Hello and welcome to a new fanfic. It's October and I'm in a spooky mood. To my knowledge, this idea hasn't been done. I couldn't get this idea out of my head after reading a few crossovers. Now, let's get to it.

As usual, I own nothing.


"And this concludes the will reading of Sirius Orion Black."

A young bespectacled girl with messy black hair, emerald green eyes and a lightning bolt shaped scar sits on the backyard porch of #4 Privet Drive with a blank expression on her face. If one were to look closer, they would see the tranquil fury hidden within those eyes.

This girl is Harriet Potter. The so-called Girl-Who-Lived.

You may ask why Harriet was so angry. That is because she found out that some of the people she trusted had been manipulating her for years.

For as long as she could remember, Harriet had always wondered if she was loved by her parents. When she was a year old, she lost her parents to a wizard terrorist. Afterwards, Harriet was placed with her "relatives", the Dursleys. In her time there, she was little more than a slave. Forced to cook, clean and do chores no child should do. Not to mention that her aunt and uncle spread rumors that Harriet was a troublemaker and the girl had to hold back her intelligence so as to not outshine her pig of a cousin.

Then came her eleventh birthday. Harriet learned that she was a witch and that the Dursleys lied about her parents dying in a car crash. The raven-haired girl was then sent to the school her parents attended. ...And things didn't get better for her.

Harriet had to deal with the unwanted fame of being the sole survivor of the killing curse, teachers who either hated her because of her parents, wanted her dead or use her for their own purposes. Year one, Quirrellmort. Year two, an incompetent fraud of a a teacher who was also a pedophile, a giant basilisk and a shade of her parents' murderer. Year three, a semi-sane godfather, the man who really betrayed her family and dementors. Year four, being forced into a tournament that was originally banned because of it's high mortality rate and the resurrection of Voldemort. But it would be Harriet's fifth year that things came to a head.

A smear campaign was going on thanks to the idiots in the ministry of magic. Harriet had announced that Voldemort had returned, resulting in the death of Cedric Diggory. Many claimed the raven-haired girl was a lying attention seeking brat. Most of those comments came from her fellow students. At this point, Harriet was wondering why she kept coming to Hogwarts. Oh yeah, because it's slightly better than the Dursleys. On top of that, Delores Umbridge was appointed as the new DADA teacher by the ministry. It was no secret that the woman was out to get Harriet and when she finally had her in detention, the woman used blood quills. The merlin damned things are illegal!

Then came the visions. Harriet had to endure visions of Voldemort's activities in the magical world. The ravenette may have saved Arthur Weasley's life, but she couldn't save Sirius. Her uncle was killed and sent into the Veil of Death by Bellatrix Lestrange. Voldemort had even puppeteered Harriet's body for a bit before she broke free. And afterwards, Albus-to-many-names Dumbledore made his entrance. Unfashionably late as usual.

After chasing Voldemort off and proving to the magical community that the dark lord had returned, the headmaster had explained his reasons for isolating her. The ravenette paid him no mind. The only thing that was going through Harriet's mind was that the last member of her family that gave a damn about her... was gone. That was two months ago. Harriet had just came back from the will reading and learned that the bad news wasn't over.

Sirius had revealed that Harriet's so-called headmaster was using her as a pawn. One that was to be sacrificed for the "greater good". Dumbledore was setting Harriet up as a martyr. And in the event that the ravenette hadn't died by Voldemort's hand, a marriage contract between her and Ron Weasley was drawn up. A contract approved by Dumbledore and Molly Weasley! Which explains why the Weasley matriarch was trying to push the two together and why Ron had got it into his head that they would be married. To hell with that! They just wanted her family fortune! Thankfully, Sirius took care of that.

