MCU Fanfiction
The Marvel Cinematic Universe, featuring the Avengers, Spider-Man, and countless heroes across interconnected films and TV series.
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What is MCU fanfiction?
Marvel fandom on AO3 is really several fandoms in a trenchcoat: the Stucky 40s-period wing, the Tony Stark-centric fix-it industrial complex, the Loki redemption corpus, and a Spider-Man ecosystem with its own gravity. The MCU's two-decade sprawl means writers can set fic in a dozen distinct canon eras, and the fandom's signature move is repairing film decisions with 100k words of care — Civil War and Endgame each spawned entire literatures of dissent.
MCU fanfiction is fan-created stories set in the Marvel Cinematic Universe universe. With over 380,000 works on Archive of Our Own, MCU is one of the most popular fandoms in the fanfiction community.
These stories explore beloved characters like Steve Rogers, Bucky Barnes, Tony Stark, Peter Parker, and many more. Writers create everything from short one-shots to epic novel-length adventures, exploring relationships, alternate universes, and "what if" scenarios.
Most Popular MCU Fanfics
These are the highest-rated MCU stories on AO3, ranked by kudos from readers.
I Am Groot
by sherlocksmyth
EXTREMELY NSFW fic told from the perspective of Groot. EDIT 04/05/2021:Wow. I just found out this is the top fic on AO3. I’m losing my mind. Thank you guys for the kudos & views! If you want you can follow me on Tumblr: @grootficguy
Dark Matter
by mysterycyclone
The last thing Peter sees is Tony's horrified, heartbroken expression leaning over him. The guilt in his eyes is almost worse than the burning pain that's taking Peter apart piece by piece. The world starts to go dark.There's a flash of gold and green. For one moment, he finds himself standing among
The Third Option
by orphan_account
Homecoming AU.Ben and May divorced before Peter’s parents died, so when Ben is murdered Peter goes into foster care. It takes just a tiny taste of superpowers for Peter to decide he doesn’t want to put up with his horrible foster father anymore—the streets are infinitely more appealing. All he wants
Fitting In (Tiny Spaces)
by aloneintherain
Peter's trapped beneath a collapsed building during a mission, hurt and unable to move. Luckily, his comm still works. Unluckily, the Avengers don’t realise how bad of a state Peter is in, and Peter isn’t inclined to tell them. “Spidey, they’ve got reinforcements. We’ve hit a bit of a snag here, and
Astronomy In Reverse
by pansley
A year after the Winter Soldier failed his mission in DC, Bucky Barnes is doing his best to stay under the radar from both Hydra and Steve Rogers. His hope for a peaceful day-to-day life in limbo goes awry, however, when he meets Queens’ newest hero; a pure-hearted kid with a death wish and a ridicu
A Different Kind of Mask
by aloneintherain
“So, you remember the plan, right?” Matt whispered. The sirens in the distance picked up, the sounds of the police officers on foot growing louder.“You’re blind and I’m just a scared teenager,” Peter said back, nodding. “Got it.”
Mistake on the Part of Nature
by idiopathicsmile
Steve takes in Bucky's betrayed look and Sam's confusion, follows Sam's gaze to the pile of mangled fruit in the trash can. Sudden comprehension fills his face."Oh," he says. "Bucky found out about bananas." In which an American icon is mourned. But probably not the one you're thinking of.
It's Above My Clearance Level
by tsk
In which Peter's class goes on a field trip to Stark Tower, and no one knows why this kid has such high clearance.
Miscommunications
by Isnt_it_pretty_to_think_so
Five times the Avengers learn about Peter Parker, and the one time the rest of the world does, too.
Death Before Inaction
by hppjmxrgosg
“Fuck off, Nicky.”~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~“Hasn’t anyone ever told you spider-napping is illegal?”~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~“You can’t hold me here, I know my spider-rights.”~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~“God, you guys are so old. What are you? Like 27?”~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~“Scale
Worst Summer Vacation
by mysterycyclone
The last thing he remembers is leaving school. It was a half day, as he’d finished his exams early, texted May about staying over at Ned’s place, sent another text to MJ and then a twitch of his spider senses--Then a pinch at his neck, like a bee sting, but deeper. Darkness. Then here.Huh. Kidnapped
Bleed the Water Red
by aloneintherain
Peter and Deadpool are held captive by a super-villain that has an inclination for torture. After she boasts her untarnished record at never having hurt a child or teenager, Peter is forced to break the truth to both her and Deadpool. “Did you know I have a perfect record?” The villain collects a ru
Aliens, Hammers, and Making a Memorable First Impression
by Marvel_Fangirl
"Wow, dude, this thing is awesome. Does it generate its own electricity?" Peter flipped the hammer once in the air and caught it, watching in amazement as sparks danced over it. "Like, I know you're the god of thunder, but I didn't know your hammer had magic powers too! That is so cool. I want one.
