Slytherin Original Character(s) FanFiction

Gamer Cassiopeia Black - Part One

Gamer Cassiopeia Black - Part One

G
Updated
13.04.2025
Fandom
Harry Potter - J. K. Rowling
Characters
Original Female Character(s), Harry Potter, Minerva McGonagall, Draco Malfoy, Ron Weasley, Hermione Granger, Tom Riddle | Voldemort, Albus Dumbledore, Blaise Zabini, Theodore Nott, Pansy Parkinson, Rubeus Hagrid,
Tags
Alternate Universe - Canon Divergence Alternate Universe POV Original Female Character Gamer fic Slytherin Original Character(s) Gamer Original Female Character(s)
After dying, a girl is given the option to start a new life in another Universe. However, her new life is a game that she gets to create. After customising the Harry Potter Universe to her liking, she starts her new life. How will her changes and her...
Blood Runs Thicker Than Water - Harry Potter AU

Blood Runs Thicker Than Water - Harry Potter AU

F/F
F/M
M/M
Multi
G
Updated
14.04.2025
Fandom
Harry Potter - J. K. Rowling Harry Potter: Hogwarts Mystery (Video Game)
Characters
Original Characters, Harry Potter, Severus Snape, Draco Malfoy, Ron Weasley, Hermione Granger, Lucius Malfoy, Fred Weasley, George Weasley, Narcissa Black Malfoy, Luna Lovegood, Original Female Character(s)/Original Female Character(s),
Tags
Slow Burn Other Additional Tags to Be Added Alternate Universe Work In Progress Fae & Fairies This Is Why We Can't Have Nice Things Slytherin Original Character(s) Not Canon Compliant - Harry Potter and the Prisoner of Azkaban like so slow it hurts Draco Malfoy's Older Sister Fae Harry Potter Inaccurate Ancient Celtic Religions & Lore
Faye Malfoy is often described to be as beautiful as a poisonous flower. Enchanting, breathtaking, almost dreamlike, but something about her feels unnatural. From her eerie similarities to her Grandmother Caitria, rumors surrounding the Malfoy family...
The Black heir

The Black heir

F/M
G
Updated
14.04.2025
Fandom
Harry Potter - J. K. Rowling
Characters
Harry Potter, Sirius Black, Draco Malfoy, Draco Malfoy & Harry Potter, Sirius Black & Harry Potter, Slytherin Students, Harry Potter & Jack Black, Sirius Black & Jack Black, Draco Malfoy & Jack Black, Jack Black(OC)
Tags
Original Character(s) Original Character-centric Slytherin Harry Potter The Noble and Most Ancient House of Black Slytherin Original Character(s)
Jack James Black is the son of Sirius Black, adopted into a muggle family and best friend of Harry Potter. Together, they will rise through the ranks of slytherin house
The Fall

The Fall

Gen
Multi
Other
G
Updated
14.04.2025
Fandom
Harry Potter - J. K. Rowling
Characters
Original Characters
Tags
Original Character(s) Original Character-centric Hogwarts Alternate Universe - Harry Potter Setting Alternate Universe - Hogwarts Slytherin Original Character(s)
Dramatic Slytherin alert, whooo! Next generation side character lets goooo!
The gates to the soul, and the looks of a thousand ghosts (Traduction)

The gates to the soul, and the looks of a thousand ghosts (Traduction)

F/F
F/M
M/M
G
Updated
14.04.2025
Fandom
Harry Potter - J. K. Rowling
Characters
Peter Pettigrew, Minerva McGonagall, Lucius Malfoy, Ginny Weasley, Fred Weasley, Narcissa Black Malfoy, Luna Lovegood, Bellatrix Black Lestrange, Sirius Black/Severus Snape, Rubeus Hagrid, Draco Malfoy & Harry Potter, Hermione Granger & Harry Potter & Ron Weasley,
Tags
Alternate Universe - Canon Divergence Slow Burn Original Character(s) Other Additional Tags to Be Added Mpreg Bottom Severus Snape Severitus | Severus Snape is Harry Potter's Parent Pureblood Culture (Harry Potter) Morally Grey Albus Dumbledore Sirius Black & James Potter Friendship Major Original Character(s) Remus Lupin Needs a Hug
After the Dementor attacks the Hogwarts train, Harry and the others barely make it to the castle safely, yet his encounter with the Azkaban guardians leaves him too tired, so he is not paying attention to the sorting ceremony. Lost in thought as McGo...
Treasure Hunter you are dead, The light of the world is fading.

