Grimm Lord

Harry Potter X RWBY

Chapter 3 released 11/3/2020

Summary: When Ron and Hermione leave Harry alone in the Forest of Dean, Harry's dark thoughts trigger him to awaken the power he knows not. The power to create and control the Grimm, a species of his own dark creativity and imagination.

1997 Unknown Date

It had been some time since his 'friends' Ron and Hermione had abandoned him in the Forest of Dean after they decided that he was useless to lead them and had no clue how to actually destroy the horcrux. It wasn't like Dumbledore told him how to destroy them or where they were located.

Harry doubted that Ron was influenced by the Slytherin's locket horcrux and just decided he wasn't happy being second fiddle to Harry Potter.

What had surprised him though wasn't Ron being Jealous and deciding to leave. But rather Hermione being the one who initiated the betrayal and made snide remarks about him.

The people who swore they would help him through these dark times had left him alone. Alone against the Death Eaters, alone to hunt and destroy the horcruxes, and alone to fight Voldemort.

He was forced to take on the burdens that no child should ever have to.

He was expected to save the entire populace of magical Britain, yet they so easily turn on him constantly.

If they wanted salvation why didn't they do anything themselves, they heavily outnumbered the Death Eaters. Had a large majority of the wizarding world risen up to combat the Dark Lord then the first war wouldn't have happened in the first place.

If only the populace wasn't full of blood supremacists, sheep and corrupted bigots. He may have had a happy childhood if they were competent enough to realize this.

Harry wanted to utterly destroy Voldemort and his minions. He wanted to set an example of them.

But most importantly he wanted revenge against the Dark Lord who had caused him no end of grief.

3 Days Later

Three days had passed by slowly with no form of entertainment or anyone to communicate with. Just Harry and his thoughts that proceeded to gradually grow darker by every passing hour.

His subconsciousness told him just to destroy the horcrux with a certain spell. The killing curse, the instant death curse was capable of destroying a horcrux and so was Fiendfyre. But he was unsure if he could cast the spells required for it.

But finally after three days with his malicious thoughts, he had grasped the beginning of an idea.

Voldemort spreads fear through the wizarding communities with his power, and power was the key to this plan.

He would create a race of monstrous beings that would feed off negative emotions.

A race that comes in shapes and sizes, one that could spread true fear and confusion within the ranks of Voldemort's subordinates.

A race created from his imagination using the complex rune formulas Hermione had left behind. His superb transfiguration skill, his knowledge of the dark arts, time and most importantly raw power.

Each of those key elements would create this new race of apex predators. Each of these beings he would create would strike fear into his enemies.

Finally he began to start creating these beings.

2 Days Later

He had finally created the first of these new beings after tirelessly working.

An elongated snout filled with large razor sharp canine fangs and a bone mask. Glowing red eyes and markings from the runes that allows the creature to move and hunt. A large bipedal werewolf-like body with shaggy black fur and bone protrusions in their back, shoulders and knees and razor sharp claws in its arms and legs.

The beast was finally created, a beast that he had named a Beowolf.

Now he had to start producing them in bulk in order to win the second war no matter the cost.

To these new beasts was quite simple once a person realized it, all it really took was time, power and skill.

The runic formula Hermione had left behind told him how to amass the infinite living energy from within nature and harness it into a form.

Harry had no doubt that Hermione was planning to use this somewhere down the road for whatever purpose she had for it.

"Better keep this for himself." Muttered the Chosen One as he tucked the papers into his mokeskin pouch.

Harry used his transfiguration prowess to form the shape and texture that would create the Beowolfs body.

He remembered how stiff the movements of Remus Lupin were when said werewolf had lost control. So using that knowledge he thought of a way to remove that weakness from his creation while keeping its innate strength and beastial instinct.

Finally all he had to do once that was done, was to apply the raw magic into another of Hermione's runic formulas.

Once all those steps were completed all he had to do was wait for the Beowolf to be completed. Once completed the creature would go into a nearby cave and wait for him to give it orders.

5 Days Later

Harry had finally created a couple packs of Beowolves, 36 to be exact. He had also created a larger, stronger and most importantly a deadlier variant to the Beowolf. The Alpha Beowolf, 6 Alpha's to lead a pack.

The Alpha Beowolf was twice as big as a regular one, sharper claws and teeth and stronger limbs, the true mastery piece of his Beowolves.

But that wasn't the full extent of what he did in the past five days.

Harry had also created a singular massive avian creature that could transport himself and the Beowolves.

This creature's creation was similar to the Beowolf's creation except the time and power used for its creation is far more taxing. This monster he had created was called a Nevermore which was also capable of using it's feathers as spears.

It was finally time to hunt the Snatchers and Death Eaters.

"Voldemort." The Grimm Creator spoke as the cracks of apparition were heard by the edge of the forest.

Just enough time for a pack to begin it's hunt.

Throwing on his invisibility cloak, Harry Potter watched the madness that would follow.

The Snatchers didn't know what hit them, first they were given an assignment to hunt down the people that spoke the taboo.

But what they saw confused them. They were in a forest in the middle of the night with no one in sight.

Within a minute of them arriving at the forest they immediately felt anti apparition wards go up keeping them trapped in the forest.

"Where are they?" Muttered one of the Snatchers.

