Crossover Fanfiction Discussion, Rec., Idea Thread

This thread is dedicated to crossover fanfiction.

Let's start with me recommending this fic:

Title: Super Dimensional Injustice Exchange Group

Source Title: 超次元冤种交流群

Tags: Crossover, Multi-crossover, Chat Group

Summary:
[This book tells the story of a bunch of wronged people who come together to try to change their fate.]
It includes but is not limited to "A loving father and a filial son", "Do you want to dance too?", "The evening bell has revealed your name", "Fuck you" and other plots.
"Excuse me, everyone here is a wronged person."

Worlds:
Danganronpa
Devil May Cry
Resident Evil
Jojo's Bizare Adventure
Fate Stay Night
Kamen Rider
Ultraman
Naruto
Fate Grand Order
Prototype
Arknights
Ao Oni
Bloodborne

Chat Group Members:
Hinata Hajime(Danganronpa)
Nero(Devil May Cry)
Leon S. Kennedy(Resident Evil)
Jolyne Cujoh(Jojo's Bizare Adventure)
Shirou Emiya(Fate Stay Night)
Jotaro Kujo(Jojo's Bizare Adventure)
Sento Kiryu(Kamen Rider Build)
Vergil(Devil May Cry)
Kengo Manaka (Ultraman)
Obito Uchiha (Naruto)
Ritsuka Fujimaru (Fate Grand Order)
Alex Mercer (Prototype)
Doctor (Arknights)
Hiroshi(Ao Oni)
The Hunter(Bloodborne)
 
Awesome! This thread seems perfect for me, I read and make a lot of crossover fanfics, so I think I'll be checking in periodically.

So, I had an idea for a fanfiction that's been floating in my head since I was 18. (I'm almost 22 now) and I explain it here.

If you want the TL;DR version, then…

Well, it's a fusion fic between my work Ultimate, RWBY, Worm, and My Hero Academia, and it's a continuation of my fanfics, 'Lightning Bug' and 'JADD'. It's has other franchises in it that they'll crossover with. Like One Punch Man and BlazBlue. It takes place on a planet 10 times bigger than ours so that's how it's possible.

The story is RWBY, JNPR, go to Japan to learn from U.A. Coil's groups goes to make a deal with All For One, and Ultimate goes to find The Undersiders. (And Dr. E. Vile goes to but he's still a moron.) Class 1-A, RWBY, and JNPR meet. Ultimate meets The Undersiders and The Travelers. And eventually all the main characters and secondary characters meet up for one last final battle. (trying to not give too much away)

Lightning Bug and JADD are other fics I've worked on, but I'm going to rewrite Lightning Bug before I go any further with the other crossovers.
 
GATE: Thus the Players Crafted There
In real life, I sat comfortably at my desk, headphones snug over my ears, fingers lightly tapping on the keyboard. It was just another evening on the server with friends, roleplaying like we always did. We'd been doing this for months now—acting as if we were the default skins from Minecraft. It was fun. I was Steve, the iconic blue-shirted blockhead. My sister, playing on the same server, was off in the Badlands, doing her usual thing—hunting griefers. But here, in the heart of Endertown, things were peaceful.

I adjusted my mouse, guiding Steve across my small farm. Carrots and wheat swayed gently in the blocky wind as I harvested the crops. A couple of other players walked by, their names hovering above them like little beacons. One of them stopped and waved. I pressed the key to wave back. Simple things like that made the server feel alive. It wasn't just about gathering resources or building. We'd built a little community here.

With my inventory full, I headed toward the center of town, where villagers and players were mingling, trading. The market square was bustling—perfectly normal for a Friday night. An Iron Golem lumbered past, stooping down to hand a flower to a baby villager. I smiled at the screen. The small, scripted moments like that always gave the place a comforting vibe.

Then I heard her voice through proximity chat.

"Hey, Steve!" It was Alex, or rather, my friend who played as her. She was approaching with Noor, Ari, Zuri, and the others, all of us sticking to the classic skins. They started up the usual banter as soon as they got close.

"Hey!" Steve called back, turning his character to face them.

