The collaboration between Disney and Square resulted in a mixture of familiar Disney and Square characters, as well as several new characters created and designed by Tetsuya Nomura. The primary protagonist of the game is Sora (voiced by Haley Joel Osment), a 14-year-old boy chosen to wield the Keyblade—a weapon which is a cross between a key and a sword—for battling darkness. The game also features two friends from his home world, Riku (David Gallagher) and Kairi (Hayden Panettiere). For most of the game, Sora is joined by Donald Duck (Tony Anselmo) and Goofy (Bill Farmer). Donald, the court wizard, and Goofy, captain of the royal guard, are sent from Disney Castle to find the Keyblade. The three join forces to search for King Mickey Mouse (Wayne Allwine), Kairi, and Riku. The primary antagonist is Ansem (Billy Zane), who seeks power and knowledge by using dark beings called the Heartless. The Heartless, hearts corrupted by darkness, serve as most of the enemies encountered in the game and come in a variety of shapes and sizes. Maleficent (Susanne Blakeslee), from the 1959 film "Sleeping Beauty", leads a group of Disney villains that seeks to use the Heartless for their own gain.