A/N

So, this is set after Blood of Olympus, during Order of the Phoenix. Dumbledore calls his old friend Chiron to send him a DADA teacher, instead of Umbridge. Chiron sends Percy, and, well stuff happens.

May be updated every second week, or when I feel like it.

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Albus Dumbledore surveyed the Great Hall. The Sorting had just ended, and he was about to give his warnings, announcements etc. Almost everyone was there. Almost. He sighed, and began.

"Good evening to all, a welcome back to old students, and a welcome to new ones. I have a few announcements before we begin the feast, so bear with me. We have a new Defence Against the Dark Arts teacher, Professor Perseus Jackson, however he doesn't seem to have shown up yet. The Forbidden…" His words were suddenly cut off by a loud splash, and an animalistic scream of rage.

"KRAAAAAAAA!" Luna Lovegood at the Ravenclaw Table shot up in her seat, face paling dramatically.

"Drakon!" She cried, and all over the Hall, people started to whisper. On one hand, Luna was called Loony Lovegood for a reason. On the other, well, on the other hand, that roar had sounded very loud. And very angry.

The front door slammed open, and there was the sound of running feet, as well as yells such as "Take that, you Reptile!" "You stink, you idiot worm!" "Turn around!"

"KRAAAAAAAA!"

"Gods DAMMIT YOU STUPID BEAST!" someone yelled, just as the doors to the Great Hall slammed open, revealing seven people, and one large, very scary dragon-thing.

One of the new people, a girl with a blue feather in her hair, climbed up on the Ravenclaw table and called out.

"Listen up! Don't look in its eyes, it can paralyse you. Be wary of where you sit, it spits acid. And don't try your magic, its scales are harder than titanium, and magic will just make it angry. Percy!" She called again to the other newcomers, who were fighting the drakon with strange glowing swords and knives.

"Yeah Piper?" replied the oldest, who had the neck of the drakon in a vice grip, and was hacking at it with a glowing bronze sword. Of course, by oldest, he was about 17, looking like he wasn't quite out of school yet.

"Go for the eyes!" the newly named Piper called, before leaping off the table onto a part of the drakon, struggling to hold it down.

"Go for the eyes, the eyes, PERCY!" one of them called. She had blonde hair, and her weapon was not a strangely glowing metal, but a long sword that looked like it was made of bone.

"What Annabeth?" Percy replied, giving up on hacking at the drakon, as he hadn't made a dent.

"I remember this Drakon! Remember?" Annabeth called, ducking under its wildly thrashing tail.

"Uhhh, no? I don't have time to think!" Percy replied, struggling to hold the drakon down.

"Manhattan!" The single word seemed to shock Percy, and he let go of the drakon.

"Oh, hades!" He swore. "Frank, only you can kill this drakon!" The mentioned Frank gave a start.

"Why me?" Frank called.

"It can only be killed by a child of Ares!" Percy yelled back. "Sorry, I'm going to steal all you water." He told the rest of the Great Hall, and suddenly all the water, from cups and jugs, flew up into a great ball of liquid. The water ball then flattened and flew down to wrap around the drakon, in where its front legs would be, if it had legs.

"It's Mars, not Ares!" Frank replied, ducking under a spray of acid that splattered on the rock behind him.

"Same thing!" Piper called, from where she wrestled with the tip of its tail.

"It's not! It's really not. Can I at least have some backup here?" The last part Frank yelled to the whole Great Hall, who had been staring at them the whole time.

"Luna, Dragon, help! Nev, what do you need?" Annabeth called, and Luna Lovegood and Draco Malfoy stood, and pulling out glowing bronze swords somehow, they ran around to help. "Seeds! Does anyone have seeds, or plants, or anything like that?" Annabeth cried, and Pomona Sprout wordlessly levitated a packet of seeds over to the blonde, who threw them to Neville Longbottom.

Neville threw the packet of seeds on the ground, and they instantly started to grow, creeping thorned vines wrapping around the body of the drakon. A blonde boy with a bright gold sword leapt into the air, floating there for a moment before landing on the monsters head, pinning it to the ground.

A short Latino boy with curly hair shot fire at part of its tail, before making a ring of fire and holding it to the ground.

"Thanks Leo!" Frank called, and Leo just grinned and did a handstand on the drakon, setting himself on fire as he did so.

A small girl with golden eyes ran along to the centre of the room, and all the golden candlesticks, platters and dishes flew together, melding and forming into three golden men. The golden people marched towards the drakon, and soon the beast was subdued.

