Kingdom Hearts is a crossover of various Disney settings based in a universe made specifically for the series. In addition, it has an all-star voice cast which includes many of the Disney characters' official voice actors. Characters from Square Enix's Final Fantasy series make appearances and interact with the player and Disney characters. The series centers around the main character, Sora, in his search for his friends and his encounters with Disney and Final Fantasy characters on their worlds.
Below are the characters on the site that cosplayers have depicted.