Who are the most popular crossover characters in Kingdom Hearts x Final Fantasy x Fanfiction?

One interesting concept could be the combination of different magic systems. In Kingdom Hearts, there's the Keyblade magic, and in Final Fantasy, there are various elemental and spellcasting systems. In fanfiction, they might blend these in unique ways, like a character using a Keyblade to cast a Final Fantasy - style spell.

Aqua is popular as well. Her loyalty and her own journey in 'Kingdom Hearts Birth by Sleep' make her an interesting character for crossovers. She could be paired with characters from different franchises in fanfiction. For example, if she were to cross over with a character from a magical girl anime, her strong will and magical abilities could lead to some really engaging storylines.

Sora is often very popular in Kingdom Hearts fanfiction. He's the main protagonist in the game, so many fans like to write about his further adventures or different versions of him. Another popular character is Riku. His complex relationship with Sora and his own journey with light and dark make him a fascinating subject for fanfiction writers.

Friendship and loyalty are also prevalent themes. In Final Fantasy XV, Noctis and his friends are deeply loyal to one another, and in Kingdom Hearts, Sora's relationships with Donald, Goofy, and his other friends are central. Fanfictions often explore how characters from both series would bond over these shared values.

Sora is a great choice. He's the main protagonist in the Kingdom Hearts series, so he would be very recognizable. His positive attitude and courage could make for an interesting dynamic with the reader.

Roxas is often a popular character in Kingdom Hearts Darkness fanfiction. His connection to Sora and his own experiences with the Organization XIII, which is related to the darkness, make him a fascinating subject. Another popular one is Axel. His complex personality and his role in the events involving the darkness in the Organization XIII storylines draw a lot of attention.

Riku often features prominently in Kingdom Hearts Dark Fanfiction. His initial struggle with the darkness in the main games makes him a prime candidate for darker interpretations. Also, Xehanort is quite popular as he is already a major villain, and fanfiction can explore his motives and backstory even further in a darker context.

I think Lincoln would be the most interesting. He's used to handling a big family and all kinds of chaos at home. In the Kingdom Hearts universe, he could use his adaptability and problem - solving skills. He'd be curious about the new worlds and the magic there, and his journey of discovery would be really engaging to read about as he teams up with Kingdom Hearts characters.

There are also characters like Riku. He is Sora's friend and rival in some ways. In the novel, he has his own character arc, dealing with his inner demons and his relationship with Sora. Another important character could be Kairi, who is part of Sora and Riku's group. Her presence often gives the other characters something to protect and fight for.

Itachi from Naruto is also a popular choice in these crossovers. His complex character and powerful abilities can be really interesting when combined with the world of Final Fantasy 8. He could be seen as a mysterious figure in the FF8 world, perhaps even having some connection to the sorceresses. And of course, characters like Naruto and Zell from FF8 can have some fun interactions too, with their different fighting styles and personalities.