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Summary
I have a gazillion Steve X Bucky ideas and only so many hours in the day, so please, take some Alternate Universe prompts. Your city now(Crossposted from Tumblr)NEW: Now with 12 new AUs, prompts in the first chapter and details in the 3rd!
Note
First I'll list the brief concepts. If that's all you need, take it from there! Otherwise, I've included more thoughts and details on each in the next chapter. All these prompts are free to use by anyone. You don't have to ask for permission. And you can change them however you want as well. I hope these ideas will inspire you, not limit your creativity.Please consider reblogging the tumblr post, as it hasn't got much traction.And if you do make something using one of these, please let me know in the comments! I wanna see~
Prompt Summaries/Concepts
April 30, 2025 at 07:37 AM
Steve AUs loosely related to canon
- Steve's shield has a soul
- The serum made Steve's skin become an unnatural colour (like Schmidt turned red)
- Steve is an alien whose biology doesn't jive with Earth's environment and that's why he had so many health problems, but Erskine can help him
- Steve becomes small!Steve or large!Steve based on his emotions and willpower
- Steve has Grim-Reaper-like powers that come from his near death experiences
- Steve's powers come from his art (and he uses them to help freed!Bucky heal)
- Steve's powers come from his art (and the Winter Soldier has to rescue him from Hydra because of it)
- NEW: Steve is secretly an angel
- NEW: "Captain America" is a spirit that possesses Steve
- NEW: Steve goes to Coney Island and finds that the Ferris Wheel takes him temporarily back to the past
Bucky AUs loosely related to canon
- The Winter Soldier is a computer construct (like Zola) who has possessed Steve's phone
- The Winter Soldier is a real ghost, with special supernatural abilities
- The Winter Soldier has frost-themed powers
- Bucky is a robot built by Howard Stark to be Steve's sidekick, who gains sentience and falls in love with Steve despite not being programmed to do either of those things
- Bucky is a monster who was doing a great job of pretending to be human until Hydra got their hands on him
- Bucky is an arctic god who watches over frozen Steve
- Bucky is Steve's guardian angel but messes up and has to be rescued by the person he was supposed to be guarding
- Wraith Warrior AU: the Tesseract grants Bucky magic blue glowy powers
- NEW: Bucky joined the air force instead of the army and ended up piloting a time-travelling plane
- NEW: The Winter Soldier figures out how to hop to parallel universes, and tries to help himself out in each one
- NEW: Bucky sees the Winter Soldier (himself from a parallel world) and is inspired to become an assassin of his own volition
- NEW: When Bucky falls off the train, he falls through a wormhole, is adopted by an alien culture, and becomes a badass cyberpunk warrior
Different setting Bucky AUs
- Bucky is a folkloristic creature suffering in a circus sideshow; Steve comes to free him
- Modern AU where Bucky suffers from feelings of doom that come from the lives he endured in other universes
Fix it AUs for Bucky's fate
(I.E. AUs that make Bucky being the Winter Soldier a little less terrible for him, or not happen at all)
- Bucky uses a "mind palace" to escape losing himself to the Winter Soldier
- Bucky stores his memories prior to being captured so the Winter Soldier can someday find them
- Steve's force ghost protects Bucky in captivity
- NEW: Bucky thinks Steve's force ghost is a Hydra operative who is on his side
- Between 1944 and 2012, Bucky & Steve share dreams
- Hydra accidentally makes Bucky too powerful
- Bucky has advance visions of his fate and is prepared to accept it, but Steve says "fuck that"
- Bucky & Steve survive WWII and have to chose whether or not to go to the future, and once again Steve says "fuck that" to getting there by creating the Winter Soldier
Steve & Bucky 2010s reunion AUs
- Steve & Bucky fall in love despite neither of them knowing Bucky is Bucky
- The Winter Soldier anonymously messages Steve whenever he gets the chance
- Steve finds Bucky's frozen body and has to defrost him (oooh, huddling for warmth, oooh)
- Bucky decides to "surveil" Steve from afar, but leaves Bucky-themed post-its around his house
- Steve is the only person who remembers Bucky existed; everyone else has mass amnesia about him for some reason
Other pair AUs
- Bucky & Steve have a magic bond; if one is still alive, the other will be too
- Bucky & Steve have a telepathic bond that reactivates when Steve comes out of the ice
- Bucky & Steve are a pair of superheroes who can take each other's pain and heal each other's wounds
- Roleswap: Steve is found by Hydra after the crash; Bucky falls into a glacier in the Alps and is frozen for 70 years
- Steve is a god of death, Bucky is a god of sex (or they both are different kinds of demons), and they decide to participate in World War II together
- Bucky & Steve were prisoners in neighbouring cells
- Bucky & Steve are bound by the red string of fate, but mistake it for an omen of death
- NEW: Bucky & Steve are a pair of ancient warriors who have been travelling through time together for centuries
AUs based on other stories
- Steve is King Arthur, Bucky is Merlin (although the other way around could work with small!Steve)
- The Last Knight AU (Steve is Michael, Bucky is Fisk)
- Howl's Moving Castle AU (small!Steve is Sophie, Bucky is Howl)
- NEW: Good Omens AU (Steve is an angel, Bucky is a devil)
- NEW: Boku no Hero Academia AU (Steve has similar powers to All Might and Bucky finds out the secret that he isn't powerful all the time)
AUs including Peggy
- Peggy is a superhero like the Black Widow
- Peggy and Bucky rescue Steve from the arctic
- According to 2010s!Shield, Peggy is a supervillain
Other AUs
- The Howlies crash the Battle of New York
- The Howlies are unmoored from time and become legends
- NEW: The Howlies are a superhero squad, like a prototype of the Avengers
- Steve somehow ends up with a prosthetic that matches Bucky's