Regulus Black & Sirius Black are Twins FanFiction

You'll Find Your Way Home

You'll Find Your Way Home

G
Updated
14.04.2025
Fandom
Harry Potter - J. K. Rowling
Characters
Regulus Black, Sirius Black/Remus Lupin, James Potter/Lily Evans Potter, Remus Lupin, Sirius Black, James Potter, Lily Evans Potter, Mary Macdonald (Harry Potter), Marlene McKinnon, Minerva McGonagall, Dorcas Meadowes, Marlene McKinnon/Dorcas Meadowes,
Tags
Child Murder Murder Past Child Abuse Implied/Referenced Suicide Self-Harm Childhood Trauma Drug Use Trauma Mental Health Issues Child Abuse Underage Drinking Regulus Black & Sirius Black Have a Good Relationship
(inspired by descendants)Despite growing up on the Isle her entire life, the young woman is happy. She's met and married her true love, has two little boys who she loves more than anything, and has some money for the first time in her life.Perhaps he...
The Water Is Fine

The Water Is Fine

Multi
G
Updated
14.04.2025
Fandom
Harry Potter - J. K. Rowling
Characters
Regulus Black, Remus Lupin, Sirius Black, James Potter, Peter Pettigrew, Lily Evans Potter, Regulus Black & Sirius Black, Regulus Black/Original Male Character(s), Orion Black & Regulus Black & Sirius Black & Walburga Black, Remus Lupin/Original Male Character(s), Sirius Black/Original Male Character(s), Original Dumbledore Family Characters (Harry Potter)
Tags
Alternate Universe - Canon Divergence Original Character(s) Other Additional Tags to Be Added Short POV Original Character I'm Bad At Tagging Slow To Update Marauders Era (Harry Potter) Bisexual Remus Lupin Regulus Black & Sirius Black Have a Good Relationship Sirius Black Lives Remus Lupin Lives
It had to be them. It had to be these two boys. Only these two teenage boys knew the ins and outs of how awful the world could be. They knew that if their parents and these death eaters stayed in power, nothing would have changed. Sirius knew that he...
Change the Prophecy

Change the Prophecy

F/F
M/M
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,
Tags
Not Canon Compliant First Wizarding War with Voldemort (Harry Potter) Pandora Lovegood and Evan Rosier are Twins Horcrux Hunting Morally Grey Regulus Black Morally Grey James Potter Morally Grey Evan Rosier Morally Grey Barty Crouch Jr. Regulus Black & Sirius Black are Twins Regulus James Barty and Evan infiltrate the Death Eaters There’s a lot of morally grey going around you get the drift
“Being courageous is something you have to make the conscious choice to do and do you know what, Regulus? Making that decision is never going to be easy but we do it because you could have the best plan, the best ideas and the best of intentions but...
Something Great

Something Great

F/F
F/M
M/M
Multi
G
Updated
14.04.2025
Fandom
Harry Potter - J. K. Rowling
Characters
Regulus Black/James Potter, Sirius Black/Remus Lupin, Marlene McKinnon/Dorcas Meadowes, Barty Crouch Jr./Evan Rosier, Pandora Lovegood/Lily Evans Potter, Mary Macdonald/Emmeline Vance, Alice Longbottom/Narcissa Black Malfoy, Barty Crouch Jr./Peter Pettigrew/Evan Rosier, Peter Pettigrew/Evan Rosier, Barty Crouch Jr./Peter Pettigrew
Tags
Fluff Alternate Universe - Modern Setting Texting Alternate Universe - Muggle No Smut Regulus Black & Sirius Black Have a Good Relationship Everyone Is Gay Pandora Lovegood and Evan Rosier are Twins Barty Crouch Jr. is a Little Shit like a lot Regulus Black and Sirius Black Both Run Away Everybody Lives
The marauders and co return to Hogwarts for their sixth year ready to start a new chapter in their lives.
¿Cuál gemelo Black soy?

¿Cuál gemelo Black soy?

M/M
G
Updated
15.04.2025
Fandom
Harry Potter - J. K. Rowling
Characters
Regulus Black/James Potter, Regulus Black, Sirius Black/Remus Lupin, Remus Lupin, Sirius Black, James Potter, Regulus Black & Sirius Black, Sirius Black & James Potter, Regulus Black & Remus Lupin
Tags
No Smut Regulus Black & Sirius Black Have a Good Relationship Funny Regulus Black & Remus Lupin Friendship Sirius Black & James Potter Friendship No Angst Switching Regulus Black & Sirius Black are Twins
Sirius y Regulus cambian de lugares de vez en cuando sin decirle a nadie, cuando esto involucra a sus respectivos novios esto se sale de control.Sirius no sabe que su mejor amigo sale con SU hermano pequeño ( por 4 minutos) y Regulus no sabe que Siri...
The tortured poets department

The tortured poets department

F/F
F/M
M/M
G
Updated
15.04.2025
Fandom
Harry Potter - J. K. Rowling
Characters
Regulus Black/James Potter, Regulus Black, Sirius Black/Remus Lupin, Remus Lupin, Sirius Black, James Potter, Lily Evans Potter, Mary Macdonald (Harry Potter), Marlene McKinnon, Minerva McGonagall, Severus Snape, Dorcas Meadowes,
Tags
Marauders Era (Harry Potter) Marauders Hogwarts First Wizarding War with Voldemort (Harry Potter) Regulus Black is a Little Shit Pandora Lovegood and Evan Rosier are Twins 70s Regulus Black and Sirius Black Angst first fic Pandora Lovegood and Evan Rosier are Siblings Regulus Black & Sirius Black are Twins pre first wizarding war
“Friends break up, friends get buried. Strangers get born, strangers get buried. Trends change, rumours fly through new sky’s but I’m right where you left me.”A long fic about ALL the marauders era characters, multi POV.
Mermaids aren't real James

