Alternate Universe - Spider-Man Fusion FanFiction

Savior Complex

Savior Complex

M/M
G
Updated
13.04.2025
Fandom
Harry Potter - J. K. Rowling
Characters
Regulus Black/James Potter, Remus Lupin, Regulus Black & Sirius Black, Barty Crouch Jr.
Tags
Heavy Angst Blood and Injury Angst with a Happy Ending Fluff and Humor Emotional Hurt/Comfort Angst and Hurt/Comfort Minor Character Death Car Accidents Caretaking Regulus Black & Sirius Black Have a Good Relationship Chaotic Barty Crouch Jr. James Potter Loves Regulus Black
Even Spider-Man can't save everyone.When James witnesses a catastrophic car accident, he tries to help the victims as best he can, but without his suit, he can't use any of his powers without giving up his identity. Afterward, he grapples with his fa...
"Just us against world, right?"

"Just us against world, right?"

F/F
G
Updated
11.04.2025
Fandom
Spider-Man - All Media Types
Characters
Original Characters, Original Female Character(s), Miles Morales, Original Female Character(s)/Original Female Character(s), Minor or Background Relationship(s), Original Spider-Man Characters, Original Symbiote Characters (Marvel), Jessica Drew, Miguel O'Hara, Gwen Stacy | Spider-Gwen
Tags
Fluff Angst Friends to Lovers Mutual Pining Swearing Idiots in Love Love Triangles Homophobic Language Strangers to Lovers Kinda Compulsory Heterosexuality Alternate Universe - Spider-Man Fusion
"Promise to stay by my side?""Seriously? You already know the answer to that, Mel.""Jade...""Fine. I, Jayden Gavinski, promise to never leave your side 'til the day we die and we *are* dying together, nerd."Two best friends, bonded by ✨trauma✨, bot...
scent of burnt car tires (lavender helps)

scent of burnt car tires (lavender helps)

F/F
G
Updated
11.04.2025
Fandom
Arcane: League of Legends (Cartoon 2021)
Characters
Caitlyn/Vi (League of Legends), Caitlyn (League of Legends), Vi (League of Legends), Jinx (League of Legends), Ekko (League of Legends), Jayce (League of Legends), Mel Medarda
Tags
Fluff Awkward Flirting Angst Friends to Lovers Mutual Pining Idiots in Love Falling In Love First Kiss First Dates Late Night Conversations High School Short & Sweet
Caitlyn has been waiting for this loser of a girl to ask her out for weeks. Prom is just around the corner and she’s not sure how much longer she can wait.There’s just one big problem. They haven’t talked in school, Vi is always disappearing off to p...
Villain & Violent

Villain & Violent

M/M
G
Updated
14.04.2025
Fandom
Harry Potter - J. K. Rowling Spider-Man - All Media Types
Characters
Regulus Black/James Potter, Sirius Black & James Potter, Peter Pettigrew & James Potter
Tags
Blood and Injury Angst with a Happy Ending Fluff and Humor Angst and Hurt/Comfort Kidnapping Regulus Black & Sirius Black Have a Good Relationship James Potter Loves Regulus Black Alternate Universe - Spider-Man Fusion Sirius Black & James Potter Friendship Friends to Enemies Regulus Black Loves James Potter Established Regulus Black/James Potter
Regulus Black goes missing, and James gets a mysterious text indicating his secret identity is no longer a secret.Somebody knows James Potter is Spider-Man, and whoever it is, is targeting the Black brothers to get to him.
Leave The Window Open

Leave The Window Open

M/M
G
Updated
14.04.2025
Fandom
Harry Potter - J. K. Rowling Spider-Man - All Media Types
Characters
Regulus Black/James Potter, Regulus Black & Sirius Black, Sirius Black & James Potter
Tags
Blood and Injury Fluff and Humor Banter Mild Hurt/Comfort Alternate Universe - Superheroes/Superpowers Caretaking Regulus Black & Sirius Black Have a Good Relationship Fluff and Hurt/Comfort James Potter Loves Regulus Black Alternate Universe - Spider-Man Fusion Regulus Black Loves James Potter Regulus Black is So Done
James Potter is Spider-Man, and frequently gets himself into sticky situations, meaning he needs his resident healer to fix him up. Regulus Black has always left his bedroom window unlatched for James since the first day he fell through.
Silk City Vice

Silk City Vice

F/F
F/M
M/M
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, Mary Macdonald (Harry Potter), Marlene McKinnon, Dorcas Meadowes, Alastor "Mad-Eye" Moody,
Tags
Alternate Universe - Modern Setting Angst Slow Burn Friends to Lovers Mutual Pining Domestic Violence Character Death Hurt/Comfort Alternate Universe - College/University Identity Reveal Secret Identity Pining
Remus hides the fact that he’s Spider-Man from just about everyone he knows. It’s really not that hard of a secret to keep.It does become hard though when he unintentionally finds himself befriending Sirius Black as both Spider-Man and himself.orRemu...
Webbing Between the Stars