Treasure Hunter you are dead, The light of the world is fading.

F/M
M/M
G
Updated
14.04.2025
Fandom
Harry Potter - J. K. Rowling
Characters
Harry Potter, James Potter/Lily Evans Potter, Sirius Black, James Potter, Lily Evans Potter, Minerva McGonagall, Draco Malfoy, Ron Weasley, Hermione Granger, Albus Dumbledore, Blaise Zabini, Voldemort (Harry Potter),
Tags
Other Additional Tags to Be Added Eventual Romance Tags May Change Unreliable Narrator Tags Are Hard Dark Magic Reincarnation Pureblood Politics (Harry Potter) Original Female Character(s) - Freeform Necromancy Gryffindor Harry Potter Wizarding Politics (Harry Potter)
Curses can be a meddling thing, specifically if you're bloodline is cursed so that you get reborn every few generations.OrThe Potters don't know the extent of their family curse aside from their untameable hair, but one does. And she hopes that maybe...
Not A Dark Lord : Ignotus

Not A Dark Lord : Ignotus

M/M
G
Updated
14.04.2025
Fandom
Harry Potter - J. K. Rowling
Characters
Original Characters, Original Female Character(s), Original Male Character(s), Severus Snape, Lucius Malfoy, Bill Weasley, Original Muggle Character(s), Albus Dumbledore, Original Male Character/Original Male Character, Original Character(s)/Original Character(s), Weasley Family (Harry Potter), Black Family (Harry Potter),
Tags
POV Original Character Gay Gay Male Character Gay Character Wizarding World (Harry Potter) Slytherin Good Slytherins Dark Magic Pureblood Culture (Harry Potter) Hogwarts First Year Filipino Character Weird Plot Shit
Kingston Antonio Avery hoped for nothing more than a peaceful first year. Maybe little bumps in the road but that's only to be expected. He is, after all, only starting his career as a student in Hogwarts.He wished upon every star that nothing ridicu...
INIMICUS, sirius black

INIMICUS, sirius black

F/M
Gen
Multi
G
Updated
14.04.2025
Fandom
Harry Potter - J. K. Rowling
Characters
Regulus Black, Remus Lupin, Sirius Black, James Potter, Peter Pettigrew, Severus Snape, Draco Malfoy, Sirius Black/Original Female Character(s), Walburga Black, Orion Black, Black Family (Harry Potter), James Potter/Original Character(s),
Tags
Friends to Lovers Dysfunctional Family Eventual Romance Fluff and Angst Enemies to Friends to Lovers Character Study Enemies to Lovers Enemies Morally Ambiguous Character Original Female Character(s) - Freeform Regulus Black Needs a Hug The Noble and Most Ancient House of Black
In a world where deception ruled, Nadia Chernova reigned as queen, her every move a calculated step in the game of survival. But it truly was a shame - a queen was still a chess piece, susceptible to the poisonous desires of the world. Nadia Chernova...
That One Time my Bestie was Sorted to Slytherin

That One Time my Bestie was Sorted to Slytherin

Gen
G
Updated
15.04.2025
Fandom
Harry Potter - J. K. Rowling
Characters
Harry Potter, Draco Malfoy, Ron Weasley, Hermione Granger, No Romantic Relationship(s)
Tags
Major Original Character(s) Slytherin Original Character(s) Ravenclaw Original Character(s) theres like 3 plots in here if u want a good story then I've got something great for you unfortunately no ships jaja
(This is not started yet. I am still in the planning phase, but once I finish it I'll post chapters weekly. I'd estimate there will be around 50 chapters, but they'll be short so it won't be that long. Stay tuned!! ^^)My mouth gaped wide open at her....
A Different Path - Part One

A Different Path - Part One

G
Updated
15.04.2025
Fandom
Harry Potter - J. K. Rowling
Characters
Original Female Character(s), Harry Potter, Minerva McGonagall, Severus Snape, Draco Malfoy, Ron Weasley, Hermione Granger, Albus Dumbledore, Blaise Zabini, Rubeus Hagrid, Hogwarts Staff, Gregory Goyle,
Tags
Alternate Universe - Canon Divergence Alternate Universe Slytherin Harry Potter POV Original Female Character Half-Blood Hermione Granger Slytherin Hermione Granger Smart Harry Potter POV Harry Potter POV Hermione Granger POV Ron Weasley Slytherin Original Character(s) Slytherin Ron Weasley
Hermione wanted to be the best, to gain all the knowledge she could, to prove her worth as HIS heir.Harry wanted friends, to explore this strange new world, to prove to the Dursleys or rather himself, that he wasn't a worthless freak.Ron wanted to be...
Stuck in between