Sirius' last act was to have Harriet emancipated while naming her Lady Black. The illegal marriage contract was revoked and the ravenette was now considered an adult. While Harriet was thankful, she was more focused on the fact that people she trusted had been using her. Dumbledore tried to save face but it proved to late. Ron was beaten by not only Harriet, but also Hermione and Luna. The latter of which was Harriet's known girlfriend. As for Molly Weasley, her oldest twins, Fred and George, along with her daughter, Ginny turned their backs on her. The only other person Harriet's age that didn't betray her was Neville Longbottom.

All of these events had led Harriet to this point. Luckily, the Dursleys had decided to take trip without her. Again. Though to be fair, Harriet wasn't in the mood for their bullshit and probably would've hex them. Statute of Secrecy be damned.

"All this time..." Harriet says with a snarl. "They were just using me! All I wanted was a family that loved me. I never asked to be the "Girl-Who-Lived". And those idiots turn on me at the drop of a hat. Well, I'm done with their bullshit. I'm done with the Dursleys, Dumbledore, Voldemort, everything!"

With a scream, Harriet let's a few angry tears flow. After a moment, she wipes her tears away and stands up.

"I'm not going back to Hogwarts." Harriet says. "Let "The Great Albus Dumbledore" deal with old snake face. I'll finish my schooling somewhere else. Maybe Beauxbatons. At least they have muggle courses."

With that said, Harriet turns around and heads back inside the house. Unknown to her, something was watching her from a nearby fence. One of miss Figg's cat's to be exact. However, this cat was staring at Harriet intensely. To make it more ominous, the cat's eyes seemed to turn a sinister white for a moment.


Later that night, Harriet can be seen sleeping in her room. Thankfully after her first year at Hogwarts, she couldn't stay in the cupboard under the stairs anymore and was given Dudley's second bedroom. Harriet's nightwear consisted of a over-sized white shirt and shorts. In her sleep, the ravenette was tossing and turning with a pained look on her face. She was having nightmares. However, this left her unaware of the danger closing in on her.

The cat from earlier today had snuck in through the window thanks to a nearby tree. The second it entered, Harriet's beloved snowy owl, Hedwig shrieked. Her instincts telling her that the cat wasn't normal. Her warning comes too late for as soon as Harriet woke up, a black ooze sprang from the cat and attached itself to her as the cat fled.

"Merlin's bread!" Harriet exclaims. "What is this thing!?"

Harriet struggles to get the substance off her but it seemed like the more she struggled, the stronger the substance became. Soon, the ooze had covered the raventte's feet.

"Damn it!" Harriet exclaims while struggling.

The ravenette reaches for her wand on her nightstand, but the ooze snatches her hand away from it while binding her other hand! Harriet could do nothing but scream as black tentacles lunge at her. Then it all went black.


In a white room, a man with snake-like features is seen covered in a black robe. Glaring at seemingly nothing.

"Who dares intrude on my vessel?" The snake man asks.

Suddenly, the same black ooze from before seeps into every corner of the room with tentacles waving about. At the center, a mass of the ooze morphs into a formless figure with tear marks for eyes.

"We dare, leech." The ooze says with a deep booming voice.

The snake man snarls at the ooze. "You dare call me, Lord Voldemort, a leech?!"

"That is all you are to us." The ooze says. "Nothing but a leech feeding off our host."

"I have been within this girl since she was an infant, monster." Voldemort says with a scoff. "She shall serve as my vessel once I've taken her over. Then I shall rule the magical world. Not that other me on the outside." The Voldemort fragment smirks. "How fitting for the magical world's "savior" to be the one that dooms them all."

"Wrong" The ooze says. "You shall endanger our host no longer."

"You cannot expell me without the girl dying." The Voldemort fragment says smugly.

"Wrong again." The ooze says while encroaching around the soul fragment. "You shall be consumed by us. Your knowledge and power shall remain to empower our host."

The black ooze latches on to the Voldemort fragment, who flings every curse he knows at it. However, the black substance proves to be too strong. After all, a fragment of a soul is just that, a fragment.

"N-no!" The Voldemort fragment exclaims fearfully. "You can't do this to me! I am-!

