One great 'Kingdom Hearts Crossover Fanfiction' is 'Kingdom Hearts and Final Fantasy: The Convergence'. It combines the elements of Kingdom Hearts and Final Fantasy in a really interesting way. The characters from both universes interact in a believable manner, and the plot keeps you hooked from start to finish.
Judy Hopps from 'Zootopia' is a great character for crossovers. She's smart, determined and a great detective. She could easily fit into many other animal kingdom stories. Another good one is Simba from 'The Lion King'. His journey from a cub to a king gives a lot of room for crossovers. He could meet other characters and share his wisdom or learn from them.
First, you need to have a solid understanding of both universes involved. For example, if you're doing a Kingdom Hearts and Pokemon crossover, know the Pokemon types, their abilities, and how they interact. Also, be familiar with Kingdom Hearts' keyblade mechanics and the different worlds. Then, create a unique plot that ties the two together. Maybe the Pokemon are new forms of Heartless or something.
One interesting concept could be the merging of different kingdoms' cultures. For example, a high - fantasy kingdom with knights and magic crosses over with a more oriental - inspired kingdom. This can lead to unique interactions between characters, like a western knight learning the ways of the eastern martial arts. Another concept is the power dynamics. When two kingdoms cross over, the different power structures, be it magical or political, can create a lot of drama and conflict. And also the idea of different species from each kingdom interacting, such as elves from one kingdom and dwarves from another.
Often, the main protagonists from the original kingdoms tend to be popular. For example, if there are heroic characters known for their bravery in their respective kingdoms, they will likely be central in the crossover fanfiction as well.
Another theme is friendship. Sora is all about making friends, and in crossovers, he forms new bonds with characters from different franchises. For example, he might become friends with Sonic the Hedgehog and they team up to fight a common enemy. It shows how his positive attitude can bridge different universes.
One common theme is the clash of cultures. Since The Last Kingdom focuses on Saxons and Vikings focuses on, well, Vikings, when they cross over, there's always a lot of exploration of how these different cultures interact. Another theme is the idea of loyalty. Characters from both shows have strong loyalties to their own groups, and in the crossovers, this loyalty is often tested.
There are quite a few. One interesting one might be on FanFiction.net. You can search using the tags 'Sonic' and 'Kingdom Hearts' to find crossovers that combine the high - speed, energetic world of Sonic with the complex and magical Kingdom Hearts universe. It's always fun to see how authors blend Sonic's speed and his friends' abilities with the Keyblade - wielding heroes of Kingdom Hearts.
One great Kingdom Hearts Terra crossover fanfiction is 'Terra's New Journey'. It takes Terra to a different world where he has to face new challenges and make unexpected alliances. The story really dives deep into Terra's character, exploring his strengths and weaknesses in this new setting.
Well, one unique aspect is the exploration of Terra's untapped potential. In crossover fanfictions, Terra can be put in situations that the original game didn't cover. For example, he could face off against characters from other franchises, which shows how his abilities stack up against different foes.