Stuck in between

F/M
G
Updated
15.04.2025
Fandom
Harry Potter - J. K. Rowling
Characters
Harry Potter, Minerva McGonagall, Severus Snape, Ron Weasley, Hermione Granger, Fred Weasley, George Weasley, Angelina Johnson, Oliver Wood, Cedric Diggory, Fred Weasley/Original Female Character(s), Lee Jordan,
Tags
Fluff Slow Burn POV Female Character Eventual Smut Tooth-Rotting Fluff First Kiss First Time Slow Romance Happy Ending POV First Person Prank Wars Insomnia
Two souls meet at Hogwarts’ train and that’s how this new friendship was made. One which came with two other boys and every drama that’s going to happen. Popular, jokers, and athletes. How could they meet the shy and quiet one? And how could they sta...
Cassiopeia Addams and the Giant Snake

Cassiopeia Addams and the Giant Snake

G
Updated
15.04.2025
Fandom
Harry Potter - J. K. Rowling
Characters
Original Female Character(s), Harry Potter, Minerva McGonagall, Severus Snape, Draco Malfoy, Ron Weasley, Hermione Granger, Neville Longbottom, Albus Dumbledore, Blaise Zabini, Gilderoy Lockhart, Theodore Nott,
Tags
Slytherin Harry Potter Slytherin Original Character(s) Slytherin Neville Longbottom Lost Puppy Harry Potter Lost Puppy Neville Longbottom Wednesday Addams Has a Sister
Cassiopeia Addams returns to Hogwarts for her second year, has fun solving the mystery of the Chamber of Secrets and rescues Harry from the Dursleys.
Cassiopeia Addams and the Red Rock

Cassiopeia Addams and the Red Rock

G
Updated
15.04.2025
Fandom
Harry Potter - J. K. Rowling
Characters
Original Female Character(s), Harry Potter, Minerva McGonagall, Severus Snape, Draco Malfoy, Ron Weasley, Hermione Granger, Neville Longbottom, Albus Dumbledore, Blaise Zabini, Theodore Nott, Pansy Parkinson,
Tags
Slytherin Harry Potter Slytherin Original Character(s) Slytherin Neville Longbottom Lost Puppy Harry Potter Lost Puppy Neville Longbottom Wednesday Addams Has a Sister
The Addams Family were some of Voldemort's biggest supporters. Morticia is the mother of his child and takes in Cassiopeia Merope Addams when he dies. Despite not having Magic, the Addams' aren't Human. Cassie is the first Addams to ever attend Hogwa...
The Time-Travelling Heir

The Time-Travelling Heir

F/F
Multi
G
Updated
15.04.2025
Fandom
Harry Potter - J. K. Rowling
Characters
Regulus Black, Original Female Character(s), Harry Potter, Minerva McGonagall, Draco Malfoy, Ron Weasley, Hermione Granger, Lucius Malfoy, Ginny Weasley, Neville Longbottom, Tom Riddle | Voldemort, Nymphadora Tonks,
Tags
Slytherin Original Character(s) Quidditch Player Original Character(s) Hermione Granger is a Member of the House of Black Hermione Granger Scores a Black Sister Hat Trick Voldemort is Hermione Granger's Parent Hermione Granger Is Original Female Character Regulus Black is Hermione Granger's Parent Quidditch Captain Bellatrix Black Lestrange Quidditch Player Bellatrix Black Lestrange Quidditch Chaser Bellatrix Black Lestrange Quidditch Chaser Original Character(s) Hermione Jean Granger Is Cassiopeia Merope Narcissa Riddle-Black
Hermione Granger gets sent back in time during the Battle of the Department of Mysteries. Only, she's never really been Hermione Granger. This gives her a way to be herself. Cassiopeia Merope Narcissa Riddle-Black. What happens when she finds herself...
The Story of Isabella Morningstar

The Story of Isabella Morningstar

F/F
Multi
G
Updated
12.04.2025
Fandom
Harry Potter - J. K. Rowling
Characters
Original Female Character(s), Loki, Draco Malfoy, Tom Riddle | Voldemort, Narcissa Black Malfoy, Andromeda Black Tonks, Bellatrix Black Lestrange, Pansy Parkinson, Rita Skeeter, Hogwarts Staff, Daphne Greengrass, Hogwarts Students,
Tags
POV Original Female Character Slytherin Original Character(s) Quidditch Player Original Character(s) Parent Hades Half-God Original Character(s) Parent Voldemort (Harry Potter)
Hades tells his daughter about her other father, Tom Marvolo Riddle, and decides that she should go to Hogwarts so she can learn about the other side of her.
The Harry Potter Game

