Cassiopeia Black FanFiction

glowing dreams and starry nights

glowing dreams and starry nights

F/F
F/M
M/M
G
Updated
13.04.2025
Fandom
Harry Potter - J. K. Rowling
Characters
Regulus Black/James Potter, Regulus Black, Sirius Black/Remus Lupin, Remus Lupin, Sirius Black, James Potter, Peter Pettigrew, Lily Evans Potter, Marlene McKinnon, Dorcas Meadowes, Neville Longbottom, Marlene McKinnon/Dorcas Meadowes,
Tags
Awkward Flirting Gender Dysphoria Everyone Needs A Hug Maybe - Freeform idk how to tag Trans Regulus Black Regulus Black and Sirius Black Angst like a lot bpd james potter theyre so gay painter Regulus Black Photographer James Potter
Reg sees James at a cafe and becomes obsessed and paints him all the time little does he know photographer James snapped a photo or twolots of gay chaosmaybe a happy ending if I'm feeling up to it
The Gamer Life of The Girl Who Lived - Part One

The Gamer Life of The Girl Who Lived - Part One

F/F
M/M
Multi
G
Updated
11.04.2025
Fandom
Harry Potter - J. K. Rowling
Characters
Original Female Character(s), Harry Potter, Sirius Black, Minerva McGonagall, Severus Snape, Draco Malfoy, Ron Weasley, Hermione Granger, Tom Riddle | Voldemort, Fred Weasley, George Weasley, Nymphadora Tonks,
Tags
Alternate Universe - Canon Divergence Alternate Universe Female Harry Potter Slytherin Harry Potter POV Original Female Character Half-Blood Hermione Granger Slytherin Hermione Granger POV Harry Potter Metamorphmagus Harry Potter Gamer Harry Potter Gamer fic Adopted Hermione Granger
At midnight on her 10th birthday, Violet Lily Potter wakes up to being hit in the face with a Diary and with no idea how it got into her locked cupboard. When she opens it to find a stat sheet about herself, she somehow knows her life will never be t...
Starfall

Starfall

F/M
G
Updated
13.04.2025
Fandom
Harry Potter - J. K. Rowling
Characters
Regulus Black, Harry Potter, Draco Malfoy, Lucius Malfoy, Nymphadora Tonks, Narcissa Black Malfoy, Luna Lovegood, Andromeda Black Tonks, Lucius Malfoy/Narcissa Black Malfoy, Pandora Lovegood, Pandora Lovegood/Xenophilius Lovegood, Arcturus Black III | Sirius Black's Grandfather,
Tags
Drowning Albus Dumbledore Bashing Regulus Black Lives Pandora Lovegood and Evan Rosier are Twins Book 1: Harry Potter and the Philosopher's Stone Animagus Regulus Black The Noble and Most Ancient House of Black Pandora Lovegood is a Rosier
Regulus dragged his hand into the water, splashing it up to his face, but before he could do anything else, a white, slimy hand reached out of the water and clamped itself around his wrist, dragging him forward.More hands joined, so many hands, clawi...
The truth of Joker.

The truth of Joker.

G
Updated
13.04.2025
Fandom
Harry Potter - J. K. Rowling Batman - All Media Types DCU
Characters
Regulus Black, Talia al Ghul, Sirius Black, James Potter, Lily Evans Potter, Narcissa Black Malfoy, Andromeda Black Tonks, Joker (DCU), Pamela Isley, James Potter & Lily Evans Potter, Cassiopeia Black, Pamela Isley & Joker (DCU)
Tags
Past James Potter/Lily Evans Potter Mentioned Jason Todd Sane Joker (DCU)
Where Joker learns who Robin number two was and James realises that he killed his nephew.
Again to the Light by The Windowsill

Again to the Light by The Windowsill

F/M
G
Updated
14.04.2025
Fandom
Harry Potter - J. K. Rowling
Characters
Original Female Character(s), Abraxas Malfoy, Orion Black, Alphard Black, Druella Rosier Black, Black Family (Harry Potter), Arcturus Black III | Sirius Black's Grandfather, Lucretia Black Prewett, Cassiopeia Black, Dorea Black Potter, Original Squib Characters (Harry Potter), Original Hogwarts Professors,
Tags
Blood and Violence I Wrote This Instead of Sleeping Albus Dumbledore Bashing Dark Magic Young Minerva McGonagall Alternate Universe - No Voldemort Pureblood Culture (Harry Potter) Pureblood Society (Harry Potter) The Noble and Most Ancient House of Black Black Family-centric (Harry Potter) Black Family Madness (Harry Potter) Young Tom Riddle
In this universe, the blacks will get another chance.In this universe, maybe they will stick together and maybe they will love each other more than politics.For them, nothing was ever set in concrete. Choices that lead to there downfall, the choices...
Josephine Potter 1981 - 1994.