Mermaids aren't real James

F/F
M/M
G
Updated
15.04.2025
Fandom
Harry Potter - J. K. Rowling
Characters
Regulus Black/James Potter, Regulus Black, Sirius Black/Remus Lupin, Remus Lupin, Sirius Black, James Potter, Lily Evans Potter, Marlene McKinnon, Severus Snape, Dorcas Meadowes
Tags
Childhood Trauma Alternate Universe - Muggle Everyone Is Gay Regulus Black Needs a Hug Regulus Black and Sirius Black Both Run Away Sirius Black is a Little Shit Sirius Black Needs a Hug Disabled Remus Lupin Regulus Black & Sirius Black are Twins mermaid Regulus black or merman? I don't know Marine Biologist James Potter Merman Sirius Black
James is a marine biologist and Regulus is a captured merman.
a sirius boggart

a sirius boggart

G
Updated
15.04.2025
Fandom
Harry Potter - J. K. Rowling
Characters
Remus Lupin, Sirius Black, James Potter, Peter Pettigrew, Lily Evans Potter, Sirius Black & Remus Lupin & Peter Pettigrew & James Potter, Hogwarts Students
Tags
Implied/Referenced Torture Implied/Referenced Child Abuse I Wrote This Instead of Sleeping google translate French Regulus Black French Sirius Black Boggarts (Harry Potter) Regulus Black & Sirius Black are Twins this might be a tough one sorry i dont know french french people forgive me pls
Brother Mine

Brother Mine

Gen
G
Updated
15.04.2025
Fandom
Harry Potter - J. K. Rowling
Characters
Regulus Black, Sirius Black/Remus Lupin, Remus Lupin, Sirius Black, James Potter, Lily Evans Potter, Regulus Black & Sirius Black, Evan Rosier, Pandora Lovegood, Sirius Black & James Potter, Sirius Black & Remus Lupin & Peter Pettigrew & James Potter, Regulus Black & James Potter,
Tags
Angst Whump Emotional Hurt/Comfort Flashbacks Panic Attacks French Regulus Black French Sirius Black Good Regulus Black Sirius Black is Bad at Feelings French Evan Rosier Sirius Black Tries to Be a Good Sibling Sirius Black Needs a Hug
After Sirius ran away, his boggart wasn't quite what he was expecting it to be.WhumpTober 2023!Day 10: Broken Phone | Stranded | "You said you'd never leave."
I Solemnly Swear That I Am Up To No Good

I Solemnly Swear That I Am Up To No Good

Multi
G
Updated
15.04.2025
Fandom
Harry Potter - J. K. Rowling
Characters
Original Characters, Regulus Black/James Potter, Sirius Black/Remus Lupin, James Potter/Lily Evans Potter, Remus Lupin, Sirius Black, James Potter, Peter Pettigrew, Lily Evans Potter, Mary Macdonald (Harry Potter), Marlene McKinnon, Severus Snape,
Tags
Angst Not Canon Compliant Polyamory Fix-It Crack Treated Seriously Love Marauders Era (Harry Potter) Marauders Everyone Is Gay Somebody Lives/Not Everyone Dies Welsh Remus Lupin Desi James Potter
In 2009, a study revealed that most friendships last about seven years. Thankfully for the Marauders, their story begins before 2009, and none of them ever read that study.This is the first fic in my quest to fix Harry Potter. It's going to be very l...
The Life of Atticus Black

The Life of Atticus Black

F/F
F/M
M/M
Other
G
Updated
15.04.2025
Fandom
Harry Potter - J. K. Rowling
Characters
Regulus Black, Original Female Character(s), Original Male Character(s), Sirius Black/Remus Lupin, James Potter/Lily Evans Potter, Sirius Black, James Potter, Peter Pettigrew, Lily Evans Potter, Mary Macdonald (Harry Potter), Marlene McKinnon, Severus Snape,
Tags
Fluff Angst Alternate Universe - Canon Divergence Swearing Implied/Referenced Child Abuse POV Multiple Bad Writing Everyone Is Gay Asexual Character Alternate Universe - Everyone Lives/Nobody Dies I Tried Desi James Potter
Atticus Black and his siblings finally join Hogwarts after a difficult 5 years.I will be honest, I am making all of this as I go, I am not entirely sure who Atticus will end up with, you'll have to find out. However, I do plan on having Atticus end u...
why remus hates to run

why remus hates to run

F/F
M/M
G
Updated
18.04.2025
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, Marlene McKinnon, Minerva McGonagall, Dorcas Meadowes, Marlene McKinnon/Dorcas Meadowes, Sirius Black & Remus Lupin & Peter Pettigrew & James Potter,
Tags
Hurt/Comfort Emotional Hurt/Comfort Medical Inaccuracies Chronically Ill Remus Lupin Needles James Potter Has ADHD Regulus Black & Sirius Black are Twins Hypoglycemia Diabetic Remus Lupin Low Blood Sugar This is unrealistic but idk
remus has t1D and has always avoided vigorous exercise, as it made his blood sugar drop super quick!! with no way of stopping it.but remus is spiteful, and decides he has magically outgrown it.though when he and james run, they seem to have forgotten...
Call Me By Your Patronus

Call Me By Your Patronus

M/M
G
Updated
18.04.2025
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, Narcissa Black Malfoy, Evan Rosier
Tags
Not Canon Compliant Canon Compliant Seer Regulus Black Regulus Black & Sirius Black are Twins Seer Sirius Black
Sirius and Regulus Black are inseparate twin brothers... until Sirius is placed in Gryffindor. Both Seers, the Black twins don't realize just how intertwined their lives will become after drifting apart.Updates Fridays (Weekly) Starting June 1st 2024...