1 - 20 of 49,646 Works in Headcanon
Navigation
Listing Works
-
Mario & Steven: Dimensions Collide by thecyrious1
Fandoms: Super Mario & Related Fandoms, Steven Universe (Cartoon)
02 Dec 2025
Tags
Summary
After the destruction and recreation of the universe, Mario is hailed as a legendary hero, and his birthday is turned into a holiday known as Super Mario Day. One year, the evil Bowser attacks once again, and this time he has a horrifying new power: the ability to travel to other universes entirely separate from his and Mario’s own. Mario pursues Bowser into one of his portals and ends up in a mysterious new universe, where he meets a half-human, half-alien boy named Steven, who also happens to be a universe savior celebrating his birthday. The two of them decide to celebrate their birthdays together, but things go horribly awry when they make a terrifying discovery: Bowser and an old friend of Steven’s have joined forces to fulfill an ancient grudge and conquer all the dimensions of the multiverse. Will Mario and Steven have what it takes to defeat this alliance, or will all existences be plunged into eternal darkness by two vengeful souls?
-
But where sin increased, grace overflowed. by corsley
Fandoms: Hitman (Video Games), Hitman: Absolution, Hitman Series - William C. Dietz & Raymond Benson, Hitman: Damnation - Raymond Benson
02 Dec 2025
Tags
Summary
Agent 47 knows what he is—an assassin, a weapon meant to be wielded, nothing more and nothing less—he had standards though and only those worthy to use him actually could. So why then after discovering the existence of a young girl designed to be just like him had he thrown everything he had earned in his renowned career away. With no safehouses, or allies, he will learn more about himself than he ever dared to.
A selfish and bitter 47 estranged from Diana is forced to work with Birdie to uncover the conspiracy of project Vika. Victoria is never kidnapped, and is shepherded by 47 instead. But the elephant in the room—Diana's death, her murder—will be the foundation of their relationship.
Diverges from canon starting from 'Rosewood'.
Series
-
.:Corbivor Smols:. by YourBlueberryMajesty
Fandoms: Pokemon Legends: Z-A (Video Game), Pocket Monsters | Pokemon - All Media Types
02 Dec 2025
Tags
Summary
Short Corbeau x Ivor one shots
-
Tags
Summary
Ren and Morgana's chance to finally break free of Yaldabaoth's control leads to nothing but their deaths. But death hasn't earned them yet. Given the opportunity to live again and save an entirely different world, the brothers venture to Iwatodia 2009 to make things as right as they can be. With the countdown to 2017 beginning, they must prepare as much as possible for the rematch.
Series
- Part 1 of Impossible Odds
-
Mi otra mitad by rednxplosive
Fandoms: 僕のヒーローアカデミア | Boku no Hero Academia | My Hero Academia (Anime & Manga)
02 Dec 2025
Tags
Summary
"Justo hoy que es el dia del examen de admision se me ocurre jugar a la heroina?" No, espera. Eso es justamente lo que quiero ser. Una heroína."
¿Como serán las cosas despues de ser salvada por cierto chico de heterocromaticos ojos?
Las mejores personas son aquellas que conoces en las peores circunstancias.
-
Inbetween - Ninjago headcanons & one shots by Reiny13
Fandoms: LEGO Ninjago (Cartoon 2011-2022)
02 Dec 2025
Tags
Summary
Ninjago headcanons and mostly Lloyd x Harumi one shots
This book works as "filler episodes" for my ongoing book series!
Series
- Part 4 of Mamoritai
-
ibbay by ligayang_luntian for RielleKeira, rai1521 on disc
Fandoms: State SMP | ish's Civilization Series, Dream SMP
02 Dec 2025
Tags
Summary
There's a person standing in the middle of the plains, underneath a lone cherry tree, like a dot in an otherwise bright painting. A tall figure with a long black dress and a large black hat that obscures most of their features, decorated with pretty flowers. He can't see their face and they don't turn to look at him but for some reason, Micro knows exactly who this person is. Or rather, this not-person.
“Death.”
or: micro and grief
Series
- Part 8 of state smp fics to cope w/ the state of the world
- Part 12 of mcyt hyperfixation renewal
- Language:
- English
- Words:
- 3,207
- Chapters:
- 1/1
- Kudos:
- 4
- Hits:
- 14
-
What I Would Gift RDR2 Characters for Christmas by pressgforgoodgirl
Fandoms: Red Dead Redemption (Video Games)
02 Dec 2025
Tags
Summary
mini series of blurbs/drabbles coming your way!!! <3
definitely open to your thoughts, ideas, and posting your own spin on this! the following list of characters are the ones i'm planning to do, but i am open to doing others!!! these are just my faves!
arthur
charles
sadie
john
abigail
karen
mary-beth- Language:
- English
- Words:
- 502
- Chapters:
- 1/7
- Kudos:
- 1
- Hits:
- 7
-
THE HEADCANON COLLECTION by D3m0nicArtz
Fandoms: PHIGHTING! (Roblox), Regretevator (Roblox), Cookie Run (Video Game), Pressure (Roblox), Mouthwashing (Video Game), OMORI (Video Game), Deltarune (Video Game), The Amazing Digital Circus (Web Series), Date Everything! (Sassy Chap Games Video Game), SMG4 (Web Series), Inanimate Insanity (Web Series)
02 Dec 2025
Tags
Summary
GIMME A CHARACTER AND I’LL GIVE YOU MY HEADCANONS!
-
Tags
Summary
· · ─ ·✶· ─ · ·
As the Father’s presence slowly becomes nebulous, a new angel is born from seemingly nowhere, thrown beneath the wing of Archangel Gabriel for guidance.