"Quiet, they're here somewhere." Spoke the Snatchers cell leader.

Unknown to them they were being watched by the Beowolves, each starting to move into position to rip them apart.

That's when they heard the twisted howling of the beast that sent shivers down there spin and fear to worm into their hearts.

They heard the dreadful snarling of the monsters before seeing them.

Their glowing red eyes and snarling snouts with large canines ready to rip them to shreds.

They pounced while the Snatchers were too busy observing them to notice until it was too late.

They were all ripped to shreds with some of the limbs of the deceased Snatchers still in the mouths of the beasts.

Harry would proceed to speak the taboo multiple times to get the Beowolves ready for a larger prize.

1 Week Later

To say Voldemort was furious was an understatement. He was seething with rage and had killed 10 of his Snatchers because of the news he was hearing.

He had just learned that his Snatchers and Death Eaters were being killed by werewolves. Werewolves that were in service to him, the most feared Dark Lord of the century.

He would have to assemble the inner circle and get to the bottom of this.

1 Day Later

The inner circle had convened at Malfoy Manor to discuss the situation with the betrayal committed by the werewolves.

Antonin Dolohov, Augustus Rookwood, Avery, Bellatrix Lestrange, Corban Yaxley, Crabbe Sr, Goyle Sr, Lucius Malfoy, Nott, Rabastan Lestrange, Rodolphus Lestrange, Severus Snape, Travers, Walden Macnair and Wormtail. Each of these Death Eaters had arrived and were awaiting their lord to begin.

"My friends, how wonderful it is to see you all once more." Hissed the Dark Lord.

"We have traitors in our midst, the werewolves. Those beasts have started to kill our loyal Death Eaters." Spoke the Dark Lord.

Finally Fenrir Greyback had joined the inner circle at Malfoy Manor.

"Milord I'm here as requested, need me to kill someone?" Questioned the Werewolf Leader.

"No, not right now Fenrir. I have a predicament that I hope you can solve. You see some of my Death Eaters have been killed in a strange way, the way an animal rips apart a person, a werewolf." Spoke the Dark Lord.

"Milord I have no clue what you're talking about, none of my pack are traitors." Stuttered the Werewolf.

But it was at that time, that the sound of powerful wings could be heard flapping and the howling of the wolves sounded from the surrounding grounds.

The Inner Circle had rushed outside to defend their lord against the beast but it was for naught.

The Beowolves had ripped their way through the Death Eater guards at the entrances to the Manor and had begun to attack the Inner Circle and Voldemort himself.

Lucius Malfoy was the first to go, an Alpha bit his head clean off as the surrounding Death Eaters watched in shock. Then everything descended into chaos.

Bellatrix was decapitated by a Nevermores feather which also pierced her body leaving her impaled into a wall, Nott's throat was slit and an arm was ripped from the socket, Fenrir had tried to fight against an Alpha but he was quickly ripped limb from limb.

Augustus and Travers were being eaten by the Grimm while they screamed for mercy, Wormtail had tried to shift into his animagus form but was also bitten in half and instantly died, Snape was impaled by the claw of two Beowolves through the chest which slowly killed him.

The rest of the Inner Circle soon followed the others in a gruesome death, finally all that was left standing was the Dark Lord Voldemort.

"Such fascinating creatures are they not, Tom." Mocked the voice of Harry Potter.

"Harry Potter, Dumbledore's Golden Boy, a ruthless killer. You were a fool to come here and now you shall die." The Dark Lord roared as he fired raw lightning from his wand at the Chosen one, only to be intercepted by a Beowolf causing it to fade into dark particles.

"These are called Beowolves, a creature of my own design and they serve an extra purpose aside from killing my enemies." The Chosen One spoke as one of the Beowolves bit off the wand arm of the Centuries most terrifying dark wizard.

"Whoever they kill will have their soul destroyed, all pieces of their soul." The Golden Boy laughed at the horror stricken face of his enemy as the weight of his words sunk in.

But it was too late the entire Beowolf populace had pounced, each vying to get a piece of the dying Voldemort who screamed and thrashed as he was eaten alive.

"Huh I guess I won the war." The Hero spoke before walking away with his Grimm in tow.

Now all he had to do was announce his victory and settle down while creating new Grimm.

1 Year later

The year was now 1998 and Harry had made plenty of progress in regards to all aspects of his life. He had created 3 types of new Grimm and variants for some. The Ursa, a bear-like creature with immense strength that was the size of a smaller troll. The Ursa also had a variant called the Ursa Major, larger and heavily armored compared to its weaker counterpart. The Sabyr, another of his creations based off the Tiger with massive fangs that he could ride, this one had no variant though. The last of the Grimm he had created was called a King Taijitu, a snake-like Grimm that he could speak to. With a massive body, enormous fangs and a deadly venom that was almost comparable to the basilisk's venom this was a force to be reckoned with. To top off this particular beast's ingenuity, it had two heads with the same deadly traits.

But that wasn't all he had done, with the fallout of his friends no longer wanting to be his friends and Ginny and him no longer dating, Harry got drunk at the Three Broomsticks and woke up married.

Damn his Potter Luck.

Third chapter is up

Hope you guys like it and please review it helps me out if I know what I did wrong.