In KINGDOM HEARTS II, players will travel through the worlds of Beauty and the Beast, The Lion King, Mulan, Pirates of the Caribbean, Steamboat Willie and Tron as well as revisit worlds from the original, including Aladdin, Disney Castle, Hercules, The Little Mermaid, Winnie the Pooh and Tim Burton's The Nightmare Before Christmas. The game features more than 100 Disney characters, including the new additions of Chicken Little, Stitch from Lilo and Stitch and one of Disney's favourite villains, Pete.

KINGDOM HEARTS II also introduces new, original characters such as Roxas, members of Organization XIII and the Nobodies, all designed by Square Enix's Tetsuya Nomura, director and character designer of the KINGDOM HEARTS series.