He likes them just fine and is happy to train, despite them seeming a slight uncanny.
If only he can figure out why they have horns…?or;
Gabriel doesn’t trust the new archangel. False angels are only a myth, right?
-
Tags
Summary
free de la hoya is unhappy, and wants to quit the raging bulls. theodore glass does not like that, and decides to do something about it.
or,
free de la hoya wants to rejoin bc sol, and books a flight back to spain. when silas karlisle is supposed to pick up free from the airport and he never shows up with his flight, silas needs to figure out what happened to his boyfriend.
-
The Accidental Magical Girl: Grandma Glitz's Glittering Legacy by creativechocolate
Fandoms: Original Work
02 Dec 2025
Tags
Summary
The universe had a plan: give a powerful transformation locket to a bright-eyed teenager. But fate—or perhaps sheer grandma willpower—had other ideas. Now, instead of her granddaughter, Grandma Glitz is the newest Magical Guardian, fighting evil in a surprisingly robust, glitter-covered apron. A collection of headcanons exploring the new, highly effective, and deeply confusing life of the world's most wholesome superhero.
Series
- Part 59 of Headcanons From Tumblr
- Part 19 of Pieces Inspired By Art
-
Tags
Summary
Dear readers, Advent is beginning, and with it the joyful anticipation of Christmas. To make the wait more enjoyable, I have decided to publish one short oneshot every day containing snippets from the life of Severus Snape. I conceived it as a very loose continuation or supplement to Snapetober2025, but you don't need to read Snapetober to understand the content of the chapters (although I highly recommend it, as I am quite proud of it).
-
Tags
Summary
War, an unfortunate but expected situation a warrior has to deal with. Young Meta has been thrust into a world that he might not have been truly ready for. With the help of his mentor and friends, Meta has to face some of the toughest and deadliest threats he's ever had to go against. Will the weight of war crush him, or will he overcome the trials that await him?
Series
- Part 4 of GranEssex Chronicles
-
Ru's JJK Headcanons! by sugurusplaything
Fandoms: 呪術廻戦 | Jujutsu Kaisen (Manga), 呪術廻戦 | Jujutsu Kaisen (Anime)
02 Dec 2025
Tags
Summary
jjk men headcanons, adding more chapters when i can <3
-
Tags
Summary
I’m going to die.
The breath was knocked out of her as she collided with one of the trees. She gasped for air as she slid down the trunk. Chunks of metal had embedded themselves in her arm. Her blades had shattered when they hit the tree, and the shrapnel had cut into her skin. Attempting to activate her ODM gear, tears started to fall down her face. No gas. This was it. This was how she was going to die. Alone.
Black spots danced in her vision. She probably had a concussion. A laugh escaped her lips.
One of the fifteen meters picked her up in its massive hand, squeezing what little breath that was inside her lungs out. Claire closed her eyes. At least she had tried in the end. She could accept this death. It was quite peaceful, actually, except, was that screaming she heard?
-
Claire Helios has been a member of the Scouts for years. She has lost many friends and loved ones to the titans, leading her to closing herself off from everyone. But one fateful day, she was forced to work with a new recruit, Levi Ackerman. He's rude and a smart-ass. She doesn't like him at all at first, but that changes after a single cup of tea. -
Threading the Realm (DISCONTINUE) by Elifsoftware
Fandoms: Forsaken (Roblox), Roblox (Video Game)
02 Dec 2025
Tags
Summary
"No-clipping" refers to when a player moves through solid objects, like walls or floors, usually by using a cheat or glitch, allowing them to bypass normal boundaries and reach areas that are otherwise inaccessible.
(or for a more simple context incase some people don't get it, Elliot escapes Forsaken then got brutally tortured maybe physically but totally 100% mentally by author himself)
-
Headcanons for Encanto Characters by WitchWithTheKittyPeetsAndSneks
Fandoms: Encanto (2021)
02 Dec 2025
Tags
Summary
It's easier to write headcanons and ramble rather then write full ass fanfiction. I've been busy, depressed, married now, and in a writers block. I recently rewatched Encanto because I have a babysitting job and remembered I love the rat man. Oh and the music. Oh and the outfits. Oh and the message. I love the movie. I'm writing random bullshit cause I can and hopefully it gets me to continue my other fanfic works.
Love my audience!! 💜 💜 Y'all are great, I know I need to feed y'all more.
-
Light of the Amulet and the Dragon's Eye by Ga_dget
Fandoms: Tales of Arcadia (Cartoons), How to Train Your Dragon (Animated Movies)
02 Dec 2025
Tags
Summary
Our friends woke up from the Terrible Terror with a letter.
A thief has settled in Berk. Valuables have remained untouched, but the mass disappearance of cutlery and household utensils makes us worry that the thief will steal more and more.The task of the Dragon Riders is to catch the thief and find out where the missing items went. Easy peasy, be it a human or a dragon.
But will he want to come out into the light and prove that the old blacksmith's superstitions are true?
-
Be grateful you ain't the one to die! by DonnyCalyx
Fandoms: Toon Turf (Web Series), Riggy The Rabbit Monkey (Web Series)
02 Dec 2025
Tags
Summary
Toon Turf but Billy does not die! This takes place just as the factory explodes and Billy was JUST able to make it out alive (That does not mean without injury though!) This is just a fun what if except I shove my own headcanons onto it! (This means not alot of things in this are 100% canon considering we only have the pilot + my lil headcanons) Watch Toon Turf before reading this or alot of things won't make sense!