RWBY and related characters belongs to RT (Rooster Teeth) and (by extension) Warner Bros. PJO (Percy Jackson and the Olympians) and associated characters and stories belong to Rick Riordan and Hyperion Books and (by extension) The Walt Disney Company.

The young girl did not know where she was. Even then, it looked strangely familiar.

Was this... Emerald Forest?

After being struck, she had no clue how she was alive. She should be dead! After all, hadn't she just... disintegrated? Or was this the afterlife? Had she been saved at the last minute? Just what had happened?

Whatever her train of thought was, however, was interrupted when the sound of four legs running reached her ears. "Grimm..." she thought, scrambling to her feet before realizing she was completely undressed. Had it not been for the fact she was in dire straits now, she would've looked for the nearest piece of fabric to cover herself. Thankfully, she realized her mantle was laying on the floor. The red-headed girl took a hold of it and wrapped it around her torso, thankful it was long enough to act as an impromptu cloak, she then took a battle stance... before realizing she no longer was armed.

Her lack of weapons made her mind race even faster as the quadrupedal steps grew louder, guttural roaring now becoming evident around her. "I need a weapon! A pike, a knife, anything!" she thought to herself before her eyes fell on the thin gray wiring behind her. "Perfect!" she told herself as she called upon it.

With a wave of her hand, a whole section of the wiring —which had been part of a small fence protecting what looked like a vineyard— flew straight towards her hands right as a gargantuan black wolf Grimm emerged from the shadows of the trees lining up the forest. The girl's battle instincts saving her life from being taken again as she sidestepped the Beowolf's onslaught. The wire flew from her hands, wrapping around the animal's neck as she held one end in her hand, pulling upon it with all her might as the black wolf monster dissolved into thin air. The girl found the way the animal vanished strange though. "Are Grimm supposed to dissolve upon dying?" she couldn't remember. However, when a second Beowolf attempted to rip her throat off, she ducked and repeated the motion she did with the first one, this time pulling so strongly she lost her balance and fell down on the forest floor, panting. The clearing she was in was silent now, however. It was over. "It's over now..." she thought again as she could feel her thoughts calming down. However, the sudden assault and her initial confusion made her feel wearier than she normally would have, so she couldn't help herself when she felt her eyes start to close on their own.

The Invincible Girl, Champion of Mistral and Defender of Beacon, Pyrrha Nikos, did not make an effort to fight back... And thus she fell into unconsciousness.

When the news arrived at the camp, it was already midnight. This wasn't surprising.

Most demigods were already used to their kind barely making it to the camp. It was pretty much to be expected with new and first time arrivals and the new one had arrived during Summer, which was essentially "demigod open season".

So many were surprised when they saw that the girl was almost completely naked, draped in only a red mantle that covered her like a dress. More shocking was the scarlet red color of her hair, as long and red as the cloth she was covered with. Despite this, there were no signs of blood anywhere, though it was clear she had fought something off, judging from the footprints and the fact there was a length of steel wiring which seemed to have been bent into a circular shape... as if she had attempted to strangulate something with it.

When Chiron arrived, the culprit of the battle had been established officially, even if the gargantuan, canine footprints left little to the imagination.

"Hellhounds..." the Centaur said, looking in the direction where the footprints came from. He then turned down to look at the girl. She was tall and powerfully built. Less so than Clarisse, who was the Camp's resident 'big girl', but there were visible signs of battle. The hardened skin of her hands and the unusual bulk of her frame, the traits of a fighter. Chiron was briefly reminded of Thalia Grace upon seeing her. They seemed to be more or less the same.

A blonde boy walked closer to Chiron, taking a hold of the girl's body and turning it around to look for any potential wounds. None, not even light scratches. Whoever she was, she had been strong enough to fight a Hellhound off with only a steel wire and not get even a single wound.

Will Solace looked up at Chiron, "She's clear. No wounds whatsoever, not even internal..." he said as he stood up and walked back to the rapidly growing gathering of half-bloods, "she's probably just tired." the blonde boy concluded.

Chiron leaned in a bit closer, his eyes wondering to where she had ripped the wiring, before grabbing the wire in his own two hands. His face betrayed a look of unusual confusion that wasn't as common as one might think, at least when it came to the old Centaur.

"But this... this isn't even razor wire. How could she kill two Hellhounds with it..." he told himself, "...she must be really strong to have just strangled them to death."

A female voice then rose above the dulled murmurs of most campers in the small gathering, "do you think she might be related to the Big Three?"

Chiron shook his head, "I don't think so Piper. She looks strong, but I can't help but feel she's a bit different than what we've come to expect from the Big Three."

After saying that, the Centaur knelt down and picked the girl up in both of his arms, before motioning to Will with his head, "we'll need you to be on duty just in case Will... and please, don't go running off into the forest with Nico this time."

The blonde teen just smiled, walking back with his hands folded behind his back towards the Big House. "That was just once. I swear..." he said before excusing himself and running off towards the building. Chiron sighed before looking at the girl in his arms again, shaking his head before addressing the gathered campers.

"Ok everyone! Back to your usual stuff. I'll make sure to inform the Cabin Leaders as soon as she wakes up."