The Harry Potter Game

F/F
Multi
G
Updated
12.04.2025
Fandom
Harry Potter - J. K. Rowling
Characters
Original Characters, Original Female Character(s), Original Male Character(s), Harry Potter, Fleur Delacour, Draco Malfoy/Harry Potter, Draco Malfoy, Ron Weasley, Hermione Granger, Tom Riddle | Voldemort, Narcissa Black Malfoy, Andromeda Black Tonks,
Tags
Slytherin Harry Potter POV Original Female Character Slytherin Hermione Granger Slytherin Original Character(s) Quidditch Player Original Character(s) Voldemort is a Parent Harry Potter Gamer Fic Gamer fanfiction Harry Potter is a Game Slytherin Ron Weasley Voldemort Has Triplets Slytherin Original Female Character(s)
When Cassiopeia and her triplet siblings, Alexandra and Hydra, die, all they see is darkness and large, white words hovering in the air in front of them that says 'GAME OVER'. They have no idea what's going on but soon discover that they can live ins...
Twisted Fascination

Twisted Fascination

G
Updated
18.04.2025
Fandom
Harry Potter - J. K. Rowling
Characters
Original Female Character(s), Original Male Character(s), Harry Potter, Remus Lupin, Sirius Black, Severus Snape, Draco Malfoy, Tom Riddle | Voldemort, Albus Dumbledore, Blaise Zabini, Theodore Nott, Daphne Greengrass,
Tags
Manipulative Albus Dumbledore Slytherins Being Slytherins Slytherin Politics Slytherin Original Character(s)
Perhaps choosing a Dark Lord, specifically the one that killed my parents, to be fascinated with wasn't my best idea. However, I couldn't help myself upon hearing about his feats and power. Maybe I am twisted, just like other people say. One thing th...
A Different Path Part 2

A Different Path Part 2

G
Updated
18.04.2025
Fandom
Harry Potter - J. K. Rowling
Characters
Harry Potter, Ron Weasley, Hermione Granger, Original Character (Crystalline Gray)
Tags
Slytherin Harry Potter Slytherin Hermione Granger Slytherin Original Character(s) Slytherin Ron Weasley Toxic Parent-Child Relationship clingy friendship
The BlackLights tackle another year at Hogwarts.What are the murmurs, the hisses, and what is wrong with Ginny Weasley..........
Wild Amenity

Wild Amenity

M/M
Multi
G
Updated
18.04.2025
Fandom
Harry Potter - J. K. Rowling
Characters
Original Characters, Remus Lupin, Sirius Black, James Potter, Peter Pettigrew, Lily Evans Potter, Lyall Lupin, Severus Snape, Marauders (Harry Potter), Hope Lupin, Remus Lupin/Original Male Character(s)
Tags
Fluff Friends to Lovers Fluff and Humor Humor Fluff and Angst Secret Relationship Friendship/Love Secret Crush Marauders Era (Harry Potter) Bisexual Remus Lupin Remus Lupin & Lily Evans Potter Friendship Daddy Issues
Judson Ogden had a secret: he was completely head over heels for Remus Lupin. He couldn't help it—it was a lost cause. But Remus had a secret of his own: he had fell for his best friend, Sirius Black. That was until he messed up, and Remus found that...
Badgers vs Serpents

Badgers vs Serpents

G
Updated
19.04.2025
Fandom
Harry Potter - J. K. Rowling
Characters
Original Female Character(s), Original Male Character(s), Neville Longbottom, Zacharias Smith, Susan Bones, Hannah Abbott/Neville Longbottom, Hannah Abbott, Ernie Macmillan, Justin Finch-Fletchley, Hannah Abbott/Susan Bones, Hannah Abbott & Original Female Character(s)
Tags
Injury Quidditch Slytherin Original Character(s) Hufflepuff Pride Slytherin Pride Slytherin Quidditch Team Hufflepuff Quddich Team
Zacharias Smith recruits Hannah Abbott as Hufflepuff Keeper for the upcoming game against Slytherin after the Hufflepuff keeper gets an injury, Hannah agrees but when doing so putting herself head to head with her best friend, the captain of the Slyt...