The Voldemort fragment is interrupted as the main body suddenly appears in front of him. A thin line then appears where a mouth would be before opening wide to reveal a set of sharp teeth.

"Food." The ooze says with a menacing and sinister grin.

The soul fragment barely got time to scream before the large black mass eats his head. It then proceeds to eat the rest of the soul fragment.

At the same time, unknown to Harriet, a black mist vanishes from her scar with a shriek of pain. Said scar then heals. Leaving the ravenettes skin unblemished and a new wellspring of magic.


Harriet snaps back to consciousness and realizes that the black substance is keeping her in place! The ravenettes eyes widen in fear and realization.

"No!" Harriet screams.

Harriet struggles as black tentacles lift her into the air. To her shock and dread, the tentacles rip her clothes off. Leaving her naked as the day she was born. Exposing her low C sized bust and core. The tentacles then began to stimulate the ravenette. She shudders at the uncomfortable feeling. Harriet's breathing became erratic as the tentacles moved all over her body. Slowly, the ravenette starts to calm down as a new feeling begins to take over. Pleasure. Harriet found that she couldn't resist anymore. Whatever this thing was, it wanted her. Completely. And for a girl who was deprived of any type of affection since she was a child, it was too much to take.

Suddenly, one of the creatures tentacles latches on to the back of Harriet's head. Her eyes widen before glazing over. Unknown to the girl, the creature was reading her memories as it continues to massage her body. Harriet let's out an oragsmic moan as the creature wraps around her breasts. The creature continued to grope and suck the ravenettes body. Harriet's nipples stiffen at the creatures touch as the girl herself continues to moan in ecstasy. A tentacle then launches itself down Harriet's mouth, going deeper and deeper into her body.

The creatures tentacles squeeze the ravenettes butt before one of it's appendages wriggles in front of her while another positions itself at her butt. Without warning, the black appendages launch themselves into Harriet's ass and vagina. The ravenette gives a muffled scream of pain and pleasure. Her hips buckling as she squirts, making the creatures tentacles wet and allowing them further entry. The creature pistons inside Harriet's inner walls, giving her orgasm after orgasm.

Harriet was in complete ecstasy. Her mouth, breasts, vagina, ass. Every part of her body was being worked by the creatures tentacles. Unknown to Harriet, the creature was also healing her body. The years of malnutrition was soon replaced with a healthy toned figure. The ravenettes low C sized breasts grew to an impressive DD, her hips, waist and ass grew and her eyesight improved to the point that she no longer needed glasses. Even her height increased, making her 5'8 in place of her original 5'5. Harriet would soon be a wet dream to many. But it wasn't just her body that was being improved. Harriet's mind was also expanding. Along with her magic. Every emotion the ravenette had buried deep within her was coming to the front.

After another orgasm, the creatures tentacles suddenly retract from Harriet's body. The ravenette breathes heavily as she raises her head to the creature. It stood there, watching her. For Harriet though, she had a feeling as to what the creature wanted. And more importantly, what she wanted. In some part of Harriet's mind, the last pieces of resistance crumbled as she spoke two words.

"Take... me." Harriet begs with a smile.

Not needing to be asked twice, the creatures tentacles lunge at Harriet. Entering every entrance she had while simultaneously bringing her to nonstop climax. And Harriet loved every bit of it. As evident with her erotic facial expression and the large pool of liquid on her bed.

As it continued to bring Harriet to climax after climax, the creature begins to encase itself on her body. It flowed into Harriet's hair, making it more luxurious and manageable while also growing it out. From her feet to her torso, the creature covered the ravenette with itself. For Harriet, nothing else mattered besides the the pleasure she was experiencing. As the creature encases her head, the ravenettes smile became sinister as she gives one more orgasmic scream. Leaving a large black mass.