"So, when are we heading to the End?" Alex asked as her character stood next to him. "We've been putting it off for too long. That dragon needs to go down."

Noor nodded her head. "I say we do it this weekend. Raid the End, get our Elytras, and be done with it."

"Yeah, we need that XP farm, like, yesterday," Makena added with a laugh.

Zuri groaned. "XP farm? I just want my Elytra so I can fly again. I'm tired of walking everywhere."

They all laughed, their characters jostling each other in a casual, pixelated way. The server's roleplay rules might be strict, but that didn't stop them from having fun. The conversation soon turned to logistics—who had Ender Pearls, who had the Eyes of Ender, what potions were needed, and when they could all meet up.

Steve was about to chime in when Ari glanced at him. "What about you, Steve? You good for Saturday?"

He hesitated for a second. "I, uh, can't make it Saturday. I've got my cousin's wedding."

"Wait, you're going to that too?" Ari asked. "Dude, I'll be there."

"That's great, but now we need to pick another day," Noor sighed. "How about Sunday? Can everyone do Sunday?"

Before Steve could respond, Ari's voice cut through, slightly more curious now. "Hey… What's that?"

Her character turned, staring off toward the northern edge of town. A faint shimmer caught their attention. Steve moved his character to stand beside her and noticed it too—just beyond the village's stone walls.

"What the heck?" Noor muttered. "Is that… a mod?"

"No way," Zuri shot back. "We're not using any texture mods. You know that's against the rules."

They all stared as the shimmer slowly grew, taking form, until it was no longer just a strange light but something physical—something massive. It was a gate. A towering structure of stone, covered in strange symbols. Steve's heart skipped a beat as he watched it materialize, impossibly real for something in this world of blocks.

The villagers had stopped moving, frozen in place as if time itself had paused for them. The mobs that usually lurked just outside the village's safe zones—the pigs, cows, and creepers—also stood still, as though sensing something they couldn't comprehend.

"What the hell is that?" Zuri said, her voice now tinged with genuine confusion.

Then, it happened. The gate began to open.

From its dark depths emerged a legion—rows of soldiers in gleaming armor, banners waving above them in the breeze. What struck Steve more than anything was how real they looked. They weren't blocky, like everything else in Minecraft. These soldiers looked detailed—almost like something out of a high-budget RPG.

"Are those... NPCs?" Kai asked, his voice cracking slightly.

The villagers began to panic, running to the nearest huts, other players still in character as teachers and farmers frantically tried to shepherd them to safety. One player, a hardcore roleplayer for the first time broke character and took out a sword even though his character was a pacifist.

"This is bad," Alex said quietly, pulling out her sword.

Steve's hand hovered over his mouse. Something wasn't right. This didn't feel like an event or update. It felt… real. Too real.

As if on cue, a loud horn bellowed from the approaching legion, the sound ripping through the village. The players around Steve tensed, weapons drawn, their proximity chat exploding with chatter. His headset buzzed with overlapping voices.

"No way, this is insane."

"Are we getting hacked?"

"They don't look like anything from the game—"

Suddenly, Efe's voice cut through all the chaos, his usual calm demeanor broken by a sharp, censored curse. "What the f***?!"

Makena was already handing out swords to anyone unarmed. "Get ready!"

The first wave of the soldiers charged, and everything descended into chaos.
 
This is simply a collection of ideas for crossover fanfic that I wish were made. Y'all can use them however you see fit.


1. the dragon Prince/trollhunters crossover

"the trollhunters get teleported to the Dragon Prince world after an accident with Blinky experimenting with spatial Magic"
You are free to change how they got there, though I would prefer that blinky and aaaaargh be there you are free to exclude them if you want

2. Black Clover/RWBY crossover

"team RWBY, JNPR and Qrow get teleported to the world of Black Clover"

how they get there as your decision, whether or not Qrow and/or team JNPR is there is also your decision would also like the possibility of Black Clover characters getting their auras unlocked

3. Black Clover/World of Warcraft crossover

"Finral Roulacase has got his hands on powerful experimental space/time magic item and while he's testing it he accidentally ends up getting himself, the entire Black bull Bass along with everybody in it teleported onto Azeroth"

what expansion and where they end up is your decision. how, when and where he gets the item, and what causes it to go haywire in the first place is also your decision

