Spy Regulus Black FanFiction

I Can Finally See The Light Once More

I Can Finally See The Light Once More

G
Updated
13.04.2025
Fandom
Harry Potter - J. K. Rowling
Characters
Regulus Black/James Potter, Regulus Black, Original Female Character(s), Sirius Black/Remus Lupin, Remus Lupin, Sirius Black, James Potter, Minor Characters
Tags
Angst with a Happy Ending Hurt/Comfort Trans Male Character Emotional Hurt/Comfort Angst and Hurt/Comfort Fluff and Angst Anxiety Albus Dumbledore Bashing Kid Fic Regulus Black & Sirius Black Have a Good Relationship Parenthood Sorry Not Sorry
James was sitting curled up with Padfoot on the couch of Remus and Sirius's cottage in south Wales, the same way he had spent so many other nights, especially in the past few months. There was a rare form of comfort that James was able to feel when h...
Poison and Wine

Poison and Wine

F/M
M/M
G
Updated
14.04.2025
Fandom
Harry Potter - J. K. Rowling
Characters
Regulus Black, Harry Potter, Severus Snape, Draco Malfoy/Harry Potter, Draco Malfoy, Hermione Granger, Ginny Weasley, Original Muggle Character(s), Hermione Granger/Severus Snape, Regulus Black/Ginny Weasley
Tags
Fluff Angst Slow Burn Hurt/Comfort Past Torture Enemies to Lovers Age Difference Severus Snape Lives Auror Harry Potter Regulus Black Lives Rare Pairings Past Hermione Granger/Ron Weasley
After the Battle of Hogwarts, Hermione finds herself with a frightening new ability. Anytime she touches someone, she is overcome with their memories and emotions--things than many people wish to keep private. Unable to control it, Hermione is forced...
defend

defend

Other
G
Updated
14.04.2025
Fandom
Harry Potter - J. K. Rowling
Characters
Regulus Black, Remus Lupin, Sirius Black, James Potter, Peter Pettigrew, Minerva McGonagall, Albus Dumbledore, Regulus Black & Sirius Black, Minor or Background Relationship(s)
Tags
Alternate Universe - Canon Divergence POV Remus Lupin First Wizarding War with Voldemort (Harry Potter) Regulus Black & Sirius Black Have a Good Relationship Protective Older Brothers Spy Regulus Black Sirius Black is So Done
Regulus is a spy for the order, and he’s sent on a mission he came up with, that he doesn’t come back from for a month. Sirius is done waiting.
Like Lovers, Or Partners In Crime

Like Lovers, Or Partners In Crime

M/M
G
Updated
14.04.2025
Fandom
Harry Potter - J. K. Rowling
Characters
Regulus Black/James Potter, Albus Dumbledore, Regulus Black & Sirius Black
Tags
Flirting Mutual Pining Blood and Injury Angst with a Happy Ending Fluff and Humor Angst and Hurt/Comfort Fluff and Angst Gunshot Wounds Caretaking Heist Regulus Black & Sirius Black Have a Good Relationship Regulus Black is a Little Shit
“Potter, was all this some ploy to get me out of my pants? Whatever will Sirius say when he hears?"James snorted, "He'd probably say, about time you twit or something along those lines. And don’t be ridiculous, I’m nothing if not a gentleman, I’d buy...
The ghost from within

The ghost from within

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, Mary Macdonald (Harry Potter), Marlene McKinnon, Minerva McGonagall, Severus Snape, Dorcas Meadowes,
Tags
Not Canon Compliant First Wizarding War with Voldemort (Harry Potter) Horcruxes Albus Dumbledore Bashing Regulus Black Lives Regulus Black and Sirius Black Angst Sirius Black & James Potter Friendship Horcrux Hunting Bad Parent Bartemius "Barty" Crouch Sr. Morally Grey Regulus Black Bad Parent Orion Black The Noble and Most Ancient House of Black
Shadows had turned into a comfort to him. A way to pass unnoticed, he turned into a ghost and that was the best he could become being the spare in the noble and most ancient house of Black.And when Regulus was forced to take the mark at sixteen, a re...
You Can Go Your Own Way, But You're Better Off Alone