Josephine Potter 1981 - 1994.

G
Updated
14.04.2025
Fandom
Harry Potter - J. K. Rowling
Characters
Regulus Black, Harry Potter, James Potter/Lily Evans Potter, Sirius Black, Hermione Granger, Bill Weasley, Fred Weasley, George Weasley, Alice Longbottom/Frank Longbottom, Frank Longbottom, Alice Longbottom, Original Potter Family Characters (Harry Potter),
Tags
Horcruxes Severitus | Severus Snape is Harry Potter's Parent Regulus Black Lives Good Fred Weasley & George Weasley Good Regulus Black Evan Rosier Lives Good Barty Crouch Jr. Half-Blood Hermione Granger Sane Bellatrix Black Lestrange Good Bellatrix Black Lestrange Harry Potter is Not a Horcrux Pandora Lovegood Lives
Where James Potter's cousin who is his sister through his mother blood adopting her and his aunt blood adopting him is the Heir of the Potter family who just so happened to be with Pandora Lovegood on the 31st of October 1981 and goes on to raise Har...
The Prodigal Children

The Prodigal Children

G
Updated
14.04.2025
Fandom
Harry Potter - J. K. Rowling
Characters
Remus Lupin, Sirius Black, Mary Macdonald (Harry Potter), Lucius Malfoy, Nymphadora Tonks, Narcissa Black Malfoy, Andromeda Black Tonks, Lucius Malfoy/Narcissa Black Malfoy, Walburga Black, Alphard Black, Cygnus Black III | Walburga Black's Brother, Andromeda Black Tonks/Ted Tonks,
Sirius is in jail. Something doesn't sit right in Andromeda and Alphard's mind. Sirius, the same kid who would throw a fit at the table when hearing the word "mudblood" is in jail for killing 12 muggles, and for betraying James Potter. Yeah, no, Alph...
Death comes to you, D

Death comes to you, D

F/F
F/M
M/M
Multi
G
Updated
14.04.2025
Fandom
Harry Potter - J. K. Rowling
Characters
Regulus Black/James Potter, Regulus Black, Sirius Black/Remus Lupin, Remus Lupin, Sirius Black, James Potter, Peter Pettigrew, Lily Evans Potter, Mary Macdonald (Harry Potter), Marlene McKinnon, Minerva McGonagall, Dorcas Meadowes,
Cassiopeia, the sister of Regulus and Sirius, comes again. I will write this fanfic in a different and more comprehensive way this time. Cassiopeia uses dark and ancient magic in this thing. Where did she learn it? I guess you'll need to read to find...
Different Choices

Different Choices

M/M
G
Updated
14.04.2025
Fandom
Harry Potter - J. K. Rowling
Characters
Original Characters, Harry Potter, Ron Weasley, Hermione Granger, Neville Longbottom, Fenrir Greyback, Goblins (Harry Potter), Cassiopeia Black
Tags
Fix-It Albus Dumbledore Bashing Work In Progress Necromancy Manipulative Albus Dumbledore Harry Potter Gets the Love He Deserves Harry Potter Has a Pet Snake Good Fenrir Greyback Harry Potter Leaves the Dursley Family Necromancer Harry Potter Harry Potter Gets a Hug Knockturn Alley (Harry Potter)
One different choice, just one, puts Harry Potter on an entirely new path in life. A path where he gets the help he needs and deserves with adults that actually do their jobs and with a Magical Guardian that is willing and able to truly keep him safe...
A Better Path for the Chosen One

A Better Path for the Chosen One

F/F
F/M
M/M
G
Updated
14.04.2025
Fandom
Harry Potter - J. K. Rowling
Characters
Original Characters, Harry Potter, Other Relationship Tags to Be Added, Remus Lupin, Sirius Black, James Potter, Lily Evans Potter, Minerva McGonagall, Severus Snape, Draco Malfoy, Ron Weasley, Hermione Granger,
Tags
Alternate Universe - Canon Divergence Character Bashing Other Additional Tags to Be Added Fluff and Angst Fix-It of Sorts The Author Regrets Everything Don't Like Don't Read Other Ships Not Mentioned in Tags The Author Regrets Nothing Rare Pairings On Hiatus Background Relationships
What if, instead of being caught completely unprepared when the Dark Lord Voldemort came for them that fateful Halloween night in 1981, Lily and James Potter had made a fail-safe plan for the worst-case scenario? What if they were more than just lovi...
I'm sorry