4. Steven Universe/Infinity train crossover

everyone is who watched Steven universe future knows that Steven would definitely qualify for getting sent to the infinity train whether or not it can help him is the question

5. Multiverse self insert mega crossover

"you're the newest recruit to an interdimensional organization. Our mission, survival or Revival of endangered or extinct intelligent species, how we do this you say? By planting colonies on as many different worlds in as many different dimensions as you possibly can! Your first mission plant colonies of these 3 species: saiyan, namekian and kryptonians in the animorph universe good luck you're going to need it"

basically the story is an Adventure/civilization building story with all the conflict in drama that comes with it finding the right world's to build on, how they will deal with how to the natives of said planet/universe Etc you get the idea, entirely up to you if you go with my beginning setting or not just make sure to keep the main theme in mind

6. Multiverse mega crossover/fate kaleid liner Prisma illya OC self insert
"You have figured out how the Ainsworth family make the servant cards and you started making your own but then you thought of something why just the heroes of one world? If the Multiverse theory is to be believed should there be universes of every anime, manga, comic and cartoon out there? you begin making interdimensional portals to other worlds add a device to scan that's World's heros so that you can implant them into the Holy Grail system so that you can make servant cards of them question is how are you going to get close?"

basically this is an adventure across the Multiverse, the kind you can have all kinds of fun with also like a possibility should you ever visit the Black Clover universe try giving asta a copy of excalibur to see if his book will absorb it


7. Kaijudo: Rise of the Duel Masters/Godzilla

can't think of a proper synopsis for this all I can say is it would be epic see how they would react to having Godzilla show up and wreck the place, plus the the evolution serum and how it may or may not affect him

8. Ben 10/Kaijudo: Rise of the Duel Masters

"kid Gwen and Ben finally get back from space after their harrowing adventure to stop the Omnitrix from self-destructing and are middle of giving their grandpa Max a big hug when a portal appears out of nowhere and swallows them and the rust bucket hole when they come to they find themselves in the city they've never heard of San Campion they get into the rust-bucket and drive around to to investigate their situation until they encounter a giant monster attacking, Ben goes hero to stop the monster but quickly encounter a group calling themselves the Kaijudo Masters which mistake him for a kaiju one misunderstanding in a brawl later they come to explain their circumstances to the Kaijudo Masters can Ben & the Gang get back home while helping their Newfound allies fight off the choten"
obviously there's a whole lot of fun that can be had with this setup Ben's alien forms constantly being mistaken for creatures of the Kaiju Realm by dual Masters and kaiju alike, the way these characters personalities would Roll off each other and the fights it be a ton of fun Plus at the end of the series Ben's to'kustar form Way big would be able to get the monarchs out of the null zone

9. Fairy Tail/Kaijudo: Rise of the Duel Masters

"a mysterious note with unknown words written on it and guess who goes and reads it Natsu getting himself Lucy, Gray, Happy and Erza teleported to San Campion where the raw magical power draws the Kaijudo Masters do them Antics ensue can fairy tales Ultimate Team get back home while helping their Newfound allies in their battle against choten"

much like the Ben 10 story this would also be very fun for many of the same reasons Natsu's fire eating, Lucy's celestial spirit Magic, Gray's Ice make magic and Erza's requip Magic would leave all the Kaijudo Masters completely shocked

10. RWBY/SAO Alicization

the thing I haven't seen done with this combination is finding a way to transport team RWBY to those game worlds without those games being in the world of Remnant, the whole the game exists in the Remnant and they end up playing and getting trapped never really appealed to me and then actually getting transported to to those worlds seems a lot more appealing and fascinating to me for instance it leads the potential up probabilities of unlocking aura in the world were it never normally existed