You Can Go Your Own Way, But You're Better Off Alone

Multi
Other
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, Peter Pettigrew, Lily Evans Potter, Regulus Black & Sirius Black, Sirius Black & James Potter, Walburga Black, Orion Black,
Tags
Angst Dysfunctional Family Pregnancy Angst and Hurt/Comfort First Wizarding War with Voldemort (Harry Potter) Regulus Black-centric Remus Lupin Lives Postpartum Depression Regulus Black Lives Remus Lupin & Lily Evans Potter Friendship Somebody Lives/Not Everyone Dies Regulus Black and Sirius Black Angst
December 29th 1961 - 4:34 AMWhen Walburga Black locked eyes with her second born son, Regulus Arcturus Black, she knew he was perfect."Is there something wrong with me?" Regulus asks, his life shifting to accommodate this new-found discovery.Or, Regu...
Traitor

Traitor

M/M
G
Updated
14.04.2025
Fandom
Harry Potter - J. K. Rowling
Characters
Regulus Black/James Potter, Sirius Black/Remus Lupin, Tom Riddle | Voldemort, Albus Dumbledore, Regulus Black & Sirius Black, Bellatrix Black Lestrange, Kreacher (Harry Potter)
Tags
Murder Blood and Injury Angst with a Happy Ending Hurt/Comfort Angst and Hurt/Comfort Implied/Referenced Torture Kidnapping Background Character Death First Wizarding War with Voldemort (Harry Potter) Albus Dumbledore Bashing Regulus Black & Sirius Black Have a Good Relationship Regulus Black and Sirius Black Angst
Sirius gets kidnapped by Bellatrix on a job for the Order and is taken back to Grimmauld Place. Regulus is a spy for the Order of the Phoenix and is faced with an impossible decision; risk blowing his cover to save his brother or hope his friends can...
Helpless Against The Tide

Helpless Against The Tide

M/M
G
Updated
14.04.2025
Fandom
Harry Potter - J. K. Rowling
Characters
Regulus Black/James Potter, Tom Riddle | Voldemort, Albus Dumbledore, Regulus Black & Sirius Black, Kreacher (Harry Potter)
Tags
Angst with a Happy Ending Angst and Hurt/Comfort Implied/Referenced Child Abuse Drowning Caretaking First Wizarding War with Voldemort (Harry Potter) Horcruxes Regulus Black-centric Regulus Black & Sirius Black Have a Good Relationship Forehead Kisses Regulus Black Needs a Hug Abusive Walburga Black
Regulus Black is a spy for the Order. He discovers Voldy's horcrux and goes to the cave with Kreacher in tow, nearly dying in the process, forcing Kreacher to get a little help from his boyfriend and big brother.
You Will Be Found

You Will Be Found

M/M
G
Updated
15.04.2025
Fandom
Harry Potter - J. K. Rowling
Characters
Regulus Black/James Potter, Remus Lupin, Sirius Black, Peter Pettigrew, Marlene McKinnon, Dorcas Meadowes, Albus Dumbledore, Evan Rosier, Barty Crouch Jr.
Tags
First Wizarding War with Voldemort (Harry Potter) Reunions Trans Regulus Black Alternate Universe - Everyone Lives/Nobody Dies Spy Regulus Black Spy Remus Lupin
And finally there was his star. His beautiful, perfect star who James had not seen in 2 years. One day they were laughing and holding each other close and the next he was simply gone. All James had left was a note saying “When it’s safe, I will find...
bring your own best friend

bring your own best friend

F/M
M/M
G
Updated
15.04.2025
Fandom
Harry Potter - J. K. Rowling
Characters
Sirius Black/Remus Lupin, James Potter/Lily Evans Potter, Remus Lupin, Sirius Black, James Potter, Lily Evans Potter, Severus Snape, Sirius Black/Severus Snape, Remus Lupin/Severus Snape, Sirius Black/Remus Lupin/Severus Snape
Tags
Time Skips Alternate Universe - Canon Divergence Hurt/Comfort Emotional Hurt/Comfort Established Relationship Not Beta Read Fix-It First Wizarding War with Voldemort (Harry Potter) Post-Time Skip Fights Reconciliation Order of the Phoenix (Harry Potter)
Information from the Order is somehow leaking to Voldemort. Meanwhile, Severus has to deal with the growing tension between his two boyfriends.
On Begged and Borrowed Time