I'm sorry

F/F
F/M
M/M
G
Updated
14.04.2025
Fandom
Harry Potter - J. K. Rowling
Characters
Regulus Black/James Potter, Regulus Black, Remus Lupin, Sirius Black, James Potter, Peter Pettigrew, Lily Evans Potter, Mary Macdonald (Harry Potter), Marlene McKinnon, Dorcas Meadowes, Marlene McKinnon/Dorcas Meadowes, Evan Rosier,
Tags
Bipolar Barty Crouch Jr. Bipolar James Potter
This is a marauders UNI au. Cassiopeia Black is in it. Enjoy :)
A Systematic Exploration of the Various Categories of Magic and Their Pros and Cons, or: "Fuck Hogwarts, I want to learn the Dark Arts"

A Systematic Exploration of the Various Categories of Magic and Their Pros and Cons, or: "Fuck Hogwarts, I want to learn the Dark Arts"

Gen
G
Updated
14.04.2025
Fandom
Harry Potter - J. K. Rowling
Characters
Harry Potter, Sirius Black, Albus Dumbledore, Andromeda Black Tonks, Sirius Black & Harry Potter, Ted Tonks, Arcturus Black III | Sirius Black's Grandfather, Cassiopeia Black, Harry Potter & Black Family
Tags
Female Harry Potter Sane Voldemort (Harry Potter) Harry Potter Goes to a Different School Harry Potter is the Heir to the House of Black Harry Potter is the Heir to the House of Potter Good Albus Dumbledore Durmstrang Student Harry Potter Focusing on Magic in this story First story - we'll see how it goes but not good voldemort
Alya Lyra Black-Potter (certainly not Potter-Black, no sir) had lived a tumultuous life by the time she took her first steps, and there was no indication that the rocking waters would settle anytime soon.What did you really expect a child raised by t...
Who is it

Who is it

F/F
F/M
M/M
Multi
G
Updated
14.04.2025
Fandom
Harry Potter - J. K. Rowling
Characters
Regulus Black, Remus Lupin, Sirius Black, James Potter, Peter Pettigrew, Marlene McKinnon, Minerva McGonagall, Frank Longbottom, Alice Longbottom, Albus Dumbledore, Cassiopeia Black
Tags
ghostface - Freeform
Basically it's Ghostface at Hogwarts and this starts the 19th may of 1975. Our dear Cassy, Regulus and Sirius's sister, takes the case under her wings when Alice Fortescue and Frank Long bottom die. We see Cassiopeia get mad and mader. For the rest,...
Never again and Evermore

Never again and Evermore

F/M
Gen
G
Updated
14.04.2025
Fandom
Harry Potter - J. K. Rowling Naruto (Anime & Manga)
Characters
Harry Potter, Sirius Black, Draco Malfoy, Hermione Granger, Neville Longbottom, Albus Dumbledore, Minor or Background Relationship(s), Hatake Kakashi, Black Family (Harry Potter), Arcturus Black III | Sirius Black's Grandfather, Cassiopeia Black, Potter Family Portraits (Harry Potter),
Tags
Alternate Universe - Canon Divergence Slow Burn Arranged Marriage Powerful Harry Potter Female Harry Potter Reincarnation Pureblood Culture (Harry Potter) Pureblood Politics (Harry Potter) Worldbuilding Morally Ambiguous Character Pureblood Society (Harry Potter) Title from a Taylor Swift Song
Hatake Kakashi died in one world and Lupus Sirius Black woke up in another. A child again, but with a lifetime of memories, he didn't expect much from the world. Holly Dorea Potter grew up in a world always looking out for the next bad thing coming h...
I am Lady Slytherin

