How to Write a Good Fanfiction Crossover

Last Updated: April 14, 2022

A lot of people say that they don't like crossovers because they are unbelievable. However, this is just because they are so difficult to write convincingly. Here's how:

Steps

1
Choose two fandoms to write for. Make sure that they can work together, for example, Doctor Who and Harry Potter work because the Doctor can go anywhere in his TARDIS and can turn up there, but Finding Nemo and Death Note wouldn't work so well because Death Note is about people and Finding Nemo is about fish. Also make sure the time lines match.
2
Make sure that there is a believable reason for your two fandoms to end up together. 'Harry went on holiday to Japan' is nowhere near as believable as 'a shinigami dropped their Death Note into the Hogwarts grounds'.

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3
Choose which characters out of the fandoms you are going to use. Don't pick too many because if you have a lot of characters your story won't work as well.
4
Plan your story with a believable plot line which doesn't make any character act out of character.
5
Write your first paragraph as an introduction explaining how your fandoms came together. Try to include both fandoms in the first chapter.
6
Write regularly so that you don't forget what you have already written and cause plot holes in your story.
7
When you have finished, check through and make sure all of your characters are acting in character and that no canon is broken, unless you state in your summary that you will break canon.
8
Think of a good title for your story and post it on a fanfiction website.

Community Q&A

Question

Is it possible to combine three different fandoms?

Community Answer

Yes! Just make sure you aren't getting in over your head -- three fandoms is a lot to combine into one story.
Question

Can I write a good Kane Chronicles and Harry Potter crossover?

Garrett

Top Answerer

We'll never know until you try! In all seriousness, yes. You have the potential to write just about anything. You only need to have faith in your work.
Question

Would a Harry Potter-Avengers crossover work?

Community Answer

Yes, both 'fandoms' contain magic, villains and dynamic characters. I think it is a really good idea that you should pursue -- the only thing you should worry about is making sure that it is well written.

Warnings

If you post your work online anyone can read it.

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Choose the two fandoms wisely. If the fandoms that you are writing for are commonly known to be at odds with one another or dislike each other, you might want to avoid writing a fanfiction in which those two fandoms crossover, as you and your fanfiction might attract negative attention from fans of both.

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