Soon, the black mass begins to recede into Harriet's body. Forming around her body and curves. The black mass becomes a smooth and comfortable skintight bodysuit with thin white streaks, similar to veins along her entire body. The suit also exaggerates other features while leaving nothing to imagination. Harriet's body showed through the suit. Though her butt and hips were more noticeable. Her new breasts becoming gravity defying and flattering. The girls fingers became elongated claws that could easily tare someone's throat out and her feet gained claws as well. From her face, two white tear marks appear as her mouth opens with a roar. Revealing her sharp teeth and long red snake-like tongue.

What now stood in Harriet's place wasn't the prophesied savior of the magical world, but another being entirely.

Before the creature could move, she hears the sound of Hedwig shrieking. Suddenly, the creature begins to writhe in pain at the high pitched sound. The mask part of the creatures face then comes off, revealing a screaming Harriet.

"AHHH!" Harriet shrieks along with the creature in a mature voice. "Hedwig, STOP!"

Seeing the face of her mistress, Hedwig stops shrieking. She then stares questionably at Harriet.

With her owl quiet, Harriet takes a few deep breaths.

"Bird is loud." A voice says in Harriet's mind.

"I know." Harriet says. "But-"

Harriet gasps in shock before looking around.

"W-w-who said that?" Harriet asks.

"We did." The voice replies.

A stream of black ooze flows off of Harriet and morphs into the monstrous mask she wore.

"Hello, Harriet." The creature says.

Harriet's eyes widen as she stares at the creature while taking a step back. After a few moments, all the ravenette could say is...

"Wicked..." Harriet says breathlessly.

"You don't seem afraid." The creature says.

"Oh, I'm absolutely gobsmacked." Harriet says. "But I've seen a lot of weirdness before you."

"We know." The creature says.

Harriet eyes the creature. "What are you?"

"We are... Venom." The creature says. "And you are ours."

"Ours?" Harriet asks with a raised eyebrow. "What do you mean?"

"We are a symbiote." Venom says. "An extraterrestrial organism that must have a host to survive. Think of yourself as our ride."

"Extraterrestrial?" Harreit asks with wide eyes. "An alien parasite?"

"Parasite!?" Venom exclaims in anger while moving to it's host face.

Harriet frantically waves her hands. "Whoa, whoa! I-I'm sorry!"

Harriet suddenly blinks in confusion as she looks at her hands. She then notices the changes to her body. Even gives her now large bosem a squeeze while blushing.

"What happened to me?" Harriet asks.

"Part of our bonding." Venom says as it's new host looks at herself in a mirror. "Your body was lacking for our taste. We have improved on it."

Harriet's eyes twitch in indignation. "Well, sooorry! You can take it up with my bloody "relatives"."

Harriet then notices something in her reflection. Or rather, something missing as she brushes her bangs.

"Hey, my scar is gone!" Harriet says in astonishment.

"Yes." Venom says. "The leech was... unpleasant."

"Leech?" Harriet asks while glancing at the symbiote.

"There was another soul inside your head." Venom says. "It sought to take over. We could not allow that. As we said, you are ours."

"A soul?" Harriet asks. She then groans while holding her head as an influx of knowledge suddenly comes to her. "A... Horcrux. Why do I know that term?"

"We have absorbed the power and knowledge of the leech and have given it to you." Venom says. The symbiote then licks it's face with a sinister smile. "The leech was... delicious."

"So that explains the connection between me and him." Harriet says. She then scoffs. "Well, thanks for that. Not like I needed that snake wearing my body like a cheap suit. But what about you? Why me?"

"You called." Venom says. "You did not find us, Harriet. We found you. Your anguish. Your rage. It led us to you."

"So you feed on negative emotions?" Harriet asks with an edge to her voice.

"We prefer flesh." Venom says. It then side glances Hedwig. "Which reminds us, we are hungry. Eat the bird."

Hedwig gives a shocked squawk.

"No!" Harriet says. "You're not eating Hedwig! She been my friend since I was eleven!"