Webbing Between the Stars

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, Marlene McKinnon, Minerva McGonagall, Severus Snape, Dorcas Meadowes, Marlene McKinnon/Dorcas Meadowes,
Tags
Fluff Alternate Universe - Modern Setting Flirting Angst Blood Sad Ending Alternate Universe - Spider-Man Fusion depictions of mental illness Serious Injuries Warning: Walburga Black Complex Family Dynamics James Potter is Spider-Man
James isn’t a man of very many regrets. He’s done a lot of stupid things, but does he regret any of them? Absolutely not. Does he regret when he got his hand stuck in a vacuum? No, because he got to miss a day of school for it. Does he regret letting...
Spider-man: Wait, Draco Malfoy?

Spider-man: Wait, Draco Malfoy?

F/F
F/M
M/M
Multi
G
Updated
14.04.2025
Fandom
Harry Potter - J. K. Rowling Spider-Man - All Media Types
Characters
Harry Potter, James Potter/Lily Evans Potter, James Potter, Lily Evans Potter, Draco Malfoy/Harry Potter, Draco Malfoy, Ron Weasley, Hermione Granger, Lucius Malfoy, Ginny Weasley, Tom Riddle, Blaise Zabini,
Tags
Fluff Modern Era Alternate Universe - Modern Setting Slow Burn Other Additional Tags to Be Added Fluff and Angst Tags May Change Enemies to Lovers Happy Ending Secrets Boarding School Alternate Universe - No Voldemort
Draco Malfoy has never been one for romance, socialising, and especially Potter. But all that changes on one fateful day, a school trip that will affect the rest of his life.How will he cope with these newfound abilities, the death of his father, and...
I Wanna Run Against the World (That’s Turning)

I Wanna Run Against the World (That’s Turning)

G
Updated
15.04.2025
Fandom
Harry Potter - J. K. Rowling
Characters
Regulus Black/James Potter, Regulus Black, Harry Potter, Sirius Black/Remus Lupin, Remus Lupin, Sirius Black, James Potter, Peter Pettigrew, Lily Evans Potter, Marlene McKinnon, Severus Snape, Tom Riddle | Voldemort,
Tags
Alternate Universe - Canon Divergence Marauders Era (Harry Potter) POV Remus Lupin Gay Sirius Black Regulus Black-centric Alternate Universe - Human Alternate Universe - Everyone Lives/Nobody Dies POV James Potter Alternate Universe - Spider-Man Fusion Bad Parent Walburga Black James Potter is Not Okay Sirius Black & James Potter Friendship
Regulus leads a complicated life, balancing a business and a superhero alter-ego under his parent’s noses. Add in a crime syndicate, a police investigation, and a mouthy nurse? Something’s got to give.orHoly shit,” James lowers his voice, “You’re the...
Oneshots/ideas

Oneshots/ideas

Other
G
Updated
15.04.2025
Fandom
Harry Potter - J. K. Rowling The Avengers (Marvel Movies) Spider-Man - All Media Types
Characters
Original Female Character(s), Original Male Character(s), Harry Potter, Tony Stark, Natasha Romanov (Marvel), Midoriya Izuku, Bakugou Katsuki, Colby Brock, Sam Golbach, Percy Jackson, Annabeth Chase (Percy Jackson), Apollo (Percy Jackson),
Tags
Character Death oneshots AU Underage Drug Use Underage Drinking No Sex Alternate Universe - Spider-Man Fusion Drugs Suicidal Midoriya Izuku Weed mafia Alternate Universe - Percy Jackson Fusion
You are very welcome to use these.If you do make something based on what i write here, please tag me 🙏🙏 I would want to read them
web of hearts

web of hearts

F/F
G
Updated
12.04.2025
Fandom
Warrior Nun (TV)
Characters
Sister Beatrice/Ava Silva, Ava Silva, Sister Beatrice (Warrior Nun), Sister Beatrice & Ava Silva
Tags
Smut Alternate Universe - Canon Divergence Fluff and Smut Alternate Universe Lesbian Character Angst and Fluff and Smut Canon Lesbian Relationship Alternate Universe - Spider-Man Fusion Canon Bisexual Character Soft Sister Beatrice/Ava Silva Badass Sister Beatrice (Warrior Nun) Ava Silva Being Ava Silva
Ava is friendly neighborhood Spider-Girl. But some guys are NOT friendly.Beatrice saves Ava from the clutches of death. Now they share an apartment, moreover, a secret.