On Begged and Borrowed Time

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, Peter Pettigrew, Lily Evans Potter, Marlene McKinnon, Severus Snape, Dorcas Meadowes, Lucius Malfoy,
Tags
Not Canon Compliant Angst with a Happy Ending Eventual Sex Marauders Era (Harry Potter) Regulus Black-centric Sirius Black Lives Regulus Black Lives Seer Pandora Lovegood Chaotic Barty Crouch Jr. Regulus Black Needs a Hug Horcrux Hunting Prophecy
"Regulus, I'm so sorry," Pandora stammers. "I should have told you, but I didn't know what to do. I was scared—I am scared.""Pandora," James interrupts. "How does it end?"Pandora very clearly hesitates. She tightens her grip on her book bag before ta...
everything that ever was or ever will be

everything that ever was or ever will be

M/M
G
Updated
15.04.2025
Fandom
Harry Potter - J. K. Rowling
Characters
Regulus Black/James Potter, Regulus Black, James Potter
Tags
Albus Dumbledore Bashing Regulus Black Lives If You Squint - Freeform Time Travel Fix-It Doctor Who References Spy Regulus Black mcd (but not really)
Regulus Black has been reported dead and James Potter refuses to accept this. He is a Marauder after all.
Spies Uncovered

Spies Uncovered

G
Updated
18.04.2025
Fandom
Harry Potter - J. K. Rowling
Characters
Regulus Black/James Potter, Sirius Black/Remus Lupin, Peter Pettigrew
Tags
Regulus Black Lives POV Peter Pettigrew Confrontations Spy Regulus Black
Peter has been enjoying being a spy, but what happens when he reveals himself to the wrong person?
Have yourself a merry little Christmas

Have yourself a merry little Christmas

M/M
G
Updated
18.04.2025
Fandom
Harry Potter - J. K. Rowling
Characters
Regulus Black/James Potter, Regulus Black, James Potter, Lily Evans Potter, Mary Macdonald (Harry Potter)
Tags
Implied/Referenced Suicide Implied/Referenced Child Abuse Trauma Panic Attacks Trans Regulus Black Regulus Black Lives Pansexual James Potter Voldemort Dies (Harry Potter) Jegulus Regulus Black Needs a Hug Starchaser Remus Lupin Needs a Hug
Title based off of the cover "have yourself a merry little Christmas by EGG"War has ended, Sirius Black is dead and James Potter finds a stray cat on the street, reminded of Regulus Black, his boyfriend who disappeared. HAPPY ENDING!!
So Much (for) Stardust

So Much (for) Stardust

F/M
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, Severus Snape, Dorcas Meadowes, Tom Riddle | Voldemort,
Tags
Explicit Language Canon-Typical Violence Fate undecided - Freeform Oblivious Sirius Black Spy Regulus Black Seer Regulus Black Spy James Potter Maybe Death Eater James happy ending probably Destiny is a Bitch
Regulus Black could, sometimes, see the future. Most of the time, it came to him in dreams. Dreams were unhelpful, he wouldn’t know it was something that would happen - until it did happen. And then, he would stand there, looking strange and feeling...
Catching a Rat

Catching a Rat

M/M
G
Updated
18.04.2025
Fandom
Harry Potter - J. K. Rowling
Characters
Regulus Black/James Potter, Regulus Black, Remus Lupin, Sirius Black, James Potter, Peter Pettigrew
Tags
Confrontations Spy Regulus Black tiktok prompt Smug Regulus Black
Regulus Black learns who the new recruit is for the Death Eaters. He's not the only spy.
Obsession, Skirts, and Disownment

Obsession, Skirts, and Disownment

M/M
G
Updated
19.04.2025
Fandom
Harry Potter - J. K. Rowling
Characters
Regulus Black, Sirius Black/Remus Lupin, Remus Lupin, Sirius Black, James Potter, Peter Pettigrew, Walburga Black, Orion Black
Tags
Pre-Relationship Friendship/Love Child Abuse Marauders Era (Harry Potter) Summer Bad Parent Orion Black Rebellion Boys in Skirts Warning: Walburga Black Young Regulus Black Spy Regulus Black Disowned Sirius Black
The story of Sirius getting disowned and running away.Somewhat a prequel to my other fic 'Look at Me'. Sirius being disowned is mentioned a couple times in that, so I wanted to fill out the story.Some Pre-Wolfstar also in line with the story.