Claim: The protagonist of Kingdom Hearts is called Sora.

is a series of crossover action role-playing games owned by Disney Interactive Studios and developed and published by Square Enix -LRB- originally by Square -RRB- . It is a collaboration between Disney Interactive and Square Enix , and is under the direction of Tetsuya Nomura , a longtime Square Enix character designer .   Kingdom Hearts is a crossover of various Disney settings based in a universe made specifically for the series . The series primarily centers on the main character Sora and his journey and experiences with various Disney , Final Fantasy and The World Ends with You characters , whilst stopping the various incarnations of the primary antagonist Xehanort throughout the series . All characters original to the Kingdom Hearts franchise are owned by The Walt Disney Company .   The series consists of eight games across multiple video game consoles , and future titles are planned . Most of the games in the series have been both critically acclaimed and commercially successful . As of October 2013 , the Kingdom Hearts series has sold over 25 million copies worldwide . A wide variety of related merchandise has been released along with the games , including soundtracks , figurines , companion books , novels and manga series .