of names I was quite curious. In all my years of training demigods and heroes, I have never seen demigods that can teleport, or demigods that are called numbers.

The campers are set along the hill with Thalia's tree. We are all watching amazed as the newcomers fight those " mogs". The girl called Maren is blinking in and out of sight as she slices through the mogs with ease. She is occasionally raising her arms in the air and a few seconds later, a lightning bolt would strike down from the sky and destroy a mog.

The boy called Stanley and Nine is laughing as he runs around at an amazing speed using a pipe staff to hack away, killing multiple mogs with every stroke.

John is somehow a human fireball and burning them. Is he resistant to fire? Probably.

The one called Joesph is teleporting around and using a sword to stab and slash at the mogs.

The young one they called Ella only looks like she is twelve yet she is using this interesting cannon and shooting away at the mogs bravely.

Marina, the polite one, is shooting icicles at those mogs.

Sophia I think she was, seems to be controlling five swords at once and using them to slice through mogs.

I know that some of these powers cannot be from the gods. So what are these teenagers?

Percy's pov

All the campers are in full battle armour, but we aren't doing anything, just watching as the weird kids cut through the monsters with incredible skill and speed.

Those kids are now also fully displaying their powers. They seem to have control over ice, fire, and the elements. We watch in awe.

Annabeth comes up next to me and says,

" These guys are incredible. They are better then the whole camp put together. They also have interesting powers."

I nod. The campers are all set in a defensive position. We hear another loud explosion from the other side and we realize shockingly, that there are at least another two hundred of those monsters coming from the other side. They are surrounded.

We get ready to fight. I see the Marina girl run with amazing speed, over to the other mogs. She freezes almost all of them with ice. I wonder how she does that.

Marina's pov

I notice more mogs coming from the other side. This isn't good. I use my super speed and run over there. Then I freeze almost all the mogs. I will deal with the pikens later. I have an idea. I take a deep breath and raise my hands to the sky.

I yell,

"THIS IS FOR ADELINA AND LORIEN!"

All of a sudden, hundreds of icicles pop out of nowhere and rain all over the mogs, killing almost all of them and at least two pikens.

There are about one hundred mogs and five pikens left coming from this side. and face the pikens.

I can't also help but think that I have never fought like this before. I've done it. I defeated almost a whole army of mogs by myself. I've become a warrior.

Six's pov

I am fighting with all I'v got, I kill another mog and think,

This is for Katrina

As I stab another, I think,

This is for my family

I strike down a piken with lightning and think,

AND THIS IS FOR LORIEN

Out of the corner of my eye I notice Marina taking down a whole army of mogs. I briefly hear her say,

" FOR ADELINA AND LORIEN!"

She is fighting so well, I'm surprised. I am back to killing mogs when I hear Marina's scream. I whip my head around while still killing, and I see Marina has a large cut on her back. She is desperately avoiding the mogadorian who is trying to kill her.

It's about to stab her in the heart and I desperately try to get over to her while bracing myself for another scar. All of a sudden Eight teleports and kills the mog. I feel relieved knowing that he will defend her, and I notice Ella running over to her with two mog cannons in her hands.

I yell,

"JOHN!"

"WHAT?"

"MARINA HAS BEEN INJURED BADLY! GET TO HER ASAP!"

"GOT IT!"

John runs to her and heals the nasty cut on her back. Only Nine, Five, and I are fighting the mogs here, but we are enough. I also notice the campers standing in full battle armour on top of the hill. They are watching us in awe.

Soon, once all the mogs are down I notice we are all covered in ash. I blow the hair out of my eyes. I am surprised to see that most of us aren't aeriously injured or anything.

Nine, Five ( I can't get used to calling her Sophia...), and I are all really strong and we only have a few scratches on us. John looks fine, he probably healed himself. He looks tired from healing Marina. Healing isn't really what John does, that's normally Marina's job.

Ella's arm is hanging by her side all limp and I notice a long gash from her shoulder to her elbow. Marina is passed out on Eight's back. I smirk at that. Eight himself also only has a few scratches.

The campers are all looking at us in awe as we sit down on the grass tiredly.

Percy's pov

All of us are staring at those weird kids in awe. They are so skilled and even though there are only seven of them, they just took down a army of over seven hundred of those pale faced creatures.

Chiron says,

" Well, that was quite interesting."

The one called John says in a tired voice,

"If you don't mind can we stay here today too?"

Chiron frowns for a moment then nods. He says,

" I would like to hear your story."

They nod tiredly and Joesph teleports them all by two's to their room in the big house.

Author's note: Phew that was one long chapter. For those of you who don't like it, I have to say, I favour the LL series more then PJO. Things might get weird... Since most ideas are taken my writing isn't the best, so sorry.

Hope you enjoyed and I will try to update soon when I get a review to tell me how it is...