Hey guys! I made this Godzilla x PJO crossover because I had this idea for a really long time, even before I made my first fanfiction, and watching a fan animation of Godzilla Earth only fueled my imagination. Also, because if i didn't make this, I would probably completely forget. Also, this version of Godzilla and the other kaiju will be based off of the Godzilla: Planet of the Monsters trilogy version, but the kaiju will have powers from several movies, and not just the anime. I also won't be updating as much here either, just around once or twice a month until summer break. (P.S, the fan animation is made by 華音, or just search up MMD Godzilla Earth vs Ghidorah on YouTube)

Beta: Dalthale1642

Beta 2: Pedro Alonso Buby Huayanay Zamudio

No Beta we be deaded.

Credit goes to Rick Riordan, and everyone who made a Godzilla movie, anime, etc.

(Edit: 2/13/2023)

Italicized - Thoughts

Italicized and Bolded - Kaiju speaking

"Speaking" - Speech

"Speaking and Bolded" - Godzilla/Percy speaking at same time

The King of the Void comes from above to bring chaos,

The Avatar of Destruction comes from below to cast his judgment,

The Golden Demise wraps his wings around the world,

The Burning Mountain will clash with the Heavenly Lightning,

And chaos will ensue.

Chapter 1:

Godzilla was slumbering in a dense forest, in a valley between several mountains, appearing to be a mountain himself to any creatures smaller than him, when something touched him, or, more specifically, climbed up onto his snout, clambered over his teeth and hopped onto his nose. He ignored it. It was just a tiny creature. What harm could it cause to the King of Monsters after all?

Then it stepped on his eye. His eye. That fucking hurt. Godzilla decided to get rid of the annoying critter now. His body rumbled, making the pebbles tremble and the trees that had grown on his back shake. Godzilla allowed steam to erupt from his nostrils, and felt the creature scurry off of his eye in fright. That should do it.

Then the creature accidentally kicked a rock off the top of his head and it slammed into his already stinging eye. Godzilla internally sighed. What kind of critter was willing to die today? Wait, how did a creature of any kind get close without being roasted? He cracked open the eye that had been stepped on and looked around with his large electric blue eyes, searching for the annoying thing. His eye stopped as it spotted a tiny human… no, child was the term. It was staring at him in curiosity.

"What are you?" the child asked, his face not betraying fear even as the two had a staredown. "Can you help me? I got lost, and I don't know where to go."

Godzilla grumbled. Don't step on my eyes.

"Sorry about your eye. I didn't mean to step on it." The child looked up with innocent sea-green eyes. "Also about that rock…" The child rubbed his head sheepishly.

Godzilla was confused. The child could hear him? And it could handle the radiation emission?

The child looked up. "Yeah, I can hear you. I don't know what radio-ation is, though."

The Avatar of Destruction looked at the child with curiosity now. Why was this little human lost here?

"Well…" The child kicked a pebble across the dirt. "I sorta… ran away. I don't like Smelly Gabe. He smells bad." The child waved a hand in front of his nose, waving away an imaginary stench. "But I wanna get back to my mom, even if I have to deal with him. You look really big, so can you help me find my way back? Please?" The child looked up with wide, pleading eyes.

Godzilla let out a puff of steam. He could… but that meant he had to do work for a lesser being. He was a King! The great King of Monsters, at that. He helped only himself, and the earth itself, wiping away those that dare poison it. Though, on second thought, if he was within the child, he could go ahead and see if the humans have polluted the earth again, and if they were a lost cause. Godzilla nodded to himself. Move aside, child.

"O-oh! Okay!" The child scrambled a few dozen meters away, and the ground around Godzilla's body started rumbling, shifting as the Kaiju stood.

Godzilla stood up slowly, and everything that had been built on top of him tumbled away, revealing a metallic-like hide, his skin shaped like thick tree bark, and there was dense musculature showing along his body. Massive maple leaf-shaped dorsal plates ran down his back in three rows, starting at the nape of his neck and going all the way down to the tip of his tail. His legs were huge, his toes looking like moss covered them, and both his legs and arms were human-like in appearance, and his face seemed to have a gentle and calm expression, and the teeth were infused with his skin, the jaw curving up, almost into a smile.