I am Lady Slytherin

G
Updated
14.04.2025
Fandom
Harry Potter - J. K. Rowling
Characters
Tom Riddle | Voldemort, Albus Dumbledore, Gellert Grindelwald, Cassiopeia Black, Theseus Scamander, Armando Dippet, Nagini (Harry Potter), Volina Elinor Riddle (Fem!Voldemort), Theec Headtaker, Thikkit Claw, Thot the Unclean, Jaqueline/Jack the Ripper/The Red Lady,
Tags
Alternate Universe Female Voldemort (Harry Potter) Young Tom Riddle There are two Voldemorts! Chaos caused by another Riddle taking things from other Universes Skaven Species (Warhammer Fantasy) mentions of other universes using things from other universes lots of murdered OC's Warhammer shennagins multiple flashbacks
The Riddles have been dead for a week before another one shows up, and she's clearly related somehow. Only problem? This isn't a Voldemort that lost, she won because someone stopped her from completing another plan. So, she's here to cause as much ch...
The First Day of School for Cassiopeia Black

The First Day of School for Cassiopeia Black

G
Updated
15.04.2025
Characters
Albus Dumbledore, Cassiopeia Black, Pullox Black, Callidora Black
{Team Captain of The Caerphilly Catapults! Round 8 of The Quidditch League FanFiction Competition!Writing for Beater 1. Black Family Challenge: Cassiopeia Black}
The Purest One - Part One

The Purest One - 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, Lucius Malfoy, Narcissa Black Malfoy, Albus Dumbledore, Blaise Zabini, Theodore Nott,
Tags
Slytherin Harry Potter Pureblood Harry Potter Pureblood Hermione Granger Weasley Family Bashing (Harry Potter) Slytherin Hermione Granger Black Hermione Granger Adopted Hermione Granger Cassiopeia is Hades' Heir & Half-God Magical Pins Half-Blood Ron Weasley Half-Blood Ginny Weasley Pureblood Weasley Twins
A revelation from Hermione in Diagon Alley finally explains the existence of Squibs to the Purebloods and gives them a way to prove their Blood Purity. This, alongside Cassie's arrival, will change the Wizarding World and its future forever.
blood on my finger tips(--fingertips against your cheeks)

blood on my finger tips(--fingertips against your cheeks)

F/F
F/M
Gen
M/M
Multi
Other
G
Updated
15.04.2025
Fandom
Harry Potter - J. K. Rowling
Characters
Regulus Black, Original Female Character(s), Original Male Character(s), Harry Potter, Remus Lupin, Sirius Black, James Potter, Peter Pettigrew, Lily Evans Potter, Marlene McKinnon, Severus Snape, Draco Malfoy,
Tags
Albus Dumbledore Bashing Female Harry Potter Regulus Black Lives Black Family Drama (Harry Potter) Manipulative Albus Dumbledore James Potter Lives Good Peter Pettigrew The Noble and Most Ancient House of Black Black Family-centric (Harry Potter) BAMF Regulus Black Black Family Feels (Harry Potter) Dark James Potter
"The Black Magick had chosen a new Lord."-☆°Hogwarts watches the might of the Noble and Most Ancient House of Black, and trembles beneath the show of their power.Or-In which Hogwarts watches and learns the truth beneath the webs of white light lies. ...
The Noble and Most Ancient House Of Black

The Noble and Most Ancient House Of Black

F/M
Multi
G
Updated
15.04.2025
Fandom
Harry Potter - J. K. Rowling
Characters
Regulus Black, Sirius Black/Remus Lupin, Sirius Black, Narcissa Black Malfoy, Andromeda Black Tonks, Bellatrix Black Lestrange, Lucius Malfoy/Narcissa Black Malfoy, Marauders (Harry Potter), Cassiopeia Black, Orion Black/Walburga Black, original female character/Andrew avery, andrew avery
Tags
Gay Sirius Black Pureblood Society (Harry Potter) The Noble and Most Ancient House of Black
if Sirius and Reg had a younger sister.....
The Noble House of Madness

The Noble House of Madness

Gen
G
Updated
17.04.2025
Fandom
Harry Potter - J. K. Rowling
Characters
Regulus Black, Sirius Black, Narcissa Black Malfoy, Andromeda Black Tonks, Bellatrix Black Lestrange, Walburga Black, Orion Black, Alphard Black, Cygnus Black III | Walburga Black's Brother, Pollux Black, Arcturus Black III | Sirius Black's Grandfather, Lucretia Black Prewett,
Tags
Original Character(s) Headcanon Short One Shot Pureblood Culture (Harry Potter) LGBTQ Character Black Family Drama (Harry Potter) Pureblood Society (Harry Potter) Black Family-centric (Harry Potter) Squibs (Harry Potter) Seer Belvina Black Burke Vampire Black family they are not really vampires but i love thinking about it
The Black family is not as good as they show. Which one of them has the biggest secret?Or the headcanons of a random person from the internet about a family they have a hyperfixation in.