11. self insert/Spirit animal/monster hunter

"you accidentally get killed by God/Goddess(your choice which one) feeling apologetic he gives you the option to reincarnate into any world you want with any variety of powers you want within reason and you get to thinking what world would I want to go to the end up thinking the spirit animal world be a decent place to live in, no cosmic madman showing every now and then to the blow up the world, the only real threats are any of all of the great beasts and there followers which if I were to use my monsties from Monster Hunter stories it would make surviving there pretty easy so you asked him/her to reincarnate you into the the world of spirit animals with access to your all your monsties, your kinship Stone along with the option of getting my own spirit animal and off you go reincarnated a new without even the slightest idea and just how much the spirit animal world is about to change because of you"

now this stories got all kinds of potential you can do with it, from the potentially epic fights between your monsties and the great beasts, how having your monsters there may or may not cause monsters from the Monster Hunter Universe getting during the spirit animal summon ceremony overall a very interesting and potentially awesome story if in the right hands

12. animorphs/spirit animal

we can all probably imagine the potential this particular idea has for obvious reasons, need I say more?

13. Dinosaur king/spirit animal

can't really think of a summary and just like the last one this one do it have a ton of fun story potential by not as much as the last one but it would be a significant amount

14. Milo Murphy's Law/anything
We can all imagine the kinds of fun we could have with this, having either Milo himself show up or somebody ending up with Milo Murphy's curse with the complete and utter chaos that would ensue would be comedic gold. Imagine your favorite show and then Milo shows up...😂😂😂😂😂😂 that would satisfy a chaotic part of my soul.

15. The Dragon Prince/World of Warcraft

do I've seen a lot of different versions of this crossover though I've not seen one that I personally was looking for and that is the accidental teleportation to either world which would lead to the Discovery, contacting, and th creation of portals between both worlds. Depending on the expansion could create any number of potential variables for instance which forces and/or races would potentially join either faction or would the beings of the Dragon Prince World formed their own third faction would make for a quite the interesting read.

16. self-insert Monster Hunter/Spider Rider

"you're minding your own business walking around the Wildspire waste gathering materials untill you find a portal and you think (portals again, hasn't it been the third time this year, I wonder what's going to come out of this one this time?), then you feel it, a tugging sensation drawing you towards the portal (shit, unless of course it's me going into it!). You try desperately to get away but the pulling sensation is too strong and you're pulled through the portal. As you're traveling through the portal completely unaware of where you're going you see a giant beautiful woman you do not know why but you feel compelled to grab her hand which she is stretching out towards you and so you do which causes upon contact a blinding light. You wake up to find yourself in an unusual forest unlike you any you've ever seen which is saying something because you been places, you find a strange boy right beside you calling himself Hunter Steel and he's just as clueless as you on where you 2 are. A few Misadventures later and you come to find out that you were in a place called the inner world where brave warriors ride huge spiders to battle an insectoid race called the Invectids and you decide to help them in their cause while you trying to figure out a way back home for some unusual reason though monsters from back home keep showing up here and wreaking havoc. Can you solve the mystery behind why monsters from back are showing up in the inner world and get back home while also fighting the invectid and their leader Lord mantid there's only one way to find out"

this is awesome storytelling potential and the setting would also work really well with monster hunter stories imagine the Spider Riders reaction to you riding monsters lol.

17. Fire Force/Fairy Tail

Natsu in the gang get transported the fire force world, enough said

18. Terra Nova/Jurassic world

Anyone who watch terra nova can imagine how epic this crossover would be.

19. fate kaleid liner Prisma illya/ Fate/Zero

imagine if the characters of "fate kaleid liner Prisma illya" watched Fate/Zero

20. Heavy Object/godzilla

how is there not a fanfic of this, it would be fucking awesome

21. Monster Hunter/RWBY crossover

A god of chaos who hates both the brothers and there little mistake Salum, had decided to help the inhabitants of Remnant out by releasing all the monsters of the universe of Monster Hunter (excepted for the magala line because don't give Salum ideas) to fight the grim and provide food for them, along with altering some of the faunus that were still developing faunus trait to match that of the monsters. Even going out of his/her way to provide a monster encyclopedia in both book form and a downloadable version to notify them of what there in for, needless to say chaos ensues. Now Remnant is in for quite the change, how will the people of Remnant react and adapt to the new changes to there world?