The child stared in awe as Godzilla rose to his full height of over three hundred meters, towering over the surrounding hills. Then Godzilla leaned down, holding a hand out to him to climb on, lifting the child to eye level.

What's your name, Little One?

"I'm Percy! What's yours?"

… I am Godzilla Earth. The Burning Mountain.

Manhattan, Metropolitan Museum of Art:

Percy had enough of Nancy Bobofit. That little shit kept throwing pieces of her sandwich - and ew, was that ketchup in a peanut butter sandwich? He finally lost it when a piece of it hit Grover's hair, sticking into his brown curls.

"That bit-"

Grover held him down, shutting him up with a hand over his mouth. "It's okay, I like peanut butter."

"But-"

"You're on probation already, Percy," Grover reminded. "You'll get blamed if anything happens."

Percy stewed in his seat, reluctantly following Grover's advice. Some steam escaped from Percy's nostrils as he contained his anger.

You should listen to your friends more, Little One.

Percy huffed in frustration. Fine.

Later, when they arrived at the museum, Mr. Brunner led the tour. He wheeled around the Greek and Roman exhibits, guiding the class through long corridors, marble busts of random people that were probably important, and cases filled to the brim with ancient tools and jewelry.

The class gathered first around a column with a sphinx on top, a girl carved into the column. A stele. Mr. Brunner droned on and on about the grave marker, and Percy zoned out, allowing Godzilla to help him remember what Mr. Brunner was talking about.

This was not what I imagined I would be doing when I entered your life, Little One.

Percy snorted in faint amusement, then noticed everyone was looking at him. Mr. Brunner looked at him with an eyebrow raised.

"Mr. Jackson, what is amusing to you?" he asked.

"Nothing, sir. Just thinking about something."

Mr. Brunner pointed at an image on the stele. "Perhaps you could tell us what this image is about?" he asked kindly.

Percy stared at the image. It was a carving of a large man opening his mouth wide, holding a small baby.

This is the Titan, Kronos eating his children, the gods…

Percy repeated Godzilla's explanation. "This is the Titan, Kronos, eating his children, the gods. His wife, Rhea, hid Zeus away in a cave, and brought a rock for Kronos to eat. And when Zeus grew up, he made Kronos eject his siblings from his stomach. Then he started a ten year war that the gods eventually won."

There were some snickers, and Nancy whispered into a friend's ear. "As if we'll need this in real life."

"Any why, Mr. Jackson," Mr. Brunner spoke, hearing Nancy, "to paraphrase Miss Bobofit's question, does this matter in real life?"

"Busted," Grover snickered.

"Shut up," Nancy said, her face turning redder than the ketchup in her shitty sandwich.

Percy thought for a moment, and hushed Godzilla before he could answer for him. He wanted to do this himself.

"Well," Percy brought a finger up to scratch behind his ear. "The Greeks made stories of the gods to make sure that they don't make mistakes themselves, so they could be good in life by making the right choices based on those stories."

"Excellent answer as expected, Mr. Jackson," Mr. Brunner praised. "Full credit. Now, on that note, let us depart for lunch. Mrs. Dodds, if you would kindly lead us outside."

The class drifted off, following Mrs. Dodds and Mr. Brunner outside, shoving each other and giggling.

Outside, overhead, a storm was brewing above Manhattan, swirling around the Empire State Building in an almost unnatural way. No one else seemed to mind it, all of them doing their own thing. Grover and Percy sat on the edge of a fountain, eating their lunches as they watched middle schoolers be idiots.

Percy tore through his lunch, scarfing down several cheeseburgers and downing half of his one gallon water bottle. He gave vegetarian enchiladas and his apple to Grover, who happily accepted the meal.

Percy looked towards Uptown Manhattan, sensing his mother and sister close by, just a mile away. He didn't want to disappoint either of them so he tried his hardest. And yet, this was his sixth school he'd attended. Percy sighed, and turned his gaze back towards the plaza.

