Kingdom Hearts features a mixture of familiar Disney and Square Enix characters, as well as several new characters designed and created by Nomura. In addition to original locations, the Kingdom Hearts series features many worlds from Disney films. Sora must visit these worlds and interact with various Disney characters to protect them from enemies. Often, his actions in these worlds closely follow the storylines of their respective Disney films. The main characters try not to interfere with the affairs of other worlds, as it could negatively affect the universe's order. Moogles, small creatures from the Final Fantasy series, are another common element in the games. They provide the player with a synthesis shop in order to create and purchase items used in the game. So far, twenty-one characters from the Final Fantasy Series have appeared in the Kingdom Hearts games. The main cast from The World Ends with You also makes an appearance in the series as seen in Dream Drop Distance.