A/N: Alrighty, so this is a collab work between me and The Grinning Psychopath. This story is not OC centric, but he'll play an important role in this story. Don't worry, no romance between the OC and any rwby characters. So with that explanation done, enjoy the prolouge of Grimm awakening! And drop a review to let us know what you think :3

He flexed his jaw and lunged, sinking his teeth into his prey.

The training robot let out a muted sputter as its neck was caught between the sharp teeth, the connective wires responsible for movement severed as his attack had punctured the protective metal plate. Previously readied arms fell limply against its sides, and he bit down one last time, the loud crunch making the observers wince. Lips thinned into a barely visible smirk, he flung the training robot aside with a movement of his head.

"W-Well…" The scientist cleared his throat, eyeing the ravaged dummy that had landed at his feet. "It looks like the latest serum was a success." He looked down at his clipboard and began to write furiously.

"Subject has adjusted well, and displays a stronger–"

The subject in question quickly tuned the scientist's words out and began stretching, and pawing at the ground. He had dealt with the robots numerous times before. It was fun in its own way, but far from satisfactory. The robots lacked the proper responses that got his blood truly pumping. He needed to hurt something, to feel its life pulsing under his clawed hands, he needed the thrill of an actual kill, he needed-

He was abruptly wrenched free from his thoughts of what he needed, when the drone of the scientist grew sharply. When he looked up, he noticed that the scientist was looking quite crossly at him.

'Must have been asking me a question' he thought, 'Oh well…'

"We're done here." The scientist griped and waved his hand in a shooing motion. "Now get out."

"Finally. I wonder how you squints live down here, it's so boring." The reptile sighed. "Nothing tasty to eat, no prisoners to kill, no traitors to gut…"

"Well, that's your problem. Some of us actually use our brains to conquer instead of just mindlessly eviscerating our enemies."

"Eh." The subject shrugged. "Suit yourself. Killing just seems much easier to me." He said and walked towards the exit. He gave the training robot a hard kick, chuckling when the force of the kick separated the head from its neck, the ball of metal rattling noisily when it hit the wall. Seeing this, the scientist just sighed and shook his head in disdain.

"Not all of us are fiends like you…" He muttered as the hulking figure disappeared out of sight.

Subject 217 shouldered through the small wave of recruits, not bothering to step aside. More than a few of them walked straight into him, and they shrank into themselves in fear when he stared at them before mumbling a soft apology and running off.

'Ah…new blood.' He thought gleefully, staring at the retreating back of a small goat Faunus. 'I wonder how long they'll last this time…'

He continued strolling through the latest hideout located somewhere in the outskirts of Vale. The reptile cast a wordless gaze on the more familiar looking white fang members he passed, and they gave him a small nod of respect (fear) and continued on their way. He continued striding forward, his footfalls loud and menacing. His steady pace was never broken, almost all he encountered staying out of his way. And though some may mock him for leaving his back wide open, he didn't particularly care. There was never the need to look behind him, since none of the spineless fauni dared to go against him.

He knew what most of the White Fang thought of him.

Mindless, they said. Ruffian, beast, brute. The walls had mouths just as they had ears, but the reptile Faunus couldn't care less. He didn't need to prove anything to them, they were useless sacks of flesh that trembled as he walked by. They looked away from his piercing gaze, they were just as afraid of his shadow as they were, him.

The reptilian faunus didn't need to tell them about the human anatomy; which places to aim to cause the most pain, the numerous ways to stem a bleeding wound, how to break bones as easily as breaking sticks. He didn't need to tell them how he could break through the most intricate of firewalls, how he could steal military secrets without alerting the human scum. Subject 217 didn't owe the weak anything.

He grinned.

After all, those with weaknesses were always killed by the ones who lack them.