He watched as Mr. Brunner sat in his wheelchair that Percy swore was a transformer, as it currently looked like a cafe table on wheels. Then, Nancy Bobofit walked up towards Percy and Grover with her friends, dropping her half-eaten sandwich into Grover's lap

"Oops," Nancy said, grinning as Grover looked at the abomination of a sandwich with shock. Percy stood up suddenly, towering above Nancy and her friends. They saw an apparition appear before them, and it opened it maw, and roared.

"Eek!" Nancy fell backwards into the opposite fountain, completely drenching her, even though it only touched her legs. Then she pointed at Percy. "Percy pushed me!" she shrieked.

Mrs. Dodds appeared out of nowhere next to Percy, making sure Nancy was okay, pulling her out of the fountain, then turned towards Percy. "Now, honey, come with me."

Percy nodded, and was about to go when Grover stepped between them. "It was me! I pushed Nancy."

Percy looked at Grover, before lifting him off the ground and setting him off to the side. "It's okay. We'll be back." Percy's voiced suddenly distorted at the last part, then he left, following Mrs. Dodds, who had materialized on top of the stairs, into the museum.

When Percy went into the museum, Grover decided to rush over to Mr. Brunner, who was reading a… manga?

Percy followed Mrs. Dodds into the Greek and Roman gallery, in front of a marble carving of the Greek gods, and she started growling.

"You've been giving us problems, honey," she said.

"Of course, ma'am."

She turned around, an evil fire burning in her eyes. "Did you really think you could get away with it?" she hissed.

"With what?" Percy asked in confusion.

Thunder shook the building, the thick window panes shuddering in their frames.

"We are not fools, Perseus Jackson," Mrs. Dodds said. "It was only a matter of time before we found you out. Confess, and you shall suffer less pain." She waited for a response, but there was none. "Well?" she turned towards him fully.

"I don't-"

"Time's up!" She hissed, her eyes starting to glow, her fingers turning into talons, and her jacket melting into large, leathery bat wings.

"Damn, you're even uglier now," Percy said bluntly.

"Graah!" Mrs. Dodds launched forwards, slashing her talons across Percy's chest. She smirked as she made contact… then screeched in pain as her talons broke against incredibly tough skin. "What is this?!"

"The power of a king," Percy said, his voice distorted, sounding like two voices speaking at once. One of a teenager, and one of an ancient being, yet powerful. "And now you die."

His clothes had been slashed beyond repair, and beneath was gnarled dark hide, shaped like tree bark, which was slowly receding to reveal unharmed, tanned skin layered over sculpted musculature. Then Mrs. Dodds felt something going into her back and out her front.

"How…" Mrs. Dodds then slowly turned to dust, her heart having been pierced by five long talons.

I always told you something was wrong with that teacher.

"I know, I know," Percy said, then frowned as he felt a sudden distortion in the air, which then faded away. "Did you sense that?"

Of course I did. Now let's head back outside, Little One.

Percy walked back outside, heading towards the fountain, where Grover snored, a map on his head, and Nancy was still soaking wet, chatting with her friends.

Nancy turned around to face Percy. "I hope Mrs. Kerr whipped your butt."

"Who?"

"Our teacher, duh!"

Percy turned towards Grover, asking about Mrs. Dodds, but Grover asked, "Who?"

Finally, Percy turned towards Mr. Brunner, and asked, "Sir. Where's Mrs. Dodds?"

Mr Brunner frowned. "Percy, as far as I know, there is no Mrs. Dodds in Yancy Academy. Are you feeling alright?"

There you go guys! Chapter 1 of the Advent of The Burning Mountain has broken through 2000 words! I hope you guys liked this chapter. Also, I don't think the beginning half was good, so please don't yell at me about the crappy intro. But, luckily I had my Beta to help. Also, as the story progresses, I'll reveal more and more about Godzilla's past in this story, and how he managed to merge with Percy. See you guys next time!

- spectre646