"WE ARE HUNGRY!" Venom exclaims.

"NO!" Harriet screams with a glare.

Venom growls at it's host before seemingly pouting. "Would've tasted like chicken."

Harriet sighs before using a quick Scourgify spell to clean her bed. She idly notices that she can use wandless magic before sitting on her bed.

"So, what now?" Harriet asks while looking at the symbiote. "What do you want?"

"The better question is; What do you want?" Venom asks. "With us, we can do anything we want. Whatever we want." Venom moves closer to Harriet as the girl looks away with a conflicted expression. "We can have our revenge."

"What?" Harriet asks in shock.

"We are in your head, Harriet." Venom says. "We know everything about you. You lost your parents when you were an infant. Was forced to be a slave for those that were supposed to care for you. Forced into a role you wanted no part in. Constantly almost dying. Lost those you cared for. Been betrayed by those claiming to be your friend."

"Stop." Harriet says in softly. "I-I-I'm not-"

"We know what you really think." Venom interrupts. "You plan on leaving but deep down you know they won't let you go. They will drag you back to be their sacrificial pawn. If you are lucky. Otherwise marry you to that red-headed weasel."

Harriet's eyes dart around, trying to deny what the symbiote was saying. However, Venom doesn't let up.

"We will never be free so long as those who seek to control or hurt us remain." Venom says.

"Stop it!" Harriet exclaims. "Stop making me sound like him!"

"Like who?" Venom asks.

"Like Voldemort!" Harriet exclaims. She then shakes her head in denial. "I'm not like him. ...I'm not."

Venom remains silent as it watches it's host break down. From her memories, the symbiote knew that most in magical Britain claim Harriet to be as dark as Voldemort. After a few more moments, Venom speaks.

"You are right." Venom says. "You are not like him."

Harriet looks up to see Venom grinning right in her face.

"You are better." Venom says. "Why else would he fear you? Your heard the prophecy yourself. "The one with the power to vanquish the Dark Lord approaches...and the Dark Lord shall mark her as his equal but she shall have power the Dark Lord knows not...For neither can live while the other survives..." He fears you because he believes you can kill him. And now... you can."

Harriet's eyes widen in surprise.

"Look at youself, Harriet." Venom says, causing it's host to examine her body. "Look at what we can become. Together, we can be great. Deep down, you want us. Just as we want you." Venom shudders with a moan. "And let's face it, you enjoyed are bonding." At Harriet's blushing face, Venom continues. "Feel the power we have. Let the true you that you've kept inside be free. The Hat was right, Harriet. You aren't a Gryffindor."

Harriet stares at Venom with an unreadable expression.

Venom's grin widens as it feels Harriet's emotions. "You are... a Slytherin. Much better that that worm, Malfoy."

Harriet lowers her head. Venom stares at it's host as she thinks. However, the symbiote knows what Harriet's decision will be. It can feel it. Because of Venom's biology, the symbiote knows that it does indeed feed on negative emotions and can be influenced by them. But with Harriet, it was different. It wasn't just hatred and rage it felt from her. There was also longing, desire and much more. It didn't take much to influence the raven haired witch. Deep down, she was suppressing who she really is. Who she really wanted to be.

Harriet raises her head. Revealing her sinsiter grin. "Sounds like we have work to do."

Venom matches Harriet's grin. "Yes, we do."

Venom merges back with Harriet. The new union was finally one.

"Let's raise some hell." She Venom says with a sinister grin.


And done. Whoo, I had to go to a dark place for this. Let it be known that I don't condone rape of any kind. My inspiration for this came from stories like Venom Kunoichi and The Cure. Both are Naruto crossovers. Unfortunately, one is discontinued while the other unfinished. For this fic, Harriet will be playing the role of lethal protector. But first she has to get rid of the people who want her dead or as a pawn. So, while Harriet won't be a hero, she won't be a villain either.

Next chapter, She Venom attacks. Until then, ja nee!