The Twice-Told Tale
by arysteia
For someone he'd hero-worshipped for so long, Steve Rogers in the flesh is a pretty big disappointment. For one thing, he keeps looking at Tony as though he reminds him of someone else, and even if he never says anything, Tony's pretty sure it's his father. A lifetime of not measuring up to Howard
Slide To Answer
by relenafanel
"What do I do?” Steve appealed into the phone. “I’m freaking out.”There was silence on the other end of the line. It lasted so long that Steve pulled the receiver away from his ear and frowned at it. Pay phones were old. Maybe this one wasn’t working despite the obvious dial tone when he picked u
Repeat After Me
by battybatzgirl
Tony’s face hardens as he says, “What kid.”“I don’t know, some twelve year old—”Below him, the kid coughs out, “Fifteen.”“—Fifteen year old—”Tony scrubs a hand across his face. “Don’t tell me he’s wearing a dorky shirt with a chemistry pun on it.”Rhodey frowns. That was oddly specific. Glancing down
Constant Internal [Spider] Screaming: Semi-Connected Scenes from a Graduating Senior’s Life
by isaDanCurtisproduction
When Peter's Teacher announces that his Graduating Class's Senior Trip is going to be to Stark Industries, the place where Peter has an internship, and where he spends so much of his free time, he is... less than enthused. No one believes his Internship is real and frankly, he just doesn't want to d
Hot Chocolate
by Isnt_it_pretty_to_think_so
“So,” Natasha says. “You’re Spiderman.” The kid is practically hyperventilating, staring at her with those damn eyes. “You . . . you . . .” “Relax,” she says, heading over to her secret stash of cocoa. “If I wanted to kill you, you’d be dead. Do you want some hot chocolate?” OR: The first time Natas
research and disaster
by blueh
There should have been nothing remarkable about two people in a busy cafeteria, but Becket takes in the familiar sight of curly hair, brown eyes, and a t-shirt with a science pun on it talking animatedly alongside Actual Anthony Edward Stark and promptly drops his lunch.He gapes for a solid second,
I Think I Missed a Step ('Cause I'm Fallin' For You)
by mokuyoubi
There’s a weird familiarity about the kid's tone and posture, and it’s true that Wade is pretty far from home today but he’s also certain he’d remember that baby-face if he’d seen it before. On the other hand, he has spent the better part of the past few years feeling like he’s missed a step, so thi
MCU Fanfics by Length
Pick a reading commitment — from one-sitting one-shots to 100k+ epics:
Best MCU Fanfic Rec Lists
Popular MCU Ships
Stucky
James 'Bucky' Barnes/Steve Rogers
Best friends since childhood, separated by war and time, reunited as heroes - Steve Rogers and Bucky Barnes.
75,000 works →
Stony
Steve Rogers/Tony Stark
Captain America and Iron Man, two leaders of the Avengers whose opposing ideologies and mutual respect create intense chemistry.
85,000 works →
IronStrange
Stephen Strange/Tony Stark
The brilliant surgeon-turned-sorcerer and genius inventor, two arrogant intellectuals who understand each other's burdens.
25,000 works →
Thorki
Loki/Thor
The Asgardian princes, adopted brothers whose complex relationship spans love, rivalry, betrayal, and redemption across the cosmos.
55,000 works →
Spideypool
Peter Parker/Wade Wilson
The young web-slinger Spider-Man and the irreverent mercenary Deadpool, whose contrasting personalities create chaotic chemistry.
35,000 works →
SamBucky
Sam Wilson/Bucky Barnes
Sam Wilson and Bucky Barnes spent years trading insults over Steve Rogers' shoulder before The Falcon and the Winter Soldier forced them into a reluctant partnership. Their canon bickering reads like flirting to much of the fandom, and the show's road-trip energy turned a background rivalry into one of the MCU's biggest ships.
21,000 works →
WinterIron
Bucky Barnes/Tony Stark
Tony Stark and Bucky Barnes are bound by the worst possible history: the Winter Soldier killed Tony's parents while brainwashed. Civil War left them enemies, which is exactly why fic writers can't stop repairing the wreckage — usually starting with Tony building Bucky a new arm.
14,000 works →
Cherik
Erik Lehnsherr/Charles Xavier
Magneto and Professor X are ideological opposites who genuinely love each other across every X-Men timeline. X-Men: First Class made the subtext nearly text — chess games, shared dreams for mutantkind, and a beach divorce that broke a generation of fans.
26,000 works →
Pepperony
Pepper Potts/Tony Stark
Pepper Potts kept Stark Industries — and Tony Stark — running long before she became his wife. Their canon romance anchors the entire Iron Man arc, from boss-and-assistant tension to the quiet domesticity of the lake house in Endgame.
18,000 works →
ScarletVision
Wanda Maximoff/Vision
A witch and a synthezoid fell in love between apocalypses, and WandaVision turned their grief into nine episodes of sitcom-wrapped heartbreak. Wanda losing Vision twice in Infinity War remains one of the MCU's cruelest beats, and fandom has been undoing it ever since.