"Frank, go for the eyes!" The gold-eyed girl cried.

"How Hazel?" Frank replied.

"Eagle!" Hazel yelled back. Frank concentrated for a moment, then in the place where he had been was a giant golden eagle. The bird swooped down, clawing at the drakons eyes. Frank turned back to his human form, (standing on the drakons head of course) then took his sword and slammed it into the giant golden eye below him. The beast roared and squirmed, then it stopped and dissolved into golden dust, leaving behind its head. The water flew back to the cups and jugs and the golden men transformed back into candlesticks and dishes and platters.

Percy looked around at the Great Hall, scanning for any threats, before collapsing on the ground next to Annabeth.

"Everyone OK, no-one hurt?" He asked softly, but his voice was loud in the silent Hall. Annabeth sighed, and nodded.

"Everyone's OK."

"Why did you feel the need to take me to my job? I would have been fine on my own." Percy asked.

"I needed to test out the Argo 3. It's fine by the way, landed in that big lake." Leo said with a grin.

"You wouldn't have been fine on your own." The blond boy said.

"Jason, I would have been fine!" Percy complained.

"What about the manticores?" Piper asked.

"And the Hellhounds." Frank added.

"And the Venti." Hazel butted in.

"Oh, and the Cyclopes." Annabeth added.

"But, oh never mind." Percy sighed. "So, Luna, Dragon, why are you here?" Percy asked. Luna tilted her head to the side.

"We go here, of course." Percy frowned.

"Go where?"

"Hogwarts. You know, where you're supposed to be teaching." Luna replied.

"Wait, we're here already?!" Percy yelped, staring at the students, who stared back. "Gods, I thought we were still in Wales!" He cried.

"You should probably go and sit at the head table." Luna pointed out. Percy stared at her.

"Yeah. I probably should. But what about the others?" He pointed out.

"We'll go. It'll be OK." Annabeth said, smiling at Percy. He nodded, and they turned to leave. Suddenly, a deep rattling breath sounded. Sybil Trelawney stood, and in a deep and husky voice she spoke.

"Seven half-bloods shall answer the call,

To storm or fire the world shall fall,

An oath to keep with a final breath,

And foes bear arms to the Doors of Death."

The response was immediate.

"NO! We have already done it! No more!" Jason yelled, rising off the floor. Leo set a ring of fire around them, and the ground rumbled. Percy and Annabeth were in the centre, with the others surrounding them. The water had been called back, floating in a ball above Percy's head. Frank turned into a dragon, and Leo set himself on fire. And all their ire was directed to Sybil Trelawney, who stood, blinking and confused at the head table.

"Guys, calm down." Piper said, and amazingly, they complied, glaring at the Divination Professor, before all but Percy turned around and walked out the door. Percy walked to his seat and sat down, eyes searching the hall.

Dumbledore cleared his throat.

"As I was saying, this is the new Defence Against the Dark Arts Professor, Perseus Jackson."

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The Great Hall was abuzz with whispers. Harry, Ron and Hermione were quizzing Neville on what he did, and how, and discussing the new professor.

"How do you know him Neville?" Hermione asked, but Neville just shook his head.

"I'm not allowed to tell. Reyna would be furious." He told the inquisitive trio. "What do you think Percy will be like?" He asked, changing the subject.

"Percy?" Hermione asked, picking up on the nickname.

"Yeah, the new professor. I sort of know what he's going to do, but it isn't set in stone." Neville said. "What do you think?"

"I think he'll be tough. I'm probably going to fail." Ron mused. Harry nodded.

"Yeah. True."

"Did you notice, that not once in that whole fight, did he use his wand?" Hermione pointed out.

"That's odd. But, you remember what the feather-girl, Piper said? Magic doesn't work on it. It might be like a troll, magic resistant." Harry said.

"I suppose. But did you see their weird glowing swords?"

"Sort of hard to miss them." Ron said, his mouth so full of food it was a wonder he could be heard.

"Well, yes, but do you know what they are made of?" Hermione asked.

"I do. But I can't tell you. Percy will though." Neville told them. "Just be patient, and everything will be explained. Also, we have him tomorrow." He added.

"With who?" Harry asked.

"Slytherin."

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A/N

Welcome, to Professor Jackson's Defence Against the Dark Arts (and also monsters)!

I hope you liked the fight scene with the drakon.

-Queen of the Rings