22. Warhammer40k/multiverse crossover
Reporting to all multiversal travelers and gods, the Warhammer 40k section of the multiverse has been declared a dumping ground for gods that have dangerous species they don't want in there universe anymore but don't want to kill off. The species that have already been released are as followed: Saiyans, Daleks, Cybermen, Zerg, Xenomorphs, Yautja, Yuuzhan Vong, and the Borg with the only species not aloud to be released being the Flood, the Brother Moons and Mr. frundles which are banned species by multiversal law and are forbidden to be released outside of the universes they already infected. Ghost riders have also been released to try and rain in this chaotic section of the multiverse.

23. Pacific rim: The black/Monster Hunter crossover

the Precursors' kaiju have taken Australia driving most humans off the continent all while a god of chaos watches. Deciding it wanted to have a little fun so it choose to make it a little harder for the Precursors to keep the continent while also making it a little harder for the humans to retake the continent by releasing all the species of flora and fauna from the monster hunter realm that could live in the environment of Australia, elder dragons includes 😁.

24. Horizon: Zero Dawn/Monster Hunter crossover

A monster hunter is in the Ancient Forest on a Quest to hunt a Pukei-Pukei when a portal opens up and sucks him/her though knocking them unconscious on the way though, when they wake up there is a young women named Aloy, you later come to find out that you are on a different world. A world of humans, animals and machines. As your trying to get your bearings and find a way home, mysteriously monsters from home in large numbers start to appearing all over the place, You travel trying to figure out where the monsters are come from to stop it and hopeful use it as a way to get back home.

Serina: A Natural History of the World of Birds (Speculative Evolution) I have same regular fanfic and fanfic crossovers ideas on this so here's the basic setting

A passing (god/goddess or super advance race) finds Serina during the ocean age of the Ultimocene they become curious and decide to analyze the moon studying it life and using powers/tech to look into its past to study its history, discovering the fact that the life of this moon was brought here and left to its own devices some 250+ million yrs. ago. that there were 2 living and 2 extinct sentient species that evolved from that introduced life, along with the fact that for some unknown reason the moon was dying, which would bring the other remaining sentient species (one of which had 3 subspecies!) to extinction. Unable to bare the thought of the loss of sentient life, the being/beings thinking "entirely different ways of thinking, different ways of feeling gone!" decided to revive the 2 extinct sentient species then take all 4 sentient species and some of the native wildlife that the 3 most recent sapient peoples evolved with (the wildlife of the Harp steppe along with the current wildlife of the ocean age, that includes the Strormsonor) to a more suitable star system to live in with first place they think to look being finding where there introduced ancestors came from.

You decide the where they end up. Is it earth? what time in earth's history they end up? is it a different universe? which one? Mass effect, Halo, Horizon: Zero dawn, Avatar: the last Airbender etc., When in those universes do you end up? there is so much potential with what you can do with this Idea.

25. Serina: A Natural History of the World of Birds (Speculative Evolution)/Earth modern times

Aaah yes humanity of the 2020s having to now share earth with 4 other sentient species along with the native wildlife of a ice age world being introduced to to the arctic circle, how fun, and would make for such an interesting read. The only race that wouldn't be in the arctic circle would be the Forked-tail Babbling Jays as the are a desert species so here is list of where they would live:

a. the deserts of the south to southwestern U.S.A. primarily in areas where it rarely snows with plenty trees to nest in and wildlife to hunt
b. Much of Africa would be the perfect home for them
c. The same could be said of Australia

26. Serina: A Natural History of the World of Birds (Speculative Evolution)/Avatar: the last Airbender crossover

Team Avatar having just escaped Zuko and setting off on their journey to help Aang master the elements and save the world... until them and everyone else day(including everyone who was a sleep) was rudely interrupted by an unknown entity calling itself (insert name) had decide that this would the perfect place to put the people and animals of a dying world to prevent there there extinction.

27. Serina: A Natural History of the World of Birds (Speculative Evolution)/Horizon: Zero dawn crossover

Links to Serina's main site, deviantart and patreon for those who don't know what that is.
 
Back
Top