6,000 works →
Romanogers
Natasha Romanoff/Steve Rogers
The Winter Soldier paired Steve Rogers and Natasha Romanoff as fugitive partners, and their easy trust — plus that undercover kiss on an escalator — launched a ship that never slowed down. He's the last honest man; she's a spy who stopped lying around him.
11,000 works →
FrostIron
Loki/Tony Stark
Their entire canon relationship is one scene: Loki throwing Tony Stark out a window in Avengers. The drink Tony offered first became fandom legend, spawning thousands of fics where the god of mischief takes him up on it instead.
13,000 works →
Stuckony
Steve Rogers/Bucky Barnes/Tony Stark
The fandom's flagship OT3 solves the Civil War problem by refusing to choose a side. Steve, Bucky, and Tony each carry guilt the other two understand, and triad fic lets the century-spanning love story and the futurist finally share a timeline.
9,000 works →
FitzSimmons
Leo Fitz/Jemma Simmons
Agents of S.H.I.E.L.D.'s lab partners were so inseparable their names fused into one word in the pilot. Canon spent seven seasons torturing them — the bottom of the ocean, alien planets, time loops — and still let them get married, a rarity fandom celebrates and expands.
8,000 works →
WandaNat
Wanda Maximoff/Natasha Romanoff
One of the MCU's biggest femslash pairings grew from a handful of training scenes and the shared weight of being the Avengers' most haunted women. Natasha mentoring the team's youngest recruit gave fandom the foundation; the rest is extrapolation and longing.
6,000 works →
Clintasha
Clint Barton/Natasha Romanov
The archer made a different call in Budapest, and fandom has been writing that story ever since. Marvel's master assassins share a pre-Avengers history the films only tease, fueling a decade of spy-partner fic that runs parallel to or replaces Clint's farm family.
12,000 works →
Lokius
Loki/Mobius M. Mobius
The TVA analyst who collects jet ski magazines is the first person to truly see through the God of Mischief, and the Loki series built two seasons on their bond. After a finale that separated them across time, fandom took over the reunion.
7,000 works →
Symbrock
Eddie Brock/Venom Symbiote
A washed-up reporter and the alien living in his body bicker like spouses across the Venom films, which canonically reference their bond as a relationship. Fandom embraced Marvel's weirdest romance with gusto the comics had already endorsed.
6,000 works →
SamSteve
Sam Wilson/Steve Rogers
'On your left' launched a friendship that ended with Steve handing Sam the shield. Fic celebrates the easy warmth between the veteran counselor and the man out of time, from morning runs to the weight of Captain America passed between them.
5,000 works →
Thundershield
Thor/Steve Rogers
The god of thunder and the super-soldier are the Avengers' twin pillars of old-fashioned nobility, and fandom pairs their matched sincerity and shared centuries of loss. Endgame-era fic often has them rebuilding each other after everything breaks.
3,000 works →
BuckyNat
James 'Bucky' Barnes/Natasha Romanov
In the comics, the Winter Soldier trained the Black Widow in the Red Room and they loved each other across erased memories. MCU fans import that history wholesale, writing two ghosts of the Cold War who keep finding each other after every mindwipe.
4,000 works →
IronHusbands
James 'Rhodey' Rhodes/Tony Stark
Rhodey has hauled Tony out of deserts, depositions, and depressions since MIT, the longest steady relationship of Stark's life. The IronHusbands tag honors the one person who never needed anything from Tony, written as decades of friendship finally naming itself.
2,500 works →
Spideychelle
Michelle Jones/Peter Parker
MJ figured out Spider-Man's identity by paying attention, then chose him anyway, until No Way Home's spell erased him from her memory. Fic splits between fluffy Euro-trip-era romance and devastating post-spell stories where Peter watches her from afar.
4,500 works →
Fratt
Matt Murdock/Frank Castle
Daredevil chained the Punisher to a chimney and debated the ethics of killing, and a ship was born. The Catholic lawyer who won't kill and the marine who won't stop circle each other across Hell's Kitchen in fic that treats ideology as foreplay.
3,000 works →
Kastle
Frank Castle/Karen Page
The journalist who humanized the Punisher in a hospital room became the one person Frank protects without being asked. Across Daredevil and his own series, their charged diner scenes and elevator goodbye built Netflix-Marvel's great unconsummated romance.
3,500 works →
Common MCU Tropes
Popular Characters
Frequently Asked Questions
How many MCU fanfics are on AO3?
There are over 380,000 MCU fanfiction works on Archive of Our Own, making it one of the platform's largest fandoms.
What are the best MCU ships?
Popular MCU pairings include Stucky, Stony, IronStrange. Each ship has thousands of dedicated stories exploring their relationship.
How can I read MCU fanfiction on my phone?
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